PINNACLE WEST CAPITAL CORP 10-K

ITEM 3. LEGAL PROCEEDINGS See “Business of Arizona Public Service Company — Environmental Matters” in Part I, Item 1 with regard to pending or threatened litigation and other disputes. See Note 8 for ACC and FERC-related matters. See Note 14 for information regarding environmental matters, Superfund–related matters and other disputes. ITEM 4. MINE SAFETY DISCLOSURES Not applicable. 52 Table of Contents INFORMATION ABOUT OUR EXECUTIVE OFFICERS Pinnacle West’s executive officers are elected no less often than annually and may be removed by the Board of Directors, or in certain cases also by the Human Resources Committee, at any time. The executive officers, their ages at February 25, 2026, current positions and principal occupations for the past five years are as follows: Name Age Position Period Theodore N. Geisler 47 Chairman of the Board, Chief Executive Officer and President of Pinnacle West and APS 2025-Present President of APS; Director, Pinnacle West and APS Boards of Directors 2024-2025 President of APS 2022-2024 Senior Vice President and Chief Financial Officer of Pinnacle West and APS 2020-2022 Shirley A. Baum 52 Senior Vice President, Corporate Secretary and General Counsel of Pinnacle West and APS 2026-Present Senior Vice President and General Counsel of Pinnacle West and APS 2025-2026 Vice President of Law of Pinnacle West and APS 2022-2025 Deputy General Counsel of Pinnacle West 2019-2022 Christopher R. Bauer 50 Vice President and Treasurer of Pinnacle West and APS 2024-Present Director, Corporate Finance and Assistant Treasurer of Duke Energy Corporation 2021-2024 Director, Credit and Capital Markets of Duke Energy Corporation 2017-2021 Elizabeth A. Blankenship 54 Vice President, Controller and Chief Accounting Officer of Pinnacle West and APS 2019-Present Andrew D. Cooper 47 Senior Vice President and Chief Financial Officer of Pinnacle West and APS 2022-Present Vice President and Treasurer of Pinnacle West and APS 2020-2022 Jose L. Esparza 51 Senior Vice President, Public Policy of APS 2022-Present Vice President, Regulatory of APS 2022 Officer and Senior Vice President, Customer Engagement and Information Technology of Southwest Gas 2019-2021 Adam C. Heflin 62 Executive Vice President and Chief Nuclear Officer, Palo Verde, of APS 2022-Present Chief Executive Officer of Wolf Creek Nuclear Operating Corporation 2014-2019 Jacob Tetlow 53 Executive Vice President and Chief Operating Officer of APS 2024-Present Executive Vice President, Operations of APS 2021-2024 Senior Vice President, Non-Nuclear Operations of APS 2020-2021 53 Table of Contents PART II