Abinand Rangesh - 24 Jul 2025 Form 4 Insider Report for TECOGEN INC. (TGEN)

Role: Chief Executive Officer, Director, Chief Financial Officer
Signature: /s/ Abinand Rangesh
Issuer symbol: TGEN
Transactions as of: 24 Jul 2025
Net transactions value: +$301,627
Form type: 4
Filing time: 28 Jul 2025, 11:04:32 UTC
Previous filing: 27 Sep 2023
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rangesh Abinand	Chief Executive Officer, Director, Chief Financial Officer	45 FIRST AVE, WALTHAM	/s/ Abinand Rangesh	28 Jul 2025	0001917503

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TGEN	Common Stock	Award	$0	+53,892	+523%	$0.000000	64,193	24 Jul 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TGEN	Stock Option (Right to Buy)	Award	$201,026	+24,075	+8.9%	$8.35	294,075	24 Jul 2025	Common Stock	24,075	$8.35	Direct	F2
transaction	TGEN	Stock Option (Right to Buy)	Award	$100,601	+12,048	+4.1%	$8.35	306,123	24 Jul 2025	Common Stock	12,048	$8.35	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted Stock Award, vests 25% per year
F2	Vests 25% per year