ARIZONA PUBLIC SERVICE CO

For the period ended Sep 30, 2026. Filed Nov 3, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 3, 2026

PNW$105.26+1.0%Stored close · as of Nov 9, 2026

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Contents

Item 6. Exhibits

(a) Exhibits

Exhibit No.	Registrant(s)	Description	Previously Filed as Exhibit	Date Filed
3.1	Pinnacle West	Articles of Incorporation, restated as of May 22, 2025	3.1 to Pinnacle West/APS June 30, 2025 Form 10-Q Report	8/6/2025
3.2	Pinnacle West	Bylaws, amended as of February 19, 2020	3.1 to Pinnacle West/APS Form 8-K Report filed February 25, 2020	2/25/2020
3.3	APS	Articles of Incorporation, restated as of May 16, 2012	3.3 to Pinnacle West/APS June 30, 2025 Form 10-Q Report	8/6/2025
3.4	APS	Bylaws, amended as of December 16, 2008	3.4 to Pinnacle West/APS December 31, 2008 Form 10-K Report	2/20/2009
4.1	Pinnacle WestAPS	Thirty-Fourth Supplemental Indenture dated as of August 13, 2026	4.1 to Pinnacle West August 10, 2026 Form 8-K Report	8/13/2026
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 of 1934, 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 of 1934, 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 of 1934, 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 of 1934, 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 WestAPS	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 WestAPS	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Pinnacle WestAPS	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	Pinnacle WestAPS	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Pinnacle WestAPS	Inline XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	Pinnacle WestAPS	Inline XBRL Taxonomy Definition Linkbase Document
104	Pinnacle WestAPS	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

(a)Furnished herewith as an exhibit.

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.