X0306 4 2016-12-15 0001447669 TWILIO INC TWLO 0001665731 Kirkpatrick Lee C/O TWILIO INC. 375 BEALE STREET, SUITE 300 SAN FRANCISCO CA 94105 1 Chief Financial Officer Class B Common Stock 2016-12-15 4 F 0 3805 0 D Class A Common Stock 3805 90955 D Employee Stock Option (right to buy) 1.24 2016-12-16 4 M 0 25000 0 D 2022-05-16 Class B Common Stock 25000 516525 D Class B Common Stock 2016-12-16 4 M 0 25000 0 A Class A Common Stock 25000 115955 D Employee Stock Option (right to buy) 10.09 2025-12-30 Class B Common Stock 175000 175000 D Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and has no expiration date. 25% of the shares subject to this option vested on May 7, 2013, and the remaining shares subject to this option vest in 36 equal monthly installments thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date. The option is early exercisable by the Reporting Person. The shares subject to this option vest in 34 equal monthly installments, with the first installment on May 7, 2012. The option is early exercisable by the Reporting Person. /s/ Alexis Rhorer as attorney in fact for Reporting Person 2016-12-19