X0206 3 2019-02-01 1 0001447669 TWILIO INC TWLO 0001508900 Bessemer Venture Partners VIII L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 0 0 0001508902 Bessemer Venture Partners VIII Institutional L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 0 0 0001559306 Deer VIII & Co. L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 0 0 0001559311 Deer VIII & Co. Ltd. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 0 0 Byron Deeter is a director of Twilio Inc. ("Twilio"). Mr. Deeter also is a director of Deer VII & Co. Ltd. ("Deer VII Ltd."), which is the general partner of Deer VII & Co. L.P. ("Deer VII L.P."), which is the general partner of Bessemer Venture Partners VII Institutional L.P. ("BVP VII Inst"), BVP VII Special Opportunity Fund L.P. ("BVP VII SOF") and Bessemer Venture Partners VII L.P. ("BVP VII"). Each of BVP VII Inst, BVP VII SOF, BVP VII and 15 Angels LLC, a wholly-owned subsidiary of BVP VII Inst (collectively, the "BVP VII Funds" and, together with Deer VII Ltd. and Deer VII L.P., the "BVP VII Entities"), beneficially owns shares of Twilio's Class B Common Stock. Mr. Deeter also is a director of Deer VIII & Co. Ltd. ("Deer VIII Ltd."), which is the general partner of Deer VIII & Co. L.P. ("Deer VIII L.P."), which is the general partner of Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst") and Bessemer Venture Partners VIII L.P. ("BVP VIII" and, together with BVP VIII Inst, Deer VIII Ltd. and Deer VIII L.P., the "BVP VIII Entities"). BVP VIII Inst and BVP VIII each received shares of Class A Common Stock of Twilio as a result of the conversion of Common Stock of SendGrid, Inc. ("SendGrid") pursuant to the Agreement and Plan of Merger and Reorganization, dated October 15, 2018, by and between Twilio, SendGrid and Topaz Merger Subsidiary, Inc., as amended on December 13, 2018. Mr. Deeter serves as a representative of the BVP VII Entities and the BVP VIII Entities on the Board of Directors of Twilio. /s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P., the General Partner of Bessemer Venture Partners VIII L.P. 2019-02-01 /s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd. 2019-02-01 /s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P. 2019-02-01 /s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P., the General Partner of Bessemer Venture Partners VIII Institutional L.P. 2019-02-01