Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

LIQTECH INTERNATIONAL INC

LIQT · Nasdaq · CIK 0001307579 · Industrials · Pollution & Treatment Controls

INSIDER SIGNAL

55.5 / 100

2 buyers · 2 purchase transaction lines · $750.0K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeModerate
RoleModerate
RecencyLow
ConvictionStrong
Score anatomy

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

Cluster+14.0 / 35
Purchase size+16.5 / 25
Role+14.0 / 20
Recency+1.1 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 2 insider(s), not 4+
  • ⚠ Role scores low · most senior buyer: TenPercentOwner (CEO, chair and 10% owners score lowest)
  • ⚠ Purchase activity is becoming less recent

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.

Insider activity timeline

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

AprMayJunJulAugSepOct
Bleichroeder LPTenPercentOwner
●○
Wowk RobertDirector
●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION93%Largest buyer: Bleichroeder LP · $700.0K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-06-05–2026-06-05

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

SIGNAL HISTORY

55.5 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 55.8
  2. 55.8
  3. 55.7
  4. 55.6
  5. 55.5

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

Recent Form 4 activity

2Purchases
0Sales
4Other Form 4 lines
4SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER1 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
-43.1%
3M
-48.1%
6M
-76.3%
12M
-85.4%

Volatility & liquidity

Volatility
97.6%
Beta
—
Avg daily value
USD 108,870

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-51.7%
ROE
-81.7%
Industry
Pollution & Treatment Controls

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

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

Shares short
89,214
Previous report
146,016
Avg daily volume
911,132
Days to cover
≤ 1.0

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
2026-06-05Wowk RobertPurchase (P)Common Stock50,000USD 1.00USD 50,000SEC filing ↗
2026-06-05Bleichroeder LPPurchase (P)Common Stock700,000USD 1.00USD 700,000SEC filing ↗
2023-06-14Chen FeiPurchase (P)Common Stock10,784USD 3.94USD 42,454SEC filing ↗
2023-05-26Chen FeiPurchase (P)Common Stock22,000USD 3.20USD 70,400SEC filing ↗
2022-05-19MEEUSEN RICHARD APurchase (P)Common Stock95,000USD 0.55USD 52,250SEC filing ↗
2022-05-18MEEUSEN RICHARD APurchase (P)Common Stock97,125USD 0.52USD 50,505SEC filing ↗
2022-05-17VERNON MARKPurchase (P)Common Stock500,000USD 0.50USD 250,000SEC filing ↗
2022-05-17Stadil Simon SeidelinPurchase (P)Common Stock80,000USD 0.50USD 40,000SEC filing ↗
2022-05-17Boswell PeytonPurchase (P)Common Stock500,000USD 0.50USD 250,000SEC filing ↗
2022-05-17BUEHLER ALEXANDER JPurchase (P)Common Stock2,000,000USD 0.50USD 1,000,000SEC filing ↗
2022-05-13LYTTON LAURENCE WPurchase (P)Common Stock1,375,000USD 0.50USD 687,500SEC filing ↗
2022-01-25LYTTON LAURENCE WPurchase (P)Common Stock100USD 5.44USD 544SEC filing ↗
2022-01-24LYTTON LAURENCE WPurchase (P)Common Stock16,089USD 5.24USD 84,306SEC filing ↗
2022-01-21LYTTON LAURENCE WPurchase (P)Common Stock20,000USD 5.40USD 108,000SEC filing ↗
2022-01-04LYTTON LAURENCE WPurchase (P)Common Stock10,900USD 5.95USD 64,855SEC filing ↗

Form 4 evidence

6 transaction lines in the latest 365-day window; 68 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-08Bleichroeder LPJ (J)Common Stock3,000,000USD 1.00USD 3,000,000SEC filing ↗
2026-06-05Wowk RobertPurchase (P)Common Stock50,000USD 1.00USD 50,000SEC filing ↗
2026-06-05Bleichroeder LPPurchase (P)Common Stock700,000USD 1.00USD 700,000SEC filing ↗
Show recent Form 4 evidence (6 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-08Bleichroeder LPJ (J)Common Stock3,000,000USD 1.00USD 3,000,000SEC filing ↗
2026-06-05Wowk RobertPurchase (P)Common Stock50,000USD 1.00USD 50,000SEC filing ↗
2026-06-05Bleichroeder LPPurchase (P)Common Stock700,000USD 1.00USD 700,000SEC filing ↗
2026-01-03Kowalczyk DavidTax withholding (F)Common Stock5,589USD 1.49USD 8,328SEC filing ↗
2026-01-03Chen FeiTax withholding (F)Common Stock67,860USD 1.49USD 101,111SEC filing ↗
2025-12-19Kowalczyk DavidAward / grant (A)Common Stock94,368USD 0.00USD 0SEC 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 date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerLIQT
CIK0001307579
SectorIndustrials
IndustryPollution & Treatment Controls Yahoo Finance
SEC SIC3590 Misc Industrial & Commercial Machinery & Equipment
ExchangeNasdaq

Data coverage

Local Form 4 history68 transaction lines from 2020-08-26 to 2026-06-08
23 P purchase lines · 5 S sale lines · 40 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.