Ownership Report of ProMIS Neurosciences Inc. by Ally Bridge Entities

SEC Filing 3 (0001641172-25-022100)

The filing reports the ownership of ProMIS Neurosciences Inc. (PMN) by several entities associated with Ally Bridge Group. ABG Management Ltd., Ally Bridge MedAlpha Master Fund L.P., Ally Bridge Group (NY) LLC, and Fan Yu collectively hold 6,058,738 common shares and various warrants. The warrants have different exercise dates and prices, with expiration dates ranging from 2029 to 2030. Fan Yu, as the controlling stockholder of ABG Management Ltd., may be deemed to share beneficial ownership of the securities held by Ally Bridge MedAlpha Master Fund L.P. The filing includes footnotes clarifying the nature of ownership and the expiration of warrants.