SESN reverse-merges into—(private)—Carisma Therapeutics: https://www.businesswire.com/news/home/20220921005487/en Pre-merger Sesen Bio stockholders are expected to own approximately 41.7% and pre-merger Carisma stockholders are expected to own approximately 58.3% of the combined company, in each case before giving effect to the concurrent financing… …Carisma Therapeutics Inc. is a biopharmaceutical company dedicated to developing a differentiated and proprietary cell therapy platform focused on engineered macrophages, cells that play a crucial role in both the innate and adaptive immune response. The first applications of the platform, developed in collaboration with the University of Pennsylvania, are autologous chimeric antigen receptor (CAR)-macrophages for the treatment of solid tumors. Carisma Therapeutics is headquartered in Philadelphia, PA. After the closing, the shares will trade with the Nasdaq symbol, CARM.