Vistra (NYSE: VST) director sells 15,000 shares under 10b5-1

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Vistra Corp. director Arcilia Acosta reported open-market sales of 15,000 shares of common stock. On June 18, 2026, she sold 7,500 shares at $170.00 per share and 7,500 shares at a weighted-average price of $165.04, in multiple trades between $165.00 and $165.04.

The filing notes these transactions were made under a pre-arranged Rule 10b5-1 trading plan adopted on March 16, 2026. After the reported sales, she continues to hold more than 32,000 Vistra shares directly.

Insider Trade Summary 10b5-1

Net Seller: 15,000 shares ($2,512,800)

Net Sell 2 txns

Insider Acosta Arcilia

Role null

Sold 15,000 shs ($2.51M)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,500	$165.04	$1.24M
Sale	Common Stock	7,500	$170.00	$1.27M

Holdings After Transaction: Common Stock — 40,107 shares (Direct, null)

Footnotes (1)

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026. Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $165.00 to $165.04, 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.

Key Figures

Total shares sold: 15,000 shares First sale price: $170.00 per share Second sale weighted-average price: $165.04 per share +4 more

7 metrics

Total shares sold 15,000 shares Open-market sales on June 18, 2026

First sale price $170.00 per share 7,500 shares of common stock

Second sale weighted-average price $165.04 per share 7,500 shares, trades from $165.00 to $165.04

Shares after one sale line 32,607 shares Directly owned following one reported transaction

Shares after other sale line 40,107 shares Directly owned following the other reported transaction

Rule 10b5-1 plan adoption date March 16, 2026 Plan governing the reported trades

Transaction date June 18, 2026 Date of both open-market sales

Key Terms

Rule 10b5-1 trading plan, weighted-average price, open-market sale, Common Stock, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted-average price financial

"Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging"

Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.

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.

Form 4 regulatory

"For all transactions reported in this Form 4 utilizing a weighted-average price"

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 →

Available on EDGAR 06/23/2026 - 04:23 PM Accepted by SEC EDGAR 06/23/2026 - 04:23 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^*

Acosta Arcilia

(Last)

(First)

(Middle)

6555 SIERRA DR.

(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)
06/18/2026

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	06/18/2026		S⁽¹⁾		7,500	D	$165.04⁽²⁾	40,107	D
Common Stock	06/18/2026		S⁽¹⁾		7,500	D	$170	32,607	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:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026.

2. Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $165.00 to $165.04, 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.

Remarks:

	/s/ Daniela Gutierrez, as Attorney-in-Fact	06/23/2026
	** 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 Corp. (VST) director Arcilia Acosta report in this Form 4?

Director Arcilia Acosta reported selling a total of 15,000 Vistra Corp. common shares. The transactions were open-market sales executed in two blocks of 7,500 shares each on June 18, 2026, at prices around $170.00 and a weighted-average of $165.04.

At what prices did Arcilia Acosta sell Vistra (VST) shares?

She sold 7,500 Vistra shares at $170.00 per share and another 7,500 shares at a weighted-average price of $165.04. The weighted-average block reflects multiple trades between $165.00 and $165.04, as disclosed in the filing’s pricing footnote.

How many Vistra (VST) shares does Arcilia Acosta hold after these sales?

After the reported transactions, the filing shows she continues to directly own more than 32,000 Vistra common shares. One transaction line lists 32,607 shares following the sale, indicating she retains a substantial ongoing equity stake in the company.

Were Arcilia Acosta’s Vistra (VST) stock sales under a Rule 10b5-1 plan?

Yes. The filing states the transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on March 16, 2026. Such plans pre-schedule trades, making the timing more routine and less reflective of short-term views on Vistra’s share price.

What is the significance of the weighted-average price disclosed for Vistra (VST) sales?

The filing explains that the $165.04 figure is a weighted-average of multiple trades between $165.00 and $165.04. It notes that detailed trade-by-trade pricing information will be provided to Vistra, any shareholder, or SEC staff upon request.