SHAFF ERIC D.

PrivateCIK: 1643734
Location

CAMBRIDGE, MA

SHAFF ERIC D. (See Remarks) sold 6.2% of their position (12.73K shares) of SERES THERAPEUTICS, INC. on the open market

Open‑market sale worth $10.3K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderSHAFF ERIC D.CIK 1643734
IssuerSERES THERAPEUTICS, INC.CIK 1609809
Officer· See Remarks
Since Jan 2019
-12.73K
Net shares
Net seller
$10.3K
Total sold
1
Open market trades
0B · 1S
5
Total transactions
34.38K acquired · 47.10K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+7.81K

Price / share

Trade value

% of position

4.6%
2/15/2025
170.39K178.20K

Common Stock

Direct
M · Option Exercise

Shares

+26.56K

Price / share

Trade value

% of position

14.9%
2/15/2025
178.20K204.76K

Common Stock

Direct
S · Sale

Shares

12.73K

Price / share

$0.81

Trade value

$10.31K

% of position

6.2%
2/18/2025
204.76K192.04K
Total

Net shares

+21.65K

Net value

-$10.31K

Derivative Transactions2

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

7.81K shares

Shares

7.81K

Strike price

Held after

62.50K

Exercisable

2/15/2025

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

26.56K shares

Shares

26.56K

Strike price

Held after

79.69K

Exercisable

2/15/2025
SHAFF ERIC D. — Insider Transaction (Form 4) Filed Feb 19, 2025 | Finecho