# EDGAR Filing Document

**Accession Number:** 0000764622
**File Stem:** 0001104659-26-071021
**Filing Date:** 2026-6
**Character Count:** 14419
**Document Hash:** 695647b06ba5b2eb6e9c21ef3c68c40c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-071021.hdr.sgml**: 20260605

**ACCESSION NUMBER**: 0001104659-26-071021

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260605

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260605

**DATE AS OF CHANGE**: 20260605

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PINNACLE WEST CAPITAL CORP
- **CENTRAL INDEX KEY:** 0000764622
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 860512431
- **STATE OF INCORPORATION:** AZ
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-08962
- **FILM NUMBER:** 261069898

**BUSINESS ADDRESS:**
- **STREET 1:** 400 NORTH FIFTH STREET
- **STREET 2:** MS 8695
- **CITY:** PHOENIX
- **STATE:** AZ
- **ZIP:** 85004
- **BUSINESS PHONE:** 602 250 1000

**MAIL ADDRESS:**
- **STREET 1:** 400 NORTH FIFTH STREET
- **STREET 2:** MS 8695
- **CITY:** PHOENIX
- **STATE:** AZ
- **ZIP:** 85004

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AZP GROUP INC
- **DATE OF NAME CHANGE:** 19870506

?xml version='1.0' encoding='ASCII'?

**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**

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| | |
|:---|:---|
| **Date of report (Date of earliest event reported):** | June 5, 2026 |

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| | | | |
|:---|:---|:---|:---|
| **Commission File**<br> **Number** | **Exact Name of Registrant as Specified in <br> Charter; State or Other Jurisdiction of Incorporation; Address of Principal<br> Executive Offices, and Zip Code; and<br> Telephone Number, Including Area Code)** | **Exact Name of Registrant as Specified in <br> Charter; State or Other Jurisdiction of Incorporation; Address of Principal<br> Executive Offices, and Zip Code; and<br> Telephone Number, Including Area Code)** | **IRS Employer**<br> **Identification No.** |
| 1-8962 | **PINNACLE WEST CAPITAL CORPORATION** | **PINNACLE WEST CAPITAL CORPORATION** | 86-0512431 |
|  | (an Arizona corporation) | (an Arizona corporation) |  |
|  | 400 North Fifth Street, P.O. Box 53999 | 400 North Fifth Street, P.O. Box 53999 |  |
|  | Phoenix Arizona | 85072-3999 |  |
|  | (602) 250-1000 |  |  |

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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 (see General Instruction A.2. below):

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| |
|:---|
| 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)) |

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Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Common Stock | PNW | The New York Stock Exchange |

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

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| | |
|:---|:---|
| **Item 8.01.** | **Other Events.** |

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On June 5, 2026, Pinnacle West Capital Corporation (the "Company") entered into the First Amendment (the "First Amendment") to the Equity Distribution Agreement, dated November 8, 2024 (as amended by the First Amendment, the "Equity Distribution Agreement") with Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., TD Securities (USA) LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC, as managers, Barclays Bank PLC, Bank of America, N.A., JPMorgan Chase Bank, National Association, Mizuho Markets Americas LLC, MUFG Securities EMEA plc, The Toronto-Dominion Bank, Truist Bank and Wells Fargo Bank, National Association or one or more of their respective affiliates, as forward purchasers, and Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., TD Securities (USA) LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC, as forward sellers, relating to the offer and sale from time to time of shares of the Company's common stock, no par value, having an aggregate gross sales price of up to $900,000,000 (the "Shares") in "at-the-market" offerings.

The First Amendment amended Section 2(b)(v) of the Equity Distribution Agreement to replace the 18-month outside maturity period for forward sale agreements with a 24-month outside maturity period. The First Amendment did not modify the maximum aggregate gross sales price, the parties, the commission rates or the other terms of the Equity Distribution Agreement.

Under the Equity Distribution Agreement, Shares having an aggregate gross sales price of approximately $630 million have been offered and sold through June 5, 2026. As a result of such prior sales, Shares having an aggregate gross sales price of up to approximately $270 million remain available for offer and sale under the Equity Distribution Agreement.

