Mersana Therapeutics, Inc. (NASDAQ:MRSN) Q4 2021 Earnings Conference Call February 28, 2022 8:00 AM ET Company Participants James Salierno - Associate Director, Investor Relations. Anna Protopapas - President & CEO Arvin Yang - Senior Vice President & Chief Medical Officer Brian DeSchuytner - Senior Vice President &Chief Financial Officer Conference Call Participants Jonathan Chang - SVB Leerink Boris Peaker - Cowen Colleen Kusy - Baird Capital Kaveri Pohlman - BTIG Jessica Fye - JPMorgan Operator Good morn ...