MOMO [Momo] SC 13G: 13 G CUSIP No. 60879B107 Page 20 of
[13 G CUSIP No. 60879B107 Page 20 of 22 Pages AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G Dated: February 12, 2015 SCC Growth I Holdco A, Ltd. Sequoia Capital China Growth Fund I, L.P. Sequoia Capital China Growth Partners Fund I, L.P. Sequoia Capital China GF Principals Fund I, L.P. its Members Sequoia Capital China Growth Fund Management I,] [13 G CUSIP No. 60879B107 Page 2 of 22 Pages 1 Name of reporting person SCC GROWTH I HOLDCO A, LTD. (SCCG I HOLDCO A) I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) 98-1141870 2 Check the appropriate box if a member of a group ¨ ¨ (a) 3 SEC use only 4 Citizenship or place of organization CAYMAN ISLANDS]