X0609 4 2026-06-01 0 0001447669 TWILIO INC TWLO 0001284038 ROTTENBERG ERIKA false 101 SPEAR STREET, FIFTH FLOOR SAN FRANCISCO CA 94105 1 0 0 0 1 Class A Common Stock 2026-06-01 4 S 0 2000 199.0075 D 30995 I By Trust The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 12/10/2025. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.00 to $199.075 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 sold at each separate price within the range set forth in this footnote. Shares are held by The Erika Rottenberg Revocable Trust. /s/ Juliana Chen as attorney-in-fact for Reporting Person 2026-06-03