CoverageForm 410-K10-Q8-K13D13G13F

Tecogen Inc.

TGENCIK 0001537435 · Every Form 4 filed by insiders at this issuer. See financials →

Annual report (10-K)

Latest 10-K filed Mar 19, 2026. Sentiment + YoY language diff vs prior year. Read sections →

Signal:Neutral
Risk Factors:tone -0.0347Δ-0.001891% similar+34/-44
MD&A:tone -0.0096Δ-0.000286% similar+72/-65

Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.

Recent 8-K announcements

Per-item disclosure feed. Item 2.02 is the earnings release.

Top insiders

Most active reporters at Tecogen Inc.

NameRolesFilings
Hatsopoulos John
Director
56
Lewis Earl R
Director
28
Rangesh Abinand
OfficerDirector
6
Ghoniem Ahmed
Director
5
Hirsch Susan B
Director
5

Showing 1-5 of 13

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Top performers

Insiders ranked by realized 90-day signed return on their open-market trades at Tecogen Inc.. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.

#InsiderTradesWin rateAvgMedianBestWorst
1Lewis Earl R2748%+3.4%0.0%+148.4%-17.5%
2Hatsopoulos John6537%+0.1%-2.1%+81.7%-27.4%
3Panora Robert A50%-30.2%-23.8%-13.4%-52.0%
4Lafaille Stephen520%-4.8%-22.1%+106.6%-52.0%
5Rangesh Abinand633%-3.8%-9.3%+14.9%-19.6%

All filings

121 Form 4 / 4-A filings, newest first

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