MCRB Insider Trading

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Insider Trading History
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Insider Ownership Percentage: 4.70%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $43,792.60

Seres Therapeutics Insider Trading History Chart

Seres Therapeutics Share Price & Price History

^$17.90

▲ +0.46 (2.64%)

As of 12/4/2025 05:00 PM ET

Days: 30 | 90 | 365

Seres Therapeutics Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
11/15/2025	Eric D. Shaff	Director	Sell	217	$17.30	$3,754.10	11,113
11/15/2025	Matthew R. Henn	Insider	Sell	1,257	$17.30	$21,746.10	7,527
11/15/2025	Thomas J. DesRosier	Insider	Sell	76	$17.30	$1,314.80	7,623
2/18/2025	Eric D. Shaff	CEO	Sell	636	$16.20	$10,303.20	9,601
2/18/2025	Matthew R. Henn	Insider	Sell	197	$16.20	$3,191.40	4,222
2/18/2025	Thomas J. DesRosier	EVP	Sell	215	$16.20	$3,483.00	7,122
11/18/2024	Eric D. Shaff	CEO	Sell	125	$10.80	$1,350.00	8,519
11/18/2024	Moltke Lisa Von	Insider	Sell	48	$10.80	$518.40	1,620
11/18/2024	Thomas J. DesRosier	EVP	Sell	43	$10.80	$464.40	6,759
10/28/2024	Eric D. Shaff	CEO	Sell	437	$13.80	$6,030.60	8,254
10/28/2024	Moltke Lisa Von	Insider	Sell	216	$13.80	$2,980.80	1,521
10/28/2024	Thomas J. DesRosier	EVP	Sell	212	$13.80	$2,925.60	6,670
8/16/2024	Eric D. Shaff	CEO	Sell	125	$16.80	$2,100.00	7,299
8/16/2024	Moltke Lisa Von	Insider	Sell	48	$16.80	$806.40	1,050
8/16/2024	Thomas J. DesRosier	EVP	Sell	43	$16.80	$722.40	6,208
8/5/2024	Teresa L. Young	Insider	Sell	1,224	$21.60	$26,438.40	3,908
5/15/2024	Eric D. Shaff	CEO	Sell	121	$18.80	$2,274.80	7,034
5/15/2024	Moltke Lisa Von	Insider	Sell	46	$18.80	$864.80	950
5/15/2024	Thomas J. DesRosier	EVP	Sell	42	$18.80	$789.60	6,119
2/16/2024	David Arkowitz	CFO	Sell	196	$21.60	$4,233.60	9,122
2/16/2024	Eric D. Shaff	CEO	Sell	577	$21.60	$12,463.20	6,766
2/16/2024	Teresa L. Young	Insider	Sell	168	$21.60	$3,628.80	785
10/30/2023	David Arkowitz	CFO	Sell	203	$27.00	$5,481.00	8,787
10/30/2023	Eric D. Shaff	CEO	Sell	427	$27.00	$11,529.00	5,781
10/30/2023	Paula Cloghessy	Insider	Sell	145	$27.00	$3,915.00	2,284
10/30/2023	Thomas J. DesRosier	EVP	Sell	207	$27.00	$5,589.00	5,694
4/28/2023	David S Ege	Insider	Sell	351	$103.80	$36,433.80	2,984

SEC Filings (Institutional Ownership Changes) for Seres Therapeutics (NASDAQ:MCRB)

