HENN MATTHEW R

PrivateCIK: 1767321
Location

CAMBRIDGE, MA

HENN MATTHEW R (Chief Scientific Officer) sold 4.5% of their position (3.95K shares) of SERES THERAPEUTICS, INC. on the open market

Open‑market sale worth $3.2K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderHENN MATTHEW RCIK 1767321
IssuerSERES THERAPEUTICS, INC.CIK 1609809
Officer· Chief Scientific Officer
Since Feb 2019
-3.95K
Net shares
Net seller
$3.2K
Total sold
1
Open market trades
0B · 1S
5
Total transactions
10.63K acquired · 14.58K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+2.81K

Price / share

Trade value

% of position

3.6%
2/15/2025
77.77K80.58K

Common Stock

Direct
M · Option Exercise

Shares

+7.81K

Price / share

Trade value

% of position

9.7%
2/15/2025
80.58K88.40K

Common Stock

Direct
S · Sale

Shares

3.95K

Price / share

$0.81

Trade value

$3.20K

% of position

4.5%
2/18/2025
88.40K84.44K
Total

Net shares

+6.67K

Net value

-$3.20K

Derivative Transactions2

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

2.81K shares

Shares

2.81K

Strike price

Held after

22.50K

Exercisable

2/15/2025

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

7.81K shares

Shares

7.81K

Strike price

Held after

23.44K

Exercisable

2/15/2025
HENN MATTHEW R — Insider Transaction (Form 4) Filed Feb 19, 2025 | Finecho