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MRSN
Mersana Therapeutics, Inc. Common Stock
stock NASDAQ

At Close

Nov 3, 2025 3:59:50 PM EST

9.45USD-1.357%(-0.13)42,031

0.00Bid 0.00Ask 0.00Spread

Pre-market

Nov 3, 2025 8:38:30 AM EST

9.39USD-1.983%(-0.19)446

After-hours

Nov 3, 2025 4:00:30 PM EST

9.44USD-0.106%(-0.01)243

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Adjustments

All MRSN1 MRSN

MRSN Max Pain Summary

The max pain for MRSN on November 21st, 2025 is $0.50.

MRSN Option Chain Summary

	Calls		Puts		Max	P/C	Price vs.
Exp.	ITM	OTM	ITM	OTM	Pain¹	Ratio²	Max Pain
Nov 21, 2025	146	0	0	0	0.50	0.00	+1,790.00%
Jan 16, 2026	4,653	111	0	56	0.50	0.01	+1,790.00%
Feb 20, 2026	847	0	0	0	0.50	0.00	+1,790.00%
Totals	5,646 5,757 H	111	0 56 H	56		0.01

¹ Maximum pain is the strike price with the most open puts and calls and the price at which the stock would cause financial losses for the largest number of option holders at expiration. Investopedia

² In general, greater than 0.7 suggests bearish sentiment is building in the market; below 0.7 is considered a bullish indicator. Investopedia