59.34% of Seres 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

Seres Therapeutics Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
11/17/2025	Bank of America Corp DE	5,343	$0.10M	0.0%	+2,772.6%	0.059%
11/14/2025	Schonfeld Strategic Advisors LLC	28,942	$0.56M	0.0%	N/A	0.320%
11/7/2025	Vanguard Group Inc.	311,889	$6M	0.0%	+6.8%	3.564%
10/15/2025	Vontobel Holding Ltd.	98,511	$1.90M	0.0%	+22.6%	1.126%
8/15/2025	Bridgeway Capital Management LLC	12,500	$0.14M	0.0%	-95.0%	0.143%
8/13/2025	Marshall Wace LLP	91,405	$1.02M	0.0%	N/A	1.045%
8/12/2025	XTX Topco Ltd	22,417	$0.25M	0.0%	N/A	0.256%
8/8/2025	Geode Capital Management LLC	91,602	$1.02M	0.0%	-94.3%	1.049%
8/8/2025	SBI Securities Co. Ltd.	3,482	$39K	0.0%	-95.0%	0.040%
7/23/2025	Vontobel Holding Ltd.	80,325	$0.89M	0.0%	-92.6%	0.920%
6/27/2025	Goldman Sachs Group Inc.	74,629	$52K	0.0%	+40.9%	0.855%
5/16/2025	Goldman Sachs Group Inc.	74,629	$52K	0.0%	+40.9%	0.855%
5/12/2025	Invesco Ltd.	136,572	$96K	0.0%	+193.2%	1.564%
5/9/2025	Charles Schwab Investment Management Inc.	834,107	$0.58M	0.0%	-3.7%	9.568%
5/2/2025	SBI Securities Co. Ltd.	69,664	$49K	0.0%	+221.8%	0.799%
4/28/2025	Vontobel Holding Ltd.	1,085,966	$0.76M	0.0%	+15.7%	12.457%
2/17/2025	Millennium Management LLC	1,810,719	$1.51M	0.0%	+77.2%	1.061%
2/17/2025	Cantor Fitzgerald L. P.	95,740	$80K	0.0%	-65.9%	0.056%
2/14/2025	Jane Street Group LLC	58,736	$49K	0.0%	+181.4%	0.034%
2/14/2025	Schonfeld Strategic Advisors LLC	100,700	$84K	0.0%	-76.8%	0.059%
2/14/2025	Northern Trust Corp	262,683	$0.22M	0.0%	+20.4%	0.154%
2/12/2025	Geode Capital Management LLC	1,510,432	$1.26M	0.0%	+8.8%	0.885%
2/11/2025	LPL Financial LLC	94,787	$79K	0.0%	-22.4%	0.056%
2/10/2025	Avantax Advisory Services Inc.	45,179	$38K	0.0%	+170.9%	0.026%
2/6/2025	Charles Schwab Investment Management Inc.	865,825	$0.72M	0.0%	+15.6%	0.507%
1/30/2025	Vontobel Holding Ltd.	938,295	$0.78M	0.0%	+137.6%	0.550%
1/17/2025	Janney Montgomery Scott LLC	48,500	$40K	0.0%	-29.8%	0.028%
11/20/2024	Virtu Financial LLC	58,791	$56K	0.0%	+44.8%	0.034%
11/16/2024	Geode Capital Management LLC	1,388,639	$1.31M	0.0%	+22.5%	0.816%
11/15/2024	State Street Corp	383,248	$0.36M	0.0%	+12.9%	0.225%
11/15/2024	Point72 Asia Singapore Pte. Ltd.	44,972	$43K	0.0%	-64.8%	0.026%
11/14/2024	Providence Wealth Advisors LLC	98,500	$93K	0.1%	+29.2%	0.058%
11/13/2024	FMR LLC	22,857,260	$21.63M	0.0%	+0.6%	13.430%
11/12/2024	Charles Schwab Investment Management Inc.	748,718	$0.71M	0.0%	+42.4%	0.440%
10/16/2024	Vontobel Holding Ltd.	394,826	$0.37M	0.0%	N/A	0.261%
9/16/2024	Point72 DIFC Ltd	87,754	$64K	0.0%	N/A	0.058%
9/16/2024	Point72 Asia Singapore Pte. Ltd.	127,634	$92K	0.0%	N/A	0.084%
8/15/2024	Point72 Asia Singapore Pte. Ltd.	127,634	$92K	0.0%	N/A	0.084%
8/14/2024	Point72 DIFC Ltd	87,754	$64K	0.0%	N/A	0.058%
8/9/2024	Providence Wealth Advisors LLC	76,250	$58K	0.0%	+49.5%	0.050%
8/1/2024	Rhumbline Advisers	55,112	$40K	0.0%	-61.0%	0.036%
5/20/2024	Virtu Financial LLC	94,510	$73K	0.0%	N/A	0.062%
5/15/2024	Price T Rowe Associates Inc. MD	298,111	$0.23M	0.0%	-18.0%	0.197%
5/10/2024	Vanguard Group Inc.	6,734,821	$5.21M	0.0%	+12.1%	4.460%
5/1/2024	BNP Paribas Financial Markets	46,549	$36K	0.0%	-19.8%	0.031%
5/1/2024	Mirae Asset Global Investments Co. Ltd.	50,102	$39K	0.0%	N/A	0.033%
2/14/2024	Pennant Investors LP	292,300	$0.41M	0.1%	N/A	0.226%
2/13/2024	Tower Research Capital LLC TRC	38,091	$53K	0.0%	+668.6%	0.029%
2/1/2024	Handelsbanken Fonder AB	1,100,000	$1.54M	0.0%	+10.0%	0.851%
