Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2024

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM TO

Commission file number: 001-38327

Cue Biopharma, Inc.

(Exact name of registrant as specified in its charter)


Delaware		47-3324577
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

40 Guest Street Boston, Massachusetts		02135
(Address of principal executive offices)		(Zip Code)

(617) 949-2680

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	CUE	Nasdaq Capital Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  No 

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes  No 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.


Large accelerated filer		Accelerated filer	

Non-accelerated filer	☒	Smaller reporting company	☒

Emerging growth company	

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). ☐ Yes  No

As of November 12, 2024, the registrant had 63,350,327 shares of Common Stock ($0.001 par value per share) outstanding.

CUE BIOPHARMA, INC.

TABLE OF CONTENTS


PART I. FINANCIAL INFORMATION
	Item 1. Financial Statements (Unaudited)	6
	Condensed Consolidated Balance Sheets	6
	Condensed Consolidated Statements of Operations and Comprehensive Loss	7
	Condensed Consolidated Statements of Stockholders’ Equity	8
	Condensed Consolidated Statements of Cash Flows	9
	Notes to the Condensed Consolidated Financial Statements (Unaudited)	10
	Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	27
	Item 3. Quantitative and Qualitative Disclosures about Market Risk	46
	Item 4. Controls and Procedures	46
PART II. OTHER INFORMATION
	Item 1. Legal Proceedings	47
	Item 1A. Risk Factors	47
	Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	48
	Item 3. Defaults Upon Senior Securities	48
	Item 4. Mine Safety Disclosures	48
	Item 5. Other Information	48
	Item 6. Exhibits	49

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS AND INDUSTRY DATA

This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements, which are based on certain assumptions and describe our future plans, strategies and expectations, can generally be identified by the use of forward-looking terms such as “believe,” “expect,” “may,” “will,” “should,” “would,” “could,” “seek,” “intend,” “plan,” “goal,” “project,” “estimate,” “anticipate,” “strategy,” “future,” “likely” or other comparable terms. All statements, other than statements of historical fact, contained in this Quarterly Report on Form 10-Q, including statements regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans and objectives of management, are forward-looking statements.

The forward-looking statements in this Quarterly Report on Form 10-Q include, among other things, statements about:

•

the initiation, timing, progress and results of our ongoing and planned preclinical studies and clinical trials and our research and development programs;

•

our estimates regarding expenses, future revenue, capital requirements and need for additional financing;

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our expectations regarding our ability to fund our projected operating requirements with our existing cash resources and the period in which we expect that such cash resources will enable us to fund such operating requirements;

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our plans to develop our drug product candidates, including our intention to prioritize our autoimmune programs, including CUE-401 and CUE-501, while preserving the value of our oncology programs;

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our plans to pursue third party support through partnerships and collaborations to further develop the CUE-100 series programs, including CUE-101 and CUE-102;

•

the timing of and our ability to submit applications for, and to obtain and maintain regulatory approvals for, our drug product candidates;

•

the potential advantages of our drug product candidates;

•

the rate and degree of market acceptance and clinical utility of our drug product candidates, if approved;

•

our estimates regarding the potential market opportunity for our drug product candidates;

•

our commercialization, marketing and manufacturing capabilities and strategy;

•

our intellectual property position;

•

our ability to identify additional products, drug product candidates or technologies with significant commercial potential that are consistent with our commercial objectives;

•

the impact of government laws and regulations;

•

our competitive position;

•

developments relating to our competitors and our industry;

•

our ability to continue as a going concern; and

•

our ability to maintain and establish collaborations or obtain additional funding.

Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on our current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of our control. Our actual results and financial condition may differ materially from those indicated in the forward-looking statements. Therefore, you should not rely on any of these forward-looking statements. Important factors that could cause our actual results and financial condition to differ materially from those indicated in the forward-looking statements include the factors discussed below under the heading “Risk Factor Summary,” and the risk factors detailed further in Item 1A., “Risk Factors” of Part I of our Annual Report on Form 10-K for the year ended December 31, 2023.

This report includes statistical and other industry and market data that we obtained from industry publications and research, surveys, and studies conducted by third parties as well as our own estimates. All of the market data used in this report involve a number of assumptions and limitations, and you are cautioned not to give undue weight to such data. Industry publications and third-party research, surveys, and studies generally indicate that their information has been obtained from sources believed to be reliable,

although they do not guarantee the accuracy or completeness of such information. Our estimates of the potential market opportunities for our drug product candidates include several key assumptions based on our industry knowledge, industry publications, third-party research, and other surveys, which may be based on a small sample size and may fail to accurately reflect market opportunities. While we believe that our internal assumptions are reasonable, no independent source has verified such assumptions.

Any forward-looking statement made by us in this Quarterly Report on Form 10-Q is based only on information currently available to us and speaks only as of the date on which it is made. We undertake no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

RISK FACTOR SUMMARY

Investment in our securities involves risk. You should carefully consider the following summary of what we believe to be the principal risks facing our business, in addition to the risks described more fully in Item 1A, “Risk Factors” of Part I of our Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 28, 2024 and other information included in this report. The risks and uncertainties described below are not the only risks and uncertainties we face. Additional risks and uncertainties not presently known to us or that we presently deem less significant may also impair our business operations.

If any of the following risks occurs, our business, financial condition and results of operations and future growth prospects could be materially and adversely affected, and the actual outcomes of matters as to which forward-looking statements are made in this report could be materially different from those anticipated in such forward-looking statements.

•

We are a clinical-stage biopharmaceutical company, have no history of generating commercial revenue, have a history of operating losses, and may never achieve or maintain profitability.

•

We currently do not have, and may never develop, any FDA-approved or commercialized products.

•

We are substantially dependent on the success of our drug product candidates, only two of which are currently being tested in clinical trials, and significant additional research and development and clinical testing will be required before we can potentially seek regulatory approval for or commercialize any of our drug product candidates.

•

We have limited experience in conducting clinical trials and no history of commercializing biologic products, which may make it difficult to evaluate the prospects for our future viability.

•

Success in preclinical studies or early clinical trials may not be indicative of results obtained in later trials.

•

We plan to continue to seek collaborations or strategic alliances. However, we may not be able to establish such relationships, and relationships we have established may not provide the expected benefits.

•

Our collaboration agreement with LG Chem contains exclusivity provisions that restrict our research and development activities.

•

We may not be successful in our efforts to identify additional drug product candidates. Due to our limited resources and access to capital, we must prioritize the development of certain drug product candidates; these decisions may prove to be wrong and may adversely affect our business.

•

We face significant competition from other biotechnology and pharmaceutical companies, and our operating results will suffer if we fail to compete effectively. Our competitors may be able to develop other compounds or drugs that are able to achieve similar or better results than our drug product candidates.

•

We rely on third parties to conduct our clinical trials. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may not be able to successfully complete development of, obtain regulatory approval for, or commercialize our drug product candidates and our business could be substantially harmed.

•

We rely completely on third parties to manufacture our preclinical and clinical drug supplies for our drug product candidates.

•

If we or our licensor(s) are unable to protect our or its intellectual property, then our financial condition, results of operations and the value of our technology and potential products could be adversely affected.

•

Even if we, or any collaborators we may have, obtain marketing approvals for any of our drug product candidates, the terms of approvals and ongoing regulation of our products could require the substantial expenditure of resources and may limit how we, or they, manufacture and market our products, which could materially impair our ability to generate revenue.

•

We will need substantial additional financing to support our growth and ongoing operations.

•

Our recurring losses from operations raise substantial doubt regarding our ability to continue as a going concern.

•

We have a loan agreement that requires us to meet certain operating covenants and place restrictions on our operating and financial flexibility.

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Cue Biopharma, Inc.

Condensed Consolidated Balance Sheets

(Unaudited)

(in thousands, except share and per share amounts)


	September 30, 2024			December 31, 2023
ASSETS
Current assets:
Cash and cash equivalents	$	32,420		$	48,514
Accounts receivable		3,152			1,698
Prepaid expenses and other current assets		1,684			1,242
Total current assets		37,256			51,454
Property and equipment, net		570			795
Operating lease right-of-use assets		4,034			6,323
Deposits		2,690			2,690
Restricted cash		152			151
Other long-term assets		108			117
Total assets	$	44,810		$	61,530
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	6,474		$	3,501
Accrued expenses		3,199			4,137
Research and development contract liability, current portion		259			2,112
Operating lease liabilities, current		2,895			3,368
Current portion of long-term debt, net		3,963			3,963
Total current liabilities		16,790			17,081
Operating lease liabilities, non-current		1,326			3,162
Long-term debt, net		1,328			4,202
Total liabilities	$	19,444		$	24,445
Commitments and contingencies (Note 11)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized and 0 shares issued and outstanding at September 30, 2024 and December 31, 2023		—			—
Common stock, $0.001 par value; 100,000,000 shares authorized; 60,207,717 and 47,215,116 shares issued and outstanding, at September 30, 2024 and December 31, 2023, respectively		60			47
Additional paid in capital		357,674			338,228
Accumulated deficit		(332,368	)		(301,190	)
Total stockholders’ equity		25,366			37,085
Total liabilities and stockholders’ equity	$	44,810		$	61,530

The accompanying notes are an integral part of these condensed consolidated financial statements.

Cue Biopharma, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss

(Unaudited)

(in thousands, except share and per share amounts)


	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
Collaboration revenue	$	3,336		$	2,100		$	7,711		$	3,669
Operating expenses:
General and administrative		2,867			3,645			10,564			12,071
Research and development		9,381			9,874			29,111			29,915
Gain on fixed asset disposal		(97	)		—			(97	)		—
Total operating expenses		12,151			13,519			39,578			41,986
Loss from operations		(8,815	)		(11,419	)		(31,867	)		(38,317	)
Other income (expense):
Interest income		343			700			1,332			1,756
Interest expense		(188	)		(286	)		(643	)		(738	)
Total other income, net		155			414			689			1,018
Net loss	$	(8,660	)	$	(11,005	)	$	(31,178	)	$	(37,299	)
Unrealized gain from available-for-sale securities		—			5			—			96
Comprehensive loss	$	(8,660	)	$	(11,000	)	$	(31,178	)	$	(37,203	)
Net loss per common share – basic and diluted	$	(0.17	)	$	(0.24	)	$	(0.62	)	$	(0.82	)
Weighted average common shares outstanding – basic and diluted		51,229,701			46,358,555			50,292,983			45,274,124

The accompanying notes are an integral part of these condensed consolidated financial statements.

Cue Biopharma, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(Unaudited)

(in thousands, except share and per share amounts)


For the three months ended September 30, 2024 and 2023:
	Common Stock				Additional		Accumulated Other						Total
	Shares		Par Value		Paid-in Capital		Comprehensive Income (Loss)			Accumulated Deficit			Stockholders’ Equity
Balance, June 30, 2023		43,744,414	$	44	$	322,715	$	(5	)	$	(276,750	)	$	46,004
Issuance of common stock from ATM offering, net of sales agent commission and fees		1,378,867		1		5,588		—			—			5,589
Stock-based compensation		—		—		2,073		—			—			2,073
Unrealized gain from available-for-sale securities		—		—		—		5			—			5
Net loss		—		—		—		—			(11,005	)		(11,005	)
Balance, September 30, 2023		45,123,281	$	45	$	330,376	$	—		$	(287,755	)	$	42,666

Balance, June 30, 2024		48,643,316	$	48	$	345,282	$	—		$	(323,708	)	$	21,622
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs		11,564,401		12		10,809		—			—			10,821
Stock-based compensation		—		—		1,583		—			—			1,583
Net loss		—		—		—		—			(8,660	)		(8,660	)
Balance, September 30, 2024		60,207,717	$	60	$	357,674	$	—		$	(332,368	)	$	25,366


For the nine months ended September 30, 2024 and 2023:
	Common Stock				Additional		Accumulated Other						Total
	Shares		Par Value		Paid-in Capital		Comprehensive Income (Loss)			Accumulated Deficit			Stockholders’ Equity
Balance, December 31, 2022		43,042,548	$	43	$	316,192	$	(96	)	$	(250,456	)	$	65,683
Issuance of common stock from ATM offering, net of sales agent commission and fees		1,915,131		2		7,603		—			—			7,605
Stock-based compensation		—		—		6,108		—			—			6,108
Exercise of stock options		165,602		—		473		—			—			473
Unrealized gain from available-for-sale securities		—		—		—		96			—			96
Net loss		—		—		—		—			(37,299	)		(37,299	)
Balance, September 30, 2023		45,123,281	$	45	$	330,376	$	—		$	(287,755	)	$	42,666

Balance, December 31, 2023		47,215,116	$	47	$	338,228	$	—		$	(301,190	)	$	37,085
Issuance of common stock from ATM offering, net of sales agent commission and fees		1,428,200		1		3,353		—			—			3,354
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs		11,564,401		12		10,809		—			—			10,821
Stock-based compensation		—		—		5,284		—			—			5,284
Net loss		—		—		—		—			(31,178	)		(31,178	)
Balance, September 30, 2024		60,207,717	$	60	$	357,674	$	—		$	(332,368	)	$	25,366

The accompanying notes are an integral part of these condensed consolidated financial statements.

Cue Biopharma, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)


	Nine Months Ended September 30,
	2024			2023
Cash flows from operating activities
Net loss	$	(31,178	)	$	(37,299	)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization		299			443
Stock-based compensation		5,284			6,108
Decrease in the carrying amount of right-of-use-assets		2,289			2,142
Gain on sale of property and equipment		(97	)		(2	)
Amortization of premium/discount on purchased securities		—			(234	)
Amortization of debt issuance costs		28			28
Accretion of final payment on term loans		98			98
Changes in operating assets and liabilities:
Accounts receivable		(1,454	)		(1,603	)
Prepaid expenses and other current assets		(442	)		(324	)
Deposits		—			139
Accounts payable		2,972			(251	)
Accrued expenses		(938	)		1,573
Research and development contract liability		(1,853	)		2,238
Operating lease liability		(2,309	)		(2,064	)
Accrued interest		—			5
Net cash used in operating activities		(27,301	)		(29,003	)
Cash flows from investing activities
Purchases of property and equipment		(64	)		—
Cash received from the sale of property and equipment		97			2
Redemption of marketable securities		—			25,000
Net cash provided by investing activities		33			25,002
Cash flows from financing activities
Proceeds from ATM offering, net of sales agent commission and fees		3,354			7,605
Proceeds from issuance of common stock, warrants and pre-funded warrants, net of transaction costs		10,821			—
Repayment of term loans		(3,000	)		(1,000	)
Proceeds from exercise of stock options		—			473
Net cash provided by financing activities		11,175			7,078
Net (decrease) increase in cash, cash equivalents, and restricted cash		(16,093	)		3,077
Cash, cash equivalents, and restricted cash at beginning of period		48,665			51,764
Cash, cash equivalents, and restricted cash at end of period	$	32,572		$	54,841
Supplemental disclosures of non-cash investing and financing activities:
Cash paid for interest	$	547		$	768

The accompanying notes are an integral part of these condensed consolidated financial statements.

Cue Biopharma, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

Organization and Basis of Presentation

Cue Biopharma, Inc. (the "Company") is a clinical-stage biopharmaceutical company developing a novel class of therapeutic biologics to selectively modulate disease-specific T cells directly within the patient’s body. The Company's vision is to translate nature's signals, or "cues", into protein therapeutics by generating a new class of T cell engagers for selective modulation of disease specific T cells. The Company’s corporate office and research facilities are located in Boston, Massachusetts.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. The Company is in the development stage and has incurred recurring losses and negative cash flows from operations since inception. As of September 30, 2024, the Company had cash and cash equivalents of $32.4 million. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations and to fund research and development costs in order to seek approval for commercialization of its drug product candidates. While the Company is exploring raising additional capital through a combination of equity offerings, collaborations, and other strategic alliances, and, depending on the availability and level of additional financings, cash expenditure reduction, there is no guarantee that the Company will be successful in these mitigation efforts. The Company’s failure to raise capital as and when needed would have a negative impact on its financial condition and its ability to pursue its business strategies as this capital is necessary for the Company to perform the research and development activities required to develop and commercialize the Company’s drug product candidates in order to generate future revenue streams. Therefore, management has determined that the Company’s accumulated deficit, history of losses, negative cash flows from operations and future expected losses raise substantial doubt about the Company’s ability to continue as a going concern within one year of the issuance date of these financial statements.

Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements as of September 30, 2024, and for the three and nine months ended September 30, 2024 and 2023, have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”) and generally accepted accounting principles in the United States (“U.S. GAAP”) for financial information, which prescribes elimination of all significant intercompany accounts and transactions in the accounts of the Company and its wholly owned subsidiary, Cue Biopharma Securities Corp., which was incorporated in the Commonwealth of Massachusetts in December 2018. In the opinion of management, these financial statements reflect all adjustments which are necessary for a fair statement of the Company’s financial position and results of its operations, as of and for the periods presented. These financial statements should be read in conjunction with the financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K filed with the SEC on March 28, 2024.

Interim results for the three and nine months ended September 30, 2024 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2024, or any future periods.

Public Offerings

On September 26, 2024, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with Oppenheimer & Co. Inc., as representative of the several underwriters named therein (collectively, the “Underwriters”), relating to an underwritten public offering of (i) 11,564,401 shares (the “Shares”) of the Company’s common stock, $0.001 par value per share, and accompanying common stock warrants (“Common Stock Warrants”) to purchase 2,891,100 shares of common stock, and (ii) to certain investors in lieu of common stock, pre-funded warrants (the “Pre-Funded Warrants”) to purchase 12,435,599 shares of common stock and accompanying Common Stock Warrants to purchase 3,108,900 shares of common stock. All of the Shares, the Pre-Funded Warrants and the Common Stock Warrants were sold by the Company. Each Share was offered and sold together with an accompanying Common Stock Warrant at a combined offering price of $0.50, and each Pre-Funded Warrant was offered and sold together with an accompanying Common Stock Warrant at a combined offering price of $0.499, which is equal to the combined offering price per share of common stock and accompanying Common Stock Warrant less the $0.001 exercise price of each Pre-Funded Warrant. The Underwriters purchased (i) each Share and accompanying Common Stock Warrant from the Company pursuant to the Underwriting Agreement at a combined price of $0.47 and (ii) each Pre-Funded Warrant and accompanying Common Stock Warrant from the Company pursuant to the Underwriting Agreement at a combined price of $0.46906. The Company recorded net proceeds from the offering of $10.8 million, after deducting underwriting discounts and commissions and offering expenses of $1.1

million, and excluding any proceeds that may be received from exercise of the Common Stock Warrants and the Pre-Funded Warrants.

In October 2021, the Company entered into an open market sale agreement (the “October 2021 ATM Agreement”) with Jefferies LLC ("Jefferies"), as agent, to sell shares of the Company’s common stock for aggregate gross proceeds of up to $80 million, from time to time, through an at-the-market equity offering program. The October 2021 ATM Agreement will terminate upon the earliest of (a) the sale of $80 million of shares of the Company’s common stock pursuant to the October 2021 ATM Agreement or (b) the termination of the October 2021 ATM Agreement by the Company or Jefferies. The Company did not sell any shares during the three months ended September 30, 2024 under the October 2021 ATM Agreement. During the three months ended September 30, 2023, the Company sold 1,378,867 shares of common stock under the October 2021 ATM Agreement, for proceeds of $5.6 million, net of commission paid, but excluding transaction expenses. During the nine months ended September 30, 2024 and September 30, 2023, the Company sold 1,428,200 and 1,915,131 shares, respectively, of common stock under the October 2021 ATM Agreement, for proceeds of $3.4 million and $7.6 million, respectively, net of commission paid, but excluding transaction expenses. As of September 30, 2024, the Company sold an aggregate of 9,028,573 shares of common stock under the October 2021 ATM Agreement for proceeds of $40.4 million, net of commission paid, but excluding transaction expenses, since its inception.

Consolidation

The accompanying condensed consolidated financial statements include the Company and its wholly owned subsidiary, Cue Biopharma Securities Corp. The Company has eliminated all intercompany transactions.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Significant estimates include estimates related to collaboration revenue, the accounting for potential liabilities and accrued expenses, the assumptions utilized in valuing stock-based compensation issued for services, the realization of deferred tax assets, and the useful life with respect to long-lived assets and intangibles. Actual results could differ from those estimates.

Cash Concentrations

The Company maintains its cash balances with financial institutions in federally insured accounts and may periodically have cash balances in excess of insurance limits. The Company maintains its accounts with financial institutions with a high credit rating. The Company has not experienced any losses to date from its deposits with these financial institutions and believes that it is not exposed to any significant credit risk on cash.

Cash and Cash Equivalents

The Company considers all highly liquid investments with a maturity of three months or less at the date of purchase to be cash equivalents. The Company currently invests available cash in money market funds.

Marketable Securities

Marketable securities consist of investments with original maturities greater than ninety days and less than one year from the date of the Company's condensed consolidated balance sheets. The Company classifies all of its investments as available-for-sale securities. Accordingly, these investments are recorded at fair value, which is based on quoted market prices. Unrealized gains and losses are recognized and determined on a specific identification basis and are included in comprehensive loss. Realized gains and losses are determined on a specific identification basis and are included in other income on the condensed consolidated statements of operations and comprehensive loss. Amortization and accretion of discounts and premiums is recorded in interest income. The Company had no marketable securities as of September 30, 2024 and December 31, 2023. At September 30, 2024, the Company invested available cash in money market funds, and at September 30, 2023 the Company invested available cash in U.S. Treasury securities.

Restricted Cash

The Company had $0.2 million in restricted cash deposited with a separate commercial bank to collateralize Company credit cards as of September 30, 2024 and December 31, 2023.

Property and Equipment

Property and equipment is recorded at cost. Major improvements are capitalized, while maintenance and repairs are charged to expense as incurred. Gains and losses from dispositions of property and equipment are included in income and expense when realized. Amortization of leasehold improvements is provided using the straight-line method over the shorter of the lease term or the useful life of the underlying assets. Depreciation of property and equipment is provided using the straight-line method over the following estimated useful lives:


Laboratory equipment		5 years
Computer equipment		3 years
Furniture and fixtures		3-8 years

The Company recognizes depreciation and amortization expense in general and administrative expenses and in research and development expenses in the Company’s condensed consolidated statements of operations and comprehensive loss, depending on how each category of property and equipment is utilized in the Company’s business activities.

