FE

SEC source: 0001127602-25-000838 · form4.xml · derivative · entry 2

ONEIL JAMES F · CIK 0001102786 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,792.5224

Underlying: Common Stock · 1,000 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-25-000836 · form4.xml · derivative · entry 2

KALETA PAUL J · CIK 0001349867 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,726.1288

Underlying: Common Stock · 1,000 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-25-000832 · form4.xml · derivative · entry 3

Hicks Lisa Winston · CIK 0001870881 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,726.1288

Underlying: Common Stock · 1,000 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-25-000827 · form4.xml · nonDerivative · entry 1

DEMETRIOU STEVEN J. · CIK 0001173003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,431

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-25-000819 · form4.xml · derivative · entry 2

Croom Jana T · CIK 0001840657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,615.7761

Underlying: Common Stock · 1,000 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-029883 · form4.xml · nonDerivative · entry 1

Smith Allan Wade · CIK 0002004630 · President, FE Utilities

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,554

F1 · shares: This Form 4 is being filed to report the number of shares withheld to satisfy the reporting person's tax withholding obligation upon the vesting of 32,498 shares of restricted common stock granted pursuant to the terms of the Restricted Stock Award Agreement, dated December 18, 2023, between FirstEnergy Corp. (the "Company") and the reporting person.

F2 · balance_after: Includes shares acquired through dividend reinvestment.

SEC source: 0001127602-24-028546 · form4.xml · nonDerivative · entry 1

Thomas Toby L. · CIK 0002002091 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,827

F1 · shares: This Form 4 is being filed to report the number of shares withheld to satisfy the reporting person's tax withholding obligation upon the vesting of 5,654 shares of restricted common stock granted pursuant to the terms of the Restricted Stock Award Agreement, dated November 30, 2023, between FirstEnergy Corp. (the "Company") and the reporting person.

F2 · balance_after: Includes shares acquired through dividend reinvestment

SEC source: 0001127602-24-025061 · form4.xml · derivative · entry 2

Williams Melvin D. · CIK 0001864882 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,610.1636

Underlying: Common Stock · 900 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-025059 · form4.xml · derivative · entry 2

Turner Leslie M · CIK 0001553405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,498.6231

Underlying: Common Stock · 900 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-025057 · form4.xml · nonDerivative · entry 1

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,704

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan

SEC source: 0001127602-24-025055 · form4.xml · derivative · entry 2

ONEIL JAMES F · CIK 0001102786 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,379.2165

Underlying: Common Stock · 900 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-025054 · form4.xml · derivative · entry 2

KALETA PAUL J · CIK 0001349867 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,610.1636

Underlying: Common Stock · 900 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-025053 · form4.xml · derivative · entry 3

Hicks Lisa Winston · CIK 0001870881 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,610.1636

Underlying: Common Stock · 900 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-025051 · form4.xml · nonDerivative · entry 1

DEMETRIOU STEVEN J. · CIK 0001173003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,431

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-24-025049 · form4.xml · derivative · entry 2

Croom Jana T · CIK 0001840657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,540.4561

Underlying: Common Stock · 900 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020109 · form4.xml · derivative · entry 2

Williams Melvin D. · CIK 0001864882 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,608.9022

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020103 · form4.xml · derivative · entry 2

Turner Leslie M · CIK 0001553405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,404.0081

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020099 · form4.xml · nonDerivative · entry 1

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,242

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-24-020092 · form4.xml · derivative · entry 2

ONEIL JAMES F · CIK 0001102786 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,096.9165

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020085 · form4.xml · derivative · entry 2

KALETA PAUL J · CIK 0001349867 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,608.9022

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020082 · form4.xml · derivative · entry 3

Hicks Lisa Winston · CIK 0001870881 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,608.9022

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-020078 · form4.xml · nonDerivative · entry 1

DEMETRIOU STEVEN J. · CIK 0001173003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,531

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-24-020072 · form4.xml · derivative · entry 2

Croom Jana T · CIK 0001840657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,577.6152

Underlying: Common Stock · 1,039 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-017934 · form4.xml · nonDerivative · entry 1

TIERNEY BRIAN X · CIK 0001423515 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 198,280

F1 · shares: This Form 4 is being filed to report the number of shares withheld to satisfy the reporting person's tax withholding obligation upon the vesting of 35,190 shares of restricted common stock granted pursuant to the terms of the Restricted Stock Award Agreement, dated June 1, 2023, between FirstEnergy Corp. (the "Company") and the reporting person.

