Seres Therapeutics, Inc. (MCRB) Insider Trading Activity

NASDAQ$9.52
Market Cap
$86.12M
Sector
Healthcare
Industry
Biotechnology
Rank in Sector
671 of 883
Rank in Industry
391 of 506

MCRB Insider Trading Activity

MCRB Median Price and Trade Amounts History Chart

Statistics of Insider Transactions

Amount of Insider Buys and Sells

Buys
$0
0
0
Sells
$59,357
16
100

Related Transactions

DesRosier ThomasChief Legal Officer and EVP
0
$0
4
$3,816
$-3,816
Shaff Eric D.CEO and President
0
$0
4
$11,162
$-11,162
Young Teresa L.See Remarks
0
$0
4
$20,103
$-20,103
Henn Matthew RSee Remarks
0
$0
4
$24,276
$-24,276

About Seres Therapeutics, Inc.

Seres Therapeutics, Inc., a microbiome therapeutics platform company, engages in developing bacterial consortia that are designed to functionally interact with host cells and tissues to treat disease. The company's lead product candidate is the SER-109, an oral microbiome therapeutic candidate that has completed Phase III clinical trial for the treatment of clostridium difficile infection (CDI). It is also developing SER-155, a cultivated bacteria microbiome drug, which is Phase Ib clinical trial to reduce incidences of gastrointestinal infections, bloodstream infections, and graft versus host diseases in immunocompromised patients receiving allogeneic hematopoietic stem cell transplantation and solid organ transplants. In addition, the company engages in the development of SER-287 and SER-301 that are in Phase Ib to treat ulcerative colitis; SER-401 for patients with metastatic melanoma; and SER-262 to treat Clostridioides difficile infection. It has license and collaboration agreements with Nestec Ltd. and Memorial Sloan Kettering Cancer Center. 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.

Insider Activity of Seres Therapeutics, Inc.

Over the last 12 months, insiders at Seres Therapeutics, Inc. have bought $0 and sold $59,357 worth of Seres Therapeutics, Inc. stock.

On average, over the past 5 years, insiders at Seres Therapeutics, Inc. have bought $9.18M and sold $76,050 worth of stock each year.

There was no buying activity among insiders over the last 12 months.

The last purchase of 2,912,748 shares for transaction amount of $9.18M was made by AFEYAN NOUBAR () on 2022‑07‑05.

List of Insider Buy and Sell Transactions, Seres Therapeutics, Inc.

2026-02-15SaleShaff Eric D.director
259
0.0029%
$8.47
$2,194
-2.83%
2026-02-15SaleYoung Teresa L.See Remarks
75
0.0008%
$8.47
$635
-2.83%
2026-02-15SaleDesRosier ThomasSee Remarks
78
0.0009%
$8.47
$661
-2.83%
2026-02-15SaleHenn Matthew RSee Remarks
89
0.001%
$8.47
$754
-2.83%
2025-11-15SaleShaff Eric D.director
217
0.0026%
$17.30
$3,754
+42.83%
2025-11-15SaleYoung Teresa L.See Remarks
1,042
0.0123%
$17.30
$18,027
+42.83%
2025-11-15SaleDesRosier ThomasSee Remarks
76
0.0009%
$17.30
$1,315
+42.83%
2025-11-15SaleHenn Matthew RSee Remarks
1,257
0.0149%
$17.30
$21,746
+42.83%
2025-08-18SaleShaff Eric D.director
217
0.0023%
$16.65
$3,613
-6.61%
2025-08-18SaleDesRosier ThomasSee Remarks
76
0.0008%
$16.65
$1,265
-6.61%
2025-08-18SaleYoung Teresa L.See Remarks
59
0.0006%
$16.65
$982
-6.61%
2025-08-18SaleHenn Matthew RSee Remarks
73
0.0008%
$16.65
$1,215
-6.61%
2025-05-16SaleShaff Eric D.CEO and President
220
0.0025%
$7.28
$1,602
+104.02%
2025-05-16SaleYoung Teresa L.See Remarks
63
0.0007%
$7.28
$459
+104.02%
2025-05-16SaleHenn Matthew RSee Remarks
77
0.0009%
$7.28
$561
+104.02%
2025-05-15SaleDesRosier ThomasChief Legal Officer and EVP
79
0.0009%
$7.28
$575
+105.13%
2025-02-18SaleShaff Eric D.CEO and President
12,726
0.0073%
$0.81
$10,314
-10.47%
2025-02-18SaleDesRosier ThomasChief Legal Officer and EVP
4,300
0.0025%
$0.81
$3,485
-10.47%
2025-02-18SaleYoung Teresa L.See Remarks
3,338
0.0019%
$0.81
$2,704
-10.47%
2025-02-18SaleHenn Matthew R.See Remarks
3,953
0.0023%
$0.81
$3,204
-10.47%
Total: 134
*Gray background shows transactions not older than one year

