HATSOPOULOS JOHN

PrivateCIK: 1274775
Location

N. BILLERICA, MA

HATSOPOULOS JOHN exercised options at TECOGEN INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderHATSOPOULOS JOHNCIK 1274775
IssuerTECOGEN INC.CIK 1537435
Director
Since Mar 2022
0.00
Net shares
Net seller
$44.0K
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
50K acquired · 50K disposed
Non-Derivative Transactions1

Common Stock

Direct
M · Option Exercise

Shares

+50K

Price / share

$0.88

Trade value

$44K

% of position

5.1%
3/20/2026
988.95K1.04M
Total

Net shares

+50K

Net value

$44K

Derivative Transactions1

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

50K shares

Shares

50K

Strike price

0.88

Held after

0.00

Exercisable

3/20/2026
HATSOPOULOS JOHN — Insider Transaction (Form 4) Filed Mar 23, 2026 | Finecho