MRSN Insider Trading

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Insider Trading History
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About

Insider Ownership Percentage: 11.80%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $154,116.74

Mersana Therapeutics Insider Trading History Chart

Mersana Therapeutics Share Price & Price History

^$0.31

▲ +0.0495 (18.94%)

As of 04/11/2025 05:00 PM ET

Days: 30 | 90 | 365

Mersana Therapeutics Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
1/16/2025	Anna Protopapas	Director	Sell	8,637	$0.58	$5,009.46	168,041
1/16/2025	Ashish Mandelia	CAO	Sell	3,554	$0.58	$2,061.32	57,519
1/16/2025	Martin H Jr. Huber	CEO	Sell	4,514	$0.58	$2,618.12	122,875
1/16/2025	Timothy B. Lowinger	SVP	Sell	8,048	$0.58	$4,667.84	257,673
1/14/2025	Anna Protopapas	Director	Sell	11,534	$0.66	$7,612.44	144,869
1/14/2025	Ashish Mandelia	CAO	Sell	1,007	$0.66	$664.62	49,396
1/14/2025	Timothy B. Lowinger	SVP	Sell	3,483	$0.66	$2,298.78	242,932
10/28/2024	Mohan Bala	SVP	Sell	1,884	$1.90	$3,579.60	54,731
10/3/2024	Alejandra Carvajal	SVP	Sell	5,598	$1.96	$10,972.08	63,716
10/2/2024	Ashish Mandelia	CAO	Sell	4,855	$2.00	$9,710.00	51,118
10/2/2024	Brian Deschuytner	CFO	Sell	8,089	$2.00	$16,178.00	100,422
9/12/2024	Martin H Jr. Huber	CEO	Sell	50,423	$1.76	$88,744.48	116,327
1/16/2024	Anna Protopapas	Director	Sell	29,399	$2.71	$79,671.29	125,153
1/16/2024	Ashish Mandelia	CAO	Sell	5,025	$2.71	$13,617.75	23,328
1/16/2024	Brian Deschuytner	CFO	Sell	9,327	$2.71	$25,276.17	54,511
1/16/2024	Tushar Misra	SVP	Sell	3,357	$2.71	$9,097.47	17,966
10/26/2023	Mohan Bala	SVP	Sell	1,912	$1.13	$2,160.56	8,733
8/17/2023	Tushar Misra	SVP	Sell	1,908	$1.18	$2,251.44	11,507
4/27/2023	Alejandra Carvajal	SVP	Sell	3,944	$3.89	$15,342.16	20,326
1/17/2023	Anna Protopapas	CEO	Sell	17,346	$5.74	$99,566.04	48,733
1/17/2023	Arvin Yang	SVP	Sell	2,209	$5.74	$12,679.66	30,821
1/17/2023	Ashish Mandelia	VP	Sell	3,575	$5.74	$20,520.50	13,619
1/17/2023	Brian Deschuytner	CFO	Sell	5,131	$5.74	$29,451.94	32,781
1/17/2023	Tushar Misra	CMO	Sell	458	$5.74	$2,628.92	5,930
8/17/2022	Tushar Misra	Insider	Sell	1,879	$7.10	$13,340.90	4,371
6/2/2022	Andrew A. F. Hack	Director	Buy	14,760	$3.20	$47,232.00	8,663,673
5/31/2022	Andrew A. F. Hack	Director	Buy	80,759	$3.28	$264,889.52	8,648,913
5/25/2022	Andrew A. F. Hack	Director	Buy	90,155	$3.17	$285,791.35	8,493,154
5/23/2022	Andrew A. F. Hack	Director	Buy	15,599	$3.35	$52,256.65	8,302,999
5/20/2022	Andrew A. F. Hack	Director	Buy	100,000	$3.46	$346,000.00	8,287,400
5/18/2022	Andrew A. F. Hack	Director	Buy	211,268	$3.35	$707,747.80	8,087,400
5/16/2022	Andrew A. F. Hack	Director	Buy	135,292	$3.10	$419,405.20	7,872,692
4/26/2022	Alejandra Carvajal	Insider	Sell	3,948	$3.69	$14,568.12	9,302

See Full Table

SEC Filings (Institutional Ownership Changes) for Mersana Therapeutics (NASDAQ:MRSN)

