[Cheetah Mobile Announces Fourth Quarter and Fiscal Year 2014 Unaudited Financial Results · Mobile monthly active users increased by 138% YoY to 395 million · Mobile revenues up 610% YoY and 97% QoQ in 4Q 2014, accounting for 38% of total revenues. · Overseas revenues accounted for 24% of total 4Q 2014 revenues and 63% of mobile revenues. Beijing, China,] [CHEETAH MOBILE INC. 12/F, Fosun International Center Tower No. 237 Chaoyang North Road Chaoyang District, Beijing 100022 People’s Republic of China Form 20-F x Form 40-F o o o CHEETAH MOBILE INC.]

[Cheetah Mobile Acquires MobPartner for US$58 Million BEIJING, China, MARCH 16, 2015 — Cheetah Mobile Inc. (NYSE: CMCM ) (“Cheetah Mobile” or the “Company”), a leading mobile Internet company that provides mission critical applications to help make the Internet and mobile experience speedier, simpler, and safer for users worldwide, today announced that it has reached a definitive agreement to acquire] [CHEETAH MOBILE INC. 12/F, Fosun International Center Tower No. 237 Chaoyang North Road Chaoyang District, Beijing 100022 People’s Republic of China Form 20-F x Form 40-F o o o CHEETAH MOBILE INC. By :]