FirstEnergy CEO shares withheld for tax vesting

FirstEnergy Corp Chairman, President and CEO Brian Tierney reported a routine tax-withholding share disposition tied to restricted stock vesting.

Rhea-AI Filing Summary

FirstEnergy Corp Chairman, President and CEO Brian Tierney reported a routine tax-withholding share disposition tied to restricted stock vesting. On June 1, 2026, 16,991 shares of common stock were withheld at $45.898 per share to satisfy his tax obligation on the vesting of 38,095 shares of restricted common stock granted under a June 1, 2023 award agreement.

After this withholding, Tierney directly holds 523,810.372 shares of FirstEnergy common stock. He also has an estimated 938.399 shares held indirectly through the Company’s 401(k) Savings Plan unitized stock fund, which includes dividend reinvestment and company match features.

Insider Trade Summary

Exercise Price or Tax Liability: 16,991 shares

Exercise Price or Tax Liability 2 txns

Insider TIERNEY BRIAN X

Role Chairman, President and CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	16,991	$45.898	$780K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 523,810.372 shares (Direct); Common Stock — 938.399 shares (Indirect, By Savings Plan)

Footnotes (3)

1. 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.
2. F2. Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments.
3. 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.

Key Figures

Shares withheld for taxes: 16,991 shares Withholding price: $45.898 per share Restricted shares vested: 38,095 shares +2 more

5 metrics

Shares withheld for taxes 16,991 shares Tax-withholding disposition at $45.898 per share on June 1, 2026

Withholding price $45.898 per share Price used for 16,991 withheld shares

Restricted shares vested 38,095 shares Restricted common stock vesting from June 1, 2023 award

Direct holdings after transaction 523,810.372 shares Common stock directly held by CEO after tax withholding

Indirect 401(k) holdings 938.399 shares Estimated shares via 401(k) Savings Plan unitized fund as of May 31, 2026

Key Terms

tax withholding obligation, restricted common stock, Restricted Stock Award Agreement, dividend reinvestments, +2 more

6 terms

tax withholding obligation financial

"shares withheld to satisfy the reporting person's tax withholding obligation upon the vesting"

restricted common stock financial

"upon the vesting of 38,095 shares of restricted common stock granted pursuant"

Restricted common stock is company shares that carry limits on selling or transferring for a set period or until certain conditions are met, like time-based vesting or regulatory clearance. Think of them as shares in a locked box that gradually open; they can become freely tradable later but initially reduce the number of shares available on the market. Investors watch restricted stock because its eventual release can change a company’s share supply, affect stock price, and influence control and dilution.

Restricted Stock Award Agreement financial

"granted pursuant to the terms of the Restricted Stock Award Agreement, dated June 1, 2023"

A restricted stock award agreement is a legal contract that grants someone company shares that are subject to limits — for example, they may only become fully owned after working at the company for a set time, meeting performance goals, or otherwise satisfying conditions. For investors, these agreements matter because they shape insider incentives, future share dilution when restrictions lift, and company compensation costs; think of it like a gift locked in a box that opens only after certain conditions are met.

dividend reinvestments financial

"Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments"

unitized fund financial

"includes a unitized fund invested in shares of common stock of the Company"

401(k) Savings Plan financial

"The Company's 401(k) Savings Plan includes a unitized fund invested in shares"

A 401(k) savings plan is an employer-sponsored retirement account that lets employees set aside a portion of their paycheck on a tax-advantaged basis, often with employer matching contributions that act like free additional savings. It matters to investors because matching, tax-deferred growth and investment choices can significantly boost long-term wealth—while plan rules or heavy concentration in a single company’s stock can increase an employee’s financial exposure to that company.

FAQ

What insider transaction did FirstEnergy (FE) report for CEO Brian Tierney?

FirstEnergy reported that CEO Brian Tierney had 16,991 shares of common stock withheld at $45.898 per share. This was to cover tax obligations from the vesting of 38,095 restricted shares, a routine compensation-related event rather than an open-market sale.

Was the FirstEnergy (FE) CEO’s Form 4 transaction an open-market stock sale?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. 16,991 shares were withheld by the company to satisfy tax obligations when 38,095 restricted shares vested, which is a standard mechanism in equity compensation plans.

How many FirstEnergy (FE) shares does CEO Brian Tierney hold after this filing?

After the tax withholding, Brian Tierney directly holds 523,810.372 shares of FirstEnergy common stock. He also indirectly holds an estimated 938.399 shares through the company’s 401(k) Savings Plan, reflecting allocations in a unitized stock fund.

What triggered the tax withholding share disposition for FirstEnergy (FE) CEO Tierney?

The disposition was triggered by the vesting of 38,095 shares of restricted common stock granted on June 1, 2023. To meet his tax withholding obligation at vesting, 16,991 shares were withheld rather than sold on the open market.

How are FirstEnergy (FE) shares held through the 401(k) Savings Plan reported for the CEO?

Shares in the 401(k) Savings Plan are held via a unitized fund invested in FirstEnergy common stock. The filing estimates 938.399 shares indirectly held for Brian Tierney, including dividend reinvestments and company match allocations as of May 31, 2026.

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Accepted by SEC EDGAR 06/03/2026 - 04:23 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

TIERNEY BRIAN X

(Last) (First) (Middle)

341 WHITE POND DRIVE

(Street)

AKRON OHIO 44320

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
FIRSTENERGY CORP [ FE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman, President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/01/2026		F		16,991(1)	D	$45.898	523,810.372(2)	D
Common Stock								938.399(3)	I	By Savings Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. Balance has been updated since the reporting person's last filed Form 4 to include shares acquired through dividend reinvestments.

3. 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.

	/s/ Mary M. Swann, attorney-in-fact	06/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)