X0306 4 2019-11-01 0 0001671933 Trade Desk, Inc. TTD 0001755875 VOBEJDA SUSAN C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT ST. VENTURA CA 93001 0 1 0 0 Chief Marketing Officer Class A Common Stock 2019-11-01 4 F 0 1996 203.10 D 34833 D Class A Common Stock 2019-11-05 4 S 0 1754 203.59 D 33079 D The shares were withheld at the election of the Reporting Person to satisfy tax withholding obligations in connection with the partial vesting of restricted stock units granted on November 1, 2017. The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. /s/ Vivian Yang, Attorney-in-Fact for Susan Vobejda 2019-11-05