X0508 4 2025-11-14 0 0001386570 Niagen Bioscience, Inc. NAGE 0001834681 Pamir Ozan 10900 WILSHIRE BLVD. SUITE 600 LOS ANGELES CA 90024 0 1 0 0 Chief Financial Officer 0 Common Stock 2025-11-14 4 P 0 4464.962 6.81 A 7372.159 D Common Stock 2025-11-14 4 P 0 2220.443 6.85 A 2220.443 I The reported securities are held by the reporting person's spouse. The weighted average purchase price for the transaction reported was $6.81, and the range of prices were between $6.7975 and $6.82, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price within the range above will be provided. /s/ Jeong James Lee, Attorney-in-Fact 2025-11-17