X0306 4/A 2022-02-15 2022-02-17 0 0001671933 Trade Desk, Inc. TTD 0001783262 Hulst Michelle C/O THE TRADE DESK INC. 42 N. CHESTNUT STREET VENTURA CA 93001 0 1 0 0 Chief Data Officer Class A Common Stock 2022-02-15 4 F 0 583 80.52 D 55895 D Class A Common Stock 2022-02-15 4 F 0 772 80.52 D 55123 D On February 17, 2022, the Reporting Person filed a Form 4 which inadvertently reported that she had 600 shares of Issuer's Class A common stock withheld to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted July 29, 2020. In fact, as reported in this amendment, the Reporting Person had 583 shares of the Issuer's Class A common stock withheld to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted July 29, 2020. On February 17, 2022, the Reporting Person filed a Form 4 which inadvertently reported that she had 827 shares of Issuer's Class A common stock withheld to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted April 28, 2021. In fact, as reported in this amendment, the Reporting Person had 772 shares of the Issuer's Class A common stock withheld to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted April 28, 2021. /s/ Kelli Faerber, Attorney-in-Fact for Michelle Hulst 2022-02-23