X0306 4 2021-06-01 0 0001671933 Trade Desk, Inc. TTD 0001670811 Paley Eric B C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 1 0 0 0 Class A Common Stock 2021-06-01 4 S 0 750 600.00 D 13821 D Class A Common Stock 2021-06-01 4 S 0 750 600.00 D 7678 I See Footnote Class A Common Stock 4392 I See Footnote 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. The reported securities are owned directly by the Eric Paley 2015 Remainder Trust (the "2015 Remainder Trust"). The reported securities are owned directly by the Eric Paley 2015 Remainder Trust - GST Exempt Share (the "2015 Remainder Trust-Exempt"). /s/ Alfred Palomino - Attorney-In-Fact for Eric B. Paley 2021-06-03