Vista Energy sets October 28 for Q3 results release

The results webcast is scheduled for October 29, 2026, at 8:00 a.m. Mexico City time.

Rhea-AI Filing Summary

Vista Energy, S.A.B. de C.V. announced that it will release its consolidated financial statements for the third quarter on Wednesday, October 28, 2026, after market closes. The company will present the results through a webcast on Thursday, October 29, 2026, at 8:00 a.m. Mexico City time (10:00 a.m. ET; 11:00 a.m. BAT).

Key Terms

consolidated financial statements, forward-looking statements, Form 20-F

3 terms

consolidated financial statements financial

"release its consolidated financial statements for the third quarter"

Consolidated financial statements combine the financial results of a parent company and all the companies it controls into one set of reports, like showing the whole family’s budget instead of each person’s separate accounts. For investors this matters because it gives a complete picture of assets, debts, revenue and cash flow across the entire group, helping assess true size, risk and profitability without missing or double-counting related activity.

forward-looking statements regulatory

"Any statements contained herein or in the attachments hereto regarding Vista"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

Form 20-F regulatory

"annual report filed with the SEC on Form 20-F"

Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.

FAQ

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

When will VIST release its third-quarter 2026 results?

Vista Energy said it will release its consolidated financial statements for the third quarter on Wednesday, October 28, 2026, after market closes. The results webcast is scheduled for Thursday, October 29, 2026, at 8:00 a.m. Mexico City time.

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

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Available on EDGAR 09/23/2026 - 05:01 PM Accepted by SEC EDGAR 09/23/2026 - 05:00 PM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER SECURITIES EXCHANGE ACT OF 1934

For the month of September 2026

Commission File No. 001-39000

Vista Energy, S.A.B. de C.V.

(Exact Name of the Registrant as Specified in the Charter)

N.A.

(Translation of Registrant’s Name into English)

Torre Mapfre,

243 Paseo de la Reforma Avenue, 18^th Floor

Colonia Cuauhtémoc, Alcaldía Cuauhtémoc

06500, Mexico City

Mexico

(Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒   Form 40-F ☐

Advance Notice of 3rd Quarter of 2026 Results

Mexico City, September 23, 2026 — Vista Energy, S.A.B. de C.V. (“Vista” or the “Company”) (NYSE: VIST; BMV: VISTA) announced today that it will release its consolidated financial statements for the third quarter of this year on Wednesday, October 28, 2026, after market closes.

The Company will present the results through a webcast on Thursday, October 29, 2026, at 8:00 am Mexico City time (10:00 am ET; 11:00 am BAT).

The webcast will be accessible on the Company’s website, at https://www.vistaenergy.com/en/investors.

Forward-Looking Statements

Any statements contained herein or in the attachments hereto regarding Vista that are not historical or current facts are forward-looking statements. These forward-looking statements convey Vista’s current expectations or forecasts of future events. Forward-looking statements regarding Vista involve known and unknown risks, uncertainties and other factors that may cause Vista’s actual results, performance or achievements to be materially different from any future results, performances or achievements expressed or implied by the forward-looking statements. Certain of these risks and uncertainties are described in the “Risk Factors,” “Forward-Looking Statements” and other applicable sections of Vista’s annual report filed with the United States Securities and Exchange Commission (“SEC”) on Form 20-F and other applicable filings with the SEC and Vista’s latest annual report available on the Mexican Stock Exchange’s (Bolsa Mexicana de Valores, S.A.B. de C.V.) website: www.bmv.com.mx, the Mexican National Banking and Securities Commission (Comisión Nacional Bancaria y de Valores) website: www.gob.mx/cnbv and our website: www.vistaenergy.com.

Enquiries:

Investor Relations:

ir@vistaenergy.com

Argentina: +54 11 3754 8500

Mexico: +52 55 8647 0128

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: September 23, 2026

VISTA ENERGY, S.A.B. DE C.V.
By:		/s/ Alejandro Cherñacov
Name:		Alejandro Cherñacov
Title:		Strategic Planning and Investor Relations Officer