Vista Energy (VIST) COO details Series A shares, options, RSUs and PSUs

Rhea-AI Filing Summary

Vista Energy, S.A.B. de C.V. executive Matias Weissel, Chief Operations Officer, reported his initial ownership of the company’s securities. He holds 182,967 Series A shares directly, including shares represented by American Depositary Shares.

Weissel also holds several blocks of employee stock options over Series A shares/ADSs, such as 201,923 underlying shares at an exercise price of $52.3000, and additional grants at exercise prices ranging from $2.1000 to $54.0900 with expirations between 2030 and 2036. He further holds 13,377 Restricted Stock Units and 40,403 Performance Stock Units, each representing a contingent right to receive one Series A share or cash, with vesting beginning on dates including December 1, 2026, January 2, 2027, December 31, 2026 and February 26, 2028, subject to specified conditions.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Weissel Matias

(Last) (First) (Middle)

AVENIDA PASEO DE LA REFORMA 243, PISO 18

(Street)

CIUDAD DE MEXICO CUAUHTEMOC MEXICO 06500

(City) (State) (Zip)

MEXICO

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

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

3a. Foreign Trading Symbol
[BMV: VISTA]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operations Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Series A Shares	182,967(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Options (Right to Buy)	(2)	04/28/2030	Series A Shares / American Depositary Shares ("ADSs")	50,000	$2.1	D
Employee Stock Options (Right to Buy)	(2)	04/01/2031	Series A Shares / ADSs	40,650	$2.85	D
Employee Stock Options (Right to Buy)	(2)	04/01/2032	Series A Shares / ADSs	32,683	$7.05	D
Employee Stock Options (Right to Buy)	(2)	04/01/2033	Series A Shares / ADSs	7,806	$17.83	D
Employee Stock Options (Right to Buy)	04/01/2026	04/01/2033	Series A Shares / ADSs	3,904	$17.83	D
Employee Stock Options (Right to Buy)	(2)	04/01/2034	Series A Shares / ADSs	2,999	$32.02	D
Employee Stock Options (Right to Buy)	04/01/2026	04/01/2034	Series A Shares / ADSs	2,999	$32.02	D
Employee Stock Options (Right to Buy)	04/01/2027	04/01/2034	Series A Shares / ADSs	3,000	$32.02	D
Employee Stock Options (Right to Buy)(3)	(2)	01/02/2035	Series A Shares / ADSs	3,902	$54.09	D
Employee Stock Options (Right to Buy)(3)	01/02/2027	01/02/2035	Series A Shares / ADSs	3,902	$54.09	D
Employee Stock Options (Right to Buy)(3)	01/02/2028	01/02/2035	Series A Shares / ADSs	3,903	$54.09	D
Employee Stock Options (Right to Buy)(3)	01/02/2027	01/02/2036	Series A Shares / ADSs	5,329	$47.96	D
Employee Stock Options (Right to Buy)(3)	01/02/2028	01/02/2036	Series A Shares / ADSs	5,329	$47.96	D
Employee Stock Options (Right to Buy)(3)	01/02/2029	01/02/2036	Series A Shares / ADSs	5,329	$47.96	D
Employee Stock Options (Right to Buy)(3)	04/23/2028	04/23/2035	Series A Shares / ADSs	201,923	$52.3	D
Restricted Stock Unit(4)	(4)	(4)	Series A Shares / ADSs	13,377	(4)	D
Performance Stock Unit(5)	(5)	(5)	Series A Shares / ADSs	40,403	(5)	D

Explanation of Responses:

1. 54,516 series A shares held directly and 128,451 series A shares represented by 128,451 American despositary shares. Each American depositary share respresents one series A share.

2. Stock Options vested and exercisable through the date indicated under "Expiration Date."

3. Stock Options will vest on the date indicated under "Date Exercisable," and are exercisable through the date indicated under "Expiration Date."

4. Each Restricted Stock Unit represents a contingent right to receive one series A share of the Company or the value thereof in cash. RSUs may vest commencing on the following dates, subject to the satisfaction of certain conditions: 1,593 RSUs on 12/01/2026, 4,622 RSUs on 01/02/2027, 4,621 RSUs on 01/02/2028 and 2,541 RSUs on 01/02/2029.

5. Each Performance Stock Unit (PSUs) represents a contingent right to receive one series A share of the Company or the value thereof in cash. PSUs may vest commencing on the following dates, subject to the satisfaction of certain conditions: 15,037 PSUs on 12/31/2026 and 25,366 PSUs on 02/26/2028.

	/s/ Matias Weissel	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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* Form 3: SEC 1473 (03-26)