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    SEC Form 11-K filed by Pinnacle West Capital Corporation

    6/14/24 4:29:04 PM ET
    $PNW
    Electric Utilities: Central
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    11-K 1 a11-k123123.htm 11-K Document

    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
     
     PAGE
      
    REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
    1
      
    FINANCIAL STATEMENTS: 
      
    Statements of Net Assets Available for Benefits as of December 31, 2023 and 2022
    2
      
    Statement of Changes in Net Assets Available for Benefits for the Year Ended December 31, 2023
    3
      
    Notes to the Financial Statements as of December 31, 2023 and 2022 and for the Year Ended December 31, 2023
    4
      
    SUPPLEMENTAL SCHEDULE - 
      
    Form 5500, Schedule H, Part IV, Line 4i— Schedule of Assets (Held at End of Year) as of December 31, 2023
    14
      
    EXHIBIT FILED
    24
      
    SIGNATURE
    25
     
    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.

    2


    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.

    3


    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.
     
    4


    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)*
    5


    •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
    6


    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
    7


    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
    8


    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
    9


    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.
     
    10


    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.

    11


    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.

     
    12


    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
     
    Exhibit No. Description
       
    23.1 
    Consent of Independent Registered Public Accounting Firm

    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
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    10/28/2025$99.00Sector Perform
    RBC Capital Mkts
    10/28/2025$92.00Equal Weight
    Wells Fargo
    10/16/2025$97.00Hold
    TD Cowen
    9/9/2025$90.00Outperform → Neutral
    Mizuho
    5/13/2025$95.00Market Perform
    BMO Capital Markets
    12/4/2024$101.00Sector Weight → Overweight
    KeyBanc Capital Markets
    11/18/2024$93.00 → $91.00Overweight → Equal Weight
    Barclays
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    $PNW
    Analyst Ratings

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    Pinnacle West downgraded by KeyBanc Capital Markets

    KeyBanc Capital Markets downgraded Pinnacle West from Overweight to Sector Weight

    12/12/25 8:42:58 AM ET
    $PNW
    Electric Utilities: Central
    Utilities

    RBC Capital Mkts resumed coverage on Pinnacle West with a new price target

    RBC Capital Mkts resumed coverage of Pinnacle West with a rating of Sector Perform and set a new price target of $99.00

    10/28/25 8:15:56 AM ET
    $PNW
    Electric Utilities: Central
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    Wells Fargo initiated coverage on Pinnacle West with a new price target

    Wells Fargo initiated coverage of Pinnacle West with a rating of Equal Weight and set a new price target of $92.00

    10/28/25 8:15:56 AM ET
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    Insider Purchases

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    Director Flanagan Susan T. bought $43,270 worth of shares (500 units at $86.54), increasing direct ownership by 200% to 750 units (SEC Form 4)

    4 - PINNACLE WEST CAPITAL CORP (0000764622) (Issuer)

    10/24/24 11:24:41 AM ET
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    Pinnacle West Capital Corporation filed SEC Form 8-K: Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation, Leadership Update, Financial Statements and Exhibits

    8-K - PINNACLE WEST CAPITAL CORP (0000764622) (Filer)

    2/19/26 5:07:05 PM ET
    $PNW
    Electric Utilities: Central
    Utilities

    Amendment: SEC Form SCHEDULE 13G/A filed by Pinnacle West Capital Corporation

    SCHEDULE 13G/A - PINNACLE WEST CAPITAL CORP (0000764622) (Subject)

    2/12/26 10:25:43 AM ET
    $PNW
    Electric Utilities: Central
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    SEC Form SCHEDULE 13G filed by Pinnacle West Capital Corporation

    SCHEDULE 13G - PINNACLE WEST CAPITAL CORP (0000764622) (Subject)

    2/11/26 3:43:06 PM ET
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    Electric Utilities: Central
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    SEC Form 4 filed by EVP, COO, APS Tetlow Jacob

