UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 11-K
 
FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS
AND SIMILAR PLANS PURSUANT TO SECTION 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
 
(Mark One)
ýANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.
 
For the fiscal year ended December 31, 2023
 
OR
 
oTRANSITION REPORT PURSUANT TO 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.
 
For the transition period from                             to                            
 
Commission file number  1-8962
 
The Pinnacle West Capital Corporation Savings Plan
(Full title of the plan)
 
Pinnacle West Capital Corporation
(Name of issuer)
 
400 North Fifth Street
P.O. Box 53999
Phoenix, Arizona 85072-3999
(Address of issuer’s principal executive office)















THE PINNACLE WEST CAPITAL CORPORATION SAVINGS PLAN
 
TABLE OF CONTENTS
 
 
NOTE:  Supplemental schedules required by section 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974, other than the schedule listed above, are omitted because of the absence of the conditions under which they are required.



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Investment Management Committee and
Benefit Administration Committee of The Pinnacle West
Capital Corporation Savings Plan and Plan Participants:

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for benefits of The Pinnacle West Capital Corporation Savings Plan (the "Plan") as of December 31, 2023 and 2022, the related statement of changes in net assets available for benefits for the year ended December 31, 2023, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2023 and 2022, and the changes in net assets available for benefits for the year ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on the Plan's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Report on Supplemental Schedule

The supplemental schedule of assets (held at end of year) as of December 31, 2023, has been subjected to audit procedures performed in conjunction with the audit of the Plan's financial statements. The supplemental schedule is the responsibility of the Plan's management. Our audit procedures included determining whether the supplemental schedule reconcile to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedule. In forming our opinion on the supplemental schedule, we evaluated whether the supplemental schedule, including its form and content, is presented in compliance with the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, such schedule is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ DELOITTE & TOUCHE LLP

Tempe, Arizona
June 14, 2024

We have served as the auditor of the Plan since 1979.



THE PINNACLE WEST CAPITAL CORPORATION SAVINGS PLAN
STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
AS OF DECEMBER 31, 2023 AND 2022
 
 20232022
ASSETS:  
Participant-directed investments at fair value (Notes 2 and 5)$1,318,615,204 $1,134,386,348 
Participant-directed investments at contract value (Notes 2 and 4)116,750,080 134,903,912 
Total investments1,435,365,284 1,269,290,260 
Receivables:  
Notes receivable from participants (Note 1)21,718,223 20,555,914 
Participant contributions1,598,239 1,257,016 
Employer contributions499,276 392,942 
Other receivables15,573,354 9,234,515 
Total receivables39,389,092 31,440,387 
Total assets1,474,754,376 1,300,730,647 
LIABILITIES:  
Payable for securities purchased9,144,996 7,761,731 
Accrued administrative expenses323,366 300,067 
Total liabilities9,468,362 8,061,798 
NET ASSETS AVAILABLE FOR BENEFITS$1,465,286,014 $1,292,668,849 
 
See notes to financial statements.

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THE PINNACLE WEST CAPITAL CORPORATION SAVINGS PLAN
STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
FOR THE YEAR ENDED DECEMBER 31, 2023
 
CONTRIBUTIONS (Note 1): 
Participants$71,408,381 
Employer24,766,651 
Rollover9,318,608 
Total contributions105,493,640 
 
INVESTMENT INCOME (Note 2): 
Net realized/unrealized appreciation in fair value of investments
184,527,593 
Dividend, interest, and other income17,228,381 
Interest income on notes receivable from participants1,211,937 
Total investment income
202,967,911 
  
DEDUCTIONS: 
Distributions to participants133,469,208 
Administrative expenses (Note 2)2,375,178 
Total deductions135,844,386 
  
INCREASE IN NET ASSETS
172,617,165 
  
NET ASSETS AVAILABLE FOR BENEFITS: 
  
Beginning of year1,292,668,849 
End of year$1,465,286,014 
 
See notes to financial statements.

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THE PINNACLE WEST CAPITAL CORPORATION SAVINGS PLAN
 
NOTES TO FINANCIAL STATEMENTS

 
1.    DESCRIPTION OF THE PLAN
 
The following description of The Pinnacle West Capital Corporation Savings Plan (the "Plan") provides only general information.  Participants should refer to the Plan document for a more complete description of the Plan’s provisions.
 
General
 
The Plan is a defined contribution plan sponsored by Pinnacle West Capital Corporation ("Pinnacle West" or the "Company").  The Plan is administered by two committees, the Benefit Administration Committee and the Investment Management Committee, appointed by the Pinnacle West Board of Directors (together, the "Committee"). The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"). The trustee for the Plan is Fidelity Management Trust Company ("Trustee").

The Investment Management Committee appointed an independent fiduciary to manage the Pinnacle West Stock Fund investment option under the Employee Stock Ownership Plan feature in April 2021. The independent fiduciary has the sole authority to vote any shares and to instruct the Trustee accordingly with respect to shares of Pinnacle West common stock held in the Pinnacle West Stock Fund that are not otherwise voted by the Plan participants themselves. The Company froze the Pinnacle West Stock Fund as an investment choice in the Plan on September 30, 2020. See Note 6.
 
Eligibility
 
Generally, as defined by the Plan, most active employees of Pinnacle West and its subsidiaries, including Arizona Public Service Company, El Dorado Investment Company and Bright Canyon Energy Corporation (collectively, the "Employer"), are eligible to participate in (1) the pre-tax, Roth 401(k), and after-tax features of the Plan immediately upon employment or, if later, their attainment of age 18 and (2) the matching feature on the first day of the month coincident with or following their attainment of age 18 and completion of six full months of service.

