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
- Insiders sold $52.7K over the last 12 months (12 sales). No open-market buys.
- 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 $52.7K (12 sales). Last close $6.63 on Jun 4, 2026.
Recent MCRB insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| May 18, 2026 | Eric D. Shaff (Insider) | Sold | $2K |
| May 18, 2026 | Thomas DesRosier (Insider) | Sold | $595 |
| May 18, 2026 | Matthew R Henn (Insider) | Sold | $580 |
| May 18, 2026 | Kelly Brady (Insider) | Sold | $444 |
| May 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| May 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| May 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| May 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| May 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| May 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| May 15, 2026 | Eric D. Shaff (Insider) | Bought (not open market) | — |
| May 15, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| May 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| May 15, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| May 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| May 15, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Mar 4, 2026 | Kelly Brady (Insider) | Bought (not open market) | — |
| Mar 4, 2026 | Thomas DesRosier (Insider) | Bought (not open market) | — |
| Mar 4, 2026 | Matthew R Henn (Insider) | Bought (not open market) | — |
| Mar 4, 2026 | Marella Thorell (Insider) | Bought (not open market) | — |
| Mar 4, 2026 | Richard N Kender (Insider) | Bought (not open market) | — |
| Feb 15, 2026 | Eric D. Shaff (Insider) | Sold | $2.2K |
| Feb 15, 2026 | Matthew R Henn (Insider) | Sold | $754 |
| Feb 15, 2026 | Thomas DesRosier (Insider) | Sold | $661 |
| Feb 15, 2026 | Teresa L. Young (Insider) | Sold | $635 |
Who's trading MCRB
- Kelly Brady, Insider: sold $444 (1 sale), last May 18, 2026
- Eric D. Shaff, CEO: sold $7.9K (3 sales), last May 18, 2026
- Matthew R Henn, Insider: sold $23.1K (3 sales), last May 18, 2026
- Thomas DesRosier, C-suite exec: sold $2.6K (3 sales), last May 18, 2026
- Richard N Kender, Insider: other filings, last Mar 4, 2026
- Marella Thorell, Insider: other filings, last Mar 4, 2026
- Teresa L. Young, Insider: sold $18.7K (2 sales), last Feb 15, 2026
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