X0306 4 2021-08-15 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 2021-08-15 4 F 0 6674 80.91 D 705346 D Class A Common Stock 2021-05-27 5 G 0 E 8680 0.00 D 111320 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. On June 16, 2021, the Issuer effected a 10-for-1 stock split of its common stock resulting in the reporting person's ownership of 640,818 additional shares of common stock. Bona fide gift not for value of Class A Common Stock to a charity. On June 16, 2021, the Issuer effected a 10-for-1 stock split ("Stock Split") of its common stock resulting in the reporting person's ownership of 100,188 additional shares of common stock. All transactions presented prior to the effective date of the Stock Split have been retroactively adjusted to reflect the impact of the Stock Split. 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 2021-08-17