X0306 4 2021-03-01 0001031296 FIRSTENERGY CORP FE 0001348488 Strah Steven E 76 S. MAIN ST. AKRON OH 44308 1 President and Acting CEO Common Stock 2021-03-01 4 M 0 23804.449 A 91050.779 D Common Stock 2021-03-01 4 D 0 23804.449 33.725 D 67246.33 D Common Stock 2021-03-01 4 M 0 47916 A 115162.33 D Common Stock 2021-03-01 4 D 0 44650 D 70512.33 D Common Stock 2021-03-01 4 F 0 3266 33.725 D 67246.33 D Common Stock 5817.943 I By Savings Plan RSUC18 2021-03-01 4 M 0 23804.449 D Common Stock 23804.449 0 D RSUS18 2021-03-01 4 M 0 47916 D Common Stock 47916 0 D Phantom 3/21D 2021-03-01 4 A 0 44650 A Common Stock 44650 44650 D Represents the vesting of the RSUC18 award. The award vested on March 1, 2021. Amounts also include dividend reinvestment. 1 for 1. The RSUS18 and RSUC18 awards were previously granted for $0.00 under the FirstEnergy Corp. 2015 Incentive Compensation Plan. Balance includes shares acquired through dividend reinvestment. Represents the vesting of the RSUS18 award. The award vested on March 1, 2021. The shares coded "F" were automatically withheld to cover tax obligations associated with the payout. Amounts also include dividend reinvestment. This transaction represents the deferral of the RSUS18 award. As a result, the reporting person is reporting the disposition of common stock in exchange for an equal number of shares of phantom stock described below. FE's 401(k) Savings Plan includes a unitized fund invested in FE stock, 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 FE's common stock held in the unitized stock fund and allocated to the reporting person's account as of December 31, 2020. 1 for 1 This holding reflects phantom stock payable in cash upon retirement or other termination of employment under the FirstEnergy Corp. Amended and Restated Executive Deferred Compensation Plan. Each share of phantom stock is the economic equivalent of one share of common stock. Daniel M. Dunlap, attorney-in-fact 2021-03-03