X0508 4 2026-02-11 0001031296 FIRSTENERGY CORP FE 0002002091 Thomas Toby L. 341 WHITE POND DRIVE AKRON OH 44320 1 Chief Operating Officer 0 Common Stock 25780.103 D Common Stock 525.908 I By Savings Plan RSU 2026-02-11 4 A 0 23945.741 0 A Common Stock 23945.741 23945.741 D Phantom 3/25D Common Stock 11057.406 11057.406 D Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments. 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 indirectly held in the 401(k) Plan in this row is an estimate of the number of shares of the Company's common stock held in the unitized stock fund since the reporting person's last filed Form 4 and as allocated to the reporting person's account as of January 31, 2026. Represents performance-adjusted restricted stock units ("RSUs") granted on November 30, 2023, each of which represents a contingent right to receive an award payable 2/3 in Company common stock and 1/3 in cash following the vesting date. This Form 4 is being filed to report the satisfaction of the performance goals for the RSUs, as certified by the Company's Board of Directors on February 11, 2026. As a result, these RSUs will vest on March 1, 2026, generally subject to the reporting person's continued service. 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. /s/ Mary M. Swann, attorney-in-fact 2026-02-13