Timothy B Lowinger Mersana Therapeutics, Inc. (MRSN) insider trading activity

Timothy B Lowinger is SVP, Chief Sci.&Tech. Officer of Mersana Therapeutics, Inc.. Currently has a direct ownership of 235,642 shares of MRSN, which is worth approximately $428,868. The most recent transaction as insider was on Oct 03, 2024, when has been sold 5,598 shares (Common Stock) at a price of $1.96 per share, resulting in proceeds of $10,972. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 236K

18.22% 3M change

30.65% 12M change

Total Value Held $428,868

Timothy B Lowinger Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Oct 03 2024	SELL Open market or private sale	$10,972 $1.96 p/Share	5,598 Reduced 2.32%	235,642 Common Stock
Oct 02 2024	SELL Open market or private sale	$16,178 $2.0 p/Share	8,089 Reduced 3.24%	241,240 Common Stock
Oct 01 2024	BUY Exercise of conversion of derivative security	-	50,000 Added 16.7%	249,329 Common Stock
Jan 16 2024	SELL Open market or private sale	$28,208 $2.71 p/Share	10,409 Reduced 4.96%	199,329 Common Stock
Jan 15 2024	BUY Exercise of conversion of derivative security	-	15,208 Added 6.76%	209,738 Common Stock
Jan 14 2024	BUY Exercise of conversion of derivative security	-	4,792 Added 2.4%	194,530 Common Stock
Jan 13 2024	BUY Exercise of conversion of derivative security	-	9,375 Added 4.71%	189,738 Common Stock
Jan 17 2023	SELL Open market or private sale	$35,777 $5.74 p/Share	6,233 Reduced 3.34%	180,363 Common Stock
Jan 15 2023	BUY Exercise of conversion of derivative security	-	15,209 Added 7.54%	186,596 Common Stock
Jan 14 2023	BUY Exercise of conversion of derivative security	-	4,792 Added 2.72%	171,387 Common Stock
Dec 14 2022	BUY Exercise of conversion of derivative security	$51,980 $1.47 p/Share	35,361 Added 17.51%	166,595 Common Stock
Jan 18 2022	SELL Open market or private sale	$28,067 $5.92 p/Share	4,741 Reduced 3.49%	131,234 Common Stock
Jan 14 2022	BUY Exercise of conversion of derivative security	-	15,209 Added 10.06%	135,975 Common Stock
Dec 20 2021	BUY Exercise of conversion of derivative security	$63,830 $1.4 p/Share	45,593 Added 27.41%	120,766 Common Stock
Aug 20 2021	SELL Open market or private sale	$24,398 $11.01 p/Share	2,216 Reduced 2.86%	75,173 Common Stock
Aug 20 2021	BUY Exercise of conversion of derivative security	$13,651 $6.16 p/Share	2,216 Added 2.78%	77,389 Common Stock
Jul 20 2021	SELL Open market or private sale	$26,969 $12.11 p/Share	2,227 Reduced 2.88%	75,173 Common Stock
Jul 20 2021	BUY Exercise of conversion of derivative security	$13,718 $6.16 p/Share	2,227 Added 2.8%	77,400 Common Stock
Jul 19 2021	SELL Open market or private sale	$102,122 $12.02 p/Share	8,496 Reduced 10.15%	75,173 Common Stock
Jul 16 2021	SELL Open market or private sale	$96,954 $12.47 p/Share	7,775 Reduced 8.5%	83,669 Common Stock
Jul 15 2021	BUY Exercise of conversion of derivative security	-	40,000 Added 30.43%	91,444 Common Stock
Jul 08 2021	BUY Exercise of conversion of derivative security	$28,000 $1.4 p/Share	20,000 Added 27.99%	51,444 Common Stock
Jul 01 2021	SELL Open market or private sale	$25,650 $13.6 p/Share	1,886 Reduced 5.66%	31,444 Common Stock
Jul 01 2021	BUY Exercise of conversion of derivative security	$9,128 $4.84 p/Share	1,886 Added 5.36%	33,330 Common Stock
Jun 21 2021	SELL Open market or private sale	$30,592 $13.78 p/Share	2,220 Reduced 6.59%	31,444 Common Stock

TBL

Timothy B Lowinger

SVP, Chief Sci.&Tech. Officer

Cambridge, MA

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