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Mersana Therapeutics (MRSN) Stock Chart & Stock Price History

Mersana Therapeutics logo
$7.25 -0.10 (-1.36%)
Closing price 09/19/2025 04:00 PM Eastern
Extended Trading
$7.28 +0.03 (+0.40%)
As of 09/19/2025 07:51 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.
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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 86.57%, with a year-to-date return of -79.72%. In the past month, the stock has decreased 0.55%, reflecting recent market activity.

As of the latest close, Mersana Therapeutics traded at $7.25 with a market cap of $36.18 million and volume of 75,506 shares. Five years ago, the stock traded at a split-adjusted price of $551.50, representing a 98.69% decrease over that period. At the time, it had a market cap of $1.51 billion and a volume of 211,737 shares.

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5 Day
Performance
+1.12%
1 Month
Performance
-0.55%
3 Month
Performance
-20.74%
Year-To-Date
Performance
-79.72%
1 Year
Performance
-86.57%
5 Year
Performance
-98.69%

MRSN Stock Chart for Saturday, September, 20, 2025

MRSN Chart by TradingView

Mersana Therapeutics Stock Price History

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DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
09/19/2025$7.35$7.25
-1.36%		$7.40$7.0475,506 shs$36.18 million
09/18/2025$7.15$7.35
+2.80%		$7.40$7.0936,766 shs$35.68 million
09/17/2025$7.21$7.15
-0.83%		$7.43$7.0567,343 shs$35.68 million
09/16/2025$7.17$7.21
+0.56%		$7.49$7.2116,992 shs$35.98 million
09/15/2025$7.14$7.17
+0.42%		$7.40$7.0430,072 shs$35.79 million
09/12/2025$7.47$7.14
-4.42%		$7.46$7.1327,266 shs$35.64 million
09/11/2025$7.35$7.47
+1.63%		$7.53$7.2630,561 shs$37.28 million
09/10/2025$7.66$7.35
-4.05%		$7.70$7.3350,337 shs$36.68 million
09/09/2025$7.04$7.66
+8.81%		$7.66$6.9065,974 shs$38.23 million
09/08/2025$6.82$7.04
+3.23%		$7.10$6.6359,781 shs$35.13 million
09/05/2025$7.12$6.82
-4.21%		$7.25$6.7988,382 shs$34.03 million
09/04/2025$6.98$7.12
+2.01%		$7.16$6.8045,956 shs$35.53 million
09/03/2025$7.02$6.98
-0.57%		$7.55$6.9747,664 shs$34.84 million
09/02/2025$7.32$7.02
-4.10%		$7.53$6.9751,812 shs$35.03 million
09/01/2025$7.32$7.32$7.85$7.3240,654 shs$36.53 million
08/29/2025$7.66$7.32
-4.44%		$7.85$7.3240,654 shs$36.53 million
08/28/2025$7.63$7.66
+0.39%		$8.05$7.5453,503 shs$38.23 million
08/27/2025$7.65$7.63
-0.26%		$7.74$7.5531,886 shs$38.07 million
08/26/2025$7.65$7.65$7.71$7.4152,342 shs$38.17 million
08/25/2025$7.75$7.65
-1.29%		$8.09$7.5190,518 shs$38.18 million
08/22/2025$8.11$7.75
-4.44%		$8.19$7.7171,731 shs$38.68 million
08/21/2025$7.29$8.11
+11.25%		$8.13$7.10308,536 shs$40.47 million
08/20/2025$7.24$7.29
+0.69%		$7.39$6.9636,837 shs$36.38 million
08/19/2025$7.38$7.24
-1.90%		$7.42$7.0377,280 shs$36.14 million
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This page (NASDAQ:MRSN) was last updated on 9/20/2025 by MarketBeat.com Staff
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