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TGEN · Tecogen Inc.
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TGEN Tecogen (TGEN) Insider Trading, Ownership & Congress Trades

Industrials · Air-cond & warm air heatg equip & comm & indl refrig equip · CIK 0001537435
Quote by TradingView
SEC filings
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
37
13F, latest reported quarter

Tecogen insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

No insider purchases or sales are on record for TECOGEN INC. in the period covered. Source: SEC Form 4 filings, as of 2026-10-27.

Insider
Filed
Shares
Value
Since filing
Ghoniem Ahmed
Director
BUY
2026-04-27 SECtraded 2026-04-24
12,723
$10.1K
-54.3%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 12,723 shares held after it.
  • 2 other insiders bought within 30 days.
  • 37 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Ghoniem Ahmed bought about $10.1K of TGEN on Apr 24, 2026; 2 other insiders bought within 30 days and 37 funds added in the latest 13F quarter.
Hirsch Susan B
Director
BUY
2026-04-14 SECtraded 2026-04-13
5,000
$18.6K
-51.0%
Context
  • 2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on Mar 27, 2026.
  • +45.3% median (+45.3% mean) 90-day return after 2 previous buys.
  • The trade is 1.9% of the 265,416 shares held after it.
  • 5 other insiders bought within 30 days.
  • 37 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Hirsch Susan B bought about $18.6K of TGEN on Apr 13, 2026; 5 other insiders bought within 30 days and 37 funds added in the latest 13F quarter.
Hirsch Susan B
Director
BUY
2026-03-27 SEC
10,000
$25.4K
-22.0%
Context
  • 1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Oct 19, 2023.
  • The trade is 3.8% of the 260,416 shares held after it.
  • 5 other insiders bought within 30 days.
  • 37 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Hirsch Susan B bought about $25.4K of TGEN on Mar 27, 2026, the largest insider purchase at the company since 2024; 5 other insiders bought within 30 days and 37 funds added in the latest 13F quarter.
Lewis Earl
Director
BUY
2026-03-27 SEC
5,000
$12.6K
-22.0%
Context
  • 1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Mar 26, 2026.
  • The trade is 0.5% of the 1,011,006 shares held after it.
  • 5 other insiders bought within 30 days.
  • 37 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lewis Earl bought about $12.6K of TGEN on Mar 27, 2026; 5 other insiders bought within 30 days and 37 funds added in the latest 13F quarter.
Lewis Earl
Director
BUY
2026-03-27 SECtraded 2026-03-26
5,000
$14.4K
-22.0%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 0.5% of the 1,006,006 shares held after it.
  • 5 other insiders bought within 30 days.
  • 37 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lewis Earl bought about $14.4K of TGEN on Mar 26, 2026; 5 other insiders bought within 30 days and 37 funds added in the latest 13F quarter.
143 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
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Seven facts, ranked against the sector · Rank is not a forecast
Insiders
no insider buys or sells on file
Congress
no House purchase disclosed in the last 12 months
Funds
37 funds bought in last quarter
below 81% of Industrials
Revenue
+19.7% year over year
more than 81% of Industrials
Margin
-30.5% net margin
below 88% of Industrials
Buybacks
no share repurchases reported
Short interest
6.3% of the float short (float per yahoo 2026-10-26) · 7.8 days to cover · settled 2026-09-30
more than 58% of Industrials
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch TGEN

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-77.2%12M
-77%-45%-13%+19%2025-102025-122026-022026-042026-062026-082026-10 2026-03-27 · Hirsch Susan B bought $25.4K2026-03-23 · Whiting John Kimball IV bought $23.8K2026-03-20 · Deschenes Roger P. bought $22.3K2026-04-13 · Hirsch Susan B bought $18.6K2026-03-26 · Lewis Earl bought $14.4K2026-03-27 · Lewis Earl bought $12.6K2026-04-24 · Ghoniem Ahmed bought $10.1K2026-03-20 · Rangesh Abinand bought $6.9K
Insider buy
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns TGEN: institutional holders (13F)

13F holdings, latest reported quarter
Portolan Capital Management, LLC
1,551,113 sh
$8.1M
VANGUARD CAPITAL MANAGEMENT LLC
788,670 sh
$4.1M
BARD ASSOCIATES INC
682,221 sh
$3.6M
Clear Harbor Asset Management, LLC
650,000 sh
$3.4M
HERALD INVESTMENT MANAGEMENT Ltd
420,000 sh
$2.2M

Congress trades in TGEN

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

TGEN planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.

TGEN mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
Gabelli Global Mini Mites Fund
$104.4K position · as of 2026-06-30
0.4%
Ultra-Small Company Market Fund
$172.5K position · as of 2026-06-30
0.1%
ACUITAS US MICROCAP FUND
$134.9K position · as of 2026-06-30
0.1%
iShares Micro-Cap ETF
$326.4K position · as of 2026-06-30
0.0%
1290 VT Micro Cap Portfolio
$21.7K position · as of 2026-06-30
0.0%
Strategic Advisers U.S. Total Stock Fund
$4.6M position · as of 2026-05-31
0.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Executive pay vs shareholder return · Abinand Rangesh
CEO pay, headline and as actually paid, against the company's return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$812.5K
$1.1M
$337.8K
+237%
n/a
2024
$203.5K
$196.9K
$167.6K
+21%
n/a
2023
$226.2K
$214.2K
$173.9K
-35%
n/a
2022
$241.1K
$305.1K
$202.1K
+5%
n/a
Tagged by the company under SEC Item 402(v). Returns are cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows 37 funds added last quarter. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector by SEC SIC code
AXONTMOROKPKOHOFLXXPELSYMLIIITRIWABSNASXI

TGEN financials

Revenue growth
+19.7%
XBRL, annual
Net margin
-30.5%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$24.6M
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
-42.3%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
-$11.8M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
n/a
no debt line filed
Cash flow to debt
n/a
no debt line filed
Return on equity
-77.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
-34.7%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
n/a
tax provision or pre-tax income not filed for the four quarters
Return on capital employed
-55.7%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Enterprise value
n/a
no debt line filed
FCF yield
-20.4%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-122024-122023-122022-12
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 years, as known on 2026-10-27

TGEN Stock Sonar score 4/7 axes

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TGEN ranks highest on risk and compliance (53rd percentile) and growth (47th), and lowest on profitability (10th), among Industrials peers.

Profitability
10
Inputs
  • Return on equity-77.5% · 7 pct, sector of 198
  • Return on assets-34.7% · 13 pct, sector of 224
  • Return on invested capitaltax provision or pre-tax income not filed for the four quarters
  • Return on capital employed-55.7% · 8 pct, sector of 195
Growth
47
Inputs
  • Revenue growth, YoY+19.7% · 81 pct, sector of 254
  • Backlog growth, YoY-26.4% · 14 pct, sector of 89
Institutional and government
18
Inputs
  • Funds adding, latest quarter37 · 18 pct, sector of 201
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
53
Inputs
  • Short interest, % of float+6.3% · 32 pct, sector of 269
  • Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
  • EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
  • New text in Risk Factors, latest 10-K+7.0% · 73 pct, sector of 197
3 not measured: Financial health, Insider conviction, US patents
  • Financial health needs 1 of 2 inputs, 0 present: no debt line filed
  • Insider conviction needs 1 of 2 inputs, 0 present: no Form 4 purchase or sale (code P or S) in 180 days; no insider trades in 180 days
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

4 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

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