The offer and sale of the Shares have been registered under the Securities Act of 1933, as amended, pursuant to a Registration Statement on Form S-3 (Registration No. 333-277448) of the Company, as supplemented by the Prospectus Supplement, dated June 5, 2026, relating to the Shares.

The summary of the First Amendment set forth in this Item 8.01 does not purport to be complete and is qualified by reference to such amendment, which is filed as Exhibit 1.1 hereto and is incorporated herein by reference.

This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy the Shares and shall not constitute an offer, solicitation or sale in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

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| | |
|:---|:---|
| **Item 9.01.** | **Financial Statements and Exhibits.** |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*(d) Exhibits.*

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| | |
|:---|:---|
| **EXHIBIT<br> NUMBER** | **EXHIBIT DESCRIPTION** |
| [1.1](tm2616952d1_ex1-1.htm) | [First Amendment to Equity Distribution Agreement, dated June 5, 2026, among Pinnacle West Capital Corporation and Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., TD Securities (USA) LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC, as managers, Barclays Bank PLC, Bank of America, N.A., JPMorgan Chase Bank, National Association, Mizuho Markets Americas LLC, MUFG Securities EMEA plc, The Toronto-Dominion Bank, Truist Bank and Wells Fargo Bank, National Association or one or more of their respective affiliates, as forward purchasers, and Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., TD Securities (USA) LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC, as forward sellers.](tm2616952d1_ex1-1.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

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**SIGNATURE**

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.

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| | | |
|:---|:---|:---|
|  | **PINNACLE WEST CAPITAL CORPORATION** | **PINNACLE WEST CAPITAL CORPORATION** |
| Date: June 5, 2026 | By: | /s/ Andrew Cooper |
|  |  | Andrew Cooper |
|  |  | Senior Vice President and Chief Financial Officer |

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## Exhibit 1.1

**Exhibit 1.1**

**PINNACLE WEST CAPITAL CORPORATION<br> COMMON STOCK (NO PAR VALUE)<br> FIRST AMENDMENT TO EQUITY DISTRIBUTION AGREEMENT<br> (this "Amendment")**

June 5, 2026

Reference is hereby made to that certain Equity Distribution Agreement dated November 8, 2024 among Pinnacle West Capital Corporation, an Arizona corporation (the "**Company**"), and the other parties hereto (the "**Agreement**").

The parties hereto agree to amend the Agreement by:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) changing "eighteen (18)" to "twenty-four (24)" in Section 2(b)(v) of the Agreement; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) revising any reference to the Agreement to mean the Agreement as amended by this Amendment.

Except as specifically provided herein, the Agreement shall remain in full force and effect in accordance with its terms and is hereby ratified and confirmed in all respects. This Amendment is limited as specified, and the execution, delivery and effectiveness of this Amendment shall not operate as a modification, acceptance or waiver of any provision of the Agreement except as specifically set forth herein. From and after the date of this Amendment, the Agreement shall be deemed amended hereby.

This Amendment and any claim, controversy or dispute arising under or related to this Amendment shall be governed by and construed in accordance with the laws of the State of New York.

{*Signature pages follow*}

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| | | |
|:---|:---|:---|
| Very truly yours, | Very truly yours, | Very truly yours, |
| PINNACLE WEST CAPITAL CORPORATION | PINNACLE WEST CAPITAL CORPORATION | PINNACLE WEST CAPITAL CORPORATION |
| By: | /s/ Andrew Cooper | /s/ Andrew Cooper |
|  | Name: | Andrew Cooper |
|  | Title: | Senior Vice President and Chief Financial Officer |

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*{Signature Page to First Amendment to Equity Distribution Agreement}*

