Tecogen (TGEN) Institutional Ownership $7.35 +0.50 (+7.30%) As of 09/15/2025 04:10 PM Eastern Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartEarningsHeadlinesOwnershipSEC FilingsShort InterestBuy This Stock Institutional Ownership Changes (13F Filings) for Tecogen (OTCMKTS:TGEN)Number ofInstitutional Buyers(last 12 months)9TotalInstitutional Inflows(last 12 months)$9.16MNumber ofInstitutional Sellers(last 12 months)0 Get TGEN Insider Trade Alerts Want to know when executives and insiders are buying or selling Tecogen stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. Skip Chart & View Institutional Buying and Selling Data TGEN Institutional Buying and Selling by Quarter Tecogen Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 Gendell Jeffrey L41,700$284K0.0%N/A0.165% 8/13/2025 Gamco Investors INC. ET AL42,000$286K0.0%N/A0.166% 8/13/2025 Corsair Capital Management L.P.67,760$461K0.1%N/A0.268% 8/12/2025 Heron Bay Capital Management37,167$253K0.0%N/A0.147% 8/8/2025 Geode Capital Management LLC142,850$971K0.0%N/A0.565% 7/24/2025 Shikiar Asset Management Inc.22,000$150K0.0%N/A0.087% 7/22/2025 Herald Investment Management Ltd321,078$2.19M0.3%N/A1.271% 7/18/2025 PFG Investments LLC62,523$425K0.0%N/A0.247% 7/14/2025 Clear Harbor Asset Management LLC610,000$4.15M0.3%N/A2.414% (Data available from 1/1/2016 forward) TGEN Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of TGEN shares? During the previous two years, 9 institutional investors and hedge funds held shares of Tecogen. The most heavily invested institutionals were Clear Harbor Asset Management LLC ($4.15M), Herald Investment Management Ltd ($2.19M), Geode Capital Management LLC ($971K), Corsair Capital Management L.P. ($461K), PFG Investments LLC ($425K), Gamco Investors INC. ET AL ($286K), and Gendell Jeffrey L ($284K).Learn more on Tecogen's institutional investors. Which institutional investors have been buying Tecogen's stock? Of the 9 institutional investors that purchased Tecogen's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Clear Harbor Asset Management LLC ($610K), Herald Investment Management Ltd ($321.08K), Geode Capital Management LLC ($142.85K), Corsair Capital Management L.P. ($67.76K), PFG Investments LLC ($62.52K), Gamco Investors INC. ET AL ($42K), and Gendell Jeffrey L ($41.70K). How much institutional buying is happening at Tecogen? Institutional investors have bought a total of 1,347,078 shares in the last 24 months. This purchase volume represents approximately $9.16M in transactions. 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