TO THE INVESTMENT COMMUNITY:1 (Form 8-K)

TO THE INVESTMENT COMMUNITY:1

On December 9, 2025, FirstEnergy Corp. ("FirstEnergy" or the "Company") issued a presentation

providing its 2026 financial outlook which is focused on delivering value to our customers, the communities we serve and our investors. The presentation is posted to the Company's Investor Relations website at investors.firstenergycorp.com.

FirstEnergy initiated 2026 Core (non-GAAP) Earnings guidance of $2.62 to $2.82 per share. With a midpoint of $2.72 per share, this represents 7.5% growth over the increased 2025 Core Earnings guidance midpoint of $2.53 per share and ~9% growth over the original 2025 guidance midpoint of $2.50 per share.

FirstEnergy's 2026 Core Earnings guidance is supported by planned capital investments of $6 billion, a 9% increase from the 2025 capital investment plan of $5.5 billion. 2026 investments are focused on distribution infrastructure renewal and grid modernization, as well as significant reliability and resiliency enhancements to the high-voltage transmission system.

Subject to Board approval, the Company plans to declare 2026 quarterly dividends totaling $1.86 per share, which is aligned with the 60%-70% targeted payout ratio.

FirstEnergy also affirmed its 6-8% compound annual growth rate through 2029 and is guiding to the upper half of the range. FirstEnergy expects to update its five-year financial plan in connection with the fourth quarter 2025 earnings call in early 2026.

If you have any questions, please contact me at [email protected], Gina Caskey at [email protected], or Jake Mackin at [email protected].

Sincerely,

Karen Sagot

Vice President, Investor Relations

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1 Please see the Forward-looking Statements at the end of this Letter.