AMERICAN ELECTRIC POWER CO INC (AEP) · Initial Holdings (Form 3) SEC Filing

=== SEC Form 3 — Statement of Changes in Beneficial Ownership === Document Type: 3 Period of Report: 2026-04-28 --- Issuer --- Name: AMERICAN ELECTRIC POWER CO INC (AEP) CIK: 0000004904 --- Reporting Owner --- Name: Hall Greg B CIK: 0001869009 Role: Officer (Executive Vice President) --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) [Holding #2] Security: Career Shares (Phantom Stock) Ownership: D (Direct) Footnotes: [F1] Career shares become payable upon the reporting person's termination of employment with AEP. [F1] Career shares become payable upon the reporting person's termination of employment with AEP. [F1] Career shares become payable upon the reporting person's termination of employment with AEP. [Holding #3] Security: Resticted Stock Units Ownership: D (Direct) Footnotes: [F3] The restricted stock unit represents a contingent right to receive one share of AEP common stock [F2] The restricted stock units vest in three equal installments, February 21, 2027, February 21, 2028, and February 21, 2029 [F2] The restricted stock units vest in three equal installments, February 21, 2027, February 21, 2028, and February 21, 2029 [F2] The restricted stock units vest in three equal installments, February 21, 2027, February 21, 2028, and February 21, 2029 [Holding #4] Security: Resticted Stock Units Ownership: D (Direct) Footnotes: [F3] The restricted stock unit represents a contingent right to receive one share of AEP common stock [F4] The restricted stock unit vest on May 1, 2026 [F4] The restricted stock unit vest on May 1, 2026 [F4] The restricted stock unit vest on May 1, 2026 [Holding #5] Security: Resticted Stock Units Ownership: D (Direct) Footnotes: [F3] The restricted stock unit represents a contingent right to receive one share of AEP common stock [F5] The restricted stock unit vest in two equal installments, February 21, 2027, and February 21, 2028 [F5] The restricted stock unit vest in two equal installments, February 21, 2027, and February 21, 2028 [F5] The restricted stock unit vest in two equal installments, February 21, 2027, and February 21, 2028 [Holding #6] Security: Resticted Stock Units Ownership: D (Direct) Footnotes: [F3] The restricted stock unit represents a contingent right to receive one share of AEP common stock [F6] The restricted stock unit vest in two equal installments, August 1, 2026, and August 1, 2027 [F6] The restricted stock unit vest in two equal installments, August 1, 2026, and August 1, 2027 [F6] The restricted stock unit vest in two equal installments, August 1, 2026, and August 1, 2027 [Holding #7] Security: Resticted Stock Units Ownership: D (Direct) Footnotes: [F3] The restricted stock unit represents a contingent right to receive one share of AEP common stock [F7] The restricted stock unit vest on February 21, 2027 [F7] The restricted stock unit vest on February 21, 2027 [F7] The restricted stock unit vest on February 21, 2027 --- Footnotes (Complete Index) --- F1: Career shares become payable upon the reporting person's termination of employment with AEP. F2: The restricted stock units vest in three equal installments, February 21, 2027, February 21, 2028, and February 21, 2029 F3: The restricted stock unit represents a contingent right to receive one share of AEP common stock F4: The restricted stock unit vest on May 1, 2026 F5: The restricted stock unit vest in two equal installments, February 21, 2027, and February 21, 2028 F6: The restricted stock unit vest in two equal installments, August 1, 2026, and August 1, 2027 F7: The restricted stock unit vest on February 21, 2027 --- Signature --- /s/ /s/ David C House, Attorney-in-Fact for Greg B. Hall (2026-04-30)