    4 - PINNACLE WEST CAPITAL CORP (0000764622) (Issuer)

    2/19/26 4:55:11 PM ET
    $PNW
    Electric Utilities: Central
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    SEC Form 4 filed by EVP & CNO, APS Heflin Adam C

    4 - PINNACLE WEST CAPITAL CORP (0000764622) (Issuer)

    2/19/26 4:53:08 PM ET
    $PNW
    Electric Utilities: Central
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    SEC Form 4 filed by Chairman, CEO and President Geisler Theodore N

    4 - PINNACLE WEST CAPITAL CORP (0000764622) (Issuer)

    2/19/26 4:50:01 PM ET
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    Pinnacle West Sets Date for 2025 Fourth-Quarter and Full-Year Financial Results, Webcast/Conference Call

    Pinnacle West Capital Corp. (NYSE:PNW) announced today that it plans to release its 2025 fourth-quarter and full-year financial results before the U.S. financial markets open on Wednesday, Feb. 25, 2026. That same day at 11 a.m. ET (9 a.m. Arizona time), management will host a live webcast and conference call to discuss financial results and recent developments. To access the live session: Join the webcast at www.pinnaclewest.com/presentations for audio of the call and slides; or Dial (888) 506-0062 or (973) 528-0011 for international callers and enter participant access code 131060. To access the replay: Visit www.pinnaclewest.com/presentations within 30 days for the webcas

    1/26/26 4:30:00 PM ET
    $PNW
    Electric Utilities: Central
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    Pinnacle West Declares Quarterly Dividend

    Pinnacle West Capital Corporation's (NYSE:PNW) board of directors today declared a quarterly dividend of $0.91 per share of common stock, payable on March 2, 2026, to shareholders of record at the close of business on Feb. 2, 2026. Pinnacle West Capital Corp., an energy holding company based in Phoenix, has consolidated assets of nearly $30 billion, about 6,500 megawatts of generating capacity and approximately 6,400 employees in Arizona and New Mexico. Through its principal subsidiary, Arizona Public Service, the company provides retail electricity service to about 1.4 million Arizona homes and businesses. For more information about Pinnacle West, visit the company's website at pinnaclewe

    12/10/25 4:06:00 PM ET
    $PNW
    Electric Utilities: Central
    Utilities

    Pinnacle West Reports 2025 Third-Quarter Financial Results

    Customer growth, summer heat drive increase in sales and usage Operating performance, customer reliability remain strong Company expands support for community and utility bill assistance programs Pinnacle West Capital Corp. (NYSE:PNW) today reported consolidated net income attributable to common shareholders for the 2025 third quarter of $413.2 million, or $3.39 per diluted share of common stock. This result compares with consolidated net income of $395.0 million, or $3.37 per share of common stock, for the same period a year ago. However, through the first three quarters of the current year, the company's earnings were 2.4% lower than in the first nine months of 2024. The 2025

    11/3/25 8:31:00 AM ET
    $PNW
    Electric Utilities: Central
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    Pinnacle West Appoints Three New Members to its Board of Directors

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    6/20/24 4:30:00 PM ET
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    APS Appoints Heflin to Lead Operations at Palo Verde Generating Station

    Arizona Public Service Co. (APS) announced today that Adam Heflin has been named Executive Vice President and Chief Nuclear Officer (CNO) at the Palo Verde Generating Station, effective June 6. Heflin succeeds Maria Lacal, who recently announced her intent to retire after a distinguished 41-year career in the commercial nuclear industry. Heflin previously served as Chief Executive Officer (CEO) and CNO of the Wolf Creek Nuclear Operating Corporation in Kansas until his retirement in 2019. Prior to that, he was the CNO at Ameren's Callaway Energy Center in Missouri. Heflin worked with Palo Verde this year as part of its Offsite Safety Review Committee and has served on the board of the STAR