Trademark

Trademark consists of the Company’s right, title and interest to the CUE BIOLOGICS Mark, and any derivative mark incorporating CUE, throughout the world, together with all associated goodwill and common law rights appurtenant thereto, including, but not limited to, any right, title and interest in any corporate name, company name, business, name, trade name, dba, domain name, or other source identifier incorporating CUE.

The Company has classified the trademark as a component of other long-term assets, having a useful life of 15 years. The Company evaluates the status of this intangible asset for amortization and impairment at each quarter end and year end reporting date. For each of the three months ended September 30, 2024 and 2023, the Company recorded approximately $3,000 in amortization expense on a straight-line basis. For each of the nine months ended September 30, 2024 and September 30, 2023, the Company recorded approximately $9,000 in amortization expense on a straight-line basis.

Debt Issuance Costs

Debt issuance costs are deferred and presented as a reduction to long-term debt. Debt issuance costs are amortized using the effective interest rate method over the term of the loan. Amortization of deferred debt issuance costs are included in interest expense in the condensed consolidated statements of operations and comprehensive loss.

Revenue Recognition

The Company recognizes collaboration revenue under certain of the Company’s license and collaboration agreements that are within the scope of Accounting Standards Codification (“ASC”), Topic 606, Revenue from Contracts with Customers (“ASC 606”). The Company’s contracts with customers typically include promises related to licenses to intellectual property and research and development services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the “expected value method” method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled for its one open contract. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, the Company evaluates whether the associated event is considered probable of achievement and estimates the amount to be included in the transaction price using the expected value method.

Research and Development Expenses

Research and development expenses consist primarily of compensation costs, fees paid to consultants, outside service providers and organizations (including research institutes at universities), facility costs, and development and clinical trial costs with respect to the Company’s drug product candidates.

Research and development expenses incurred under contracts are expensed ratably over the life of the underlying contracts, unless the achievement of milestones, the completion of contracted work, or other information indicates that a different pattern of performance is more appropriate. Other research and development expenses are charged to operations as incurred.

Nonrefundable advance payments are recognized as an expense as the related services are performed. The Company evaluates whether it expects the services to be rendered at each quarter end and year end reporting date. If the Company does not expect the services to be rendered, the advance payment is charged to expense. Nonrefundable advance payments for research and development services are included in prepaid and other current assets on the Company's condensed consolidated balance sheets. To the extent that a nonrefundable advance payment is for contracted services to be performed within 12 months from the reporting date, such advance is included in current assets; otherwise, such advance is included in non-current assets.

The Company evaluates the status of its research and development agreements and contracts, and the carrying amount of the related assets and liabilities, at each quarter end and year end reporting date, and adjusts the carrying amounts and their classification on the Company's condensed consolidated balance sheets as appropriate.

Patent Expenses

The Company is the exclusive worldwide licensee of, and has patent applications pending for, numerous domestic and foreign patents. Due to the significant uncertainty associated with the successful development of one or more commercially viable drug product candidates based on the Company’s research efforts and any related patent applications, all patent costs, including patent-related legal fees, filing fees and other costs are charged to general and administrative expense as incurred. For the three and nine months ended September 30, 2024, patent expenses were $0.5 million and $1.5 million, respectively. For the three and nine months ended September 30, 2023, patent expenses were $0.5 million and $1.6 million, respectively.

Licensing Fees and Costs

Licensing fees and costs consist primarily of costs relating to the acquisition of the Company’s license agreement with the Albert Einstein College of Medicine (“Einstein”), including related royalties, maintenance fees, milestone payments and product development costs. Licensing fees and costs are charged to research and development expense as incurred.

Long-Lived Assets

The Company reviews long-lived assets, consisting of property and equipment, for impairment when events or changes in circumstances indicate the carrying value of these assets may exceed their current fair values. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the fair value of the assets. Assets to be disposed of are separately presented in the Company's condensed consolidated balance sheets and reported at the lower of the carrying amount or fair value less costs to sell and are no longer depreciated. The Company has not historically recorded any impairment to its long-lived assets. In the future, if events or market conditions affect the estimated fair value to the extent that a long-lived asset is impaired, the Company will adjust the carrying value of these long-lived assets in the period in which the impairment occurs.

Leases

The Company accounts for leases under ASC 842, Leases, which requires a lessee to record a right-of-use asset and a corresponding lease liability for most lease arrangements on the Company's condensed consolidated balance sheets. Under the standard, disclosure of key information about leasing arrangements to assist users of the financial statements with assessing the amount, timing and uncertainty of cash flows arising from leases are required.

Stock-Based Compensation

The Company periodically issues stock-based awards to officers, directors, employees, Scientific and Clinical Advisory Board members and consultants for services rendered. Such issuances vest and expire according to terms established at the issuance date.

Stock-based payments to officers, directors, employees, Scientific and Clinical Advisory Board members and consultants, including grants of employee stock options, are recognized in the financial statements based on their grant date fair values. Stock option grants, which are generally time-vested, are measured at the grant date fair value and charged to operations on a straight-line basis over the service period, which generally approximates the vesting term. The Company also grants performance-based awards periodically to officers of the Company. The Company recognizes compensation costs related to performance awards over the requisite service period if and when the Company concludes that it is probable that the performance condition will be achieved.

The fair value of stock options and restricted stock units is determined utilizing the Black-Scholes option-pricing model, which is affected by several variables, including the risk-free interest rate, the expected dividend yield, the life of the equity award, the exercise price of the stock option as compared to the fair value of the common stock on the grant date, and the estimated volatility of the common stock over the term of the equity award.

The Company recognizes the fair value of stock-based compensation in general and administrative expenses and in research and development expenses in the Company’s condensed consolidated statements of operations and comprehensive loss, depending on the type of services provided by the recipient of the equity award. The Company accounts for forfeitures as they occur.

Comprehensive Income (Loss)

Components of comprehensive income or loss, including net income or loss, are reported in the financial statements in the period in which they are recognized. Other comprehensive income or loss is defined as the change in equity during a period from transactions and other events and circumstances from non-owner sources. Net income (loss) and other comprehensive income (loss) are reported net of any related tax effect to arrive at comprehensive income (loss). Comprehensive income (loss) includes net income (loss) as well as changes in stockholders’ equity that result from transactions and economic events other than those with stockholders. The Company’s only element of other comprehensive income (loss) in periods presented was unrealized gain or loss on available-for-sale securities.

Earnings (Loss) Per Share

The Company’s computation of earnings (loss) per share (“EPS”) for the respective periods includes basic and diluted EPS. Basic EPS is measured as the income (loss) attributable to common stockholders divided by the weighted average number of common shares outstanding for the period. Diluted EPS is similar to basic EPS but presents the dilutive effect on a per share basis of potential common shares that would result from the exercise of outstanding stock options and warrants as if they had been exercised at the beginning of the periods presented, or issuance date, if later. Potential common shares that have an anti-dilutive effect (i.e., those that increase income per share or decrease loss per share) are excluded from the calculation of diluted EPS. Basic and diluted loss per common share is the same for all periods presented because all outstanding stock options and warrants are anti-dilutive.

Per ASC 260-10-45-13, shares issuable for little to no consideration should be included in the number of outstanding shares used for basic EPS. The Financial Accounting Standards Board (“FASB”) proposed that warrants or options exercisable for little to no cost (sometimes referred to as “penny warrants”) be included in the denominator of basic EPS (and therefore diluted EPS) once there were no further vesting conditions or contingencies associated with them. The Company included 13,967,039 pre-funded warrants in the denominator of basic EPS at September 30, 2024.

At September 30, 2024 and 2023, the Company excluded the outstanding securities summarized below, which entitle the holders thereof to acquire shares of common stock, from its calculation of EPS, as their effect would have been anti-dilutive.


	September 30,
	2024		2023
Common stock warrants		15,188,406		9,188,406
Common stock options		10,611,617		7,500,480
Total		25,800,023		16,688,886

Fair Value of Financial Instruments

The authoritative guidance with respect to fair value established a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels and requires that assets and liabilities carried at fair value be classified and disclosed in one of three categories, as presented below.

Level 1. Observable inputs such as quoted prices in active markets for an identical asset or liability that the Company has the ability to access as of the measurement date. Financial assets and liabilities utilizing Level 1 inputs include active exchange-traded securities and exchange-based derivatives.

Level 2. Inputs, other than quoted prices included within Level 1, which are directly observable for the asset or liability or indirectly observable through corroboration with observable market data. Financial assets and liabilities utilizing Level 2 inputs include fixed income securities, non-exchange-based derivatives, mutual funds, and fair-value hedges.

Level 3. Unobservable inputs in which there is little or no market data for the asset or liability which requires the reporting entity to develop its own assumptions. Financial assets and liabilities utilizing Level 3 inputs include infrequently traded non-exchange-based derivatives and commingled investment funds and are measured using present value pricing models.

The Company determines the level in the fair value hierarchy within which each fair value measurement falls in its entirety, based on the lowest level input that is significant to the fair value measurement in its entirety. In determining the appropriate levels, the Company performs an analysis of the assets and liabilities at each reporting period end.

The Company had $32.4 million and $39.1 million in cash equivalents as of September 30, 2024 and December 31, 2023, respectively.

The carrying value of financial instruments (consisting of cash, a certificate of deposit, debt, accounts payable, accrued compensation and accrued expenses) is considered to be representative of their respective fair values due to the short-term nature of those instruments.

Recent Accounting Pronouncements

In November 2023, the FASB issued Accounting Standards Update ("ASU") No. 2023-07, Segment Reporting (Topic 280) (“ASU 2023-07”). The guidance in ASU 2023-07 expands prior reportable segment disclosure requirements by requiring entities to disclose significant segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and details of how the CODM uses financial reporting to assess their segment’s performance. The standard is effective for fiscal years beginning after December 15, 2023 and interim periods in fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is evaluating this standard's potential impact on its condensed consolidated financial statements and related disclosures.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). The guidance in ASU 2023-09 improves the transparency of income tax disclosures by greater disaggregation of information in the rate reconciliation and income taxes paid disaggregated by jurisdiction. The standard is effective for public companies for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact that the adoption of ASU 2023-09 may have on its condensed consolidated financial statements.

Management does not believe that any other recently issued, but not yet effective, authoritative guidance, if currently adopted, would have a material impact on the Company’s financial statement presentation or disclosures.

Fair Value

The Company accounts for its financial assets and liabilities using fair value measurements. The authoritative accounting guidance defines fair value, establishes a framework for measuring fair value under U.S. GAAP and enhances disclosures about fair value measurements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The following table presents information about the Company’s assets that are measured at fair value on a recurring basis as of September 30, 2024 and December 31, 2023, and indicate the level of the fair value hierarchy utilized to determine such fair value:


	Fair Value Measurements as of September 30, 2024
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	31,784	$	—	$	—	$	31,784
Total	$	31,784	$	—	$	—	$	31,784

	Fair Value Measurements as of December 31, 2023
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	39,148	$	—	$	—	$	39,148
Total	$	39,148	$	—	$	—	$	39,148

As of September 30, 2024, the Company had $31.8 million in cash equivalents. The Company measures the cash equivalents that are invested in money market funds using Level 1 inputs for identical securities. As of December 31, 2023, the Company had $39.1 million in cash equivalents. During the three and nine months ended September 30, 2024, and the year ended December 31, 2023, there were no transfers between Level 2 and Level 3.

Property and Equipment

Property and equipment as of September 30, 2024 and December 31, 2023 consisted of the following:


	September 30, 2024			December 31, 2023
	(in thousands)
Laboratory equipment	$	4,098		$	4,069
Furniture and fixtures		74			81
Computer equipment		180			143
Leasehold improvements		118			118
Total property and equipment		4,470			4,411
Less: accumulated depreciation		(3,900	)		(3,616	)
Property and equipment, net	$	570		$	795

Depreciation expense for the three months ended September 30, 2024 and 2023 was $0.1 million and $0.1 million, respectively. Depreciation expense for the nine months ended September 30, 2024 and 2023 was $0.3 million and $0.4 million, respectively. Depreciation expense for both the three months ended September 30, 2024 and 2023 excludes trademark amortization expense of $3,000. Depreciation expense for both the nine months ended September 30, 2024 and 2023 excludes trademark amortization expense of $9,000. The Company sold fully depreciated lab equipment and collected cash of $0.1 million for both the three and nine months ended September 30, 2024. During the nine months ended September 30, 2023, the Company sold fully depreciated lab equipment with an acquisition cost of $41,450 and collected cash of $2,000. The Company recorded a gain on the sale of fixed assets of $2,000, which is presented in other income on the condensed consolidated statements of operations and comprehensive loss.

Loan with First Citizens Bank (formerly with Silicon Valley Bank)

On February 15, 2022 (the “Closing Date”), the Company entered into a Loan and Security Agreement (the “Loan Agreement”), with Silicon Valley Bank, as lender (“SVB”). The Company drew $10,000,000 in term loans under the Loan Agreement (the "Term Loans") on the Closing Date. The Loan Agreement was amended in April 2023 and October 2024.

The Term Loans bear interest at a floating rate per annum equal to the greater of (A) the prime rate (as published in the money rates section of The Wall Street Journal) plus 2.25% and (B) 5.50%. The Term Loans were interest only from the Closing Date through June 30, 2023, after which the Company is required to pay 30 equal monthly installments of principal. At September 30, 2024, the interest rate was 10.25% which is based on the prime rate plus 2.25%.

The Term Loans may be prepaid in full with payment of a 1.00% prepayment premium. Upon prepayment or repayment in full of the Term Loans, the Company will be required to pay a one-time final payment fee equal to 5.00% of the original principal amount of any funded Term Loans being repaid. This one-time final payment fee is recorded to interest expense using the effective interest method over the period of the Term Loans in the condensed consolidated statements of operations and comprehensive loss.

The Term Loans and related obligations under the Loan Agreement are secured by substantially all of the Company’s properties, rights and assets, except for its intellectual property which is subject to a negative pledge under the Loan Agreement.

The Loan Agreement, as amended, contains customary representations, warranties, events of default and covenants. In addition to the foregoing, the Company is required to have at all times on deposit in accounts of the Company maintained with SVB, unrestricted and unencumbered cash in an amount equal to the lesser of (i) 100% of the dollar value of the Company’s consolidated cash, in the aggregate, at all financial institutions and (ii) $20,000,000. On March 10, 2023, SVB was closed and the Federal Deposit Insurance Corporation (the “FDIC”) was appointed receiver for the bank. The FDIC created a successor bridge bank, and all deposits and loans of SVB were transferred to the bridge bank under a systemic risk exception approved by the United States Department of the Treasury, the Federal Reserve and the FDIC. On March 27, 2023, First Citizens Bank & Trust Company (“First Citizens Bank”), assumed all of SVB’s deposits and certain other liabilities and acquired substantially all of SVB’s loans and certain other assets from the FDIC. First Citizens Bank continues to hold the Company’s Term Loans under the same existing terms and covenants which were in place with SVB.

During the three and nine months ended September 30, 2024, the Company recognized interest expense related to the Term Loans of $0.1 million and $0.5 million, respectively, and interest expense related to accretion of the final payment of less than $0.1 million and $0.1 million, respectively. During the three and nine months ended September 30, 2023, the Company recognized interest expense related to the Term Loans of $0.3 million and $0.8 million, respectively, and interest expense related to accretion of the final payment of $33,000 and $98,000, respectively.

The following table presents the aggregate maturities of long-term debt as of September 30, 2024 (in thousands):


Year
2024	$	1,000
2025		4,000
Total	$	5,000

The following table presents long-term and current portions of debt as of September 30, 2024 (in thousands):


Long-term debt	$	1,000
Accretion of final payment		337
Less: unamortized debt issuance costs		(9	)
Long-term debt, net	$	1,328
Current portion of long-term debt	$	4,000
Less: unamortized debt issuance costs		(37	)
Current portion of long-term debt, net	$	3,963

Debt Issuance Costs

The Company has incurred $142,000 in debt issuance costs related to the Loan Agreement. For each of the three months ended September 30, 2024 and 2023, the Company recorded approximately $9,000 in amortization of debt issuance costs to interest expense in the condensed consolidated statements of operations and comprehensive loss. For each of the nine months ended September 30, 2024 and 2023, the Company recorded $27,729 in amortization of debt issuance costs to interest expense in the condensed consolidated statements of operations and comprehensive loss.

6. Accrued Expenses

Accrued expenses consist of the following:


	September 30,		December 31,
(In thousands)	2024		2023
Contract research services	$	1,534	$	1,411
Employee and board compensation		800		2,219
Professional services		499		344
Contract manufacturing services		367		163
Total	$	3,199	$	4,137

Einstein License Agreement

On January 14, 2015, the Company entered into a license agreement (the “Einstein License”), with Einstein for certain patent rights relating to the Company’s core technology platform for the engineering of biologics to control T cell activity, precision, immune-modulatory drug product candidates, and two supporting technologies that enable the discovery of costimulatory signaling molecules (ligands) and T-cell targeting peptides. On July 31, 2017, the Company entered into an amended and restated license agreement which modified certain obligations of the parties under the Einstein License. The Einstein License was further amended on January 13, 2024.

Under the Einstein License, the Company holds an exclusive worldwide license, with the right to sublicense, import, make, have made, use, provide, offer to sell, and sell all products, processes and services that use the patents covered by the Einstein License, including certain technology received from Einstein relating thereto (the “Licensed Products”). Under the Einstein License, the Company is required to:

•

Pay royalties and amounts based on a certain percentage of proceeds, as defined in the Einstein License, from sales of Licensed Products and sublicense agreements.

•

Pay escalating annual maintenance fees, which are nonrefundable, but are creditable against the amount due to Einstein for royalties.

•

Make significant payments based upon the achievement of certain milestones, as defined in the Einstein License. Payments made upon achievement of milestones are nonrefundable and are not creditable against any other payment due to Einstein. At September 30, 2024, the Company has made aggregate payments totaling $1.2 million since inception with respect to achievement of these milestones.

•

Incur minimum product development costs until the first commercial sale of the first licensed product.

The Company was in compliance with its obligations under the Einstein License at September 30, 2024 and 2023.

The Einstein License expires upon the expiration of the Company’s last obligation to make royalty payments to Einstein which may be due with respect to certain Licensed Products, unless terminated earlier under the provisions thereof. The Einstein License includes certain termination provisions if the Company fails to meet its obligations thereunder.

Pursuant to the Einstein License, the Company issued to Einstein 671,572 shares of the Company’s common stock in connection with the consummation of the initial public offering of its common stock on December 27, 2017.

The Company accounts for license fees incurred in connection with the Einstein License in accordance with ASC 730, Research and Development. Please refer to Note 10 Collaboration Revenue.

Stock-Based Compensation

Stock Option Valuation

For stock options requiring an assessment of value during the nine months ended September 30, 2024 and 2023, the fair value of each stock option award was estimated using the Black-Scholes option-pricing model utilizing the following assumptions:


		September 30, 2024
Risk-free interest rate		3.83% - 4.43%
Expected dividend yield		0%
Expected volatility		36.24% - 109.86%
Expected life		5.50 to 8.91 years

		September 30, 2023
Risk-free interest rate		3.40% - 4.16%
Expected dividend yield		0%
Expected volatility		97.03% - 110.4%
Expected life		5.50 to 6.25 years

A summary of stock option activity for the nine months ended September 30, 2024 is as follows:


	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in Years)
Stock options outstanding at December 31, 2023		7,492,917		$	8.41		6.12
Granted		4,183,300			1.42		—
Exercised		—			—		—
Cancelled		(1,064,600	)		7.27		—
Stock options outstanding at September 30, 2024		10,611,617			5.77		7.28
Stock options exercisable at September 30, 2024		5,240,539		$	9.27		5.27

The Company recognized $1.6 million and $5.3 million in stock-based compensation expense during the three and nine months ended September 30, 2024, respectively, related to stock options activity.

The Company recognized $2.1 million and $6.1 million in stock-based compensation expense during the three and nine months ended September 30, 2023, respectively, related to stock options activity.

As of September 30, 2024, total unrecognized stock-based compensation expense was $7.2 million, which is expected to be recognized as an operating expense in the Company’s condensed consolidated statements of operations and comprehensive loss over the weighted average remaining period of 2.02 years.

As of September 30, 2023, total unrecognized stock-based compensation expense was $12.1 million, which is expected to be recognized as an operating expense in the Company’s condensed consolidated statements of operations and comprehensive loss over the weighted average remaining period of 2.16 years.

During the three and nine months ended September 30, 2024, the Company granted stock options to purchase 1.7 million shares of common stock with a weighted average grant date fair value of $0.69 per share and stock options to purchase 4.2 million shares of common stock with a weighted average grant date fair value of $1.42 per share, respectively.

During the three and nine months ended September 30, 2023, the Company granted stock options to purchase 1.1 million shares of common stock with a weighted average grant date fair value of $4.17 per share and stock options to purchase 2.6 million shares of common stock with a weighted average grant date fair value of $3.65 per share, respectively.

As of September 30, 2024, the Company granted performance-based stock options to purchase 1.4 million shares of common stock, all of which remain unvested at September 30, 2024. The Company will incur stock-based compensation expense of $0.4 million should the vesting conditions be met in the future.

Stock-based Compensation

Stock-based compensation expense for the three and nine months ended September 30, 2024 and 2023 was included in the Company’s condensed consolidated statements of operations and comprehensive loss as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2024		2023		2024		2023
General and administrative	$	843	$	858	$	2,659	$	2,709
Research and development		740		1,215		2,625		3,399
Total stock-based compensation expense	$	1,583	$	2,073	$	5,284	$	6,108

Warrants

On September 26, 2024, the Company issued the Common Stock Warrants, exercisable for an aggregate of 6,000,000 shares of common stock with an exercise price of $0.50 and a 5-year term, and Pre-Funded Warrants, exercisable for an aggregate of 12,435,599 shares of common stock at a nominal exercise price of $0.001 per share. The Common Stock Warrants and Pre-Funded Warrants were outstanding at September 30, 2024.

