Nasdaq · CIK 0001307579
LIQT LIQTECH INTERNATIONAL INC
Insider trading from SEC Form 4. Last filing Aug 19, 2026. Close $0.41 on Oct 12, 2026, +0% from the 52-week low and -86% from the high.
In brief
LIQTECH INTERNATIONAL INC (LIQT) has 12 SEC Form 4 filings on file from 8 insiders, the latest filed on Aug 19, 2026. In the last 90 days insiders made 1 open-market buy worth $50k and 0 open-market sells worth $0, net +$50k.
2 open-market trades have been scored at LIQT. The newest: Robert Wowk (director) bought $50k of stock on Jun 5, 2026, filed Aug 19, 2026, scored 38 (weak). The largest of the 2 shown: Bleichroeder LP (10% owner) bought $700k on Jun 5, 2026, scored 42 (moderate). 2 insiders bought within 14 days of each other around Jun 5, 2026.
1 Form 144 notice of planned sales is on file, the latest filed Nov 14, 2023.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at LIQTECH INTERNATIONAL INC, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 38Weak | Robert Wowk director buy | $50k 50,000 shares | - | - | |
| 42Moderate | Bleichroeder LP owner buy | $700k 700,000 shares | +22% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Nov 14, 2023 | Stadil Simon Seidelin Officer | 25,000 0.44% of outstanding | $98k | Nov 10, 2023 | none |
Transactions
Every row filed, 15 in all.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 5, 2026 | Robert Wowk director | POpen-market purchase Common Stock | +50,000 | $1.00 | $50k | 50,000 | Aug 19, 2026 |
| Jun 5, 2026 | Bleichroeder LP owner | POpen-market purchase Common Stockindirect: See footnote | +700,000 | $1.00 | $700k | 3,882,239 | Jun 9, 2026 |
| Jun 8, 2026 | Bleichroeder LP owner | JOther Common Stockindirect: See footnote | +3,000,000 | $1.00 | $3.0M | 6,882,239 | Jun 9, 2026 |
| Jan 3, 2026 | Fei Chen Chief Executive Officer | FTax withholding Common Stock | -67,860 | $1.49 | $101k | 417,898 | Jan 13, 2026 |
| Dec 19, 2025 | David Kowalczyk CFO and COO | AGrant or award Common Stock | +94,368 | $0.00 | $0 | 94,368 | Jan 13, 2026 |
| Jan 3, 2026 | David Kowalczyk CFO and COO | FTax withholding Common Stock | -5,589 | $1.49 | $8,328 | 88,779 | Jan 13, 2026 |
| Sep 12, 2025 | Fei Chen Chief Executive Officer | FTax withholding Common Stock | -13,021 | $2.34 | $30k | 498,593 | Sep 16, 2025 |
| Mar 26, 2025 | Bleichroeder LP owner | JOther Warrants to Purchase Common Stockderivativeindirect: See footnote | -531,250 | - | - | 0 | Mar 28, 2025 |
| Mar 26, 2025 | Bleichroeder LP owner | JOther Warrants to Purchase Common Stockderivativeindirect: See footnote | +531,250 | - | - | 531,250 | Mar 28, 2025 |
| Jan 7, 2025 | Alexander J Buehler director | AGrant or award Common Stock | +53,030 | $0.00 | $0 | 467,623 | Jan 13, 2025 |
| Jan 7, 2025 | Peyton Boswell director | AGrant or award Common Stock | +28,158 | $0.00 | $0 | 121,305 | Jan 13, 2025 |
| Jan 7, 2025 | Fei Chen Chief Executive Officer | AGrant or award Common Stock | +201,335 | $0.00 | $0 | 511,614 | Jan 13, 2025 |
| Jan 7, 2025 | Martin Kunz director | AGrant or award Common Stock | +26,516 | $0.00 | $0 | 48,918 | Jan 13, 2025 |
| Jan 7, 2025 | Richard A Meeusen director | AGrant or award Common Stock | +29,294 | $0.00 | $0 | 67,281 | Jan 13, 2025 |
| Jan 3, 2025 | Fei Chen Chief Executive Officer | FTax withholding Common Stock | -28,394 | $1.87 | $53k | 310,279 | Jan 7, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Alexander J Buehlerdirector, ceo, president, officer
- Bleichroeder LPowner
- Peyton Boswelldirector
- Fei ChenChief Executive Officer
- David KowalczykCFO and COO
- Martin Kunzdirector
- Richard A Meeusendirector
- Robert Wowkdirector
Questions about LIQT
Answered from the filings on this page, as of the latest one.
Are insiders buying LIQT?
As of Aug 19, 2026, SEC Form 4 filings show 1 open-market buy worth $50k by 1 insider and 0 open-market sells worth $0 by 0 insiders at LIQTECH INTERNATIONAL INC in the last 90 days, net +$50k. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade LIQT on the open market?
Robert Wowk (director) bought $50k of LIQT on Jun 5, 2026 and filed the Form 4 on Aug 19, 2026. InsiderTell scored 38 (weak), with 2 insiders on the same side within 14 days.
How many insiders file Form 4 at LIQTECH INTERNATIONAL INC?
8 people have filed a Form 4 at LIQTECH INTERNATIONAL INC, among them Alexander J Buehler (director, CEO and president), Bleichroeder LP (10% owner), Peyton Boswell (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.