Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

TECOGEN INC.

TGEN · NYSE · CIK 0001537435 · Industrials · Electrical Equipment & Parts

INSIDER SIGNAL

39.2 / 100

1 buyers · 1 purchase transaction lines · $10.1K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeLow
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+7.0 / 35
Purchase size+1.7 / 25
Role+20.0 / 20
Recency+0.5 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Purchase activity is becoming less recent
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Ghoniem Ahmed · $10.1K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-04-24–2026-04-24

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Whiting John Kimball IVGeneral Counsel & Secretary
○○
Lafaille StephenVP of Business Development
○○
Deschenes Roger P.CAO
○○
Panora RobertCOO and President
○○
Rangesh AbinandChief Executive Officer
○○
Ghoniem AhmedDirector
●
● Purchase▼ Sale○ Other

—

SIGNAL HISTORY

39.2 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 39.3
  2. 39.2
  3. 39.2
  4. 39.2
  5. 39.2

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

8Purchases
0Sales
11Other Form 4 lines
19SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER10 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-20.1%
3M
-39.2%
6M
-15.1%
12M
-72.8%

Volatility & liquidity

Volatility
120.7%
Beta
—
Avg daily value
USD 462,043

Valuation

Market cap
USD 73.1M
P/E
—

Fundamentals

Profit margin
-30.5%
ROE
-38.1%
Industry
Electrical Equipment & Parts

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-13 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
1,159,159
Previous report
1,104,361
Avg daily volume
148,920
Days to cover
7.8

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-04-24Ghoniem AhmedPurchase (P)Common Stock12,723USD 0.79USD 10,051SEC filing ↗
2026-04-13Hirsch Susan BPurchase (P)Common Stock5,000USD 3.73USD 18,650SEC filing ↗
2026-03-27Lewis EarlPurchase (P)Common Stock5,000USD 2.52USD 12,600SEC filing ↗
2026-03-27Hirsch Susan BPurchase (P)Common Stock10,000USD 2.54USD 25,400SEC filing ↗
2026-03-26Lewis EarlPurchase (P)Common Stock5,000USD 2.88USD 14,400SEC filing ↗
2026-03-23Whiting John Kimball IVPurchase (P)Common Stock10,000USD 2.38USD 23,800SEC filing ↗
2026-03-20Rangesh AbinandPurchase (P)Common Stock3,000USD 2.30USD 6,900SEC filing ↗
2026-03-20Deschenes Roger P.Purchase (P)Common Stock10,000USD 2.23USD 22,300SEC filing ↗
2025-03-03Lafaille StephenPurchase (P)Common Stock400USD 2.50USD 1,000SEC filing ↗
2024-11-22LEWIS EARL RPurchase (P)Common Stock100,000USD 0.71USD 71,000SEC filing ↗
2024-09-27HATSOPOULOS JOHNPurchase (P)Common Stock10,000USD 0.84USD 8,400SEC filing ↗
2024-09-25HATSOPOULOS JOHNPurchase (P)Common Stock10,000USD 0.86USD 8,600SEC filing ↗
2024-08-19HATSOPOULOS JOHNPurchase (P)Common Stock10,000USD 0.90USD 9,000SEC filing ↗
2024-07-15LEWIS EARL RPurchase (P)Common Stock10,000USD 0.68USD 6,800SEC filing ↗
2024-07-15LEWIS EARL RPurchase (P)Common Stock10,000USD 0.68USD 6,800SEC filing ↗

Form 4 evidence

19 transaction lines in the latest 365-day window; 229 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-26Whiting John Kimball IVAward / grant (A)Common Stock19,342USD 0.00USD 0SEC filing ↗
2026-06-26Rangesh AbinandAward / grant (A)Common Stock174,081USD 0.00USD 0SEC filing ↗
2026-06-26Panora RobertAward / grant (A)Common Stock9,671USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (19 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-26Whiting John Kimball IVAward / grant (A)Common Stock19,342USD 0.00USD 0SEC filing ↗
2026-06-26Rangesh AbinandAward / grant (A)Common Stock174,081USD 0.00USD 0SEC filing ↗
2026-06-26Panora RobertAward / grant (A)Common Stock9,671USD 0.00USD 0SEC filing ↗
2026-06-26Lafaille StephenAward / grant (A)Common Stock29,013USD 0.00USD 0SEC filing ↗
2026-06-26Deschenes Roger P.Award / grant (A)Common Stock29,013USD 0.00USD 0SEC filing ↗
2026-06-26Whiting John Kimball IVAward / grant (A)Common Stock19,342USD —USD —SEC filing ↗
2026-06-26Rangesh AbinandAward / grant (A)Common Stock174,081USD —USD —SEC filing ↗
2026-06-26Panora RobertAward / grant (A)Common Stock9,671USD —USD —SEC filing ↗
2026-06-26Lafaille StephenAward / grant (A)Common Stock29,013USD —USD —SEC filing ↗
2026-06-26Deschenes Roger P.Award / grant (A)Common Stock29,013USD —USD —SEC filing ↗
2026-04-24Ghoniem AhmedPurchase (P)Common Stock12,723USD 0.79USD 10,051SEC filing ↗
2026-04-13Hirsch Susan BPurchase (P)Common Stock5,000USD 3.73USD 18,650SEC filing ↗
2026-03-27Lewis EarlPurchase (P)Common Stock5,000USD 2.52USD 12,600SEC filing ↗
2026-03-27Hirsch Susan BPurchase (P)Common Stock10,000USD 2.54USD 25,400SEC filing ↗
2026-03-26Lewis EarlPurchase (P)Common Stock5,000USD 2.88USD 14,400SEC filing ↗
2026-03-23Whiting John Kimball IVPurchase (P)Common Stock10,000USD 2.38USD 23,800SEC filing ↗
2026-03-20Rangesh AbinandPurchase (P)Common Stock3,000USD 2.30USD 6,900SEC filing ↗
2026-03-20Hatsopoulos JohnOption exercise / conversion (M)Common Stock50,000USD 0.88USD 44,000SEC filing ↗
2026-03-20Deschenes Roger P.Purchase (P)Common Stock10,000USD 2.23USD 22,300SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerTGEN
CIK0001537435
SectorIndustrials
IndustryElectrical Equipment & Parts Yahoo Finance
SEC SIC3585 Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip
ExchangeNYSE

Data coverage

Local Form 4 history229 transaction lines from 2020-04-21 to 2026-06-26
145 P purchase lines · 9 S sale lines · 75 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.