On November 16, 2022, the Company issued warrants exercisable for an aggregate of 9,188,406 shares of common stock with an exercise price of $3.93 and a 5-year term (the “2022 Common Stock Warrants”) and pre-funded warrants exercisable for an aggregate of 1,531,440 shares of common stock (the “2022 Pre-Funded Warrants”) at a nominal exercise price of $0.0001 per share. The 2022 Common Stock Warrants and 2022 Pre-Funded Warrants were outstanding at September 30, 2024.

The Common Stock Warrants, Pre-Funded Warrants, 2022 Common Stock Warrants and 2022 Pre-Funded Warrants were evaluated under ASC 480, Distinguishing Liabilities from Equity, and ASC 815, Derivatives and Hedging, and the Company determined that equity classification was appropriate. The Company determined equity classification for these warrants as they do not embody an obligation for the Company to repurchase its shares and permit the holders to receive a fixed number of shares of common stock upon exercise. Per ASC 815-40-25, the Company accounts for these warrants as equity, as the Company does not provide the holder a fixed or guaranteed return.

10.

Collaboration Revenue

The Company recognizes collaboration revenue under certain of the Company’s license or collaboration agreements that are within the scope of ASC 606. The Company’s contracts with customers typically include promises related to licenses to intellectual property and research and development services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and if, over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The Company’s contracts may include options to acquire additional goods and/or services.

The terms of the Company’s arrangements with customers typically include the payment of one or more of the following: (i) non-refundable, up-front payment, and pass through costs related to research activities, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of pass through costs and milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the “expected value method” method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled for its one open contract. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Milestone payments that are not within the control of the Company or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each milestone and any related constraint, and, if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, the Company recognizes revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). To date, the Company has not recognized any development, regulatory or commercial milestones or royalty revenue resulting from any of its collaboration arrangements. Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

The Company allocates the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis, when applicable. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contract to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. The Company develops assumptions that require judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenues, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, the Company recognizes revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer. The Company uses input methods to measure progress toward the complete satisfaction of performance obligations satisfied over time. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. The Company measures progress toward satisfaction of the performance obligation over time as effort is expended.

Collaboration Agreement with LG Chem

On November 6, 2018, the Company entered into a collaboration agreement (the “LG Chem Collaboration Agreement”) with LG Chem Ltd. (“LG Chem”) related to the development of the Company’s Immuno-STATs focused in the field of oncology. Pursuant to the LG Chem Collaboration Agreement, the Company granted LG Chem an exclusive license to develop, manufacture and commercialize the Company’s lead product, CUE-101, as well as Immuno-STATs that target T cells against two additional cancer antigens, in certain Asian countries (collectively, the “LG Chem Territory”). On April 30, 2021, LG Chem’s option pursuant to the Global License and Collaboration Agreement entered into between the Company and LG Chem on December 18, 2019 and as amended on November 5, 2020 (the "Global License and Collaboration Agreement"), expired, and accordingly the Company no longer has any material obligations under the Global License and Collaboration Agreement. In June 2021, after ongoing discussions regarding the selection of the second of the two additional cancer antigens, LG Chem and the Company agreed to let the selection period expire without a second antigen being selected. The Company retains rights to develop and commercialize all assets included in the LG Chem Collaboration Agreement in the United States and in global markets outside of the LG Chem Territory. In exchange for the licenses and other rights granted to LG Chem under the LG Chem Collaboration Agreement, LG Chem made a $5.0 million equity investment in common stock of the Company and a $5.0 million nonrefundable up-front cash payment. The Company is also eligible to receive up to an additional $400.0 million in research, development, regulatory and sales milestones. In addition, the LG Chem Collaboration Agreement also provides that LG Chem will pay the Company tiered single-digit percentage royalties on net sales of commercialized drug product candidates in the LG Chem Territory.

On May 16, 2019, LG Chem paid the Company a $2.5 million milestone payment for the U.S. Food and Drug Administration’s (“FDA”) acceptance of the investigational new drug application (“IND”) for the Company’s lead drug product candidate, CUE-101, pursuant to the LG Chem Collaboration Agreement. The $2.5 million milestone payment was recorded as a contract liability upon receipt of payment as it requires deferral of revenue recognition to a future period until the Company performs its obligations under the arrangement. Of the $2.5 million milestone payment, $0.4 million was recognized as tax withholding, shown as income tax expense on the consolidated statement of operations and comprehensive loss.

On December 7, 2020, the Company earned a $1.3 million milestone payment on the selection of a preclinical candidate pursuant to the LG Chem Collaboration Agreement. The $1.3 million milestone payment was recorded as a contract liability upon receipt. Revenue related to this milestone payment was recognized by the Company pursuant to the Company’s revenue recognition policy in relation to the performance of its obligations related to the development of this preclinical candidate. Of the $1.25 million milestone payment, $0.2 million was withheld as payment of foreign tax withholding and shown as income tax expense on the consolidated statement of operations and comprehensive loss.

On November 23, 2021, the Company earned a $3.0 million milestone payment for the selection of a clinical product candidate in partnership with LG Chem. The $3.0 million milestone payment was recorded as a contract liability upon receipt. Revenue related to this milestone payment was recognized by the Company pursuant to the Company’s revenue recognition policy in relation to the performance of its obligations related to the development of this preclinical candidate. Of the $3.0 million milestone payment, $0.5 million was withheld as payment of foreign tax withholding and shown as income tax expense on the condensed consolidated statements of operations and comprehensive loss. Cash was collected in relation to this milestone payment in February 2022.

Aside from the $6.8 million in milestone payments earned to date, the Company does not believe that any variable consideration should be included in the transaction price as of September 30, 2024. Such assessment considered the application of the constraint to ensure that estimates of variable consideration would be included in the transaction price only to the extent the Company had a high degree of confidence that revenue would not be reversed in a subsequent reporting period. The Company will re-evaluate the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as other changes in circumstances occur. For the nine months ended September 30, 2024, the Company recognized revenue of $0.05 million related to the LG Chem Collaboration Agreement. There was no revenue recognized for the three months ended September 30, 2024 related to the LG Chem Collaboration Agreement. For both the three and nine months ended September 30, 2023, the Company recognized revenue of $0.2 million related to the LG Chem Collaboration Agreement. The Company did not record short or long-term research and development liabilities on its balance sheets dated September 30, 2024 and December 31, 2023, as the performance obligation was met and completed. Research and development cost sharing provisions under the agreement expired on March 31, 2022, and thereafter, the Company recognized revenue on intellectual patent filing passthrough costs in the LG Chem Territory.

Collaboration and Option Agreement with Ono

On February 22, 2023, the Company entered into a strategic collaboration agreement (the "Ono Collaboration and Option Agreement") with Ono Pharmaceutical Co., Ltd. ("Ono") to further develop CUE-401 and provide dedicated resources and capabilities to help advance CUE-401 toward the clinic. Under the terms of the Ono Collaboration and Option Agreement, Ono paid the Company an upfront payment and agreed to fully fund all research activities related to CUE-401 through a specified option period. During this option period, the Company will be responsible for the research and development of CUE-401. Upon Ono’s exercise of its option to license CUE-401, the Company will receive an option exercise payment and be eligible for development and commercial milestone payments up to an aggregate of $220.0 million, as well as tiered royalties on sales. Upon any such exercise, Ono will receive worldwide rights to develop and commercialize CUE-401, with the Company retaining a 50% co-development and co-commercialization right in the United States. The Company’s decision to elect the co-development and co-commercialization option may be made within 30 days of Ono’s option exercise to license CUE-401. The amount paid by Ono to the Company for the option exercise and future milestone payments will vary based upon the Company’s decision to exercise the co-development and co-commercialization option.

Under the terms of the Ono Collaboration and Option Agreement, the Company will perform research activities related to CUE-401 through a specified option period of 24 months (the “Research Term”). During this Research Term, the Company will be responsible for the execution of scientific investigation, nonclinical, preclinical, and clinical drug research and development activities designed to progress CUE-401 toward a potential IND and regulatory approval (such activities, collectively referred to as “R&D”). Ono is responsible for the funding of R&D activities performed by the Company. Per the agreement, as consideration for the R&D activities performed by the Company, Ono (i) made a one-time, non-refundable, non-creditable upfront payment of $3.0 million to the Company and (ii) will reimburse the Company for all costs incurred in conducting research, including (a) pass through costs from third party contractors and (b) full time employee salaries capped at $2.1 million in the first 18 months of the Research Term. Subsequently, the Company and Ono agreed to increase this cap for full time employee salaries to $2.8 million. The term of the Ono Collaboration and Option Agreement extends until the expiration of the Research Term which cannot exceed a 24-month period. The Company has forecasted that it will be able to complete the R&D activities within this time period. The Company received the $3.0 million upfront payment in March 2023.

Aside from the $3.0 million upfront payment and funding related to pass through costs, the Company does not believe that any variable consideration should be included in the transaction price as of September 30, 2024. Such assessment considered the application of the constraint to ensure that estimates of variable consideration would be included in the transaction price only to the extent the Company had a high degree of confidence that revenue would not be reversed in a subsequent reporting period. The Company will re-evaluate the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as other changes in circumstances occur. For the three and nine months ended September 30, 2024, the Company recognized revenue of $3.4 million and $7.7 million, respectively, related to the Ono Collaboration and Option Agreement. For the three and nine months ended September 30, 2023, the Company recognized revenue of $1.9 million and $3.4 million, respectively, related to the Ono Collaboration and Option Agreement. The Company recorded short-term research and development liabilities on its balance sheet dated September 30, 2024 of $0.3 million. The Company also reduced its accounts receivable by $0.5 million for amounts billed to Ono in excess of amounts incurred. The Company recorded short-term research and development liabilities on its balance sheet dated December 31, 2023 of $2.1 million.

11.

Commitments and Contingencies

Einstein License Agreement

In 2015, the Company entered into the Einstein License with Einstein for certain patent rights relating to the Company’s core technology platform for the engineering of biologics to control T cell activity, precision, immune-modulatory drug product candidates, and two supporting technologies that enable the discovery of costimulatory signaling molecules (ligands) and T cell targeting peptides. The Company entered into an amended and restated license agreement on July 31, 2017, as amended on October 2018, which modified certain obligations of the parties under the Einstein License. The Einstein License was further amended on January 13, 2024. For the three and nine months ended September 30, 2024, the Company incurred $0.03 million and $0.08 million, respectively, in fees payable to Einstein in relation to this license. For each of the three and nine months ended September 30, 2023, the Company did not incur any fees payable to Einstein in relation to this license.

The Company’s remaining commitments with respect to the Einstein License are based on the attainment of future milestones. The aggregate amount of milestone payments made under the Einstein License may equal up to $1.9 million for each Licensed Product, and up to $1.9 million for each new indication of a Licensed Product. Additionally, the aggregate amount of one-time milestone payments based on cumulative sales of all Licensed Products may equal up to $5.8 million. The Company is also party to a service agreement with Einstein to support the Company’s ongoing research and development activities.

Collaboration Agreement with LG Chem

See discussion of the LG Chem Collaboration Agreement in Note 10.

Collaboration Agreement with Ono

See discussion of the Ono Collaboration and Option Agreement in Note 10.

Contingencies

The Company accrues contingent liabilities to the extent that the liability is probable and estimable. There are no accruals for contingent liabilities in the Company’s condensed consolidated financial statements.

The Company may be subject to various legal proceedings from time to time as part of its business. As of September 30, 2024, the Company was not a party to any legal proceedings or threatened legal proceedings, the adverse outcome of which, individually or in the aggregate, would have a material adverse effect on its business, financial condition or results of operations.

12.

Leases

On March 28, 2022, the Company entered into a License Agreement (the “License”) with MIL 40G, LLC (the “Licensor”), pursuant to which the Company leases approximately 13,000 square feet of office, research and development and laboratory space located at 40 Guest Street, Boston, Massachusetts 02135 (the “Premises”). The Company relocated its corporate headquarters to the Premises in April 2022.

The Company recognized a right of use asset of $9.1 million and an operating lease liability of $9.1 million which were recorded as of the Term Commencement Date (as defined below) related to the License.

The term of the License commenced on April 15, 2022 (the “Term Commencement Date”) and expires on April 14, 2026 (the “Term”). The License has a monthly rental rate of $200,700 for the first year of the Term, $208,728 for the second year of the Term, $217,077 for the third year of the Term and $225,760 for the remainder of the Term. Pursuant to the License, the Company prepaid two months of rent and a security deposit. The Licensor is obligated under the License to provide certain services to the Company, including providing certain gases, chemicals and equipment to the Premises’ laboratory space, IT support, security, office support and health and safety training. The Licensor has the right to terminate the License for Cause (as defined in the License).

On May 3, 2022, the Company entered into the First Amendment to the License ("First Amendment”) with the Licensor, pursuant to which the License was expanded to include an additional room effective July 15, 2022. In consideration of the First Amendment, the security deposit was increased from $225,760 to $235,884 effective July 15, 2022. Upon execution of the First Amendment, the Company prepaid three months of rent, two of which will be held in escrow and credited against future rent payments and the other of which was applied to the first month’s rent. Effective July 15, 2022, the monthly rental rate under the First Amendment increased to $209,700 from $200,700. During the year ended December 31, 2022, the Company recognized a right of use asset of $369,000 and a short and long term operating lease liability of $100,300 and $260,600, respectively, using the weighted average discount rate of 8%, which were recorded as of the Term Commencement Date related to the License.

On May 31, 2022, the Company entered into an operating lease for additional laboratory space at 40 Guest Street, Boston, Massachusetts for the period from December 1, 2022, through December 1, 2024 (the “40G Additional Laboratory Lease”). The 40G Additional Laboratory Lease contains escalating payments during the lease period. The monthly rental rate under the 40G Additional Laboratory Lease is $59,152 for the first 12 months and $61,519 for the remainder of the term. Under the terms of this lease agreement, the Company prepaid three months of rent, two of which are held in escrow and will

be credited against future rent payments and the other of which was applied to the first month’s rent. During the year ended December 31, 2022, the Company recognized a right of use asset of $1,307,000 and a short and long term operating lease liability of $712,000, and $535,000, respectively, using the weighted average discount rate of 10%, which were recorded as of the Term Commencement Date related to the 40G Additional Laboratory Lease.

On September 9, 2022, the Company terminated its lab space lease in Cambridge, Massachusetts with MIL 21E, LLC with an effective termination date of December 6, 2022. The Company performed an analysis of the accounting implications of this termination based on ASC 360 Impairments and Abandonments guidance. During the year ended December 31, 2022, the Company recorded an entry to remove the remaining lease liability and right of use asset of $963,000 and $945,000, respectively. The difference between the carrying amounts of the right of use asset and lease liability of $19,000 was recorded to gain on right of use asset and included in the consolidated statement of operations and comprehensive loss.

For the three and nine months ended September 30, 2024, the Company recorded $0.1 million and $0.3 million, respectively, in interest expense to the lease liability. For the three and nine months ended September 30, 2023, the Company recorded $0.1 million and $0.4 million, respectively, in interest expense to the lease liability.

At September 30, 2024, operating lease right-of-use assets were $4.0 million. Corresponding operating lease liabilities were $4.2 million, of which $2.9 million were recorded in current liabilities, and $1.3 million were recorded in long-term liabilities on the Company’s condensed consolidated balance sheets.

As of September 30, 2024 and December 31, 2023, security deposits of $0.6 million related to the 40G Additional Laboratory Lease were included in deposits on the Company’s consolidated balance sheets.

Future minimum lease payments under these leases at September 30, 2024 are as follows:


	(in thousands)
2024 (remaining 3 months)	$	803
2025		2,799
2026		818
Total lease payments		4,420
Less: imputed interest		(199	)
Present value of lease payments	$	4,221

Rent expense of $0.9 million and $2.6 million was included in the condensed consolidated statements of operations and comprehensive loss, respectively, for the three and nine months ended September 30, 2024. Rent expense of $0.9 million and $2.6 million was included in the condensed consolidated statements of operations and comprehensive loss, respectively, for the three and nine months ended September 30, 2023.

The weighted average remaining lease term and discount rate related to the Company's leases were as follows:



	September 30, 2024			December 31, 2023
Weighted average remaining lease term (years)		1.50			2.16
Weighted average discount rate		5.96	%		6.25	%

13. Subsequent Events

On October 2, 2024 (the “Effective Date”), the Company entered into a second amendment (the “Second Amendment”) to its Loan Agreement, as amended by that certain Waiver and First Amendment to Loan and Security Agreement dated as of April 10, 2023. As of the Effective Date, the Second Amendment removed the requirement for the Company to maintain in accounts of the Company at SVB cash equal to at least $20,000,000. The Second Amendment retains the requirement that the Company have at all times on deposit in accounts of the Company maintained with SVB, unrestricted and unencumbered cash in an amount equal to the lesser of (i) $20,000,000 and (ii) 100% of the dollar value of the Company’s consolidated cash, in the aggregate, at all financial institutions. For further information about the Loan Agreement, please refer to Note 5.

On October 8, 2024, the Company filed a Certificate of Amendment (the “Certificate of Amendment”) to its Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware effecting an amendment to increase the number of authorized shares of the Company’s capital stock from 110,000,000 to 210,000,000 and increase the number of authorized shares of the Company’s common stock from 100,000,000 to 200,000,000. The Certificate of Amendment was approved by the Company’s stockholders at a Special Meeting of Stockholders held on October 8, 2024.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations of Cue Biopharma, Inc. and its subsidiary (“Cue Biopharma”, “we”, “us”, “our” or the “Company”) should be read in conjunction with our financial statements and accompanying notes included in this Quarterly Report on Form 10-Q and the financial statements and accompanying notes thereto for the fiscal year ended December 31, 2023 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission, or SEC, on March 28, 2024, or the 2023 Annual Report.

Overview

We are a clinical-stage biopharmaceutical company developing a novel class of therapeutic biologics to selectively modulate disease-specific T cells directly within the patient’s body. Our vision is to translate nature's signals, or "cues", into clinically active and well tolerated protein therapeutics by generating a new class of T cell engagers for selective modulation of disease specific T cells.

We believe our proprietary Immuno-STAT™ (Selective Targeting and Alteration of T Cells) platform and derivative molecules, as described below, will enable us to enhance the potential of the patient’s own immune system to restore health while avoiding the deleterious side effects of broad immune activation, in the case of cancer, and broad immune suppression, in the case of autoimmune disease. Our selective immune modulation approach may be deployed for treating two of the major diseases causing debilitating human suffering and mortality, namely cancer and autoimmune disease.

Cancer and autoimmune disease are major areas of disease affecting large populations across the globe, shortening the life expectancy of those afflicted, and significantly affecting quality of life. There are approximately 20 million new cancer diagnoses worldwide each year with approximately 2 million in the United States, or U.S., alone. Of these new cases, approximately 50% will progress to recurrent metastatic disease ultimately resulting in death. In addition, approximately 4% of the world’s population is diagnosed with an autoimmune disease resulting in approximately 24 million cases in the U.S. alone. Recognizing that T cells, as the heavy artillery of the immune system, are regulated with a highly selective “command and control” instruction process through interactions with the antigen-presenting cells, we have engineered the Immuno-STAT platform to emulate this “command and control” system.

Specificity, or the "control" in the “command and control” system, is achieved through the T cell receptor, or TCR, binding to a specific, targeted epitope, depicted by the yellow circle in the figure on the right below, along with a “command” co-stimulatory signal, such as interleukin 2, or IL-2, depicted as the purple pentagon in the figure on the right below. These two “cues”, or signals, when engaged concurrently, as is the case with our Immuno-STATs, are able to “dial-in” selective activation of targeted tumor-specific T cells to attack cancer while avoiding potentially harmful broad immune activation of T cells. Conversely, in autoimmunity, our autoimmune drug product candidates are designed to deploy inhibitory signals to selectively dampen autoreactive T cells while avoiding broad immune suppression that can increase susceptibility to other diseases. The figure to the left below depicts the interaction of the antigen presenting cell, or APC, with a specific T-cell as seen in nature.

Immuno-STAT Platform: Emulating Nature’s Selectivity

Our first two oncology drug product candidates, currently in clinical development, CUE-101 and CUE-102, are exemplary programs from the IL-2 based CUE-100 series, and are representative of the HLA-A02 allele, which is the predominant human leukocyte antigen, or HLA, allele in the U.S. and western European territories, i.e., approximately 50% of the patient population, and also prevalent, albeit at lower frequencies, in other global populations. We have preclinically validated the targeting of T cells with additional HLA alleles, which could enable expansion of patient coverage globally for future drug product candidates. CUE-101 is engineered for the treatment of human papillomavirus positive, or HPV+, head and neck squamous cell carcinoma, or HNSCC. By changing the epitope 9-amino acid sequence depicted as the yellow circle in the above illustration, we developed CUE-102, targeting Wilms’ tumor 1 protein, or WT1, an oncofetal antigen known to be over-expressed in more than 20 different cancers. Based upon the clinical observations to date, we believe we have demonstrated that our Immuno-STAT platform can be deployed across a wide spectrum of cancers by selectively activating the patient’s own immune system to combat cancer. Furthermore, we believe that the data generated to date, and continuing to mature, underscores what appears to be a substantial extension of survival, evidenced by the median overall survival, or mOS, of multiple patient cohorts receiving CUE-101 as a monotherapy, as well as in combination with the standard of care for HPV+ HNSCC, which we discuss in greater detail below under the heading “CUE-101”.

We have also developed drug product candidates designed to address a broad spectrum of autoimmune disease by dampening or turning off self-reactive T cells that attack a patient’s body. We have a strategic collaboration with Ono Pharmaceutical Co., Ltd., or Ono, focused on the development of CUE-401 for the potential treatment of a wide spectrum of autoimmune disease through the induction and expansion of regulatory T cells, or Tregs. Furthermore, we have also developed a drug product candidate, CUE-501, for targeting B cell mediated autoimmune diseases, such as systemic lupus erythematosus, which would potentially enable autoreactive B cell ablation followed by natural repopulation thus restoring immune balance.

