ASUR shareholders approve ordinary dividend

Grupo Aeroportuario del Sureste (ASUR) held its General Annual Ordinary Shareholders’ Meeting in Mexico City on April 23, 2026, where shareholders approved resolutions including the payment of an ordinary dividend.

Rhea-AI Filing Summary

Grupo Aeroportuario del Sureste (ASUR) held its General Annual Ordinary Shareholders’ Meeting in Mexico City on April 23, 2026, where shareholders approved resolutions including the payment of an ordinary dividend. The dividend will be paid starting May 28, 2026 through S.D. Indeval’s Variable Income department in Mexico City against delivery of coupon 22 of the outstanding stock certificates.

The meeting also appointed special delegates to appear before a notary public to formalize the minutes and give effect to the approved resolutions. ASUR operates 16 airports across Mexico, Colombia and Puerto Rico, and its ADSs trade on the NYSE under the symbol ASR, with one ADS representing ten B-series shares.

Key Figures

Meeting date: April 23, 2026 Dividend payment start date: May 28, 2026 Coupon number for dividend: Coupon 22 +5 more

8 metrics

Meeting date April 23, 2026 General Annual Ordinary Shareholders’ Meeting in Mexico City

Dividend payment start date May 28, 2026 Start of ordinary dividend payment via S.D. Indeval

Coupon number for dividend Coupon 22 Required coupon of outstanding stock certificates for dividend payment

ADS share ratio 1 ADS = 10 B-series shares Representation of ASUR equity on the NYSE

Total airports operated 16 airports Airports operated across Mexico, Colombia and Puerto Rico

Mexican airports 9 airports Airports operated in southeast Mexico including Cancún

Colombian airports 6 airports Airports operated in northern Colombia including Medellin international airport

Stake in Aerostar Airport Holdings 60% interest Ownership in operator of San Juan’s Luis Muñoz Marín International Airport

Key Terms

ordinary dividend, General Annual Ordinary Shareholders’ Meeting, public–private partnership, ADS, +1 more

5 terms

ordinary dividend financial

"Payment of the ordinary dividend shall be made through the Variable Income"

An ordinary dividend is a routine cash payment a company makes to its shareholders out of regular earnings, paid on a predictable schedule rather than as a one‑time special payout. It matters to investors because it provides ongoing income and signals that a company has steady cash flow and management confidence; think of it like a regular paycheck that helps assess how reliable and attractive a stock is for income-focused investors.

General Annual Ordinary Shareholders’ Meeting regulatory

"at the General Annual Ordinary Shareholders' Meeting held in Mexico City on April 23rd, 2026"

public–private partnership financial

"the only major airport in the U.S. to have successfully completed a public–private partnership under the FAA Pilot Program"

A public–private partnership is a formal agreement where a government agency and a private company share responsibility for delivering, funding, operating, or maintaining a public project or service—such as roads, hospitals, or utilities—with risks, payments and duties split between them. It matters to investors because these deals create long-term contracts and revenue streams tied to government objectives and performance, while also exposing returns to political, regulatory and operational risks—like a private firm jointly running a public asset under a multi-year lease.

ADS financial

"One ADS represents ten (10) B-series shares."

Ads are paid promotional messages a company places across media — online, on TV, in print, or on social platforms — to attract customers, explain products, or shape public perception. For investors, ads matter because they drive sales growth, affect how much a company must spend to win customers, and influence brand strength and long-term value. Ads can also create regulatory or reputational risk if claims are misleading, which can affect profits and stock price.

Variable Income (Renta Variable) financial

"through the Variable Income (Renta Variable) department of S.D. Indeval, S.A. de C.V."

FAQ

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

What did ASR shareholders approve at the April 23, 2026 meeting?

Shareholders approved resolutions at ASR’s General Annual Ordinary Shareholders’ Meeting, including paying an ordinary dividend. They also appointed special delegates to formalize the minutes before a notary and carry out actions needed to implement the approved resolutions.

When will Grupo Aeroportuario del Sureste (ASR) pay the approved dividend?

ASUR will begin paying the approved ordinary dividend on May 28, 2026. Payments will be processed Monday through Friday from 9:30 to 13:00 via S.D. Indeval’s Variable Income department in Mexico City, against delivery of coupon 22.

How will ASR shareholders receive the ordinary dividend?

Shareholders will receive the ordinary dividend through S.D. Indeval, S.A. de C.V., Variable Income department, at its Mexico City offices. Payment is made against delivery of coupon 22 of the outstanding stock certificates, following the terms notified to shareholders.

