Tecogen Inc.
    Insider Ownership

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    Current Insider Ownership

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    Hatsopoulos JohnDirector
    Common Stock
    Mar 20, 2026
    1,038,951
    3.47
    6,773,961
    Lewis EarlDirector
    Common Stock
    Mar 27, 2026
    1,011,006
    3.38
    6,591,759
    Lewis Earl RDirector
    Stock Option (Right to Buy)Stock Options (Right to Buy)
    Jul 24, 2025Jun 6, 2024
    366,250200,000
    1.220.67
    2,387,9501,304,000

    Insider Trading Trends

    Insider Transactions

    Voluntary Buys vs Sells

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    Historical Insider Trading (3-Years)

    10b5-1

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    Ghoniem AhmedCommon StockNoNoBuy
    ACQUIRE
    P
    0.79+12,72310,00012,723Apr 24, 2026
    Ghoniem AhmedStock Option (Right to Buy)NoNoExercise/Conversion
    DISPOSE
    M
    0.79-12,72310,0000Apr 24, 2026
    Hirsch Susan BCommon StockNoNoBuy
    ACQUIRE
    P
    3.73+5,00018,650265,416Apr 13, 2026