Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018. OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to OR ☐ SHELL COMPANY REPORT PURSUANT TO SEC ...

Cheetah Mobile Inc (NYSE:CMCM) Q4 2018 Results Earnings Conference Call March 25, 2019 8:00 AM ET Company Participants Helen Zhu - IR Director Fu Sheng - Chairman and CEO Vincent Jiang - CFO Conference Call Participants Frank Chen - Macquarie Robert Cowell - 86 Research Carson Lo - Nomura Hillman Chan - Citigroup Operator Good evening and welcome to the Cheetah Mobile Fourth Quarter and Full Year 2018 Earnings Conference Call. All participants will be in a listen-only mode. (Operator Instructions) After to ...