TECOGEN INC. 8-KCurrent Reports (8-K / ad hoc)

Financial Statements

Item 8.01. Other Events. On October 14, 2026, Tecogen Inc., a Delaware corporation (the “Company”), issued the attached press release regarding a customer testimonial from Cloudsmart, Inc., a Cloud and AI data center in Connecticut. The press release describes Cloudsmart’s use of the Company’s InVerde cogeneration system at Cloudsmart’s data center to reduce energy costs. The press release highlights Cloudsmart’s satisfaction with the service provided by the Company and the performance of the Company’s cogeneration equipment in a demanding data center environment. The Company’s press release dated October 14, 2026, and Cloudsmart’s customer testimonial are attached hereto as Exhibits 99.1 and 99.2. Section 9 - Financial Statements and Exhibit s