X0609 4 2026-10-19 0 0001671933 Trade Desk, Inc. TTD 0001826731 GRANT JAY R false C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 0 1 0 0 Chief Legal Officer 0 Employee Stock Option (Right to Buy) 59.57 2026-10-19 4 D 0 15512 D 2032-04-26 Class A Common Stock 15512 1678 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 15512 A 2032-04-26 Class A Common Stock 15512 15512 D Employee Stock Option (Right to Buy) 61.46 2026-10-19 4 D 0 55317 D 2033-04-24 Class A Common Stock 55317 1627 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 55317 A 2033-04-24 Class A Common Stock 55317 55317 D Employee Stock Option (Right to Buy) 81.07 2026-10-19 4 D 0 120451 D 2034-04-23 Class A Common Stock 120451 1233 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 120451 A 2034-04-23 Class A Common Stock 120451 120451 D Employee Stock Option (Right to Buy) 49.24 2026-10-19 4 D 0 157515 D 2035-04-15 Class A Common Stock 157515 0 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 157515 A 2035-04-15 Class A Common Stock 157515 157515 D Employee Stock Option (Right to Buy) 25 2026-10-19 4 D 0 309551 D 2036-03-03 Class A Common Stock 309551 0 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 309551 A 2036-03-03 Class A Common Stock 309551 309551 D The option is fully vested and exercisable. The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") under the Issuer's 2025 Incentive Award Plan effective on October 19, 2026 (the "Repricing Date"). Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $12.26 per share, the closing price of the Issuer's Class A Common Stock on the Repricing Date. There is no change to the number of shares, the expiration dates or the vesting schedule of the repriced options. The Option Repricing was approved by the Issuer's stockholders on October 19, 2026. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through April 19, 2027, except for a termination by the Issuer without cause. This amount represents the Incentive Stock Option (ISO) portion of the grant on April 26, 2022, that was not eligible to participate in the Option Repricing. The option was granted on April 24, 2023, the Vesting Commencement Date ("VCD"). One forty-eighth (1/48th) of the shares subject to the option vest on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. This amount represents the ISO portion of the grant on April 24, 2023, that was not eligible to participate in the Option Repricing. The option was granted on April 23, 2024, the VCD. One forty-eighth (1/48th) of the shares subject to the option vest on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. This amount represents the ISO portion of the grant on April 23, 2024, that was not eligible to participate in the Option Repricing. The option was granted on April 15, 2025, the VCD. One forty-eighth (1/48th) of the shares subject to the option vest on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. The option was granted on March 3, 2026, the VCD. One forty-eighth (1/48th) of the shares subject to the option vest on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. /s/ Kelli Faerber, Attorney-in-Fact for Jay R. Grant 2026-10-21