144 0001582090 XXXXXXXX LIVE 0001447669 Twilio Inc. 001-37806 101 Spear Street, Fifth Floor San Francisco CA 94105 415-390-2337 Sachem Head Capital Management LP Director, Affiliate of Director Common Cowen & Company LLC

599 Lexington Ave New York NY 10022

675000 130637745.00 151773860 05/12/2026 NYSE Common 02/21/2024 Open market purchases N/A N 675000 02/21/2024 Cash Y Sachem Head Capital Management LP (SHCM) is the investment manager of certain funds that are selling the shares. Andrew Stafman, partner of SHCM, is a director of the Issuer. The aggregate market value is based on the sale price on 05/12/2026. The number of securities outstanding is as of 04/17/2026. The shares proposed to be sold were acquired and paid for between 02/21/2024 and 03/07/2024. 05/12/2026 /s/ Michael Adamski, as General Counsel