93.92% of Mersana Therapeutics stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Mersana Therapeutics Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
3/24/2025	Wellington Management Group LLP	576,148	$0.82M	0.0%	-6.8%	0.462%
2/20/2025	Mackenzie Financial Corp	91,956	$0.13M	0.0%	N/A	0.074%
2/17/2025	VR Adviser LLC	10,257,790	$14.67M	1.0%	-9.4%	8.304%
2/17/2025	Two Sigma Investments LP	210,876	$0.30M	0.0%	-29.8%	0.171%
2/17/2025	Two Sigma Advisers LP	448,000	$0.64M	0.0%	-8.0%	0.363%
2/17/2025	Sphera Funds Management LTD.	690,272	$0.99M	0.2%	N/A	0.559%
2/17/2025	Nuveen Asset Management LLC	232,223	$0.33M	0.0%	+53.6%	0.188%
2/17/2025	OCONNOR A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS LLC	410,029	$0.59M	0.0%	-28.1%	0.332%
2/17/2025	Millennium Management LLC	795,973	$1.14M	0.0%	+206.4%	0.644%
2/17/2025	Jacobs Levy Equity Management Inc.	1,111,998	$1.59M	0.0%	+12.0%	0.900%
2/17/2025	D. E. Shaw & Co. Inc.	544,463	$0.78M	0.0%	-46.7%	0.441%
2/17/2025	Deutsche Bank AG	839,724	$1.20M	0.0%	-47.4%	0.680%
2/17/2025	Cubist Systematic Strategies LLC	45,296	$65K	0.0%	N/A	0.037%
2/17/2025	Bank of America Corp DE	953,952	$1.36M	0.0%	-3.6%	0.772%
2/17/2025	BNP Paribas Financial Markets	361,147	$0.52M	0.0%	+52.3%	0.292%
2/17/2025	683 Capital Management LLC	900,000	$1.29M	0.1%	+392.4%	0.729%
2/17/2025	Acuta Capital Partners LLC	1,120,500	$1.60M	1.6%	-6.6%	0.907%
2/14/2025	Boxer Capital Management LLC	2,635,000	$3.77M	0.3%	N/A	2.133%
2/14/2025	Novo Holdings A S	4,250,000	$6.08M	0.4%	N/A	3.440%
2/14/2025	Schonfeld Strategic Advisors LLC	2,119,586	$3.03M	0.0%	-4.7%	1.716%
2/14/2025	Oxford Asset Management LLP	65,386	$94K	0.0%	N/A	0.053%
2/14/2025	Susquehanna Fundamental Investments LLC	91,852	$0.13M	0.0%	N/A	0.074%
2/14/2025	Price T Rowe Associates Inc. MD	62,093	$89K	0.0%	-37.3%	0.050%
2/14/2025	Rock Springs Capital Management LP	3,431,684	$4.91M	0.2%	+12.6%	2.778%
2/14/2025	MetLife Investment Management LLC	73,150	$0.11M	0.0%	+115.7%	0.059%
2/13/2025	XTX Topco Ltd	63,530	$91K	0.0%	-81.7%	0.051%
2/13/2025	Barclays PLC	182,711	$0.26M	0.0%	-63.1%	0.148%
2/13/2025	Renaissance Technologies LLC	606,285	$0.87M	0.0%	+23.0%	0.491%
2/13/2025	Wells Fargo & Company MN	67,483	$97K	0.0%	+40.3%	0.055%
2/12/2025	ExodusPoint Capital Management LP	194,153	$0.28M	0.0%	N/A	0.157%
2/12/2025	Geode Capital Management LLC	2,442,250	$3.49M	0.0%	+1.2%	1.977%
2/12/2025	Wellington Management Group LLP	576,148	$0.82M	0.0%	-6.8%	0.466%
2/11/2025	Sei Investments Co.	69,527	$99K	0.0%	N/A	0.056%
2/4/2025	Los Angeles Capital Management LLC	159,760	$0.23M	0.0%	-15.8%	0.129%
2/4/2025	Bank of New York Mellon Corp	346,189	$0.50M	0.0%	-7.0%	0.280%
1/24/2025	China Universal Asset Management Co. Ltd.	26,194	$37K	0.0%	N/A	0.021%
1/17/2025	SG Americas Securities LLC	112,291	$0.16M	0.0%	+28.7%	0.091%
1/15/2025	Avanza Fonder AB	56,298	$81K	0.0%	N/A	0.046%
12/26/2024	JPMorgan Chase & Co.	2,351,359	$4.44M	0.0%	+18.9%	1.903%
12/13/2024	Exome Asset Management LLC	1,178,570	$2.23M	1.5%	N/A	0.954%
11/19/2024	Barclays PLC	494,516	$0.93M	0.0%	+32.7%	0.400%
11/16/2024	Geode Capital Management LLC	2,413,215	$4.56M	0.0%	-3.2%	1.967%
11/15/2024	Barclays PLC	494,516	$0.93M	0.0%	+32.7%	0.403%
11/15/2024	XTX Topco Ltd	347,255	$0.66M	0.0%	+186.0%	0.283%
11/15/2024	Wellington Management Group LLP	618,305	$1.17M	0.0%	+16.0%	0.504%
11/15/2024	State Street Corp	2,725,394	$5.15M	0.0%	+1.6%	2.222%
11/15/2024	Quarry LP	30,000	$57K	0.0%	N/A	0.024%
11/15/2024	Jacobs Levy Equity Management Inc.	993,046	$1.88M	0.0%	+104.5%	0.809%
11/15/2024	Atom Investors LP	24,661	$47K	0.0%	-93.3%	0.020%
