On March 29, 2018, Mr. John Hatsopoulos resigned as Co-Chief Executive Officer of Tecogen Inc., making Mr. Benjamin Locke the sole Chief Executive Officer of the company. Mr. Hatsopoulos will continue to serve as a Director of the Company through the end of his current term. As previously agreed with the Company, for a period of three years following his resignation as Co-Chief Executive Officer of the Company, Mr. Hatsopoulos will continue to advise the Company's Board of Directors and Chief Executive Officer regarding financing and investor relations matters.