Contributions
 
The Plan allows participants to contribute up to 50% of their base pay as pre-tax contributions, Roth 401(k) contributions or after-tax contributions, provided that in no event can the combined total contributions made by any participant in any year exceed 50% of their base pay, or the limits imposed by the Internal Revenue Code ("IRC").  Eligible employees who do not affirmatively elect to participate or opt out of the Plan are automatically enrolled as soon as administratively possible after 60 days of employment.  Employees automatically enrolled contribute 3% of their base pay as pre-tax contributions.  The Plan also allows participants attaining the age of 50 before the end of the calendar year to make catch-up contributions in accordance with Section 414(v) of the IRC. The maximum allowable pre-tax contribution and catch-up contribution may increase in future years as determined annually by the Internal Revenue Service ("IRS").  Participants may elect to set their pre-tax contributions to increase automatically on an annual basis based on the percent increase and effective date designated by the participant, up to the maximum limits permitted under the Plan and the IRC.
 
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Employer contributions are fixed at 75% of the first 6% of base pay for combined pre-tax and/or Roth 401(k) participant contributions (excluding catch-up contributions) for all participants other than employees hired prior to January 1, 2003 and who elected not to participate in the Retirement Account Balance feature of the Pinnacle West Capital Corporation Retirement Plan. Participants hired prior to January 1, 2003, and who elected not to participate in the Retirement Account Balance feature, receive an Employer match of 50% of the first 6% of base pay contributed, in combination, as pre-tax and/or Roth 401(k) participant contributions (excluding catch-up contributions).
 
Employer contributions are invested in the same investment funds as participants elect for their participant contributions.  Noncash contributions, are recorded at fair value. There were no noncash contributions for the year ended December 31, 2023.
 
The Plan allows rollover contributions from other eligible retirement plans, including 401(k) or other qualified plans (including after-tax dollars), governmental 457(b) plans, Roth 401(k) accounts, 403(b) annuities (including after-tax dollars), or IRAs (excluding after-tax dollars), subject to certain criteria. Rollover contributions are not eligible for employer match.

If a participant elected to reinvest dividends in the Pinnacle West Stock Fund, any dividends paid on balances in the Pinnacle West Stock Fund are reinvested in accordance with the future investment allocations the participant has selected.

Participant Accounts
 
Individual accounts are maintained for each Plan participant.  Allocations of earnings and losses are based on participant account balances.  If applicable, each participant has separate accounts that are credited with the participant’s pre-tax contributions, Roth 401(k) contributions, after-tax contributions, rollover contributions, in-plan Roth conversions, the Employer’s matching contributions and an allocation of Plan earnings.  If applicable, each participant’s account is charged with withdrawals, an allocation of Plan losses and explicit recordkeeping and administrative fees (see Note 2).  A dollar amount is deducted quarterly from each participant’s account for the explicit recordkeeping and administrative fees.

Investment Choices
 
Participants direct all contributions into one or more of the following (collectively, the "Funds"): 
Age-based investment options ("Target Retirement Date Funds") that include:
Retirement Income Fund
Target Retirement 2020 Fund
Target Retirement 2025 Fund
Target Retirement 2030 Fund
Target Retirement 2035 Fund
Target Retirement 2040 Fund
Target Retirement 2045 Fund
Target Retirement 2050 Fund
Target Retirement 2055 Fund
Target Retirement 2060 Fund
Target Retirement 2065 Fund

Core investment options that include:
Stable Value Fund (see Note 4)*
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US Bond Index
Bond Fund*
Diversified Inflation Fund
US Large Cap Stock Index
US Large Cap Stock Fund*
US Small/Mid Cap Stock Index
US Small/Mid Cap Stock Fund*
Non-US Stock Index
Non-US Stock Fund
Pinnacle West Stock Fund**

* Separately managed accounts, specific to this Plan only.
** A separately managed account, specific to this Plan only. On September 30, 2020, the Company froze the Pinnacle West Stock Fund (see Note 2).

    The Plan provides that in lieu of making their own investment elections in the funds, participants may (a) choose to have an investment allocation suggested for them through the Plan's personal asset manager program or choose to have their portfolio managed for them utilizing the Plan's Managed Account service, both of which provide a personalized mix of the Plan's core investment options; (b) allow their balance to be invested in the Qualified Default Investment Alternative ("QDIA") which is the family of Target Retirement Date Funds that are composed of the core investment options; (c) establish a self-directed brokerage account ("SDA") to invest up to 90% of their vested account balance in permitted investments of the SDA (which excludes the Funds); or (d) elect to have their investment mix of Funds automatically rebalanced according to their investment elections on a quarterly, semiannual or annual basis.

Notes Receivable from Participants
 
Participants may borrow money from their pre-tax contributions account, Roth 401(k) contributions account, vested Employer contributions account, rollover contributions account, and in-plan Roth conversions.  Participants may not borrow against their Employer transfer account, self-directed brokerage fund or their after-tax contributions account.
 
The minimum participant loan allowed is $1,000. Generally, the maximum participant loan allowed is 50% of the participant’s vested account balance, up to $50,000 reduced by the participant’s highest outstanding loan balance in the 12-month period ending on the day before the loan is made. Only one loan per participant may be outstanding at any one time. Loan terms are up to 15 years for the purchase of the participant's principal residence or up to 5 years for all other purposes. An administrative fee is charged to the participant’s account for each loan. Participants with an outstanding loan may continue to make loan repayments upon termination of employment with the Employer, unless they receive a full distribution of their account balance.

The interest rate for a participant loan is determined at the time the loan is requested and is fixed for the life of the loan.  The Trustee currently charges interest at the prime interest rate plus one percent, determined as of the first business day of the month in which the loan is issued.  The average interest rate for loans issued during 2023 was 9.19%.  Interest rates for outstanding loans as of December 31, 2023 and 2022, ranged from 4.25% to 9.50%.  As of December 31, 2023, participant loans have maturities through 2038.
 
Loans are treated as investments of the participants’ accounts.  To fund the loan, transfers are made from the participant’s investment funds on a pro-rata basis.  Amounts credited to a participant’s SDA are not available for a loan.  Loan repayments are invested in the participant’s investment funds based on the participant’s current investment election or in the QDIA, if the participant does not have a current investment
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election in place.  Loan repayments, including interest, are generally made through irrevocable payroll deductions.  Loan repayments for former participants are made through the automated clearing house system.  Loans are secured by the participant’s account balance.
 