Our drug product candidates are in various stages of clinical and preclinical development. The ongoing generation of clinical data for CUE-101 and CUE-102, as well as the emerging preclinical data for CUE-401 and CUE-501 continues to bolster our belief that we have developed a modular and versatile approach for “restoring immune balance” representing a potential breakthrough for enhancing clinical outcomes for patients suffering from cancer and autoimmune disease.

Current Programs

Historically, we have focused the majority of our resources on our CUE-101 and CUE-102 programs for oncology, representative of our approach for selective T cell activation against cancer. These programs have demonstrated evidence of selective T cell activation, proliferation and antitumor activity and continue to yield maturing clinical data, for what we believe may be a significant differentiation that supports further development towards potential registration with third-party support. Furthermore, we believe the maturing data has the potential to further validate the CUE-100 series, enabling the Immuno-STAT platform’s modularity and versatility to foster potential development of future drug candidates addressing a broad range of cancers.

As the CUE-101 and CUE-102 programs continue to be monitored and provide maturing data, our primary current emphasis and resource deployment has been focused on our autoimmune disease programs, which we believe represent large market opportunities by addressing significant unmet medical needs. In July 2024, we announced a strategic prioritization of our autoimmune programs along with organizational restructuring to strengthen operational efficiencies and enable the already encouraging clinical data from our oncology programs to continue to mature and potentially further differentiate our competitive advantage, particularly pertaining to patient survival. As we shift our focus towards the development of our autoimmune programs, we continue to actively pursue third party support through partnerships and collaborations to further develop the CUE-100 series programs, including CUE-101 and CUE-102. As such, we have continued to progress forward in our strategic collaboration with Ono to develop CUE-401, a preclinical IL-2/transforming growth factor beta, or TGF -beta, bispecific based drug product candidate for autoimmune disease. Based on its unique mechanism of action, we believe CUE-401 has the potential to be a highly differentiated molecule for the induction and expansion of Tregs in a manner distinct from other IL-2 muteins that are being pursued in this space. In addition, we have advanced CUE-501, which targets autoimmune diseases caused by autoreactive, or self-reactive, B cells, into preclinical development.

Oncology Programs

CUE-101

CUE-101 is our most advanced clinical stage asset and is being investigated for the treatment of HPV+ HNSCC in patients with the HLA allele, HLA-A02. Our Phase 1 clinical trial is investigating CUE-101 in the treatment of HPV+ recurrent metastatic, or HPV+ R/M HNSCC as a monotherapy and in combination with KEYTRUDA. We received Fast Track

Designation of CUE-101 for the treatment of HPV+ R/M HNSCC, as both a monotherapy in second line or higher, or 2L+, patients and in combination with KEYTRUDA, the current standard of care, or SoC, for first line, or 1L, HPV+ R/M HNSCC patients. We also have an ongoing investigator sponsored clinical trial in the neoadjuvant setting where tumor tissue is being analyzed before and after treatment with CUE-101. The preliminary data from pre- and post- CUE-101 treatment biopsies in this study demonstrated changes in the tumor microenvironment that are consistent with CUE-101’s proposed mechanism of action. This series of trials enables CUE-101 to be investigated in multiple patient populations with the objective of developing a deeper understanding of the drug candidate’s activity as well as enhancement of competitive positioning for establishing broad market opportunities.

Both the CUE-101 monotherapy trial in 2L+ HPV+ R/M HNSCC and CUE-101 trial in 1L in combination with KEYTRUDA have completed patient enrollment and have demonstrated evidence of meaningful clinical activity. Most notably in our ongoing Phase 1b trial of CUE-101 in combination with current SoC, KEYTRUDA, as described in more detail in our 2023 Annual Report, we have observed one confirmed complete response and ten confirmed partial responses, as well as seven patients with durable stable disease (greater than 12 weeks) resulting in an objective response rate, or ORR, of 46% and a disease control rate of 75% as of the September 11, 2024 data cut-off date. This ORR represents a greater than doubling of the historical ORR of 19% that was observed with KEYTRUDA alone, as reported in the KEYNOTE 048 study. Importantly, these responses include multiple patients with low PD-L1 expression (combined positive score, or CPS, of less than 20), a patient population known to be less likely to respond to KEYTRUDA. Notably, low CPS has been documented in approximately 50% of all HPV+ R/M HNSCC patients eligible for KEYTRUDA in the 1L setting. Significantly, the observed mOS for all patients with CPS ≥1 treated with CUE-101 and pembrolizumab of 21.8 months, depicted by the blue line in the graph below, compares favorably to the historical mOS of 12.3 months observed with KEYTRUDA alone.

Overall Survival of Patients Treated with 4 mg/kg of CUE-101 in Combination with KEYTRUDA

In addition to the increased ORR observed in low CPS tumors, we have also observed an enhancement in survival in this population. The 12-month OS rates of 83.9% in patients with low CPS and 100% of patients with high CPS compares favorably with the historical rates observed in the KEYNOTE-048 study, as shown in the table below.

Overall Survival of CPS High and Low Patients Treated with 4 mg/kg of CUE-101 in Combination with KEYTRUDA

Data extract:11-Sep-2024

In addition to a significant increase in mOS observed with CUE-101 in combination with KEYTRUDA, we have also observed a mOS of 20.8 months, as depicted by the blue line in the graph below, in the 20 2L+ patients treated with CUE-101 monotherapy at 4 mg/kg as of the September 11, 2024 data cut-off date, which compares favorably to historical third-party mOS data of 8.4 months with KEYTRUDA and 7.5 months with OPDIVO in the 2L setting.

Data extract:11-Sep-2024

We continue to follow the patients treated in both the CUE-101 Phase 1 monotherapy and combination settings and anticipate providing further updates on the maturing data in the first half of 2025.

In January 2024, we met with the Food and Drug Administration, or FDA, in a Type B meeting, which provided clarification and alignment for potential paths forward to registrational trials in both the 2L+ monotherapy and 1L combination settings. In the proposed trial, treatment naïve, front-line patients with HPV+ R/M HNSCC will be randomized to one of three treatment arms: two CUE-101 doses in combination with 200 mg of pembrolizumab or 200mg of pembrolizumab alone, in each case, with dosing to occur every three weeks. ORR will be the primary endpoint with progression free survival, or PFS, and overall survival, or OS, as secondary endpoints. The interim analysis of ORR is anticipated to occur approximately 14 months after the first patient is dosed in this proposed Phase 2 trial, and the primary analysis of ORR is anticipated to occur approximately 22-24 months after the first patient is dosed in this proposed Phase 2 trial.

We believe the data resulting from this Phase 2 trial design will provide a robust characterization of treatment effect, confirm the dose to be tested in Phase 3, and increase the overall probability of success for a potential registrational trial of

CUE-101, while also providing further risk reduction of the CUE-100 series. Due to the resource requirements of the planned Phase 2 trial, combined with our current prioritization of our autoimmune programs, we are in the process of identifying alternative paths to enable the potential initiation and completion of a Phase 2 trial of CUE-101.

CUE-102

CUE-102, the second HLA-A02 drug product candidate in clinical development from our CUE-100 series, targets Wilms' tumor 1 protein, or WT1, an oncofetal antigen known to be over-expressed in more than 20 different cancers, including both solid tumors (such as colorectal, gastric, ovarian, pancreatic and lung) and hematologic malignancies (such as acute myeloid leukemia, multiple myeloma and myelodysplastic syndromes). We are currently conducting a Phase 1 monotherapy clinical trial of CUE-102 in late line R/M WT1+ colorectal, gastric, ovarian, and pancreatic cancer.

In preclinical experiments in HLA-A2 transgenic mice, we observed that treatment with CUE-102 selectively expanded WT1 specific CD8 T cells within five days post dose, while total CD8 T cell frequencies remained unchanged as seen in panel A below. Treatment with CUE-102 in the HLA-A2 transgenic mice also increased the frequency of WT1 specific CD8 T cells expressing the proliferation marker Ki67 over that observed in total CD8 T cells. Differences in the percentage of Ki67 between WT1 specific CD8 T cells and total CD8 T cells are shown pre- and post-dosing of CUE-102 in panel B below.

Preclinical Studies of CUE-102 Demonstrated Selective Activation of WT1 Specific CD8 T Cells

Selective and robust expansion of WT1 specific T cells has been observed in patients treated in our ongoing CUE-102 monotherapy trial. Consistent with preclinical findings, among the 22 patients tested to date, a trend of increased frequency of WT1 specific T cells is apparent post-dosing with CUE-102, while the frequency of all T cells appears to be unchanged. Expansion of these WT1 tumor specific T cells is expected to enhance anti-tumor immunity with the potential to control disease, drive tumor reductions, and enhance patient survival. The graphs below show reductions in tumor burden that have been observed in two patients treated in the dose-escalation portion of the Phase 1 CUE-102 monotherapy clinical trial. As shown in the graph on the left, a patient with gastric cancer that progressed on three prior lines of therapy, including a checkpoint inhibitor, experienced a decrease in the sum of three target lesions of 34% at week 36, as depicted by the blue line crossing the -30% hash line in green. The graph on the right shows a reduction in tumor burden observed in an ovarian cancer patient as depicted by the blue line intersecting the -30% hash line in green. These patients subsequently experienced progressive disease due to the emergence of new lesions, but importantly, we believe to have provided evidence of the antitumor activity of CUE-102 in the dose escalation portion of the study.

Reduction of Target Lesions in Patients Treated with CUE-102

Based on these data, we selected CUE-102 4 mg/kg as the expansion dose for Part B, with patients enrolled in all four indications. Patients in all four indications have been treated at the expansion dose and several remain on treatment or in active follow-up. Recently, a pancreatic cancer patient treated with CUE-102 experienced a 40% reduction of tumor burden as shown in the graph below, resulting in an unconfirmed partial response. This patient is currently scheduled for a follow-up scan.

Pancreatic Cancer Patient

Importantly, we have observed a disease control rate of 41% across all late-stage pancreatic cancer patients in the expansion phase of the trial. In addition, pancreatic cancer patients treated with CUE-102 at 2mg/kg and 4mg/kg exhibited a disease control rate of 67%, with two patients surviving for 11 months or greater as of the data cut-off date of September 11, 2024. These pancreatic cancer patients treated with CUE-102 continue to be followed for survival.

While we are currently strategically prioritizing our autoimmune programs, we plan to continue to follow the patients treated in the CUE-102 Phase 1 monotherapy setting and anticipate providing further updates on the maturing data in the fourth quarter of 2024.

Autoimmune Programs

In addition to the CUE-100 series, we have leveraged the modularity and versatility of the Immuno-STAT platform to develop additional biologic series outside of oncology, including the CUE-400 and CUE-500 series, which are specifically designed through rational protein engineering to address distinct therapeutic approaches for treating autoimmune disease. The CUE-400 series represents a novel class of bispecific molecules designed to selectively induce and expand regulatory T cells, or Tregs, for chronic autoimmune diseases. The CUE-500 series represents a novel approach to develop selective T cell engagers that can selectively redirect specific memory T cells to deplete autoreactive B cells, which is recognized as an

important axis for treatment of autoimmune and inflammatory diseases. We believe preclinical data generated from our evaluation of CUE-401 and the CUE-500 series demonstrates evidence of the desired mechanistic effect of these novel approaches for the treatment of autoimmune disease.

CUE-401

CUE-401 is a bispecific molecule which has the two key signals, IL-2 and TGF beta, for selective induction of Tregs. The structure of CUE-401 incorporates the same IL-2 variant that is present in CUE-101 and CUE-102. The TGF beta variant was designed to improve the safety profile, enhance manufacturability, and mechanistically align with IL-2 signaling for effective Treg induction and expansion. Co-delivery of IL-2 and TGF beta signals in naïve CD4+ T cells results in the induction of FOX P3 which is the master gene transcription factor for Tregs. The panels below demonstrate Treg induction in human peripheral blood mononuclear cells and exemplify the need for both the IL-2 and TGF beta signals to induce Tregs as neither IL-2 nor TGF beta alone can generate substantial numbers of new Tregs. In contrast, CUE-401, which has both IL-2 and TGF beta, demonstrated the ability to generate a robust population of FOX P3+ Tregs by delivering both required signals as shown below in two different preclinical studies.

CUE-401 Harnessed Multiple Signals to Induce Tregs in Preclinical Studies

We have generated preclinical data in our labs and in collaboration with Dr. Richard DiPaolo of St. Louis University supporting the premise that CUE-401 can potentially expand and induce Tregs. The resulting Tregs are functionally suppressive and maintain a stable phenotype, whereby CUE-401 treatment suppressed the proliferation of self-reactive T cells in a mouse model of autoimmune gastritis. The therapeutic potential of CUE-401 has also been observed in a T cell transfer model of autoimmune gastritis, wherein treatment with CUE-401 led to a prolonged suppression of self-reactive T cells and significantly reduced pathological evidence of disease in the stomachs of treated mice. As shown in the figure below, short-term treatment with CUE-401 resulted in long-term protection from autoimmune gastritis and tissue destruction in a preclinical animal model. The representative histopathology, as shown on the left side, and the compiled gastritis scores, as shown on the right side, demonstrated significant protection from tissue destruction in animals treated with CUE-401.

Short-term Treatment with CUE-401 Resulted in Significant Long-Term Protection from Gastritis and Tissue Destruction

CUE-401 is being developed in strategic collaboration with Ono wherein Ono is supporting all of our ongoing preclinical work to identify a lead clinical candidate. We anticipate selecting a clinical candidate and initiating IND-enabling studies for CUE-401 in the first half of 2025.

CUE-500 Series

The CUE-500 series focuses on autoimmune diseases that are mediated by autoreactive or pathogenic immune cells. CUE-500 series Immuno-STATs are designed to selectively harness our existing protective anti-viral T cell repertoire (virus-specific T cells, or VSTs) and re-direct them to target and deplete pathogenic immune cells, such as B cells. We believe that our approach to deploy a biologic to selectively re-direct “killer” T cells, while avoiding the systemic activation of all T cells, will stimulate T cell-mediated B cell depletion with similarities to what has been exemplified with CD19-CAR-T cell therapy approaches in autoimmunity. We believe that addressing this important mechanism of autoimmune diseases with off-the-shelf biologics will offer significant advantages over cell therapy-based approaches, as well as non-selective pan T cell engagers.

The CUE-500 series builds upon the de-risking accomplished with the CUE-100 series and leverages the same molecular scaffold, further supporting the premise that each CUE-100 series Immuno-STAT molecule further de-risks and potentially accelerates subsequent drug product candidates. Our lead CUE-500 series candidate, CUE-501, is a bispecific engineered to selectively redirect existing memory T cells to deplete B cells to address autoimmune and inflammatory diseases. As shown in the left figure below, CUE-501 consists of a bivalent peptide-HLA complex on an Fc backbone, just as utilized in CUE-101 and CUE-102. CUE-501 also contains a single chain variable fragment, or scFv, that binds to the B cell surface antigen CD19 and does not require the presence of the IL-2 variant, due to protective anti-viral T cells being in an activated state. As shown in the graph on the right below, CUE-501 is designed to selectively redirect cytomegalovirus-specific, or CMV-specific, memory T cells to deplete B cells to the same extent achieved with an anti-CD3/CD19 bispecific pan T cell engager. Importantly in this preclinical study, a control CUE-500 molecule that instead targets HIV-specific T cells was unable to mediate B cell killing in this assay, confirming the antigen-specific nature of this mechanism whereby CUE-501 only stimulated a subset of all T cells.

CUE-501 Selectively redirects CMV-specific memory CD8+ T cells to kill human B cells

The selective T cell activation mediated by CUE-501 in preclinical studies is further demonstrated by the graphs below. Pan T cell engagers, such as an anti-CD3/CD19 bispecific, stimulate all T cells and result in significant production of inflammatory cytokines, which leads to the common toxicity of cytokine release syndrome observed in oncology patients treated with these drugs. In contrast, since CUE-501 only activates a subset of all T cells, far lower production of inflammatory cytokines occurs despite the comparable levels of B cell killing shown above. We believe this result supports the potential for CUE-501 to have an improved safety and tolerability profile in patients relative to pan T cell engagers, while also maintaining the benefits of an off-the-shelf biologic relative to the manufacturing challenges and costs associated with cell therapy approaches. We anticipate providing a CUE-501 program update in the fourth quarter of 2024, with lead candidate selection anticipated to occur in the first quarter of 2025. While CUE-501 is being developed to selectively deplete B cells in autoimmune diseases, we believe the modularity of the Immuno-STAT platform also enables the potential generation of additional molecules in the CUE-500 series in the future that could drive selective depletion of other pathogenic immune cell types.

CUE-501 redirects CMV specific memory CD8+ T cells to kill human B cells with reduced cytokine production relative to anti-CD3/CD19 bispecific

Plan of Operation

Our protein engineering platform has generated a series of precision biologic candidates that are in the clinical development phase for oncology and preclinical development phase for autoimmune disease. Due to its modularity and versatility, we believe our platform has the potential for delivering a diverse and expanding pipeline of promising drug product candidates addressing multiple medical indications. We intend to optimize the value and probability of commercialization of

our Immuno-STAT drug product candidates by utilizing a diverse, strategic approach of partnering certain programs, while retaining control and upside potential of others. Through this balanced approach, we aim to provide our stockholders with near, mid and long-term value creation opportunities protected by our portfolio of patents and intellectual property.

Since we are a development-stage company, the majority of our business activities to date have been, and our planned future activities will be, devoted to furthering research and development, as well as business development to foster strategically important alliances for resource enhancement.

A fundamental part of our corporate development strategy is to establish strategic partnerships with leading pharmaceutical or biotechnology organizations that will allow us to more fully exploit the potential of our technology platform in the areas of oncology and autoimmune disease such as our collaborations described below under the headings “Collaboration Agreement with LG Chem" and "Collaboration and Option Agreement with Ono."

Critical Accounting Estimates and Significant Judgments

Our management’s discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States, or U.S. GAAP. The preparation of our financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of our financial statements, and the reported revenue and expenses during the reported periods. We evaluate these estimates and judgments, including those described below, on an ongoing basis. We base our estimates on historical experience, known trends and events, contractual milestones and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are more fully described in Note 2 to our condensed consolidated financial statements appearing elsewhere in this Quarterly Report on Form 10-Q, we believe that the estimates, assumptions and judgments involved in the accounting policies described in Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of our 2023 Annual Report have the greatest potential impact on our financial statements, so we consider those estimates, assumptions and judgments to be our critical accounting policies and estimates. There were no material changes to our critical accounting policies and estimates during the nine months ended September 30, 2024.

Recent Accounting Pronouncements and Adopted Standards

A discussion of recent accounting pronouncements is included in Note 2 to our condensed consolidated financial statements in this Quarterly Report on Form 10-Q.

Significant Contracts and Agreements Related to Research and Development Activities

Einstein License Agreement

On January 14, 2015, we entered into a license agreement, as amended and restated on July 31, 2017, and as amended on October 30, 2018, or the Einstein License, with Albert Einstein College of Medicine, or Einstein, for certain patent rights, or the Patents, relating to our core technology platform for the engineering of biologics to control T cell activity, precision, immune-modulatory drug product candidates, and two supporting technologies that enable the discovery of costimulatory signaling molecules (ligands) and T cell targeting peptides.

We hold an exclusive worldwide license, with the right to sublicense, import, make, have made, use, provide, offer to sell, and sell all products, processes and services that use the Patents, including certain technology received from Einstein related thereto, which we refer to as the Licensed Products. Under the Einstein License, we are required to:

•

Pay royalties and amounts based on a certain percentage of proceeds, as defined in the Einstein License, from sales of Licensed Products and sublicense agreements.

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Pay escalating annual maintenance fees, which are non-refundable, but are creditable against the amount due to Einstein for royalties.

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Make significant payments based upon the achievement of certain milestones, as defined in the Einstein License. As of September 30, 2024, two of these milestones had been achieved, as we had filed an investigational new drug application, or IND, in 2019, and initiated the investigator sponsored Phase 1b neoadjuvant clinical trial for CUE-101 in 2021.

•

Incur minimum product development costs per year and meet certain diligence obligations until the first commercial sale of the first Licensed Product.

As of September 30, 2024, we were in compliance with our obligations under the Einstein License.

The Einstein License expires upon the expiration of the last obligation to make royalty payments to Einstein which may be due with respect to certain Licensed Products, unless terminated earlier under the provisions thereof. The Einstein License includes certain termination provisions that will be triggered if we fail to meet our obligations thereunder.

We account for the costs incurred in connection with the Einstein License in accordance with Accounting Standards Codification, or ASC, 730, Research and Development. For the three and nine months ended September 30, 2024, we incurred $0.03 million and $0.08 million, respectively, in fees payable to Einstein in relation to this license. For the three and nine months ended September 30, 2023, we did not incur any fees payable to Einstein in relation to this license. Such costs are included in research and development costs in our condensed consolidated statements of operations and comprehensive loss.

Pursuant to the Einstein License, we issued to Einstein 671,572 shares of our common stock in connection with the consummation of the initial public offering of our common stock on December 27, 2017.

Collaboration Agreement with LG Chem

Effective November 6, 2018, we entered into a Collaboration, License and Option Agreement, or the LG Chem Collaboration Agreement, with LG Chem Ltd., or LG Chem, related to the development of Immuno-STATs focused in the field of oncology.

Pursuant to the LG Chem Collaboration Agreement, we granted LG Chem an exclusive license to develop, manufacture and commercialize our lead product, CUE-101, as well as Immuno-STATs that target T cells against two additional cancer antigens, or the Drug Product Candidates, in Australia, Japan, Republic of Korea, Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia, China (including Macau and Hong Kong) and Taiwan, which we refer to collectively as the LG Chem Territory. We retain rights to develop and commercialize all assets included in the LG Chem Collaboration Agreement in the United States and in global markets outside of the LG Chem Territory. Under the LG Chem Collaboration Agreement, we will engineer the selected Immuno-STATs for up to three alleles, which are expected to include the predominant alleles in the LG Chem Territory, thereby enhancing our market reach by providing for greater patient coverage of populations in global markets, while LG Chem will establish a chemistry, manufacturing and controls, or CMC, process for the development and commercialization of selected Drug Product Candidates. In addition, LG Chem has the option to select one additional Immuno-STAT for an oncology target, or an Additional Immuno-STAT, for an exclusive worldwide development and commercialization license. On December 18, 2019, we and LG Chem entered into a global license and collaboration agreement, which was amended on November 5, 2020. We refer to such agreement, as amended, as the Global License and Collaboration Agreement. The Global License and Collaboration Agreement supersedes the provisions of the LG Chem Collaboration Agreement related to LG Chem’s option for an Additional Immuno-STAT, which agreement provided for effectiveness if and when LG Chem exercised its option, other than certain select provisions including the length of the option period and representations, warranties and covenants of the parties. On April 30, 2021, LG Chem’s option pursuant to the Global License and Collaboration Agreement expired.

