WAVEMAN · COMPANY

TGEN · Tecogen Inc.

LIVE

TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475

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TGEN

Name: TECOGEN INC. (TGEN) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

TECOGEN INC.

INDUSTRIALS · AIR-COND & WARM AIR HEATG EQUIP & COMM & INDL REFRIG EQUIP · CIK 0001537435

CLUSTER · 6 INSIDERSC-SUITE BUYING · 3☆ WATCH

INSIDER NET · 180D

$134.1K

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

13F, latest reported quarter

REVENUE GROWTH

+19.7%

XBRL, annual

NET MARGIN

-30.5%

CONVERSIONS · 180D

codes C/M, not in net · $44.0K priced

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net +$134.1K over 180 days

more than 85% of Industrials

CONGRESS

no member of Congress has reported trading it

FUNDS

37 funds added or opened last quarter

below 78% of Industrials

REVENUE

+19.7% year over year

more than 76% of Industrials

MARGIN

-30.5% net margin

below 82% of Industrials

BUYBACKS

no share repurchases reported

SHORT

no short interest reported

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

6 insiders independently bought a net $134.1K — no planned sales are queued against it.

37 funds added or opened positions in the latest 13F quarter, of 69 holders.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN -60.1%

-60.1%12M

INSIDER BUY

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

6 insiders reported buying shares.

The record shows a net $134.1K bought by insiders over 180 days, 37 funds added last quarter. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

DELL ANET TDG TSLA PANW AXON STX KTOS CRCT OFLX JOBY FTNT

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, TECOGEN INC. insiders bought a net $134.1K of stock across 147 Form 4 purchases and sales, with 6 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-05.

INSIDER

FILED

VALUE

Ghoniem Ahmed

Director

BUY

2026-04-24

12,723.0

$10.1K

Hirsch Susan B

Director

BUY

2026-04-13

5,000.0

$18.6K

Hirsch Susan B

Director

BUY

2026-03-27

10,000.0

$25.4K

Lewis Earl

Director

BUY

2026-03-27

5,000.0

$12.6K

Lewis Earl

Director

BUY

2026-03-26

5,000.0

$14.4K

147 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 142 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders

13F · holdings as of the latest quarter funds have reported

Portolan Capital Management, LLC

1,551,113.0 sh

$8.1M

VANGUARD CAPITAL MANAGEMENT LLC

788,670.0 sh

$4.1M

BARD ASSOCIATES INC

682,221.0 sh

$3.6M

Clear Harbor Asset Management, LLC

650,000.0 sh

$3.4M

HERALD INVESTMENT MANAGEMENT Ltd

420,000.0 sh

$2.2M

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

FORM 144

No planned-sale notices

No insider has notified an intent to sell. This is the panel to watch after a run-up.

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

Gabelli Global Mini Mites Fund

$51.2K POSITION · AS OF 2026-03-31

0.2%

Ultra-Small Company Market Fund

$84.6K POSITION · AS OF 2026-03-31

0.1%

ACUITAS US MICROCAP FUND

$55.3K POSITION · AS OF 2026-03-31

0.1%

Embark Small Cap Equity Fund

$86.1K POSITION · AS OF 2026-04-30

0.0%

JNL Multi-Manager Small Cap Growth Fund

$95.5K POSITION · AS OF 2026-03-31

0.0%

Victory Extended Market Index Fund

$9.9K POSITION · AS OF 2026-04-30

0.0%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Executive pay vs shareholder return · Abinand Rangesh

DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself

CEO TOTAL

ACTUALLY PAID

OTHER NEOs AVG

TSR

PEER TSR

2025

$812.5K

$1.1M

$337.8K

+237%

—

2024

$203.5K

$196.9K

$167.6K

+21%

—

2023

$226.2K

$214.2K

$173.9K

-35%

—

2022

$241.1K

$305.1K

$202.1K

+5%

—

TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2025-12	2024-12	2023-12	2022-12
REVENUE	$27.1M	$22.6M	$25.1M	$25.0M
GROSS PROFIT	$9.8M	$9.9M	$10.2M	$11.1M
OPERATING INCOME	$-8.2M	$-4.5M	$-4.4M	$-2.3M
NET INCOME	$-8.2M	$-4.8M	$-4.6M	$-2.4M
EPS (DILUTED)	-0.30	-0.19	-0.19	-0.10
OPERATING CASH FLOW	$-9.9M	$4.1M	$-817.8K	$-1.4M
CASH	$12.4M	$5.4M	$1.4M	$1.9M

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-05 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE