Summary
Updated Aug 31, 2026
Matthew R. Henn is President and Chief Scientific Officer of Seres Therapeutics, Inc. (MCRB). 10 SEC Form 4 filings on record going back to 2024, most recently on 18 August 2026. Most recent open-market trade: sold $369 of MCRB on 18 August 2026. Lifetime open-market sales: $28K.
Recent Transactions
17Every recent SEC Form 4 transaction Matthew R. Henn has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Matthew R. Henn go back to 2024: 10 primary Form 4 filings, an average of 3.3 per year. 25 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Matthew R. Henn files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Teresa L. Young - $19K of MCRB open-market activity in the last 12 months
- Eric D. Shaff - $9K of MCRB open-market activity in the last 12 months
- Thomas Desrosier - $3K of MCRB open-market activity in the last 12 months
- Kelly Brady - $735 of MCRB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Matthew R. Henn?
Matthew R. Henn is a corporate insider, tracked as President and Chief Scientific Officer of Seres Therapeutics, Inc. (MCRB). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Matthew R. Henn submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Matthew R. Henn been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($28K) across all tracked filings.
Where can I see all of Matthew R. Henn's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow Matthew R. Henn and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial