[JOINT FILING AGREEMENT Matrix Partners China II Hong Kong Limited Matrix Partners China II, L.P. Matrix China Management II, L.P. Matrix China II GP GP, Ltd. Matrix Partners China II, L.P. Matrix China Management II, L.P. Matrix China II GP GP, Ltd. Matrix Partners China II-A, L.P. Matrix China Management II, L.P. Matrix China II GP GP, Ltd. Matrix China] [Mr. Tang Ms. Zhang Gallant Future Commission Original Filing Class A Ordinary Shares Company This statement on Schedule 13D (the “ ** ADSs This CUSIP number applies to the Issuer’s American depositary shares (“ see Notes CUSIP No. 60879B107 13D/A 1. Name of Reporting Persons Matrix Partners China II Hong Kong Limited 2. Check the Appropriate Box if a Member]

[SCHEDULE 13D CUSIP No. 60879B107 Page 2 of 15 1. Names of reporting persons. I.R.S. Identification Nos. of above persons (entities only) SCC GROWTH I HOLDCO A, LTD. I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) 98-1141870 2. Check the appropriate box if a member of a group (see instructions) ¨ x (a) 3. SEC use only 4. Source of]

[August 18, 2016 Special Committee of the Board of Directors Momo Inc. (the “Company”) 20th Floor, Block B Tower 2, Wangjing SOHO No.1 Futongdong Street Chaoyang District, Beijing 100102 People’s Republic of China Dear Sirs: Reference is made to the letter dated June 23, 2015 from Mr. Yan Tang (“Mr. Tang”), co-founder, chairman and chief executive officer of the Company,] [Execution Version TERMINATION AGREEMENT Termination Agreement Alibaba Yunfeng Party Parties This TERMINATION AGREEMENT (this “ RECITALS Consortium Agreement WHEREAS, the Parties desire to terminate the Consortium Agreement in its entirety on the date hereof. NOW, THEREFORE, the Parties agree as follows: Termination of the Consortium Agreement Exclusivity 1. Governing Law 2. No Modification 3. Counterparts; Entire Agreement 4. Successors 5.] []

[August 18, 2016 Special Committee of the Board of Directors Dear Sirs: Reference is made to the letter dated June 23, 2015 from Mr. Yan Tang (“Mr. Tang”), co-founder, chairman and chief executive officer of the Company, Matrix Partners China II Hong Kong Limited (“Matrix”), Sequoia Capital China Investment Management L.P. (“Sequoia”) and Huatai Ruilian Fund Management Co., Ltd. (“Huatai] [Execution Version TERMINATION AGREEMENT Termination Agreement Alibaba Yunfeng Party Parties This TERMINATION AGREEMENT (this “ RECITALS Consortium Agreement WHEREAS, the Parties desire to terminate the Consortium Agreement in its entirety on the date hereof. NOW, THEREFORE, the Parties agree as follows: Termination of the Consortium Agreement Exclusivity 1. Governing Law 2. No Modification 3. Counterparts; Entire Agreement 4. and understanding] [SCHEDULE 13D MOMO INC. (Name of Issuer) CLASS A ORDINARY SHARES, par value $0.0001 per share (Title of Class of Securities) 60879B107** (CUSIP Number) Timothy A. Steinert, Esq. Alibaba Group Holding Limited c/o Alibaba Group Services Limited 26/F Tower One, Times Square 1 Matheson Street, Causeway Bay Hong Kong Tel: +852.2215.5100 With a copy to: Kathryn King Sudol, Esq. Simpson]