Vesting and Forfeitures
 
Effective April 1, 2006, each new participant is automatically fully vested in the participant’s pre-tax contributions account, Roth 401(k) contributions account, after-tax contributions account, rollover contributions account, in-plan Roth conversions (consisting of the participant’s contributions and related income and appreciation or depreciation), Employer transfer account, and Employer contributions account (consisting of Employer contributions and related income and appreciation or depreciation).
 
Withdrawals and Distributions
 
A participant may, at any time, make a full or partial withdrawal of the balance in the participant’s after-tax contributions account, rollover contributions account, and in-plan Roth conversions.  No withdrawals prior to termination of employment are permitted from a participant’s Employer transfer account.  No withdrawals prior to termination of employment are permitted from the participant’s pre-tax contributions account and Roth 401(k) contributions account, except under certain limited circumstances relating to financial hardship or after attaining age 59-1/2.  Participants who have participated in the Plan for five complete Plan years may withdraw the amount in their Employer contributions account.  Participants who are at least age 59-1/2 may withdraw any portion of their pre-tax contributions account, Roth 401(k) contributions account, rollover contributions account, or in-plan Roth conversions while employed with no restrictions on the reason for withdrawal.  For all withdrawals and distributions, penalties may apply. Amounts credited to a participant’s SDA are not available for a withdrawal until transferred back into the Funds.  When the participant’s employment with the Employer is terminated, the participant can elect to receive a full or partial distribution, as soon as administratively possible, of their Employer contributions account together with the participant’s contributions accounts and Employer transfer account. Participants can take a loan prior to a hardship withdrawal and contributions are not suspended as a result of taking a hardship withdrawal.

Termination of the Plan
 
It is the Company’s present expectation that the Plan and the payment of Employer contributions will be continued indefinitely.  However, continuance of any feature of the Plan is not assumed as a contractual obligation.  The Company, at its discretion, may terminate the Plan and distribute net assets, subject to the provisions set forth in ERISA and the IRC, or discontinue the Company's contributions.
 
2.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
Basis of Accounting
 
The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP").

Subsequent Events

    Subsequent events were evaluated through June 14, 2024, the date the financial statements were issued. On January 12, 2024, Pinnacle West completed the business sale of Bright Canyon Energy, including the transfer of certain employees. As a result of the sale, Bright Canyon Energy is no longer a subsidiary of
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Pinnacle West. No other events occurred that require additional disclosure or adjustments to the Plan's financial statements.

Use of Estimates
 
The preparation of financial statements in conformity with GAAP requires the Plan’s management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and changes therein and disclosure of contingent assets and liabilities. Actual results could differ from those estimates.

Risks and Uncertainties
 
The Plan utilizes various investment instruments. Investment securities, in general, are exposed to various risks, such as interest rate risk, credit risk, liquidity risk, inflation risk and overall market volatility. Market risks include global events which could impact the value of investments, such as a pandemic or international conflict. Due to the level of risk associated with certain investment securities, it is possible that changes in the value of investment securities may occur in the near term and that such changes could materially affect the amounts reported in the financial statements.

Investment Valuation

The Plan’s investments are stated at fair value (except for fully benefit-responsive investment contracts, which are reported at contract value), less costs to sell, if those costs are significant.  Fair value is the price that would be received upon the sale of an asset or the amount paid to transfer a liability in an orderly transaction between market participants at the measurement date.  See Note 5 for fair value measurements and disclosures of the Plan’s investments reported at fair value.

The Plan's investment options include a unitized stock fund, which owns shares of Pinnacle West common stock, and together with a small portion of cash maintained for liquidity purposes, is recorded on a unit basis. Pinnacle West's common shares are traded on the New York Stock Exchange ("NYSE") and are valued at the NYSE closing price on the last business day of the plan year (see Note 5). The valuation per share of Pinnacle West's common stock was $71.84 and $76.04 at December 31, 2023 and 2022, respectively. The valuation per unit of the Pinnacle West stock fund was $17.82 and $18.83 at December 31, 2023 and 2022, respectively. 

Included in investments at December 31, 2023 and 2022, are shares of Pinnacle West common stock amounting to $47,548,166 and $57,324,123, respectively. This investment represents 3% and 5% of total investments at December 31, 2023 and 2022, respectively. A significant decline in the market value of the stock could have an effect on the net assets available for benefits.
 
Effective on September 30, 2020, the Company froze the Pinnacle West Stock Fund as an investment choice in the Plan. Plan participants are no longer able to invest future contributions or reinvest dividends in the Pinnacle West Stock Fund or exchange from another investment option into the Pinnacle West Stock Fund. Any portion of a participant's account balance that is invested in the Pinnacle West Stock Fund may remain in the Pinnacle West Stock Fund at this time.

The Stable Value Fund investment option is composed of fully benefit-responsive synthetic guaranteed investment contracts ("SGICs"), which are reported at contract value. Contract value is the relevant measure for fully benefit-responsive investment contracts because it is the amount Plan participants would receive if they were to initiate permitted transactions under the terms of the Plan.  Contract value represents contributions
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made under each contract, plus earnings, less participant withdrawals, and administrative expenses. The Statement of Net Assets Available for Benefits presents SGICs on a contract value basis (see Note 4).
 
Income Recognition
 
Purchases and sales of securities are recorded as of the trade date.  Interest income is recorded on the accrual basis.  Dividend income is recorded as of the ex-dividend date. Net appreciation (depreciation) includes the Plan’s gain and losses on investments bought and sold as well as held during the year.
 
