Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Chung Bruce 2. Issuer Name and Ticker or Trading Symbol NRG ENERGY, INC. [NRG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & CFO (Last) (First) (Middle) 804 CARNEGIE CENTER 3. Date of Earliest Transaction (Month/Day/Year) 06/05/2026 (Street) PRINCETON, NJ 08540 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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, par value $.01 per share 06/05/2026 M 22,328(1) A $ 0 101,591 D Common Stock, par value $.01 per share 06/05/2026 M 1,410(2) A $129.2 103,001 D Common Stock, par value $.01 per share 06/05/2026 F 1,267(3) D $129.2 101,734 D Common Stock, par value $.01 per share 06/05/2026 F 12,142(4) D $129.2 89,592 D

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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 Underlying Securities (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 of Derivative Security: 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

Dividend Equivalent Rights

$ 0

06/05/2026

M

1,410

06/05/2026

06/05/2026

Common Stock, par value $.01 per share

1,410

$129.2

1,410

D

Relative Performance Stock Units

$ 0

06/05/2026

M

22,328

06/05/2026

06/05/2026

Common Stock, par value $.01 per share

22,328

$129.2

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Chung Bruce 804 CARNEGIE CENTER PRINCETON, NJ 08540			EVP & CFO

Signatures

Christine Zoino, by Power of Attorney		06/09/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The Reporting Person was issued 22,328 Relative Performance Stock Units by NRG Energy, Inc. under NRG's Long-Term Incentive Plan that vested subject to certain performance conditions on June 5, 2026.
(2)	In connection with the vesting of the RPSUs described above, an incremental 1,410 Dividend Equivalent Rights vested. Each DER is the economic equivalent of one share of Common Stock.
(3)	On June 5, 2023, the Reporting Person was issued 6,975 RSUs by NRG under the NRG Energy, Inc. Long-Term Incentive Plan. On June 5, 2026, 2,330 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of Common Stock for RSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 1,267 shares of Common Stock to satisfy the Reporting Person's tax withholding obligation. In connection with the vesting of the RSUs, 147 DERs vested, resulting in the Reporting Person holding 378 DERs in the aggregate.
(4)	The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of Common Stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 12,142 shares of Common Stock to satisfy the Reporting Person's tax withholding obligation.

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