SHAFF ERIC D. (See Remarks) sold 2.1% of their position (263.00 shares) of SERES THERAPEUTICS, INC. on the open market
Open‑market sale worth $1.2K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 8/18/2026ACC: 0001193125-26-355722
Officer· See Remarks
Since Jan 2019
-263.00
Net shares
Net seller
$1.2K
Total sold
1
Open market trades
0B · 1S
4
Total transactions
722.00 acquired · 985.00 disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+722.00
Price / share
—
Trade value
—
% of position
6.0%
8/15/2026
12.04K→12.76K
Common Stock
Direct
Shares
−263.00
Price / share
$4.55
Trade value
$1.20K
% of position
2.1%
8/17/2026
12.76K→12.50K
Total
Net shares
+459.00
Net value
-$1.20K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/15/2026 | M · Option Exercise | +722.00 | — | — | 6.0% | 12.04K | 12.76K |
| Common Stock Direct | 8/17/2026 | S · Sale | −263.00 | $4.55 | $1.20K | 2.1% | 12.76K | 12.50K |
| Total | +459.00 | -$1.20K | ||||||
Derivative Transactions2
Restricted Stock Units
Direct
Converts to
Common Stock
390.00 shares
Shares
−390.00
Strike price
Held after
783.00
Exercisable
—
8/15/2026
Restricted Stock Units
Direct
Converts to
Common Stock
332.00 shares
Shares
−332.00
Strike price
Held after
1.99K
Exercisable
—
8/15/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Units Direct | Common Stock390.00 shares | 8/15/2026 | M · Option Exercise | −390.00 | — | 783.00 | |
| Restricted Stock Units Direct | Common Stock332.00 shares | 8/15/2026 | M · Option Exercise | −332.00 | — | 1.99K |