Administrative Expenses
 
Participants pay a quarterly Plan recordkeeping fee. Participants may also pay administrative fees for the origination of a loan, distributions, qualified domestic relation order processing or for other services provided by the Trustee. Participants pay investment, sales, recordkeeping, and administrative expenses charged by the Funds, which are deducted from assets and reflected as a reduction of investment return for the Fund. Some participants utilizing the SDA may pay income tax charges depending on the assets that they may hold in their respective SDA. Pinnacle West pays the remaining Plan administrative expenses, such as legal expenses.
 
Notes Receivable From Participants
 
Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest.  Delinquent participant loans are recorded as distributions based on the terms of the Plan.
 
Payment of Benefits
 
Benefit payments to participants are recorded upon distribution.  As of December 31, 2023 and 2022, there were no amounts allocated to accounts of persons who have elected to withdraw from the Plan, but have not yet been paid.

Excess Contributions Payable
 
The Plan is required to return contributions received during the Plan year in excess of the IRC limits.

Net Realized/Unrealized Appreciation in Fair Value of Investments

Net realized/unrealized appreciation includes the Plan's gains and losses on investments bought and sold during the year as well as unrealized gains and losses related to investments held at year end.
 
3.    FEDERAL INCOME TAX STATUS
 
GAAP requires Plan management to evaluate tax positions taken by the Plan and recognize a tax liability if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. Plan management has concluded that, as of December 31, 2023 and December 31, 2022, there are no uncertain positions taken or expected to be taken that would require recognition of a liability or disclosure in the financial statements. The Plan is subject to routine audits by the IRS, however, there are currently no audits for any tax periods in progress.
 
The IRS has determined and informed the Company by a letter dated March 16, 2018, that the Plan and related trust were designed in accordance with the applicable regulations of the IRC. The Plan has been
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amended since receiving the determination letter. However, the Company and Plan management believe that the Plan is currently designed and operated in compliance with the applicable requirements of the IRC, and the Plan and related trust continue to be tax-exempt. Therefore, no provision for income taxes has been included in the Plan’s financial statements.

4.    INVESTMENT CONTRACTS
 
 The Stable Value Fund is an investment option offered to all participants in the Plan. This investment option consists of three fully benefit-responsive SGICs and accordingly, is recorded at contract value in the Statements of Net Assets Available for Benefits. A SGIC is an investment contract issued by an insurance company or other financial institution ("Wrap Agreement"), backed by a portfolio of bonds, mortgages, or other fixed income instruments. The realized and unrealized gains and losses on the underlying assets are not reflected immediately in the value of the contract, but rather are amortized, usually over the time to maturity or the duration of the underlying investments, through adjustments to the future interest crediting rate.  Formulas are provided in each contract that adjust the interest crediting rate to recognize the difference between the fair value and the book value of the underlying assets. The contract provides for an interest crediting rate that may not be less than zero percent per annum. Interest crediting rates are reviewed monthly for resetting. The Wrap Agreement is intended to guarantee that the qualified participant withdrawals will occur at contract value.
 
Certain events may limit the ability of the Plan to transact at contract value with the issuer.  While the events may differ from contract to contract, the events typically include: Plan amendments or changes, company mergers or consolidations, participant investment election changes, group terminations or layoffs, implementation of an early retirement program, termination or partial termination of the Plan, failure to meet certain tax qualifications, participant communication that is designed to influence participants not to invest in the Stable Value Fund, transfers to competing options without meeting the equity wash provisions of the Stable Value Fund (if applicable), Plan sponsor withdrawals without the appropriate notice to the Stable Value Fund’s investment manager and/or wrap contract issuers, any changes in laws or regulations that would result in substantial withdrawals from the Plan, and default by the Plan sponsor in honoring its credit obligations, insolvency, or bankruptcy if such events could result in withdrawals.  In general, wrap providers may terminate the contract and settle at other than contract value due to changes in the qualification status of the company or the Plan, breach of material obligations under the contract and misrepresentation by the contract holder, or failure of the underlying portfolio to conform to the pre-established investment guidelines.  Plan management believes that the occurrence of such events that would cause the Plan to transact at less than contract value is not probable.
 
The Plan’s fully benefit-responsive SGICs are included in the Statements of Net Assets Available for Benefits as participant-directed investments at contract value at December 31, 2023 and 2022 of $116,750,080 and $134,903,912, respectively. The fully benefit-responsive SGICs earned interest income of $3,359,513 during the year ended December 31, 2023.
 
5.    FAIR VALUE MEASUREMENTS
 
The Plan applies fair value measurements to certain investments and provides disclosures of certain assets according to a fair value hierarchy.  The hierarchy ranks the quality and reliability of the inputs used to determine fair values, which are then classified and disclosed in one of three categories.  The three levels of the fair value hierarchy are:
 
Level 1 — Unadjusted quoted prices in active markets for identical assets or liabilities.
 
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Level 2 — Other significant observable inputs including quoted prices in active markets for similar assets or liabilities; quoted prices in markets that are not active; and model-derived valuations whose inputs are observable (such as yield curves).
 
Level 3 — Model-derived valuations with unobservable inputs that are supported by little or no market activity.
 
Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. Valuation methodologies maximize the use of observable inputs and minimize the use of unobservable inputs. The Plan’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels. Investments valued using net asset value ("NAV") as a practical expedient are not classified within the fair value hierarchy.
 
The following is a description of the valuation methodologies used for assets measured at fair value.  There have been no changes in the methodologies used at December 31, 2023 and 2022.
 
Common Stocks: Valued at the closing price reported on the active market on which the individual securities are traded. See Note 2 for additional discussion of Pinnacle West Common Stock.

Short-Term Investments: Consists primarily of mutual funds that seek to provide safety of principal, daily liquidity and a competitive yield by investing in U.S. Government Securities, or money market funds. Valuation is based on the quoted NAV of shares held by the Plan, consistent with the methodology for valuing mutual funds as discussed below.

Mutual Funds:  Valued and redeemable at the quoted NAV of shares held by the Plan. The NAV is based on the quoted price at the end of the day on the active market in which the individual funds are traded. Mutual funds are open-ended funds that are registered with the Securities and Exchange Commission.
 
