DESROSIER THOMAS

PrivateCIK: 1435744
Location

LEXINGTON, MA

DESROSIER THOMAS (See Remarks) sold 2.9% of their position (4.30K shares) of SERES THERAPEUTICS, INC. on the open market

Open‑market sale worth $3.5K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderDESROSIER THOMASCIK 1435744
IssuerSERES THERAPEUTICS, INC.CIK 1609809
Officer· See Remarks
Since Mar 2026
-4.30K
Net shares
Net seller
$3.5K
Total sold
1
Open market trades
0B · 1S
5
Total transactions
11.56K acquired · 15.86K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+2.66K

Price / share

Trade value

% of position

2.0%
2/15/2025
135.19K137.85K

Common Stock

Direct
M · Option Exercise

Shares

+8.91K

Price / share

Trade value

% of position

6.5%
2/15/2025
137.85K146.76K

Common Stock

Direct
S · Sale

Shares

4.30K

Price / share

$0.81

Trade value

$3.49K

% of position

2.9%
2/18/2025
146.76K142.46K
Total

Net shares

+7.26K

Net value

-$3.49K

Derivative Transactions2

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

2.66K shares

Shares

2.66K

Strike price

Held after

21.25K

Exercisable

2/15/2025

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

8.91K shares

Shares

8.91K

Strike price

Held after

26.72K

Exercisable

2/15/2025
DESROSIER THOMAS — Insider Transaction (Form 4) Filed Feb 19, 2025 | Finecho