Eric D. Shaff
CEO and President at Seres Therapeutics Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Seres Therapeutics Inc., 3 years.
Seres Therapeutics Inc.
Director · CEO and President
Chief executive roles
Seres Therapeutics Inc.
· CEO and President
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 15, 2024 | Seres Therapeutics Inc. | Option exercise | +7,812 | — | — |
| May 15, 2024 | Seres Therapeutics Inc. | Open-market sale | −2,435 | $0.94 | $2,289 |
| Feb 16, 2024 | Seres Therapeutics Inc. | Open-market sale | −11,549 | $1.08 | $12,473 |
| Feb 15, 2024 | Seres Therapeutics Inc. | Option exercise | +31,250 | — | — |
| Oct 30, 2023 | Seres Therapeutics Inc. | Open-market sale | −8,552 | $1.35 | $11,545 |
| Oct 27, 2023 | Seres Therapeutics Inc. | Option exercise | +27,838 | — | — |
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