Form 6-K Birkenstock Holding plc For: Dec 18

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 December 2025

Commission File Number 001-41836

Birkenstock Holding plc

(Translation of registrant’s name into English)

1-2 Berkeley Square

London W1J 6EA

United Kingdom
(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

On December 18, 2025, Birkenstock Holding plc issued a press release reporting its fiscal year 2025 (ended September 30, 2025) financial results. A copy of the press release is furnished as Exhibit 99.1 to this Report on Form 6-K and incorporated by reference herein.

The information in this Report on Form 6-K (including Exhibit 99.1 hereto) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Exhibit Index

SIGNATURES

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.