Pinnacle West Capital Corp. said it plans to release its second-quarter 2026 financial results before U.S. financial markets open on Tuesday, Aug. 4, 2026, and will host a live webcast and conference call at noon ET the same day. Investors can listen through a webcast at www.pinnaclewest.com/presentations or join by phone at (888) 506-0062 in the United States or (973) 528-0011 internationally using participant access code 293662. A webcast replay will remain available for 30 days, while a telephone replay will be accessible through 11:59 p.m. ET on Tuesday, Aug. 11, 2026, at (877) 481-4010 in the U.S. and Canada or (919) 882-2331 internationally with replay passcode 54218. Pinnacle West is an energy holding company based in Phoenix with consolidated assets of about $31 billion, around 6,200 megawatts of generating capacity and approximately 6,600 employees in Arizona and New Mexico. Through its principal subsidiary, Arizona Public Service, it provides retail electricity service to about 1.5 million Arizona homes and businesses.