Jim Simons Mersana Therapeutics, Inc. Transaction History

Renaissance Technologies LLC

$70.6 Billion
Q2 2025

A detailed history of Jim Simons (Renaissance Technologies LLC) transactions in Mersana Therapeutics, Inc. stock. As of the latest transaction made, Renaissance Technologies LLC holds 2,850,194 shares of MRSN stock, worth $17.3 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

2,850,194

Previous 839,919 239.34%

Holding current value

$17.3 Million

Previous $285,000 200.0%

% of portfolio

0.0%

Previous 0.0%

23 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 13, 2025	BUY	$0.26 - $0.41 $522,671 - $824,212	2,010,275 Added 239.34%	2,850,194 $855,000
Q1 2025 May 14, 2025	BUY	$0.34 - $1.4 $79,435 - $327,087	233,634 Added 38.54%	839,919 $285,000
Q4 2024 Feb 13, 2025	BUY	$1.42 - $2.68 $161,263 - $304,356	113,566 Added 23.05%	606,285 $866,000
Q3 2024 Nov 13, 2024	SELL	$1.23 - $2.25 $1.18 Million - $2.15 Million	-955,500 Reduced 65.98%	492,719 $931,000
Q2 2024 Aug 09, 2024	BUY	$2.0 - $4.45 $40,800 - $90,780	20,400 Added 1.43%	1,448,219 $2.91 Million
Q1 2024 May 13, 2024	BUY	$2.16 - $5.94 $1.21 Million - $3.34 Million	562,088 Added 64.93%	1,427,819 $6.4 Million
Q4 2023 Feb 13, 2024	SELL	$1.11 - $2.34 $66,808 - $140,839	-60,188 Reduced 6.5%	865,731 $2.01 Million
Q3 2023 Nov 14, 2023	SELL	$1.06 - $3.91 $129,320 - $477,020	-122,000 Reduced 11.64%	925,919 $1.18 Million
Q2 2023 Aug 11, 2023	SELL	$3.08 - $9.55 $624,008 - $1.93 Million	-202,600 Reduced 16.2%	1,047,919 $3.45 Million
Q1 2023 May 12, 2023	BUY	$4.0 - $7.02 $2.72 Million - $4.77 Million	678,800 Added 118.73%	1,250,519 $5.14 Million
Q4 2022 Feb 13, 2023	SELL	$5.65 - $7.86 $718,115 - $999,006	-127,100 Reduced 18.19%	571,719 $3.35 Million
Q3 2022 Nov 14, 2022	BUY	$4.63 - $8.0 $594,955 - $1.03 Million	128,500 Added 22.53%	698,819 $4.72 Million
Q2 2022 Aug 12, 2022	SELL	$2.84 - $5.0 $990,822 - $1.74 Million	-348,881 Reduced 37.95%	570,319 $2.64 Million
Q1 2022 May 13, 2022	BUY	$3.74 - $6.63 $2.16 Million - $3.82 Million	576,600 Added 168.3%	919,200 $3.67 Million
Q4 2021 Feb 11, 2022	BUY	$5.48 - $9.86 $1.88 Million - $3.38 Million	342,600 New	342,600 $2.13 Million
Q4 2020 Feb 10, 2021	SELL	$16.84 - $27.59 $1.2 Million - $1.97 Million	-71,500 Closed	0 $0
Q3 2020 Nov 13, 2020	SELL	$16.2 - $25.7 $4.35 Million - $6.91 Million	-268,768 Reduced 78.99%	71,500 $1.33 Million
Q2 2020 Aug 13, 2020	SELL	$5.24 - $23.4 $2.32 Million - $10.4 Million	-443,300 Reduced 56.57%	340,268 $7.96 Million
Q1 2020 May 14, 2020	BUY	$4.41 - $9.28 $281,358 - $592,064	63,800 Added 8.86%	783,568 $4.57 Million
Q4 2019 Feb 13, 2020	SELL	$1.45 - $6.73 $68,087 - $316,020	-46,957 Reduced 6.12%	719,768 $4.12 Million
Q3 2019 Nov 13, 2019	BUY	$1.54 - $4.2 $771,085 - $2.1 Million	500,705 Added 188.22%	766,725 $1.21 Million
Q2 2019 Aug 12, 2019	BUY	$3.84 - $6.4 $351,360 - $585,600	91,500 Added 52.43%	266,020 $1.08 Million
Q1 2019 May 14, 2019	BUY	$3.51 - $7.3 $612,565 - $1.27 Million	174,520 New	174,520 $918,000

Others Institutions Holding MRSN

# of Institutions

Shares Held

95.3M

Call Options Held

34.3K

Put Options Held

14K

View Full List

About Mersana Therapeutics, Inc.

Ticker MRSN
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 97,169,296
Market Cap $590M
Description
Mersana Therapeutics, Inc., a clinical stage biopharmaceutical company, develops antibody drug conjugates (ADC) for cancer patients with unmet need. It develops XMT-1592, a Dolasynthen ADC targeting NaPi2b-expressing tumor cells, which is in phase I clinical trial for the treatment of ovarian cancer and NSCLC adenocarcinoma. The company also dev...

More about MRSN

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