Under the terms of the LG Chem Collaboration Agreement, LG Chem paid us a $5.0 million non-refundable, non-creditable upfront payment and purchased $5.0 million of shares of our common stock at a price per share equal to a 20% premium to the volume weighted-average closing price per share over the 30 trading day period immediately prior to the effective date of the LG Chem Collaboration Agreement. We are also eligible to receive additional aggregate payments of up to $400 million if certain research, development, regulatory and commercial milestones are successfully achieved. On May 16,

2019, we earned a $2.5 million milestone payment for the FDA’s acceptance of the IND for our lead drug product candidate, CUE-101, pursuant to the LG Chem Collaboration Agreement. On December 7, 2020, we earned a $1.25 million milestone payment on the selection of a preclinical candidate pursuant to the LG Chem Collaboration Agreement. On November 23, 2021, we earned a $3.0 million milestone payment for the selection of a Drug Product Candidate. In addition, the LG Chem Collaboration Agreement also provides that LG Chem will pay us tiered single-digit royalties on net sales of commercialized Drug Product Candidates, or Collaboration Products, in the LG Chem Territory on a product-by-product and country-by-country basis, until the later of expiration of patent rights in a country, the expiration of regulatory exclusivity in such country, or ten years after the first commercial sale of a Collaboration Product in such country, subject to certain royalty step-down provisions set forth in the LG Chem Collaboration Agreement.

Pursuant to the LG Chem Collaboration Agreement, the parties will share research costs related to Collaboration Products, and LG Chem will provide CMC process development for selected Drug Product Candidates and potentially additional downstream manufacturing capabilities, including clinical and commercial supply for Collaboration Products. In return for performing CMC process development, LG Chem is eligible to receive low-single digit percentage royalty payments on the sales of Collaboration Products sold in all countries outside the LG Chem Territory. For the nine months ended September 30, 2024, we recognized revenue of $0.05 million related to the LG Chem Collaboration Agreement. There was no revenue recognized for the three months ended September 30, 2024 related to the LG Chem Collaboration Agreement. For both the three and nine months ended September 30, 2023 we recognized revenue of $0.2 million. As of September 30, 2024, we had recorded $19.9 million in collaboration revenue related to this agreement since the agreement was entered into. The majority of the research phase of the LG Chem Collaboration Agreement was substantially completed by March 31, 2022.

The LG Chem Collaboration Agreement includes various representations, warranties, covenants, indemnities and other customary provisions. LG Chem may terminate the LG Chem Collaboration Agreement for convenience or change of control of us on a program-by-program, product-by-product or country-by-country basis, or in its entirety, at any time following the notice period set forth in the LG Chem Collaboration Agreement. Either party may terminate the LG Chem Collaboration Agreement, in its entirety or on a program-by-program, product-by-product or country-by-country basis, in the event of an uncured material breach. The LG Chem Collaboration Agreement is also terminable by either party (i) upon the bankruptcy, insolvency or liquidation of the other party or (ii) for certain activities involving the challenge of certain patents controlled by the other party. Unless earlier terminated, the LG Chem Collaboration Agreement will expire on a product-by-product and country-by-country basis upon the expiration of the applicable royalty term.

To date, LG Chem has selected one additional cancer antigen, WT1, which is the focus of the CUE-102 research program. We are currently developing two Collaboration Products with LG Chem pursuant to this agreement.

Collaboration and Option Agreement with Ono

On February 22, 2023, we entered into a strategic collaboration agreement, or the Ono Collaboration and Option Agreement, with Ono Pharmaceutical Co., Ltd., or Ono, to further develop CUE-401 and provide dedicated resources and capabilities to help advance CUE-401 toward the clinic. Under the terms of the Ono Collaboration and Option Agreement, Ono paid us an upfront payment and agreed to fully fund all research activities related to CUE-401 through a specified option period. During this option period, we will be responsible for the research and development of CUE-401. Upon Ono’s exercise of its option to license CUE-401, we will receive an option exercise payment and be eligible for development and commercial milestone payments up to an aggregate of $220 million, as well as tiered royalties on sales. Upon any such exercise, Ono will receive worldwide rights to develop and commercialize CUE-401, with us retaining a 50% co-development and co-commercialization right in the United States. Our decision to elect the co-development and co-commercialization option may be made within 30 days of Ono’s option exercise to license CUE-401. The amount paid by Ono to us for the option exercise and future milestone payments will vary based upon our decision to exercise the co-development and co-commercialization option.

Under the terms of the Ono Collaboration and Option Agreement, we will perform research activities related to CUE-401 through a specified option period of 24 months, or the Research Term. During this Research Term, we will be responsible for the execution of scientific investigation, nonclinical, preclinical, and clinical drug research and development activities designed to progress CUE-401 toward a potential IND and regulatory approval, collectively referred to as R&D. Ono is responsible for the funding of R&D activities performed by us. Per the Ono Collaboration and Option Agreement, as consideration for the R&D activities performed by us, Ono (i) has made a one-time, non-refundable, non-creditable upfront payment of $3.0 million to us in March 2023, and (ii) will reimburse us for all costs incurred in conducting research, including (a) pass through costs from third party contractors and (b) full time employee salaries capped at $2.1 million in the first 18 months of the Research

Term. Subsequently, the Company and Ono agreed to increase this cap for full time employee salaries to $2.8 million. The term of the Ono Collaboration and Option Agreement extends until the expiration of the Research Term which cannot exceed a 24-month period. We have forecasted that we will be able to complete the R&D activities within this time period.

Aside from the $3.0 million upfront payment and funding related to pass through costs, we do not believe that any variable consideration should be included in the transaction price as of September 30, 2024. Such assessment considered the application of the constraint to ensure that estimates of variable consideration would be included in the transaction price only to the extent we have a high degree of confidence that revenue would not be reversed in a subsequent reporting period. We will re-evaluate the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as other changes in circumstances occur. For the three months ended September 30, 2024 and 2023, we recognized revenue of $3.4 million and $1.9 million, respectively, related to the Ono Collaboration and Option Agreement. For the nine months ended September 30, 2024 and 2023, we recognized revenue of $7.7 million and $3.4 million, respectively, related to the Ono Collaboration and Option Agreement. We recorded short-term research and development liabilities on our balance sheet dated September 30, 2024 of $0.3 million. We also reduced our accounts receivable by $0.5 million for amounts billed to Ono in excess of amounts incurred. As of December 31, 2023, we recorded short-term research and development liabilities of $2.1 million on our consolidated balance sheet.

Components of Results of Operations

Collaboration Revenue

We have not yet generated commercial revenue from product sales. To date, we have generated revenue from collaboration agreements with Merck Sharp & Dohme Corp. (which terminated in December 2022), LG Chem, and Ono. Collaboration revenue may vary from period to period depending on the progress of our work in connection with our collaboration agreements.

Operating Expenses

We generally recognize operating expenses as they are incurred in two general categories, general and administrative expenses and research and development expenses. Our operating expenses also include non-cash components related to depreciation and amortization of property and equipment and stock-based compensation, which are allocated, as appropriate, to general and administrative expenses and research and development expenses.

General and administrative expenses consist of salaries and related expenses for executive, legal, finance, human resources, information technology and administrative personnel, as well as professional fees, insurance costs, and other general corporate expenses. We expect general and administrative expenses to remain consistent in future periods as we continue to incur expenses related to our operation as a public company which requires our compliance with certain regulatory and legal procedures.

Research and development expenses consist primarily of compensation expenses, fees paid to consultants, outside service providers and organizations (including research institutes at universities), facility expenses, and development and clinical trial expenses with respect to our drug product candidates. We charge research and development expenses to operations as they are incurred. We expect that our research and development expenses will remain consistent in future periods based on our strategic re-prioritization of our autoimmune programs and organizational restructuring which was announced in July 2024.

Interest Income

We earn interest income from cash invested in money market funds.

Results of Operations

Three and Nine Months Ended September 30, 2024 and 2023

Our condensed consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2024 and 2023, as discussed herein, are presented below in thousands.


	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
Collaboration revenue	$	3,336		$	2,100		$	7,711		$	3,669
Operating expenses:
General and administrative		2,867			3,645			10,564			12,071
Research and development		9,381			9,874			29,111			29,915
Gain on fixed asset disposal		(97	)		—			(97	)		—
Total operating expenses		12,151			13,519			39,578			41,986
Loss from operations		(8,815	)		(11,419	)		(31,867	)		(38,317	)
Other income (expense):
Interest income		343			700			1,332			1,756
Interest expense		(188	)		(286	)		(643	)		(738	)
Total other income, net		155			414			689			1,018
Net loss	$	(8,660	)	$	(11,005	)	$	(31,178	)	$	(37,299	)

Collaboration Revenue

Collaboration revenue increased by $1.2 million to $3.3 million for the three months ended September 30, 2024, from $2.1 million for the three months ended September 30, 2023. The increase was due to revenue earned from the Ono Collaboration and Option Agreement, which was executed in February 2023.

Collaboration revenue increased by $4.0 million to $7.7 million for the nine months ended September 30, 2024, from $3.7 million for the nine months ended September 30, 2023. The increase was due to revenue earned from the Ono Collaboration and Option Agreement, which was executed in February 2023.

General and Administrative Expenses

General and administrative expenses decreased by $0.7 million to $2.9 million for the three months ended September 30, 2024, from $3.6 million for the three months ended September 30, 2023. The decrease was primarily due to a decrease in employee compensation, which includes stock-based compensation.

General and administrative expenses decreased by $1.5 million to $10.6 million for the nine months ended September 30, 2024, from $12.1 million for the nine months ended September 30, 2023. The decrease was primarily due to a decrease in employee compensation, which includes stock-based compensation.

Research and Development Expenses

Research and development expenses decreased by $0.5 million to $9.4 million for the three months ended September 30, 2024, from $9.9 million for the three months ended September 30, 2023. The decrease was primarily due to lower clinical trial costs, and employee compensation, which includes stock-based compensation, partially offset by an increase in drug substance manufacturing costs related to CUE-401.

Research and development expenses decreased by $0.8 million to $29.1 million for the nine months ended September 30, 2024, from $29.9 million for the nine months ended September 30, 2023. The decrease was primarily due to lower clinical trial costs, and employee compensation, which includes stock-based compensation, partially offset by an increase in professional outside services related to CUE-401.

Gain on Fixed Asset Disposal

Gain on fixed asset disposal was $0.1 million for the three and nine months ended September 30, 2024 . This gain was related to the sale of lab equipment.

Interest Income

Interest income decreased by $0.4 million to $0.3 million for the three months ended September 30, 2024, from $0.7 million for the three months ended September 30, 2023. The decrease was due to lower interest earned on cash and cash equivalents.

Interest income decreased by $0.5 million to $1.3 million for the nine months ended September 30, 2024, from $1.8 million for the nine months ended September 30, 2023. The decrease was due to lower interest earned on cash and cash equivalents.

Interest Expense

Interest expense decreased by $0.1 million to $0.2 million for the three months ended September 30, 2024, from $0.3 million for the three months ended September 30, 2023. The decrease was due to a decrease in interest related to the proceeds from borrowings under our Loan and Security Agreement, as amended, or the Loan Agreement, with Silicon Valley Bank, a division of First-Citizens Bank & Trust Company.

Interest expense decreased by $0.1 million to $0.6 million for the nine months ended September 30, 2024, from $0.7 million for the nine months ended September 30, 2023. The decrease was due to a decrease in interest related to the proceeds from borrowings under the Loan Agreement with Silicon Valley Bank, a division of First-Citizens Bank & Trust Company.

Liquidity and Capital Resources

We have financed our working capital requirements primarily through private and public offerings of equity securities, cash received from Merck Sharp & Dohme Corp., LG Chem, and Ono under the respective collaboration agreements and borrowings under the Loan Agreement. At September 30, 2024, we had cash and cash equivalents totaling $32.4 million available to fund our ongoing business activities. Additional information concerning our financial condition and results of operations is provided in the financial statements included in this Quarterly Report on Form 10-Q.

The amounts that we actually spend for any specific purpose may vary significantly and will depend on a number of factors, including, but not limited to, our research and development activities and programs, clinical testing, regulatory approval, market conditions, and changes in or revisions to our business strategy and technology development plans.

On May 9, 2023, we filed a registration statement on Form S-3, which was declared effective on May 26, 2023 (File No. 333-271786), to register for sale from time to time up to $300 million of our common stock, preferred stock, debt securities, warrants, subscription rights and/or units in one or more offerings.

In October 2021, we entered into an open market sale agreement, or the October 2021 ATM Agreement, with Jefferies LLC, or Jefferies, as agent, to sell shares of our common stock for aggregate gross proceeds of up to $80 million, from time to time, through an at-the-market equity offering program. The October 2021 ATM Agreement will terminate upon the earliest of (a) the sale of $80 million of shares of our common stock pursuant to the October 2021 ATM Agreement or (b) the termination of the October 2021 ATM Agreement by us or Jefferies. We did not sell any shares during the three months ended September 30, 2024 under the October 2021 ATM Agreement. During the three months ended September 30, 2023, we sold 1,378,867 shares of common stock under the October 2021 ATM Agreement, for proceeds of $5.6 million, net of commission paid, but excluding transaction expenses. During the nine months ended September 30, 2024 and September 30, 2023, we sold 1,428,200 and 1,915,131 shares, respectively, of common stock under the October 2021 ATM Agreement, for proceeds of $3.4 million and $7.6 million, respectively, net of commission paid, but excluding transaction expenses. As of September 30, 2024, we sold an aggregate of 9,028,573 shares of common stock under the October 2021 ATM Agreement for proceeds of $40.4 million, net of commission paid, but excluding transaction expenses, since its inception.

On February 15, 2022, we entered into the Loan Agreement, pursuant to which we have borrowed $10.0 million. The Loan Agreement was amended in April 2023 and October 2024. The term loans under the Loan Agreement, or the Term Loans, bear interest at a floating rate per annum equal to the greater of (A) the prime rate (as published in the money rates section of The Wall Street Journal) plus 2.25% and (B) 5.50%. On the first calendar day of each month, we will be required to

make monthly interest payments and commencing on June 30, 2023, we began repayment of the Term Loans in (i) 30 consecutive installments of principal plus monthly payments of accrued interest if the additional term loans are not advanced and (ii) 24 months if the additional term loans are advanced. All outstanding principal and accrued and unpaid interest under the Term Loans and all other outstanding obligations with respect to the Term Loans are due and payable in full on December 1, 2025.

The Loan Agreement permits voluntary prepayment of all, but not less than all, of the Term Loans, subject to a prepayment premium except if the facility is refinanced with another First Citizens Bank facility. Such prepayment premium would be 1.00% of the principal amount of the Term Loans. Upon prepayment or repayment in full of the Term Loans, we will be required to pay a one-time final payment fee equal to 5.00% of the original principal amount of any funded Term Loans being repaid. The Loan Agreement, as amended, also requires us to have at all times on deposit in our accounts maintained with SVB, unrestricted and unencumbered cash in an amount equal to the lesser of (i) 100% of the dollar value of our consolidated cash, in the aggregate, at all financial institutions and (ii) $20,000,000.

On March 10, 2023, Silicon Valley Bank, or SVB, was closed and the Federal Deposit Insurance Company, or FDIC, was appointed receiver for the bank. The FDIC created a successor bridge bank, and all deposits of SVB were transferred to the bridge bank under a systemic risk exception approved by the U.S. Department of the Treasury, the Federal Reserve and the FDIC. On March 27, 2023, First Citizens Bank assumed all of SVB’s deposits and certain other liabilities and acquired substantially all of SVB’s loans and certain other assets from the FDIC. First Citizens Bank continues to hold our Term Loans under the same existing terms and covenants which were in place with SVB.

On November 14, 2022, we entered into securities purchase agreements with accredited investors pursuant to which, on November 16, 2022, we issued and sold to such investors in a private placement an aggregate of 7,656,966 shares of common stock and, in lieu of shares of common stock to certain investors, pre-funded warrants, or the 2022 Pre-Funded Warrants, to purchase an aggregate of 1,531,440 shares of common stock, and, in each case, accompanying warrants, or the 2022 Common Stock Warrants, to purchase an aggregate of up to 9,188,406 additional shares of common stock (or 2022 Pre-Funded Warrants in lieu thereof) at a price of $3.265 per share and accompanying 2022 Common Stock Warrant (or $3.2649 per 2022 Pre-Funded Warrant and accompanying 2022 Common Stock Warrant), or the PIPE Financing. The exercise price of the 2022 Common Stock Warrants is $3.93 per share, or if exercised for a 2022 Pre-Funded Warrant in lieu thereof, $3.9299 per 2022 Pre-Funded Warrant. The 2022 Common Stock Warrants are exercisable at any time after they are issued and ending on the fifth anniversary of the closing. The 2022 Pre-Funded Warrants are exercisable at any time after they are issued and will not expire. We received aggregate gross proceeds from the PIPE Financing of $30 million, before deducting placement agent fees and offering expenses of $2.6 million. Piper Sandler & Co. acted as lead placement agent and Public Ventures LLC acted as co-placement agent for the PIPE Financing.

On September 26, 2024, we entered into an underwriting agreement, or the Underwriting Agreement, with Oppenheimer & Co. Inc., as representative of the several underwriters named therein, or, collectively, the Underwriters, relating to an underwritten public offering of (i) 11,564,401 shares, or the Shares, of our common stock, $0.001 par value per share, and accompanying common stock warrants (“Common Stock Warrants”) to purchase 2,891,100 shares of our common stock, and (ii) to certain investors in lieu of common stock, pre-funded warrants, or the Pre-Funded Warrants, to purchase 12,435,599 shares of our common stock and accompanying Common Stock Warrants to purchase 3,108,900 shares of common stock. All of the Shares, the Pre-Funded Warrants and the Common Stock Warrants were sold by us. Each Share was offered and sold together with an accompanying Common Stock Warrant at a combined offering price of $0.50, and each Pre-Funded Warrant was offered and sold together with an accompanying Common Stock Warrant at a combined offering price of $0.499, which is equal to the combined offering price per share of common stock and accompanying Common Stock Warrant less the $0.001 exercise price of each Pre-Funded Warrant. The Underwriters purchased (i) each Share and accompanying Common Stock Warrant from us pursuant to the Underwriting Agreement at a combined price of $0.47 and (ii) each Pre-Funded Warrant and accompanying Common Stock Warrant from us pursuant to the Underwriting Agreement at a combined price of $0.46906. We recorded net proceeds from the offering of $10.8 million, after deducting underwriting discounts and commissions and offering expenses of $1.1 million, and excluding any proceeds that may be received from exercise of the Common Stock Warrants and the Pre-Funded Warrants.

If we issue additional equity securities to raise funds, the ownership percentage of our existing stockholders would be reduced. New investors may demand rights, preferences or privileges senior to those of existing holders of our common stock. If we issue debt securities, we may be required to grant security interests in our assets, could have substantial debt service obligations, and lenders may have a senior position (compared to stockholders) in any potential future bankruptcy or liquidation. Additionally, corporate collaboration and licensing arrangements may require us to incur non-recurring and other charges, give up certain rights relating to our intellectual property and research and development activities, increase our near

and long-term expenditures, issue securities that dilute our existing stockholders, issue debt which may require liens on our assets and which will increase our monthly expense obligations, or disrupt our management and business.

Cash Flows

Based on our current plans and forecasted expenses, we believe that our existing cash and cash equivalents, as of September 30, 2024, will enable us to fund our operations into the fourth quarter of 2025. However, we will need to raise additional capital to fund our future operations and remain as a going concern. We expect to finance our future cash needs through a combination of equity offerings, collaborations, and other strategic alliances. Volatility in capital markets and general economic conditions in the United States may be a significant obstacle to raising the required funds and, as a result, we may be unable to secure the necessary funding on acceptable terms. This raises substantial doubt about our ability to continue as a going concern.

The following table summarizes our changes in cash, cash equivalents, and restricted cash for the nine months ended September 30, 2024 and 2023:


	Nine Months Ended
	September 30,
	2024			2023
	(in thousands)
Net cash provided by (used in):
Operating activities	$	(27,301	)	$	(29,003	)
Investing activities		33			25,002
Financing activities		11,175			7,078
Net change in cash, cash equivalents, and restricted cash	$	(16,093	)	$	3,077

Operating Activities

Net cash used in operating activities totaled $27.3 million for the nine months ended September 30, 2024 compared to $29.0 million for the nine months ended September 30, 2023. The decrease of $1.7 million was primarily due to a decrease in research and development contract liabilities and accrued expenses, partially offset by increases in accounts payable.

Investing Activities

Net cash provided by investing activities totaled less than $0.03 million for the nine months ended September 30, 2024 compared to net cash provided by investing activities of $25.0 million during the nine months ended September 30, 2023. The decrease of $25.0 million in cash provided was due to redemptions of marketable securities during the nine months ended September 30, 2023.

Financing Activities

Net cash provided by financing activities totaled $11.2 million for the nine months ended September 30, 2024 compared to $7.1 million for the nine months ended September 30, 2023. The increase of $4.1 million was due to net proceeds received from our September 2024 offering.

