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PNW · Current Report (Form 8-K) · Filed May 6, 2026

Pinnacle West Capital Corp — Current Report (Form 8-K)

Form
8-K
Filed
May 6, 2026
Period
May 6, 2026
Ticker
PNW
Accession
0000764622-26-000029
Boardroom Alpha · Filing insights

Pinnacle West and APS will present handouts at May 2026 investor meetings; materials will be shared with investors.

About Pinnacle West Capital Corp
Market cap
$12.0B
1Y TSR
+16.7%
3Y TSR
+12.2%
Board grade
C+
Sector
Utilities
CEO
Theodore N Geisler
Last annual meeting: May 14, 2026 · View full Pinnacle West Capital Corp profile →
pnw-20260506

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549 
 
FORM 8-K 
 
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of report (Date of earliest event reported):
May 6, 2026
Commission File
Number
 Exact Name of Registrant as Specified in
Charter; State or Other Jurisdiction of Incorporation; Address of Principal Executive Officers, and Zip Code; and
Registrant's telephone Number, Including Area Code)
IRS Employer
Identification No.
1-8962 PINNACLE WEST CAPITAL CORPORATION86-0512431
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
PhoenixArizona85072-3999
(602)250-1000
1-4473 ARIZONA PUBLIC SERVICE COMPANY86-0011170
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
PhoenixArizona85072-3999
(602)250-1000
Not Applicable
(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common Stock, no par value
PNW
New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).
Emerging growth company

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

This combined Form 8-K is separately filed or furnished by Pinnacle West Capital Corporation and Arizona Public Service Company. Each registrant is filing or furnishing on its own behalf all of the information contained in this Form 8-K that relates to such registrant and, where required, its subsidiaries. Except as stated in the preceding sentence, neither registrant is filing or furnishing any information that does not relate to such registrant, and therefore makes no representation as to any such information.






Item 7.01    Regulation FD Disclosure.

Pinnacle West Capital Corporation (“Pinnacle West”) will be participating in various meetings with securities analysts and investors in May 2026 and will be utilizing handouts during those meetings. Copies of the handouts are attached hereto as Exhibit 99.1.

Item 9.01    Financial Statements and Exhibits.

    (d)    Exhibits
Exhibit No.Registrant(s)Description
99.1Pinnacle West
Arizona Public Service Company
104Pinnacle West
Arizona Public Service Company
104 Cover Page Interactive Data File (embedded within the Inline XBRL document)



SIGNATURES


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


PINNACLE WEST CAPITAL CORPORATION
(Registrant)
Dated: May 6, 2026By: /s/ Andrew Cooper
Andrew Cooper
Senior Vice President and
Chief Financial Officer
ARIZONA PUBLIC SERVICE COMPANY
(Registrant)
Dated: May 6, 2026By: /s/ Andrew Cooper
Andrew Cooper
Senior Vice President and
Chief Financial Officer

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Reference

Frequently asked questions

When did Pinnacle West Capital Corp file this 8-K?
Pinnacle West Capital Corp (PNW) filed this Current Report (Form 8-K) with the SEC on May 6, 2026. The accession number assigned by EDGAR is 0000764622-26-000029.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Pinnacle West and APS will present handouts at May 2026 investor meetings; materials will be shared with investors. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Pinnacle West Capital Corp's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Pinnacle West Capital Corp has filed under CIK 764622, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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