Mersana Therapeutics (MRSN) Stock Chart & Stock Price History $0.30 +0.01 (+1.72%) As of 06/30/2025 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Mersana Therapeutics Stock Price Performance The Mersana Therapeutics (MRSN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 84.97%, with a year-to-date return of -79.30%. In the past month, the stock has decreased 13.70%, reflecting recent market activity. As of the latest close, Mersana Therapeutics traded at $0.30 with a market cap of $36.89 million and volume of 3.57 million shares. Five years ago, the stock traded at $22.66, representing a 98.69% decrease over that period. At the time, it had a market cap of $1.49 billion and a volume of 1.12 million shares. 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Email Address 5 Day Performance-8.92%1 Month Performance-13.70%3 Month Performance-11.46%Year-To-Date Performance-79.30%1 Year Performance-84.97%5 Year Performance-98.69% MRSN Stock Chart for Tuesday, July, 1, 2025 MRSN Chart by TradingView Mersana Therapeutics Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization06/30/2025$0.29$0.30+1.72%$0.32$0.283.57 million shs$36.89 million06/27/2025$0.33$0.29-10.46%$0.34$0.2915.79 million shs$36.27 million06/26/2025$0.35$0.33-7.14%$0.36$0.322.86 million shs$40.51 million06/25/2025$0.34$0.35+2.46%$0.36$0.341.23 million shs$43.62 million06/24/2025$0.34$0.34+0.29%$0.36$0.341.11 million shs$42.57 million06/23/2025$0.37$0.34-6.91%$0.37$0.331.71 million shs$42.45 million06/20/2025$0.36$0.37+2.75%$0.37$0.352.08 million shs$45.60 million06/19/2025$0.36$0.36$0.36$0.35808,745 shs$44.38 million06/18/2025$0.35$0.36+0.76%$0.36$0.35808,745 shs$44.38 million06/17/2025$0.38$0.35-6.98%$0.38$0.351.44 million shs$44.05 million Get the Latest News and Ratings for MRSN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Mersana Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 06/16/2025$0.37$0.38+3.46%$0.39$0.351.52 million shs$47.35 million06/13/2025$0.36$0.37+1.13%$0.38$0.351.35 million shs$45.77 million06/12/2025$0.38$0.36-4.55%$0.38$0.362.16 million shs$45.25 million06/11/2025$0.41$0.38-6.54%$0.43$0.382.50 million shs$47.41 million06/10/2025$0.39$0.41+4.15%$0.46$0.384.42 million shs$50.73 million06/09/2025$0.39$0.39+1.27%$0.40$0.382.35 million shs$48.71 million06/06/2025$0.37$0.39+4.78%$0.40$0.362.70 million shs$48.10 million06/05/2025$0.37$0.37-0.19%$0.38$0.361.25 million shs$45.90 million06/04/2025$0.35$0.37+5.79%$0.37$0.341.21 million shs$45.99 million06/03/2025$0.37$0.35-6.71%$0.38$0.343.47 million shs$43.47 million06/02/2025$0.34$0.37+9.01%$0.38$0.343.20 million shs$46.60 million05/30/2025$0.35$0.34-1.72%$0.36$0.331.54 million shs$42.75 million Related Companies IKT Stock Chart BDTX Stock Chart ALEC Stock Chart TIL Stock Chart GALT Stock Chart LXEO Stock Chart KYTX Stock Chart RAPT Stock Chart LYEL Stock Chart SKYE Stock Chart Receive MRSN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Mersana Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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