Trade Desk (TTD)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-14 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Trade Desk, Inc. (TTD) CIK: 0001671933 --- Reporting Owner --- Name: Olmstead Nathan CIK: 0001776828 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-09-14 | Code: A (Grant or award) Shares: +398,262 | Price: $0.00 Shares Owned After: 644,324 | Ownership: D (Direct) Footnotes: [F1] Represents a restricted stock award with a Vesting Commencement Date of September 14, 2026. One-sixteenth (1/16th) of the granted shares vest on November 15, 2026 and the remainder of the granted shares vest ratably over 15 quarters on each quarterly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. --- Footnotes (Complete Index) --- F1: Represents a restricted stock award with a Vesting Commencement Date of September 14, 2026. One-sixteenth (1/16th) of the granted shares vest on November 15, 2026 and the remainder of the granted shares vest ratably over 15 quarters on each quarterly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. --- Signature --- /s/ /s/ Kelli Faerber, Attorney-in-Fact for Nathan Olmstead (2026-09-14)