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, 2023


☐			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: 001-36343

A10 NETWORKS, INC.

(Exact Name of Registrant as Specified in its Charter)


Delaware						20-1446869
(State or Other Jurisdiction of Incorporation or Organization)						(I.R.S. Employer Identification No.)
2300 Orchard Parkway, San Jose, California 95131
(Address of Principal Executive Offices and Zip Code)

(408) 325-8668

(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, $0.00001 par value

ATEN

New York Stock Exchange

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 x 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 x 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	x	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 x

As of November 2, 2023, the number of outstanding shares of the registrant’s common stock, par value $0.00001 per share, was 74,138,224.

A10 NETWORKS, INC.

FORM 10-Q

TABLE OF CONTENTS


			Page No.
Note Regarding Forward-Looking Statements			2
PART I. FINANCIAL INFORMATION			4
Item 1. Condensed Consolidated Financial Statements (unaudited):			4
Condensed Consolidated Balance Sheets as of September 30, 2023 and December 31, 2022			4
Condensed Consolidated Statements of Operations for the Three and Nine Months Ended S e ptember 30, 2023 and 2022			5
Condensed Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2023 and 2022			6
Condensed Consolidated Statements of Stockholders’ Equity for the Three and Nine Months Ended September 30, 2023 and 2022			7
Condensed Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2023 and 2022			9
Notes to Condensed Consolidated Financial Statements			10
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations			23
Item 3. Quantitative and Qualitative Disclosures About Market Risk			35
Item 4. Controls and Procedures			35
PART II. OTHER INFORMATION			37
Item 1. Legal Proceedings			37
Item 1A. Risk Factors			37
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds			37
Item 5. Other Information			38
Item 6. Exhibits			38
Signatures			39

NOTE REGARDING FORWARD-LOOKING STATEMENTS

The 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. The words “believe,” “may,” “will,” “potentially,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “would,” “project,” “plan,” “expect,” and similar expressions that convey uncertainty of future events or outcomes are intended to identify forward-looking statements.

These forward-looking statements include, but are not limited to, statements concerning the following:

• our strategy, business plan and our ability to effectively manage our growth and business operations;

• our expectations with respect to recognizing revenue related to remaining performance obligations;

• our plans to introduce new products;

• loss or delay of expected purchases by our largest end-customers;

• our expectations concerning relationships with third parties;

• our expectations with respect to the realization of our tax assets and our unrecognized tax benefits;

• our plans with respect to the repatriation of our earnings from our foreign operations;

• our ability to maintain profitability while continuing to invest in our sales, marketing, product development, distribution channel partner programs and research and development teams;

• our expectations regarding our future costs and expenses;

• variability of our gross margin and the factors affecting it;

• our expectations with respect to liquidity position and future capital requirements;

• our stock repurchase program and our quarterly cash dividends;

• our accounting policies and estimates;

• fluctuations in currency exchange rates;

• the cost and potential outcomes of litigation; and

• future acquisitions of or investments in complementary companies, products, services or technologies.

These forward-looking statements are subject to a number of risks, uncertainties, and assumptions, including those described herein and elsewhere in our Annual Report on Form 10-K filed with the SEC on February 27, 2023. Moreover, we operate in a very competitive and rapidly changing environment, and new risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. Important factors that could cause our actual results and financial condition to differ materially from those indicated in the forward-looking statements include, among others, the following: unanticipated changes in the markets in which the Company operates; a significant decline in global macroeconomic or political conditions that have an adverse impact on our business and financial results; business interruptions related to our supply chain; our ability to manage our business and expenses if customers cancel or delay orders; execution risks related to closing key deals and improving our execution, the continued market adoption of our products, our ability to successfully anticipate market needs and opportunities, our timely development of new products and features, our ability to maintain profitability, any loss or delay of expected purchases by our largest end-customers, our ability to maintain or improve our competitive position, competitive and execution risks related to cloud-based computing trends, our ability to attract and retain new end-customers and our largest end-consumers, our ability to maintain and enhance our brand and reputation, changes demanded by our customers in the deployment and payment model for our products, continued growth in markets relating to networking and network security, the success of any future acquisitions or investments in complementary companies, products, services or technologies, the ability of our sales and other teams to execute well, our ability to shorten our close cycles, the ability of our channel partners to sell our products, variations in product mix or geographic locations of our sales, risks associated with our presence in international markets, weaknesses or deficiencies in our internal control over financial reporting, the impact of any cybersecurity incidents and our ability to timely file periodic reports required to be filed under the Securities Exchange Act of 1934, as well as other risks identified in the “Risk Factors” section contained in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2022 and this Report.

In light of these risks, uncertainties, and assumptions, the forward-looking events and circumstances discussed in this Quarterly Report on Form 10-Q may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance or events and circumstances reflected in the forward-looking statements will be achieved or occur. Any

forward-looking statements made by us in this report speak only as of the date of this report, and we do not intend to update these forward-looking statements after the filing of this report, except as required by law.

Our investor relations website is located at https://investors.A10networks.com. We use our investor relations website, our company blog (https://www.a10networks.com/blog) and our corporate Twitter account (https://twitter.com/A10Networks) to post important information for investors, including news releases, analyst presentations, and supplemental financial information, and as a means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. Accordingly, investors should monitor our investor relations website, our company blog and our corporate Twitter account, in addition to following press releases, SEC filings and public conference calls and webcasts. We also make available, free of charge, on our investor relations website under “SEC Filings,” our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to these reports as soon as reasonably practicable after electronically filing or furnishing those reports to the SEC.

PART I. FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except par value)


	September 30, 2023		December 31, 2022
ASSETS
Current assets:
Cash and cash equivalents	$	104,152	$	67,971
Marketable securities	64,889		83,018
Accounts receivable, net of allowances of $197 and $32, respectively	59,070		72,928
Inventory	23,561		19,693
Prepaid expenses and other current assets	12,959		13,381
Total current assets	264,631		256,991
Property and equipment, net	26,054		19,743
Goodwill	1,307		1,307

Deferred tax assets, net	61,088		63,183
Other non-current assets	24,762		27,881
Total assets	$	377,842	$	369,105
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	8,214	$	6,725
Accrued liabilities	23,577		37,183
Deferred revenue	79,540		74,340
Total current liabilities	111,331		118,248
Deferred revenue, non-current	56,174		52,652
Other non-current liabilities	13,415		17,193
Total liabilities	180,920		188,093
Commitments and contingencies (Note 2 and Note 5)
Stockholders' equity:
Common stock, $0.00001 par value: 500,000 shares authorized; 88,739 and 87,123 shares issued and 74,750 and 73,738 shares outstanding, respectively	1		1
Treasury stock, at cost: 13,989 and 13,384 shares, respectively	(143,606)		(134,934)
Additional paid-in-capital	481,765		466,927
Dividends paid	(33,171)		(19,802)
Accumulated other comprehensive income (loss)	334		(726)
Accumulated deficit	(108,401)		(130,454)
Total stockholders' equity	196,922		181,012
Total liabilities and stockholders' equity	$	377,842	$	369,105

See accompanying notes to the condensed consolidated financial statements.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except per share amounts)


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Revenue:
Products	$	30,260	$	45,104	$	100,532	$	123,624
Services	27,515		26,955		80,751		79,080
Total revenue	57,775		72,059		181,283		202,704
Cost of revenue:
Products	6,815		10,191		22,334		28,342
Services	4,194		4,574		12,354		12,747
Total cost of revenue	11,009		14,765		34,688		41,089
Gross profit	46,766		57,294		146,595		161,615
Operating expenses:
Sales and marketing	21,324		21,605		64,526		66,159
Research and development	17,620		14,360		43,250		41,483
General and administrative	5,613		5,661		18,177		17,160
Total operating expenses	44,557		41,626		125,953		124,802
Income from operations	2,209		15,668		20,642		36,813
Non-operating income (expense), net:
Interest income	1,766		432		3,401		736
Other income (expense), net	987		(871)		653		(1,204)
Non-operating income (expense), net	2,753		(439)		4,054		(468)
Income before provision for income taxes	4,962		15,229		24,696		36,345
Income tax provision (benefit)	(1,507)		3,116		2,643		7,467
Net income	$	6,469	$	12,113	$	22,053	$	28,878
Net income per share:
Basic	$	0.09	$	0.16	$	0.30	$	0.38
Diluted	$	0.09	$	0.16	$	0.29	$	0.37
Weighted-average shares used in computing net income per share:
Basic	74,526		75,881		74,184		76,191
Diluted	75,807		77,679		75,639		78,454

See accompanying notes to the condensed consolidated financial statements.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Net income	$	6,469	$	12,113	$	22,053	$	28,878
Other comprehensive income (expense), net of tax:
Realized loss reclassified to earnings	—		—		(265)		—
Unrealized gain (loss) on marketable securities	(177)		(135)		1,208		(1,112)
Unrealized gain (loss) on cash flow hedge	(31)		—		117		—
Comprehensive income	$	6,261	$	11,978	$	23,113	$	27,766

See accompanying notes to the condensed consolidated financial statements.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(unaudited, in thousands)


			Three Months Ended September 30,				Nine Months Ended September 30,
			2023		2022		2023		2022
Shares of common stock issued and outstanding
	Beginning balance		74,083		75,962		73,738		77,423
	Common stock issued under employee equity incentive plans		835		1,164		1,616		2,073
	Repurchase of common stock		(168)		(3,720)		(604)		(6,090)
		Ending balance	74,750		73,406		74,750		73,406

Stockholders' equity
	Beginning balance		$	192,939	$	194,759	$	181,012	$	208,888
	Common stock:
		Beginning balance	$	1	$	1	$	1	$	1
		Common stock issued under employee equity incentive plans	—		—		—		—
		Ending balance	$	1	$	1	$	1	$	1

	Treasury stock, at cost:
		Beginning balance	$	(141,164)	$	(87,435)	$	(134,934)	$	(55,677)
		Repurchase of common stock	(2,442)		(47,499)		(8,672)		(79,257)
		Ending balance	$	(143,606)	$	(134,934)	$	(143,606)	$	(134,934)

	Dividends paid:
		Beginning balance	$	(28,682)	$	(11,543)	$	(19,802)	$	(3,880)
		Payments for dividends	(4,489)		(3,849)		(13,369)		(11,512)
		Ending balance	$	(33,171)	$	(15,392)	$	(33,171)	$	(15,392)

	Additional paid-in capital:
		Beginning balance	$	477,111	$	455,539	$	466,927	$	446,035
		Common stock issued under employee equity incentive plans	437		1,691		2,996		4,662
		Stock-based compensation	4,217		3,654		11,842		10,187
		Ending balance	$	481,765	$	460,884	$	481,765	$	460,884

	Accumulated other comprehensive income (loss):
		Beginning balance	$	542	$	(1,206)	$	(726)	$	(229)
		Realized loss reclassified to earnings	—		—		(265)		—
		Unrealized gain (loss) on marketable securities, net of tax	(177)		(135)		1,208		(1,112)
		Unrealized gain (loss) on cash flow hedge, net of tax	(31)		—		117		—
		Ending balance	$	334	$	(1,341)	$	334	$	(1,341)

	Accumulated deficit:
		Beginning balance	$	(114,870)	$	(160,597)	$	(130,454)	$	(177,362)
		Net income	6,469		12,113		22,053		28,878
		Ending balance	$	(108,401)	$	(148,484)	$	(108,401)	$	(148,484)

Total stockholders' equity			$	196,922	$	160,734	$	196,922	$	160,734

See accompanying notes to the condensed consolidated financial statements.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)


	Nine Months Ended September 30,
	2023		2022
Cash flows from operating activities:
Net income	$	22,053	$	28,878
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,845		5,539
Stock-based compensation	11,180		9,818

Other non-cash items	774		49
Changes in operating assets and liabilities:
Accounts receivable	14,056		(11,090)
Inventory	(5,313)		530
Prepaid expenses and other assets	2,033		(2,574)
Accounts payable	(1,183)		(914)
Accrued liabilities	(17,384)		4,001
Deferred revenue	8,722		4,536

Net cash provided by operating activities	41,783		38,773
Cash flows from investing activities:
Proceeds from sales of marketable securities	42,252		6,252
Proceeds from maturities of marketable securities	54,007		48,248
Purchases of marketable securities	(75,064)		(45,699)
Purchases of property and equipment	(7,752)		(8,261)
Net cash provided by investing activities	13,443		540
Cash flows from financing activities:
Proceeds from issuance of common stock under employee equity incentive plans	2,996		4,662


Repurchase of common stock	(8,672)		(79,257)
Payments for dividends	(13,369)		(11,512)

Net cash used in financing activities	(19,045)		(86,107)
Net increase (decrease) in cash and cash equivalents	36,181		(46,794)
Cash and cash equivalents—beginning of period	67,971		78,925
Cash and cash equivalents—end of period	$	104,152	$	32,131

Non-cash investing and financing activities:
Transfers between inventory and property and equipment	$	1,445	$	642
Purchases of property and equipment included in accounts payable	$	2,672	$	108

See accompanying notes to the condensed consolidated financial statements.

A10 Networks, Inc.

Notes to Condensed Consolidated Financial Statements

(unaudited)

1. Description of Business and Summary of Significant Accounting Policies

Description of Business

A10 Networks, Inc. (together with our subsidiaries, the “Company”, “we”, “our” or “us”) was incorporated in California in 2004 and reincorporated in Delaware in March 2014. We are headquartered in San Jose, California and have wholly-owned subsidiaries throughout the world including Asia and Europe.

We are a leading provider of secure application solutions and services that enable a new generation of intelligently connected companies with the ability to continuously improve cyber protection and digital responsiveness across dynamic Information Technology (“IT”) and network infrastructures. Our product portfolio seeks to address many of the cyber protection challenges and solution requirements. The portfolio consists of six secure application solutions; Thunder Application Delivery Controller (“ADC”), Lightning Application Delivery Controller (“Lightning ADC”), Thunder Carrier Grade Networking (“CGN”), Thunder Threat Protection System (“TPS”), Thunder SSL Insight (“SSLi”) and Thunder Convergent Firewall (“CFW”), and two intelligent management and automation tools; Harmony Controller and aGalaxy TPS. Our solutions are available in a variety of form factors, such as optimized hardware appliances, bare metal software, containerized software, virtual appliances and cloud-native software. Our customers include leading service providers (cloud, telecommunications, multiple system operators, cable), government organizations, and enterprises.

We derive revenue from two sources: (i) products revenue, which includes hardware, perpetual software license and subscription offerings, which include term-based license agreements and software-as-a-service; and (ii) services revenue, which includes post contract support (“PCS”), professional services, and training. Revenue for term-based license agreements is recognized at a point in time when the Company delivers the software license to the customer and over time once the subscription term has commenced. For our software-as-a-service offerings, our customers do not take possession of the Company’s software but rather we provide access to the service via a hosting arrangement. Revenue in these arrangements is recognized over time as the services are provided. A substantial portion of our revenue is from sales of our products and services through distribution channel partners, such as resellers and distributors. Our customers predominantly purchase PCS services in conjunction with purchases of our products. We recognize services revenue ratably over the term of the PCS contract, which is typically one year, but can be up to seven years.

We sell our products globally to service providers and enterprises that depend on data center applications and networks to generate revenue and manage operations efficiently. We report two customer verticals: service providers and enterprises and we report customer revenues in three broad geographic regions: the Americas, APJ and EMEA regions. The Americas region comprises the United States and all other countries in the Americas (excluding the United States). The APJ region comprises Japan and all other countries in APAC (excluding Japan). The EMEA region comprises Europe, Middle East and Africa. We believe this vertical and geographic view aligns with how we manage the business and maps our product portfolio to customer verticals.

Our end-customers operate in a variety of industries, including telecommunications, technology, industrial, retail, financial, gaming, education and government. Since inception, our customer base has grown rapidly. As of September 30, 2023, we have sold our products to more than 8,290 end-customers worldwide since our inception.

We sell substantially all of our solutions through our high-touch sales organization as well as distribution channel partners, including distributors, value-added resellers and system integrators, and fulfill nearly all orders globally through such partners. We believe this sales approach allows us to obtain the benefits of channel distribution, such as expanding our market coverage, while still maintaining face-to-face relationships with our end-customers. We outsource the manufacturing of our hardware products to original design manufacturers. We perform quality assurance and testing at our San Jose, Taiwan and Japan distribution centers, as well as at our manufacturers’ locations.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include those of A10 Networks, Inc. and its subsidiaries after elimination of all intercompany accounts and transactions.

