SHAFF ERIC D. (See Remarks) sold 1.9% of their position (217.00 shares) of SERES THERAPEUTICS, INC. on the open market
Open‑market sale worth $3.8K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 11/18/2025ACC: 0001193125-25-286235
Officer· See Remarks
Since Jan 2019
-217.00
Net shares
Net seller
$3.8K
Total sold
1
Open market trades
0B · 1S
5
Total transactions
721.00 acquired · 938.00 disposed
Non-Derivative Transactions3
Common Stock
Direct
Shares
+390.00
Price / share
—
Trade value
—
% of position
3.7%
11/15/2025
10.61K→11K
Common Stock
Direct
Shares
+331.00
Price / share
—
Trade value
—
% of position
3.0%
11/15/2025
11K→11.33K
Common Stock
Direct
Shares
−217.00
Price / share
$17.30
Trade value
$3.75K
% of position
1.9%
11/15/2025
11.33K→11.11K
Total
Net shares
+504.00
Net value
-$3.75K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 11/15/2025 | M · Option Exercise | +390.00 | — | — | 3.7% | 10.61K | 11K |
| Common Stock Direct | 11/15/2025 | M · Option Exercise | +331.00 | — | — | 3.0% | 11K | 11.33K |
| Common Stock Direct | 11/15/2025 | S · Sale | −217.00 | $17.30 | $3.75K | 1.9% | 11.33K | 11.11K |
| Total | +504.00 | -$3.75K | ||||||
Derivative Transactions2
Restricted Stock Units
Direct
Converts to
Common Stock
390.00 shares
Shares
−390.00
Strike price
Held after
1.95K
Exercisable
—
11/15/2025
Restricted Stock Units
Direct
Converts to
Common Stock
331.00 shares
Shares
−331.00
Strike price
Held after
2.99K
Exercisable
—
11/15/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Units Direct | Common Stock390.00 shares | 11/15/2025 | M · Option Exercise | −390.00 | — | 1.95K | |
| Restricted Stock Units Direct | Common Stock331.00 shares | 11/15/2025 | M · Option Exercise | −331.00 | — | 2.99K |