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 |
|---|---|---|---|---|---|---|
| 2026-05-15 | Brady Kelly See Remarks | Option exercise · Restricted Stock Units | −91 | 639 | ||
| 2026-05-15 | DesRosier Thomas See Remarks | Option exercise 10b5-1 | +244 | 8,033 | ||
| 2026-05-15 | DesRosier Thomas See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −133 | 398 | ||
| 2026-05-15 | DesRosier Thomas See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −111 | 779 | ||
| 2026-05-15 | Henn Matthew R See Remarks | Option exercise 10b5-1 | +238 | 7,915 | ||
| 2026-05-15 | Henn Matthew R See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −141 | 422 | ||
| 2026-05-15 | Henn Matthew R See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −97 | 683 | ||
| 2026-03-04 | Brady Kelly See Remarks | Grant or award · Stock Option (right to buy) | +56,250 | 56,250 | ||
| 2026-03-04 | Kender Richard N See Remarks | Grant or award · Stock Option (right to buy) | +150,000 | 150,000 | ||
| 2026-03-04 | Henn Matthew R See Remarks | Grant or award · Stock Option (right to buy) | +75,000 | 75,000 | ||
| 2026-03-04 | Thorell Marella See Remarks | Grant or award · Stock Option (right to buy) | +22,500 | 22,500 | ||
| 2026-03-04 | DesRosier Thomas See Remarks | Grant or award · Stock Option (right to buy) | +22,500 | 22,500 | ||
| 2026-02-15 | Young Teresa L. See Remarks | Option exercise 10b5-1 | +231 | 8,632 | ||
| 2026-02-15 | Young Teresa L. See Remarks | Sale 10b5-1 | −75 | $8.47 | $635 | 8,557 |
| 2026-02-15 | Young Teresa L. See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −133 | 531 | ||
| 2026-02-15 | Young Teresa L. See Remarks | Option exercise · Restricted Stock Units 10b5-1 | −98 | 780 | ||
| 2026-02-15 | Shaff Eric D. Director | Option exercise 10b5-1 | +723 | 11,836 | ||
| 2026-02-15 | Shaff Eric D. Director | Sale 10b5-1 | −259 | $8.47 | $2K | 11,577 |
| 2026-02-15 | Shaff Eric D. Director | Option exercise · Restricted Stock Units 10b5-1 | −391 | 1,564 | ||
| 2026-02-15 | Shaff Eric D. Director | Option exercise · Restricted Stock Units 10b5-1 | −333 | 2,656 |
Page 3 of 13 · 254 trades