We have prepared the accompanying unaudited condensed consolidated financial statements pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC” or the “Commission”). As permitted under these rules and regulations, we have condensed or omitted certain financial information and footnote disclosures we normally include in our annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The unaudited condensed consolidated balance sheet as of December 31,

2022 has been derived from our audited financial statements, which are included in our 2022 Annual Report on Form 10-K for the year ended December 31, 2022 on file with the SEC (the “2022 Annual Report”).

These financial statements have been prepared on the same basis as our annual financial statements and, in management’s opinion, reflect all adjustments consisting only of normal recurring adjustments that are necessary for a fair presentation of our financial information. Our interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year.

These financial statements and accompanying notes should be read in conjunction with the financial statements and accompanying notes thereto in the 2022 Annual Report.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Those estimates and assumptions affect revenue recognition and deferred revenue, the allowance for doubtful accounts, the sales return reserve, the valuation of inventory, the fair value of marketable securities, contingencies and litigation, accrued liabilities, deferred commissions and the determination of fair value of stock-based compensation. These estimates are based on information available as of the date of the condensed consolidated financial statements.

Significant Accounting Policies

The Company’s significant accounting policies are disclosed in Part II – Item 8, “Financial Statements and Supplementary Data” of the 2022 Annual Report filed with the SEC on February 27, 2023. There have been no material changes to the Company’s significant accounting policies during the three and nine months ended September 30, 2023.

Concentration of Credit Risk and Significant Customers

Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, marketable securities and accounts receivable. Our cash, cash equivalents and marketable securities are held and invested in high credit quality financial instruments by recognized financial institutions and are subject to minimum credit risk.

Our accounts receivables are unsecured and represent amounts due to us based on contractual obligations of our customers. We mitigate credit risk in respect to accounts receivable by performing periodic credit evaluations based on a number of factors, including past transaction experience, evaluation of credit history and review of the invoicing terms of the contract. We generally do not require our customers to provide collateral to support accounts receivable.

Significant customers, including distribution channel partners and direct customers (end-customers), are those which represent 10% or more of our total revenue for each period presented or our gross accounts receivable balance as of each respective balance sheet date.

Revenues from our significant customers as a percentage of our total revenue are as follows:


	Three Months Ended September 30,		Nine Months Ended September 30,
Customers	2023	2022	2023	2022
Customer A (an end-customer)	*	10%	15%	10%
Customer B (an end-customer)	*	*	*	13%

* represents less than 10% of total revenue

As of September 30, 2023, two customers accounted for 11% and 10%, respectively, of our total gross accounts receivable. As of December 31, 2022, two customers accounted for 21% each of our total gross accounts receivable.

Recently Adopted Accounting Pronouncements

The Company’s recently adopted accounting pronouncements are disclosed in Note 1 Description of Business and Summary of Significant Accounting Policies of the notes to consolidated financial statements included in Part II – Item 8 of the 2022 Annual Report. The Company has not adopted any accounting pronouncements during the three and nine months ended September 30, 2023.

2. Leases

The Company leases various operating spaces in the United States, Asia and Europe under non-cancellable operating lease arrangements that expire on various dates through July 2027. These arrangements require us to pay certain operating expenses, such as taxes, repairs and insurance, and contain renewal and escalation clauses.

The table below presents the Company’s right-of-use assets and lease liabilities as of September 30, 2023 (in thousands):


		As of September 30, 2023
Operating leases
Right-of-use assets:
	Other non-current assets	$	17,589
Total right-of-use assets		$	17,589

Lease liabilities:
	Accrued liabilities	$	4,898
	Other non-current liabilities	13,063
Total operating lease liabilities		$	17,961

The aggregate future lease payments for non-cancelable operating leases as of September 30, 2023 were as follows (in thousands):


Remainder of 2023	$	1,347
2024	5,421
2025	4,948
2026	4,892
2027	2,441
Thereafter	—
Total lease payments	19,049
Less: imputed interest	(1,088)
Present value of lease liabilities	$	17,961

The components of lease costs were as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Operating lease costs	$	1,087	$	1,085	$	3,291	$	3,248
Short-term lease costs	129		126		378		417
Total lease costs	$	1,216	$	1,211	$	3,669	$	3,665

Average lease terms and discount rates for the Company’s operating leases were as follows:


						Three Months Ended September 30, 2023
Weighted-average remaining term (years)						3.61
Weighted-average discount rate						3.19%

Supplemental cash flow information for the Company’s operating leases were as follows (in thousands):


		Three Months Ended September 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from operating leases	$	3,972
	Right-of-use assets obtained in exchange for new lease liabilities	$	—

3. Marketable Securities and Fair Value Measurements

Marketable Securities

Marketable securities, classified as available-for-sale, consisted of the following (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value

Corporate debt securities	$	36,782	$	9	$	(74)	$	36,717	$	35,137	$	—	$	(550)	$	34,587
U.S. Treasury and agency securities	27,257		1		(70)		27,188		28,627		—		(292)		28,335
Commercial paper	950		34		—		984		11,859		—		—		11,859
Asset-backed securities	—		—		—		—		8,331		—		(94)		8,237
Total	$	64,989	$	44	$	(144)	$	64,889	$	83,954	$	—	$	(936)	$	83,018

During the nine months ended September 30, 2023, we reclassified $0.3 million of expense to earnings from accumulated other comprehensive income (loss) related to unrealized losses. During the three months ended September 30, 2023 and 2022, and the nine months ended September 30, 2022, we did not reclassify any amount to earnings from accumulated other comprehensive income (loss) related to unrealized gains or losses.

The following table summarizes the cost and estimated fair value of marketable securities based on stated effective maturities as of September 30, 2023 (in thousands):


As of September 30, 2023	Amortized Cost		Fair Value
Mature in less than 1 year	$	63,089	$	63,003
Mature in 1 - 3 years	1,900		1,886
Total	$	64,989	$	64,889

All available-for-sale securities have been classified as current because they are available for use in current operations.

Marketable securities in an unrealized loss position as of September 30, 2023 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of September 30, 2023	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	33,829	$	(74)	$	—	$	—	$	33,829	$	(74)
U.S. Treasury and agency securities	14,662		(70)		—		—		14,662		(70)

	$	48,491	$	(144)	$	—	$	—	$	48,491	$	(144)

Marketable securities in an unrealized loss position as of December 31, 2022 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of December 31, 2022	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	7,610	$	(162)	$	26,977	$	(388)	$	34,587	$	(550)
U.S. Treasury and agency securities	14,868		(45)		11,567		(247)		26,435		(292)
Asset-backed securities	8,237		(94)		—		—		8,237		(94)
	$	30,715	$	(301)	$	38,544	$	(635)	$	69,259	$	(936)

Based on evaluation of marketable securities that have been in a continuous loss position, we did not recognize any other-than-temporary impairment charges during the three and nine months ended September 30, 2023 and 2022.

Fair Value Measurements

The following is a summary of our cash, cash equivalents and marketable securities measured at fair value on a recurring basis (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash	$	61,782	$	—	$	—	$	61,782	$	54,336	$	—	$	—	$	54,336
Cash equivalents	42,370		—		—		42,370		13,635		—		—		13,635

Corporate debt securities	—		36,717		—		36,717		—		34,587		—		34,587
U.S. Treasury and agency securities	—		27,188		—		27,188		—		28,335		—		28,335
Commercial paper	—		984		—		984		—		11,859		—		11,859
Asset-backed securities	—		—		—		—		—		8,237		—		8,237
Total	$	104,152	$	64,889	$	—	$	169,041	$	67,971	$	83,018	$	—	$	150,989

There were no transfers between Level 1 and Level 2 fair value measurement categories during the three and nine months ended September 30, 2023 and 2022.

4. Condensed Consolidated Financial Statement Details

Inventory

Inventory consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Raw materials	$	14,401	$	12,771
Finished goods	9,160		6,922
Total inventory	$	23,561	$	19,693

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Prepaid expenses	$	5,176	$	5,310
Deferred contract acquisition costs	6,198		6,144
Other	1,585		1,927
Total prepaid expenses and other current assets	$	12,959	$	13,381

Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):


	Useful Life	As of September 30, 2023		As of December 31, 2022
	(in years)
Equipment	1 - 5	$	30,739	$	27,028
Software(1)	1 - 6	2,981		2,537
Furniture and fixtures	1 - 7	500		503
Leasehold improvements	Lease term	3,233		3,267
Construction in process		13,110		9,152
Property and equipment, gross		50,563		42,487
Less: accumulated depreciation		(24,509)		(22,744)
Property and equipment, net		$	26,054	$	19,743

(1) Acquired software has a useful life of 1 to 3 years, while internally developed software to be sold, leased or marketed has a useful life of 6 years. Acquired software totaled $1.8 million and internally developed software totaled $1.2 million as of September 30, 2023. Acquired software totaled $1.1 million and internally developed software totaled $1.4 million as of December 31, 2022.

Construction in process primarily consists of deferred software development costs related to several projects that are expected to take longer than one year to complete. The first of these projects was available for release to customers in the fourth quarter of 2022. In the three months ended September 30, 2023, the Company recorded impairment expense of $3.0 million related to a long-term project that incurred delays and cost overruns. Fair value was determined using the present value of future revenue projections. Impairment expense was recorded to operating expense in the research and development function on the Company’s condensed consolidated statement of operations.

Depreciation expense on property and equipment was $1.4 million and $0.7 million for the three months ended September 30, 2023 and 2022, respectively, and was $3.3 million and $2.0 million for the nine months ended September 30, 2023 and 2022, respectively.

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Accrued compensation and benefits	$	8,138	$	19,832
Accrued tax liabilities	918		1,635
Lease liabilities	4,898		4,792
Other	9,623		10,924
Total accrued liabilities	$	23,577	$	37,183

Deferred Revenue

Deferred revenue consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Deferred revenue:
Products	$	12,999	$	7,782
Services	122,715		119,210
Total deferred revenue	135,714		126,992
Less: current portion	(79,540)		(74,340)
Non-current portion	$	56,174	$	52,652

5. Commitments and Contingencies

Lease Commitments

We lease various operating spaces in the United States, Asia and Europe under non-cancelable operating lease arrangements that expire on various dates through July 2027. These arrangements require us to pay certain operating expenses, such as taxes, repairs and insurance, and contain renewal and escalation clauses. We recognize rent expense under these arrangements on a straight-line basis over the term of the lease. See Note 2 – Leases for the Company’s aggregate future lease payments for the Company’s non-cancelable operating leases as of September 30, 2023.

Rent expense was $1.2 million for both of the three months ended September 30, 2023 and 2022, and was $3.7 million for both of the nine months ended September 30, 2023 and 2022.

Purchase Commitments

We have open purchase commitments with third-party contract manufacturers with facilities in Taiwan to supply nearly all of our finished goods inventories, spare parts, and accessories. These purchase orders are expected to be paid within one year of the issuance date. We had open purchase commitments with manufacturers in Taiwan totaling $18.2 million as of September 30, 2023.

Guarantees and Indemnifications

In the normal course of business, we provide indemnifications to customers against claims of intellectual property infringement made by third parties arising from the use of our products. Other guarantees or indemnification arrangements include guarantees of product and service performance, and standby letters of credit for lease facilities and corporate credit cards. We have not recorded a liability related to these indemnification and guarantee provisions and our guarantees and indemnification arrangements have not had any significant impact on our condensed consolidated financial statements to date.

6. Equity Incentive Plans, Stock-Based Compensation and Stock Repurchase Program

Equity Incentive Plans

2014 Equity Incentive Plan and 2023 Stock Incentive Plan

The 2014 Equity Incentive Plan (the “2014 Plan”) provided for the granting of stock options, restricted stock awards, restricted stock units (“RSUs”), performance-based RSUs (“PSUs”), stock appreciation rights, performance units and performance shares to our employees, consultants and members of our Board of Directors.

On April 26, 2023, the Company’s stockholders approved the A10 Networks, Inc. 2023 Stock Incentive Plan (the “2023 Plan”), which was approved by the Company’s Board of Directors on March 10, 2023. The 2023 Plan replaced the 2014 Plan and no further grants were made under the 2014 Plan after March 29, 2023. The 2023 Plan provides for the granting of stock options, restricted stock awards, restricted stock units (“RSUs”), performance-based RSUs (“PSUs”), stock appreciation rights, performance units and performance shares to our employees, consultants and members of our Board of Directors.

The shares authorized for issuance under the 2023 Plan is (x) 5,600,000 shares of common stock (the “Initial Reserve”), plus (y) the sum of any outstanding stock awards granted under the 2014 Plan that following March 29, 2023 which are either (i) not issued because such award or portion thereof is forfeited or terminated for any reason before being exercised or settled or (ii) subject to vesting restrictions and are subsequently forfeited, up to a maximum of 3,475,099 shares (the “2014 Returning Shares”). As of September 30, 2023, we had 4,724,521 shares available for future grant under the 2023 Plan.

2014 Employee Stock Purchase Plan

The 2014 Employee Stock Purchase Plan, as amended (the “Amended 2014 Purchase Plan”) provides employees with an opportunity to purchase our common stock through accumulated contributions, up to a maximum of 10% of eligible compensation, with offering periods of six months in duration, beginning on or about December 1 and June 1 each year. As of September 30, 2023, the Company had 968,943 shares available for future issuance under the Amended 2014 Purchase Plan.

Stock-Based Compensation

A summary of our stock-based compensation expense is as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Stock-based compensation by type of award:
Stock awards	$	3,701	$	3,168	$	10,349	$	8,803
Employee stock purchase rights	265		337		831		1,015
	$	3,966	$	3,505	$	11,180	$	9,818

Stock-based compensation by category of expense:
Cost of revenue	$	446	$	434	$	1,262	$	1,155
Sales and marketing	1,248		1,193		3,305		3,335
Research and development	896		826		2,533		2,455
General and administrative	1,376		1,052		4,080		2,873
	$	3,966	$	3,505	$	11,180	$	9,818

As of September 30, 2023, the Company had $36.2 million of unrecognized stock-based compensation expense related to unvested stock-based awards, including under our Amended 2014 Purchase Plan, which will be recognized over a weighted-average period of 2.72 years.

Stock Options

The following table summarizes our stock option activities and related information:


	Number of Shares (thousands)	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (thousands)
Outstanding as of December 31, 2022	279	$	6.59

Exercised	(162)	7.31

Outstanding as of September 30, 2023	117	5.59		1.09	$	1,103
Vested and exercisable as of September 30, 2023	117	$	5.59	1.09	$	1,103

As of September 30, 2023, the aggregate intrinsic value represents the excess of the closing price of our common stock of $15.03 over the exercise price of the outstanding in-the-money options.

The intrinsic value of options exercised was $0.3 million and $2.8 million during the three months ended September 30, 2023 and 2022, respectively and was $1.2 million and was $4.5 million during the nine months ended September 30, 2023 and 2022, respectively.

Stock Awards

The Company has granted RSUs to its employees, consultants and members of its Board of Directors, and PSUs to certain executives and employees. The Company’s PSUs have market performance-based vesting conditions as well as service-based vesting conditions. As of September 30, 2023, there were 2,546,588 RSUs and 754,442 PSUs outstanding.

The following table summarizes our stock award activities and related information:


	Number of Shares (thousands)	Weighted-Average Grant Date Fair Value Per Share		Weighted-Average Remaining Vesting Term (years)	Aggregate Fair Value (thousands)
Nonvested as of December 31, 2022	3,218	$	11.14
Granted	1,568	14.09
Released	(1,311)	9.80
Canceled	(174)	12.43
Nonvested as of September 30, 2023	3,301	$	13.00	1.97	$	49,614

The aggregate fair value of stock awards released was $8.4 million and $7.6 million for the three months ended September 30, 2023 and 2022, respectively, and was $12.8 million and $11.5 million for the nine months ended September 30, 2023 and 2022, respectively.

Stock Repurchase Programs

On October 28, 2021, the Company announced its Board of Directors authorized a stock repurchase program of up to $100 million of its common stock over a period of twelve months (the “2021 Program”). During the nine months ended September 30, 2022, the Company repurchased 6.1 million shares for a total cost of $79.3 million under the 2021 Program. This repurchase program was active for twelve months and expired in the second half of 2022.

On November 1, 2022, the Company announced its Board of Directors authorized a new stock repurchase program of up to $50 million of its common stock over a period of twelve months (the “2022 Program”). Through September 30, 2023, 605 thousand shares had been repurchased under the 2022 Program for a total cost of $8.7 million. This repurchase program was active for twelve months and expired in the second half of 2023.