Self-Directed Brokerage Account: Consists primarily of common stocks, mutual funds, and short-term investments that are valued on the basis of readily determinable market prices.

Common and Collective Trusts: Valued, as a practical expedient, based on the trusts’ NAV of units held by the Plan at year-end. NAV is based on the market prices in active markets of the underlying securities owned by the trusts.  The trusts are similar to mutual funds except, among other differences, that the trusts’ shares are offered to a limited group of investors and are not traded on an exchange.  Participant redemptions in the trusts do not require a notification period, and may occur on a daily basis at the NAV.  The trusts have the ability to implement redemption safeguards which, theoretically, could limit the Plan’s ability to transact in the trusts. However, no such safeguards were in effect during the year and, as such, these safeguards had no effect on participant redemptions during the year or on year-end NAV valuation. The Plan has no unfunded commitments to these trusts as of December 31, 2023 and 2022.

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The following table presents by level within the fair value hierarchy, the Plan's assets reported at fair value:
 
 December 31,
Quoted Prices in Active Markets (Level 1):20232022
Common stocks$90,125,078 $73,222,528 
Short-term investments 5,364,296 8,388,037 
Mutual funds188,352,995 161,024,448 
Pinnacle West common stock47,548,166 57,324,123 
Self-directed brokerage account111,782,374 92,480,715 
Total level 1 and fair value hierarchy assets443,172,909 392,439,851 
Investments measured at NAV:
Common and collective trusts875,442,295 741,946,497 
Total investments at fair value$1,318,615,204 $1,134,386,348 

6.    EXEMPT PARTY-IN-INTEREST TRANSACTIONS
 
In April 2021, an independent fiduciary began managing the Pinnacle West Stock Fund.  These transactions qualify as exempt party-in-interest transactions.  As of December 31, 2023 and 2022, the Plan held 661,862 and 753,868 shares, respectively, of Pinnacle West common stock, the sponsoring employer, in the Pinnacle West Stock Fund, with a cost basis of $38,041,669 and $43,924,177, and a fair value of $47,548,166 and $57,324,123, respectively.  During the year ended December 31, 2023, the Plan recorded dividend income from Pinnacle West common stock of $2,483,117. As of December 31, 2023 and 2022, the Plan also held $83,478 and $0, respectively, of Pinnacle West common stock, in the Robeco Small/Mid Capitalization Value Equity Fund (See Form 5500, Schedule H). As of December 31, 2023 and 2022, the Plan held $3,451,500 and $6,287,371, respectively, of short-term investments managed by the Trustee, with the majority held within the Stable Value Fund.

Effective on September 30, 2020, the Company froze the Pinnacle West Stock Fund as an investment choice in the Plan. Plan participants are no longer able to invest future contributions or reinvest dividends in the Pinnacle West Stock Fund or exchange from another investment option into the Pinnacle West Stock Fund. Any portion of a participant's account balance that is invested in the Pinnacle West Stock Fund may remain in the Pinnacle West Stock Fund at this time.

Transactions under certain investment managers in 2023 include revenue share agreements with the Trustee that qualify as exempt party-in-interest transactions. Amounts received under these revenue share agreements were immaterial for the year ended December 31, 2023. These revenue share amounts are currently allocated back to participants.

The Plan issues loans to participants which are secured by the vested balances in the participants’ accounts.
 
Certain employees and officers of the Company, who may also be participants in the Plan, perform financial reporting and other services for the Plan, at no cost to the Plan.  The Plan sponsor pays for these services.

 
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7.    RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500
 
The following is a reconciliation of Net Assets Available for Benefits per the financial statements to Form 5500:
 
 20232022
Net Assets Available for Benefits per the financial statements$1,465,286,014 $1,292,668,849 
Adjustment from contract value to fair value for fully benefit-responsive investment contracts(6,468,938)(9,004,849)
Deemed distribution of participant loans(768,002)(737,343)
Net Assets per Form 5500$1,458,049,074 $1,282,926,657 
 
The following is a reconciliation of the Changes in Net Assets Available for Benefits per the financial statements to Form 5500 for the year ended December 31, 2023:
 
Increase in Net Assets Available for Benefits per the financial statements
$172,617,165 
Adjustment from contract value to fair value for fully benefit-responsive stable value fund -December 31, 2023
(6,468,938)
Adjustment from contract value to fair value for fully benefit-responsive stable value fund - December 31, 2022
9,004,849 
Deemed distribution of participant loans - 2023
(768,002)
Deemed distribution of participant loans - 2022
737,343 
Net gain per the Form 5500
$175,122,417 

13

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
Common Stocks
MFS Large Capitalization Growth Equity FundUS Large Cap Stock Fund
ADOBE INC$250,572 
AGILENT TECH INC87,867 
AIR PRODUCTS & CHEMICALS214,659 
ALPHABET INC CL A2,142,565 
ALPHABET INC CL C597,966 
AMAZON.COM INC2,265,122 
AMETEK INC NEW417,007 
AMPHENOL CORPORATION CL A300,463 
AON PLC65,188 
APPLE INC2,000,772 
APPLIED MATERIALS INC188,001 
ARGENX SE SPONSORED ADR69,619 
ARTHUR J GALLAGHAR AND CO219,708 
ASML HLDG NV (NY REG SHS)541,198 
BECTON DICKINSON & CO155,807 
BOSTON SCIENTIFIC CORP668,457 
CADENCE DESIGN SYS INC619,914 
CANADIAN PACIFIC KANSAS C20,397 
CHIPOTLE MEXICAN GRILL IN70,896 
CME GROUP INC CL A162,373 
COLGATE-PALMOLIVE CO86,645 
COSTAR GROUP INC409,597 
DATADOG INC CL A69,187 
EATON CORP PLC503,314 
ELI LILLY & CO851,646 
ESTEE LAUDER COS INC CL A157,950 
GARTNER INC287,808 
HESS CORP59,250 
HILTON WORLDWIDE HLDGS IN395,499 
HOWMET AEROSPACE INC229,956 
ICON PLC128,797 
INTUIT INC447,521 
KKR & CO INC33,637 
KLA CORP298,207 
LAM RESEARCH CORP354,034 
LAS VEGAS SANDS CORP70,912 
LINDE PLC623,458 
LULULEMON ATHLETICA INC154,410 
LVMH MOET HENNESSY ADR336,434 
MARTIN MARIETTA MATERIALS151,170 
MARVELL TECH INC77,981 
14