F2 · balance_after: Includes 1,502 shares acquired through dividend reinvestment.

SEC source: 0001127602-24-012333 · form4.xml · derivative · entry 2

Williams Melvin D. · CIK 0001864882 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,469.062

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-012330 · form4.xml · derivative · entry 2

Turner Leslie M · CIK 0001553405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,161.028

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-012326 · form4.xml · nonDerivative · entry 1

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,554

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-24-012322 · form4.xml · derivative · entry 2

ONEIL JAMES F · CIK 0001102786 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,646.566

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-012315 · form4.xml · derivative · entry 2

KALETA PAUL J · CIK 0001349867 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,469.067

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F1 · security: Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F2 · derivative.exercise_price: 1 for 1

F3 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F3 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-012310 · form4.xml · derivative · entry 3

Hicks Lisa Winston · CIK 0001870881 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,469.07

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-012303 · form4.xml · nonDerivative · entry 1

DEMETRIOU STEVEN J. · CIK 0001173003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,492

F1 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

SEC source: 0001127602-24-012295 · form4.xml · derivative · entry 2

Croom Jana T · CIK 0001840657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,480.228

Underlying: Common Stock · 1,043 shares

Expires not disclosed

F2 · security: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan and deferred pursuant to the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors.

F3 · derivative.exercise_price: 1 for 1

F4 · derivative.exercise_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F4 · derivative.expiration_date: This holding reflects phantom stock payable in cash or shares of FirstEnergy Corp. common stock following conclusion of service as a director, in accordance with the terms and conditions of the FirstEnergy Corp. Deferred Compensation Plan for Outside Directors. Each share of phantom stock is the economic equivalent of one share of common stock.

F5 · balance_after: Includes phantom stock units acquired through dividend reinvestments.

SEC source: 0001127602-24-008733 · form4.xml · derivative · entry 6

Walker Christine · CIK 0001747189 · SVP, CHRO & Corporate Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 36,273.681 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.exercise_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.expiration_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

SEC source: 0001127602-24-008733 · form4.xml · nonDerivative · entry 3

Walker Christine · CIK 0001747189 · SVP, CHRO & Corporate Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,868.28

F4 · shares: Represents the deemed disposition to the Company of the common stock, net applicable withholding obligations, underlying the Cash-Based RSUs, described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008733 · form4.xml · nonDerivative · entry 2

Walker Christine · CIK 0001747189 · SVP, CHRO & Corporate Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,273.842

F3 · shares: Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting of the RSUs described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008733 · form4.xml · nonDerivative · entry 1

Walker Christine · CIK 0001747189 · SVP, CHRO & Corporate Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,232.961

F1 · shares: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F2 · price: The RSUs were granted under the FirstEnergy Corp. 2020 Incentive Compensation Plan and, therefore, the reporting person paid no price for the RSUs.

SEC source: 0001127602-24-008731 · form4.xml · derivative · entry 4

TIERNEY BRIAN X · CIK 0001423515 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 142,698 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.exercise_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.expiration_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

SEC source: 0001127602-24-008731 · form4.xml · nonDerivative · entry 2

TIERNEY BRIAN X · CIK 0001423515 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 212,737

F3 · shares: Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting of the RSUs described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008731 · form4.xml · nonDerivative · entry 1

TIERNEY BRIAN X · CIK 0001423515 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 277,451

F1 · shares: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F2 · price: The RSUs were granted under the FirstEnergy Corp. 2020 Incentive Compensation Plan and, therefore, the reporting person paid no price for the RSUs.

