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Who

Earl Lewis

Director

Company insider

Files Form 4 as: Director, Tecogen; CEO, President & Chairman, Flir Systems; Director, NxStage Medical; Director, Harvard Bioscience; Director, American Dg Energy.

Every Form 4 they filed

In numbers

Trades disclosed
677
Buys
48
Sells
122
Bought
$1.1M
Sold
$140.3M
Companies
5
Companies where not an officer
4
First trade
30 Dec 2005
Last trade
26 Jun 2026
Last filed
30 Jun 2026

Companies traded

Where they are an officer
Flir SystemsDirector, Officer · last 14 May 20210 buys · 120 sells
Everywhere else they filed: board seats, 10% stakes, other companies
TGEN TecogenDirector · Machinery · last 26 Jun 202637 buys · 0 sells
NxStage MedicalDirector · last 21 Feb 20191 buy · 1 sell
HBIO Harvard BioscienceDirector · Life-science tools · last 2 Jan 20189 buys · 1 sell
American Dg EnergyDirector · last 2 Sep 20101 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
02Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
26 Jun 2026filed 30 Jun 2026TGEN Tecogenoption or derivative · MachinerySEC FORM 4 Code A$129K25,000 at $5.17filing
26 Jun 2026filed 30 Jun 2026TGEN Tecogenoption or derivative · MachinerySEC FORM 4 Code A$129K25,000 at $5.17filing
27 Mar 2026filed 27 Mar 2026TGEN TecogenMachinerySEC FORM 4 Bought$13K5,000 at $2.52filing
27 Mar 2026filed 27 Mar 2026TGEN TecogenMachinerySEC FORM 4 Bought$13K5,000 at $2.52filing
26 Mar 2026filed 27 Mar 2026TGEN TecogenMachinerySEC FORM 4 Bought$14K5,000 at $2.88filing
26 Mar 2026filed 27 Mar 2026TGEN TecogenMachinerySEC FORM 4 Bought$14K5,000 at $2.88filing
24 Jul 2025filed 28 Jul 2025TGEN Tecogenoption or derivative · MachinerySEC FORM 4 Code A$209K25,000 at $8.35filing
6 May 2025filed 7 May 2025TGEN TecogenMachinerySEC FORM 4 Code X$26K15,000 at $1.75filing
6 May 2025filed 7 May 2025TGEN TecogenMachinerySEC FORM 4 Code X$15K12,500 at $1.20filing
6 May 2025filed 7 May 2025TGEN TecogenMachinerySEC FORM 4 Code X$6,8756,250 at $1.10filing
1 May 2025filed 5 May 2025TGEN TecogenMachinerySEC FORM 4 Code J$514K240,256 at $2.14filing
22 Nov 2024filed 25 Mar 2025TGEN Tecogenoption or derivative · MachinerySEC FORM 4 Code M$71K100,000 at $0.71filing
22 Nov 2024filed 25 Mar 2025TGEN TecogenMachinerySEC FORM 4 Code X$71K100,000 at $0.71filing
22 Nov 2024filed 6 Dec 2024TGEN TecogenMachinerySEC FORM 4 Bought$71K100,000 at $0.71filing
15 Jul 2024filed 25 Mar 2025TGEN TecogenMachinerySEC FORM 4 Bought$6,80010,000 at $0.68filing
15 Jul 2024filed 17 Jul 2024TGEN TecogenMachinerySEC FORM 4 Bought$6,80010,000 at $0.68filing
15 Jul 2024filed 15 Jul 2024TGEN TecogenMachinerySEC FORM 4 Bought$6,80010,000 at $0.68filing
6 Jun 2024filed 18 Jun 2024TGEN Tecogenoption or derivative · MachinerySEC FORM 4 Code A$19K25,000 at $0.77filing
1 May 2024filed 3 May 2024TGEN TecogenMachinerySEC FORM 4 Bought$3,7505,000 at $0.75filing
24 Apr 2024filed 24 Apr 2024TGEN TecogenMachinerySEC FORM 4 Bought$6,80010,000 at $0.68filing

The newest 500 lines are listed; the numbers count every line.

News

Tecogen, Inc.: Data Center Cuts Electric Bills Substantially with Tecogen's InVerdeTGEN · finanznachrichten.de · 14 Oct 2026

0 headlines in the last 90 days name Earl Lewis; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Industrials37
Health Care10
Not placed123

Buys in green, sells in red, by the company’s sector.

Related people

Nobody else traded the same names lately.