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 July 2022.

Commission file number: 000-51380

SILICON MOTION TECHNOLOGY CORPORATION

(Translation of registrant’s name into English)

Flat C, 19/F, Wing Cheong Commercial Building

Nos 19-25 Jervois Street

Hong Kong

(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  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

On July 13, 2022, Silicon Motion Technology Corporation (the “Company”) filed a report on Form 6-K to provide a joint proxy statement of the Company and prospectus of MaxLinear, Inc. (“Parent”) relating to the proposed transaction between the Company and Parent (the “Proposed Transaction”) and the extraordinary general meeting of shareholders of the Company in connection thereto to be held on Wednesday, August 31, 2022 at 10:00 a.m. (Taiwan time) (10:00 p.m. Eastern time) at 2F, No.26, Taiyuan Street, Zhubei City, Hsinchu County 302, Taiwan. A sticker supplement which supplements such joint proxy statement of the Company and prospectus of Parent is hereby furnished and a copy is attached to this Form 6-K as Exhibit 99.1.

The information in this Form 6-K (including in Exhibit 99.1) 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.

EXHIBIT INDEX

ADDITIONAL INFORMATION AND WHERE TO FIND IT

This Report of Foreign Private Issuer on Form 6-K is being made in respect of the Proposed Transaction. The Company intends to provide to its securityholders the joint proxy statement of the Company and prospectus of Parent. The joint proxy statement of the Company and prospectus of Parent will be sent or given to the securityholders of the Company and contain important information about the Proposed Transaction and related matters. This communication is not a substitute for the joint proxy statement of the Company and prospectus of Parent or any other document that may be filed or furnished by the Company or Parent with the Securities and Exchange Commission (“SEC”) or provided to the Company’s securityholders. Investors and securityholders are urged to read the joint proxy statement of the Company and prospectus of Parent in its entirety and other relevant documents filed with or furnished to the SEC or provided to the Company’s securityholders in connection with the Proposed Transaction or incorporated by reference therein before making any voting or investment decision with respect to the Proposed Transaction because they contain important information about the Proposed Transaction and the parties to the Proposed Transaction.

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, hereunto duly authorized.

Date: July 19, 2022