TTD · Trade Desk, Inc.

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 board of directors immediately prior to such date.

The option was granted on July 9, 2026, the 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 original grant vesting on each monthly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates.

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 $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.

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.

Represents a restricted stock award with a Vesting Commencement Date ("VCD") of July 9, 2026. One-fourth (1/4th) of the granted shares vest on August 15, 2027, and the remainder of the granted shares vest ratably over 12 quarters on each quarterly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates.

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 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 initial director equity grant.

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 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 restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares 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 restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an initial director equity grant.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 1,951 shares vesting August 4, 2026, 3,326 shares vesting November 4, 2026, 3,325 shares vesting February 4, 2027 and 3,218 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 restricted stock award 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.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.13 to $21.20, 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 purchased at each separate price within the ranges set forth in this footnote.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four installments with 2,772 shares vesting August 4, 2026, 3,270 shares vesting November 4, 2026, 3,271 shares vesting February 4, 2027 and 3,164 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 restricted stock award 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.

The related shares were represented by s Restricted Stock Award previously granted to the Reporting Person on April 15, 2025, that were subject to vesting. In connection with the Reporting Person's termination of employment with the Issuer, the unvested restricted stock awards were forfeited.

The related shares were represented by a Restricted Stock Award previously granted to the Reporting Person on March 3, 2026, that were subject to vesting. In connection with the Reporting Person's termination of employment with the Issuer, the unvested restricted stock awards were forfeited.

The related shares were represented by a Restricted Stock Unit Award previously granted to the Reporting Person on April 24, 2023, that were subject to vesting. In connection with the Reporting Person's termination of employment with the Issuer, the unvested restricted stock unit awards were forfeited.

The related shares were represented by a Restricted Stock Award previously granted to the Reporting Person on April 23, 2024, that were subject to vesting. In connection with the Reporting Person's termination of employment with the Issuer, the unvested restricted stock awards were forfeited.

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 Unit Award granted April 26, 2022.

Includes 622 shares acquired through the Employee Stock Purchase Plan on May 15, 2026.

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 Unit Award granted April 24, 2023.

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 April 24, 2023.

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 March 3, 2026.

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 a transfer of shares from the Reporting Person to a trust held by the Reporting Person.

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 April 3, 2025.

Includes 622 shares acquired through the Employee Stock Purchase Plan on May 15, 2026.

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 March 3, 2026.

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 Unit Award granted April 23, 2024.

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 April 15, 2025.

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 April 26, 2022.

Includes 621 shares acquired through the Employee Stock Purchase Plan on May 15, 2026.

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 Unit Award granted April 15, 2025.

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 March 3, 2026.

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 Unit Award granted April 24, 2023.

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 April 23, 2024.

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 March 3, 2026.

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 Unit Award granted April 26, 2022.

Includes 622 shares acquired through the Employee Stock Purchase Plan on May 15, 2026.

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 April 15, 2025.

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 April 23, 2024.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant.

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 $25,000.

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 four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 nominating and corporate governance committee immediately prior to such date.

This price represents 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 restricted stock awards granted.

This restricted stock award was 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.

This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant.

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 four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 $12,500.

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 four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 nominating and corporate governance committee of the board of directors immediately prior to such date.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 immediately prior to such date.

This price represents 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 restricted stock awards granted.

This restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer and meeting fees of $5,000.

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 $5,000.

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 four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 restricted stock units under the Issuer's 2025 Incentive Award Plan. Each restricted stock unit represents a contingent right to receive one share of Issuer's Class A common stock.

The restricted stock units vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, provided all then unvested units 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.

The restricted stock units were issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant.

Grant of restricted stock award under the Issuer's 2025 Incentive Award Plan. The shares vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, 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 restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer and meeting fees of $25,000.

This price represents 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 restricted stock awards granted.

Grant of restricted stock units under the Issuer's 2025 Incentive Award Plan. Each restricted stock unit represents a contingent right to receive one share of Issuer's Class A common stock.

The restricted stock units vest in four equal installments at the earlier of, for each such installment, (i) the date of the Issuer's applicable regularly scheduled quarterly Corporate Board meeting for the next four quarters from the date of grant or (ii) the date of each of the next four corresponding quarterly anniversaries of the date of grant, provided all then unvested units 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.

The restricted stock units were issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant.

This option was previously reported as covering 133 shares at an exercise price of $823.88 per share, but was adjusted to reflect a 10-for-1 stock split effective June 16, 2021.

The option was granted on April 29, 2021, with a Vesting Commencement Date ("VCD") of December 29, 2024. One-fourth (1/4th) of the shares subject to the option vest on each monthly anniversary of the VCD, subject to continued employment with the Issuer through the applicable vesting dates.

Grant of restricted stock units under the Issuer's 2025 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of Issuer's Class A common stock.

The restricted stock units vest in quarterly installments over the three-year period following the grant, subject to the Reporting Person's continuous service as a member of the board of directors through such date.

This restricted stock unit award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an initial director equity grant.

Grant of restricted stock award under the Issuer's 2025 Equity Incentive Plan. The shares 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 chairperson of the nominating and corporate governance committee immediately prior to such date.

This price represents 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 restricted stock awards granted.

This restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer and meeting fees of $9,500, prorated from the date of grant to the date of the Issuer's next annual meeting of stockholders.