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 * BURKE JAMES A 2. Issuer Name and Ticker or Trading Symbol Vistra Corp. [VST] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 6555 SIERRA DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 09/10/2025 (Street) IRVING, TX 75039 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 09/10/2025 M(1) 17,600 A $14.03 229,582 D Common Stock 09/10/2025 S(1) 17,600(2) D $200.5 211,982 D Common Stock 09/10/2025 M(1) 4,400 A $19.68 216,382 D Common Stock 09/10/2025 S(1) 1,992(3) D $203.23(4) 214,390 D Common Stock 09/11/2025 M(1) 40,909 A $14.03 255,299 D Common Stock 09/11/2025 M(1) 4,800 A $19.68 260,099 D Common Stock 09/11/2025 S(1) 43,074(5) D $208.75(6) 217,025 D Common Stock 09/11/2025 G(1) 27,893 D $ 0 189,132 D Common Stock 701,514 I By JAMEB, LP, a limited partnership jointly owned by Reporting Person and his spouse Common Stock 34,000 I By the James A. Burke 2012 Irrevocable Trust, dated 12/03/2012 Common Stock 259 I By the Marti E. Burke 2012 Irrevocable Trust, dated 10/16/2012

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

2016 Employee Stock Option (right to buy)

$14.03

09/10/2025

M(1)

17,600

(7)

10/11/2026

Common Stock

17,600

$ 0

403,453

D

2018 Employee Stock Option (right to buy)

$19.68

09/10/2025

M(1)

4,400

(8)

04/09/2027

Common Stock

4,400

$ 0

562,600

D

2016 Employee Stock Option (right to buy)

$14.03

09/11/2025

M(1)

40,909

(7)

10/11/2026

Common Stock

40,909

$ 0

362,544

D

2018 Employee Stock Option (right to buy)

$19.68

09/11/2025

M(1)

4,800

(8)

04/09/2027

Common Stock

4,800

$ 0

557,800

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BURKE JAMES A 6555 SIERRA DRIVE IRVING, TX 75039	X		President and CEO

Signatures

/s/ Daniela Gutierrez, as Attorney-in-Fact		09/12/2025
**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)	This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 12, 2025.
(2)	Includes an aggregate of approximately (i) 1,232 shares sold for the cashless exercise of the stock options; and (ii) 6,441 shares sold to pay taxes in connection with the exercise of the stock options.
(3)	Includes an aggregate of approximately (i) 427 shares sold for the cashless exercise of the stock options; and (ii) 1,565 shares sold to pay taxes in connection with the exercise of the stock options.
(4)	Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $203.190 to $203.595, inclusive. For all transactions reported in this Form 4 utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(5)	Includes an aggregate of approximately (i) 3,203 shares sold for the cashless exercise of the stock options; and (ii) 16,728 shares sold to pay taxes in connection with the exercise of the stock options.
(6)	Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $208.11 to $208.78, inclusive. For all transactions reported in this Form 4 utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(7)	The options vested in four equal annual installments beginning October 3, 2017.
(8)	The options vested 50% 4 years from the grant date with the remaining 50% vesting 5 years from the grant date.
Remarks: Exhibit 24. Power of Attorney

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