1/24/2024	Clear Creek Financial Management LLC	26,950	$38K	0.0%	-47.6%	0.021%
1/12/2024	SG Americas Securities LLC	52,080	$73K	0.0%	N/A	0.040%
12/7/2023	Hudson Bay Capital Management LP	1,999,800	$4.76M	0.0%	+127.3%	1.547%
11/22/2023	Graham Capital Management L.P.	206,838	$0.49M	0.0%	+731.3%	0.160%
11/14/2023	Corton Capital Inc.	23,245	$55K	0.0%	-64.7%	0.018%
11/14/2023	Profund Advisors LLC	155,798	$0.37M	0.0%	+11.9%	0.121%
11/13/2023	Federated Hermes Inc.	8,981,717	$21.38M	0.1%	-21.2%	6.949%
11/13/2023	Dark Forest Capital Management LP	117,498	$0.28M	0.0%	N/A	0.091%
11/13/2023	Aigen Investment Management LP	75,241	$0.18M	0.0%	+577.1%	0.058%
11/13/2023	FMR LLC	19,230,692	$45.77M	0.0%	+0.2%	14.878%
11/13/2023	Rafferty Asset Management LLC	936,382	$2.23M	0.0%	+21.1%	0.724%
11/7/2023	Quantbot Technologies LP	50,400	$0.12M	0.0%	N/A	0.039%
11/7/2023	Barclays PLC	461,209	$1.10M	0.0%	+24.3%	0.360%
10/30/2023	Arete Wealth Advisors LLC	24,900	$59K	0.0%	+99.2%	0.019%
10/23/2023	Commonwealth Equity Services LLC	11,040	$26K	0.0%	N/A	0.009%
10/19/2023	Simplicity Solutions LLC	11,294	$27K	0.0%	N/A	0.009%
10/11/2023	Vontobel Holding Ltd.	17,000	$40K	0.0%	-52.6%	0.013%
8/14/2023	Great Point Partners LLC	938,067	$4.49M	0.9%	N/A	0.732%
8/14/2023	UniSuper Management Pty Ltd	415,292	$1.99M	0.0%	N/A	0.324%
8/14/2023	Parallax Volatility Advisers L.P.	134,901	$0.65M	0.0%	N/A	0.105%
8/14/2023	Graham Capital Management L.P.	24,881	$0.12M	0.0%	N/A	0.019%
8/11/2023	Natixis	99,000	$0.47M	0.0%	N/A	0.077%
8/11/2023	E Fund Management Co. Ltd.	41,581	$0.20M	0.0%	+206.1%	0.032%
8/11/2023	ExodusPoint Capital Management LP	594,895	$2.85M	0.0%	N/A	0.464%
8/10/2023	Profund Advisors LLC	139,249	$0.67M	0.0%	+210.4%	0.109%
8/9/2023	BNP Paribas Arbitrage SNC	154,663	$0.74M	0.0%	+61.9%	0.121%
8/7/2023	Principal Financial Group Inc.	45,205	$0.22M	0.0%	+21.5%	0.035%
8/4/2023	American International Group Inc.	46,820	$0.22M	0.0%	+37.7%	0.037%
8/3/2023	Jennison Associates LLC	1,392,356	$6.67M	0.0%	+109.5%	1.089%
8/2/2023	Handelsbanken Fonder AB	1,000,000	$4.79M	0.0%	+25.0%	0.782%
7/31/2023	LPL Financial LLC	115,058	$0.55M	0.0%	+20.3%	0.090%
7/31/2023	Alpha DNA Investment Management LLC	138,536	$0.66M	0.2%	N/A	0.108%
7/28/2023	Mach 1 Financial Group LLC	94,961	$0.46M	0.1%	N/A	0.074%
7/26/2023	Janney Montgomery Scott LLC	90,285	$0.43M	0.0%	-11.7%	0.071%
7/25/2023	Raymond James & Associates	10,052	$48K	0.0%	N/A	0.008%
7/24/2023	Vontobel Holding Ltd.	35,865	$0.17M	0.0%	+74.6%	0.028%
7/21/2023	Creative Planning	17,304	$83K	0.0%	N/A	0.014%
7/19/2023	Teacher Retirement System of Texas	27,360	$0.13M	0.0%	-10.9%	0.021%
7/18/2023	Diversified Trust Co	10,000	$48K	0.0%	N/A	0.008%
7/17/2023	Clear Creek Financial Management LLC	54,200	$0.26M	0.0%	N/A	0.042%
7/14/2023	Aries Wealth Management	18,000	$86K	0.0%	+50.0%	0.014%
7/13/2023	Cambridge Investment Research Advisors Inc.	44,844	$0.22M	0.0%	N/A	0.035%
7/10/2023	AE Wealth Management LLC	95,188	$0.46M	0.0%	N/A	0.074%
7/7/2023	Auour Investments LLC	17,000	$81K	0.0%	N/A	0.013%
5/16/2023	Avoro Capital Advisors LLC	1,295,000	$7.34M	0.1%	N/A	1.013%
5/15/2023	Atom Investors LP	90,388	$0.51M	0.3%	-5.4%	0.071%
5/12/2023	Profund Advisors LLC	44,859	$0.25M	0.0%	N/A	0.035%
5/11/2023	PFG Investments LLC	20,500	$0.12M	0.0%	N/A	0.016%
5/11/2023	FMR LLC	18,911,458	$107.23M	0.0%	+1.2%	14.794%
5/11/2023	Knott David M Jr	315,000	$1.79M	0.7%	+57.4%	0.246%
5/11/2023	E Fund Management Co. Ltd.	13,585	$77K	0.0%	-18.5%	0.011%

