TGEN · Tecogen Inc.

The extension of the Advisory Agreement with Mr. John N. Hatsopoulos — Tecogen’s co-founder and long-standing strategic advisor — signals continued reliance on his expertise amid ongoing operational and technological initiatives, including the company’s focus on ultra-clean natural gas engines and combined heat and power systems. While the filing does not disclose compensation terms, duration, or scope modifications, the multi-year extension through March 2028 suggests stability in governance and advisory oversight. The use of Unanimous Written Consent indicates alignment among directors and efficient decision-making, consistent with prior board practices. As an advisory arrangement — not an employment or executive officer role — this event does not trigger disclosure under Item 5.02; however, given Mr. Hatsopoulos’s historical influence on Tecogen’s technology roadmap and capital strategy, the extension carries moderate strategic weight for investors assessing leadership continuity and technical stewardship. No financial obligations, performance conditions, or termination triggers are disclosed in the provided text.