11/14/2024	Verition Fund Management LLC	1,303,249	$2.46M	0.0%	+11,695.2%	1.062%
11/14/2024	Acuta Capital Partners LLC	1,200,000	$2.27M	1.8%	-27.8%	0.978%
11/14/2024	MetLife Investment Management LLC	33,916	$64K	0.0%	-48.3%	0.028%
11/13/2024	BNP Paribas Financial Markets	237,198	$0.45M	0.0%	-29.4%	0.193%
11/13/2024	FMR LLC	277,740	$0.53M	0.0%	+13.2%	0.226%
11/13/2024	Dynamic Technology Lab Private Ltd	18,095	$34K	0.0%	N/A	0.015%
11/12/2024	HealthInvest Partners AB	538,621	$1.02M	0.5%	+191.3%	0.439%
11/9/2024	Intech Investment Management LLC	27,342	$52K	0.0%	N/A	0.022%
11/5/2024	GSA Capital Partners LLP	271,774	$0.51M	0.0%	+368.9%	0.222%
11/4/2024	Los Angeles Capital Management LLC	189,660	$0.36M	0.0%	+8.1%	0.155%
10/28/2024	US Bancorp DE	16,178	$31K	0.0%	N/A	0.013%
10/10/2024	Exchange Traded Concepts LLC	85,006	$0.16M	0.0%	+95.8%	0.069%
10/3/2024	SG Americas Securities LLC	87,233	$0.17M	0.0%	-37.1%	0.071%
8/16/2024	Algert Global LLC	44,655	$90K	0.0%	N/A	0.036%
8/15/2024	Susquehanna Fundamental Investments LLC	308,691	$0.62M	0.0%	+31.9%	0.252%
8/15/2024	Affinity Asset Advisors LLC	767,000	$1.54M	0.2%	-23.3%	0.627%
8/14/2024	Squarepoint Ops LLC	252,804	$0.51M	0.0%	N/A	0.207%
8/14/2024	Marshall Wace LLP	176,029	$0.35M	0.0%	+358.0%	0.144%
8/12/2024	XTX Topco Ltd	121,432	$0.24M	0.0%	+262.1%	0.099%
8/9/2024	Renaissance Technologies LLC	1,448,219	$2.91M	0.0%	+1.4%	1.184%
8/9/2024	Dimensional Fund Advisors LP	13,703	$28K	0.0%	-56.1%	0.011%
8/8/2024	Federated Hermes Inc.	185,507	$0.37M	0.0%	+105,301.7%	0.152%
8/7/2024	ClariVest Asset Management LLC	500,498	$1.01M	0.1%	+6.1%	0.409%
8/6/2024	Acadian Asset Management LLC	71,506	$0.14M	0.0%	-84.8%	0.058%
8/6/2024	Los Angeles Capital Management LLC	175,420	$0.35M	0.0%	-11.0%	0.143%
7/29/2024	Principal Financial Group Inc.	18,278	$37K	0.0%	-42.5%	0.015%
7/26/2024	Bank of New York Mellon Corp	452,829	$0.91M	0.0%	+19.6%	0.370%
7/12/2024	SG Americas Securities LLC	138,722	$0.28M	0.0%	+313.9%	0.113%
5/17/2024	Walleye Trading LLC	31,526	$0.14M	0.0%	N/A	0.026%
5/16/2024	California State Teachers Retirement System	11,145	$50K	0.0%	-38.9%	0.009%
5/16/2024	Jacobs Levy Equity Management Inc.	809,879	$3.63M	0.0%	-13.0%	0.662%
5/15/2024	Price T Rowe Associates Inc. MD	79,932	$0.36M	0.0%	+6.6%	0.065%
5/10/2024	Acadian Asset Management LLC	468,923	$2.10M	0.0%	+166.7%	0.387%
5/10/2024	Vanguard Group Inc.	6,274,370	$28.11M	0.0%	+0.6%	5.172%
5/8/2024	Russell Investments Group Ltd.	9,453	$42K	0.0%	+976.7%	0.008%
5/7/2024	Susquehanna Fundamental Investments LLC	234,116	$1.05M	0.0%	N/A	0.193%
5/7/2024	ClariVest Asset Management LLC	471,848	$2.11M	0.2%	N/A	0.389%
5/7/2024	SG Americas Securities LLC	33,513	$0.15M	0.0%	-14.6%	0.028%
5/1/2024	BNP Paribas Financial Markets	80,735	$0.36M	0.0%	+90.0%	0.067%
5/1/2024	Mirae Asset Global Investments Co. Ltd.	54,127	$0.23M	0.0%	N/A	0.045%
4/23/2024	Hunter Perkins Capital Management LLC	15,000	$67K	0.0%	-41.6%	0.012%
2/20/2024	Readystate Asset Management LP	295,038	$0.68M	0.0%	N/A	0.244%
2/13/2024	Tower Research Capital LLC TRC	24,533	$57K	0.0%	-49.2%	0.020%
2/13/2024	Affinity Asset Advisors LLC	1,000,000	$2.32M	0.4%	-64.9%	0.828%
2/8/2024	Foundations Investment Advisors LLC	102,000	$0.24M	0.0%	N/A	0.085%
2/5/2024	Victory Capital Management Inc.	12,732	$30K	0.0%	N/A	0.011%
1/25/2024	Nisa Investment Advisors LLC	17,643	$41K	0.0%	+479.8%	0.015%
1/18/2024	Hunter Perkins Capital Management LLC	25,700	$60K	0.0%	-30.5%	0.021%
1/12/2024	SG Americas Securities LLC	39,226	$91K	0.0%	-15.9%	0.033%
1/8/2024	Harbor Capital Advisors Inc.	47,472	$0.11M	0.0%	+28.1%	0.039%
1/5/2024	Exchange Traded Concepts LLC	98,729	$0.23M	0.0%	+34.0%	0.082%

