SOUTHEAST AIRPORT GROUP

Acquisition of CPC Aeroportos and Related Financing

On September 1, 2026, our subsidiary Aeropuerto de Cancún completed the Acquisition by acquiring the entire equity interest owned by Motiva Infraestrutura de Mobilidade S.A. (“Motiva”) in CPC Aeroportos. The purchase price for Motiva’s interest was approximately R$5.1 billion (U.S.$992.2 million), following customary closing adjustments. CPC Aeroportos operates and manages, through its investments in concessionaire companies, a portfolio of 20 airports in Latin America, including 17 in Brazil and one in each of Ecuador, Costa Rica and Curaçao. During 2025 and the six-month periods ended June 30, 2025 and 2026, the airports operated and managed by CPC Aeroportos served approximately 48 million, 23 million and 24 million passengers, respectively.

At the September 1, 2026 closing, Aeropuerto de Cancún acquired 100% of the shares of CPC Aeroportos and thereby acquired CPC Aeroportos’ then-existing direct and indirect equity interests in the underlying airport businesses. Certain of those interests are held through intermediate holding companies and certain underlying airport concessionaires continue to have minority shareholders.

In addition to the Acquisition, Aeropuerto de Cancún is pursuing the acquisition of certain additional minority equity interests in underlying airport holding and concessionaire companies. These separate acquisitions were not completed concurrently with the September 1, 2026 Acquisition. Aeropuerto de Cancún has agreed to acquire Zurich Airport International AG’s 25% interest in Sociedade de Participação no Aeroporto de Confins S.A., which is equivalent to an indirect 12.75% interest in Concessionária do Aeroporto Internacional de Confins S.A. This acquisition is expected to close in December 2026, subject to the satisfaction of applicable closing conditions and certain adjustments under the relevant transaction documents. In addition, Infraero has exercised its tag-along right with respect to its 49% interest in Concessionária do Aeroporto Internacional de Confins S.A., and the related acquisition remains subject to the execution of definitive transaction documentation. Separately, Aeropuerto de Cancún is contemplating the acquisition of a 10.2% Curaçao-related minority interest held by Zurich Airport International AG, subject to the negotiation and execution of applicable transaction documentation, the satisfaction of applicable closing conditions and certain adjustments.

On August 14, 2026, Aeropuerto de Cancún, as borrower, and ASUR, as guarantor, entered into a senior unsecured bridge credit facility with original aggregate commitments of U.S.$1,299 million (the “CPC Bridge Facility”). At the closing of the Acquisition, Aeropuerto de Cancún drew U.S.$1,230 million under the CPC Bridge Facility to fund the purchase price and related costs. Approximately U.S.$189 million of the amount drawn is intended to fund the potential acquisitions of the interests held by Zurich Airport International AG and Infraero described above. To the extent such amounts are not used to fund the minority interest acquisitions described above, they will be applied to repay outstanding indebtedness. Effective September 9, 2026, Aeropuerto de Cancún terminated all remaining unused commitments under the CPC Bridge Facility. The CPC Bridge Facility bears interest at the applicable Term SOFR rate plus a variable margin ranging from 125 basis points per annum during the first 90 days to 250 basis points per annum from day 451 through maturity, and matures on November 5, 2027.

CPC Aeroportos Concession Terms

The following table summarizes the principal concession arrangements underlying CPC Aeroportos’ airport portfolio and their current expiration dates.

Acquisition of URW Airports

On December 11, 2025, our subsidiary ASUR US Commercial Airports, LLC completed the acquisition of URW Airports, LLC, now ASUR Airports, LLC. The transaction was announced at an enterprise value of U.S.$295 million, and, as of December 11, 2025, the purchase price was adjusted to U.S.$308 million. Through ASUR Airports, LLC, we operate and manage retail, food and beverage and other commercial concession programs at several U.S. airports, including Terminals 1, 2, 3 and 6, the Tom Bradley International Terminal and the Tom Bradley International Terminal West at Los Angeles International Airport, Terminal 5 at Chicago O’Hare International Airport, and Terminal 8 and New Terminal One at John F. Kennedy International Airport.

On December 5, 2025, Aeropuerto de Cancún and ASUR US Commercial Airports, LLC, as borrowers, and ASUR, as guarantor, entered into a Ps.6,390 million senior unsecured bridge credit facility (the “ASUR US Bridge Facility”) to finance a portion of the purchase price of ASUR Airports, LLC and related transaction costs, fees and expenses. The ASUR US Bridge Facility bears interest at the applicable TIIE de Fondeo rate plus a variable margin ranging from 75 basis points per annum during the first 90 days to 200 basis points per annum from day 451 through maturity, and matures on June 5, 2027. ASUR US Commercial Airports, LLC funded the purchase price with cash on hand and borrowings under the ASUR US Bridge Facility.

ASUR Airports Commercial Program Terms

The current terms of our commercial programs at Los Angeles International Airport extend through June 30, 2038, and the term of our program at ORD Terminal 5 extends through June 8, 2039. The term of our program at JFK New Terminal One extends until ten years after the earlier of (i) the completion date of the final phase constructed by the terminal operator under the applicable lease agreement and (ii) the date set forth in the baseline schedule for completion of Phase B2, an expansion of the terminal that will include additional commercial spaces, but in no event later than October 31, 2039, in each case subject to applicable extension rights. The current term of our program at JFK Terminal 8 extends through December 31, 2036.

Corporate Reorganization Involving ITA

On August 20, 2026, our shareholders approved a corporate reorganization pursuant to which Inversiones y Técnicas Aeroportuarias, S.A.P.I. de C.V. (“ITA”), which was one of our minority shareholders, will merge into ASUR, in order to integrate into ASUR the technical assistance and technology transfer services previously provided by ITA. The transaction involves entities under common control and is expected to result in the issuance of approximately 7.2 million new shares of ASUR’s capital stock. We do not expect the transaction to have a significant impact on our consolidated financial statements.