SCHEDULE 13G/A 0001140361-24-045810 0001480751 XXXXXXXX LIVE 1 Common stock, par value $0.0001 per share 12/31/2024 0001478320 Adaptive Biotechnologies Corp 00650F109 1165 EASTLAKE AVENUE EAST SEATTLE WA 98109 Rule 13d-1(b) Nikko Asset Management Americas, Inc. X1 0 5259084 0 6833137 6833137 N 4.63 IA Adaptive Biotechnologies Corp 1165 EASTLAKE AVENUE EAST, SEATTLE, Washington, 98109 Nikko Asset Management Americas, Inc. 605 Third Avenue, 38th Floor, New York, NY 10158 USA N IA 6,833,137 4.63 0 5,259,084 0 6,833,137 N Y N See Exhibit A. N See Exhibit A. 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. Nikko Asset Management Americas, Inc. /s/ Gary L. Beckham 02/13/2025