X0206 3 2024-06-28 0 0001444192 Acasti Pharma Inc. ACST 0001940272 ADAR1 Capital Management, LLC 3503 WILD CHERRY DRIVE BUILDING 9 AUSTIN TX 78738 0 0 1 0 0001758866 ADAR1 Partners, LP 3503 WILD CHERRY DRIVE BUILDING 9 AUSTIN TX 78738 0 0 1 0 Class A Common Stock 959571 I By: ADAR1 Partners ADAR1 Capital Management GP, LLC is the general partner of ADAR1 Partners, LP ("ADAR1 Partners"). ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP. Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners. For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise. ADAR1 Capital Management, LLC, By /s/ Daniel Schneeberger, Manager 2024-07-09 ADAR1 Partners, LP, By ADAR1 Capital Management GP, LLC, its general partner, By/s/ Daniel Schneeberger, Manager 2024-07-09