X0407 4 2023-06-15 0 0001671933 Trade Desk, Inc. TTD 0001826731 GRANT JAY R C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 0 1 0 0 Chief Legal Officer 1 Class A Common Stock 2023-06-15 4 S 0 5500 76.21 D 162898 D The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 16, 2023 in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.942 to $76.53, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Kelli Faerber, Attorney-In-Fact for Jay R. Grant 2023-06-16