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 19, 2026. The accession number assigned by EDGAR is 0001628280-26-036111.

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?

Shareholders elected ten directors for 1-year terms, approved executive compensation, and ratified Deloitte as auditor. 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.

Boardroom Alpha

PNW · Current Report (Form 8-K) · Filed May 19, 2026

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

Form

8-K

Filed

May 19, 2026

Period

May 14, 2026

Ticker

PNW

Accession

0001628280-26-036111

Pinnacle West Capital Corp on Boardroom Alpha View on SEC EDGAR

Boardroom Alpha · Filing insights

Shareholders elected ten directors for 1-year terms, approved executive compensation, and ratified Deloitte as auditor.

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-20260514

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 14, 2026

Commission File
Number

Exact Name of Each Registrant as specified in its
charter; State of Incorporation; Address; and
Telephone Number

IRS Employer
Identification No.

1-8962

PINNACLE WEST CAPITAL CORPORATION

86-0512431

(an Arizona corporation)

400 North Fifth Street, P.O. Box 53999

Phoenix

Arizona

85072-3999

(602)

250-1000

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	PNW	The 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.

Item 5.07. Submission of Matters to a Vote of Security Holders.

On May 14, 2026, at the Annual Meeting of Shareholders (the “Annual Meeting”) of Pinnacle West Capital Corporation (the “Company”) the shareholders voted on three proposals. The final voting results are as follows:

Proposal 1. The shareholders elected the ten directors nominated for one-year terms that will expire at the 2027 Annual Meeting. The voting results are set forth below:


	FOR	WITHHELD	BROKER NON-VOTE
Glynis A. Bryan	95,980,735	5,797,567	8,715,982
Ronald Butler, Jr.	100,311,768	1,466,534	8,715,982
Gonzalo A. de la Melena, Jr.	101,017,705	760,597	8,715,982
Carol S. Eicher	101,082,932	695,370	8,715,982
Susan T. Flanagan	101,130,922	647,380	8,715,982
Theodore N. Geisler	99,949,964	1,828,338	8,715,982
Paula J. Sims	100,227,092	1,551,210	8,715,982
William H. Spence	99,571,841	2,206,461	8,715,982
Kristine L. Svinicki	101,120,407	657,895	8,715,982
James E. Trevathan, Jr.	100,555,351	1,222,951	8,715,982

Proposal 2. The shareholders approved an advisory vote on executive compensation. The voting results are set forth below:


FOR	AGAINST	ABSTENTIONS	BROKER NON-VOTES
98,755,016	2,750,428	272,858	8,715,982

Proposal 3. The shareholders ratified the appointment of Deloitte & Touche LLP as the Company’s independent accountant for the year ending December 31, 2026. The voting results are set forth below:


FOR	AGAINST	ABSTENTIONS
107,509,825	2,819,186	165,273

SIGNATURES

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


						PINNACLE WEST CAPITAL CORPORATION
						(Registrant)

Dated: May 18, 2026						/s/ Shirley A. Baum
						Shirley A. Baum
						Senior Vice President, General Counsel and Corporate Secretary

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More filings

Other filings from Pinnacle West Capital Corp (PNW)

8-KCurrent Report
May 6, 2026
8-KCurrent Report
May 4, 2026
10-QQuarterly Report
May 4, 2026
8-KCurrent Report
Apr 15, 2026
DEFA14AAdditional Proxy Materials
Apr 3, 2026
DEF 14AProxy Statement
Apr 3, 2026
8-KCurrent Report
Mar 12, 2026
8-KCurrent Report
Feb 27, 2026
10-KAnnual Report
Feb 25, 2026
8-KCurrent Report
Feb 25, 2026
8-KCurrent Report
Feb 19, 2026
8-KCurrent Report
Nov 7, 2025

Continue researching

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 19, 2026. The accession number assigned by EDGAR is 0001628280-26-036111.
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?: Shareholders elected ten directors for 1-year terms, approved executive compensation, and ratified Deloitte as auditor. 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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