Great Point Partners, LLC Reports New 9.99% Stake in ProMIS Neurosciences Inc. (PMN)

On May 15, 2026, Great Point Partners, LLC, along with Dr. Jeffrey R. Jay and Ms. Lillian Nordahl, filed a Schedule 13G reporting a new 9.99% ownership stake in ProMIS Neurosciences Inc. (PMN). The reporting persons beneficially own 954,082 common shares, which includes 371,402 shares held directly by Biomedical Value Fund, L.P. (BVF) and Biomedical Offshore Value Fund, Ltd. (BOVF), plus 582,680 shares issuable upon the exercise of warrants. While the group holds warrants for a total of 650,731 shares, their exercisability is limited by a 9.99% Beneficial Ownership Cap. Great Point Partners serves as the investment manager for both BVF and BOVF, with Dr. Jay and Ms. Nordahl exercising voting and investment power. This filing represents a significant new position for the group, as their previous ownership was reported at 0%. The filing confirms that the shares were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer.