Seres Therapeutics, Inc (MCRB) insider trading
Every open-market stock purchase and sale by Seres Therapeutics, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Eric D. Shaff (Insider) and 3 others sold $2.2K in the last 90 days.
- Last insider buy: Nutritional Health LTP Fund General Partner LLC (10% owner), $18.4M, 4 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $54.9K (16 sales). Last close $2.30 on Oct 21, 2026.
Recent MCRB insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Aug 17, 2026 | Eric D. Shaff (Insider) | Sold | $1.2K |
| Aug 17, 2026 | Thomas DesRosier (Insider) | Sold | $373 |
| Aug 17, 2026 | Matthew R Henn (Insider) | Sold | $369 |
| Aug 17, 2026 | Kelly Brady (Insider) | Sold | $291 |
| Aug 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| Aug 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Robert L. Rosiello (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Kurt Graves (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Richard N Kender (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Stephen Berenson (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Marella Thorell (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Claire Fraser (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Willard H Dere (Insider) | Bought (not open market) | — |
| Jul 8, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
Who's trading MCRB
- Kelly Brady, Insider: sold $735 (2 sales), last Aug 17, 2026
- Thomas DesRosier, C-suite exec: sold $2.9K (4 sales), last Aug 17, 2026
- Eric D. Shaff, CEO: sold $9.1K (4 sales), last Aug 17, 2026
- Matthew R Henn, Insider: sold $23.4K (4 sales), last Aug 17, 2026
- Richard N Kender, Insider: other filings, last Jul 8, 2026
- Stephen Berenson, Insider: other filings, last Jul 8, 2026
- Willard H Dere, Insider: other filings, last Jul 8, 2026
- Dennis A Ausiello, Insider: other filings, last Jul 8, 2026
- Robert L. Rosiello, Insider: other filings, last Jul 8, 2026
- Marella Thorell, Insider: other filings, last Jul 8, 2026
- Claire Fraser, Insider: other filings, last Jul 8, 2026
- Kurt Graves, Insider: other filings, last Jul 8, 2026
- Teresa L. Young, Insider: sold $18.7K (2 sales), last Feb 15, 2026
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