Accepted as of the date first written above

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| | |
|:---|:---|
| BOFA SECURITIES, INC. | BOFA SECURITIES, INC. |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Patrick Boultinghouse |
|  | Name: Patrick Boultinghouse |
|  | Title: Managing Director |
| BARCLAYS CAPITAL INC. | BARCLAYS CAPITAL INC. |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Gabrielle LeBlanc |
|  | Name: Gabrielle LeBlanc |
|  | Title: Director |
| J.P. MORGAN SECURITIES LLC | J.P. MORGAN SECURITIES LLC |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Preston Ryman |
|  | Name: Preston Ryman |
|  | Title: Vice President |
| MIZUHO SECURITIES USA LLC | MIZUHO SECURITIES USA LLC |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ James Watts |
|  | Name: James Watts |
|  | Title: Managing Director |
| MUFG SECURITIES AMERICAS INC. | MUFG SECURITIES AMERICAS INC. |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Geoffrey Paul |
|  | Name: Geoffrey Paul |
|  | Title: Managing Director |

---

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| | |
|:---|:---|
| BANK OF AMERICA, N.A. | BANK OF AMERICA, N.A. |
| &nbsp;&nbsp;&nbsp;As Forward Purchaser | &nbsp;&nbsp;&nbsp;As Forward Purchaser |
| By: | /s/ Jake Mendelsohn |
|  | Name: Jake Mendelsohn |
|  | Title: Managing Director |
| BARCLAYS BANK PLC | BARCLAYS BANK PLC |
| &nbsp;&nbsp;&nbsp;As Forward Purchaser | &nbsp;&nbsp;&nbsp;As Forward Purchaser |
| By: | /s/ Kevin Cheng |
|  | Name: Kevin Cheng |
|  | Title: Managing Director |
| JPMorgan Chase Bank, National Association | JPMorgan Chase Bank, National Association |
| &nbsp;&nbsp;&nbsp;As Forward Purchaser | &nbsp;&nbsp;&nbsp;As Forward Purchaser |
| By: | /s/ Preston Ryman |
|  | Name: Preston Ryman |
|  | Title: Vice President |
| MIZUHO MARKETS AMERICAS LLC | MIZUHO MARKETS AMERICAS LLC |
| &nbsp;&nbsp;&nbsp;As Forward Purchaser | &nbsp;&nbsp;&nbsp;As Forward Purchaser |
| By: | /s/ Matthew Chiavaroli |
|  | Name: Matthew Chiavaroli |
|  | Title: Managing Director |
| MUFG SECURITIES EMEA PLC | MUFG SECURITIES EMEA PLC |
| &nbsp;&nbsp;&nbsp;As Forward Purchaser | &nbsp;&nbsp;&nbsp;As Forward Purchaser |
| By: | /s/ Catherine Lucas |
|  | Name: Catherine Lucas |
|  | Title: Authorised Signatory |

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*{Signature Page to First Amendment to Equity Distribution Agreement}*

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| | |
|:---|:---|
| TD SECURITIES (USA) LLC | TD SECURITIES (USA) LLC |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Michael Murphy |
|  | Name: Michael Murphy |
|  | Title: Managing Director |
| TRUIST SECURITIES, INC. | TRUIST SECURITIES, INC. |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Geoffrey Fennel |
|  | Name: Geoffrey Fennel |
|  | Title: Director |
| WELLS FARGO SECURITIES, LLC | WELLS FARGO SECURITIES, LLC |
| &nbsp;&nbsp;&nbsp;As Manager and Forward Seller | &nbsp;&nbsp;&nbsp;As Manager and Forward Seller |
| By: | /s/ Michael Tiedemann |
|  | Name: Michael Tiedemann |
|  | Title: Managing Director |

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| | |
|:---|:---|
| THE TORONTO-DOMINION BANK | THE TORONTO-DOMINION BANK |
| As Forward Purchaser | As Forward Purchaser |
| By: | /s/ Igor Biselman |
|  | Name: Igor Biselman |
|  | Title: Managing Director |
| TRUIST BANK | TRUIST BANK |
| As Forward Purchaser | As Forward Purchaser |
| By: | /s/ Rakesh Mangat |
|  | Name: Rakesh Mangat |
|  | Title: Managing Director |
| WELLS FARGO BANK, NATIONAL ASSOCIATION | WELLS FARGO BANK, NATIONAL ASSOCIATION |
| As Forward Purchaser | As Forward Purchaser |
| By: | /s/ Christine Roemer |
|  | Name: Christine Roemer |
|  | Title: Managing Director |

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*{Signature Page to First Amendment to Equity Distribution Agreement}*