On November 7, 2023, the Company announced its Board of Directors authorized a new stock repurchase program of up to $50 million of its common stock over a period of twelve months (the “2023 Program”).

Under the Company’s stock repurchase programs, repurchased shares are held in treasury at cost. The Company’s stock repurchase programs do not obligate it to acquire any specific number of shares. Shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Exchange Act.

7. Net Income Per Share

Basic net income per share is computed using the weighted average number of common shares outstanding for the period. Diluted net income per share applying the treasury stock method is computed using the weighted average number of common shares outstanding for the period plus potential dilutive common shares, including stock options, RSUs, PSUs and employee stock purchase rights, unless the potential common shares are anti-dilutive.

Basic and diluted net income per share are calculated as follows (in thousands, except per share amounts):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic and diluted net income per share
Numerator:
Net income	$	6,469	$	12,113	$	22,053	$	28,878
Denominator:
Weighted-average shares outstanding - basic	74,526		75,881		74,184		76,191
Effect of dilutive potential common shares from stock options, stock awards and employee stock purchase plan	1,281		1,798		1,455		2,263
Weighted-average shares outstanding - diluted	75,807		77,679		75,639		78,454
Net income per share:
Basic	$	0.09	$	0.16	$	0.30	$	0.38
Diluted	$	0.09	$	0.16	$	0.29	$	0.37

The following table presents common shares related to potentially dilutive shares excluded from the calculation of diluted net income per share as their effect would have been anti-dilutive (in thousands):


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options, restricted stock units and employee stock purchase rights	1	4	33	84

8. Income Taxes

We recorded an income tax benefit of $1.5 million and an income tax provision of $3.1 million for the three months ended September 30, 2023 and 2022, respectively. The Company’s income tax benefit in the three months ended September 30, 2023 was primarily related to a foreign-derived intangible income deduction. We recorded income tax provisions of $2.6 million and $7.5 million for the nine months ended September 30, 2023 and 2022, respectively. The Company’s income tax expense for the three months ended September 30, 2022 and nine months ended September 30, 2023 and 2022 primarily consisted of U.S. federal and state taxes.

We had $7.3 million of unrecognized tax benefits as of September 30, 2023. We do not anticipate a material change to our unrecognized tax benefits over the next twelve months. Unrecognized tax benefits may change during the next twelve months for items that arise in the ordinary course of business.

Accrued interest and penalties related to unrecognized tax benefits are recognized as part of our provision for income taxes in our condensed consolidated statements of operations.

We are subject to taxation in the United States, various states, and several foreign jurisdictions. Because we have net operating loss and credit carryforwards, there are open statutes of limitations in which federal, state and foreign taxing authorities may examine our tax returns for all years from 2005 through the current period. We are not currently under examination by any taxing authorities.

9. Geographic Information

We report customer revenues in three broad geographic regions: the Americas, APJ and EMEA regions. In the three months ended March 31, 2022, we changed the way we present revenue by geographic region. The Americas region comprises the United States and all other countries in the Americas (excluding the United States). The APJ region comprises Japan and all other countries in APAC (excluding Japan). We believe this vertical and revised geographic view aligns with how we manage the business and maps our product portfolio to customer verticals. This change in the way we report revenue had no impact to our key metrics including operations, comprehensive income and accumulated deficit.

The following table depicts the disaggregation of revenue by geographic region based on the ship to location of our customers and is consistent with how we evaluate our financial performance (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Americas	$	25,818	$	35,995	$	92,695	$	107,506
United States	23,777		29,219		79,738		92,149
Americas-other	2,041		6,776		12,957		15,357
APJ	21,196		24,860		58,938		64,263
APAC	6,964		9,487		22,001		23,700
Japan	14,232		15,373		36,937		40,563
EMEA	10,761		11,204		29,650		30,935
Total revenue	$	57,775	$	72,059	$	181,283	$	202,704

The following table is a summary of our long-lived assets which include property and equipment, net and operating lease right-of-use assets based on the physical location of the assets (in thousands):


	As of September 30, 2023		As of December 31, 2022
Americas	$	40,997	$	37,420
Japan	1,300		1,852

Other	1,346		1,668
Total	$	43,643	$	40,940

10. Revenue

Contract Balances

The following table reflects contract balances with customers (in thousands):


	As of September 30, 2023		As of December 31, 2022
Accounts receivable, net	$	59,070	$	72,928


Deferred revenue, current	79,540		74,340
Deferred revenue, non-current	56,174		52,652

We receive payments from customers based upon billing cycles. Invoice payment terms usually range from 30 to 90 days.

Accounts receivable are recorded when the right to consideration becomes unconditional.

Contract assets include amounts related to our contractual right to consideration for performance obligations not yet billed and are included in prepaid and other current assets in the condensed consolidated balance sheets. The amounts were immaterial as of September 30, 2023 and December 31, 2022.

Deferred revenue primarily consists of amounts that have been invoiced but not yet been recognized as revenue and consists of performance obligations pertaining to support and subscription services. We recognized revenue of $25.8 million and $20.3 million during the three months ended September 30, 2023 and 2022, respectively, related to deferred revenues at the beginning of the respective periods. We recognized revenue of $60.0 million and $59.5 million during the nine months ended September 30, 2023 and 2022, respectively, related to deferred revenues at the beginning of the respective periods.

Deferred Contract Acquisition Costs

We capitalize certain contract acquisition costs consisting of incremental sales commissions incurred to obtain customer contracts. Deferred commissions related to product revenues are recognized upon transfer of control to customers. Deferred commissions related to services revenue are recognized as the related performance obligations are met. Deferred commissions that will be recognized during the succeeding 12-month period are recorded as prepaid expenses and other current assets, and the remaining portion is recorded as other non-current assets. Amortization of deferred commissions is included in sales and marketing expense.

As of September 30, 2023, the current and non-current portions of deferred contract acquisition costs were $6.2 million and $4.3 million, respectively. As of December 31, 2022, the current and non-current portions of deferred contract acquisition costs were $6.1 million and $4.3 million, respectively. Related amortization expense was $2.0 million and $2.7 million for the three months ended September 30, 2023 and 2022, respectively, and was $4.6 million and $6.8 million for the nine months ended September 30, 2023 and 2022, respectively.

We had no impairment loss in relation to the costs capitalized and no asset impairment charges related to contract assets during the three and nine months ended September 30, 2023 and 2022.

Remaining Performance Obligations

Remaining performance obligations represent contracted revenues that are non-cancellable and have not yet been recognized due to unsatisfied or partially satisfied performance obligations, which include deferred revenues and amounts that will be invoiced and recognized as revenues in future periods.

We expect to recognize revenue on the remaining performance obligations as follows (in thousands):


		As of September 30, 2023

Within 1 year		$	79,540
Next 2 to 3 years		46,488
Thereafter		9,686
	Total	$	135,714

11. Subsequent Events

On November 7, 2023, the Company announced its Board of Directors declared a quarterly cash dividend. The dividend, in the amount of $0.06 per share outstanding, will be paid on December 1, 2023 to stockholders of record on November 17, 2023 as a return of capital. Future dividends will be subject to further review and approval by the Board in accordance with applicable law. The Board reserves the right to adjust or withdraw the quarterly dividend in future periods as it reviews the Company’s capital allocation strategy from time-to-time.

Also on November 7, 2023, the Company announced its Board of Directors authorized a new $50 million share repurchase program under which the Company may repurchase up to $50 million of its outstanding common stock during the next 12 months. Under the share repurchase program, the Company is authorized to repurchase shares of common stock in the

open market, privately negotiated transactions, in block trades or a combination of the foregoing. The Board will review the share repurchase program periodically and may authorize adjustment of its term and size. The Company plans to fund repurchases from its existing cash balance and cash provided by operating activities.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations (“MD&A”) should be read in conjunction with our condensed consolidated financial statements and related notes included elsewhere in this document. In addition to historical information, the MD&A contains forward-looking statements that reflect our plans, estimates, and beliefs that involve significant risks and uncertainties. Our actual results could differ materially from those discussed in the forward-looking statements. Factors that could cause or contribute to those differences include those discussed below and elsewhere in this Quarterly Report on Form 10-Q, particularly in “Note Regarding Forward-Looking Statements” and other risk factors contained in Part I, Item 1A “Risk Factors” in our 2022 Annual Report.

Overview

During the three months ended September 30, 2023, (i) 45% of our total revenue was generated from the Americas region, of which 41% was generated from the United States, (ii) 37% from the APJ region, of which 25% was generated from Japan, and (iii) 19% from the EMEA region. During the three months ended September 30, 2022, (i) 50% of our total revenue was generated from the Americas region, of which 41% was generated from the United States, (ii) 34% from the APJ region, of which 21% was generated from Japan, and (iii) 16% from the EMEA region. One of our priorities is to strengthen our sales efforts in North America. Our enterprise customers accounted for 50% and 38% of our total revenue during the three months ended September 30, 2023 and 2022, respectively, and our service provider customers accounted for 50% and 62% of our total revenue during the three months ended September 30, 2023 and 2022, respectively.

As a result of the nature of our target market and the current stage of our development, a substantial portion of our revenue comes from a limited number of large customers, including service providers and enterprise customers, in any period. Purchases by our ten largest end-customers accounted for 29% and 36% of our total revenue for the three months ended September 30, 2023 and 2022, respectively. Sales to these large end-customers have typically been characterized by large but irregular purchases with long sales cycles. The timing of these purchases and the delivery of the purchased products are difficult to predict. Consequently, any acceleration or delay in anticipated product purchases by or deliveries to our largest customers could materially impact our revenue and operating results in any quarterly period. This may cause our quarterly revenue and operating results to fluctuate from quarter to quarter and make them difficult to predict.

As of September 30, 2023, we had $104.2 million of cash and cash equivalents and $64.9 million of marketable securities. Cash provided by operating activities was $41.8 million during the nine months ended September 30, 2023, compared to $38.8 million in the same period of 2022.

We intend to continue to invest for long-term growth. We have invested and expect to continue to invest in our product development efforts to deliver new products and additional features in our current products to address customer needs. In addition, we may expand our global sales and marketing organizations, expand our distribution channel partner programs and increase awareness of our solutions on a global basis. Our investments in growth in these areas may affect our short-term profitability.

Results of Operations

A summary of our condensed consolidated statements of operations for the three and nine months ended September 30, 2023 and 2022 is as follows (dollars in thousands):


	Three Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Percent of Total Revenue		Amount		Percent of Total Revenue		Amount		Percent
Revenue:
Products	$	30,260	52.4	%	$	45,104	62.6	%	$	(14,844)	(32.9)	%
Services	27,515		47.6		26,955		37.4		560		2.1
Total revenue	57,775		100.0		72,059		100.0		(14,284)		(19.8)
Cost of revenue:
Products	6,815		11.8		10,191		14.1		(3,376)		(33.1)
Services	4,194		7.3		4,574		6.3		(380)		(8.3)
Total cost of revenue	11,009		19.1		14,765		20.5		(3,756)		(25.4)
Gross profit	46,766		80.9		57,294		79.5		(10,528)		(18.4)
Operating expenses:
Sales and marketing	21,324		36.9		21,605		30.0		(281)		(1.3)
Research and development	17,620		30.5		14,360		19.9		3,260		22.7
General and administrative	5,613		9.7		5,661		7.9		(48)		(0.8)
Total operating expenses	44,557		77.1		41,626		57.8		2,931		7.0
Income from operations	2,209		3.8		15,668		21.7		(13,459)		(85.9)
Non-operating income (expense), net:
Interest income	1,766		3.1		432		0.6		1,334		308.8
Other income (expense), net	987		1.7		(871)		(1.2)		1,858		(213.3)
Non-operating income (expense), net	2,753		4.8		(439)		(0.6)		3,192		(727.1)
Income before provision for (benefit from) income taxes	4,962		8.6		15,229		21.1		(10,267)		(67.4)
Income tax provision (benefit)	(1,507)		(2.6)		3,116		4.3		(4,623)		(148.4)
Net income	$	6,469	11.2	%	$	12,113	16.8	%	$	(5,644)	(46.6)	%


	Nine Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Percent of Total Revenue		Amount		Percent of Total Revenue		Amount		Percent
Revenue:
Products	$	100,532	55.5	%	$	123,624	61.0	%	$	(23,092)	(18.7)	%
Services	80,751		44.5		79,080		39.0		1,671		2.1
Total revenue	181,283		100.0		202,704		100.0		(21,421)		(10.6)
Cost of revenue:
Products	22,334		12.3		28,342		14.0		(6,008)		(21.2)
Services	12,354		6.8		12,747		6.3		(393)		(3.1)
Total cost of revenue	34,688		19.1		41,089		20.3		(6,401)		(15.6)
Gross profit	146,595		80.9		161,615		79.7		(15,020)		(9.3)
Operating expenses:
Sales and marketing	64,526		35.6		66,159		32.6		(1,633)		(2.5)
Research and development	43,250		23.9		41,483		20.5		1,767		4.3
General and administrative	18,177		10.0		17,160		8.5		1,017		5.9
Total operating expenses	125,953		69.5		124,802		61.6		1,151		0.9
Income from operations	20,642		11.4		36,813		18.2		(16,171)		(43.9)
Non-operating income (expense), net:
Interest income	3,401		1.9		736		0.4		2,665		362.1
Other income (expense), net	653		0.4		(1,204)		(0.6)		1,857		(154.2)
Non-operating income (expense), net	4,054		2.2		(468)		(0.2)		4,522		(966.2)
Income before provision for (benefit from) income taxes	24,696		13.6		36,345		17.9		(11,649)		(32.1)
Provision for (benefit from) income taxes	2,643		1.5		7,467		3.7		(4,824)		(64.6)
Net income	$	22,053	12.2	%	$	28,878	14.2	%	$	(6,825)	(23.6)	%

Revenue

Our products revenue primarily consists of revenue from sales of our hardware appliances upon which our software is installed. Such software includes our ACOS software platform plus one or more of our ADC, CGN, TPS, SSLi or CFW solutions. Purchase of a hardware appliance includes a perpetual license to the included software. Additionally, an immaterial portion of our products revenue comes from subscription revenue. We offer several products by subscription, primarily through either term-based license agreements or as a service through our cloud-based platform. With respect to sales of our hardware appliances, we recognize products revenue upon transfer of control, generally at the time of shipment, provided that all other revenue recognition criteria have been met. Revenue for term-based license agreements is recognized at a point in time when we deliver the software license to the customer and the subscription term has commenced. For our software-as-a-service offerings, our customers do not take possession of our software but rather we provide access to the service via a hosting arrangement. Revenue in these arrangements is recognized ratably as the services are provided. As a percentage of revenue, our products revenue may vary from quarter to quarter based on, among other things, the timing of orders and delivery of products, cyclicality and seasonality, changes in currency exchange rates and the impact of significant transactions with unique terms and conditions.

We generate services revenue from sales of post contract support (“PCS”), which is bundled with sales of products and technical services. We offer tiered PCS services under renewable, fee-based PCS contracts, primarily including technical

support, hardware repair and replacement parts, and software upgrades on a when-and-if-available basis. We recognize services revenue ratably over the term of the PCS contract, which is typically one year, but can be up to seven years.

