SOUTHEAST AIRPORT GROUP

Our subsidiaries are parties to the Mexican airport concessions granted by the Ministry of Infrastructure, Communications and Transportation under which we are required to construct, operate, maintain and develop the airports in exchange for certain benefits. See “—Mexican Sources of Regulation” and “—Scope of Concessions and General Obligations of Concession Holders” under “Item 4. Information on the Company—Mexican Regulatory Framework.”

We have entered into a technical assistance agreement with ITA providing for management and consulting services. See “Item 7. Major Shareholders and Related Party Transactions—Related Party Transactions—Arrangements with ITA.”

We, through our Cancún subsidiary, have entered into a series of agreements with the shareholders of Airplan and Oriente, entities that hold concessions to operate several airports in Colombia. In October 2017, we received the necessary approvals from the Colombian regulatory authorities to conclude the acquisition of the stake in Airplan. We terminated our agreement to purchase Oriente in 2018.

On July 30, 2025, we through our subsidiary ASUR US Commercial Airports, LLC entered into a purchase agreement with Unibail-Rodamco-Westfield’s wholly-owned subsidiary Westfield Development, Inc. to acquire all of the issued and outstanding equity interest of URW Airports, LLC for an enterprise value of US$295 million. The acquired business manages select commercial programs at several U.S. airports, including Terminals 1, 2, 3, 6, Tom Bradley International Terminal and Tom Bradley International Terminal West at LAX, Terminal 5 at ORD, and Terminal 8 and New Terminal One at JFK. Further, on November 18, 2025, we through our subsidiary Aeropuerto de Cancún entered into a purchase agreement with Motiva Infraestrutura de Mobilidade S.A. to acquire up to 100% of the shares representing the capital stock of Companhia de Participações em Concessões (CPC Aeroportos), for approximately US$936 million. CPC Aeroportos is an operator of 20 airports in Latin America, including 17 in Brazil, one in Costa Rica, one in Ecuador and one in Curaçao, and is a wholly-owned subsidiary of Motiva de Infraestructura de Mobilidade, S.A. See “—Recent Developments” under “Item 5. Operating and Financial Review and Prospects.”

We, through our subsidiary Airplan, are subject to the Colombian airport concession agreement granted by Aerocivil and the Olaya Herrera Airport Public Authority, under which we are required to perform the administration, operation, commercial development, remodeling, maintenance and modernization the airports in exchange for certain benefits. See “—Scope of Colombian Concessions and General Obligations” under “Item 4. Information on the Company—Colombian Regulatory Framework.”

We, through our subsidiary Aerostar, are subject to the LMM Lease granted by the PRPA, under which we are required to operate, manage, maintain, improve, enhance, develop and rehabilitate the LMM Airport to provide general, ancillary and complementary airport services to members of the general public in exchange for certain benefits. See “—Scope of LMM Lease and General Obligations of Aerostar” under “Item 4. Information on the Company—Puerto Rican Regulatory Framework.”