Live feed17:25:34·524dINSIDERFilingvia QuantisnowDirector Protopapas Anna converted options into 16,750 shares and sold $3,900 worth of shares (6,191 units at $0.63), increasing direct ownership by 7% to 155,428 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.MRSN· Mersana Therapeutics Inc.Health CareOriginal source