Funding Requirements

We expect our expenses to increase in connection with our ongoing activities, particularly as we continue the research and development of our Immuno-STAT platform and continue ongoing and initiate new clinical trials of, and seek marketing approval for, our drug product candidates. In addition, we expect to incur additional costs associated with operating as a public company. Our expenses will also increase if, and as, we:

•

continue the clinical development of our CUE-100 series, including CUE-101 and CUE-102, which we have currently decided to deprioritize;

•

continue the preclinical development of CUE-401 and CUE-501;

•

leverage our programs, including our autoimmune programs, to advance our other drug product candidates into preclinical and clinical development;

•

seek regulatory approvals for any drug product candidates for which we successfully complete clinical trials;

•

seek to discover and develop additional drug product candidates;

•

establish a sales, marketing, medical affairs and distribution infrastructure to commercialize any drug product candidates for which we may obtain marketing approval and intend to commercialize on our own or jointly;

•

hire additional clinical, quality control and scientific personnel;

•

expand our manufacturing, quality, operational, financial and management systems;

•

increase personnel, including personnel to support our clinical development, manufacturing and commercialization efforts and our operations as a public company;

•

maintain, expand and protect our intellectual property portfolio;

•

acquire or in-license other drug product candidates and technologies; and

•

incur additional legal, accounting and other expenses in operating as a public company.

In July 2024, we determined to strategically prioritize our autoimmune programs, including CUE-401 and CUE-501, and completed an organizational restructuring to strengthen operational efficiencies, including an approximate 25% reduction in our workforce.

We discussed in Note 1 of the notes to the condensed consolidated financial statements under Accounting Standards Update, or ASU, 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40), or, ASC 205-40, we have the responsibility to evaluate whether conditions or events raise substantial doubt about our ability to meet our future financial obligations as they become due within one year after the date the financial statements are issued. Under ASC 205-40, this evaluation initially cannot take into consideration the potential mitigating effects of plans that have not been fully implemented as of the date the financial statements are issued. Since we currently believe that our existing cash and cash equivalents, as of September 30, 2024, and our current operating plan will enable us to fund our operations into the fourth quarter of 2025, we have determined that this cash runway of less than 12 months from the date of issuance of our financial statements included in this Quarterly Report on Form 10-Q, along with our accumulated deficit, history of losses, and future expected losses meet the ASC 205-40 standard for raising substantial doubt about our ability to continue as a going concern within one year of the issuance date of our financial statements included in this Quarterly Report on Form 10-Q. While we have plans in place to mitigate this risk, which primarily consist of raising additional capital through a combination of equity offerings, collaborations, and other strategic alliances, and, depending on the availability and level of additional financings, cash expenditure reduction, there is no guarantee that we will be successful in these mitigation efforts.

We will need to raise additional capital or incur additional indebtedness to continue to fund our operations in the future. Our ability to raise additional funds will depend on financial, economic and market conditions, many of which are outside of our control, and we may be unable to raise financing when needed, or on terms favorable to us. If we are unable to raise additional funds when needed, we may be required to delay, reduce or eliminate our product development or future commercialization efforts, or grant rights to develop and market drug product candidates that we would otherwise prefer to develop and market ourselves, which could adversely affect our business prospects, and we may be unable to continue our operations. Because of numerous risks and uncertainties associated with the research, development and commercialization of our drug product candidates, we are unable to estimate the exact amount of our working capital requirements. Factors that may affect our planned future capital requirements and accelerate our need for additional working capital include the following:

•

the progress, timing, scope and costs of our clinical trials, including the ability to timely enroll patients in our ongoing, planned and potential future clinical trials;

•

our ability to secure third party support through partnerships and collaborations to further develop the CUE-100 series programs, including CUE-101 and CUE-102;

•

the outcome, timing and cost of regulatory approvals by the FDA and other comparable regulatory authorities, including the potential that the FDA or other comparable regulatory authorities may require that we perform more studies than those that we currently expect;

•

the number and characteristics of drug product candidates that we may in-license and develop;

•

our ability to successfully commercialize our drug product candidates, if approved;

•

the amount of sales and other revenues from drug product candidates that we may commercialize, if any, including the selling prices for such potential products and the availability of adequate third-party reimbursement;

•

selling and marketing costs associated with our potential products, including the cost and timing of expanding our marketing and sales capabilities;

•

the terms and timing of any potential future collaborations, licensing or other arrangements that we may establish;

•

cash requirements of any future acquisitions and/or the development of other drug product candidates;

•

the costs of operating as a public company;

•

the cost and timing of completion of commercial-scale, outsourced manufacturing activities;

•

the time and cost necessary to respond to technological and market developments;

•

any disputes which may occur between us and our employees, collaborators, including Einstein, LG Chem and Ono, or other prospective business partners; and

•

the costs of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights.

A change in the outcome of any of these or other variables with respect to the development of any of our drug product candidates could significantly change the costs and timing associated with the development of that drug product candidate. Further, our operating plans may change in the future, and we may need additional funds to meet operational needs and capital requirements associated with such operating plans.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of public or private equity offerings, debt financings, collaborations, strategic partnerships or marketing, distribution or licensing arrangements with third parties and grants from organizations and foundations. If we raise additional funds by selling shares of our common stock or other equity-linked securities, the ownership interest of our current stockholders will be diluted. We may seek to access the public or private capital markets whenever conditions are favorable, even if we do not have an immediate need for additional capital at that time. If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams or drug product candidates or to grant licenses on terms that may not be acceptable to us. If we raise additional funds through debt financing, we may have to grant a security interest on our assets to the future lenders, our debt service costs may be substantial, and the lenders may have a preferential position in connection with any future bankruptcy or liquidation.

If we are unable to raise additional capital when needed, we may be required to curtail the development of our technology or materially curtail or reduce our operations. We could be forced to sell or dispose of our rights or assets. Any inability to raise adequate funds on commercially reasonable terms could have a material adverse effect on our business, results of operation and financial condition, including the possibility that a lack of funds could cause our business to fail, dissolve and liquidate with little or no return to investors.

Principal Commitments

During the three and nine months ended September 30, 2024, there were no material changes to our contractual obligations and commitments as of December 31, 2023 as described in Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of our 2023 Annual Report.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a smaller reporting company, we are not required to provide the information required by this Item 3.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We are responsible for maintaining disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, or the Exchange Act. Disclosure controls and procedures are controls and other procedures designed to ensure that the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Based on our management’s evaluation (with the participation of our principal executive officer and our principal financial officer) of our disclosure controls and procedures as required by Rule 13a-15 under the Exchange Act, our principal executive officer and our principal financial officer have concluded that our disclosure controls and procedures were effective as of September 30, 2024, the end of the period covered by this report.

Inherent Limitations on Effectiveness of Controls

Our management, including our principal executive officer and our principal financial officer, do not expect that our disclosure controls or our internal control over financial reporting will prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of a simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of any evaluation of control effectiveness to future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the three months ended September 30, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are not currently a party to any material legal proceedings.

ITEM 1A. RISK FACTORS

We operate in a rapidly changing environment that involves a number of risks that could materially affect our business, financial condition or future results, some of which are beyond our control. The occurrence of any of these risks could harm our business, financial condition, results of operations and/or growth prospects or cause our actual results to differ materially from those contained in forward-looking statements we have made in this report and those we may make from time to time. In evaluating us and our business, you should carefully consider the following risks, the information included in this Quarterly Report on Form 10-Q and in other documents we file with the SEC and the risk factors previously disclosed in “Part I, Item 1A. Risk Factors” of our 2023 Annual Report.

If we fail to comply with the continued listing requirements of Nasdaq, our common stock may be delisted and the price of our common stock and our ability to access the capital markets could be negatively impacted.

We are required to comply with the continued listing requirements of the Nasdaq Stock Market LLC, or Nasdaq, including, among other things, maintaining a minimum closing bid price of at least $1.00 per share, or shares of our common stock may be subject to delisting, which would have a material adverse effect on our business. Any potential delisting of our common stock could have a material adverse effect on the market for, and liquidity and price of, our common stock and would adversely affect our ability to raise capital on terms acceptable to us, or at all. Delisting from Nasdaq could also have other negative results, including, without limitation, the potential loss of confidence by investors, customers and employees and fewer business development opportunities. Any delisting of our common stock from Nasdaq would also make it more difficult for our stockholders to sell their shares of our common stock in the public market.

On August 15, 2024, we received a deficiency letter from Nasdaq indicating that we failed to comply with the minimum bid price requirement. Subsequently, on October 18, 2024, we received a letter from Nasdaq notifying us that we had regained compliance with the minimum bid price requirement and were in compliance with the listing requirements. Our common stock will continue to be listed and traded on the Nasdaq Capital Market. However, there can be no assurance that we will be able to continue to comply with the Nasdaq listing requirements.

We have a loan agreement that requires us to meet certain operating covenants and place restrictions on our operating and financial flexibility.

On February 15, 2022, we entered into the Loan Agreement with SVB, as amended in April 2023, which has been assumed by First Citizens Bank, pursuant to which we have borrowed $10.0 million. The outstanding principal amount under the Loan Agreement as of September 30, 2024 is $5.0 million. The Loan Agreement is secured by substantially all of our properties, rights and assets, except for our intellectual property, which is subject to a negative pledge, and certain other customary exclusions. Because of the security interest, First Citizens Bank’s rights to repayment from a liquidation of the assets subject to that security interest would be senior to the rights of other creditors.

The Loan Agreement, as amended, includes customary covenants including covenants requiring us to maintain our corporate existence and governmental approvals, deliver certain financial reports and maintain insurance coverage. As of September 30, 2024, we had unrestricted and unencumbered cash and cash equivalents totaling $32.4 million. Additionally, we are restricted in our ability to transfer collateral, incur additional indebtedness, engage in mergers or acquisitions, pay dividends or make other distributions, make investments, create liens, sell assets and agree to a change in control. Upon the occurrence of an event of default, which includes our failure to satisfy our payment obligations under the Loan Agreement, the breach of certain of these covenants under the Loan Agreement such as the covenant to maintain unrestricted and unencumbered cash in an amount equal to the lesser of (i) $20,000,000 and (ii) 100% of the dollar value of our consolidated cash, or the occurrence of a material adverse change in our business, First Citizens Bank is entitled to accelerate amounts due under the Loan Agreement and dispose the collateral as permitted under applicable law. Any declaration by First Citizens Bank of an event of default and its exercise of its remedies in the event of such declaration of an event of default, such as acceleration of the amounts due under the Loan Agreement, would adversely impact the amount of cash we have available to fund our operations, could significantly harm our business and prospects, and could cause the price of our common stock to decline.

For a further description of the Loan Agreement, please refer to Notes 5 and 13 of the Notes to Condensed Consolidated Financial Statements included in this Quarterly Report on Form 10-Q.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

(a) Resignation of Officer

On November 10, 2024, Anish Suri, Ph.D., notified us of his decision to resign as President and Chief Scientific Officer of the Company, effective as of November 25, 2024, or the Effective Date. On November 14, 2024, we entered into a consulting agreement with Dr. Suri, or the Consulting Agreement, pursuant to which, following the Effective Date, Dr. Suri will assist with the transition of his duties and provide other consulting and advisory services as specified in the Consulting Agreement. We extend our sincere thanks to Dr. Suri for his years of service and for his willingness to continue to assist the Company to ensure a smooth transition.

None of our directors or officers adopted or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K) during the quarterly period covered by this report.

ITEM 6. EXHIBITS


		Incorporated by Reference
Exhibit Number	Exhibit Description	Filed Herewith	Form	Exhibit	Filing Date	Registration/File No.
3.1	Amended and Restated Certificate of Incorporation, as amended	X
4.1	Form of Pre-Funded Warrant to Purchase Common Stock		8-K	4.1	9/27/2024	001-38327
4.2	Form of Warrant to Purchase Common Stock		8-K	4.2	9/27/2024	001-38327
10.1	Second Amendment to Loan and Security Agreement, dated October 2, 2024, by and between Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, and Cue Biopharma, Inc.		8-K	10.1	10/4/2024	001-38327
10.2	Director Compensation Policy effective June 5, 2024	X
31.1	Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934	X
31.2	Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934	X
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	X
101.INS	Inline eXtensible Business Reporting Language (XBRL) Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.	X
101.SCH	Inline XBRL Taxonomy Extension Schema Document	X
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document	X
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document	X
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document	X
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document	X
104	The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, has been formatted in Inline XBRL.	X

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


	Cue Biopharma, Inc.


Dated: November 14, 2024	By:	/s/ Daniel R. Passeri

		Daniel R. Passeri Chief Executive Officer (Principal Executive Officer)

Dated: November 14, 2024	By:	/s/ Kerri-Ann Millar

		Kerri-Ann Millar Chief Financial Officer (Principal Financial and Accounting Officer)

Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION
OF
CUE BIOPHARMA, INC.

The present name of the corporation is Cue Biopharma, Inc. The corporation was incorporated under the name “Imagen Biopharma, Inc.” by the filing of its original Certificate of Incorporation with the Secretary of State of the State of Delaware on December 31, 2014. This Amended and Restated Certificate of Incorporation of the corporation, which restates and integrates and also further amends the provisions of the corporation’s Certificate of Incorporation was duly adopted in accordance with the provisions of Sections 242 and 245 of the Delaware General Corporation Law and by the written (or electronic) consent of its stockholders in accordance with Section 228 of the Delaware General Corporation Law. The Certificate of Incorporation of the corporation is hereby amended, integrated and restated to read in its entirety as follows:

ARTICLE I

Identification

SECTION 1.01. Name. The name of the Corporation is “Cue Biopharma, Inc.” (the “Corporation”).

ARTICLE II

Purpose

SECTION 2.01. Purpose. The purpose for which the Corporation is organized is to engage in any lawful act or activity for which corporations may be organized under the Delaware General Corporation Law (“DGCL”).

ARTICLE III

Capital Stock

SECTION 3.01. Amount. The total number of shares which the Corporation has authority to issue is 60,000,000 shares, consisting of: 10,000,000 shares designated as Preferred Stock, par value of $0.001 per share (“Preferred Stock”), and 50,000,000 shares designated as Common Stock, par value of $0.001 per share (“Common Stock”).

SECTION 3.02. Preferred Stock. Shares of Preferred Stock may be issued from time to time in one or more series. The Board of Directors (or any committee to which it may duly delegate the authority granted in this Article III) is hereby empowered to authorize the issuance from time to time of shares of Preferred Stock in one or more series, for such consideration and for such corporate purposes as the Board of Directors (or such committee thereof) may from time to time determine, and by filing a certificate (a “Preferred Stock Designation”) pursuant to applicable law of the State of Delaware, as it presently exists or may hereafter be amended, to establish from time to time for each such series the number of shares to be included in each such series and to fix the designations, powers, rights, and preferences of the shares of each such series, and the qualifications, limitations, and restrictions thereof to the fullest extent now or hereafter permitted by this Amended and Restated Certificate of Incorporation and the laws of the State of Delaware, including, without limitation, voting rights (if any), dividend rights, dissolution rights, conversion rights, exchange rights, and redemption rights thereof, as shall be stated and expressed in a resolution or resolutions adopted by the Board of Directors (or such committee thereof) providing for the issuance of such series of Preferred Stock. Each series of Preferred Stock shall be distinctly designated.

SECTION 3.03. Common Stock.

(A) The holders of shares of Common Stock shall be entitled to one vote for each such share on each matter submitted to the stockholders on which the holders of shares of Common Stock are entitled to vote. Except as otherwise required by law or this Amended and Restated Certificate of Incorporation, and subject to the rights of the holders of Preferred Stock, at any annual or special meeting of the stockholders the holders of shares of Common Stock shall have the right to vote for the election of directors and on all other matters submitted to a vote of the stockholders; provided, however, that, except as otherwise required by law, holders of Common Stock shall not be entitled to vote on any amendment to this Amended and Restated Certificate of Incorporation that relates solely to the terms, number of shares, powers, designations, preferences, or relative participating, optional, or other special rights (including, without limitation, voting rights), or to qualifications, limitations, or restrictions thereon, of one or more outstanding series of Preferred Stock if the holders of such affected series are entitled, either separately or together with the holders of one more other such series, to vote thereon pursuant to this Amended and Restated Certificate of Incorporation (including, without limitation, by any Preferred Stock Designation or pursuant to the DGCL.

(B) Subject to the rights of the holders of Preferred Stock, the holders of shares of Common Stock shall be entitled to receive such dividends and other distributions (payable in cash, property, or capital stock of the Corporation) when, as and if declared thereon by the Board of Directors from time to time out of any assets or funds of the Corporation legally available therefor, and shall share equally on a per share basis in such dividends and distributions.

(C) In the event of any voluntary or involuntary liquidation, dissolution, or winding-up of the Corporation, after payment or provision for payment of the debts and other liabilities of the Corporation, and subject to the rights of the holders of Preferred Stock in respect thereof, the holders of shares of Common Stock shall be entitled to receive all the remaining assets of the Corporation available for distribution to its stockholders, ratably in proportion to the number of shares of Common Stock held by them.

ARTICLE IV

Directors

SECTION 4.01. Management of the Corporation. The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors of the Corporation.

SECTION 4.02. Number. The number of directors of the Corporation shall be determined exclusively by resolution adopted by a majority of the Whole Board. For purposes of this Amended and Restated Certificate of Incorporation, the term “Whole Board” means the total number of authorized directors whether or not there exist any vacancies in previously authorized directorships.

SECTION 4.03. Election of Directors. The directors shall be elected at the annual meeting of stockholders by such stockholders as have the right to vote on such election. Directors need not be stockholders of the Corporation. Unless required by the Bylaws, the election of the Board of Directors need not be by written ballot.

SECTION 4.04. Vacancies. Any vacancy in the Board of Directors, however occurring, including a vacancy resulting from an enlargement of the Board of Directors, may be filled only by vote of a majority of the directors then in office, even if less than a quorum, or by a sole remaining director.

SECTION 4.05. Amendment of the Bylaws by the Board. The Board of Directors of the Corporation is expressly authorized to adopt, amend or repeal the Bylaws of the Corporation.

ARTICLE V

Indemnification

SECTION 5.01. Right to Indemnification and Advancement. The Corporation shall indemnify (and advance expenses to) its officers and directors to the fullest extent permitted by the DGCL, as amended from time to time.

ARTICLE VI

Director Liability

SECTION 6.01. Waiver of Liability. A director of the Corporation shall not be personally liable either to the Corporation or to any of its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under the DGCL. Any amendment or modification or repeal of the foregoing sentence or of the DGCL shall not adversely affect any right or protection of a director of the Corporation hereunder in respect of any act or omission occurring prior to the time of such amendment, modification, or repeal. If the DGCL hereafter is amended to further eliminate or limit the liability of a director, then a director of the Corporation, in addition to the circumstances in which a director is not personally liable as set forth in the preceding sentence, shall not be liable to the fullest extent permitted by the amended DGCL.

ARTICLE VII

Registered Agent and Registered Office

SECTION 7.01. Registered Agent and Office. The name and street address of the registered agent at the Corporation’s registered office are:

National Registered Agents, Inc.

160 Greentree Drive, Suite 101

Dover, DE 19904

County of Kent

ARTICLE VIII

Quorum Requirement

SECTION 8.01. Quorum. The holders representing a majority of the combined voting power of the capital stock issued and outstanding and entitled to vote at a meeting, present in person or represented by proxy, shall constitute a quorum.

ARTICLE IX

Cumulative Voting

SECTION 9.01. No Cumulative Voting. No holder of any shares of any class of stock of the Corporation shall be entitled to cumulative voting rights in any circumstances.

ARTICLE X

Preemptive Rights

SECTION 10.01. No Preemptive Rights. No stockholder shall have any preemptive rights to acquire unissued shares of the Corporation or securities of the Corporation convertible into or carrying a right to subscribe to or acquire shares.

ARTICLE XI

Internal Corporate Claims

SECTION 11.01. Venue for Internal Corporate Claims. Unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery in the State of Delaware shall be the sole and exclusive forum for all “internal corporate claims.” “Internal corporate claims” mean claims, including claims in the right of the Corporation, (i) that are based upon a violation of a duty by a current or former director or officer or stockholder in such capacity or (ii) as to which Title 8 of the Delaware Code confers jurisdiction upon the Court of Chancery, except for, as to each of (i) through (ii) above, any claim as to which the Court of Chancery determines that there is an indispensable party not subject to the jurisdiction of the Court of Chancery (and the indispensable party does not consent to the personal jurisdiction of the Court of Chancery within ten days following such determination), which is vested in the exclusive jurisdiction of a court or forum other than the Court of Chancery, or for which the Court of Chancery does not have subject matter jurisdiction. If any provision or provisions of this Article XI shall be held to be invalid, illegal or unenforceable as applied to any person or entity or circumstance for any reason whatsoever, then, to the fullest extent permitted by law, the validity, legality and enforceability of such provisions in any other circumstance and of the remaining provisions of this Article XI (including, without limitation, each portion of any sentence of this Article XI containing any such provision held to be invalid, illegal or unenforceable that is not itself held to be invalid, illegal or unenforceable) and the application of such provision to other persons or entities and circumstances shall not in any way be affected or impaired thereby.

ARTICLE XII

Supermajority Provisions

SECTION 12.01. Amendment of the Certificate of Incorporation by Stockholders. The Corporation reserves the right to amend, alter, change or repeal any provision contained in this Amended and Restated Certificate of Incorporation, in the manner now or hereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation; provided, however, that, notwithstanding any other provision of the Amended and Restated Certificate of Incorporation or any provision of law that might otherwise permit a lesser vote or no vote, but in addition to any vote of the holders of any class or series of the stock of the Corporation required by law or by this Amended and Restated Certificate of Incorporation, the affirmative vote of the holders of at least sixty-six and two-thirds percent (66 2/3%) of the voting power of the outstanding shares of stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class, shall be required to amend or repeal, or adopt any provision of this Amended and Restated Certificate of Incorporation inconsistent with Articles IV, V, XI and XII.

SECTION 12.02. Amendments to Bylaws by Stockholders. The stockholders shall also have the power to adopt, amend or repeal the Bylaws of the Corporation; provided, however, that, in addition to any vote of the holders of any class or series of stock of the Corporation required by law or by this Amended and Restated Certificate of Incorporation, the amendment of the Bylaws by the Corporation’s stockholders shall require the affirmative vote of the holders of at least sixty-six and two-thirds percent (66 2/3%) of the voting power of all of the then outstanding shares of the capital stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class.