Where will ASR publish its dividend payment notices?

Dividend payment notices will be published no later than April 24, 2026 in a newspaper of general circulation. This publication informs shareholders about the operational details and timing of the ordinary dividend payment process.

What airports does Grupo Aeroportuario del Sureste (ASR) operate?

ASUR operates 16 airports across the Americas, including nine in southeast Mexico such as Cancún Airport, six in northern Colombia including Medellin international airport, and a 60% interest in the operator of San Juan’s Luis Muñoz Marín International Airport in Puerto Rico.

How are ASR shares represented on the NYSE as ADSs?

On the NYSE, ASUR trades under the symbol ASR through American Depositary Shares (ADSs). Each ADS represents ten B-series shares of the company, allowing international investors to access ASUR’s equity via U.S.-listed securities.

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

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Accepted by SEC EDGAR 04/23/2026 - 01:49 PM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

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

THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2026

GRUPO AEROPORTUARIO DEL SURESTE, S.A.B. de C.V.

(SOUTHEAST AIRPORT GROUP)

(Translation of Registrant’s Name Into English)

México

(Jurisdiction of incorporation or organization)

Bosque de Alisos No. 47A– 4th Floor

Bosques de las Lomas

05120 México, D.F.

(Address of principal executive offices)

(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  x  Form 40-F  ¨

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

Yes  ¨ No  x

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- .)

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.

Grupo Aeroportuario del Sureste, S.A.B. de C.V.
By:	/s/ ADOLFO CASTRO RIVAS
	Adolfo Castro Rivas
	Chief Executive Officer

Date: April 23, 2026

Exhibit 99.1

Contacts:
ASUR Lic. Adolfo Castro +52+55-5284-0408 acastro@asur.com.mx Lic. David Barlow +52-55-5284-0483 dbarlow@asur.com.mx		InspIR Group Susan Borinelli +1-646-330-5907 susan@inspirgroup.com

ASUR Announces Resolutions Approved at the

General Annual Ordinary Shareholders’ Meeting held on April 23^rd, 2026

MEXICO CITY, April 23^rd, 2026 - Grupo Aeroportuario del Sureste, S.A.B. de C.V. (NYSE: ASR; BMV: ASUR) (ASUR), a leading international airport group with operations in Mexico, the U.S. and Colombia, today announced that shareholders approved the following resolutions and considered the following matters at the General Annual Ordinary Shareholders' Meeting held in Mexico City on April 23^rd, 2026:

General Annual Ordinary Meeting

Summary of Resolutions

1. Approval of the report submitted by the Chief Executive Officer to the Board of Directors, accompanied by the independent auditor’s report, with respect to the operations and results of the Company during the fiscal year ended December 31^st, 2025, as well as the Board of Directors’ opinion regarding the content of said report.

2. Approval of the report submitted by the Board of Directors which contains the principal accounting and reporting policies and criteria followed in the preparation of the Company’s financial information. Furthermore, note was taken of the report submitted by the Board of Directors with respect to the transactions entered into with Related Persons and Relevant Shareholders, or contracts exceeding US$2,000,000.00.

3. Due note was taken that the report of the activities and operations in which the Board of Directors intervened, pursuant to Article 28 IV (e) of the Securities Market Law, was not prepared because during the fiscal year ended on December 31^st, 2025, the Board of Directors did not intervene in any such activities or operations to be reported.

4. Approval of the audited individual and consolidated financial statements of the Company for the year ended December 31^st, 2025.

5. Approval of the report submitted by the Audit and Corporate Practices Committee of the Company with respect to its activities during the fiscal year ended December 31^st, 2025.

6. Approval of the activities of the Board of Directors during the year ended December 31^st, 2025.

7. Approval of the report on fulfillment of the tax obligations of the Company for the fiscal year ended December 31^st, 2024. Due note was taken that the report for the year ended December 31^st, 2025 has not yet been issued and will be presented for approval at the first General Shareholders’ Meeting to be held after the report is issued.

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8. Approval to set aside Ps. 6.00 (six pesos and zero cents, Mexican legal tender) from the accumulated net profits for the year ended December 31^st, 2025 to increase the legal reserve of the Company, in accordance with Article 20 of the Mexican General Corporations Law (Ley General de Sociedades Mercantiles).