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
MASTERCARD INC CL A1,331,991 
META PLATFORMS INC CL A1,564,857 
MICROSOFT CORP4,934,365 
MOODYS CORP33,588 
MSCI INC535,671 
NVIDIA CORP2,032,383 
O'REILLY AUTOMOTIVE INC246,071 
REGENERON PHARMACEUTICALS122,082 
ROCKWELL AUTOMATION INC181,320 
SHERWIN WILLIAMS CO229,247 
SPOTIFY TECH SA218,915 
STERIS PLC125,974 
SVCSNOW INC604,755 
SYNOPSYS INC522,119 
TAKE-TWO INTERACTV SOFTWR169,802 
THERMO FISHER SCIENTIFIC367,307 
TRANSUNION91,316 
UBER TECH INC303,294 
UNITEDHEALTH GROUP INC78,971 
VEEVA SYS INC CL A93,180 
VERISK ANALYTICS INC566,576 
VERTEX PHARMACEUTICALS IN636,783 
VISA INC CL A1,111,434 
VULCAN MATERIALS CO628,364 
ZOETIS INC CL A236,050 
SUBTOTAL$33,752,379 
Robeco Boston Partners Large Capitalization Value Equity FundUS Large Cap Stock Fund
ABBOTT LAB$486,840 
ADVANCED MICRO DEVICES IN443,557 
ALLEGION PLC235,770 
ALPHABET INC CL A1,034,684 
AMERICAN EXPRESS CO390,042 
AMGEN INC402,076 
AON PLC157,442 
APPLIED MATERIALS INC423,975 
ARES MANAGEMENT CORP CL A146,866 
ARTHUR J GALLAGHAR AND CO235,899 
AUTOZONE INC537,807 
AVANTOR INC337,268 
BERKSHIRE HATHAWAY INC CL1,154,152 
BOEING CO450,420 
BORGWARNER INC101,993 
15

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
BP PLC SPON ADR314,104 
BRISTOL-MYERS SQUIBB CO631,575 
BUILDERS FIRSTSOURCE118,694 
CANADIAN NATL RESOURCES L397,117 
CATERPILLAR INC159,662 
CENCORA INC459,846 
CENOVUS ENERGY INC400,882 
CENTENE CORP404,741 
CENTERPOINT ENERGY INC160,078 
CHUBB LTD320,920 
CIGNA GROUP (THE)404,557 
COCA-COLA EUROPACIFIC PAR261,754 
COGNIZANT TECH SOLUTIONS312,619 
CONOCOPHILLIPS493,878 
CRH PLC472,639 
DEERE & CO194,737 
DELL TECH INC CL C414,860 
DISCOVER FIN SVCS599,654 
DOVER CORP211,027 
DUPONT DE NEMOURS INC160,168 
EATON CORP PLC336,426 
FIRSTENERGY CORP254,457 
FLEETCOR TECH INC397,915 
FORTIVE CORP325,224 
GEN DYNAMICS CORPORATION544,268 
GLOBAL PAYMENTS INC444,119 
GOLDMAN SACHS GROUP INC376,126 
HALLIBURTON CO232,119 
HOWMET AEROSPACE INC362,983 
HUNTINGTON BANCSHARES INC171,631 
ICON PLC446,118 
INTERCONTINENTAL EXCHANGE327,625 
JACOBS SOLUTIONS INC274,916 
JPMORGAN CHASE & CO1,419,551 
KENVUE INC303,982 
KEURIG DR PEPPER INC336,399 
LAM RESEARCH CORP227,929 
LEIDOS HLDGS INC298,526 
LKQ CORP98,113 
MARATHON PETROLEUM CORP474,455 
MASCO CORPORATION306,300 
MCKESSON CORP356,958 
MGM RESORTS INTL276,793 
16

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
MICROCHIP TECH426,281 
MICRON TECH INC450,339 
MOHAWK INDU INC148,523 
MORGAN STANLEY785,538 
NICE LTD SPON ADR146,041 
NXP SEMICONDUCTORS NV101,978 
OLIN CORP135,468 
OMNICOM GROUP INC312,301 
ORACLE CORP466,001 
OTIS WORLDWIDE CORP135,547 
PEABODY ENERGY CORP154,140 
PHILIP MORRIS INTL INC610,579 
PHILLIPS 66339,374 
QUALCOMM INC154,465 
RAYTHEON TECH CORP341,608 
SANOFI SPON ADR609,889 
SCHLUMBERGER LTD371,409 
SCHWAB CHARLES CORP304,027 
SS&C TECH HLDGS INC155,464 
TAKE-TWO INTERACTV SOFTWR136,325 
TECK RESOURCES LTD SUB VT225,299 
THE BOOKING HLDGS INC297,966 
T-MOBILE US INC487,403 
ULTA BEAUTY INC190,606 
UNITED RENTALS INC546,469 
UNITEDHEALTH GROUP INC573,326 
US FOODS HLDGS CORP374,814 
WALMART INC536,798 
WARNER BROS DISCOVERY INC208,709 
WELLS FARGO & CO586,358 
WESCO INTL INC320,287 
WESTINGHOUSE AIR BRAKE TE302,022 
WHIRLPOOL CORP93,641 
WILLSCOT MOBILE MINI HLDG176,620 
SUBTOTAL$33,230,851 
Robeco Small/Mid Capitalization Value Equity FundUS Small/Mid Cap Stock Fund
ACUITY BRANDS INC$178,817 
AES CORP72,053 
AGCO CORP138,286 
17

