Pinnacle West Capital Corp. announced that Pinnacle West and Arizona Public Service (APS) Chairman and CEO Jeff Guldner will retire as CEO on March 31, 2025, after 5 years of leading the company. APS President Ted Geisler will assume the roles of Chairman of the Board, President and CEO of Pinnacle West and APS effective April 1, 2025.
Guldner will remain employed by Pinnacle West in a non-executive advisory capacity to support a smooth transition through the end of March 2026. Geisler has been President of APS since 2022 and has held a series of leadership positions at the company during his 23-year career at APS. Geisler began his career at APS in 2001 and has held positions on the executive team since 2018, including the past two years as President.
His leadership journey includes critical roles such as Chief Financial Officer, Chief Information Officer, General Manager of Transmission and Distribution Operations and Director of Corporate Strategy, as well as other key positions across operations and corporate resources. A third-generation Arizonan, Geisler is deeply committed to the community and is currently Chairman of the Board of the Arizona Chamber of Commerce and on the board of the Greater Phoenix Economic Council (GPEC). He sits on the W.P. Carey Dean?s Council at Arizona State University and recently was chosen as the 56th Fighter Wing Command Honorary Commander at Luke Air Force Base.
He has previously served on the boards of Chicanos por la Causa and Boys and Girls Club of the Valley. Geisler earned a Bachelor of Science degree from Colorado State University and an MBA from Arizona State University. He is a graduate of the Nuclear Reactor Technology Course at the Massachusetts Institute of Technology and the Strategic Financial Leadership Program at Stanford University?s Graduate School of Business.
