American Electric Power Company, Inc. (AEP) — Form SCHEDULE 13G: Ownership over 5% (passive)

Vanguard Portfolio Management filed a Schedule 13G reporting a passive stake in American Electric Power Company, Inc. As of 09/30/2026, the reporting entities beneficially own 30,941,474 shares of Common Stock, representing 5.68 of the class. The filing was signed by My Trieu-Gatt on 10/30/2026.