Shaff Eric D.'s Form 4 filing
Seres Therapeutics, Inc. (MCRB) · filed Nov 18, 2025
- Accession no.
- 0001193125-25-286235
- Filed
- Nov 18, 2025
- Trade date
- Nov 15, 2025
- Filing delay
- 3 days
- Rule 10b5-1 plan
- Checked
This filing lists 3 non-derivative transactions and 2 derivative transactions. Open-market sales total $3.75K. It was filed 3 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Shaff Eric D.CIK 0001643734 | Director |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +390 | – | – | 10,999 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +331 | – | – | 11,330 | Direct | |
| Nov 15, 2025 | Common Stock | SSaleDisposed | −217 | $17.30 | −$3,754.1 | 11,113 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −390 | $0.00 | $0 | 1,954 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −331 | $0.00 | $0 | 2,989 | Direct |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.