6-K

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 June 2025

Commission File Number: 001-41754

SHARKNINJA, INC. (Translation of registrant’s name into English)

89 A Street Needham, MA 02494 (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 June 20, 2025, SharkNinja, Inc. (the “Company”) held its 2025 Annual General Meeting of Shareholders (the “Annual Meeting”) at 89 A St. Needham, MA 02494 and virtually at: www.virtualshareholdermeeting.com/SN2025. On April 28, 2025 (the “Record Date”), the record date for the Annual Meeting, there were 141,041,197 of the Company’s Ordinary Shares issued and outstanding and entitled to vote at the Annual Meeting. 119,722,726 Ordinary Shares, which represented 84.88% of the votes of the issued and outstanding Ordinary Shares, were present, in person, virtually, or by proxy, at the Annual Meeting. Two items of business were acted upon by the Company’s shareholders at the Annual Meeting, each of which was approved by the shareholders.

1. Shareholders re-appointed all of the seven nominees for directors, in each case to hold office in accordance with the Company’s Amended and Restated Memorandum and Articles of Association. The voting results were as follows:

2. Shareholders ratified the appointment of Ernst & Young LLP as the independent registered accounting firm of the Company for the fiscal year ending December 31, 2025. The voting results were as follows:

SIGNATURE

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.