IN WITNESS WHEREOF, this Amended and Restated Certificate of Incorporation has been executed by a duly authorized officer of this corporation on this 21st day of December, 2017.

CUE BIOPHARMA, INC.

     
    /s/ Daniel R. Passeri

    By:
Title:   

    Daniel R. Passeri 
Chief Executive Officer

STATE OF DELAWARE

CERTIFICATE OF AMENDMENT

OF AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

CUE BIOPHARMA, INC., a corporation duly organized and existing under the General Corporation Law of the State of Delaware (the “Corporation”), does hereby certify that:

FIRST: Pursuant to Section 242 of the General Corporation Law of the State of Delaware, this Certificate of Amendment of Amended and Restated Certificate of Incorporation amends and restates Section 3.01 of this corporation’s Amended and Restated Certificate of Incorporation to read in its entirety as follows:

SECTION 3.01. Amount: The total number of shares which the Corporation has authority to issue is 110,000,000 shares, consisting of: 10,000,000 shares designated as Preferred Stock, par value of $0.001 per share (“Preferred Stock”), and 100,000,000 shares designated as Common Stock, par value of $0.001 per share (“Common Stock”).

SECOND: The foregoing amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware.

IN WITNESS WHEREOF, said corporation has caused this certificate to be signed this 15th day of July, 2020.

CUE BIOPHARMA, INC.

     
    /s/ Daniel R. Passeri

    By:
Title:   

    Daniel R. Passeri 
Chief Executive Officer

CERTIFICATE OF AMENDMENT

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

CUE BIOPHARMA, INC.

Pursuant to Section 242 of the

General Corporation Law of the State of Delaware

Cue Biopharma, Inc. (the “Corporation”), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, does hereby certify:

FIRST: That the Board of Directors of the Corporation has duly adopted resolutions in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware authorizing, declaring advisable and approving an amendment to the Amended and Restated Certificate of Incorporation of the Corporation to (i) increase the number of authorized shares of capital stock of the Corporation and (ii) increase the number of authorized shares of Common Stock of the Corporation. Thereafter, the stockholders of the Corporation duly adopted such amendment in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware.

SECOND: That the amendment to the Amended and Restated Certificate of Incorporation of the Corporation set forth in this Certificate of Amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware by the Board of Directors and stockholders of the Corporation.

THIRD: That, upon the effectiveness of this Certificate of Amendment, Section 3.01 of Article III of the Amended and Restated Certificate of Incorporation, as heretofore amended, is hereby amended and restated in its entirety as follows:

“SECTION 3.01. Amount: The total number of shares which the Corporation has authority to issue is 210,000,000 shares, consisting of: 10,000,000 shares designated as Preferred Stock, par value of $0.001 per share (“Preferred Stock”), and 200,000,000 shares designated as Common Stock, par value of $0.001 per share (“Common Stock”).”

IN WITNESS WHEREOF, this Certificate of Amendment of Amended and Restated Certificate of Incorporation has been executed by a duly authorized officer of the Corporation on this 8th day of October, 2024.

CUE BIOPHARMA, INC.

     
    /s/ Daniel R. Passeri

    By:
Title:   

    Daniel R. Passeri 
Chief Executive Officer

Exhibit 10.2

Cue Biopharma, Inc.

Director Compensation Policy

Members of the Board of Directors (the “Board”) of Cue Biopharma, Inc. (the “Company”) who are not employees of the Company or any subsidiary of the Company (“non-employee directors”) shall receive compensation for their services on the Board in accordance with this Director Compensation Policy (this “Policy”).

Cash Compensation

Each non-employee director shall be paid an annual cash retainer of $35,000 prorated for partial periods and paid quarterly in arrears as soon as practicable following the end of each quarter for which payment under this Policy is owed.

In addition to the annual cash retainer described above, the chairman of the Board, if he or she is a non-employee director (the “Non-Employee Chairman”), shall be paid an annual cash retainer of $30,000 and standing committee members shall be paid the annual committee fees set forth below, in each case prorated for partial periods and paid quarterly in arrears as soon as practicable following the end of each quarter for which payment under this Policy is owed.


Audit Committee Chair:	$15,000
Audit Committee Member (other than the committee Chair):	$7,500
Compensation Committee Chair:	$10,000
Compensation Committee Member (other than the committee Chair):	$5,000
Corporate Development Committee Chair:	$10,000
Corporate Development Committee Member (other than the committee Chair):	$5,000
Science and Technology Strategy Committee Chair:	$10,000
Science and Technology Strategy Committee Member (other than the committee Chair):	$5,000
Corporate Governance and Nominating Committee Chair:	$8,000
Corporate Governance and Nominating Committee Member (other than the committee Chair):	$4,000

Equity Compensation

Upon initial appointment to the Board, a non-employee director shall be awarded, automatically and without the need for any further action by the Board, Options to purchase 48,800 shares of the Company’s common stock (“Common Stock”). So long as such non-employee director remains a Service Provider, such Options shall vest over three years with one-third vesting on the one-year anniversary of the grant date and the balance vesting in eight equal quarterly installments. Upon Separation from Service due to the non-employee director’s death, or if there is a Change in Control, then any such then unvested Options shall become fully vested as of the date of such death or Change in Control, as applicable. If such non-employee director ceases to remain a Service Provider for any reason other than death or a Change in Control, then any such unvested Options shall be forfeited as of the date of such Separation from Service.

On the first trading day following December 31 of each year (each, an “Annual Option Grant Date”), each non-employee director shall be awarded, automatically and without the need for any further action by the Board, Options to purchase 24,400 shares of Common Stock. So long as such non-employee director remains a Service Provider, such Options shall become vested as to 50% of the underlying shares on the six-month anniversary of the Annual Option Grant Date and as to the remaining 50% on the first anniversary of the Annual Option Grant Date. Upon Separation from Service due to the non-employee director’s death, or if there is a Change in Control, any such Options shall become fully vested as of the date of such death or Change in Control, as applicable. If a non-employee director ceases to remain a Service Provider for any reason other than death or a Change in Control, then any such unvested Options shall be forfeited as of the date of such Separation from Service.

Options issued in accordance with the terms of this Policy shall be made under and pursuant to the Company’s 2016 Omnibus Incentive Plan (the “Omnibus Plan”) or any successor plan. Capitalized terms used herein and not otherwise defined shall have the meanings given to them in the Non-Employee Plan or Omnibus Plan, as applicable. The Board, in its sole discretion and in recognition for meritorious service, may elect to vest up to 100% of a Director’s unvested equity awards upon retirement.

Non-Employee Director Compensation Limit

Notwithstanding anything herein to the contrary, the cash compensation and equity compensation that each non-employee director is entitled to receive under this Policy shall be subject to the limits set forth in Section 4.3.4 of the Omnibus Plan or any similar limits in any successor plan.

Expense Reimbursement

The compensation described in this Policy is in addition to reimbursement of all reasonable out-of-pocket expenses incurred by directors in attending meetings of the Board.

Employee Directors

An employee of the Company who serves as a director receives no additional compensation for such service.

Adopted Effective June 5, 2024

EXHIBIT 31.1

CERTIFICATION OF THE PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Daniel R. Passeri, certify that:

I have reviewed this Quarterly Report on Form 10-Q of Cue Biopharma, Inc.;

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)

Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)

Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 14, 2024

    /s/ Daniel R. Passeri

   

    Name:  Daniel R. Passeri

   

    Title:    Chief Executive Officer

   

    (Principal Executive Officer)

   

EXHIBIT 31.2

CERTIFICATION OF THE PRINCIPAL FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Kerri-Ann Millar, certify that:

I have reviewed this Quarterly Report on Form 10-Q of Cue Biopharma, Inc.;

(a)

(b)

(c)

(d)

(a)

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 14, 2024

    /s/ Kerri-Ann Millar

   

    Name:  Kerri-Ann Millar

   

    Title:    Chief Financial Officer
(Principal Financial Officer and Principal Accounting Officer)

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report on Form 10-Q of Cue Biopharma, Inc. (the “Company”) for the period ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Daniel R. Passeri, Chief Executive Officer of the Company, and Kerri-Ann Millar, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to our knowledge that:

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


/s/ Daniel R. Passeri		/s/ Kerri-Ann Millar
Name: Daniel R. Passeri		Name: Kerri-Ann Millar
Title: Chief Executive Officer		Title: Chief Financial Officer
(Principal Executive Officer)		(Principal Financial Officer and Principal Accounting Officer)

Date: November 14, 2024		Date: November 14, 2024

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2024	Nov. 10, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Trading Symbol	CUE
Entity Registrant Name	Cue Biopharma, Inc.
Entity Central Index Key	0001645460
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Interactive Data Current	Yes
Document Transition Report	false
Title of 12(b) Security	Common Stock, par value $0.001 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		63,350,327
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-38327
Entity Tax Identification Number	47-3324577
Entity Address, Address Line One	40 Guest Street
Entity Address, City or Town	Boston
Entity Address State or Province	MA
Entity Address, Postal Zip Code	02135
City Area Code	617
Local Phone Number	949-2680

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 32,420	$ 48,514
Accounts receivable	3,152	1,698
Prepaid expenses and other current assets	1,684	1,242
Total current assets	37,256	51,454
Property and equipment, net	570	795
Operating lease right-of-use	4,034	6,323
Deposits	2,690	2,690
Restricted cash	152	151
Other long-term assets	108	117
Total assets	44,810	61,530
Current liabilities:
Accounts payable	6,474	3,501
Accrued expenses	3,199	4,137
Research and development contract liability, current portion	259	2,112
Operating lease liabilities, current	2,895	3,368
Current portion of long-term debt, net	3,963	3,963
Total current liabilities	16,790	17,081
Operating lease liabilities, non-current	1,326	3,162
Long-term debt, net	1,328	4,202
Total liabilities	19,444	24,445
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized and 0 shares issued and outstanding at September 30, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value; 100,000,000 shares authorized; 60,207,717 and 47,215,116 shares issued and outstanding, at September 30, 2024 and December 31, 2023, respectively	60	47
Additional paid in capital	357,674	338,228
Accumulated deficit	(332,368)	(301,190)
Total stockholders' equity	25,366	37,085
Total liabilities and stockholders' equity	$ 44,810	$ 61,530

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - $ / shares	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	60,207,717	47,215,116
Common stock, shares outstanding	60,207,717	47,215,116

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Collaboration revenue	$ 3,336	$ 2,100	$ 7,711	$ 3,669
Operating expenses:
General and administrative	2,867	3,645	10,564	12,071
Research and development	9,381	9,874	29,111	29,915
Gain on fixed asset disposal	(97)	0	(97)	0
Total operating expenses	12,151	13,519	39,578	41,986
Loss from operations	(8,815)	(11,419)	(31,867)	(38,317)
Other income (expense):
Interest income	343	700	1,332	1,756
Interest expense	(188)	(286)	(643)	(738)
Total other income, net	155	414	689	1,018
Net loss	(8,660)	(11,005)	(31,178)	(37,299)
Unrealized gain from available-for-sale securities	0	5	0	96
Comprehensive loss	$ (8,660)	$ (11,000)	$ (31,178)	$ (37,203)
Net loss per common share, basic	$ (0.17)	$ (0.24)	$ (0.62)	$ (0.82)
Net loss per common share, diluted	$ (0.17)	$ (0.24)	$ (0.62)	$ (0.82)
Weighted average common shares outstanding, basic	51,229,701	46,358,555	50,292,983	45,274,124
Weighted average common shares outstanding, diluted	51,229,701	46,358,555	50,292,983	45,274,124

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	AOCI Attributable to Parent	Accumulated Deficit
Balance at Dec. 31, 2022	$ 65,683	$ 43	$ 316,192	$ (96)	$ (250,456)
Balance, Shares at Dec. 31, 2022		43,042,548
Issuance of common stock from ATM offering, net of sales agent commission and fees, Shares		1,915,131
Issuance of common stock from ATM offering, net of sales agent commission and fees, Amount	7,605	$ 2	7,603
Stock-based compensation	6,108		6,108
Exercise of stock options	473		473
Exercise of stock options, Shares		165,602
Unrealized gain from available-for-sale securities	96			96
Net Income (Loss)	(37,299)				(37,299)
Balance at Sep. 30, 2023	42,666	$ 45	330,376		(287,755)
Balance, Shares at Sep. 30, 2023		45,123,281
Balance at Jun. 30, 2023	46,004	$ 44	322,715	(5)	(276,750)
Balance, Shares at Jun. 30, 2023		43,744,414
Issuance of common stock from ATM offering, net of sales agent commission and fees, Shares		1,378,867
Issuance of common stock from ATM offering, net of sales agent commission and fees, Amount	5,589	$ 1	5,588
Stock-based compensation	2,073		2,073
Unrealized gain from available-for-sale securities	5			5
Net Income (Loss)	(11,005)				(11,005)
Balance at Sep. 30, 2023	42,666	$ 45	330,376		(287,755)
Balance, Shares at Sep. 30, 2023		45,123,281
Balance at Dec. 31, 2023	37,085	$ 47	338,228		(301,190)
Balance, Shares at Dec. 31, 2023		47,215,116
Issuance of common stock from ATM offering, net of sales agent commission and fees, Shares		1,428,200
Issuance of common stock from ATM offering, net of sales agent commission and fees, Amount	3,354	$ 1	3,353
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs, Share		11,564,401
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs, Amount	10,821	$ 12	10,809
Stock-based compensation	$ 5,284		5,284
Exercise of stock options, Shares	0
Net Income (Loss)	$ (31,178)				(31,178)
Balance at Sep. 30, 2024	25,366	$ 60	357,674	0	(332,368)
Balance, Shares at Sep. 30, 2024		60,207,717
Balance at Jun. 30, 2024	21,622	$ 48	345,282		(323,708)
Balance, Shares at Jun. 30, 2024		48,643,316
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs, Share		11,564,401
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs, Amount	10,821	$ 12	10,809
Stock-based compensation	1,583		1,583
Net Income (Loss)	(8,660)				(8,660)
Balance at Sep. 30, 2024	$ 25,366	$ 60	$ 357,674	$ 0	$ (332,368)
Balance, Shares at Sep. 30, 2024		60,207,717

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net Loss	$ (31,178,000)	$ (37,299,000)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	299,000	443,000
Stock-based compensation	5,284,000	6,108,000
Decrease in the carrying amount of right-of-use-assets	2,289,000	2,142,000
Gain on sale of property and equipment	(97,000)	(2,000)
Amortization of premium/discount on purchased securities	0	(234,000)
Amortization of debt issuance costs	27,729	27,729
Accretion of final payment on term loans	98,000	98,000
Changes in operating assets and liabilities:
Account receivable	(1,454,000)	(1,603,000)
Prepaid expenses and other current assets	(442,000)	(324,000)
Deposits	0	139,000
Accounts payable	2,972,000	(251,000)
Accrued expenses	(938,000)	1,573,000
Research and development contract liability	(1,853,000)	2,238,000
Operating lease liability	(2,309,000)	(2,064,000)
Accrued interest	0	5,000
Net cash used in operating activities	(27,301,000)	(29,003,000)
Cash flows from investing activities
Purchases of property and equipment	(64,000)	0
Cash received from the sale of property and equipment	97,000	2,000
Redemption of marketable securities	0	25,000,000
Net cash provided by investing activities	33,000	25,002,000
Cash flows from financing activities
Proceeds from ATM offering, net of sales agent commission and fees	3,354,000	7,605,000
Proceeds from issuance of common stock, warrants and pre-funded warrants, net of transaction costs	10,821,000	0
Repayment of term loans	(3,000,000)	(1,000,000)
Proceeds from exercise of stock options	0	473,000
Net cash provided by financing activities	11,175,000	7,078,000
Net (decrease) increase in cash, cash equivalents, and restricted cash	(16,093,000)	3,077,000
Cash, cash equivalents, and restricted cash at beginning of period	48,665,000	51,764,000
Cash, cash equivalents, and restricted cash at end of period	32,572,000	54,841,000
Supplemental disclosures of non-cash investing and financing activities:
Cash paid for interest	$ 547,000	$ 768,000

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (8,660)	$ (11,005)	$ (31,178)	$ (37,299)

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Organization and Basis of Presentation

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of Presentation

Public Offerings

million, and excluding any proceeds that may be received from exercise of the Common Stock Warrants and the Pre-Funded Warrants.

Consolidation

Use of Estimates

Cash Concentrations

Cash and Cash Equivalents

Marketable Securities

Restricted Cash

The Company had $0.2 million in restricted cash deposited with a separate commercial bank to collateralize Company credit cards as of September 30, 2024 and December 31, 2023.

Property and Equipment


Laboratory equipment		5 years
Computer equipment		3 years
Furniture and fixtures		3-8 years

Trademark

Debt Issuance Costs

Revenue Recognition

Research and Development Expenses

Patent Expenses

Licensing Fees and Costs

Long-Lived Assets

Leases

Stock-Based Compensation

Comprehensive Income (Loss)

Earnings (Loss) Per Share


	September 30,
	2024		2023
Common stock warrants		15,188,406		9,188,406
Common stock options		10,611,617		7,500,480
Total		25,800,023		16,688,886

Fair Value of Financial Instruments

The Company had $32.4 million and $39.1 million in cash equivalents as of September 30, 2024 and December 31, 2023, respectively.

Recent Accounting Pronouncements

Fair Value

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value


	Fair Value Measurements as of September 30, 2024
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	31,784	$	—	$	—	$	31,784
Total	$	31,784	$	—	$	—	$	31,784

	Fair Value Measurements as of December 31, 2023
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	39,148	$	—	$	—	$	39,148
Total	$	39,148	$	—	$	—	$	39,148

Property and Equipment

9 Months Ended

Sep. 30, 2024

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment as of September 30, 2024 and December 31, 2023 consisted of the following:


	September 30, 2024			December 31, 2023
	(in thousands)
Laboratory equipment	$	4,098		$	4,069
Furniture and fixtures		74			81
Computer equipment		180			143
Leasehold improvements		118			118
Total property and equipment		4,470			4,411
Less: accumulated depreciation		(3,900	)		(3,616	)
Property and equipment, net	$	570		$	795

Loan with First Citizens Bank (formerly with Silicon Valley Bank)

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Loan with Silicon Valley Bank

Loan with First Citizens Bank (formerly with Silicon Valley Bank)

The following table presents the aggregate maturities of long-term debt as of September 30, 2024 (in thousands):


Year
2024	$	1,000
2025		4,000
Total	$	5,000

The following table presents long-term and current portions of debt as of September 30, 2024 (in thousands):


Long-term debt	$	1,000
Accretion of final payment		337
Less: unamortized debt issuance costs		(9	)
Long-term debt, net	$	1,328
Current portion of long-term debt	$	4,000
Less: unamortized debt issuance costs		(37	)
Current portion of long-term debt, net	$	3,963

Debt Issuance Costs

Accrued Expenses

9 Months Ended

Sep. 30, 2024

Accrued Liabilities, Current [Abstract]

Accrued Expenses

6. Accrued Expenses

Accrued expenses consist of the following:


	September 30,		December 31,
(In thousands)	2024		2023
Contract research services	$	1,534	$	1,411
Employee and board compensation		800		2,219
Professional services		499		344
Contract manufacturing services		367		163
Total	$	3,199	$	4,137

Einstein License Agreement

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Einstein License Agreement

•

Pay royalties and amounts based on a certain percentage of proceeds, as defined in the Einstein License, from sales of Licensed Products and sublicense agreements.

•

Pay escalating annual maintenance fees, which are nonrefundable, but are creditable against the amount due to Einstein for royalties.

•

Incur minimum product development costs until the first commercial sale of the first licensed product.

The Company was in compliance with its obligations under the Einstein License at September 30, 2024 and 2023.

The Company accounts for license fees incurred in connection with the Einstein License in accordance with ASC 730, Research and Development. Please refer to Note 10 Collaboration Revenue.

Stock-Based Compensation

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Stock-based compensation

Stock-Based Compensation

Stock Option Valuation


		September 30, 2024
Risk-free interest rate		3.83% - 4.43%
Expected dividend yield		0%
Expected volatility		36.24% - 109.86%
Expected life		5.50 to 8.91 years

		September 30, 2023
Risk-free interest rate		3.40% - 4.16%
Expected dividend yield		0%
Expected volatility		97.03% - 110.4%
Expected life		5.50 to 6.25 years

A summary of stock option activity for the nine months ended September 30, 2024 is as follows:


	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in Years)
Stock options outstanding at December 31, 2023		7,492,917		$	8.41		6.12
Granted		4,183,300			1.42		—
Exercised		—			—		—
Cancelled		(1,064,600	)		7.27		—
Stock options outstanding at September 30, 2024		10,611,617			5.77		7.28
Stock options exercisable at September 30, 2024		5,240,539		$	9.27		5.27

The Company recognized $1.6 million and $5.3 million in stock-based compensation expense during the three and nine months ended September 30, 2024, respectively, related to stock options activity.

The Company recognized $2.1 million and $6.1 million in stock-based compensation expense during the three and nine months ended September 30, 2023, respectively, related to stock options activity.

Stock-based Compensation


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2024		2023		2024		2023
General and administrative	$	843	$	858	$	2,659	$	2,709
Research and development		740		1,215		2,625		3,399
Total stock-based compensation expense	$	1,583	$	2,073	$	5,284	$	6,108

Warrants

9 Months Ended

Sep. 30, 2024

Warrants and Rights Note Disclosure [Abstract]

Warrants

Collaboration Revenue

9 Months Ended

Sep. 30, 2024

Revenue from Contract with Customer [Abstract]

Collaboration Revenue

10.

Collaboration Revenue

Collaboration Agreement with LG Chem

Collaboration and Option Agreement with Ono

Commitments and Contingencies

9 Months Ended

Sep. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

11.

Commitments and Contingencies

Einstein License Agreement

Collaboration Agreement with LG Chem

See discussion of the LG Chem Collaboration Agreement in Note 10.

Collaboration Agreement with Ono

See discussion of the Ono Collaboration and Option Agreement in Note 10.

Contingencies

Leases

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

Leases

12.

