Item 5.03 — Amendments to Articles of Incorporation or Bylaws

Bylaws or charter amended.

; Change in Fiscal Year American Electric Power Company, Inc. (the “Company”) held its annual meeting of shareholders (the “Annual Meeting”) on April 28, 2026, at which the shareholders of the Company approved an amendment of the Company’s Restated Certificate of Incorporation (the “Certificate of Incorporation”) to increase the authorized number of shares of common stock, par value of $6.50 per share, from 600,000,000 shares to 900,000,000 shares.

Item 5.07 — Submission of Matters to a Vote of Security Holders

Annual meeting / shareholder vote results.

At the Annual Meeting, the Company’s shareholders voted on the proposals as set forth below. The proposals are described in detail in the Company’s definitive proxy statement on Schedule 14A filed on March 18, 2026. Proposal 1 The Company’s shareholders elected ten individuals to serve as directors of the Company as set forth below:NameVotes ForVotes AgainstAbstentionsBroker Non-VotesBill Fehrman386,204,57218,354,978762,67362,458,845Ben Fowke394,364,18410,196,571762,00862,458,845Art A. Garcia393,093,12211,457,834771,80762,458,845Sandra Beach Lin368,368,34436,245,355708,52462,458,845Margaret M.