Data available starting January 2016

Seres Therapeutics, Inc., a microbiome therapeutics company, develop microbiome therapeutics to treat the modulation of the colonic microbiome. It develops a novel class of biological drugs that are designed to treat by modulating the microbiome to restore health by repairing the function of a disrupted microbiome to a non-disease state. The company's lead product candidate is VOWST, an oral microbiome therapeutic that has completed Phase III clinical trial for the treatment of recurrent Clostridioides difficile infection. Its product pipeline also includes SER-155, an investigational oral fermented microbiome therapeutic which is in Phase 1b clinical trials for the treatment of gastrointestinal infections, bacteremia, and graft versus host disease in immunocompromised patients including patients receiving allogeneic hematopoietic stem cell transplantation. In addition, the company engages in the development of SER-287 which is in Phase 2b and SER-301 that is in Phase 1b to treat ulcerative colitis. Further, it has license Agreement with NHSc Rx License GmbH for the therapeutic products based on the microbiome technology, which includes VOWST product candidate, which is developed for the treatment of CDI and recurrent CDI; and collaboration license agreement with Société des Produits Nestlé S.A. (Nestlé) for the development and commercialization of certain product candidates for the treatment and management of CDI and inflammatory bowel disease including UC and Crohn's disease. The company was formerly known as Seres Health, Inc. and changed its name to Seres Therapeutics, Inc. in May 2015. Seres Therapeutics, Inc. was incorporated in 2010 and is headquartered in Cambridge, Massachusetts.

Today's Range

Now: $17.90

$16.80

$17.90

50 Day Range

MA: $18.13

$12.70

$28.63

52 Week Range

Now: $17.90

$6.53

$29.98

Volume

115,995 shs

Average Volume

315,839 shs

Market Capitalization

$162.00 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.18

Who are the company insiders with the largest holdings of Seres Therapeutics?: Seres Therapeutics' top insider shareholders include:
Eric D Shaff (Director)
Eric D Shaff (CEO)
David Arkowitz (CFO)
Thomas Desrosier (Insider)
Matthew R Henn (Insider)
Thomas Desrosier (EVP)
Teresa L Young (Insider)
Moltke Lisa Von (Insider)
Learn More about top insider investors at Seres Therapeutics.
Who are the major institutional investors of Seres Therapeutics?: Seres Therapeutics' top institutional investors include:
Vanguard Group Inc. — 3.56%
Vontobel Holding Ltd. — 1.13%
Susquehanna International Group LLP — 0.00%
Schonfeld Strategic Advisors LLC — 0.32%
Citadel Advisors LLC — 0.00%
Bank of America Corp DE — 0.06%
Learn More about top institutional investors of Seres Therapeutics stock.
Which major investors are selling Seres Therapeutics stock?: During the last quarter, MCRB stock was sold by these institutional investors:
Group One Trading LLC
During the previous year, company insiders that have sold Seres Therapeutics company stock include:
Eric D Shaff (Director)
Eric D Shaff (CEO)
David Arkowitz (CFO)
Thomas Desrosier (Insider)
Matthew R Henn (Insider)
Learn More investors selling Seres Therapeutics stock.
Which major investors are buying Seres Therapeutics stock?: In the previous quarter, MCRB stock was bought by institutional investors including:
Susquehanna International Group LLP
Schonfeld Strategic Advisors LLC
Citadel Advisors LLC
Vanguard Group Inc.
Vontobel Holding Ltd.
Bank of America Corp DE
Belvedere Trading LLC
National Bank of Canada FI