A summary of our total revenue is as follows (dollars in thousands):


	Three Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Percent of Total Revenue		Amount		Percent of Total Revenue		Amount		Percent
Revenue:
Products	$	30,260	52	%	$	45,104	63	%	$	(14,844)	(33)	%
Services	27,515		48		26,955		37		560		2	%
Total revenue	$	57,775	100	%	$	72,059	100	%	$	(14,284)	(20)	%
Revenue by geographic region:
Americas	$	25,818	45	%	$	35,995	50	%	$	(10,177)	(28)	%
United States	23,777		41	%	29,219		41	%	(5,442)		(19)	%
Americas-other	2,041		4	%	6,776		9	%	(4,735)		(70)	%
APJ	21,196		37	%	24,860		34	%	(3,664)		(15)	%
APAC	6,964		12	%	9,487		13	%	(2,523)		(27)	%
Japan	14,232		25	%	15,373		21	%	(1,141)		(7)	%
EMEA	10,761		18	%	11,204		16	%	(443)		(4)	%
Total revenue	$	57,775	100	%	$	72,059	100	%	$	(14,284)	(20)	%


	Nine Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Percent of Total Revenue		Amount		Percent of Total Revenue		Amount		Percent
Revenue:
Products	$	100,532	55	%	$	123,624	61	%	$	(23,092)	(19)	%
Services	80,751		45		79,080		39		1,671		2	%
Total revenue	$	181,283	100	%	$	202,704	100	%	$	(21,421)	(11)	%
Revenue by geographic region:
Americas	$	92,695	51	%	$	107,506	53	%	$	(14,811)	(14)	%
United States	79,738		44	%	92,149		45	%	(12,411)		(13)	%
Americas-other	12,957		7	%	15,357		8	%	(2,400)		(16)	%
APJ	58,938		33	%	64,263		32	%	(5,325)		(8)	%
APAC	22,001		12	%	23,700		12	%	(1,699)		(7)	%
Japan	36,937		20	%	40,563		20	%	(3,626)		(9)	%
EMEA	29,650		16	%	30,935		15	%	(1,285)		(4)	%
Total revenue	$	181,283	100	%	$	202,704	100	%	$	(21,421)	(11)	%

Three Months Ended September 30, 2023 and 2022

Total revenue decreased $14.3 million, or 20%, during the three months ended September 30, 2023, compared to the same period of 2022. Changes in revenue were due primarily to (i) a $10.2 million decrease in the Americas region, comprised of a decrease in the United States of $5.4 million and a decrease in Americas-other of $4.7 million, (ii) a $3.7 million decrease in the APJ region, comprised of a decrease in APAC of $2.5 million and a decrease in Japan of $1.1 million and (iii) a $0.4

million decrease in the EMEA region. The overall decrease in revenue was attributable to a $16.2 million decrease in revenue from service provider customers, partially offset by a $1.9 million increase in revenue from enterprise customers during the three months ended September 30, 2023 compared to the same period of 2022.

Products revenue decreased $14.8 million, or 33%, during the three months ended September 30, 2023 compared to the same period of 2022, as a result of a decrease in demand from our service provider customers worldwide, but primarily in the Americas regions.

Services revenue increased $0.6 million, or 2%, during the three months ended September 30, 2023, compared to the same periods of 2022, primarily attributable to an increase in PCS sales as a result of our growing installed customer base, especially in our Americas region.

During the three months ended September 30, 2023, $25.8 million, or 45% of total revenue, was generated from the Americas region, which represents a 28% decrease in revenue compared to the same period of 2022. The decrease was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

During the three months ended September 30, 2023, $21.2 million, or 37% of total revenue, was generated from the APJ region, which represents a 2% decrease compared to the same period of 2022. The increase was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

During the three months ended September 30, 2023, $10.8 million, or 18% of total revenue, was generated from the EMEA region, which represents a 4% decrease compared to the same period of 2022. The decrease was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

Nine Months Ended September 30, 2023 and 2022

Total revenue decreased $21.4 million, or 11%, during the nine months ended September 30, 2023, compared to the same period of 2022. Changes in revenue were due primarily to (i) a $14.8 million decrease in the Americas region, comprised of a decrease in the United States of $12.4 million and a decrease in Americas-other of $2.4 million, (ii) a $5.3 million decrease in the APJ region, comprised of a decrease in APAC of $1.7 million and a decrease in Japan of $3.6 million and (iii) a $1.3 million decrease in the EMEA region. The overall decrease in revenue was attributable to a $24.3 million decrease in revenue from service provider customers, partially offset by a $2.9 million increase in revenue from enterprise customers during the nine months ended September 30, 2023 compared to the same period of 2022.

Products revenue decreased $23.1 million, or 19%, during the nine months ended September 30, 2023 compared to the same period of 2022, primarily attributable to a decrease in demand from our service provider customers in the Americas regions.

Services revenue increased $1.7 million, or 2%, during the nine months ended September 30, 2023, compared to the same periods of 2022, primarily attributable to an increase in PCS sales as a result of our growing installed customer base, especially in our Americas region.

During the nine months ended September 30, 2023, $92.7 million, or 51% of total revenue, was generated from the Americas region, which represents a 14% decrease in revenue compared to the same period of 2022. The decrease was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

During the nine months ended September 30, 2023, $58.9 million, or 33% of total revenue, was generated from the APJ region, which represents an 8% decrease compared to the same period of 2022. The decrease was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

During the nine months ended September 30, 2023, $29.7 million, or 16% of total revenue, was generated from the EMEA region, which represents a 4% decrease compared to the same period of 2022. The decrease was primarily due to lower products revenue due to a decrease in demand from our service provider customers.

Cost of Revenue, Gross Profit and Gross Margin

Cost of Revenue

Cost of products revenue is primarily comprised of cost of third-party manufacturing services and cost of inventory for the hardware component of our products. Cost of products revenue also includes warehouse personnel costs, shipping costs, inventory write-downs, certain allocated facilities and information technology infrastructure costs, and expenses associated with logistics and quality control.

Cost of services revenue is primarily comprised of personnel costs for our technical support and training teams. Cost of services revenue also includes the costs of inventory used to provide hardware replacements to end- customers under PCS contracts and certain allocated facilities and information technology infrastructure costs.

A summary of our cost of revenue is as follows (dollars in thousands):


	Three Months Ended September 30,				Increase (Decrease)
	2023		2022		Amount		Percent
Cost of revenue:
Products	$	6,815	$	10,191	$	(3,376)	(33.1)	%
Services	4,194		4,574		(380)		(8.3)
Total cost of revenue	$	11,009	$	14,765	$	(3,756)	(25.4)	%


	Nine Months Ended September 30,				Increase (Decrease)
	2023		2022		Amount		Percent
Cost of revenue:
Products	$	22,334	$	28,342	$	(6,008)	(21.2)	%
Services	12,354		12,747		(393)		(3.1)
Total cost of revenue	$	34,688	$	41,089	$	(6,401)	(15.6)	%

Products cost of revenue decreased 33.1% and 21.2% during the three and nine months ended September 30, 2023, respectively, compared to the same periods of 2022, primarily driven by geographic mix and product mix.

Services cost of revenue decreased 8.3% and 3.1% during the three and nine months ended September 30, 2023, respectively, compared to the same periods of 2022, primarily driven by the mix of services delivered, which include technical support, training and service costs.

Gross Margin

Gross margin may vary and be unpredictable from period to period due to a variety of factors. These may include the mix of revenue from each of our regions, the mix of our products sold within a period, discounts provided to customers, inventory write-downs and foreign currency exchange rates.

Our sales are generally denominated in U.S. Dollars; however, in Japan, our sales are denominated in Japanese Yen.

Any of the factors noted above can generate either a favorable or unfavorable impact on gross margin.

A summary of our gross profit and gross margin is as follows (dollars in thousands):


	Three Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Gross Margin		Amount		Gross Margin		Amount		Gross Margin
Gross profit:
Products	$	23,445	77.5	%	$	34,913	77.4	%	$	(11,468)	0.1	%
Services	23,321		84.8		22,381		83.0		940		1.8
Total gross profit	$	46,766	80.9	%	$	57,294	79.5	%	$	(10,528)	1.4	%


	Nine Months Ended September 30,
	2023				2022				Increase (Decrease)
	Amount		Gross Margin		Amount		Gross Margin		Amount		Gross Margin
Gross profit:
Products	$	78,198	77.8	%	$	95,282	77.1	%	$	(17,084)	0.7	%
Services	68,397		84.7		66,333		83.9		2,064		0.8
Total gross profit	$	146,595	80.9	%	$	161,615	79.7	%	$	(15,020)	1.2	%

Products gross margin increased 0.1% during the three months ended September 30, 2023 compared to the same period of 2022. Products gross margin increased 0.7% during the nine months ended September 30, 2023 compared to the same period of 2022, primarily driven by geographic mix and product mix.

Services gross margin increased 1.8% and increased 0.8% during the three and nine months ended September 30, 2023, respectively, compared to the same periods of 2022, primarily driven by the mix of services delivered, which include technical support, training and service costs.

Operating Expenses

Our operating expenses consist of sales and marketing, research and development and general and administrative expenses. The largest component of our operating expenses is personnel costs which consist of wages, benefits, bonuses and, with respect to sales and marketing expenses, sales commissions. Personnel costs also include stock-based compensation.

In 2023 we undertook expense management initiatives resulting in reduced employee headcount, primarily in sales and marketing and research and development, and recorded corresponding severance expense of $2.4 million and $4.3 million in the three and nine months ended September 30, 2023, respectively.

A summary of our operating expenses is as follows (dollars in thousands):


	Three Months Ended September 30,				Increase (Decrease)
	2023		2022		Amount		Percent
Operating expenses:
Sales and marketing	$	21,324	$	21,605	$	(281)	(1.3)	%
Research and development	17,620		14,360		3,260		22.7
General and administrative	5,613		5,661		(48)		(0.8)
Total operating expenses	$	44,557	$	41,626	$	2,931	7.0	%


	Nine Months Ended September 30,				Increase (Decrease)
	2023		2022		Amount		Percent
Operating expenses:
Sales and marketing	$	64,526	$	66,159	$	(1,633)	(2.5)	%
Research and development	43,250		41,483		1,767		4.3
General and administrative	18,177		17,160		1,017		5.9
Total operating expenses	$	125,953	$	124,802	$	1,151	0.9	%

Sales and Marketing

Sales and marketing expenses are our largest functional category of operating expenses and primarily consist of personnel costs. Sales and marketing expenses also include the cost of marketing programs, trade shows, consulting services, promotional materials, demonstration equipment, depreciation and certain allocated facilities and information technology infrastructure costs.

Sales and marketing operating expenses decreased $0.3 million, or 1.3%, in the three months ended September 30, 2023, compared to the same period in 2022, and decreased $1.6 million, or 2.5%, in the nine months ended September 30, 2023, compared to the same period in 2022, primarily due to a decrease in personnel costs.

In 2023, we expect sales and marketing expenses to decrease slightly from 2022 levels as we apply a disciplined approach to focus our investments in areas that offer the greatest opportunities.

Research and Development

Research and development efforts are focused on new product development and on developing additional functionality for our existing products. These expenses primarily consist of personnel costs, and, to a lesser extent, prototype materials, depreciation and certain allocated facilities and information technology infrastructure costs. We expense research and development costs as incurred. We also defer and capitalize software development costs related to several projects that are expected to take longer than one year to complete.

Research and development operating expenses increased $3.3 million, or 22.7%, in the three months ended September 30, 2023, compared to the same period in 2022, and increased $1.8 million, or 4.3%, in the nine months ended

September 30, 2023, compared to the same period in 2022, primarily due to an impairment of an internally developed software product.

In 2023, we expect research and development expenses to increase from 2022 levels reflecting strategic investments in our growth priorities, including cybersecurity technology.

General and Administrative

General and administrative expenses primarily consist of personnel costs, professional services and office expenses. General and administrative personnel costs include executive, finance, human resources, information technology, facility and legal related expenses. Professional services primarily consist of fees for outside accounting, tax, external legal counsel (including litigation), recruiting and other administrative services.

General and administrative operating expenses decreased less than $0.1 million, or 0.8%, in the three months ended September 30, 2023, compared to the same period in 2022, primarily due to a decrease in contractor costs. General and administrative operating expenses increased $1.0 million, or 5.9%, in the nine months ended September 30, 2023, compared to the same period in 2022, primarily due to an increase in personnel costs due to an increase in headcount.

In 2023, we expect general and administrative expenses to be about the same as compared to 2022 as we apply a disciplined approach to focus our investments in areas that offer the greatest opportunities.

Non-Operating Income (Expense), Net

Non-Operating income (expense), net, consists primarily of foreign currency exchange gains and losses, partially offset by interest income earned on our cash and cash equivalents and marketable securities.

Non-operating income (expense), net, had a favorable change of $3.2 million for the three months ended September 30, 2023, compared to the same period of 2022, and had a favorable change of $4.5 million for the nine months ended September 30, 2023, compared to the same period of 2022. The favorable change for the three and nine months ended September 30, 2023 was primarily driven by a favorable change in foreign exchange gains and losses. Foreign currency exchange gains and losses are primarily as a result of fluctuations in the Japanese Yen versus the U.S. Dollar. Interest income increased $1.3 million for the three months ended September 30, 2023, compared to the same period of 2022, and increased $2.7 million for the nine months ended September 30, 2023, compared to the same period of 2022.

Income Tax Provision (Benefit)

We recorded an income tax benefit of $1.5 million and an income tax provision of $3.1 million for the three and nine months ended September 30, 2023 and 2022, respectively. The Company’s income tax benefit in the three months ended September 30, 2023 was primarily related to a foreign-derived intangible income deduction. We recorded income tax provisions of $2.6 million and $7.5 million for the nine months ended September 30, 2023 and 2022, respectively. The Company’s income tax expense for the three months ended September 30, 2022 and nine months ended September 30, 2023 and 2022 primarily consisted of U.S. federal and state taxes.

Liquidity and Capital Resources

As of September 30, 2023, we had cash and cash equivalents of $104.2 million, including $3.0 million held outside the United States in our foreign subsidiaries, and $64.9 million of marketable securities. We currently do not have any plans to repatriate our earnings from our foreign operations. As of September 30, 2023, we had working capital of $153.3 million, accumulated deficit of $108.4 million and total stockholders’ equity of $196.9 million. Our marketable securities are highly liquid and are classified as available for sale should the Company decide to quickly raise cash at any time in the future.

We plan to continue to invest for long-term growth, and our investment may increase. We believe that our existing cash and cash equivalents and marketable securities will be sufficient to meet our anticipated cash needs for at least the next 12 months and beyond. Our future capital requirements will depend on many factors, including our growth rate, the expansion of sales and marketing activities, the timing and extent of spending to support development efforts, the introduction of new and enhanced product and service offerings and the continuing market acceptance of our products. In the event that additional financing is required from outside sources, we may not be able to raise such financing on terms acceptable to us or at all. If we

are unable to raise additional capital when desired, our business, operating results and financial condition could be adversely affected.

On October 28, 2021, the Company announced its Board of Directors authorized a stock repurchase program of up to $100 million of its common stock over a period of twelve months (the “2021 Program”). During the three months ended September 30, 2022, the Company repurchased 3.7 million shares for a total cost of $47.5 million under the 2021 Program. During the nine months ended September 30, 2022, the company repurchased 6.1 million shares for a total cost of $79.3 million. This repurchase program was active for twelve months and expired in the second half of 2022.

On November 1, 2022, the Company announced its Board of Directors authorized a new stock repurchase program (the “2022 Program”) of up to $50 million of its common stock over a period of twelve months. During the three months ended September 30, 2023, the Company repurchased 0.2 million shares for a total cost of $2.4 million. During the nine months ended September 30, 2023, the Company repurchased 604,752 shares for a total cost of $8.7 million. This repurchase program was active for twelve months and expired in the second half of 2023.

Under all programs, repurchased shares are held in treasury at cost. The Company’s stock repurchase programs do not obligate us to acquire any specific number of shares. Shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Exchange Act.

In October 2021, our Board approved the initiation of a regular quarterly cash dividend on our common stock. In the three months ended September 30, 2022, the Company paid a cash dividend of $0.05 per share outstanding, for a total of $3.8 million as a return of capital. In the three months ended September 30, 2023, the Company paid a cash dividend of $0.06 per share outstanding, for a total of $4.5 million as a return of capital. The next dividend, in the amount of $0.06 per share, will be paid on December 1, 2023 to stockholders of record on November 17, 2023 as a return of capital. We currently anticipate that we will continue to pay comparable quarterly cash dividends in the future. However, the payment, amount and timing of future dividends remain within the discretion of our Board and will depend upon our results of operations, financial condition, cash requirements, and other factors.

As described in Part II – Item 1, “Legal Proceedings” of this Quarterly Report on Form 10-Q, from time to time we are involved in ongoing litigation. Any adverse settlements or judgments in any litigation could have a material adverse impact on our results of operations, cash balances and cash flows in the period in which such events occur.

Statements of Cash Flows

The following table summarizes our cash flow related activities (in thousands):


	Nine Months Ended September 30,
	2023		2022
Cash provided by (used in):
Operating activities	$	41,783	$	38,773
Investing activities	13,443		540
Financing activities	(19,045)		(86,107)
Net increase (decrease) in cash and cash equivalents	$	36,181	$	(46,794)

Cash Flows from Operating Activities

Our cash provided by operating activities is driven primarily by sales of our products and management of working capital investments. Our primary uses of cash from operating activities have been for personnel-related expenditures, manufacturing costs, marketing and promotional expenses and costs related to our facilities. Our cash flows from operating activities will continue to be affected principally by the extent to which we increase spending on our business and our working capital requirements.

