Mersana Therapeutics (MRSN) Options Chain & Prices $0.32 -0.08 (-20.59%) Closing price 04:00 PM EasternExtended Trading$0.31 -0.01 (-2.83%) As of 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock MRSN Put and Call Options List 2/20/2026 1/16/2026 11/21/2025 9/19/2025 8/15/2025 Options Date Put and Call Options Put Options Call Options Options Type All In The Money Out of The Money Moneyness With Volume Without Volume All Volume Strike Price Min Strike Price Max Export to Excel ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTradesEnd-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies C4 Therapeutics Options Chain Black Diamond Therapeutics Options Chain Alector Options Chain Caribou Biosciences Options Chain NextCure Options Chain Lifevantage Options Chain Enanta Pharmaceuticals Options Chain Spero Therapeutics Options Chain Theratechnologies Options Chain Rapt Therapeutics Options Chain Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:MRSN) was last updated on 7/24/2025 by MarketBeat.com Staff From Our PartnersElon Just Fired the IRS Agents Targeting Your SavingsElon Musk just fired 6,700 IRS agents — and exposed a war on your retirement. While D.C. scrambles to regai...Priority Gold | SponsoredWhy Elon put $51 million into thisA single U.S. company has started producing a “miracle metal” once locked in research labs. Now? They’re qu...True Market Insiders | SponsoredTrump’s Endgame? (R.I.P. 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