CAMBRIDGE, Mass. --(BUSINESS WIRE)--Aug. 3, 2022-- Merrimack Pharmaceuticals, Inc. (Nasdaq: MACK) [(“Merrimack” or the “Company”)] announced that Ipsen, SA (“Ipsen”) has issued a press release today reporting its primary analysis of the results of its Phase 3 trial of Onivyde® (irinotecan liposomal