Vista Energy (VIST) director Segal exercises 6,000 RSUs, holds 178,983 shares

Rhea-AI Filing Summary

Vista Energy director Susan Segal exercised Restricted Stock Units into common equity. On April 9, 2026, she converted 6,000 Restricted Stock Units, each representing one Series A share or cash value, into 6,000 Series A Shares at a stated price of $0.00 per share.

Following this derivative exercise, Segal directly held a total of 178,983 Series A Shares, including 112,983 Series A Shares held directly and 66,000 Series A Shares represented by 66,000 American Depositary Shares. The filing shows no share sales or dispositions in this transaction, indicating an exercise-and-hold pattern rather than an exercise-and-sell.

Insights

Equity compensation analyst

Director exercised 6,000 units and retained all resulting Vista Energy shares.

The filing shows director Susan Segal exercising 6,000 Restricted Stock Units into Series A Shares on April 9, 2026. No sales or tax-withholding dispositions are reported, so the net result is a straightforward increase in her direct equity stake.

After the transaction, Segal directly holds 178,983 Series A Shares, including 112,983 shares plus 66,000 shares represented by ADSs. The exercised amount is a small portion of her total holdings, consistent with routine equity compensation rather than a directional market call. The derivative summary shows no remaining derivative position from these units.

Insider Trade Summary

6,000 shares exercised/converted

Mixed 2 txns

Insider SEGAL SUSAN

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	6,000	$0.00	--
Exercise	Series A Shares	6,000	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct); Series A Shares — 178,983 shares (Direct)

Footnotes (1)

1. Each Restricted Stock Unit represents a contingent right to receive one series A share of the Company or the value thereof in cash. 112,983 series A shares held directly and 66,000 series A shares represented by 66,000 American Depositary Shares ("ADSs"). Each ADS represents one series A share.

Key Figures

RSUs exercised: 6,000 units Shares received from exercise: 6,000 Series A Shares Total direct holdings after transaction: 178,983 Series A Shares +3 more

6 metrics

RSUs exercised 6,000 units Restricted Stock Units converted on April 9, 2026

Shares received from exercise 6,000 Series A Shares Result of RSU exercise at $0.00 per share

Total direct holdings after transaction 178,983 Series A Shares Direct ownership following April 9, 2026 exercise

Directly held shares component 112,983 Series A Shares Portion held as ordinary shares, per footnote

ADS-represented shares 66,000 Series A Shares Represented by 66,000 American Depositary Shares

ADS ratio 1 ADS : 1 Series A Share Each ADS represents one Series A Share

Key Terms

Restricted Stock Units, American Depositary Shares, Series A Shares, Exercise or conversion of derivative security

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

"66,000 series A shares represented by 66,000 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.

Series A Shares financial

"underlying security title: "Series A Shares / ADSs" and in footnote describing holdings"

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

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^*

SEGAL SUSAN

(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)	178,983(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. 112,983 series A shares held directly and 66,000 series A shares represented by 66,000 American Depositary Shares ("ADSs"). Each ADS represents one series A share.

	/s/ Susan L Segal	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)

FAQ

What insider transaction did Vista Energy (VIST) director Susan Segal report?

Director Susan Segal reported exercising 6,000 Restricted Stock Units into Series A Shares of Vista Energy. These units converted on April 9, 2026, at a stated price of $0.00 per share, increasing her directly held common equity without any reported share sales or dispositions.

How many Vista Energy (VIST) shares does Susan Segal hold after this Form 4?

After the transaction, Susan Segal holds 178,983 Series A Shares of Vista Energy directly. This total includes 112,983 Series A Shares held directly and 66,000 Series A Shares represented by 66,000 American Depositary Shares, as disclosed in the filing’s footnotes.

Did Susan Segal sell any Vista Energy (VIST) shares in this Form 4 filing?

No, the Form 4 reports no sales or dispositions of Vista Energy shares by Susan Segal. It only shows the exercise of 6,000 Restricted Stock Units into 6,000 Series A Shares, with her overall direct holdings increasing and no tax-withholding or sale transactions listed.

What are the terms of the Restricted Stock Units in the Vista Energy (VIST) filing?

Each Restricted Stock Unit represents a contingent right to receive one Vista Energy Series A Share or its cash value. In this filing, 6,000 units were exercised on April 9, 2026, converting into 6,000 Series A Shares at a stated price of $0.00 per share.

How are Vista Energy (VIST) American Depositary Shares related to Series A Shares in this filing?

The filing states that 66,000 Series A Shares are represented by 66,000 American Depositary Shares. Each American Depositary Share corresponds to one Series A Share, so these ADSs are simply another form of holding the same underlying Vista Energy equity.

What type of transaction code appears in Susan Segal’s Vista Energy (VIST) Form 4?

The transaction uses code “M,” described as an exercise or conversion of a derivative security. Here, 6,000 Restricted Stock Units were exercised into 6,000 Series A Shares, reflecting an acquisition of shares through equity compensation rather than an open-market purchase or sale.