X0306 4 2021-11-15 0 0001671933 Trade Desk, Inc. TTD 0001671445 Green Jeffrey Terry C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 1 1 1 0 President and CEO Class A Common Stock 2021-11-15 4 F 0 6674 105.45 D 698672 D Class A Common Stock 2021-11-15 4 M 0 26730 3.317 A 725402 D Class A Common Stock 2021-11-15 4 M 0 17300 5.28 A 742702 D Class A Common Stock 2021-11-15 5 G 0 E 44030 0.00 D 698672 D Class A Common Stock 2021-11-15 5 G 0 E 44030 0.00 A 44030 I See Footnote Class A Common Stock 111320 I See Footnote Employee Stock Option (Right to Buy) 3.317 2021-11-15 4 M 0 26730 0.00 D 2021-12-22 Class A Common Stock 26730 0 D Employee Stock Option (Right to Buy) 5.28 2021-11-15 4 M 0 17300 0.00 D 2022-12-01 Class A Common Stock 17300 3530 D The shares were withheld at the election of the Reporting Person to satisfy tax withholding obligations in connection with the partial vesting of a restricted stock award granted May 15, 2020. Represents a transfer of shares from the Reporting Person to a trust held by the Reporting Person. Represents securities held by the Jeff Green Trust (the "Trust"). Mr. Green is a Trustee of the Trust and has investment and voting control over the shares held by the Trust, and may be deemed to indirectly beneficially own the shares held by the Trust. Represents securities held by the Jeff T.Green Family Foundation ("Foundation"). Mr. Green is the sole member and director of the Foundation and has investment and voting control over the shares held by the Foundation, and may be deemed to indirectly beneficially own the shares held by the Foundation. This option was previously reported as covering 2,673 shares at an exercise price of $33.17 per share, but was adjusted to reflect a 10-for-1 stock split effective June 16, 2021. The option was granted on December 23, 2016. The Vesting Commencement Date ("VCD") was December 1, 2016. The option vested over four years in increments on each monthly anniversary of the VCD according to the following schedule: an aggregate of 20,420 shares vested during each of the calendar years 2017, 2018 and 2019 and an aggregate of 32,070 shares vested during calendar year 2020, in each case, subject to continued employment with the Issuer through the applicable vesting date. This option was previously reported as covering 2,083 shares at an exercise price of $52.80 per share, but was adjusted to reflect a 10-for-1 stock split effective June 16, 2021. The option was granted on December 1, 2017, with a VCD of December 1, 2020. The option vests over one year in increments on each monthly anniversary of the VCD according to the following schedule: an aggregate of 20,830 shares will vest during calendar year 2021, subject to continued employment with the Issuer through the applicable vesting dates. /s/ Tahnil Davis, Attorney-in-Fact for Jeffrey Terry Green 2021-11-17