SCHEDULE 13G/A 0002058093 XXXXXXXX LIVE 1 Common Stock 12/31/2025 0001868279 ArriVent BioPharma, Inc. 04272N102 18 CAMPUS BLVD. SUITE 100 NEWTOWN SQUARE PA 19073-3269 Rule 13d-1(d) INFINITUM ASSET MANAGEMENT, LLC FL 4123923.00 0.00 4123923.00 0.00 4123923.00 9.9 IA Infinitum Partners GP, LLC E9 4123923.00 0.00 4123923.00 0.00 4123923.00 9.9 PN Infinitum Cayman Master, Ltd. E9 4123923.00 0.00 4123923.00 0.00 4123923.00 9.9 PN ArriVent BioPharma, Inc. 18 CAMPUS BLVD., SUITE 100, NEWTOWN SQUARE, PENNSYLVANIA, 19073-3269. Infinitum Cayman Master Ltd (Fund) Infinitum Asset Management LLC (Asset Manager) Infinitum Partners GP, LLC (GP) 201 E Las Olas Blvd, Suite 1140 Fort Lauderdale, FL 33301 Infinitum Cayman Master Ltd, Cayman Islands Infinitum Asset Management LLC, Delaware Infinitum Partners GP, LLC, Delaware Y Infinitum Cayman Master Ltd 4,123,923 Infinitum Asset Management LLC 4,123,923 Infinitum Partners GP, LLC 4,123,923 Infinitum Cayman Master Ltd 9.9% Infinitum Asset Management LLC 9.9% Infinitum Partners GP, LLC 9.9% Infinitum Cayman Master Ltd 4,123,923 Infinitum Asset Management LLC 4,123,923 Infinitum Partners GP, LLC 4,123,923 Infinitum Cayman Master Ltd 0 Infinitum Asset Management LLC 0 Infinitum Partners GP, LLC 0 Infinitum Cayman Master Ltd 4,123,923 Infinitum Asset Management LLC 4,123,923 Infinitum Partners GP, LLC 4,123,923 Y Y 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. INFINITUM ASSET MANAGEMENT, LLC John Yetimoglu 02/17/2026 Infinitum Partners GP, LLC John Yetimoglu 02/17/2026 Infinitum Cayman Master, Ltd. John Yetimoglu 02/17/2026