X0306 4/A 2022-02-15 2022-02-17 0 0001671933 Trade Desk, Inc. TTD 0001671685 Pickles David Randall C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 1 1 0 0 Chief Technology Officer Class A Common Stock 2022-02-15 4 F 0 1206 80.52 D 452434 D Class A Common Stock 2022-02-15 4 F 0 772 80.52 D 451662 D On February 17, 2022, the Reporting Person filed a Form 4 which inadvertently reported that he had 1,223 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 May 15, 2020. In fact, as reported in this amendment, the Reporting Person had 1,206 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 May 15, 2020. On February 17, 2022, the Reporting Person filed a Form 4 which inadvertently reported that he had 828 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/ Tahnil Davis, Attorney-in-Fact for David R. Pickles 2022-02-23