Vista Energy director exercises 6,000 RSUs

Vista Energy director Pierre Jean Sivignon exercised equity awards and had shares withheld for taxes.

Rhea-AI Filing Summary

Vista Energy director Pierre Jean Sivignon exercised equity awards and had shares withheld for taxes. On April 9, 2026, he exercised 6,000 Restricted Stock Units, receiving the same number of Series A shares at a reported price of $0.00 per share. In a related transaction, 1,500 Series A shares were disposed of at $65.08 per share to satisfy tax obligations, a non-market "F" code tax-withholding disposition rather than an open-market sale. Following these transactions, Sivignon directly holds 109,500 Series A shares, represented by 109,500 American Depositary Shares, consolidating his equity position in the company.

Insider Trade Summary

6,000 shares exercised/converted

Exercise 3 txns

Insider Sivignon Pierre Jean

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	6,000	$0.00	$0.00
Exercise	Series A Shares	6,000	$0.00	$0.00
Exercise Price or Tax Liability	Series A Shares	1,500	$65.08	$98K

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Series A Shares — 109,500 shares (Direct)

Footnotes (2)

1. F1. Each Restricted Stock Unit represents a contingent right to receive one series A share of the Company or the value thereof in cash.
2. F2. 109,500 series A shares represented by 109,500 American Depositary Shares ("ADSs"). Each ADS represents one series A share.

Key Figures

RSUs exercised: 6,000 units Tax-withholding shares: 1,500 shares Tax-withholding price: $65.08 per share +1 more

4 metrics

RSUs exercised 6,000 units Restricted Stock Units converted into Series A shares on April 9, 2026

Tax-withholding shares 1,500 shares Series A shares delivered for tax obligations at $65.08 per share

Tax-withholding price $65.08 per share Price used for 1,500-share tax-withholding disposition

Shares held after transaction 109,500 shares Series A shares held directly, represented by 109,500 ADSs

Key Terms

Restricted Stock Units, American Depositary Shares, tax-withholding disposition, derivative exercise/conversion

4 terms

Restricted Stock Units financial

"Each Restricted Stock Unit represents a contingent right to receive one series A share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

American Depositary Shares financial

"109,500 series A shares represented by 109,500 American Depositary Shares ("ADSs")"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

derivative exercise/conversion financial

"transaction_action: derivative exercise/conversion for the RSU transaction"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Vista Energy (VIST) director Pierre Jean Sivignon report?

Pierre Jean Sivignon reported exercising 6,000 Restricted Stock Units into Series A shares, with 1,500 shares disposed of to cover tax obligations. After these transactions, he directly holds 109,500 Series A shares represented by 109,500 American Depositary Shares.

How many Vista Energy (VIST) shares does Pierre Jean Sivignon hold after this Form 4?

After the reported transactions, Pierre Jean Sivignon directly holds 109,500 Series A shares of Vista Energy. A footnote states these are represented by 109,500 American Depositary Shares, with each ADS corresponding to one Series A share.

What was the nature of the 6,000 Restricted Stock Units in Vista Energy (VIST) Form 4?

The 6,000 Restricted Stock Units represented a contingent right to receive one Series A share or the cash value of a share. On April 9, 2026, these RSUs were exercised, converting into 6,000 Series A shares at a reported price of $0.00 per share.

Was the 1,500-share Vista Energy (VIST) disposition an open-market sale?

The 1,500-share transaction was coded "F" as a tax-withholding disposition, not an open-market sale. Shares were delivered at $65.08 per share to satisfy tax liabilities related to the equity award exercise.

What does the American Depositary Shares (ADSs) footnote mean for Vista Energy (VIST)?

A footnote explains that 109,500 Series A shares are represented by 109,500 American Depositary Shares. Each ADS corresponds to one Series A share, clarifying how Sivignon’s direct holdings are represented in depositary form for investors.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/13/2026 - 05:26 PM Learn about SEC filing dates

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^*

Sivignon Pierre Jean

(Last) (First) (Middle)

AVENIDA PASEO DE LA REFORMA 243, PISO 18

(Street)

CIUDAD DE MEXICO CUAUHTEMOC MEXICO 06500

(City) (State) (Zip)

MEXICO

(Country)

2. Issuer Name and Ticker or Trading Symbol
Vista Energy, S.A.B. de C.V. [ VIST ]

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
[BMV: VISTA]

3. Date of Earliest Transaction (Month/Day/Year)
04/09/2026

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
Series A Shares	04/09/2026		M(1)		6,000	A	(1)	111,000	D
Series A Shares	04/09/2026		F		1,500	D	$65.08	109,500(2)	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
Restricted Stock Units	(1)	04/09/2026		M			6,000	04/09/2026	(1)	Series A Shares / ADSs	6,000	$0	0	D

Explanation of Responses:

1. Each Restricted Stock Unit represents a contingent right to receive one series A share of the Company or the value thereof in cash.

2. 109,500 series A shares represented by 109,500 American Depositary Shares ("ADSs"). Each ADS represents one series A share.

	/s/ Pierre Jean Sivignon	04/13/2026
	** 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)