How many insider trades does FilingIQ track for MCRB?

FilingIQ tracks 392 Form 4 insider transactions for MCRB (Seres Therapeutics, Inc.), covering filings from Jun 25, 2015 onwards. 21 of those were filed in the last 90 days.

Are MCRB insiders net buyers or net sellers?

Across the full Form 4 history for MCRB, 4 transactions (1%) were open-market purchases and 134 (34%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does MCRB insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is MCRB in?

Seres Therapeutics, Inc. (MCRB) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $73.82M.

MCRB insider trading

NasdaqGS Healthcare

Seres Therapeutics, Inc. — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

392

Last 90 days

Buys / sells

1% / 34%

Market cap

$73.82M

About Seres Therapeutics, Inc.

Seres Therapeutics, Inc., a clinical-stage company, focuses on developing biotherapeutics for serious diseases. The company develops SER-155, an investigational oral live biotherapeutic to decolonize gastrointestinal pathogens, enhance epithelial barrier integrity, and regulate immune response to prevent bacterial bloodstream infections, as well as other pathogen-associated negative clinical outcomes in patients undergoing allogeneic hematopoietic stem cell transplantation. Its other pipeline programs include SER-147, a live biotherapeutic composition to prevent bacterial bloodstream and spontaneous bacterial peritonitis infections in patients with metabolic disease, including chronic liver disease; and SER-287 and SER-301, which are in clinical trials for the treatment of mild-to-moderate ulcerative colitis. 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.

Company website: www.serestherapeutics.com

MCRB insider activity at a glance

FilingIQ has scored 392 insider transactions for MCRB since Jun 25, 2015. The most recent filing in our index is dated Mar 4, 2026.

Across the full history, 4 open-market purchases and 134 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on MCRB insider trades is 58.2/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live MCRB trades on FilingIQ Raw filings on SEC EDGAR

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Frequently asked

How many insider trades does FilingIQ track for MCRB?: FilingIQ tracks 392 Form 4 insider transactions for MCRB (Seres Therapeutics, Inc.), covering filings from Jun 25, 2015 onwards. 21 of those were filed in the last 90 days.
Are MCRB insiders net buyers or net sellers?: Across the full Form 4 history for MCRB, 4 transactions (1%) were open-market purchases and 134 (34%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does MCRB insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is MCRB in?: Seres Therapeutics, Inc. (MCRB) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $73.82M.

Methodology & sources

Every MCRB insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.