During the nine months ended September 30, 2023, cash provided by operating activities was $41.8 million, consisting of net income of $22.1 million and non-cash charges of $18.8 million and an increase in cash resulting from the net change in operating assets and liabilities of $0.9 million. Our non-cash charges consisted primarily of depreciation and amortization

expenses of $6.8 million and stock-based compensation expense of $11.2 million. The net change in our operating assets and liabilities primarily reflects cash inflows from the changes in accrued receivable of $14.1 million, deferred revenue of $8.7 million and prepaid expenses and other assets of $2.0 million, partially offset by cash outflows from changes in accrued liabilities of $17.4 million, inventory of $5.3 million and accounts payable of $1.2 million.

The favorable change in accounts receivable was attributed to timing of billing and cash collections. The favorable change in deferred revenue was attributed to the timing of service contract bookings. The favorable change in prepaid expenses and other assets was primarily due to the release and return of a security deposit. The unfavorable change in accrued liabilities was attributed to cash bonus and commission accruals. The unfavorable change in inventory was attributable to product shipments. The unfavorable change in accounts payable was attributable to the timing of payments to vendors.

During the nine months ended September 30, 2022, cash provided by operating activities was $38.8 million, consisting of net income of $28.9 million and non-cash charges of $15.4 million, partially offset by a decrease in cash resulting from the net change in operating assets and liabilities of $5.5 million. Our non-cash charges consisted primarily of depreciation and amortization expenses of $5.5 million and stock-based compensation expense of $9.8 million. The net change in our operating assets and liabilities primarily reflects cash outflows from the changes in accounts receivable of $11.1 million and prepaid expenses and other current assets of $2.6 million and accounts payable of $0.9 million, partially offset by cash inflows from changes in deferred revenue of $4.5 million, accrued liabilities of $4.0 million and inventory of $0.5 million.

The unfavorable change in accounts receivable was attributed to timing of billing and cash collections. The unfavorable change in prepaid expenses and other current assets was primarily due to a net increase in deferred commissions payable. The unfavorable change in accounts payable was attributable to the timing of payments to vendors. The favorable change in deferred revenue was attributable to the timing of service contract bookings. The favorable change in accrued liabilities was attributed to cash bonus and commission accruals and the favorable change in inventory was attributable to product shipments made in the nine months ended September 30, 2022.

Cash Flows from Investing Activities

During the nine months ended September 30, 2023, cash provided by investing activities was $13.4 million, consisting of sales and maturities of marketable securities of $96.3 million, partially offset by purchases of marketable securities of $75.1 million and property and equipment of $7.8 million.

During the nine months ended September 30, 2022, cash provided by investing activities was $0.5 million, consisting of maturities and sales of marketable securities of $48.2 million and $6.3 million, respectively, partially offset by purchases of marketable securities of $45.7 million and property and equipment of $8.3 million.

Cash Flows from Financing Activities

During the nine months ended September 30, 2023, cash used in financing activities was $19.0 million and primarily consisting of $13.4 million used for cash dividend payments and $8.7 million used for the repurchase of common stock, partially offset by $3.0 million of proceeds from common stock issued under the Company’s equity plans.

During the nine months ended September 30, 2022, cash used in financing activities was $86.1 million and primarily consisting of $79.3 million of cash used to repurchase stock under the Company’s stock repurchase program and $11.5 million used for cash dividend payments, partially offset by $4.7 million of proceeds from common stock issued under the Company’s equity plans.

Contractual Obligations

Our contractual obligations consist of non-cancellable operating lease arrangements and totaled $19.0 million as of September 30, 2023. Our operating lease arrangements expire on various dates through July 2027. These arrangements require us to pay certain operating expenses, such as taxes, repairs and insurance, and contain renewal and escalation clauses.

The Company also has $7.3 million of tax liabilities related to uncertain tax positions as of September 30, 2023. We are unable to make a reasonably reliable estimate of the timing of settlement, if any, of these future payments.

Critical Accounting Policies and Estimates

Our condensed consolidated financial statements are prepared in accordance with U.S. GAAP. The preparation of these condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosures. We evaluate our estimates and assumptions on an ongoing basis. Our estimates are based on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Our actual results could differ from these estimates.

The Company’s significant accounting policies are disclosed in Part II – Item 8, “Financial Statements and Supplementary Data” of the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on February 27, 2023. There have been no material changes to the Company’s significant accounting policies during the nine months ended September 30, 2023.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Foreign Currency Risk

Our condensed consolidated results of operations, financial position and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. Historically, the majority of our revenue contracts are denominated in U.S. Dollars, with the most significant exception being Japan where we invoice primarily in Japanese Yen. Our costs and expenses are generally denominated in the currencies where our operations are located, which is primarily in the Americas, EMEA and, to a lesser extent, Japan and the Asia Pacific region. We have a hedging program with respect to foreign currency risk. Revenue resulting from selling in local currencies and costs and expenses incurred in local currencies are exposed to foreign currency exchange rate fluctuations, which can affect our revenue and operating income. As exchange rates vary, operating income may differ from expectations.

The functional currency of our foreign subsidiaries is the U.S. Dollar. At the end of each reporting period, monetary assets and liabilities are remeasured to the functional currency using exchange rates in effect at the balance sheet date. Non-monetary assets and liabilities are remeasured at historical exchange rates. Gains and losses related to remeasurement are recorded in interest and other income, net in the condensed consolidated statements of operations. A significant fluctuation in the exchange rates between our subsidiaries’ local currencies, especially the Japanese Yen, British Pound and Euro, and the U.S. Dollar could have an adverse impact on our condensed consolidated financial position and results of operations.

We recorded $0.9 million of net foreign exchange gains in both the three months ended September 30, 2023 and 2022. We recorded $0.8 million of net foreign exchange gains during the nine months ended September 30, 2023 and we recorded $1.0 million of net foreign exchange losses during the nine months ended September 30, 2022. The effect of a hypothetical 10% change in our exchange rate would not have a significant impact on our condensed consolidated results of operations.

Interest Rate Sensitivity

Our exposure to market risk for changes in interest rates relates primarily to our marketable securities. Our marketable securities are comprised of corporate securities, U.S. Treasury and agency securities, commercial paper and asset-backed securities. We do not enter into investments for trading or speculative purposes. As of September 30, 2023, our investment portfolio included marketable securities with an aggregate amortized cost basis of $65.0 million and a fair value of $64.9 million. The effect of a hypothetical 10% change in interest rates would not have had a material impact on our interest expense.

The following table presents the hypothetical fair values of our marketable securities assuming immediate parallel shifts in the yield curve of 50 basis points (“BPS”), 100 BPS and 150 BPS as of September 30, 2023 (in thousands):


							Fair Value as of
	(150 BPS)		(100 BPS)		(50 BPS)		9/30/2023		50 BPS		100 BPS		150 BPS
Marketable securities	$	65,446	$	65,260	$	65,075	$	64,889	$	64,703	$	64,516	$	64,330

ITEM 4. CONTROLS AND PROCEDURES

Management’s Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer (our principal executive officer) and Chief Financial Officer (our principal financial officer), has evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2023, as required by Rule 13a-15(b) under the Securities Exchange Act of 1934, or the Exchange Act. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by the company in the reports that it files or submits to the SEC, 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 a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and financial officers, as appropriate to enable timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures, our management recognizes that any disclosure controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that our management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Our Chief Executive Officer and Chief Financial Officer, as our principal executive officer and principal financial officer, respectively, concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of September 30, 2023, and that the condensed consolidated financial statements included in this Form 10-Q present fairly, in all material respects, and in conformity with U.S. GAAP, our financial position, results of operations and cash flows for the periods presented.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting during the three months ended September 30, 2023, which were identified in connection with management’s evaluation required by paragraph (d) of Rules 13a-15 and 15d-15 under the Exchange Act, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls

Our management, including our principal executive officer and our principal financial officer, does not expect that our disclosure controls or our internal control over financial reporting will prevent or detect all error 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. 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 the effectiveness of controls 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.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We have been and may currently be involved in various legal proceedings, the outcomes of which are not within our complete control or may not be known for prolonged periods of time. Management is required to assess the probability of loss and amount of such loss, if any, in preparing our condensed consolidated financial statements. We evaluate the likelihood of a potential loss from legal proceedings to which we are a party. We record a liability for such claims when a loss is deemed probable and the amount can be reasonably estimated. Significant judgment may be required in the determination of both probability and whether an exposure is reasonably estimable. Our judgments are subjective based on the status of the legal proceedings, the merits of our defenses and consultation with in-house and outside legal counsel. As additional information becomes available, we reassess the potential liability related to pending claims and may revise our estimates. Due to the inherent uncertainties of the legal processes in the multiple jurisdictions in which we operate, our judgments may be materially different than the actual outcomes, which could have material adverse effects on our business, financial conditions and results of operations.

ITEM 1A. RISK FACTORS

Investing in our common stock involves a high degree of risk. You should carefully review and consider the information regarding certain factors that could materially affect our business, financial condition or future results set forth under Part I, Item 1A "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2022. There have been no material changes to the risk factors disclosed in our 2022 Annual Report on Form 10-K.

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

On November 1, 2022, we announced that our Board of Directors authorized a $50 million share repurchase program (the “2022 Program”) under which we may repurchase up to $50 million of our outstanding common stock during the next 12 months. This repurchase program was active for twelve months and expired in the second half of 2023.

Under the Company’s share repurchase programs, we may repurchase shares of common stock in the open market, privately negotiated transactions, in block trades or a combination of the foregoing. We are not obligated under the share repurchase program to repurchase any specific number or dollar amount of shares of common stock, and we may modify, suspend or discontinue the share repurchase program at any time. Our management and Board will determine the timing and amount of any repurchase in its discretion based on a variety of factors, such as the market price of our common stock, corporate requirements, general market economic conditions and legal requirements. The Company plans to fund repurchases from its existing cash balance and cash provided by operating activities.

Share repurchase activity during the three months ended September 30, 2023 was as follows (in thousands, except per share amounts):


Periods	Total Number of Shares Purchased		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs (1)
July 1 - 31, 2023		—	$	—	—	$	43,771

August 1 - 31, 2023		97	$	14.42	97	$	42,370

September 1 - 30, 2023		71	$	14.66	71	$	41,328

Total		168				$	41,328

(1) The $41,328 thousand in the table above represents the amount available to repurchase shares under the authorized repurchase program as of September 30, 2022. The Company’s active stock repurchase program (the “2022 Program”) does not obligate it to acquire any specific number of shares. Under the 2022 Program, shares may be repurchased in privately negotiated and/or open market transactions.

ITEM 5. OTHER INFORMATION

On October 4, 2023, the trading plan of Dhrupad Trivedi, the Company’s President and Chief Executive Officer, dated June 12, 2023, intended to satisfy Rule 10b5-1(c) to sell up to 60,606 shares of Company common stock between November 7, 2023 and November 9, 2023, subject to certain conditions, terminated, under which no shares were ultimately sold.

ITEM 6. EXHIBITS

Incorporated herein by reference is a list of the exhibits contained in the Exhibit Index below.

EXHIBIT INDEX


Exhibit Number						Description
3.1						Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on December 6, 2019)
3.2						Amended and Restated Bylaws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K filed on December 6, 2019)
31.1*						Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act
31.2*						Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act
32.1**						Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act
32.2**						Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act
101*						Inline XBRL Document Set for the condensed consolidated financial statements and accompanying notes in Part I – Item 1, “Condensed Consolidated Financial Statements (Unaudited)” of this Quarterly Report on Form 10-Q
104*						Inline XBRL for the cover page of this Quarterly Report on Form 10-Q, included in the Exhibit 101 Inline XBRL Document Set

* Filed herewith.

** The certifications attached as Exhibit 32.1 and 32.2 that accompany this Quarterly Report on Form 10-Q are not deemed filed with the Securities and Exchange Commission and are not to be incorporated by reference into any filing of A10 Networks, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Quarterly Report on Form 10-Q, irrespective of any general incorporation language contained in such filing.

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.


			A10 NETWORKS, INC.

Date: November 7, 2023


			By: /s/ Dhrupad Trivedi
			Dhrupad Trivedi
			President and Chief Executive Officer (Principal Executive Officer)

Date: November 7, 2023


			By: /s/ Brian Becker
			Brian Becker
			Chief Financial Officer (Principal Accounting and Financial Officer)

Exhibit 31.1

CERTIFICATION

I, Dhrupad Trivedi, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of A10 Networks, Inc.;

2.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;

3.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;

4.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

5.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 7, 2023	By: /s/ Dhrupad Trivedi
		Dhrupad Trivedi
		President and Chief Executive Officer

Exhibit 31.2

CERTIFICATION

I, Brian Becker, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of A10 Networks, Inc.;

(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 7, 2023	By: /s/ Brian Becker
		Brian Becker
		Chief Financial Officer
		(Principal Accounting and Financial 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 the Quarterly Report on Form 10-Q of A10 Networks, Inc. (the “Company”) for the three months ended September 30, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dhrupad Trivedi, President and Chief Executive Officer of the Company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

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


Date:	November 7, 2023	By: /s/ Dhrupad Trivedi
		Dhrupad Trivedi
		President and Chief Executive Officer

Exhibit 32.2

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 the Quarterly Report on Form 10-Q of A10 Networks, Inc. (the “Company”) for the three months ended September 30, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian Becker, Chief Financial Officer of the Company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

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


Date:	November 7, 2023	By: /s/ Brian Becker
		Brian Becker
		Chief Financial Officer
		(Principal Accounting and Financial Officer)

Cover Page - shares	9 Months Ended
Cover Page - shares	Sep. 30, 2023	Nov. 02, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-36343
Entity Registrant Name	A10 NETWORKS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1446869
Entity Address, Address Line One	2300 Orchard Parkway
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95131
City Area Code	408
Local Phone Number	325-8668
Title of 12(b) Security	Common Stock, $0.00001 par value
Trading Symbol	ATEN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		74,138,224
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001580808
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 104,152	$ 67,971
Marketable securities	64,889	83,018
Accounts receivable, net of allowances of $197 and $32, respectively	59,070	72,928
Inventory	23,561	19,693
Prepaid expenses and other current assets	12,959	13,381
Total current assets	264,631	256,991
Property and equipment, net	26,054	19,743
Goodwill	1,307	1,307
Deferred tax assets, net	61,088	63,183
Other non-current assets	24,762	27,881
Total assets	377,842	369,105
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	8,214	6,725
Accrued liabilities	23,577	37,183
Deferred revenue	79,540	74,340
Total current liabilities	111,331	118,248
Deferred revenue, non-current	56,174	52,652
Other non-current liabilities	13,415	17,193
Total liabilities	180,920	188,093
Commitments and contingencies (Note 2 and Note 5)
Stockholders' equity:
Common stock, $0.00001 par value: 500,000 shares authorized; 88,739 and 87,123 shares issued and 74,750 and 73,738 shares outstanding, respectively	1	1
Treasury stock, at cost: 13,989 and 13,384 shares, respectively	(143,606)	(134,934)
Additional paid-in-capital	481,765	466,927
Dividends paid	(33,171)	(19,802)
Accumulated other comprehensive income (loss)	334	(726)
Accumulated deficit	(108,401)	(130,454)
Total stockholders' equity	196,922	181,012
Total liabilities and stockholders' equity	$ 377,842	$ 369,105

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 197	$ 32
Common Stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	88,739,000	87,123,000
Common stock, shares outstanding (in shares)	74,750,000	73,738,000
Treasury Stock, Common, Shares	13,989,000	13,384,000

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue:
Total revenue	$ 57,775	$ 72,059	$ 181,283	$ 202,704
Cost of revenue:
Total cost of revenue	11,009	14,765	34,688	41,089
Gross profit	46,766	57,294	146,595	161,615
Operating expenses:
Sales and marketing	21,324	21,605	64,526	66,159
Research and development	17,620	14,360	43,250	41,483
General and administrative	5,613	5,661	18,177	17,160
Total operating expenses	44,557	41,626	125,953	124,802
Income from operations	2,209	15,668	20,642	36,813
Non-operating income (expense), net:
Other income (expense), net	1,766	432	3,401	736
Other Nonoperating Income (Expense)	987	(871)	653	(1,204)
Non-operating income (expense), net	2,753	(439)	4,054	(468)
Income (Loss) Attributable to Parent, before Tax	4,962	15,229	24,696	36,345
Income tax provision (benefit)	(1,507)	3,116	2,643	7,467
Net income	$ 6,469	$ 12,113	$ 22,053	$ 28,878
Net income per share:
Basic	$ 0.09	$ 0.16	$ 0.30	$ 0.38
Diluted	$ 0.09	$ 0.16	$ 0.29	$ 0.37
Weighted-average shares used in computing net income per share:
Basic	74,526	75,881	74,184	76,191
Diluted	75,807	77,679	75,639	78,454
Products
Revenue:
Total revenue	$ 30,260	$ 45,104	$ 100,532	$ 123,624
Cost of revenue:
Total cost of revenue	6,815	10,191	22,334	28,342
Services
Revenue:
Total revenue	27,515	26,955	80,751	79,080
Cost of revenue:
Total cost of revenue	$ 4,194	$ 4,574	$ 12,354	$ 12,747

