X0609 4 2026-10-19 0 0001671933 Trade Desk, Inc. TTD 0001776828 Olmstead Nathan false C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 0 1 0 0 Chief Financial Officer 0 Employee Stock Option (Right to Buy) 19.75 2026-10-19 4 D 0 439753 D 2036-07-09 Class A Common Stock 439753 0 D Employee Stock Option (Right to Buy) 12.26 2026-10-19 4 A 0 439753 A 2036-07-09 Class A Common Stock 439753 439753 D The option was granted on July 9, 2026, the Vesting Commencement Date ("VCD"). One-fourth (1/4th) of the shares subject to the option vest on the first anniversary of the VCD, with one forty-eighth (1/48th) of the shares subject to the option vesting on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates. 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. /s/ Kelli Faerber, Attorney-in-Fact for Nathan Olmstead 2026-10-21