TECOGEN INC. — Director's Dealing 2022

May 6, 2022

SEC Form 3/A — Form 3/A

Issuer: TECOGEN INC. (TGEN)
CIK: 0001537435
Period of Report: 2022-03-11

Reporting Person: HATSOPOULOS JOHN (Director)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	239863	Direct
Common Stock	75562	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$3.93	2026-05-12	Common Stock (12723.0)		Direct

Footnotes

F1: Includes: (1) 44,012 shares held by Pat, Ltd. of which Mr. Hatsopoulos is a shareholder together with his wife Patricia Hatsopoulos, (2) 28,225 shares held by Mrs. Hatsopoulos, and (3) 3,325 shares held in an individual retirement account for Mrs. Hatsopoulos. Excludes, and Mr. Hatsopoulos disclaims beneficial ownership of, shares held by the following irrevocable trusts: (1) the John N. Hatsopoulos Trust 2007, of which Mr. Yiannis Monovoukas is the trustee, the John Hatsopoulos 1989 Family Trust, of which Mrs. Ann Marie Pacheco is the trustee, and (3) the Nia M. Hatsopoulos 2011 Irrevocable Trust of which Mrs. Ann Marie Pacheco is the trustee.

F2: Converted from options to acquire shares of American DG Energy Inc.; vested in connection with merger of American DG Energy Inc. with a subsidiary of Tecogen Inc.