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 August 2026

Commission File Number: 001-38208

Metalpha Technology Holding Limited

Suite 5506-07, Central Plaza

18 Harbour Road, Wan Chai,

Hong Kong, China

(Address of Principal Executive Offices)

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 ☐

INCORPORATION BY REFERENCE

This current report on Form 6-K shall be deemed to be incorporated by reference into the Metalpha Technology Holding Limited’s registration statements on Form S-8 (File No. 333-255251 and File No. 333-283335) and F-3 (File No. 333-297098), and to be a part thereof from the date on which this current report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

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.

Date: August 6, 2026