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 6,469	$ 12,113	$ 22,053	$ 28,878
Other comprehensive income (expense), net of tax:
Realized loss reclassified to earnings	0	0	(265)	0
Unrealized gain (loss) on marketable securities	(177)	(135)	1,208	(1,112)
Unrealized gain (loss) on cash flow hedge	(31)	0	117	0
Comprehensive income	$ 6,261	$ 11,978	$ 23,113	$ 27,766

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Dividends Declared	Treasury Stock, Common
Beginning balance at Dec. 31, 2021	$ 208,888	$ 1	$ 446,035	$ (229)	$ (177,362)	$ (3,880)	$ (55,677)
Beginning balance (in shares) at Dec. 31, 2021		77,423
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee equity incentive plans (in shares)		2,073
Common stock issued under employee equity incentive plans	0		4,662
Unrealized gain (loss) on marketable securities	(1,112)			(1,112)
Net income	28,878				28,878
Unrealized gain (loss) on cash flow hedge	0
Ending balance (in shares) at Sep. 30, 2022		73,406
Ending balance at Sep. 30, 2022	160,734	$ 1	460,884	(1,341)	(148,484)	(15,392)	$ (134,934)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends, Common Stock, Cash						(11,512)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition			10,187
Stock Repurchased During Period, Value	$ (79,257)
Treasury Stock, Shares, Acquired	(6,100)						(6,090)
Realized loss reclassified to earnings	$ 0
Beginning balance at Jun. 30, 2022	194,759	$ 1	455,539	(1,206)	(160,597)	(11,543)	$ (87,435)
Beginning balance (in shares) at Jun. 30, 2022		75,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee equity incentive plans (in shares)		1,164
Common stock issued under employee equity incentive plans	0		1,691
Unrealized gain (loss) on marketable securities	(135)			(135)
Net income	12,113				12,113
Unrealized gain (loss) on cash flow hedge	0
Ending balance (in shares) at Sep. 30, 2022		73,406
Ending balance at Sep. 30, 2022	160,734	$ 1	460,884	(1,341)	(148,484)	(15,392)	$ (134,934)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends, Common Stock, Cash						(3,849)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition			3,654
Stock Repurchased During Period, Value	(47,499)
Treasury Stock, Shares, Acquired							(3,720)
Realized loss reclassified to earnings	0
Beginning balance at Dec. 31, 2022	181,012	$ 1	466,927	(726)	(130,454)	(19,802)	$ (134,934)
Beginning balance (in shares) at Dec. 31, 2022		73,738
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee equity incentive plans (in shares)		1,616
Common stock issued under employee equity incentive plans	0		2,996
Unrealized gain (loss) on marketable securities	1,208			1,208
Net income	22,053				22,053
Unrealized gain (loss) on cash flow hedge	117
Ending balance (in shares) at Sep. 30, 2023		74,750
Ending balance at Sep. 30, 2023	196,922	$ 1	481,765	334	(108,401)	(33,171)	$ (143,606)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends, Common Stock, Cash						(13,369)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition			11,842
Stock Repurchased During Period, Value	$ (8,672)
Treasury Stock, Shares, Acquired	(605)						(604)
Realized loss reclassified to earnings	$ (265)
Beginning balance at Jun. 30, 2023	192,939	$ 1	477,111	542	(114,870)	(28,682)	$ (141,164)
Beginning balance (in shares) at Jun. 30, 2023		74,083
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee equity incentive plans (in shares)		835
Common stock issued under employee equity incentive plans	0		437
Unrealized gain (loss) on marketable securities	(177)			(177)
Net income	6,469				6,469
Unrealized gain (loss) on cash flow hedge	(31)
Ending balance (in shares) at Sep. 30, 2023		74,750
Ending balance at Sep. 30, 2023	196,922	$ 1	481,765	$ 334	$ (108,401)	(33,171)	$ (143,606)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends, Common Stock, Cash						$ (4,489)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition			$ 4,217
Stock Repurchased During Period, Value	(2,442)
Treasury Stock, Shares, Acquired							(168)
Realized loss reclassified to earnings	$ 0

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 22,053	$ 28,878
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,845	5,539
Stock-based compensation	11,180	9,818
Other non-cash items	774	49
Changes in operating assets and liabilities:
Accounts receivable	14,056	(11,090)
Inventory	(5,313)	530
Prepaid expenses and other assets	2,033	(2,574)
Accounts payable	(1,183)	(914)
Accrued liabilities	(17,384)	4,001
Deferred revenue	8,722	4,536
Net cash provided by operating activities	41,783	38,773
Cash flows from investing activities:
Proceeds from sales of marketable securities	42,252	6,252
Proceeds from maturities of marketable securities	54,007	48,248
Purchases of marketable securities	(75,064)	(45,699)
Purchases of property and equipment	(7,752)	(8,261)
Net cash provided by investing activities	13,443	540
Cash flows from financing activities:
Proceeds from issuance of common stock under employee equity incentive plans	2,996	4,662
Repurchase of common stock	(8,672)	(79,257)
Payments for dividends	(13,369)	(11,512)
Net cash used in financing activities	(19,045)	(86,107)
Net increase (decrease) in cash and cash equivalents	36,181	(46,794)
Cash and cash equivalents—beginning of period	67,971	78,925
Cash and cash equivalents—end of period	104,152	32,131
Non-cash investing and financing activities:
Transfers between inventory and property and equipment	1,445	642
Purchases of property and equipment included in accounts payable	$ 2,672	$ 108

Description of Business and Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Significant Accounting Policies

Description of Business and Summary of Significant Accounting Policies

Description of Business

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include those of A10 Networks, Inc. and its subsidiaries after elimination of all intercompany accounts and transactions.

These financial statements and accompanying notes should be read in conjunction with the financial statements and accompanying notes thereto in the 2022 Annual Report.

Use of Estimates

Significant Accounting Policies

Concentration of Credit Risk and Significant Customers

Revenues from our significant customers as a percentage of our total revenue are as follows:


	Three Months Ended September 30,		Nine Months Ended September 30,
Customers	2023	2022	2023	2022
Customer A (an end-customer)	*	10%	15%	10%
Customer B (an end-customer)	*	*	*	13%

* represents less than 10% of total revenue

Recently Adopted Accounting Pronouncements

Leases

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Leases

The table below presents the Company’s right-of-use assets and lease liabilities as of September 30, 2023 (in thousands):


		As of September 30, 2023
Operating leases
Right-of-use assets:
	Other non-current assets	$	17,589
Total right-of-use assets		$	17,589

Lease liabilities:
	Accrued liabilities	$	4,898
	Other non-current liabilities	13,063
Total operating lease liabilities		$	17,961

The aggregate future lease payments for non-cancelable operating leases as of September 30, 2023 were as follows (in thousands):


Remainder of 2023	$	1,347
2024	5,421
2025	4,948
2026	4,892
2027	2,441
Thereafter	—
Total lease payments	19,049
Less: imputed interest	(1,088)
Present value of lease liabilities	$	17,961

The components of lease costs were as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Operating lease costs	$	1,087	$	1,085	$	3,291	$	3,248
Short-term lease costs	129		126		378		417
Total lease costs	$	1,216	$	1,211	$	3,669	$	3,665

Average lease terms and discount rates for the Company’s operating leases were as follows:


						Three Months Ended September 30, 2023
Weighted-average remaining term (years)						3.61
Weighted-average discount rate						3.19%

Supplemental cash flow information for the Company’s operating leases were as follows (in thousands):


		Three Months Ended September 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from operating leases	$	3,972
	Right-of-use assets obtained in exchange for new lease liabilities	$	—

Marketable Securities and Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Marketable Securities and Fair Value Measurements

Marketable Securities

Marketable securities, classified as available-for-sale, consisted of the following (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value

Corporate debt securities	$	36,782	$	9	$	(74)	$	36,717	$	35,137	$	—	$	(550)	$	34,587
U.S. Treasury and agency securities	27,257		1		(70)		27,188		28,627		—		(292)		28,335
Commercial paper	950		34		—		984		11,859		—		—		11,859
Asset-backed securities	—		—		—		—		8,331		—		(94)		8,237
Total	$	64,989	$	44	$	(144)	$	64,889	$	83,954	$	—	$	(936)	$	83,018

The following table summarizes the cost and estimated fair value of marketable securities based on stated effective maturities as of September 30, 2023 (in thousands):


As of September 30, 2023	Amortized Cost		Fair Value
Mature in less than 1 year	$	63,089	$	63,003
Mature in 1 - 3 years	1,900		1,886
Total	$	64,989	$	64,889

All available-for-sale securities have been classified as current because they are available for use in current operations.

Marketable securities in an unrealized loss position as of September 30, 2023 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of September 30, 2023	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	33,829	$	(74)	$	—	$	—	$	33,829	$	(74)
U.S. Treasury and agency securities	14,662		(70)		—		—		14,662		(70)

	$	48,491	$	(144)	$	—	$	—	$	48,491	$	(144)

Marketable securities in an unrealized loss position as of December 31, 2022 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of December 31, 2022	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	7,610	$	(162)	$	26,977	$	(388)	$	34,587	$	(550)
U.S. Treasury and agency securities	14,868		(45)		11,567		(247)		26,435		(292)
Asset-backed securities	8,237		(94)		—		—		8,237		(94)
	$	30,715	$	(301)	$	38,544	$	(635)	$	69,259	$	(936)

Fair Value Measurements

The following is a summary of our cash, cash equivalents and marketable securities measured at fair value on a recurring basis (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash	$	61,782	$	—	$	—	$	61,782	$	54,336	$	—	$	—	$	54,336
Cash equivalents	42,370		—		—		42,370		13,635		—		—		13,635

Corporate debt securities	—		36,717		—		36,717		—		34,587		—		34,587
U.S. Treasury and agency securities	—		27,188		—		27,188		—		28,335		—		28,335
Commercial paper	—		984		—		984		—		11,859		—		11,859
Asset-backed securities	—		—		—		—		—		8,237		—		8,237
Total	$	104,152	$	64,889	$	—	$	169,041	$	67,971	$	83,018	$	—	$	150,989

There were no transfers between Level 1 and Level 2 fair value measurement categories during the three and nine months ended September 30, 2023 and 2022.

Condensed Consolidated Financial Statement Details

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment [Abstract]

Condensed Consolidated Financial Statement Details

Inventory

Inventory consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Raw materials	$	14,401	$	12,771
Finished goods	9,160		6,922
Total inventory	$	23,561	$	19,693

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Prepaid expenses	$	5,176	$	5,310
Deferred contract acquisition costs	6,198		6,144
Other	1,585		1,927
Total prepaid expenses and other current assets	$	12,959	$	13,381

Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):


	Useful Life	As of September 30, 2023		As of December 31, 2022
	(in years)
Equipment	1 - 5	$	30,739	$	27,028
Software(1)	1 - 6	2,981		2,537
Furniture and fixtures	1 - 7	500		503
Leasehold improvements	Lease term	3,233		3,267
Construction in process		13,110		9,152
Property and equipment, gross		50,563		42,487
Less: accumulated depreciation		(24,509)		(22,744)
Property and equipment, net		$	26,054	$	19,743

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Accrued compensation and benefits	$	8,138	$	19,832
Accrued tax liabilities	918		1,635
Lease liabilities	4,898		4,792
Other	9,623		10,924
Total accrued liabilities	$	23,577	$	37,183

Deferred Revenue

Deferred revenue consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Deferred revenue:
Products	$	12,999	$	7,782
Services	122,715		119,210
Total deferred revenue	135,714		126,992
Less: current portion	(79,540)		(74,340)
Non-current portion	$	56,174	$	52,652

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Lease Commitments We lease various operating spaces in the United States, Asia and Europe under non-cancelable operating lease arrangements that expire on various dates through July 2027. These arrangements require us to pay certain operating expenses, such as taxes, repairs and insurance, and contain renewal and escalation clauses. We recognize rent expense under these arrangements on a straight-line basis over the term of the lease. See Note 2 – Leases for the Company’s aggregate future lease payments for the Company’s non-cancelable operating leases as of September 30, 2023. Rent expense was $1.2 million for both of the three months ended September 30, 2023 and 2022, and was $3.7 million for both of the nine months ended September 30, 2023 and 2022. Purchase Commitments We have open purchase commitments with third-party contract manufacturers with facilities in Taiwan to supply nearly all of our finished goods inventories, spare parts, and accessories. These purchase orders are expected to be paid within one year of the issuance date. We had open purchase commitments with manufacturers in Taiwan totaling $18.2 million as of September 30, 2023. Guarantees and Indemnifications In the normal course of business, we provide indemnifications to customers against claims of intellectual property infringement made by third parties arising from the use of our products. Other guarantees or indemnification arrangements include guarantees of product and service performance, and standby letters of credit for lease facilities and corporate credit cards. We have not recorded a liability related to these indemnification and guarantee provisions and our guarantees and indemnification arrangements have not had any significant impact on our condensed consolidated financial statements to date.

Equity Incentive Plans and Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Equity Incentive Plans and Stock-Based Compensation

Equity Incentive Plans, Stock-Based Compensation and Stock Repurchase Program

Equity Incentive Plans

2014 Equity Incentive Plan and 2023 Stock Incentive Plan

2014 Employee Stock Purchase Plan

Stock-Based Compensation

A summary of our stock-based compensation expense is as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Stock-based compensation by type of award:
Stock awards	$	3,701	$	3,168	$	10,349	$	8,803
Employee stock purchase rights	265		337		831		1,015
	$	3,966	$	3,505	$	11,180	$	9,818

Stock-based compensation by category of expense:
Cost of revenue	$	446	$	434	$	1,262	$	1,155
Sales and marketing	1,248		1,193		3,305		3,335
Research and development	896		826		2,533		2,455
General and administrative	1,376		1,052		4,080		2,873
	$	3,966	$	3,505	$	11,180	$	9,818

Stock Options

The following table summarizes our stock option activities and related information:


	Number of Shares (thousands)	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (thousands)
Outstanding as of December 31, 2022	279	$	6.59

Exercised	(162)	7.31

Outstanding as of September 30, 2023	117	5.59		1.09	$	1,103
Vested and exercisable as of September 30, 2023	117	$	5.59	1.09	$	1,103

As of September 30, 2023, the aggregate intrinsic value represents the excess of the closing price of our common stock of $15.03 over the exercise price of the outstanding in-the-money options.

Stock Awards

The following table summarizes our stock award activities and related information:


	Number of Shares (thousands)	Weighted-Average Grant Date Fair Value Per Share		Weighted-Average Remaining Vesting Term (years)	Aggregate Fair Value (thousands)
Nonvested as of December 31, 2022	3,218	$	11.14
Granted	1,568	14.09
Released	(1,311)	9.80
Canceled	(174)	12.43
Nonvested as of September 30, 2023	3,301	$	13.00	1.97	$	49,614

Stock Repurchase Programs

Net Income Per Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Net Income Per Share

Basic and diluted net income per share are calculated as follows (in thousands, except per share amounts):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic and diluted net income per share
Numerator:
Net income	$	6,469	$	12,113	$	22,053	$	28,878
Denominator:
Weighted-average shares outstanding - basic	74,526		75,881		74,184		76,191
Effect of dilutive potential common shares from stock options, stock awards and employee stock purchase plan	1,281		1,798		1,455		2,263
Weighted-average shares outstanding - diluted	75,807		77,679		75,639		78,454
Net income per share:
Basic	$	0.09	$	0.16	$	0.30	$	0.38
Diluted	$	0.09	$	0.16	$	0.29	$	0.37


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options, restricted stock units and employee stock purchase rights	1	4	33	84

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We recorded an income tax benefit of $1.5 million and an income tax provision of $3.1 million for the three months ended September 30, 2023 and 2022, respectively. The Company’s income tax benefit in the three months ended September 30, 2023 was primarily related to a foreign-derived intangible income deduction. We recorded income tax provisions of $2.6 million and $7.5 million for the nine months ended September 30, 2023 and 2022, respectively. The Company’s income tax expense for the three months ended September 30, 2022 and nine months ended September 30, 2023 and 2022 primarily consisted of U.S. federal and state taxes. We had $7.3 million of unrecognized tax benefits as of September 30, 2023. We do not anticipate a material change to our unrecognized tax benefits over the next twelve months. Unrecognized tax benefits may change during the next twelve months for items that arise in the ordinary course of business. Accrued interest and penalties related to unrecognized tax benefits are recognized as part of our provision for income taxes in our condensed consolidated statements of operations. We are subject to taxation in the United States, various states, and several foreign jurisdictions. Because we have net operating loss and credit carryforwards, there are open statutes of limitations in which federal, state and foreign taxing authorities may examine our tax returns for all years from 2005 through the current period. We are not currently under examination by any taxing authorities.

