For the quarterly period ended March 31, 2026 For the transition period from to TWILIO INC.(Exact name of registrant as specified in its charter)_____________________________________________ 26-2574840 (I.R.S. Employer Identification No.) (State or other jurisdiction of incorporation or organization) 101 Spear Street, Fifth FloorSan Francisco, California 94105(Address of principal executive offices) (Zip Code)(415) 390-2337(Registrant’s telephone number, including area code)____________________________________________ Securities registered pursuant to Section 12(b) of the Act: As of April17, 2026, 151,773,860 shares of the registrant’s ClassA common stock were outstanding. Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d)of the Securities Exchange Act of 1934 during thepreceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule12b-2 of theExchange Act. If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revisedfinancial accounting standards provided pursuant to Section13(a)of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act). Yes☐No☒ TWILIO INC.Quarterly Report on Form10-QFor the Three Months Ended March 31, 2026TABLE OF CONTENTS PART I - FINANCIAL INFORMATION Item1.Financial Statements (unaudited)3Condensed Consolidated Balance Sheets as ofMarch 31, 2026and December 31, 20253Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2026 and 20254Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2026 and 2025 5Condensed Consolidated Statements of Stockholders’ Equity for the Three Months Ended March 31, 2026 and 20256Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2026 and 20258Notes to Condensed Consolidated Financial Statements9Item2.Management’s Discussion and Analysis of Financial Condition and Results of Operations21Item3.Quantitative and Qualitative Disclosures About Market Risk33Item4.Controls and Procedures34PART II - OTHER INFORMATIONItem 1.Legal Proceedings35Item 1A.Risk Factors35Item 2.Unregistered Sales of Equity Securities and Use of Proceeds65Item 5.Other Information65Item6.Exhibits66Signatures66 PART I - FINANCIAL INFORMATION TWILIOINC.Condensed Consolidated Balance Sheets(Unaudited) TWILIOINC.Condensed Consolidated Statements of Operations(Unaudited) TWILIOINC.Condensed Consolidated Statements of Comprehensive Income(Unaudited) Three Months EndedMarch 31, TWILIOINC.Condensed Consolidated Statements of Cash Flows(Unaudited) TWILIOINC.Notes to Condensed Consolidated Financial Statements(Unaudited) 1. Organization and Description of Business TwilioInc. (the “Company”) was incorporated in the state of Delaware on March13, 2008. Today's leading companies trust Twilio'sCustomer Engagement Platform to build direct, personalized relationships with their customers everywhere in the world. Twilio enablescompanies to use communications and data to add intelligence and security to every step of their customers’ journey, from sales tomarketing to growth, customer service and many more engagement use cases in a flexible, programmatic way. The Company’s headquarters are located in San Francisco, California, and the Company has subsidiaries across North America,South America, Europe, Asia and Australia. 2. Summary of Significant Accounting Policies (a)Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally acceptedaccounting principles in the United States of America (“U.S. GAAP”) and applicable rulesand regulations of the Securities and ExchangeCommission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financialstatements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rulesand regulations. Therefore, theseunaudited condensed consolidated financial statements should be read in conjunction with the cons