John Hatsopoulos

CIK: 0001274775

Transaction Breakdown

Open Market Buys (P)2 (66.7%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)1 (33.3%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

TGEN

TECOGEN INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (3 total)

TGEN
TECOGEN INC.
Mar 20, 2026
Exercise(M)
Direct
50K shares at avg. $0.88$44K
TGEN
TECOGEN INC.
Sep 27, 2024
Purchase(P)
Direct
10K shares at avg. $0.84$8K
TGEN
TECOGEN INC.
Sep 25, 2024
Purchase(P)
Direct
10K shares at avg. $0.86$9K

		Type	Shares	Price		Ownership
Mar 20, 2026	TGEN TECOGEN INC.	Exercise(M)	50,000	$0.88	$44,000	Direct
Sep 27, 2024	TGEN TECOGEN INC.	Purchase(P)	10,000	$0.84	$8,380	Direct
Sep 25, 2024	TGEN TECOGEN INC.	Purchase(P)	10,000	$0.86	$8,597	Direct

1-3 of 3 transactions

About Hatsopoulos John

Hatsopoulos John (SEC CIK 0001274775) files insider reports with the SEC as Director of TECOGEN INC. (TGEN).

Signal8 holds 3 ownership filings by Hatsopoulos John, all Form 4s, filed between Sep 25, 2024 and Mar 23, 2026. Those filings report 3 transactions, from Sep 25, 2024 to Mar 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hatsopoulos John's filings is in NORTH BILLERICA, MA.

Recent filings by Hatsopoulos John

Mar 20, 2026: Option exercise of TGEN shares (Form 4, code M).
Sep 27, 2024: Open-market purchase of TGEN shares (Form 4, code P).
Sep 25, 2024: Open-market purchase of TGEN shares (Form 4, code P).

Other insiders filing for TECOGEN INC. (TGEN)

Lafaille Stephen, VP of Business Development
Whiting John Kimball IV, General Counsel & Secretary
Panora Robert, COO and President
Deschenes Roger P., Chief Financial Officer
Rangesh Abinand, Chief Executive Officer
Hirsch Susan B, Director

How to read Form 4 transaction codes