Geographic Information

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Geographic Information


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Americas	$	25,818	$	35,995	$	92,695	$	107,506
United States	23,777		29,219		79,738		92,149
Americas-other	2,041		6,776		12,957		15,357
APJ	21,196		24,860		58,938		64,263
APAC	6,964		9,487		22,001		23,700
Japan	14,232		15,373		36,937		40,563
EMEA	10,761		11,204		29,650		30,935
Total revenue	$	57,775	$	72,059	$	181,283	$	202,704


	As of September 30, 2023		As of December 31, 2022
Americas	$	40,997	$	37,420
Japan	1,300		1,852

Other	1,346		1,668
Total	$	43,643	$	40,940

Revenue Revenue

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Revenue

Contract Balances

The following table reflects contract balances with customers (in thousands):


	As of September 30, 2023		As of December 31, 2022
Accounts receivable, net	$	59,070	$	72,928


Deferred revenue, current	79,540		74,340
Deferred revenue, non-current	56,174		52,652

We receive payments from customers based upon billing cycles. Invoice payment terms usually range from 30 to 90 days.

Accounts receivable are recorded when the right to consideration becomes unconditional.

Deferred Contract Acquisition Costs

We had no impairment loss in relation to the costs capitalized and no asset impairment charges related to contract assets during the three and nine months ended September 30, 2023 and 2022.

Remaining Performance Obligations

We expect to recognize revenue on the remaining performance obligations as follows (in thousands):


		As of September 30, 2023

Within 1 year		$	79,540
Next 2 to 3 years		46,488
Thereafter		9,686
	Total	$	135,714

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On November 7, 2023, the Company announced its Board of Directors declared a quarterly cash dividend. The dividend, in the amount of $0.06 per share outstanding, will be paid on December 1, 2023 to stockholders of record on November 17, 2023 as a return of capital. Future dividends will be subject to further review and approval by the Board in accordance with applicable law. The Board reserves the right to adjust or withdraw the quarterly dividend in future periods as it reviews the Company’s capital allocation strategy from time-to-time. Also on November 7, 2023, the Company announced its Board of Directors authorized a new $50 million share repurchase program under which the Company may repurchase up to $50 million of its outstanding common stock during the next 12 months. Under the share repurchase program, the Company is authorized to repurchase shares of common stock in the open market, privately negotiated transactions, in block trades or a combination of the foregoing. The Board will review the share repurchase program periodically and may authorize adjustment of its term and size. The Company plans to fund repurchases from its existing cash balance and cash provided by operating activities.

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 6,469	$ 12,113	$ 22,053	$ 28,878

Insider Trading Arrangements	3 Months Ended	9 Months Ended
Insider Trading Arrangements	Sep. 30, 2023 shares	Sep. 30, 2023 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On October 4, 2023, the trading plan of Dhrupad Trivedi, the Company’s President and Chief Executive Officer, dated June 12, 2023, intended to satisfy Rule 10b5-1(c) to sell up to 60,606 shares of Company common stock between November 7, 2023 and November 9, 2023, subject to certain conditions, terminated, under which no shares were ultimately sold.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Terminated	false
Dhrupad Trivedi [Member]
Trading Arrangements, by Individual
Name	Dhrupad Trivedi
Title	President and Chief Executive Officer
Adoption Date	June 12, 2023
Rule 10b5-1 Arrangement Terminated	true
Termination Date	October 4, 2023
Aggregate Available	60,606	60,606

Description of Business and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements include those of A10 Networks, Inc. and its subsidiaries after elimination of all intercompany accounts and transactions. We have prepared the accompanying unaudited condensed consolidated financial statements pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC” or the “Commission”). As permitted under these rules and regulations, we have condensed or omitted certain financial information and footnote disclosures we normally include in our annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The unaudited condensed consolidated balance sheet as of December 31, 2022 has been derived from our audited financial statements, which are included in our 2022 Annual Report on Form 10-K for the year ended December 31, 2022 on file with the SEC (the “2022 Annual Report”). These financial statements have been prepared on the same basis as our annual financial statements and, in management’s opinion, reflect all adjustments consisting only of normal recurring adjustments that are necessary for a fair presentation of our financial information. Our interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year. These financial statements and accompanying notes should be read in conjunction with the financial statements and accompanying notes thereto in the 2022 Annual Report.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Those estimates and assumptions affect revenue recognition and deferred revenue, the allowance for doubtful accounts, the sales return reserve, the valuation of inventory, the fair value of marketable securities, contingencies and litigation, accrued liabilities, deferred commissions and the determination of fair value of stock-based compensation. These estimates are based on information available as of the date of the condensed consolidated financial statements.
Concentration of Credit Risk and Significant Customers	Concentration of Credit Risk and Significant Customers Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, marketable securities and accounts receivable. Our cash, cash equivalents and marketable securities are held and invested in high credit quality financial instruments by recognized financial institutions and are subject to minimum credit risk. Our accounts receivables are unsecured and represent amounts due to us based on contractual obligations of our customers. We mitigate credit risk in respect to accounts receivable by performing periodic credit evaluations based on a number of factors, including past transaction experience, evaluation of credit history and review of the invoicing terms of the contract. We generally do not require our customers to provide collateral to support accounts receivable. Significant customers, including distribution channel partners and direct customers (end-customers), are those which represent 10% or more of our total revenue for each period presented or our gross accounts receivable balance as of each respective balance sheet date.
Recently Adopted Accounting Guidance/Recent Accounting Pronouncements Not Yet Effective	Recently Adopted Accounting Pronouncements The Company’s recently adopted accounting pronouncements are disclosed in Note 1 Description of Business and Summary of Significant Accounting Policies of the notes to consolidated financial statements included in Part II – Item 8 of the 2022 Annual Report. The Company has not adopted any accounting pronouncements during the three and nine months ended September 30, 2023.
Deferred Contract Acquisition Costs	Deferred Contract Acquisition Costs We capitalize certain contract acquisition costs consisting of incremental sales commissions incurred to obtain customer contracts. Deferred commissions related to product revenues are recognized upon transfer of control to customers. Deferred commissions related to services revenue are recognized as the related performance obligations are met. Deferred commissions that will be recognized during the succeeding 12-month period are recorded as prepaid expenses and other current assets, and the remaining portion is recorded as other non-current assets. Amortization of deferred commissions is included in sales and marketing expense.

Description of Business and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Revenue as Percentage of Total Revenue


	Three Months Ended September 30,		Nine Months Ended September 30,
Customers	2023	2022	2023	2022
Customer A (an end-customer)	*	10%	15%	10%
Customer B (an end-customer)	*	*	*	13%

* represents less than 10% of total revenue

Leases (Tables)

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Assets And Liabilities,

The table below presents the Company’s right-of-use assets and lease liabilities as of September 30, 2023 (in thousands):


		As of September 30, 2023
Operating leases
Right-of-use assets:
	Other non-current assets	$	17,589
Total right-of-use assets		$	17,589

Lease liabilities:
	Accrued liabilities	$	4,898
	Other non-current liabilities	13,063
Total operating lease liabilities		$	17,961

Lease Payments

The aggregate future lease payments for non-cancelable operating leases as of September 30, 2023 were as follows (in thousands):


Remainder of 2023	$	1,347
2024	5,421
2025	4,948
2026	4,892
2027	2,441
Thereafter	—
Total lease payments	19,049
Less: imputed interest	(1,088)
Present value of lease liabilities	$	17,961

Lease Costs


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Operating lease costs	$	1,087	$	1,085	$	3,291	$	3,248
Short-term lease costs	129		126		378		417
Total lease costs	$	1,216	$	1,211	$	3,669	$	3,665

Average lease terms and discount rates for the Company’s operating leases were as follows:


						Three Months Ended September 30, 2023
Weighted-average remaining term (years)						3.61
Weighted-average discount rate						3.19%

Supplemental cash flow information for the Company’s operating leases were as follows (in thousands):


		Three Months Ended September 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from operating leases	$	3,972
	Right-of-use assets obtained in exchange for new lease liabilities	$	—

Marketable Securities and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Available-for-sale securities

Marketable securities, classified as available-for-sale, consisted of the following (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value

Corporate debt securities	$	36,782	$	9	$	(74)	$	36,717	$	35,137	$	—	$	(550)	$	34,587
U.S. Treasury and agency securities	27,257		1		(70)		27,188		28,627		—		(292)		28,335
Commercial paper	950		34		—		984		11,859		—		—		11,859
Asset-backed securities	—		—		—		—		8,331		—		(94)		8,237
Total	$	64,989	$	44	$	(144)	$	64,889	$	83,954	$	—	$	(936)	$	83,018

Schedule of Cost and Estimated Fair Values of Available-for-sale Securities by Contractual Maturity

The following table summarizes the cost and estimated fair value of marketable securities based on stated effective maturities as of September 30, 2023 (in thousands):


As of September 30, 2023	Amortized Cost		Fair Value
Mature in less than 1 year	$	63,089	$	63,003
Mature in 1 - 3 years	1,900		1,886
Total	$	64,989	$	64,889

Schedule of gross unrealized losses

Marketable securities in an unrealized loss position as of September 30, 2023 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of September 30, 2023	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	33,829	$	(74)	$	—	$	—	$	33,829	$	(74)
U.S. Treasury and agency securities	14,662		(70)		—		—		14,662		(70)

	$	48,491	$	(144)	$	—	$	—	$	48,491	$	(144)

Marketable securities in an unrealized loss position as of December 31, 2022 consisted of the following (in thousands):


	Less Than 12 Months				12 Months or More				Total
As of December 31, 2022	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
Corporate debt securities	$	7,610	$	(162)	$	26,977	$	(388)	$	34,587	$	(550)
U.S. Treasury and agency securities	14,868		(45)		11,567		(247)		26,435		(292)
Asset-backed securities	8,237		(94)		—		—		8,237		(94)
	$	30,715	$	(301)	$	38,544	$	(635)	$	69,259	$	(936)

Schedule of Cash, Cash Equivalents and Available-for-sale Investments Measured at Fair Value on Recurring Basis

The following is a summary of our cash, cash equivalents and marketable securities measured at fair value on a recurring basis (in thousands):


	As of September 30, 2023								As of December 31, 2022
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash	$	61,782	$	—	$	—	$	61,782	$	54,336	$	—	$	—	$	54,336
Cash equivalents	42,370		—		—		42,370		13,635		—		—		13,635

Corporate debt securities	—		36,717		—		36,717		—		34,587		—		34,587
U.S. Treasury and agency securities	—		27,188		—		27,188		—		28,335		—		28,335
Commercial paper	—		984		—		984		—		11,859		—		11,859
Asset-backed securities	—		—		—		—		—		8,237		—		8,237
Total	$	104,152	$	64,889	$	—	$	169,041	$	67,971	$	83,018	$	—	$	150,989

Condensed Consolidated Financial Statement Details (Tables)

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment [Abstract]

Schedule of Inventory

Inventory consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Raw materials	$	14,401	$	12,771
Finished goods	9,160		6,922
Total inventory	$	23,561	$	19,693

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Prepaid expenses	$	5,176	$	5,310
Deferred contract acquisition costs	6,198		6,144
Other	1,585		1,927
Total prepaid expenses and other current assets	$	12,959	$	13,381

Schedule of Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):


	Useful Life	As of September 30, 2023		As of December 31, 2022
	(in years)
Equipment	1 - 5	$	30,739	$	27,028
Software(1)	1 - 6	2,981		2,537
Furniture and fixtures	1 - 7	500		503
Leasehold improvements	Lease term	3,233		3,267
Construction in process		13,110		9,152
Property and equipment, gross		50,563		42,487
Less: accumulated depreciation		(24,509)		(22,744)
Property and equipment, net		$	26,054	$	19,743

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Accrued compensation and benefits	$	8,138	$	19,832
Accrued tax liabilities	918		1,635
Lease liabilities	4,898		4,792
Other	9,623		10,924
Total accrued liabilities	$	23,577	$	37,183

Schedule of Deferred Revenue

Deferred revenue consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Deferred revenue:
Products	$	12,999	$	7,782
Services	122,715		119,210
Total deferred revenue	135,714		126,992
Less: current portion	(79,540)		(74,340)
Non-current portion	$	56,174	$	52,652

The following table reflects contract balances with customers (in thousands):


	As of September 30, 2023		As of December 31, 2022
Accounts receivable, net	$	59,070	$	72,928


Deferred revenue, current	79,540		74,340
Deferred revenue, non-current	56,174		52,652

Equity Incentive Plans and Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock-based Compensation

A summary of our stock-based compensation expense is as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Stock-based compensation by type of award:
Stock awards	$	3,701	$	3,168	$	10,349	$	8,803
Employee stock purchase rights	265		337		831		1,015
	$	3,966	$	3,505	$	11,180	$	9,818

Stock-based compensation by category of expense:
Cost of revenue	$	446	$	434	$	1,262	$	1,155
Sales and marketing	1,248		1,193		3,305		3,335
Research and development	896		826		2,533		2,455
General and administrative	1,376		1,052		4,080		2,873
	$	3,966	$	3,505	$	11,180	$	9,818

Summary of Activity under Stock Option Plans

The following table summarizes our stock option activities and related information:


	Number of Shares (thousands)	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (thousands)
Outstanding as of December 31, 2022	279	$	6.59

Exercised	(162)	7.31

Outstanding as of September 30, 2023	117	5.59		1.09	$	1,103
Vested and exercisable as of September 30, 2023	117	$	5.59	1.09	$	1,103

Summary of Restricted Stock Units Activity

The following table summarizes our stock award activities and related information:


	Number of Shares (thousands)	Weighted-Average Grant Date Fair Value Per Share		Weighted-Average Remaining Vesting Term (years)	Aggregate Fair Value (thousands)
Nonvested as of December 31, 2022	3,218	$	11.14
Granted	1,568	14.09
Released	(1,311)	9.80
Canceled	(174)	12.43
Nonvested as of September 30, 2023	3,301	$	13.00	1.97	$	49,614

Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Basic and diluted net income per share are calculated as follows (in thousands, except per share amounts):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic and diluted net income per share
Numerator:
Net income	$	6,469	$	12,113	$	22,053	$	28,878
Denominator:
Weighted-average shares outstanding - basic	74,526		75,881		74,184		76,191
Effect of dilutive potential common shares from stock options, stock awards and employee stock purchase plan	1,281		1,798		1,455		2,263
Weighted-average shares outstanding - diluted	75,807		77,679		75,639		78,454
Net income per share:
Basic	$	0.09	$	0.16	$	0.30	$	0.38
Diluted	$	0.09	$	0.16	$	0.29	$	0.37

Summary of Anti-dilutive Shares


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options, restricted stock units and employee stock purchase rights	1	4	33	84

Geographic Information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Schedule of Total Revenue Based on Customer's Location


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Americas	$	25,818	$	35,995	$	92,695	$	107,506
United States	23,777		29,219		79,738		92,149
Americas-other	2,041		6,776		12,957		15,357
APJ	21,196		24,860		58,938		64,263
APAC	6,964		9,487		22,001		23,700
Japan	14,232		15,373		36,937		40,563
EMEA	10,761		11,204		29,650		30,935
Total revenue	$	57,775	$	72,059	$	181,283	$	202,704

Long-lived Assets by Geographic Areas


	As of September 30, 2023		As of December 31, 2022
Americas	$	40,997	$	37,420
Japan	1,300		1,852

Other	1,346		1,668
Total	$	43,643	$	40,940

Revenue (Tables)

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

Deferred revenue consisted of the following (in thousands):


	As of September 30, 2023		As of December 31, 2022

Deferred revenue:
Products	$	12,999	$	7,782
Services	122,715		119,210
Total deferred revenue	135,714		126,992
Less: current portion	(79,540)		(74,340)
Non-current portion	$	56,174	$	52,652

The following table reflects contract balances with customers (in thousands):


