Vistra (VST) EVP granted 5,356 shares as RSUs, 1,963 withheld for taxes

Rhea-AI Filing Summary

Vistra Corp. reported that EVP and General Counsel Stephanie Zapata Moore acquired 5,356 shares of common stock as a grant of restricted stock units approved by the board’s compensation committee. In a related transaction, 1,963 shares at $167.40 per share were withheld by the company to cover taxes upon vesting. After these transactions, she directly holds 124,409 common shares.

Insights

Equity Compensation Analyst

Routine equity award with automatic tax withholding; no open-market trading.

The filing shows Stephanie Zapata Moore, EVP and General Counsel of Vistra Corp., receiving 5,356 common shares via restricted stock unit grant tied to the company’s annual equity program, approved by the board’s Social Responsibility and Compensation Committee.

A separate disposition of 1,963 shares at $167.40 per share reflects shares withheld by the company to pay taxes on vesting, not an open-market sale or discretionary trade. Following these non-cash, compensation-related entries, her direct ownership stands at 124,409 common shares, a largely administrative update.

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

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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^*

Moore Stephanie Zapata

(Last) (First) (Middle)

6555 SIERRA DRIVE

(Street)

IRVING TX 75039

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Vistra Corp. [ VST ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP and General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

4. If Amendment, Date of 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

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	03/05/2026		A		5,356(1)	A	$0	126,372	D
Common Stock	03/05/2026		F		1,963(2)	D	$167.4	124,409	D

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. In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

2. This transaction represents the withholding by the Issuer of shares to pay taxes in connection with the vesting of restricted stock units. The timing and amount of the transaction were determined by the terms of the applicable restricted stock unit award and were not within the control of the Reporting Person.

Remarks:

	/s/ Daniela Gutierrez, as Attorney-in-Fact	03/09/2026
	** 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.

FAQ

What did Vistra (VST) report about Stephanie Zapata Moore’s recent stock award?

Vistra reported that EVP and General Counsel Stephanie Zapata Moore received a grant of 5,356 restricted stock units of common stock. The award was approved by the board’s Social Responsibility and Compensation Committee as part of the company’s annual equity grant program.

Were any Vistra (VST) shares sold by Stephanie Zapata Moore in this Form 4?

The Form 4 shows 1,963 Vistra shares disposed of at $167.40 per share, but this was tax withholding, not an open-market sale. The company withheld shares to pay taxes triggered by vesting of restricted stock units, consistent with the award’s terms.

How many Vistra (VST) shares does Stephanie Zapata Moore own after these transactions?

After the equity grant and tax withholding, Stephanie Zapata Moore directly owns 124,409 Vistra common shares. This figure reflects the net result of receiving 5,356 shares from a restricted stock unit grant and 1,963 shares withheld by the company for tax obligations.

What is the significance of transaction code A in Vistra (VST) Stephanie Zapata Moore’s Form 4?

Transaction code A indicates an acquisition of shares through a grant, award, or similar method, not an open-market purchase. Here, it represents 5,356 Vistra common shares received via restricted stock units as part of the company’s annual equity compensation program for executives.

What does transaction code F mean in the Vistra (VST) Form 4 for Stephanie Zapata Moore?

Transaction code F signals a disposition of shares used to satisfy tax or exercise costs, rather than a discretionary sale. In this case, 1,963 Vistra shares at $167.40 were withheld by the issuer to cover taxes owed upon vesting of restricted stock units.