Cheetah Mobile (CMCM) 6-K Cheetah Mobile Announces Fourth Quarter and Fiscal Year 2017

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE13a-16 OR15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2018

Commission File Number:001-36427

CHEETAH MOBILE INC.

Building No. 8

Hui Tong Times Square

Yaojiayuan South Road

Beijing 100123

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 Form20-F or Form40-F.

Form20-F  ☒            Form40-F  ☐

Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(7):  ☐

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.

CHEETAH MOBILE INC.
By:	/s/ Vincent Zhenyu Jiang
Name:	Vincent Zhenyu Jiang
Title:	Chief Financial Officer

Date: March 23, 2018

Exhibit Index

Exhibit 99.1 — Press release