SEC source: 0001127602-24-008730 · form4.xml · derivative · entry 3

Thomas Toby L. · CIK 0002002091 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,866 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.exercise_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.expiration_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

SEC source: 0001127602-24-008730 · form4.xml · nonDerivative · entry 2

Thomas Toby L. · CIK 0002002091 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,543

F3 · shares: Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting of the RSUs described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008730 · form4.xml · nonDerivative · entry 1

Thomas Toby L. · CIK 0002002091 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,004

F1 · shares: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F2 · price: The RSUs were granted under the FirstEnergy Corp. 2020 Incentive Compensation Plan and, therefore, the reporting person paid no price for the RSUs.

SEC source: 0001127602-24-008729 · form4.xml · derivative · entry 6

K. Jon Taylor · CIK 0001575883 · SVP, CFO and Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,742

Underlying: Common Stock · 35,742 shares

Expires not disclosed

F6 · derivative.exercise_price: Each share of phantom stock is the economic equivalent of one share of common stock and is settled in cash. The shares of phantom stock are payable upon the reporting person's retirement or termination of employment under the FirstEnergy Corp. Amended and Restated Executive Deferred Compensation Plan, as amended.

F6 · derivative.exercise_date: Each share of phantom stock is the economic equivalent of one share of common stock and is settled in cash. The shares of phantom stock are payable upon the reporting person's retirement or termination of employment under the FirstEnergy Corp. Amended and Restated Executive Deferred Compensation Plan, as amended.

F6 · derivative.expiration_date: Each share of phantom stock is the economic equivalent of one share of common stock and is settled in cash. The shares of phantom stock are payable upon the reporting person's retirement or termination of employment under the FirstEnergy Corp. Amended and Restated Executive Deferred Compensation Plan, as amended.

SEC source: 0001127602-24-008729 · form4.xml · derivative · entry 5

K. Jon Taylor · CIK 0001575883 · SVP, CFO and Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 107,009.961 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.exercise_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F1 · derivative.expiration_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

SEC source: 0001127602-24-008729 · form4.xml · nonDerivative · entry 3

K. Jon Taylor · CIK 0001575883 · SVP, CFO and Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,453.775

F4 · shares: Represents the deemed disposition to the Company of the common stock underlying the Cash-Based RSUs, net of applicable withholding obligations described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008729 · form4.xml · nonDerivative · entry 2

K. Jon Taylor · CIK 0001575883 · SVP, CFO and Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,343.075

F3 · shares: Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting of the RSUs described in footnote 1, which transaction is exempt under Rule 16b-3.

SEC source: 0001127602-24-008729 · form4.xml · nonDerivative · entry 1

K. Jon Taylor · CIK 0001575883 · SVP, CFO and Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,187.736

F1 · shares: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable 2/3 in shares of common stock of FirstEnergy Corp. (the "Company") ("Share-Based RSUs") and 1/3 in cash ("Cash-Based RSUs") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs vested on March 1, 2024.

F2 · price: The RSUs were granted under the FirstEnergy Corp. 2020 Incentive Compensation Plan and, therefore, the reporting person paid no price for the RSUs.

SEC source: 0001127602-24-008728 · form4.xml · derivative · entry 4

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 74,220 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs settled on March 1, 2024.

F3 · derivative.exercise_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs settled on March 1, 2024.

F3 · derivative.expiration_date: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs settled on March 1, 2024.

SEC source: 0001127602-24-008728 · form4.xml · nonDerivative · entry 3

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,573

F3 · shares: This Form 4 is being filed to report the vesting, and automatic withholding for tax purposes, of performance-adjusted restricted stock units ("RSUs"), each of which represents a contingent right to receive an award payable in shares of common stock of FirstEnergy Corp. (the "Company") following the vesting date. The satisfaction of the performance goals for the RSUs were certified by the Company's Board of Directors on February 7, 2024, as previously reported on a Form 4 filed on February 9, 2024, and the RSUs settled on March 1, 2024.

F4 · price: The RSUs were granted under the FirstEnergy Corp. 2020 Incentive Compensation Plan and, therefore, the reporting person paid no price for the RSUs.

SEC source: 0001127602-24-008728 · form4.xml · nonDerivative · entry 2

SOMERHALDER JOHN W II · CIK 0001145921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,859

F2 · shares: Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting of the RSUs described in footnote 1, which transaction is exempt under Rule 16b-3.