    5/24/22 9:15:00 AM ET
    $PNW
    Electric Utilities: Central
    Utilities

    Orion Group Holdings, Inc. Announces Board of Director Changes

    New Director Appointed; One Director Announces Retirement Orion Group Holdings, Inc. (NYSE:ORN) (the "Company") a leading specialty construction company, today announced the appointment of Quentin P. Smith, Jr. to the Board of Directors, as well as the retirement of Richard L. Daerr, Jr. as a board member. The Board's appointment of Mr. Smith to the Board of Directors is effective January 21, 2022. His initial term will expire at the 2022 annual meeting of stockholders, at which time the Board will propose Mr. Smith for re-election as a Class II Director to serve until the 2024 annual meeting of stockholders. In addition, Richard L. Daerr, Jr. has announced his retirement from the Board e

    1/25/22 8:30:00 AM ET
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    Pinnacle West Sets Date for 2025 Fourth-Quarter and Full-Year Financial Results, Webcast/Conference Call

    Pinnacle West Capital Corp. (NYSE:PNW) announced today that it plans to release its 2025 fourth-quarter and full-year financial results before the U.S. financial markets open on Wednesday, Feb. 25, 2026. That same day at 11 a.m. ET (9 a.m. Arizona time), management will host a live webcast and conference call to discuss financial results and recent developments. To access the live session: Join the webcast at www.pinnaclewest.com/presentations for audio of the call and slides; or Dial (888) 506-0062 or (973) 528-0011 for international callers and enter participant access code 131060. To access the replay: Visit www.pinnaclewest.com/presentations within 30 days for the webcas

    1/26/26 4:30:00 PM ET
    $PNW
    Electric Utilities: Central
    Utilities

    Pinnacle West Declares Quarterly Dividend

    Pinnacle West Capital Corporation's (NYSE:PNW) board of directors today declared a quarterly dividend of $0.91 per share of common stock, payable on March 2, 2026, to shareholders of record at the close of business on Feb. 2, 2026. Pinnacle West Capital Corp., an energy holding company based in Phoenix, has consolidated assets of nearly $30 billion, about 6,500 megawatts of generating capacity and approximately 6,400 employees in Arizona and New Mexico. Through its principal subsidiary, Arizona Public Service, the company provides retail electricity service to about 1.4 million Arizona homes and businesses. For more information about Pinnacle West, visit the company's website at pinnaclewe

    12/10/25 4:06:00 PM ET
    $PNW
    Electric Utilities: Central
    Utilities

    Pinnacle West Reports 2025 Third-Quarter Financial Results

    Customer growth, summer heat drive increase in sales and usage Operating performance, customer reliability remain strong Company expands support for community and utility bill assistance programs Pinnacle West Capital Corp. (NYSE:PNW) today reported consolidated net income attributable to common shareholders for the 2025 third quarter of $413.2 million, or $3.39 per diluted share of common stock. This result compares with consolidated net income of $395.0 million, or $3.37 per share of common stock, for the same period a year ago. However, through the first three quarters of the current year, the company's earnings were 2.4% lower than in the first nine months of 2024. The 2025

    11/3/25 8:31:00 AM ET
    $PNW
    Electric Utilities: Central
    Utilities

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    SEC Form SC 13G filed by Pinnacle West Capital Corporation

    SC 13G - PINNACLE WEST CAPITAL CORP (0000764622) (Subject)

    11/13/24 4:11:02 PM ET
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    Electric Utilities: Central
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    Amendment: SEC Form SC 13G/A filed by Pinnacle West Capital Corporation

    SC 13G/A - PINNACLE WEST CAPITAL CORP (0000764622) (Subject)

    11/12/24 12:54:20 PM ET
    $PNW
    Electric Utilities: Central
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    SEC Form SC 13G/A filed by Pinnacle West Capital Corporation (Amendment)

    SC 13G/A - PINNACLE WEST CAPITAL CORP (0000764622) (Subject)

    3/8/24 11:16:13 AM ET
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