Abiopharma

Laval, Quebec, Canada H7V 4A7 BELLUS Health Announces the Launch of a Public Offering of Common Shares in Canada and the United States LAVAL, Quebec, July 13, 2022 BELLUS Health Inc. (BELLUS Health or the Company) (TSX and Nasdaq BLU), announced today the filing of a preliminary prospectus supplement (the Supplement) to its amended and restated short form base shelf prospectus dated December 14, 2021, amending and restating the short form base shelf prospectus dated December 23, 2020 (the AR Base Prospectus) in connection with a proposed public offering of its common shares (the Offering). 275 Armand--Frappier Blvd.