Vistra (NYSE: VST) accounting chief sells 4,600 shares in open-market trade

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Vistra Corp. senior vice president and chief accounting officer Margaret Montemayor reported an open-market sale of Common Stock. She sold 4,600 shares at $160.00 per share. After this transaction, she continues to hold 9,760 Vistra common shares directly, indicating she retains a significant personal stake in the company.

Insights

Vistra’s chief accounting officer made a moderate open-market share sale but remains a sizable shareholder.

The filing shows SVP and chief accounting officer Margaret Montemayor executed an open-market sale of 4,600 Vistra common shares at $160.00 per share. The transaction is coded as an open-market or private sale, which is typically a discretionary decision rather than a mechanistic event like tax withholding.

Following the sale, Montemayor directly holds 9,760 Vistra shares. Without data on total shares outstanding, the sale appears modest in scale and she retains a notable equity position. The filing lists no derivative positions, suggesting the reported holdings are entirely in common stock as of the transaction date.

Insider Trade Summary

Net Seller: 4,600 shares ($736,000)

Net Sell 1 txn

Insider Montemayor Margaret

Role SVP, Chief Accounting Officer

Sold 4,600 shs ($736K)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,600	$160.00	$736K

Holdings After Transaction: Common Stock — 9,760 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 4,600 shares Sale price: $160.00 per share Shares held after transaction: 9,760 shares +1 more

4 metrics

Shares sold 4,600 shares Open-market sale of Vistra common stock

Sale price $160.00 per share Price for the 4,600-share open-market sale

Shares held after transaction 9,760 shares Direct Vistra common stock holdings post-transaction

Transaction code S Sale in open market or private transaction

Key Terms

open-market sale, Common Stock, direct ownership, Form 4

4 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

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.

direct ownership financial

"ownership_type: "direct" and ownership_code: "D""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

06/04/2026 - 04:15 PM

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^*

Montemayor Margaret

(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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP, Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/02/2026		S		4,600	D	$160	9,760	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

Remarks:

	/s/ Daniela Gutierrez, as Attorney-in-Fact	06/04/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Vistra (VST) executive Margaret Montemayor report in this Form 4?

Margaret Montemayor reported an open-market sale of Vistra common stock. She sold 4,600 shares at $160.00 per share and, after the transaction, directly holds 9,760 shares in Vistra Corp., according to the Form 4 disclosure.

How many Vistra (VST) shares did the SVP and chief accounting officer sell?

The senior vice president and chief accounting officer sold 4,600 Vistra common shares. The transaction was reported as an open-market or private sale at a price of $160.00 per share, as disclosed in the Form 4 insider filing.

What price did Vistra (VST) insider shares sell for in this transaction?

The reported Vistra insider sale was executed at $160.00 per share. Margaret Montemayor sold 4,600 common shares at this price in an open-market transaction, as detailed in the Form 4 filed with the SEC.

How many Vistra (VST) shares does Margaret Montemayor hold after the sale?

After the reported sale, Margaret Montemayor directly holds 9,760 Vistra common shares. This post-transaction holding reflects her remaining equity stake following the open-market sale of 4,600 shares at $160.00 per share.

Does the Vistra (VST) Form 4 show any option exercises or derivative positions?

The Form 4 shows no option exercises or derivative transactions for this event. It reports only a non-derivative open-market sale of 4,600 Vistra common shares, and no remaining derivative positions are listed in the derivative summary.