X0306 4 2021-05-15 0 0001671933 Trade Desk, Inc. TTD 0001671445 Green Jeffrey Terry C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 1 1 1 0 President and CEO Class A Common Stock 2021-05-15 4 F 0 668 517.49 D 71202 D Class A Common Stock 12000 I See Footnote The shares were withheld at the election of the Reporting Person to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted May 15, 2020. Represents securities held by the Jeff T.Green Family Foundation "Foundation"). Mr. Green is the sole member and director of the Foundation and has investment and voting control over the shares held by the Foundation, and may be deemed to indirectly beneficially own the shares held by the Foundation. /s/ Alfred Palomino, Attorney-in-Fact for Jeffrey Terry Green 2021-05-18