9. Approval of an ordinary net cash dividend from accumulated retained earnings in the amount of Ps. 10.00 (ten pesos and zero cents, Mexican legal tender) per share, payable in May 2026, to be paid out in a single installment to each of the outstanding, common, Series “B” and “BB” shares representing the paid-in capital stock of the Company, and that are issued, subscribed, fully paid and released on such date and (ii) the taxes that the Company incurs with respect to the dividend payment.

Payment of the ordinary dividend shall be made through the Variable Income (Renta Variable) department of S.D. Indeval, S.A. de C.V., at its offices located at Paseo de la Reforma No. 255-3^rd floor, Colonia Cuauhtemoc, 06500, Mexico City, Mexico, from Monday through Friday from 9:30 through 13:00 hours as of May 28^th, 2026. Payment of the dividend shall be made against delivery of coupon “22” (twenty-two) of the outstanding stock certificates in accordance with the terms notified to shareholders.

The dividend payment notices shall be published no later than April 24^th, 2026 in a newspaper in general circulation.

10. Approval to set aside all remaining accumulated net profits for the year ended December 31^st, 2025 for the repurchase of shares by the Company during the fiscal year 2026, pursuant to Article 56 of the Securities Market Law.

11. Approval of the activities of the Board of Directors, Chief Executive Officer, Secretary and Assistant Secretary during the year ended December 31^st, 2025, and release from any liability they might have incurred in the execution of their duties.

12. Ratification of all members and alternate members of the Board of Directors, as well as ratification of non-member Secretary and Assistant Secretary of the Board of Directors.

13. Ratification of Mr. Guillermo Ortiz Martínez as Chairman of the Audit Committee.

14. Ratification of Ms. Bárbara Garza Lagüera Gonda, Mr. Fernando Chico Pardo and Mr. José Antonio Pérez Antón as members of the Nominations and Compensation Committee.

15. Approval of the proposal made by the Nominations and Compensation Committee to pay the following compensation to the members of the management bodies of the Company:

- Each member of the Board of Directors will receive Ps. 110,000.00 (one hundred and ten thousand pesos 00/100 Mexican currency), plus travel expenses, if any, per meeting attended.

- Each member of the Audit and Corporate Practices Committee will receive Ps. 150,000.00 (one hundred and fifty thousand pesos 00/100 Mexican Currency), plus travel expenses, if any, per meeting attended.

- Each member of the Operations Committee will receive, Ps. 110,000.00 (one hundred and ten thousand pesos 00/100 Mexican currency), plus travel expenses, if any, per meeting attended.

- Each member of the Nominations and Compensation Committee will receive Ps. 110,000.00 (one hundred and ten thousand pesos 00/100 Mexican currency), plus travel expenses, if any, per meeting attended.

- Each member of the Acquisitions and Contracts Committee will receive Ps. 40,000.00 (forty thousand pesos 00/100 Mexican Currency), plus travel expenses, if any, per meeting attended.

ASUR Page 2 of 3

Special delegates of the Ordinary Annual General Shareholders’ Meeting were appointed to appear before a notary public to legalize the minutes of the meeting and to undertake any other action necessary to formalize and give effect to the resolutions taken at this meeting.

About ASUR

Grupo Aeroportuario del Sureste, S.A.B. de C.V. (ASUR) is a leading international airport operator with a portfolio of concessions to operate, maintain, and develop 16 airports across the Americas. The Company operates nine airports in southeast of Mexico, including Cancún Airport, the largest tourist gateway in Mexico, the Caribbean, and Latin America; as well as six airports in northern Colombia, including Medellin international airport (Rionegro), the second busiest in Colombia. 

ASUR also holds a 60% interest in Aerostar Airport Holdings, LLC, operator of Luis Muñoz Marin International Airport in San Juan, the capital of Puerto Rico, the island’s primary international gateway. San Juan Airport was the first and remains the only major airport in the U.S. to have successfully completed a public–private partnership under the FAA Pilot Program. ASUR has recently expanded into airport commercial services through ASUR US Airports, which partners with airports and airlines to deliver enhanced retail and passenger experiences. ASUR US Airports operates at major U.S. hubs, including Los Angeles International, Chicago O’Hare, and John F. Kennedy International, and has historically shown competitive performance against U.S. commercial revenue benchmarks.

Headquartered in Mexico, ASUR is listed on both the Mexican Bolsa (BMV) under the symbol ASUR, and on the NYSE in the U.S., where it trades under the symbol ASR. One ADS represents ten (10) B-series shares. For further information, visit www.asur.com.mx

- END -

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Filing Exhibits & Attachments

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Press Releases

• EX-99.1 EXHIBIT 99.1 29.9 KB