Leases

Future minimum lease payments under these leases at September 30, 2024 are as follows:


	(in thousands)
2024 (remaining 3 months)	$	803
2025		2,799
2026		818
Total lease payments		4,420
Less: imputed interest		(199	)
Present value of lease payments	$	4,221

The weighted average remaining lease term and discount rate related to the Company's leases were as follows:



	September 30, 2024			December 31, 2023
Weighted average remaining lease term (years)		1.50			2.16
Weighted average discount rate		5.96	%		6.25	%

Subsequent Events

9 Months Ended

Sep. 30, 2024

Subsequent Events [Abstract]

Subsequent Events

13. Subsequent Events

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Basis of Presentation

Public Offerings

million, and excluding any proceeds that may be received from exercise of the Common Stock Warrants and the Pre-Funded Warrants.

Consolidation

Use of Estimates

Cash Concentrations

Cash and Cash Equivalents

Marketable Securities

Restricted Cash

The Company had $0.2 million in restricted cash deposited with a separate commercial bank to collateralize Company credit cards as of September 30, 2024 and December 31, 2023.

Property and Equipment


Laboratory equipment		5 years
Computer equipment		3 years
Furniture and fixtures		3-8 years

Trademark

Debt Issuance Costs

Revenue Recognition

Research and Development Expenses

Patent Expenses

Licensing Fees and Costs

Long-Lived Assets

Leases

Stock-Based Compensation

Comprehensive Income (Loss)

Earnings (Loss) Per Share


	September 30,
	2024		2023
Common stock warrants		15,188,406		9,188,406
Common stock options		10,611,617		7,500,480
Total		25,800,023		16,688,886

Fair Value of Financial Instruments

The Company had $32.4 million and $39.1 million in cash equivalents as of September 30, 2024 and December 31, 2023, respectively.

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Summary of Estimated Useful Lives of Assets

Depreciation of property and equipment is provided using the straight-line method over the following estimated useful lives:


Laboratory equipment		5 years
Computer equipment		3 years
Furniture and fixtures		3-8 years

Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share


	September 30,
	2024		2023
Common stock warrants		15,188,406		9,188,406
Common stock options		10,611,617		7,500,480
Total		25,800,023		16,688,886

Fair Value (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets Measured on Recurring Basis


	Fair Value Measurements as of September 30, 2024
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	31,784	$	—	$	—	$	31,784
Total	$	31,784	$	—	$	—	$	31,784

	Fair Value Measurements as of December 31, 2023
	(in thousands)
	Level 1		Level 2		Level 3		Fair Value
Cash equivalents	$	39,148	$	—	$	—	$	39,148
Total	$	39,148	$	—	$	—	$	39,148

Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2024

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment

Property and equipment as of September 30, 2024 and December 31, 2023 consisted of the following:


	September 30, 2024			December 31, 2023
	(in thousands)
Laboratory equipment	$	4,098		$	4,069
Furniture and fixtures		74			81
Computer equipment		180			143
Leasehold improvements		118			118
Total property and equipment		4,470			4,411
Less: accumulated depreciation		(3,900	)		(3,616	)
Property and equipment, net	$	570		$	795

Loan with First Citizens Bank (formerly with Silicon Valley Bank) (Tables)

9 Months Ended

Sep. 30, 2024

Debt Instruments [Abstract]

Summary of Future Principal Debt Payments on Term Loan Agreement

The following table presents the aggregate maturities of long-term debt as of September 30, 2024 (in thousands):


Year
2024	$	1,000
2025		4,000
Total	$	5,000

The following table presents long-term and current portions of debt as of September 30, 2024 (in thousands):


Long-term debt	$	1,000
Accretion of final payment		337
Less: unamortized debt issuance costs		(9	)
Long-term debt, net	$	1,328
Current portion of long-term debt	$	4,000
Less: unamortized debt issuance costs		(37	)
Current portion of long-term debt, net	$	3,963

Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2024

Accrued Liabilities, Current [Abstract]

Summary of Accrued Expenses

Accrued expenses consist of the following:


	September 30,		December 31,
(In thousands)	2024		2023
Contract research services	$	1,534	$	1,411
Employee and board compensation		800		2,219
Professional services		499		344
Contract manufacturing services		367		163
Total	$	3,199	$	4,137

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Schedule of Estimated Fair Value of Each Stock Option Award


		September 30, 2024
Risk-free interest rate		3.83% - 4.43%
Expected dividend yield		0%
Expected volatility		36.24% - 109.86%
Expected life		5.50 to 8.91 years

		September 30, 2023
Risk-free interest rate		3.40% - 4.16%
Expected dividend yield		0%
Expected volatility		97.03% - 110.4%
Expected life		5.50 to 6.25 years

Summary of Stock Option Activity

A summary of stock option activity for the nine months ended September 30, 2024 is as follows:


	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in Years)
Stock options outstanding at December 31, 2023		7,492,917		$	8.41		6.12
Granted		4,183,300			1.42		—
Exercised		—			—		—
Cancelled		(1,064,600	)		7.27		—
Stock options outstanding at September 30, 2024		10,611,617			5.77		7.28
Stock options exercisable at September 30, 2024		5,240,539		$	9.27		5.27

Schedule of Stock-Based Compensation Included in Statement of Operations


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2024		2023		2024		2023
General and administrative	$	843	$	858	$	2,659	$	2,709
Research and development		740		1,215		2,625		3,399
Total stock-based compensation expense	$	1,583	$	2,073	$	5,284	$	6,108

Leases (Tables)

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

Schedule of Future Minimum Lease Payments for Operating Lease

Future minimum lease payments under these leases at September 30, 2024 are as follows:


	(in thousands)
2024 (remaining 3 months)	$	803
2025		2,799
2026		818
Total lease payments		4,420
Less: imputed interest		(199	)
Present value of lease payments	$	4,221

Schedule of Other Information of Operating Leases

The weighted average remaining lease term and discount rate related to the Company's leases were as follows:



	September 30, 2024			December 31, 2023
Weighted average remaining lease term (years)		1.50			2.16
Weighted average discount rate		5.96	%		6.25	%

Organization and Basis of Presentation - Additional Information (Details) $ in Millions	Sep. 30, 2024 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents, and marketable securities	$ 32.4

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Sep. 26, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value		$ 0.001		$ 0.001		$ 0.001
Stock options granted purchase shares			1.1		2,600,000
Common Stock Warrant at a combined offering price		0.47		0.47
Pre-Funded Warrant Offer Price		$ 0.46906		$ 0.46906
Proceeds from ATM offering, net of sales agent commission and fees				$ 3,354	$ 7,605
Useful life of trademark				15 years
Type of Cost, Good or Service [Extensible List]		us-gaap:LicenseMember		us-gaap:LicenseMember
Cash equivalents		$ 32,400		$ 32,400		$ 39,100
Marketable securities		0		$ 0		0
Pre Funded Warrants				13,967,039
General and Administrative Expense [Member]
Summary Of Significant Accounting Policies [Line Items]
Patent expenses		500	$ 500	$ 1,500	1,600
Trademarks
Summary Of Significant Accounting Policies [Line Items]
Amortization of intangible assets		3,000	$ 3,000	9,000	$ 9,000
Certificate of Deposit
Summary Of Significant Accounting Policies [Line Items]
Restricted cash used to collateralize a credit card		200		200		$ 200
Transaction Expense \| Sales Agreement November 2019
Summary Of Significant Accounting Policies [Line Items]
Proceeds from sale of common stock		40,400		$ 40,400
Sale of common stock, number of shares				9,028,573
Jefferies LLC [Member] \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Proceeds from Issuance Initial Public Offering				$ 80,000
Jefferies LLC [Member] \| Transaction Expense
Summary Of Significant Accounting Policies [Line Items]
Proceeds from sale of common stock		80,000		$ 80,000
Jefferies LLC [Member] \| Transaction Expense \| Sales Agreement November 2019
Summary Of Significant Accounting Policies [Line Items]
Stock Issued During Period, Shares, New Issues			1,378,867	1,428,200	1,915,131
Proceeds from sale of common stock			$ 5,600	$ 3,400	$ 7,600
Oppenheimer & Co. Inc. [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock Issued During Period, Shares, New Issues	11,564,401
Proceeds from sale of common stock		$ 10,800		$ 10,800
Common stock, par value	$ 0.001
Stock options granted purchase shares	2,891,100
Common stock warrant purchases common shares	3,108,900
Common Stock Warrant at a combined offering price		$ 0.5		$ 0.5
Pre-Funded Warrant Offer Price		$ 0.499		$ 0.499
Offering expenses		$ 1,100		$ 1,100
Pre Funded Warrants	12,435,599
Oppenheimer & Co. Inc. [Member] \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Exercise Price of Pre-Fund warrant		$ 0.001		$ 0.001

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives of Assets (Details)	Sep. 30, 2024
Laboratory Equipment
Property Plant And Equipment [Line Items]
Estimated useful lives	5 years
Computer Equipment
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Furniture and Fixtures \| Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Furniture and Fixtures \| Maximum
Property Plant And Equipment [Line Items]
Estimated useful lives	8 years

Summary of Significant Accounting Policies - Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	25,800,023	16,688,886
Common Stock Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	15,188,406	9,188,406
Common Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	10,611,617	7,500,480

Fair Value - Schedule of Fair Value Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	$ 32,400	$ 39,100
Total	31,800	39,100
Fair Value Measurements, Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	31,784	39,148
Total	31,784	39,148
Fair Value Measurements, Recurring Basis \| Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	31,784	39,148
Total	31,784	39,148
Fair Value Measurements, Recurring Basis \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Total	0	0
Fair Value Measurements, Recurring Basis \| Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Total	$ 0	$ 0

Fair Value - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Cash equivalents	$ 31,800	$ 39,100
Fair value assets transfers between Level 2 and Level 3	$ 0	$ 0

Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 4,470	$ 4,411
Less accumulated depreciation	(3,900)	(3,616)
Net property and equipment	570	795
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	4,098	4,069
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	74	81
Computer and office equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	180	143
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 118	$ 118

Property and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Property Plant And Equipment [Line Items]
Depreciation expense	$ 100,000	$ 100,000	$ 300,000	$ 400,000
Amortization of trademark	3,000	3,000	9,000	9,000
Laboratory Equipment
Property Plant And Equipment [Line Items]
Disposal of property and equipment, gross		$ 41,450		41,450
Cash collected from sale of fixed assets	$ 100,000		$ 100,000	2,000
Laboratory Equipment \| Other Income
Property Plant And Equipment [Line Items]
Gain (Loss) on disposal of property and equipment				$ 2,000

Loan with First Citizens Bank (formerly with Silicon Valley Bank) - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended
	Feb. 15, 2025	Feb. 15, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Feb. 15, 2022
Line of Credit Facility [Line Items]
Interest expense			$ 100,000	$ 300,000	$ 500,000	$ 800,000
Final payment of debt			100,000	33,000	100,000	98,000
Debt issuance costs			142,000		142,000
Amortization of debt issuance costs			$ 9,000	$ 9,000	$ 27,729	$ 27,729
Silicon Valley Bank
Line of Credit Facility [Line Items]
Final fee (percentage)		5.00%
Prepayment premium rate	1.00%
Silicon Valley Bank \| Term Loan Agreement
Line of Credit Facility [Line Items]
Short-term debt							$ 10,000,000
Interest rate					10.25
Closing Date			Jun. 30, 2023		Jun. 30, 2023
Variable interest rate (percentage)					2.25%
Silicon Valley Bank \| Term Loan Agreement \| Maximum
Line of Credit Facility [Line Items]
Variable interest rate (percentage)					5.50%
Silicon Valley Bank \| Term Loan Agreement \| Minimum
Line of Credit Facility [Line Items]
Variable interest rate (percentage)					2.25%
Silicon Valley Bank \| Tranche A loan
Line of Credit Facility [Line Items]
Monthly installments					30 months

Loan with First Citizens Bank (formerly with Silicon Valley Bank) - Summary of Future Principal Debt Payments on Term Loan Agreement (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instruments [Abstract]
2024	$ 1,000
2025	4,000
Total	5,000
Long-term debt	1,000
Accretion of final payment	337
Less: unamortized debt issuance costs	(9)
Long-term debt, net	1,328	$ 4,202
Current portion of long-term debt	4,000
Less: unamortized debt issuance costs	(37)
Current portion of long-term debt, net	$ 3,963	$ 3,963

Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accrued Liabilities, Current [Abstract]
Contract research services	$ 1,534	$ 1,411
Employee and board compensation	800	2,219
Professional services	499	344
Contract manufacturing services	367	163
Total	$ 3,199	$ 4,137

Einstein License Agreement (Additional Information) (Details) - Einstein License Agreement $ in Millions		9 Months Ended
	Jan. 14, 2015	Sep. 30, 2024 USD ($) SupportingTechnology shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
License agreement entered date	Jan. 14, 2015
Number of supporting technology \| SupportingTechnology		2
Nonrefundable milestone payments \| $		$ 1.2
Issuance of common stock from public offerings, net of underwriter discounts, Shares \| shares		671,572

Stock Based Compensation - Schedule of Estimated Fair Value of Each Stock Option Award (Details)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate, minimum	3.83%	3.40%
Risk-free interest rate, maximum	4.43%	4.16%
Expected dividend yield	0.00%	0.00%
Expected volatility, minimum	36.24%	97.03%
Expected volatility, maximum	109.86%	110.40%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life	5 years 6 months	5 years 6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life	8 years 10 months 28 days	6 years 3 months

Stock Based Compensation - Summary of Stock Option Activity (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures [Abstract]
Number of Shares, Outstanding Beginning Balance	7,492,917
Number of Shares, Granted	4,183,300
Number of Shares, Exercised	0
Number of Shares, Cancelled	(1,064,600)
Number of Shares, Outstanding Ending Balance	10,611,617	7,492,917
Number of Shares, Exercisable	5,240,539
Weighted Average Exercise Price, Outstanding Beginning Balance	$ 8.41
Weighted Average Exercise Price, Granted	1.42
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Cancelled	7.27
Weighted Average Exercise Price, Outstanding Ending Balance	5.77	$ 8.41
Weighed Average Exercise Price, Exercisable	$ 9.27
Weighted Average Remaining Contractual Life (in Years)	7 years 3 months 10 days	6 years 1 month 13 days
Weighted Average Remaining Contractual Life (in Years), Exercisable	5 years 3 months 7 days

Stock Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 1,583	$ 2,073	$ 5,284	$ 6,108
Stock based payment options outstanding weighted average remaining term			7 years 3 months 10 days		6 years 1 month 13 days
Stock options granted purchase shares		1.1		2,600,000
weighted average grant date fair value		$ 4.17		$ 3.65
Unrecognized stock-based compensation	7,200	$ 12,100	$ 7,200	$ 12,100
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 1,600	$ 2,100	$ 5,300	$ 6,100
Stock based payment options outstanding weighted average remaining term			2 years 7 days	2 years 1 month 28 days

Stock Based Compensation - Schedule of Stock-Based Compensation Included in Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	$ 1,583	$ 2,073	$ 5,284	$ 6,108
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	843	858	2,659	2,709
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	$ 740	$ 1,215	$ 2,625	$ 3,399

Warrants - Additional Information (Details) - $ / shares			9 Months Ended
	Sep. 26, 2024	Nov. 16, 2022	Sep. 30, 2024
Class Of Warrant Or Right [Line Items]
Pre Funded Warrants			13,967,039
2024 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Common stock warrants outstanding	6,000,000	9,188,406
Exercise price of common stock warrants	$ 0.5	$ 3.93
Common stock warrants life		5 years
2024 Pre-Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Exercise price of common stock warrants	$ 0.001	$ 0.0001
Pre Funded Warrants	12,435,599	1,531,440

Collaboration Revenue - Additional Information (Details) - USD ($) $ in Thousands				3 Months Ended			9 Months Ended
	Nov. 23, 2021	Dec. 07, 2020	May 16, 2019	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Feb. 22, 2023	Nov. 06, 2018
Disaggregation Of Revenue [Line Items]
Collaboration revenue				$ 3,336	$ 2,100		$ 7,711	$ 3,669
Short-term research and development contract liability				259			259		$ 2,112
Milestone payment associated with contract liability	$ 3,000	$ 1,250	$ 2,500
Income tax expense			400
Prepaid expenses and other short-term assets				1,684			1,684		1,242
Other long-term assets				108			108		117
Accounts receivable				3,152			3,152		1,698
Ono Collaboration and Option Agreement [Member]
Disaggregation Of Revenue [Line Items]
Percentage of right to development and commercialized										50.00%
Development and commercial milestone payment payable cuo biopharma										$ 220,000
One Time Up Front Payment Payable As Consideration RD Activities				$ 3,000			3,000
Milestone payments received						$ 3,000	$ 3,000
First Research Term Processed Milestone Payment Under Agreement				18 months			18 months
Collaboration revenue				$ 3,400	1,900		$ 7,700	3,400
Short-term research and development contract liability				300			300		$ 2,100
Accounts receivable				500			500
Ono Collaboration and Option Agreement [Member] \| Maximum
Disaggregation Of Revenue [Line Items]
Full time employe salary payable in first research term				$ 2,100			2,100
Collaboration Agreement with LG Chem Life Sciences \| LG Chem Life Sciences
Disaggregation Of Revenue [Line Items]
Milestone payments received	3,000	1,300	2,500				6,800
Collaboration revenue					$ 200		$ 50	$ 200
Equity investment nonrefundable upfront cash payment											$ 5,000
Equity investment for research collaboration agreement											5,000
Milestone payment associated with contract liability	3,000	1,300	$ 2,500
Income tax expense	$ 500	$ 200
Collaboration Agreement with LG Chem Life Sciences \| LG Chem Life Sciences \| Maximum
Disaggregation Of Revenue [Line Items]
Additional amount receivable research development regulatory and sales milestones											$ 400,000

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Commitments And Contingencies [Line Items]
Type of Cost, Good or Service [Extensible List]	us-gaap:LicenseMember		us-gaap:LicenseMember
Albert Einstein College Of Medicine \| Einstein License And Service Agreement
Commitments And Contingencies [Line Items]
Milestone payments for each product, process or service			$ 1,900
Milestone payments for each new indication of licensed product			1,900
Aggregate amount of additional milestone payments			5,800
Einstein License
Commitments And Contingencies [Line Items]
Patent expenses	$ 30		$ 80
Type of Cost, Good or Service [Extensible List]	us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember

Leases - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
Leases - Additional Information (Details)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2022 USD ($)	May 03, 2022 USD ($)	Apr. 15, 2022 USD ($)	Mar. 28, 2022 ft²
Lessee Lease Description [Line Items]
Operating lease right-of-use	$ 4,034,000		$ 4,034,000			$ 6,323,000
Operating lease, liability	4,221,000		4,221,000
Rent expense	$ 900,000	$ 900,000	$ 2,600,000	$ 2,600,000
Operating lease, weighted average discount rate	5.96%		5.96%			6.25%
Operating lease liability, current portion	$ 2,895,000		$ 2,895,000			$ 3,368,000
Operating lease liability, net of current portion	1,326,000		1,326,000			3,162,000
Non-cash interest expense to the lease liability	100,000	$ 100,000	300,000	$ 400,000
License Agreement
Lessee Lease Description [Line Items]
Operating lease right-of-use	9,100,000		9,100,000
Operating lease, liability	9,100,000		9,100,000
Operating lease, weighted average discount rate					8.00%
Security deposit								$ 225,760
License monthly rental rate								209,700
License monthly rental rate first year									$ 200,700
License monthly rental rate remainder of the term								200,700	225,760
License monthly rental rate second year									208,728
License monthly rental rate third year									$ 217,077
Increase in security deposit								$ 235,884
First Amendment \| License Agreement
Lessee Lease Description [Line Items]
Operating lease right-of-use					$ 369,000
Operating lease liability, current portion					100,300
Operating lease liability, net of current portion					260,600
40G Office and Additional Laboratory
Lessee Lease Description [Line Items]
Security deposit	600,000		600,000			$ 600,000
Lab Space Lease Member
Lessee Lease Description [Line Items]
Operating lease right-of-use					945,000
Operating lease cost (in thousands)					963,000
Gain on right-of-use asset termination			19,000
ASU 2016-02
Lessee Lease Description [Line Items]
Operating lease right-of-use	4,000,000		4,000,000
Operating lease, liability	4,200,000		4,200,000
Operating lease liability, current portion	2,900,000		2,900,000
Operating lease liability, net of current portion	$ 1,300,000		$ 1,300,000
Cambridge, Massachusetts
Lessee Lease Description [Line Items]
Office space for lease \| ft²										13,000
Boston, Massachusetts \| Operating Lease Agreement For Additional Laboratory Space
Lessee Lease Description [Line Items]
Operating lease right-of-use					$ 1,307,000
Lessee operating lease monthly rental payments for remaining term							$ 61,519
Lessee operating lease monthly rental payments							$ 59,152
Operating lease, weighted average discount rate					10.00%
Operating lease liability, current portion					$ 712,000
Operating lease liability, net of current portion					$ 535,000

Leases - Schedule of Future Minimum Lease Payments on Operating Leases (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Leases [Abstract]
2024 (remaining 6 months)	$ 803
2025	2,799
2026	818
Total lease payments	4,420
Less: imputed interest	(199)
Present value of lease payments	$ 4,221

Leases - Schedule of Other Information of Operating Leases (Details)	Sep. 30, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (years)	1 year 6 months	2 years 1 month 28 days
Weighted average discount rate	5.96%	6.25%

Subsequent Events (Additional Information) (Details) - USD ($) $ in Thousands	Oct. 08, 2024	Oct. 02, 2024	Sep. 30, 2024	Dec. 31, 2023
Subsequent Event [Line Items]
Common stock, shares authorized			100,000,000	100,000,000
Subsequent Event
Subsequent Event [Line Items]
Threshold Amount		$ 20,000,000
Percentage of Dollar Value		100.00%
Subsequent Event \| Maximum
Subsequent Event [Line Items]
Authorized Share of Company Capital Stock	210,000,000
Common stock, shares authorized	200,000,000
Subsequent Event \| Minimum
Subsequent Event [Line Items]
Authorized Share of Company Capital Stock	110,000,000
Common stock, shares authorized	100,000,000

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