FE

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

Balance includes shares acquired through dividend reinvestments.

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.

1 for 1

This holding reflects phantom stock units payable in cash or shares of Company common stock following conclusion of service as a director, in accordance with the terms and conditions of the Company Deferred Compensation Plan for Outside Directors. Each phantom stock unit is the economic equivalent of one share of common stock.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes phantom stock units acquired through dividend reinvestments.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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 38,095 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.

Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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

1 for 1

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.

Includes phantom stock units acquired through dividend reinvestments.

Represents shares paid quarterly under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

Balance includes shares acquired through dividend reinvestments.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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

1 for 1

This holding reflects phantom stock units payable in cash or shares of Company common stock following conclusion of service as a director, in accordance with the terms and conditions of the Company Deferred Compensation Plan for Outside Directors. Each phantom stock unit is the economic equivalent of one share of common stock.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

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.

1 for 1

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.

Includes dividends accrued on phantom stock units.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.60 to $50.621, inclusive. The reporting person undertakes to provide to FirstEnergy Corp. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.925 to $50.955, inclusive. The reporting person undertakes to provide to FirstEnergy Corp. (the "Company"), any security holder of the Company., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

FirstEnergy Corp.'s (the "Company") 401(k) Savings Plan ("401(k) Plan") includes a unitized fund invested in shares of common stock of the Company, in which the reporting person may invest, and includes dividend reinvestment and company match features. The number of shares reported as sold includes those shares held in the unitized stock fund and acquired under the 401(k) Plan since the reporting person's last filed Form 4.

Represents the vesting of performance-adjusted RSUs, each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the Company 2020 Incentive Compensation Plan.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the Company 2020 Incentive Compensation Plan.

Represents shares of common stock of the Company withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the Company 2020 Incentive Compensation Plan.

Represents the number of shares withheld to satisfy the reporting person's tax withholding obligation upon the vesting of 14,522 shares of restricted common stock granted pursuant to the terms of the Restricted Stock Award Agreement, dated March 1, 2023, between the Company and the reporting person.

On March 1, 2026, the Cash-Based RSUs were settled based on an average of the Company's high and low stock price on February 27, 2026, net of applicable tax withholding obligations.

Represents shares of common stock of the Company withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.

Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.

These securities are time-based restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.10 per share, of FirstEnergy Corp. (the "Company"). The time-based restricted stock units were granted under the Company's 2020 Incentive Compensation Plan and will vest in full on March 1, 2029.

Represents the vesting of performance-adjusted RSUs, each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the Company 2020 Incentive Compensation Plan.

RSUs convert into the Company's common stock on a one-for-one basis.

Represents the vesting of performance-adjusted RSUs, each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the FirstEnergy Corp. 2020 Incentive Compensation Plan.

On March 1, 2026, the Cash-Based RSUs were settled based on an average of the Company's high and low stock price on February 27, 2026, net of applicable tax withholding obligations.

Represents shares of common stock of the Company withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.

On March 1, 2026, the Cash-Based RSUs were settled based on an average of the Company's high and low stock price on February 27, 2026, net of applicable tax withholding obligations.

These securities are time-based restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.10 per share, of FirstEnergy Corp. (the "Company"). The time-based restricted stock units were granted under the Company's 2020 Incentive Compensation Plan and will vest in full on March 1, 2029.

Each share of phantom stock represents a right to receive one share of the Company's common stock.

The phantom stock becomes payable upon the reporting person's death, disability or termination of employment with the Company.

On March 1, 2026, the Cash-Based RSUs were settled based on an average of the Company's high and low stock price on February 27, 2026, net of applicable tax withholding obligations.

RSUs convert into the Company's common stock on a one-for-one basis.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

These securities are time-based restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.10 per share, of FirstEnergy Corp. (the "Company"). The time-based restricted stock units were granted under the Company's 2020 Incentive Compensation Plan and will vest in full on March 1, 2029.

On March 1, 2026, the Cash-Based RSUs were settled based on an average of the Company's high and low stock price on February 27, 2026, net of applicable tax withholding obligations.

In connection with the vesting of the Share-Based RSUs on March 1, 2026, the reporting person's receipt of 13,657 shares of the Company's common stock was deferred, resulting in the reporting person receiving instead 13,657 shares of phantom stock pursuant to the Company's deferred compensation plan. The reporting person is therefore reporting the disposition of 13,657 shares of common stock in exchange for an equal number of shares of phantom stock.

These securities are time-based restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.10 per share, of FirstEnergy Corp. (the "Company"). The time-based restricted stock units were granted under the Company's 2020 Incentive Compensation Plan and will vest in full on March 1, 2029.

Each share of phantom stock represents a right to receive one share of the Company's common stock.

The phantom stock becomes payable upon the reporting person's death, disability or termination of employment with the Company.

Represents shares of common stock of the Company automatically withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.

RSUs convert into the Company's common stock on a one-for-one basis.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

RSUs convert into the Company's common stock on a one-for-one basis.

Represents the vesting of performance-adjusted RSUs, each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

RSUs convert into the Company's common stock on a one-for-one basis.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

Represents the vesting of performance-adjusted restricted stock units ("RSUs"), each of which previously represented a contingent right to receive an RSU award payable 2/3 in shares of common stock of 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 11, 2026, as previously reported on a Form 4 filed on February 13, 2026, and the RSUs, which had remained subject to a continued service requirement, vested on March 1, 2026.

The RSUs converted into shares of the Company's common stock on a one-for-one basis under the Company 2020 Incentive Compensation Plan.

Represents shares of common stock of the Company withheld to cover tax obligations associated with the vesting on March 1, 2026, of the Share-Based RSUs described in footnote 2, which transaction is exempt under Rule 16b-3.