CIK 0001609809 · Non-accelerated filer<br>Smaller reporting company
Seres Therapeutics, Inc.
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- MCRB
- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 274326290
- Phone
- 617 945 9626
- Business address
- 200 SIDNEY STREET, CAMBRIDGE, MA, 02139
- Former names
- Seres Therapeutics, Inc., Seres Health, Inc.
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $2,230
- in 4 filings, $2K under 10b5-1 plans
Net −$2,230. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-07-08 | Henn Matthew R See Remarks | Grant or award · Stock Option (right to buy) | +25,000 | 25,000 | ||
| 2026-07-08 | Thorell Marella See Remarks | Grant or award · Stock Option (right to buy) | +7,500 | 7,500 | ||
| 2026-07-08 | Fraser Claire Director | Grant or award · Stock Option (right to buy) | +6,500 | 6,500 | ||
| 2026-07-08 | Dere Willard H Director | Grant or award · Stock Option (right to buy) | +6,500 | 6,500 | ||
| 2026-07-08 | DesRosier Thomas See Remarks | Grant or award · Stock Option (right to buy) | +7,500 | 7,500 | ||
| 2026-07-08 | Ausiello Dennis A Director | Grant or award · Stock Option (right to buy) | +6,500 | 6,500 | ||
| 2026-07-08 | Shaff Eric D. Director | Grant or award · Stock Option (right to buy) | +6,500 | 6,500 | ||
| 2026-07-08 | Brady Kelly See Remarks | Grant or award · Stock Option (right to buy) | +18,750 | 18,750 | ||
| 2026-07-01 | Berenson Stephen Director | Grant or award · Stock Option (right to buy) | +7,508 | 7,508 | ||
| 2026-07-01 | Rosiello Robert L. Director | Grant or award · Stock Option (right to buy) | +7,508 | 7,508 | ||
| 2026-07-01 | Ausiello Dennis A Director | Grant or award · Stock Option (right to buy) | +7,508 | 7,508 | ||
| 2026-05-18 | Shaff Eric D. Director | Sale 10b5-1 | −259 | $7.53 | $2K | 12,040 |
| 2026-05-18 | Brady Kelly See Remarks | Sale | −59 | $7.53 | $444 | 8,562 |
| 2026-05-18 | DesRosier Thomas See Remarks | Sale 10b5-1 | −79 | $7.53 | $595 | 7,954 |
| 2026-05-18 | Henn Matthew R See Remarks | Sale 10b5-1 | −77 | $7.53 | $580 | 7,838 |
| 2026-05-15 | Shaff Eric D. Director | Option exercise 10b5-1 | +722 | 12,299 | ||
| 2026-05-15 | Shaff Eric D. Director | Option exercise · Restricted Stock Units 10b5-1 | −391 | 1,173 | ||
| 2026-05-15 | Shaff Eric D. Director | Option exercise · Restricted Stock Units 10b5-1 | −331 | 2,325 | ||
| 2026-05-15 | Brady Kelly See Remarks | Option exercise | +180 | 8,621 | ||
| 2026-05-15 | Brady Kelly See Remarks | Option exercise · Restricted Stock Units | −89 | 269 |
Page 2 of 13 · 254 trades