MCRB Exercise Disclosure
Shaff Eric D. · SEC Form 4 · Filed Aug 18, 2026
Exercise
Calculated transaction value
$0
Shaff Eric D. Director
MCRB
Seres Therapeutics
MCRB
Transaction date
Aug 15, 2026
Public filing date
Aug 18, 2026
Filing lag
Filed 3 days later
MCRB daily price context
Close on/before transaction
$4.54
Aug 14, 2026
Close before public filing
$4.51
Aug 17, 2026
Return since public filing
-0.44%
Through Sep 18, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Derivative
- Security
- Restricted Stock Units on Common Stock
- Quantity / price
- 332 shares @ $0
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0001193125-26-355722
Filing cohort
Transactions in this filing
Showing 4 of 4
Trades
4
Issuers
1
Estimated value
$1.2K
Buys / sales
0 / 1
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Seres Therapeutics, Inc. MCRB | Sale | Aug 17, 2026 | $1.2K |
| Seres Therapeutics, Inc. MCRB | Exercise | Aug 15, 2026 | Not reported |
| Seres Therapeutics, Inc. MCRB | Exercise | Aug 15, 2026 | $0 |
| Seres Therapeutics, Inc. MCRB Current | Exercise | Aug 15, 2026 | $0 |