6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________

FORM 6-K

___________________________

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO

SECTION 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number: 001-41912

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Ferrovial SE

___________________________

Gustav Mahlerplein 61-63

Symphony Towers, 14th Floor

1082 MS Amsterdam

The Netherlands

Tel: +31 20798 37 02

(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 ☐

EXPLANATORY NOTE

Ferrovial SE (the “Company”) is filing this current report on Form 6-K to report the transactions carried out by the

Company from November 24, 2025 to December 12, 2025 under the share buyback program, which started in June

2, 2025 and finished in December 12, 2025.

Attached to this current report on Form 6-K is:

1. a press release dated December 2, 2025 as Exhibit 99.1

2. a press release dated December 15, 2025 as Exhibit 99.2

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant

has duly caused this report to be signed on its behalf by the undersigned, thereunto duly

authorized.

Ferrovial SE

Date: December 30, 2025

By: /s/ Ernesto López Mozo

Ernesto López Mozo

Chief Financial Officer

ferr-buybackprogram24_11

1/1 FERROVIAL SE (“FERROVIAL” OR THE “COMPANY”) ANNOUNCES TRANSACTIONS UNDER THE SHARE BUYBACK PROGRAM Amsterdam, 2 December 2025 Ferrovial (Ticker: “FER”) refers to the announcement disclosed to the market on 14 March 2025, regarding the implementation of a buyback program for its own shares (the “Program”), starting on 2 June 2025. The Company reports that, during the period between 24 and 28 November 2025, it has carried out the following transactions under the Program. Date Security Trading venue Number of shares purchased Weighted Average Price (€) 24/11/2025 FER US trading venues 30,000 56.12 25/11/2025 FER US trading venues 30,000 56.27 26/11/2025 FER US trading venues 30,000 56.69 27/11/2025 FER XMAD 30,000 56.70 28/11/2025 FER US trading venues 30,000 56.69 Total 150,000 56.50 Detailed information on the individual shares purchase transactions carried out in the above- mentioned period can be found at www.ferrovial.com/en/ir-shareholders/financial- information/inside-information-and-other-relevant-information/ferrovial-se-share-buy-back- program-transactions/. Within the framework of the Program, since its beginning up to and including 28 November 2025, the Company has repurchased a total of 3,900,000 shares for a total amount of 190,025,425.65 euro. Note: The Bloomberg closing EUR-USD exchange rate has been applied to determine the EUR countervalue of USD transactions. About Ferrovial Ferrovial is one of the world’s leading infrastructure companies. The Company operates in more than 15 countries and has a workforce of over 25,000 worldwide. Ferrovial is triple listed on Euronext Amsterdam, the Spanish Stock Exchanges and Nasdaq and is a member of Spain’s blue-chip IBEX 35 index. It is also included in globally recognized sustainability indices such as the Dow Jones Best in Class Index (former Dow Jones Sustainability Index) and strives to conduct its operations in compliance with the principles of the UN Global Compact, which the Company adopted in 2002.

ferr-buybackprogram08_12

1/1 FERROVIAL SE (“FERROVIAL” OR THE “COMPANY”) ANNOUNCES THE LAST TRANSACTIONS UNDER THE SHARE BUYBACK PROGRAM TERMINATED ON 12 DECEMBER 2025 Amsterdam, 15 December 2025 Ferrovial (Ticker: “FER”) refers to (i) the announcement disclosed to the market on 14 March 2025, regarding the implementation of a buyback program for its own shares (the “Program”), starting on 2 June 2025; (ii) the announcement disclosed to the market on 12 December 2025, regarding the termination of the Program. The Company reports that, during the period between 8 and 12 December 2025, it has carried out the following transactions under the Program. Date Security Trading venue Number of shares purchased Weighted Average Price (€) 2025/12/08 FER US trading venues 60,000 57.37 2025/12/09 FER US trading venues 60,000 57.46 2025/12/10 FER US trading venues 60,000 56.74 2025/12/11 FER US trading venues 60,000 56.61 2025/12/12 FER US trading venues 60,000 56.8 Total 300,000 56.95 Detailed information on the individual shares purchase transactions carried out in the above- mentioned period can be found at www.ferrovial.com/en/ir-shareholders/financial- information/inside-information-and-other-relevant-information/ferrovial-se-share-buy-back- program-transactions/. As previously announced, the Program ended on 12 December 2025. Under the Program, the Company acquired a total of 4,200,000 treasury shares for a total amount of EUR 206,850,155.05, representing approximately 0.5724% of Ferrovial’s issued share capital at the date thereof. Note: The Bloomberg closing EUR-USD exchange rate has been applied to determine the EUR countervalue of USD transactions. About Ferrovial Ferrovial is one of the world’s leading infrastructure companies. The Company operates in more than 15 countries and has a workforce of over 25,000 worldwide. Ferrovial is triple listed on Euronext Amsterdam, the Spanish Stock Exchanges and Nasdaq and is a member of Spain’s blue-chip IBEX 35 index. It is also included in globally recognized sustainability indices such as the Dow Jones Best in Class Index (former Dow Jones Sustainability Index) and strives to conduct its operations in compliance with the principles of the UN Global Compact, which the Company adopted in 2002.