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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 October 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\nfiles or will file annual reports under cover of Form 20-F or Form 40-F.)

\n \n \n \n \n

Form 20-F x

Form 40-F ¨

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

\n \n \n \n \n

Yes ¨

No x

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

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

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

	Grupo Aeroportuario del Sureste, S.A.B. de C.V.

	By:	/s/ ADOLFO CASTRO RIVAS
		Adolfo Castro Rivas
		Chief Executive Officer

Date: October 7, 2026

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