Anna Protopapas Mersana Therapeutics, Inc. (MRSN) insider trading activity

Anna Protopapas is Director of Mersana Therapeutics, Inc.. Currently has a direct ownership of 168,041 shares of MRSN, which is worth approximately $99,144. The most recent transaction as insider was on Jan 16, 2025, when has been sold 8,637 shares (Common Stock) at a price of $0.58 per share, resulting in proceeds of $5,009. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 168K

34.27% 3M change

34.27% 12M change

Total Value Held $99,144

Anna Protopapas Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jan 16 2025	SELL Open market or private sale	$5,009 $0.58 p/Share	8,637 Reduced 4.89%	168,041 Common Stock
Jan 15 2025	SELL Open market or private sale	$3,900 $0.63 p/Share	6,191 Reduced 3.83%	155,428 Common Stock
Jan 15 2025	BUY Exercise of conversion of derivative security	-	21,250 Added 10.74%	176,678 Common Stock
Jan 14 2025	SELL Open market or private sale	$7,612 $0.66 p/Share	11,534 Reduced 7.37%	144,869 Common Stock
Jan 14 2025	BUY Exercise of conversion of derivative security	-	16,750 Added 9.39%	161,619 Common Stock
Jan 13 2025	BUY Exercise of conversion of derivative security	-	31,250 Added 16.65%	156,403 Common Stock
Jan 16 2024	SELL Open market or private sale	$79,671 $2.71 p/Share	29,399 Reduced 19.02%	125,153 Common Stock
Jan 15 2024	BUY Exercise of conversion of derivative security	-	38,958 Added 20.13%	154,552 Common Stock
Jan 14 2024	BUY Exercise of conversion of derivative security	-	16,750 Added 12.66%	115,594 Common Stock
Jan 13 2024	BUY Exercise of conversion of derivative security	-	31,250 Added 24.02%	98,844 Common Stock
Sep 11 2023	BUY Grant, award, or other acquisition	-	16,643 Added 19.76%	67,594 Common Stock
Jan 17 2023	SELL Open market or private sale	$99,566 $5.74 p/Share	17,346 Reduced 26.25%	48,733 Common Stock
Jan 15 2023	BUY Exercise of conversion of derivative security	-	38,958 Added 37.09%	66,079 Common Stock
Jan 14 2023	BUY Exercise of conversion of derivative security	-	16,750 Added 38.18%	27,121 Common Stock
May 20 2022	SELL Bona fide gift	-	240,244 Reduced 95.86%	10,371 Common Stock
Jan 14 2022	BUY Exercise of conversion of derivative security	-	38,958 Added 10.77%	322,878 Common Stock
Jul 19 2021	SELL Open market or private sale	$263,250 $12.02 p/Share	21,901 Reduced 7.18%	282,978 Common Stock
Jul 16 2021	SELL Open market or private sale	$249,936 $12.47 p/Share	20,043 Reduced 6.17%	304,879 Common Stock
Jul 15 2021	BUY Exercise of conversion of derivative security	-	100,000 Added 23.53%	324,922 Common Stock
Jan 15 2021	SELL Payment of exercise price or tax liability	$109,626 $21.09 p/Share	5,198 Reduced 2.26%	224,922 Common Stock
Jan 15 2021	BUY Exercise of conversion of derivative security	-	17,709 Added 7.15%	230,120 Common Stock

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Nuvalent, Inc. Healthcare

Anna Protopapas

Director

Cambridge, MA

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