Cyclerion Therapeutics Stock Soars 350% On Korsana Merger, $380 Million Financing

Under the deal, the combined company is expected to operate as Korsana Biosciences and trade on the Nasdaq under the ticker symbol KRSA. The move appears to be driving enthusiasm because it gives public-market investors exposure to Korsana's lead program, KRSA-028, a next-generation shuttled monoclonal antibody targeting amyloid beta for the treatment of Alzheimer's disease.