SCHEDULE 13G/A 0001088875-20-000030 0001088875 XXXXXXXX LIVE 8 Class A Common Stock 12/31/2025 0001671933 Trade Desk, Inc. 88339J105 42 N. CHESTNUT STREET 42 N. CHESTNUT STREET VENTURA CA 93001 Rule 13d-1(b) BAILLIE GIFFORD & CO X0 11829073.00 22305995.00 22305995.00 5.1 IA Trade Desk, Inc. 42 N. CHESTNUT STREET, 42 N. CHESTNUT STREET, VENTURA, CALIFORNIA, 93001 Baillie Gifford & Co Calton Square 1 Greenside Row Edinburgh EH1 3AN Scotland UK United Kingdom N FI Investment Adviser 22,305,995 5.07 11,829,073 0 22,305,995 0 Y N Securities reported on this Schedule 13G as being beneficially owned by Baillie Gifford & Co. are held by Baillie Gifford & Co. and/or one or more of its investment adviser subsidiaries, which may include Baillie Gifford Overseas Limited, on behalf of investment advisory clients, which may include investment companies registered under the Investment Company Act, employee benefit plans, pension funds or other institutional clients. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. BAILLIE GIFFORD & CO Grant Meikle 02/09/2026