SHAFF ERIC D. (See Remarks) sold 2.1% of their position (259.00 shares) of SERES THERAPEUTICS, INC. on the open market
Open‑market sale worth $2.0K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 5/19/2026ACC: 0001193125-26-230733
Officer· See Remarks
Since Jan 2019
-259.00
Net shares
Net seller
$2.0K
Total sold
1
Open market trades
0B · 1S
4
Total transactions
722.00 acquired · 981.00 disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+722.00
Price / share
—
Trade value
—
% of position
6.2%
5/15/2026
11.58K→12.30K
Common Stock
Direct
Shares
−259.00
Price / share
$7.53
Trade value
$1.95K
% of position
2.1%
5/18/2026
12.30K→12.04K
Total
Net shares
+463.00
Net value
-$1.95K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 5/15/2026 | M · Option Exercise | +722.00 | — | — | 6.2% | 11.58K | 12.30K |
| Common Stock Direct | 5/18/2026 | S · Sale | −259.00 | $7.53 | $1.95K | 2.1% | 12.30K | 12.04K |
| Total | +463.00 | -$1.95K | ||||||
Derivative Transactions2
Restricted Stock Units
Direct
Converts to
Common Stock
391.00 shares
Shares
−391.00
Strike price
Held after
1.17K
Exercisable
—
5/15/2026
Restricted Stock Units
Direct
Converts to
Common Stock
331.00 shares
Shares
−331.00
Strike price
Held after
2.33K
Exercisable
—
5/15/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Units Direct | Common Stock391.00 shares | 5/15/2026 | M · Option Exercise | −391.00 | — | 1.17K | |
| Restricted Stock Units Direct | Common Stock331.00 shares | 5/15/2026 | M · Option Exercise | −331.00 | — | 2.33K |