TECOGEN INC. — Director's Dealing 2025

Jul 14, 2025

SEC Form 4/A — Form 4/A

Issuer: TECOGEN INC. (TGEN)
CIK: 0001537435
Period of Report: 2025-06-03

Reporting Person: PANORA ROBERT A (COO and President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-03	Common Stock	S	26000	$4.69	Disposed	44000	Direct
2025-06-04	Common Stock	S	31000	$5	Disposed	13000	Direct
2025-06-16	Common Stock	M	12723	$0.786	Acquired	25723	Direct
2025-06-16	Common Stock	M	30000	$0.71	Acquired	55723	Direct
2025-06-16	Common Stock	M	52500	$1.10	Acquired	108223	Direct
2025-06-18	Common Stock	S	13000	$5.03	Disposed	95223	Direct
2025-06-23	Common Stock	S	31800	$6.36	Disposed	63423	Direct
2025-06-24	Common Stock	S	900	$6.86	Disposed	62523	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-06-16	Stock Option (Right to Buy)	$0.786	M	12723	Disposed	2026-05-12	Common Stock (12723)	Direct
2025-06-16	Stock Option (Right to Buy)	$0.71	M	30000	Disposed	2030-07-09	Common Stock (30000)	Direct
2025-06-16	Stock Option (Right to Buy)	$1.10	M	52500	Disposed	2032-01-21	Common Stock (52500)	Direct

Footnotes

F1: Share sales effected to cover tax liabilities and other obligations. The June 2025 share sales were reported to the company on July 11, 2025.

F2: Transaction code corrected

F3: 100,000 shares of the 200,000 option shares granted pursuant to Stock Option Agreement dated 7/9/2020 vested on 6/30/2022 upon achievement of Adjusted EBITDA performance milestone.