SEC Form 6-K filed by Amber International Holding Limited

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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 September 2025

Commission File Number: 001-38313

Amber International Holding Limited

(Registrant’s name)

1 Wallich Street, #30-02 Guoco Tower, Singapore 078881
Tel: +65 60220228
(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 ☐

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EXPLANATORY NOTE

On September 10, 2025, Amber International Holding Limited (the “Company”) announced its financial results for the second quarter ended June 30, 2025. The announcement of the Company’s financial results for the second quarter ended June 30, 2025 is furnished as Exhibit 99.3 to this Report on Form 6-K.

Exhibit 99.1 and Exhibit 99.2 to this Report on Form 6-K are hereby incorporated by reference to the Company’s Registration Statements on Form F-3 (File No. 333-288535) (including any prospectuses forming a part of such Registration Statements) and Form S-8 (File No. 333-225568, 333-227747, 333-253596 and 333-288385), as amended or supplemented.

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EXHIBIT INDEX

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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.

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