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 March 2026

Commission File Number: 001-35224

Xunlei Limited

3709 Baishi Road

Nanshan District, Shenzhen, 518000

The People’s Republic of 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          x        Form 40-F          ¨

Exhibit Index

Exhibit 99.1—Press Release— Xunlei Announces Unaudited Fourth Quarter and Full Year 2025 Financial Results

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.

Xunlei Limited

	By:	/s/ Naijiang (Eric) Zhou
	Name:	Naijiang (Eric) Zhou
	Title:	Chief Financial Officer

Date: March 12, 2026

Xunlei Ltd 6-K