AEP · American Electric Power Co Inc

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

The reporting director deferred the receipt of his $37,500 quarterly cash retainer into the AEP Stock Fund under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. The reporting director may transfer amounts in the AEP Stock Fund into an alternative investment at any time.

Was AEP Stock Price at the time of the transaction.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

A portion of the Reporting Person's restricted stock units (6,081) granted on June 11, 2025, vested on May 1, 2026. Upon vesting, 1,770 restricted stock units were withheld to satisfy the Reporting Person's tax liability.

A portion of the Reporting Person's restricted stock units (2,147) granted on May 9, 2023, vested on May 1, 2026. Upon vesting, 636 restricted stock units were withheld to satisfy the Reporting Person's tax liability.

A portion of the Reporting Person's restricted stock units (9,654) granted on April 28, 2025, vested on May 1, 2026. Upon vesting, 4,306 restricted stock units were withheld to satisfy the Reporting Person's tax liability.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

The reporting director deferred the receipt of his $37,500 quarterly cash retainer into the AEP Stock Fund under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. The reporting director may transfer amounts in the AEP Stock Fund into an alternative investment at any time.

Was AEP Stock Price at the time of the transaction.

Was AEP Stock Price at the time of the transaction.

Stock Units are paid to the director in cash or shares upon termination of service unless the director has elected to defer payment for a period that results in payment commencing not later than five years thereafter.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Amounts shown represent value in AEP Stock Plan under the AEP Stock Unit Accumulation Plan for Non-Employee Directors. Each share of phantom stock represents the right to receive the cash value of one share of AEP common stock.

Was AEP Stock Price at the time of the transaction.

Shares of phantom stock are payable in cash or shares following termination of the reporting person's service on the Board. The reporting person may transfer the phantom stock in the AEP Stock Plan account into an alternative investment account at any time.

Performance Share units awarded pursuant to the AEP Long-Term Incentive Plan. The reporting person deferred the receipt of 6 vested performance units (net of taxes) into Career Shares (phantom stock) in AEP's Stock Ownership Requirement Plan. The Career Shares become payable upon the reporting person's termination of employment with AEP.

The sale reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 7, 2025.

Performance Share units awarded pursuant to the AEP Long-Term Incentive Plan. The reporting person deferred the receipt of 4783 vested performance units (net of taxes) into Career Shares (phantom stock) in AEP's Stock Ownership Requirement Plan. The Career Shares become payable upon the reporting person's termination of employment with AEP.