X0609 4 2026-07-09 0 0001671933 Trade Desk, Inc. TTD 0001534034 Price Penry W false C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT STREET VENTURA CA 93001 1 0 0 0 0 Stock Option (Right to Buy) 19.75 2026-07-09 4 A 0 25505 0 A 2036-07-09 Class A Common Stock 25505 25505 D Stock Option (Right to Buy) 19.75 2026-07-09 4 A 0 20893 0 A 2036-07-09 Class A Common Stock 20893 20893 D Stock Option (Right to Buy) 19.75 2026-07-09 4 A 0 3602 11.37 A 2036-07-09 Class A Common Stock 3602 3602 D Stock Option (Right to Buy) 19.75 2026-07-09 4 A 0 3602 11.37 A 2036-07-09 Class A Common Stock 3602 3602 D Stock Option (Right to Buy) 19.75 2026-07-09 4 A 0 900 11.37 A 2036-07-09 Class A Common Stock 900 900 D Grant of option to purchase Class A Common Stock under the Issuer's 2025 Incentive Award Plan. The shares subject to the option vest in quarterly installments over the three-year period following the grant, subject to the Reporting Person's continuous service as a board member through such date. This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an initial director equity grant. Grant of option to purchase Class A Common Stock under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 1,816 shares vesting August 4, 2026, 6,429 shares vesting November 4, 2026, 6,429 shares vesting February 4, 2027 and 6,219 shares vesting May 4, 2027 or, if earlier for each installment, the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting provided all then unvested shares shall vest in full on the date of the Issuer's next annual meeting of stockholders, all subject to the Reporting Person's continuous service as a member of the board of directors immediately prior to such date. This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant, prorated from the date the Reporting Person became a non-employee director and the one-year anniversary of the Issuer's last annual meeting of stockholders. Grant of option to purchase Class A Common Stock under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 313 shares vesting August 4, 2026, 1,108 shares vesting November 4, 2026, 1,108 shares vesting February 4, 2027 and 1,073 shares vesting May 4, 2027 or, if earlier for each installment, the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting provided all then unvested shares shall vest in full on the date of the Issuer's next annual meeting of stockholders, all subject to the Reporting Person's continuous service as a member of the board of directors immediately prior to such date. This price represents the Black-Scholes value of an option using the average closing stock price for a share of the Issuer's Class A Common Stock for forty-five consecutive trading days ending on, and including, the grant date. This price was used to calculate the number of shares subject to the option granted. These stock options were issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer and meeting fees of $50,000, prorated from the date the Reporting Person became a non-employee director to the date of the Issuer's next annual meeting of stockholders. Grant of option to purchase Class A Common Stock under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 313 shares vesting August 4, 2026, 1,108 shares vesting November 4, 2026, 1,108 shares vesting February 4, 2027 and 1,073 shares vesting May 4, 2027 or, if earlier for each installment, the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting provided all then unvested shares shall vest in full on the date of the Issuer's next annual meeting of stockholders, all subject to the Reporting Person's continuous service as a member of the compensation committee of the board of directors immediately prior to such date. Grant of option to purchase Class A Common Stock under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 78 shares vesting August 4, 2026, 277 shares vesting November 4, 2026, 277 shares vesting February 4, 2027 and 268 shares vesting May 4, 2027 or, if earlier for each installment, the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting provided all then unvested shares shall vest in full on the date of the Issuer's next annual meeting of stockholders, all subject to the Reporting Person's continuous service as a member of the audit committee of the board of directors immediately prior to such date. These stock options were issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer and meeting fees of $12,500, prorated from the date the Reporting Person became a non-employee director to the date of the Issuer's next annual meeting of stockholders. /s/ Kelli Faerber Attorney-in Fact for Penry W. Price 2026-07-13