$MCRB insider trading
Over the last 12 months, Seres Therapeutics insiders reported no purchases and 12 sales totaling $51K across SEC Form 4 filings. 100% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $51K 12 events
- Events · 12m
- 12 Form 4 filings, grouped
- Insiders · 12m
- 5 distinct reporters
- 10b5-1 share
- 100% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | Brady KellySee Remarks · O | ▼ Sale | 64 | $4.55 | $291 | -0.7% | plan |
| Aug 17, 2026 | Shaff Eric D.D | ▼ Sale | 263 | $4.55 | $1K | -2.1% | plan |
| Aug 17, 2026 | Henn Matthew RSee Remarks · O | ▼ Sale | 81 | $4.55 | $369 | -1% | plan |
| Aug 17, 2026 | DesRosier ThomasSee Remarks · O | ▼ Sale | 82 | $4.55 | $373 | -1% | plan |
| Feb 15, 2026 | Young Teresa L.See Remarks · O | ▼ Sale | 75 | $8.47 | $635 | -0.9% | plan |
| Feb 15, 2026 | Shaff Eric D.D | ▼ Sale | 259 | $8.47 | $2K | -2.2% | plan |
| Feb 15, 2026 | DesRosier ThomasSee Remarks · O | ▼ Sale | 78 | $8.47 | $661 | -1% | plan |
| Feb 15, 2026 | Henn Matthew RSee Remarks · O | ▼ Sale | 89 | $8.47 | $754 | -1.1% | plan |
| Nov 15, 2025 | DesRosier ThomasSee Remarks · O | ▼ Sale | 76 | $17.3 | $1K | -1% | plan |
| Nov 15, 2025 | Young Teresa L.See Remarks · O | ▼ Sale | 1,042 | $17.3 | $18K | -11% | plan |
| Nov 15, 2025 | Shaff Eric D.D | ▼ Sale | 217 | $17.3 | $4K | -1.9% | plan |
| Nov 15, 2025 | Henn Matthew RSee Remarks · O | ▼ Sale | 1,257 | $17.3 | $22K | -14.3% | plan |
| Aug 18, 2025 | DesRosier ThomasSee Remarks · O | ▼ Sale | 76 | $16.65 | $1K | -1% | plan |
| Aug 18, 2025 | Young Teresa L.See Remarks · O | ▼ Sale | 59 | $16.65 | $982 | -1.1% | plan |
| Aug 18, 2025 | Shaff Eric D.D | ▼ Sale | 217 | $16.65 | $4K | -2% | plan |
| Aug 18, 2025 | Henn Matthew RSee Remarks · O | ▼ Sale | 73 | $16.65 | $1K | -1.6% | plan |
Every $MCRB filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Seres Therapeutics filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $MCRB feed.