Firstenergy (FE)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: FIRSTENERGY CORP (FE) CIK: 0001031296 --- Reporting Owner --- Name: TIERNEY BRIAN X CIK: 0001423515 Role: Director, Officer (Chairman, President and CEO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-01 | Code: F (Payment of exercise/tax) Shares: -16,991 | Price: $45.90 Total Value: $779,852.92 Shares Owned After: 523,810.372 | Ownership: D (Direct) Footnotes: [F1] 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. [F2] Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F3] The Company's 401(k) Savings 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) Savings 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 May 31, 2026. --- Footnotes (Complete Index) --- F1: 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. F2: Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments. F3: The Company's 401(k) Savings 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) Savings 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 May 31, 2026. --- Signature --- /s/ /s/ Mary M. Swann, attorney-in-fact (2026-06-03)