TWILIO INC (TWLO) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-15 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TWILIO INC (TWLO) CIK: 0001447669 --- Reporting Owner --- Name: Viggiano Aidan CIK: 0001965469 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-05-15 | Code: S (Open market sale) Shares: -476 | Price: $196.76 Total Value: $93,659.62 Shares Owned After: 129,865 | Ownership: D (Direct) Footnotes: [F1] Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person. [F2] The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.50 to $197.4390 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. [F3] A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock. [Transaction #2] Security: Class A Common Stock Date: 2026-05-15 | Code: S (Open market sale) Shares: -900 | Price: $197.80 Total Value: $178,016.49 Shares Owned After: 129,173 | Ownership: D (Direct) Footnotes: [F1] Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person. [F4] The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.79 to $197.825 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. [F3] A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock. [F5] Includes 208 shares acquired by the Reporting Person pursuant to the Issuer's 2016 Employee Stock Purchase Plan on May 15, 2026. --- Footnotes (Complete Index) --- F1: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person. F2: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.50 to $197.4390 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. F3: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock. F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.79 to $197.825 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. F5: Includes 208 shares acquired by the Reporting Person pursuant to the Issuer's 2016 Employee Stock Purchase Plan on May 15, 2026. --- Signature --- /s/ /s/ Juliana Chen as attorney-in-fact for Reporting Person (2026-05-19)