Firstenergy (FE)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-04-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: FIRSTENERGY CORP (FE) CIK: 0001031296 --- Reporting Owner --- Name: ONEIL JAMES F CIK: 0001102786 Role: Director --- Derivative Transactions --- [Transaction #1] Security: Phantom Stock Units Date: 2026-04-01 | Code: A (Grant or award) Shares: +837 | Price: $0.00 Shares Owned After: 45,814.8266 | Ownership: D (Direct) Footnotes: [F1] Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan. [F2] 1 for 1 [F3] 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. [F3] 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. [F4] Includes dividends accrued on phantom stock units. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) --- Footnotes (Complete Index) --- F1: Represents shares paid quarterly for director compensation under the FirstEnergy Corp. 2020 Incentive Compensation Plan. F2: 1 for 1 F3: 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. F4: Includes dividends accrued on phantom stock units. --- Signature --- /s/ /s/ Mary M. Swann, attorney-in-fact (2026-04-03)