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
ALIGHT INC CL A127,651 
ALLISON TRANSMISSION HLDG175,729 
AMEDISYS INC69,679 
AMERIS BANCORP97,028 
AMKOR TECH INC114,016 
AMN HEALTHCARE SVCS INC121,680 
APPLOVIN CORP107,197 
ARRAY TECH INC94,685 
ARROW ELECTRONICS INC110,759 
ASHLAND INC125,200 
ASSURANT INC100,589 
ASSURED GUARANTY LTD181,089 
ATKORE INC166,240 
AVANTOR INC125,930 
AVNET INC123,329 
AXIS CAPITAL HLDGS LTD141,692 
BEACON ROOFING SUPPLY INC259,320 
BELDEN INC64,813 
BELLRING BRANDS INC149,162 
BERKLEY (WR) CORP71,922 
BERKSHIRE HILLS BANCORP I46,333 
BGC GROUP INC A132,357 
BLOOMIN BRANDS INC97,765 
BLUE OWL CAPITAL INC A79,745 
BOWLERO CORP A200,279 
BOYD GAMING CORP178,188 
BRADY CORPORATION CL A116,265 
BRINKER INTL INC86,187 
BRINKS CO355,670 
BUCKLE INC (THE)89,338 
BUILDERS FIRSTSOURCE108,344 
CACTUS INC CL A70,461 
CALERES INC79,007 
CARLISLE COS INC102,477 
CARS.COM INC90,923 
CATALYST PHARMACEUTICALS94,422 
CBOE GLOBAL MARKETS INC163,561 
CHAMPIONX CORP79,685 
CHECK POINT SOFTWARE TECH235,144 
CHEMED CORP69,001 
CIENA CORP115,676 
CLEARFIELD INC100,442 
COHERENT CORP94,199 
18

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
CONCENTRIX CORP165,484 
CORECIVIC INC148,860 
COUSINS PROPERTIES INC65,331 
CURTISS WRIGHT CORPORATIO217,443 
DAVE & BUSTERS ENTMT INC108,185 
DIME COMMUNITY BANCSHARES65,171 
DROPBOX INC CL A121,517 
DUN & BRADSTREET HLDGS IN96,478 
EAST WEST BANCORP INC239,594 
ECOVYST INC115,999 
ELDORADO GOLD CORP119,778 
EMCOR GROUP INC194,533 
ENACT HLDGS INC77,165 
ENERPLUS CORP76,255 
ENERSYS INC157,498 
ESSENT GROUP LTD163,441 
ESSEX PROPERTY TR INC89,506 
EVERCORE INC A197,734 
EVEREST GROUP LTD167,243 
EXPEDIA INC99,574 
EXPRO GROUP HLDGS NV105,597 
EXTREME NETWORKS INC104,905 
FEDERAL AGRI MTG NON VTG243,423 
FIRST ADVANTAGE CORP124,706 
FIRST CITIZENS BANCSHARES66,692 
FIRST MERCHANTS CORP94,702 
FIRSTCASH HLDGS INC217,756 
FLEX LTD236,278 
FMC CORP NEW82,596 
FORTREA HLDGS INC137,087 
FRONTDOOR INC143,768 
FTI CONSULTING INC235,594 
GEN DIGITAL INC189,041 
GRANITE CONSTRUCTION INC143,985 
GRAPHIC PACKAGING HLDGS C150,932 
HAEMONETICS CORP MASS229,252 
HALOZYME THERAPEUTICS INC75,398 
HANCOCK WHITNEY CORP120,260 
HENRY SCHEIN INC98,423 
HERITAGE COMMERCE CORP82,653 
HF SINCLAIR CORP93,969 
HUB GROUP INC CL A96,997 
HUNTINGTON BANCSHARES INC132,364 
19

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
ICON PLC367,425 
INGREDION INC120,251 
INSIGHT ENTERPRISES INC90,190 
INTERDIGITAL INC190,922 
INTERPUBLIC GROUP OF COS134,150 
INTL GAME TECH PLC19,872 
JABIL INC115,934 
JACOBS SOLUTIONS INC136,550 
JEFFERIES FIN GROUP INC99,368 
JUNIPER NETWORKS INC84,195 
KOSMOS ENERGY LTD89,981 
LAMAR ADVERTISING CO CL A113,932 
LAMB WESTON HLDGS INC114,900 
LANDSTAR SYS INC53,254 
LANTHEUS HLDGS INC135,346 
LAUREATE EDUCATION INC251,798 
LCI INDU127,596 
LEGALZOOM.COM INC153,465 
LEONARDO DRS INC151,062 
LITHIA MOTORS INC CL A304,255 
LIVE NATION ENTERTAINMENT74,786 
LKQ CORP52,091 
LPL FINL HLDGS INC137,255 
MASONITE WORLDWIDE HLDGS112,175 
MATCH GROUP INC81,724 
METHANEX CORP72,508 
MGM RESORTS INTL95,392 
MIDDLEBY CORP84,770 
MOLINA HEALTHCARE INC121,039 
MOLSON COORS BEVERAGE CO74,064 
NCR ATLEOS CORP44,961 
NCR VOYIX CORP62,601 
NETAPP INC133,033 
NEW JERSEY RESOURCES CORP47,344 
NEXSTAR MEDIA GROUP INC208,948 
NISOURCE INC94,624 
NOBLE CORP PLC174,965 
NOMAD FOODS LTD92,022 
NOW INC61,920 
OLD NATIONAL BANCORP (IND147,838 
PAR PACIFIC HLDGS INC159,410 
PATTERSON-UTI ENERGY INC51,872 
PEAPACK GLADSTONE FINL CO58,060 
20

