NYSEMKT: TGEN
Tecogen Inc Stock Ownership - Who owns Tecogen?

Insider buying vs selling

Have Tecogen Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Ahmed GhoniemDirector2026-04-2412,723$0.79
$10.00kBuy
Susan B. HirschDirector2026-04-135,000$3.73
$18.65kBuy
Earl 1. LewisDirector2026-03-275,000$2.52
$12.60kBuy
Susan B. HirschDirector2026-03-2710,000$2.54
$25.40kBuy
Earl 1. LewisDirector2026-03-265,000$2.88
$14.41kBuy
John Kimball Whiting IvGeneral Counsel Secretary2026-03-2310,000$2.38
$23.80kBuy
John HatsopoulosDirector2026-03-2050,000$0.88
$44.00kBuy
Abinand RangeshChief Executive Officer2026-03-203,000$2.30
$6.89kBuy
Roger P. DeschenesCAO2026-03-2010,000$2.23
$22.30kBuy

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Net Insider Buy/Sell (L12M) Ownership

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TGEN Shareholders

What type of owners hold Tecogen Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ann Marie Brown Pacheco12.26%3,700,864$6.37MInsider
George N. Hatsopoulos11.94%3,605,541$6.20MInsider
Yiannis Monovoukas8.67%2,617,905$4.50MInsider
Earl R. Lewis5.42%1,636,006$2.81MInsider
John Hatsopoulos3.69%1,114,513$1.92MInsider
Earl 1. Lewis3.35%1,011,006$1.74MInsider
Susan B. Hirsch0.88%265,416$456.52kInsider
Abinand Rangesh0.80%241,274$414.99kInsider
Charlest Maxwell0.74%224,590$386.29kInsider
Roger P. Deschenes0.27%81,975$141.00kInsider

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TGEN vs Electrical Equipment & Part Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TGEN0.03%49.07%Net Buying
OESX0.01%99.99%Net BuyingNet Buying
NVX0.00%8.12%Net Buying
STI0.01%99.99%Net SellingNet Selling
RFIL0.05%41.76%Net SellingNet Selling

Tecogen Stock Ownership FAQ

Who owns Tecogen?

Tecogen (NYSEMKT: TGEN) is owned by 0.03% institutional shareholders, 49.07% Tecogen insiders, and 50.90% retail investors. Ann Marie Brown Pacheco is the largest individual Tecogen shareholder, owning 3.70M shares representing 12.26% of the company. Ann Marie Brown Pacheco's Tecogen shares are currently valued at $6.37M.

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