Vistra Corp. (VST) director receives 1,268-share stock award

Rhea-AI Filing Summary

Ackermann Hilary E. reported acquisition or exercise transactions in this Form 4 filing.

Vistra Corp. director Hilary E. Ackermann received an award of 1,268 shares of common stock on May 15, 2026. The shares were granted at no cash cost per share, increasing her directly held position to 68,852 shares. This is a compensation-related equity grant rather than an open-market purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ackermann Hilary E.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,268	$0.00	--

Holdings After Transaction: Common Stock — 68,852 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 1,268 shares Grant price per share: $0.00 per share Shares owned after grant: 68,852 shares +1 more

4 metrics

Shares granted 1,268 shares Equity award of common stock on May 15, 2026

Grant price per share $0.00 per share Reported transaction price for awarded shares

Shares owned after grant 68,852 shares Total direct holdings following the transaction

Transaction code A (grant, award, or other acquisition) Non-derivative Form 4 transaction classification

Key Terms

Grant, award, or other acquisition, Common Stock, non-derivative, direct ownership

4 terms

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

Common Stock financial

"security_title: Common Stock reported for the transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

non-derivative financial

"transaction_type: non-derivative for the reported shares"

direct ownership financial

"ownership_type: direct with code D for the shares"

Form 4 Insider Transactions: What Each Field Means →

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^*

Ackermann Hilary E.

(Last) (First) (Middle)

6555 SIERRA DRIVE

(Street)

IRVING TEXAS 75039

(City) (State) (Zip)

UNITED STATES

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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	05/15/2026		A		1,268	A	$0	68,852	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:

Remarks:

	/s/ Daniela Gutierrez, as Attorney-in-Fact	05/19/2026
	** 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)

FAQ

What did Vistra Corp. (VST) director Hilary Ackermann report in this Form 4?

Hilary E. Ackermann reported receiving 1,268 Vistra Corp. common shares as an equity award. The grant increased her directly owned stake to 68,852 shares and involved no cash purchase price per share.

Was Hilary Ackermann buying or selling Vistra Corp. (VST) stock?

Hilary Ackermann was not buying or selling in the market; she received 1,268 shares as a grant. This compensation-related acquisition increased her direct holdings to 68,852 Vistra Corp. common shares.

How many Vistra Corp. (VST) shares does Hilary Ackermann now hold?

After the reported grant, Hilary Ackermann directly holds 68,852 Vistra Corp. common shares. This includes the 1,268-share equity award she received on May 15, 2026, at no cash cost per share.

What was the price per share for Hilary Ackermann’s Vistra (VST) stock grant?

The 1,268 Vistra Corp. shares granted to Hilary Ackermann carried a reported price of $0.00 per share. This indicates a compensation grant, not an open-market purchase requiring cash payment.

Does this Vistra Corp. (VST) Form 4 show any derivative or option exercises?

This Form 4 does not show any derivative or option exercises for Hilary Ackermann. It reports a single non-derivative transaction: a grant of 1,268 Vistra Corp. common shares increasing direct ownership to 68,852 shares.