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
PEDIATRIX MEDICAL GROUP I49,430 
PEGASYS INC61,808 
PENNYMAC FIN SVCS INC124,955 
PERFORMANCE FOOD GROUP CO97,778 
PERRIGO CO PLC37,683 
*PINNACLE WEST CAPITAL COR83,478 
PORTLAND GEN ELECTRIC CO48,888 
PREFERRED BANK LOS ANGELE109,356 
PROPETRO HLDGS CORP63,185 
QORVO INC122,294 
QUIDELORTHO CORP66,625 
RALPH LAUREN CORP105,266 
RANGE RESOURCES CORP81,518 
RENAISSANCERE HLDGS LTD136,612 
SCIENCE APPLICATIONS INTL216,068 
SELECT WATER SOLUTIONS IN59,688 
SENSATA TECH HLDGS PLC95,841 
SHARKNINJA INC74,197 
SIMPLY GOOD FOODS CO89,258 
SKYWORKS SOLUTIONS INC58,234 
SLM CORP441,232 
SOUTHSTATE CORP177,345 
SS&C TECH HLDGS INC78,587 
STEVEN MADDEN LTD218,064 
STRIDE INC69,878 
TD SYNNEX CORP263,537 
TEGNA INC207,483 
TEMPUR SEALY INTL INC198,987 
TEXTRON INC179,015 
THOR INDU INC84,194 
TIDEWATER INC90,642 
TOPGOLF CALLAWAY BRANDS C86,370 
TRINET GROUP INC94,906 
UNIVERSAL HEALTH SVCS INC99,696 
US FOODS HLDGS CORP175,600 
US SILICA HLDGS INC57,715 
VALMONT INDU INC111,151 
VECTOR GROUP LTD72,305 
VIPER ENERGY INC182,412 
VIVID SEATS INC-CL A74,639 
VOYA FIN INC186,340 
WALKER & DUNLOP INC105,237 
WEATHERFORD INTL PLC216,400 
21

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
WEBSTER FIN84,769 
WESCO INTL INC365,496 
WESTERN ALLIANCE BANCORP268,028 
WEX INC86,186 
WHITE MOUNTAINS INS GROUP112,876 
WINTR FIN CORP199,320 
WORLD KINECT CORP77,926 
SUBTOTAL$23,141,848 
Total common stocks$90,125,078 
Common and Collective Trusts   
Blackrock US Debt Index NL Fund MUS Bond Index$148,269,634 
Northern Trust Collective 1-10 Yr Treasury Inflation-Protected Securities (TIPS) Index Fund - NL - Tier Three Diversified Inflation Fund38,925,429
SSgA Global All Cap Equity Ex US Index Non-Lending Series Fund Class ANon-US Stock Index161,134,296
SSgA S&P 500 Index Non-Lending Series Fund Class AUS Large Cap Stock Fund/Index395,843,671
SSgA Russell Small/Mid Cap Index Non-Lending Series Fund
Class A
US Small/Mid Cap Stock Fund/Index109,294,049
William Blair Small/Mid Cap Growth Collective FundUS Small/Mid Cap Stock Fund21,975,216
Total common and collective trusts  $875,442,295 
    
Mutual Funds   
*Fidelity Institutional Money Market: Government Portfolio - Class IShort-Term Investments*** $2,846,838 
*Fidelity Institutional Money Market: Treasury Portfolio - Class IShort-Term Investments*** 604,662
Federated Treasury Obligations Fund - Institutional SharesShort-Term Investments*** 101,397
American Funds EuroPacific Growth Fund R6 SharesNon-US Stock Fund 119,616,596
Dodge & Cox Income Fund 1 SharesBond Fund 34,563,800
Metropolitan West Total Return Bond Fund Institutional SharesBond Fund 34,172,599
Total mutual funds  $191,905,892 
    
SGICsStable Value Fund  
RGA Reinsurance Co yield 2.571%   
Morley Stable Income Bond Fund Common and Collective Trust  $38,291,035 
Principal Life Ins Co yield 2.472%
Morley Stable Income Bond Fund Common and Collective Trust34,125,041
Transamerica Premier Life Ins Co yield 2.580%
Morley Stable Income Bond Fund Common and Collective Trust37,865,066
Total SGICs  $110,281,142 
    
Other Investments   
*Pinnacle West Common StockPinnacle West Stock Fund $47,548,166 
22

FORM 5500, SCHEDULE H, PART IV, LINE 4i
PLAN # 002 EIN # 86-0512431
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
(a)(b) Identity of Issuer, Borrower, Lessor, or Similar Party(c) Description(d) Cost**(e) Current Value
Self-Directed Brokerage AccountSelf-Directed Brokerage Account 111,782,374
BBH STIF FundShort-Term Investments***1,811,399
*Various participants****Participant loans 20,950,219
Total other investments  $182,092,158 
    
Total Assets Held for Investment Purposes  $1,449,846,565 



*Party-in-interest
**Cost information is not required for participant-directed investments and therefore is not included.
***Short-Term Investments represent $2,846,838 held in the Stable Value Fund, $1,811,399 in the US Small/Mid Cap Stock Fund and US Large Cap Stock Fund, $604,662 in the Pinnacle West Stock Fund and $101,397 in the Treasury Fund.
****Interest rates for participant loans as of December 31, 2023, ranged from 4.25% to 9.50% with maturity dates ranging from 2023 to 2038. Presented net of $768,002 in deemed loan distributions.


23


Exhibit Filed
 

24


SIGNATURE
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the Committee has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
 
 
  THE PINNACLE WEST CAPITAL
  CORPORATION SAVINGS PLAN
    
    
Date:June 14, 2024By/s/ Shannon Standaert
   Shannon Standaert
   Senior Vice President Human Resources & Ethics
   Arizona Public Service Company

25
EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-157151 on Form S-8 of our report dated June 14, 2024, relating to the financial statements and supplemental schedule of The Pinnacle West Capital Corporation Savings Plan appearing in this Annual Report on Form 11-K for the year ended December 31, 2023.

/s/ DELOITTE & TOUCHE LLP
Tempe, Arizona
June 14, 2024




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