X0306 4 2017-05-11 0001447669 TWILIO INC TWLO 0001420733 McGeever James C/O TWILIO INC. 375 BEALE STREET, SUITE 300 SAN FRANCISCO CA 94105 1 Class A Common Stock 2017-05-11 4 P 0 10000 23.192 A 10000 I By The James and Linda McGeever Revocable Trust The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.15 to $23.24 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The James and Linda McGeever Revocable Trust dated 5/6/2008, James McGeever and Linda McGeever Trustees. /s/ Mariam Sattar as attorney in fact for Reporting Person 2017-05-11