Trade Desk, Inc.

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $22.93 to $23.92, 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.

2. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.93 to $24.34, 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.

3. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.81 to $24.99, 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.

4. Represents a restricted stock award with a Vesting Commencement Date ("VCD") of March 3, 2026. One-sixteenth (1/16th) of the granted shares vest on May 15, 2026 and the remainder of the granted shares vest ratably over 15 quarters on each quarterly anniversary thereafter, subject to continued employment with the Issuer through the applicable vesting dates.

5. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.59 to $25.25, 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.

6. 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.

7. Represents securities held by the Jeff T. Green Family Foundation (the "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.

8. 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 of the VCD, subject to continued employment with the Issuer through the applicable vesting dates.