	As of September 30, 2023		As of December 31, 2022
Accounts receivable, net	$	59,070	$	72,928


Deferred revenue, current	79,540		74,340
Deferred revenue, non-current	56,174		52,652

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

We expect to recognize revenue on the remaining performance obligations as follows (in thousands):


		As of September 30, 2023

Within 1 year		$	79,540
Next 2 to 3 years		46,488
Thereafter		9,686
	Total	$	135,714

Description of Business and Summary of Significant Accounting Policies - Concentration Risk (Details)	3 Months Ended			9 Months Ended
	Sep. 30, 2023 solution	Dec. 31, 2022	Sep. 30, 2022	Sep. 30, 2023 tool	Sep. 30, 2022
Entity Wide Revenue Major Customer [Line Items]
Number of software based advanced solutions \| solution	6
Number Of Intelligent Management And Automation Tools \| tool				2
Customer A \| Revenue \| Customer Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage representation of significant customers (percent)			10.00%	15.00%	10.00%
Customer A \| Accounts Receivable \| Customer Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage representation of significant customers (percent)	11.00%	21.00%
Customer B \| Revenue \| Customer Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage representation of significant customers (percent)					13.00%
Customer B \| Accounts Receivable \| Customer Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage representation of significant customers (percent)	10.00%	21.00%

Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
Total right-of-use assets	$ 17,589
Accrued liabilities	4,898	$ 4,792
Other non-current liabilities	13,063
Total operating lease liabilities	$ 17,961

Leases - Lease Liabilities (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Leases [Abstract]
Remainder of 2023	$ 1,347
2021	5,421
2022	4,948
2023	4,892
2024	2,441
Thereafter	0
Total lease payments	19,049
Less: imputed interest	(1,088)
Present value of lease liabilities	$ 17,961

Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Leases - Lease Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease costs	$ 1,087	$ 1,085	$ 3,291	$ 3,248
Short-term lease costs	129	126	378	417
Total lease costs	$ 1,216	$ 1,211	$ 3,669	$ 3,665
Weighted-average remaining term (years)	3 years 7 months 9 days		3 years 7 months 9 days
Weighted-average discount rate	3.19%		3.19%
Operating cash flows from operating leases			$ 3,972
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 0

Marketable Securities and Fair Value Measurements - Estimate of Fair Value of Marketable Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 64,989		$ 64,989		$ 83,954
Gross Unrealized Gains	44		44		0
Gross Unrealized Losses	(144)		(144)		(936)
Fair Value	64,889		64,889		83,018
Realized loss reclassified to earnings	0	$ 0	(265)	$ 0
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	36,782		36,782		35,137
Gross Unrealized Gains	9		9		0
Gross Unrealized Losses	(74)		(74)		(550)
Fair Value	36,717		36,717		34,587
U.S. Treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	27,257		27,257		28,627
Gross Unrealized Gains	1		1		0
Gross Unrealized Losses	(70)		(70)		(292)
Fair Value	27,188		27,188		28,335
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	950		950		11,859
Gross Unrealized Gains	34		34		0
Gross Unrealized Losses	0		0		0
Fair Value	984		984		11,859
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	0		0		8,331
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	0		0		(94)
Fair Value	$ 0		$ 0		$ 8,237

Marketable Securities and Fair Value Measurements - Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized Cost
Less than 1 year	$ 63,089
Mature in 1 - 3 years	1,900
Amortized Cost	64,989	$ 83,954
Fair Value
Less than 1 year	63,003
Mature in 1 - 3 years	1,886
Fair Value	$ 64,889	$ 83,018

Marketable Securities and Fair Value Measurements - Securities in Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less Than 12 Months	$ 48,491	$ 30,715
Fair Value, 12 Months or More	0	38,544
Fair Value, Total	48,491	69,259
Gross Unrealized Losses, Less Than 12 Months	(144)	(301)
Gross Unrealized Losses,12 Months or More	0	(635)
Gross Unrealized Losses	(144)	(936)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less Than 12 Months	33,829	7,610
Fair Value, 12 Months or More	0	26,977
Fair Value, Total	33,829	34,587
Gross Unrealized Losses, Less Than 12 Months	(74)	(162)
Gross Unrealized Losses,12 Months or More	0	(388)
Gross Unrealized Losses	(74)	(550)
U.S. Treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less Than 12 Months	14,662	14,868
Fair Value, 12 Months or More	0	11,567
Fair Value, Total	14,662	26,435
Gross Unrealized Losses, Less Than 12 Months	(70)	(45)
Gross Unrealized Losses,12 Months or More	0	(247)
Gross Unrealized Losses	$ (70)	(292)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less Than 12 Months		8,237
Fair Value, 12 Months or More		0
Fair Value, Total		8,237
Gross Unrealized Losses, Less Than 12 Months		(94)
Gross Unrealized Losses,12 Months or More		0
Gross Unrealized Losses		$ (94)

Marketable Securities and Fair Value Measurements - Schedule of Fair Value of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial Assets
Marketable Securities	$ 64,889	$ 83,018
Level 1
Financial Assets
Total	104,152	67,971
Level 2
Financial Assets
Total	64,889	83,018
Fair Value, Inputs, Level 1, 2 and 3
Financial Assets
Total	169,041	150,989
Cash
Financial Assets
Cash and Cash Equivalents	61,782	54,336
Cash \| Level 1
Financial Assets
Cash and Cash Equivalents	61,782	54,336
Cash equivalents
Financial Assets
Cash and Cash Equivalents	42,370	13,635
Cash equivalents \| Level 1
Financial Assets
Cash and Cash Equivalents	42,370	13,635
Corporate debt securities
Financial Assets
Marketable Securities	36,717	34,587
Corporate debt securities \| Level 2
Financial Assets
Marketable Securities	36,717	34,587
U.S. Treasury and agency securities
Financial Assets
Marketable Securities	27,188	28,335
U.S. Treasury and agency securities \| Level 2
Financial Assets
Marketable Securities	27,188	28,335
Commercial paper
Financial Assets
Marketable Securities	984	11,859
Commercial paper \| Level 2
Financial Assets
Marketable Securities	984	11,859
Asset-backed securities
Financial Assets
Marketable Securities	0	8,237
Asset-backed securities \| Level 2
Financial Assets
Marketable Securities	$ 0	$ 8,237

Condensed Consolidated Financial Statement Details - Schedule of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 14,401	$ 12,771
Finished goods	9,160	6,922
Total inventory	$ 23,561	$ 19,693

Condensed Consolidated Financial Statement Details - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Prepaid expenses	$ 5,176	$ 5,310
Deferred contract acquisition costs	6,198	6,144
Other	1,585	1,927
Total prepaid expenses and other current assets	$ 12,959	$ 13,381

Condensed Consolidated Financial Statement Details - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 50,563		$ 50,563		$ 42,487
Less: accumulated depreciation	(24,509)		(24,509)		(22,744)
Property and equipment, net	26,054		26,054		19,743
Depreciation expense	1,400	$ 700	3,300	$ 2,000
Equity Method Investment, Other than Temporary Impairment	3,000
Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	30,739		30,739		27,028
Software(1)
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,981		2,981		2,537
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	500		500		503
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,233		3,233		3,267
Construction in process
Property Plant And Equipment [Line Items]
Property and equipment, gross	13,110		13,110		9,152
Acquired software
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,800		1,800		1,100
Internally developed software
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,200		$ 1,200		$ 1,400
Minimum \| Equipment
Property Plant And Equipment [Line Items]
Useful life	1 year		1 year
Minimum \| Software(1)
Property Plant And Equipment [Line Items]
Useful life	1 year		1 year
Minimum \| Furniture and fixtures
Property Plant And Equipment [Line Items]
Useful life	1 year		1 year
Minimum \| Acquired software
Property Plant And Equipment [Line Items]
Useful life	1 year		1 year
Minimum \| Internally developed software
Property Plant And Equipment [Line Items]
Useful life	6 years		6 years
Maximum \| Equipment
Property Plant And Equipment [Line Items]
Useful life	5 years		5 years
Maximum \| Software(1)
Property Plant And Equipment [Line Items]
Useful life	6 years		6 years
Maximum \| Furniture and fixtures
Property Plant And Equipment [Line Items]
Useful life	7 years		7 years
Maximum \| Acquired software
Property Plant And Equipment [Line Items]
Useful life	3 years		3 years

Condensed Consolidated Financial Statement Details - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 1.4	$ 0.7	$ 3.3	$ 2.0

Condensed Consolidated Financial Statement Details - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Accrued compensation and benefits	$ 8,138	$ 19,832
Accrued tax liabilities	918	1,635
Lease liability	4,898	4,792
Other	9,623	10,924
Total accrued liabilities	$ 23,577	$ 37,183

Condensed Consolidated Financial Statement Details - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 135,714	$ 126,992
Less: current portion	(79,540)	(74,340)
Non-current portion	56,174	52,652
Products
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	12,999	7,782
Services
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 122,715	$ 119,210

Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 1.2	$ 1.2	$ 3.7	$ 3.7
Remaining purchase commitments	$ 18.2		$ 18.2

Equity Incentive Plans and Stock-Based Compensation - 2014 Equity Incentive Plan/ESPP (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Apr. 26, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised		$ 0.3	$ 2.8	$ 1.2	$ 4.5
Amended 2014 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grant (in shares)		968,943		968,943
Amended 2014 Employee Stock Purchase Plan \| ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of eligible compensation				10.00%
Offering period				6 months
Two Thousand Twenty Three Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grant (in shares)		4,724,521		4,724,521
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	5,600,000
Two Thousand Twenty Three Stock Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized for future issuance (in shares)	3,475,099

Equity Incentive Plans and Stock-Based Compensation - Schedule of Stock-based Compensation Awards Granted under Stock Option Plan in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 3,966	$ 3,505	$ 11,180	$ 9,818
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	446	434	1,262	1,155
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	1,248	1,193	3,305	3,335
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	896	826	2,533	2,455
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	1,376	1,052	4,080	2,873
Stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	3,701	3,168	10,349	8,803
Employee stock purchase rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 265	$ 337	$ 831	$ 1,015

Equity Incentive Plans and Stock-Based Compensation - Stock-based Compensation/Stock Repurchase Program (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Share-Based Payment Arrangement [Abstract]
Total compensation expense related to unvested awards granted, not yet recognized	$ 36.2
Total compensation expense related to unvested awards granted, not yet recognized weighted-average period for recognition (in years)	2 years 8 months 19 days

Equity Incentive Plans and Stock-Based Compensation - Summary of Activity under Stock Option Plans (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Number of Shares (thousands)
Outstanding options, Beginning balance (in shares)			279
Exercised (in shares)			(162)
Outstanding options, Ending balance (in shares)	117		117
Vested and exercisable (in shares)	117		117
Weighted-Average Exercise Price Per Share
Beginning balance (in dollars per share)			$ 6.59
Exercised (in dollars per share)			7.31
Ending balance (in dollars per share)	$ 5.59		5.59
Vested and exercisable at end of period (in dollars per share)	$ 5.59		$ 5.59
Weighted-average remaining contractual term (in years)			1 year 1 month 2 days
Weighted average remaining contractual term, Vested and exercisable at end of period (in years)			1 year 1 month 2 days
Aggregate Intrinsic Value	$ 1,103		$ 1,103
Aggregate Intrinsic Value, Vested and exercisable at end of period	$ 1,103		$ 1,103
Closing price (in dollars per share)	$ 15.03		$ 15.03
Intrinsic value of options exercised	$ 300	$ 2,800	$ 1,200	$ 4,500

Equity Incentive Plans and Stock-Based Compensation - Information About Stock Options (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 0.3	$ 2.8	$ 1.2	$ 4.5

Equity Incentive Plans and Stock-Based Compensation - Summary of RSU activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested at end of period (in shares)	3,301,000		3,301,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested	$ 49,614		$ 49,614
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested at beginning of period (in shares)			3,218,000
Granted (in shares)			1,568,000
Released (in shares)			(1,311,000)
Canceled (in shares)			(174,000)
Unvested at end of period (in shares)	2,546,588		2,546,588
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Unvested at beginning of period (in dollars per share)			$ 11.14
Granted (in dollars per share)			14.09
Released (in dollars per share)			9.80
Canceled (in dollars per share)			12.43
Unvested at ending of period (in dollars per share)	$ 13.00		$ 13.00
Weighted-Average Remaining Vesting Term (years)			1 year 11 months 19 days
Fair value of released awards	$ 8,400	$ 7,600	$ 12,800	$ 11,500
Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested at end of period (in shares)	754,442		754,442

Equity Incentive Plans and Stock-Based Compensation - Stock Repurchase Program (Details) - USD ($) shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Nov. 07, 2023	Nov. 01, 2022	Oct. 28, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Authorized Amount			$ 50,000	$ 50,000	$ 100,000
Treasury Stock, Value, Acquired, Cost Method	$ 8,700	$ 79,300
Treasury Stock, Shares, Acquired	605	6,100

Net Income Per Share - Summary of Outstanding Shares of Common Stock Equivalents (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share Diluted [Line Items]
Net income	$ 6,469	$ 12,113	$ 22,053	$ 28,878
Weighted-average shares outstanding - basic (in shares)	74,526	75,881	74,184	76,191
Weighted Average Number Diluted Shares Outstanding Adjustment	1,281	1,798	1,455	2,263
Weighted-average shares outstanding - diluted (in shares)	75,807	77,679	75,639	78,454
Basic	$ 0.09	$ 0.16	$ 0.30	$ 0.38
Diluted	$ 0.09	$ 0.16	$ 0.29	$ 0.37
Stock options, restricted stock units and employee stock purchase rights
Earnings Per Share Diluted [Line Items]
Anti-dilutive securities excluded from computation of diluted net income per share	1	4	33	84

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (1,507)	$ 3,116	$ 2,643	$ 7,467
Unrecognized tax benefits	$ 7,300		$ 7,300

Geographic Information - Schedule of Total Revenue Based on Customer's Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 57,775	$ 72,059	$ 181,283	$ 202,704
Americas
Segment Reporting Information [Line Items]
Total revenue	25,818	35,995	92,695	107,506
Americas
Segment Reporting Information [Line Items]
Total revenue	23,777	29,219	79,738	92,149
Americas excluding United States
Segment Reporting Information [Line Items]
Total revenue	2,041	6,776	12,957	15,357
APJ
Segment Reporting Information [Line Items]
Total revenue	21,196	24,860	58,938	64,263
APAC excluding Japan
Segment Reporting Information [Line Items]
Total revenue	6,964	9,487	22,001	23,700
Japan
Segment Reporting Information [Line Items]
Total revenue	14,232	15,373	36,937	40,563
EMEA
Segment Reporting Information [Line Items]
Total revenue	$ 10,761	$ 11,204	$ 29,650	$ 30,935

Geographic Information - Long Lived Assets By Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 43,643	$ 40,940
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	40,997	37,420
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,300	1,852
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,346	$ 1,668

Revenue - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
Revenue - Additional Information (Details) - USD ($)	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Capitalized Contract Cost [Line Items]
Accumulated deficit	$ 108,401,000		$ 108,401,000		$ 130,454,000
Deferred revenue	135,714,000		135,714,000		126,992,000
Revenue recognized	25,800,000	$ 20,300,000	60,000,000	$ 59,500,000
Asset impairment charges for contract assets			0
Deferred contract acquisition costs	6,198,000		6,198,000		6,144,000
Deferred Sales Commissions
Capitalized Contract Cost [Line Items]
Deferred contract acquisition costs	4,300,000		4,300,000		4,300,000
Amortization			4,600,000	$ 6,800,000
Impairment loss of contract acquisition costs			0
Deferred contract acquisition costs	$ 6,200,000		$ 6,200,000		$ 6,100,000

Revenue - Contract Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 59,070	$ 72,928
Deferred revenue	79,540	74,340
Deferred revenue, non-current	56,174	52,652
Deferred contract acquisition costs	$ 6,198	$ 6,144

Revenue - Remaining Performance Obligations (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 135,714
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 79,540
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 46,488
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 9,686
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation period	4 years

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 01, 2023	Nov. 17, 2023	Nov. 07, 2023	Nov. 01, 2022	Oct. 28, 2021
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount			$ 50,000	$ 50,000	$ 100,000
Subsequent event
Subsequent Event [Line Items]
Dividends Payable, Date Declared			Nov. 07, 2023
Common Stock, Dividends, Per Share, Declared			$ 0.06
Dividends Payable, Date to be Paid	Dec. 01, 2023
Dividends Payable, Date of Record		Nov. 17, 2023