Data available starting January 2016

See Full Table

Mersana Therapeutics, Inc., a clinical stage biopharmaceutical company, develops antibody drug conjugates (ADC) for cancer patients with unmet needs. The company develops XMT-1660, a B7-H4-targeted Dolasynthen ADC candidate; and XMT-2056, an immunosynthen ADC. It has research and development collaborations with Janssen Biotech, Inc., Ares Trading S.A., Merck KGaA, and Asana BioSciences, LLC for the development of ADC product candidates. The company was formerly known as Nanopharma Corp. and changed its name to Mersana Therapeutics, Inc. in November 2005. Mersana Therapeutics, Inc. was incorporated in 2001 and is headquartered in Cambridge, Massachusetts.

Today's Range

Now: $0.31

$0.26

$0.31

50 Day Range

MA: $0.48

$0.26

$0.75

52 Week Range

Now: $0.31

$0.26

$3.96

Volume

2,617,237 shs

Average Volume

2,464,908 shs

Market Capitalization

$38.75 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.68

Who are the company insiders with the largest holdings of Mersana Therapeutics?: Mersana Therapeutics' top insider investors include:
Timothy B Lowinger (SVP)
Anna Protopapas (Director)
Martin H Jr Huber (CEO)
Brian Deschuytner (CFO)
Alejandra Carvajal (SVP)
Ashish Mandelia (CAO)
Mohan Bala (SVP)
Tushar Misra (SVP)
Learn More about top insider investors at Mersana Therapeutics.

MRSN Insider Trading

Mersana Therapeutics Insider Trading History Chart

Mersana Therapeutics Share Price & Price History

Mersana Therapeutics Insider Trading History

SEC Filings (Institutional Ownership Changes) for Mersana Therapeutics (NASDAQ:MRSN)

Institutional Buying and Selling by Quarter

Mersana Therapeutics Institutional Trading History

Today's Range

50 Day Range

52 Week Range

Volume

Average Volume

Market Capitalization

P/E Ratio

Dividend Yield

Beta

Who are the company insiders with the largest holdings of Mersana Therapeutics?