Insider Historical Profitability

40%
Shaff Eric D.director
11577
0.128%
$110,213.04019
Young Teresa L.See Remarks
8557
0.0946%
$81,462.64012
DesRosier ThomasSee Remarks
7789
0.0861%
$74,151.28013
Henn Matthew RSee Remarks
7677
0.0849%
$73,085.04012
AFEYAN NOUBAR
5875711
64.95%
$55.94M21
+40%
Pomerantz RogerPresident and CEO
213976
2.3653%
$2.04M031
Arkowitz DavidChief Financial Officer
182442
2.0167%
$1.74M02
COOK DAVID NSee Remarks
139935
1.5468%
$1.33M06
Ege David S.See Remarks
77575
0.8575%
$738,514.0006
Aunins John G.Chief Technology Officer & EVP
75250
0.8318%
$716,380.00018
Cloghessy PaulaSee Remarks
45684
0.505%
$434,911.6801
von Moltke LisaSee Remarks
39875
0.4408%
$379,610.0007
Chapman MarcusSee Remarks
8600
0.0951%
$81,872.0001
Trucksis MicheleSee Remarks
4893
0.0541%
$46,581.3603
*Gray background shows insiders who have made transactions during last year

Historical Insider Profitability vs. Competitors

$5,413,611
159
6.12%
$96.47M
$30,470,407
140
20.39%
$98.55M
$155,630,608
79
-24.53%
$97.81M
$17,525,882
60
5.22%
$97.15M
$4,898,715
46
40.75%
$90.03M
$77,146,704
43
13.28%
$96.84M
$909,129
37
42.19%
$79.57M
$140,595,157
34
17.93%
$99.3M
$33,128,160
18
-13.64%
$81.51M
$20,234,041
17
2.09%
$75.3M
$11,267,080
15
-22.36%
$76.53M
$17,741,707
13
30.23%
$84.06M
$280,338
8
34.18%
$96.54M
$32,684,649
8
-15.84%
$71.62M
$106,599,960
6
-7.63%
$81.41M
$110,013
5
6.58%
$78.76M
$401,951
4
57.41%
$70.43M
$112,382,168
4
-48.89%
$99.79M
Seres Therapeutics, Inc.
(MCRB)
$19,175,155
2
40.00%
$86.12M

MCRB Institutional Investors: Active Positions

Increased Positions23+69.7%366,489+17.22%
Decreased Positions13-39.39%53,025-2.49%
New Positions9New317,221New
Sold Out Positions6Sold Out31,960Sold Out
Total Postitions43+30.3%2M+14.73%

MCRB Ownership Change vs Market

Institutional Investor Ownership

Top Shareholders
Top Buyers
Top Sellers
New Shareholders
Sold-Out Shareholders
Active Shareholders
Flagship Pioneering Inc.$17,511.0012.84%1.16M00%2025-09-30
Vanguard Group Inc$4,725.003.47%311,889+19,793+6.78%2025-09-30
Marshall Wace, Llp$1,903.001.4%125,600+34,195+37.41%2025-09-30
Blackrock, Inc.$1,546.001.13%102,060+709+0.7%2025-09-30
Vontobel Holding Ltd.$1,492.001.1%98,511+18,186+22.64%2025-09-30
Geode Capital Management, Llc$1,287.000.94%84,982-6,620-7.23%2025-09-30
Charles Schwab Investment Management Inc$476.000.35%31,403-3,473-9.96%2025-09-30
Citadel Advisors Llc$468.000.34%30,885+30,885New2025-09-30
State Street Corp$450.000.33%29,731+2,900+10.81%2025-09-30
Schonfeld Strategic Advisors Llc$438.000.32%28,942+28,942New2025-09-30

Financial Ratios

Summary
Comparison with Competitors

Price to Earnings

Price/Earnings to Growth

Price to Sales

Price to Book

Price/Free Cash Flow

Analyst Recommendations

Analyst Price Targets

Prismo does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.
Information is provided 'as-is' and solely for informational purposes and is not advice. Prismo does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.