AEP Texas Inc.

On October 23, 2026, American Electric Power Company, Inc. (“Company”) entered into a Settlement, Release of All Claims, and Noncompetition Agreement (“Agreement”) with Alicia Knapp, former President Nuclear Development of the Company, in connection with Ms. Knapp’s previously disclosed separation from the Company. The Agreement supersedes the severance arrangements described in the Company's Current Report on Form 8-K filed on September 30, 2026.

Pursuant to the Agreement, Ms. Knapp will receive $4,342,662.00, less applicable withholdings required by law, subject to Ms. Knapp’s execution and non-revocation of the Agreement, which includes a general release, and continued compliance with the restrictive covenants and other obligations set forth therein. The amount was agreed upon with Ms. Knapp after considering certain financial consequences associated with her transition to employment with the Company and the timing of her subsequent separation. The payments and benefits under the Agreement are in lieu of any payments or benefits that Ms. Knapp otherwise may have been entitled to receive under the Company's Executive Severance Plan or General Severance Plan, and Ms. Knapp has waived any rights to benefits under those plans.

The foregoing description of the Agreement is qualified in its entirety by reference to the Agreement, a copy of which will be filed with the Company’s Annual Report on Form 10-K for the fiscal year ending December 31, 2026.

During the three months ended September 30, 2026, none of the Company’s directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934)adopted, terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K of the Securities Act of 1933).