Item 6. EXHIBITS Copy as markdown (a) Exhibits
Exhibit No. Registrant(s) Description Previously Filed as Exhibit Date Filed 3.1 Pinnacle West Pinnacle West Articles of Incorporation, restated as of May 2 2 , 2025 3.2 Pinnacle West Pinnacle West Capital Corporation Bylaws, amended as of February 19, 2020 3.1 to Pinnacle West/APS February 25, 2020 Form 8-K Report 2/25/2020 3.3 APS APS Articles of Incorporation, restated as of May 16, 2012 3.4 APS Arizona Public Service Company Bylaws, amended as of December 16, 2008 3.4 to Pinnacle West/APS December 31, 2008 Form 10-K Report 2/20/2009
31.1 Pinnacle West Certificate of Theodore N. Geisler, Chief Executive Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended 31.2 Pinnacle West Certificate of Andrew Cooper, Chief Financial Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended 31.3 APS Certificate of Theodore N. Geisler , Chief Executive Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended 31.4 APS Certificate of Andrew Cooper, Chief Financial Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended 32.1(a) Pinnacle West Certification of Chief Executive Officer and Chief Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 32.2(a) APS Certification of Chief Executive Officer and Chief Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 101.INS Pinnacle West APS Inline XBRL Instance Document - the instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document. 101.SCH Pinnacle West APS Inline XBRL Taxonomy Extension Schema Document 101.CAL Pinnacle West APS Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.LAB Pinnacle West APS Inline XBRL Taxonomy Extension Label Linkbase Document 101.PRE Pinnacle West APS Inline XBRL Taxonomy Extension Presentation Linkbase Document 101.DEF Pinnacle West APS Inline XBRL Taxonomy Definition Linkbase Document 104 Pinnacle West APS Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
(a) Furnished herewith as an exhibit.
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 thereunto duly authorized.
PINNACLE WEST CAPITAL CORPORATION (Registrant) Dated: August 6, 2025 By: /s/ Andrew Cooper Andrew Cooper Senior Vice President and Chief Financial Officer (Principal Financial Officer and Officer Duly Authorized to sign this Report) ARIZONA PUBLIC SERVICE COMPANY (Registrant) Dated: August 6, 2025 By: /s/ Andrew Cooper Andrew Cooper Senior Vice President and Chief Financial Officer (Principal Financial Officer and Officer Duly Authorized to sign this Report)
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