Arbutus Initiates International Patent Infringement Enforcement Actions Against Pfizer and BioNTech, Receives First Payment From Moderna Settlement Agreement and Announces Intent to Return Capital to Shareholders

Arbutus and its exclusive licensee, Genevant, filed three international lawsuits seeking to enforce patents protecting their innovative lipid nanoparticle (“LNP”) technology against Pfizer and BioNTech Received approximately $178M from Moderna as Arbutus’ share of the noncontingent payment under