CLIR — ClearSign Technologies Corp
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Industrials
Measured signals that fired on CLIR
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-22 | PASQUESI JOHN M 10% owner | Open-market purchase | 500.0K | 3.54 | 1.8M |
| 2026-04-23 | Silva Gil Todd Director | Open-market purchase | 1.0K | 5.32 | 5.3K |
| 2026-04-23 | Silva Gil Todd Director | Open-market purchase | 1.0K | 5.25 | 5.2K |
| 2026-03-17 | Silva Gil Todd Director | Open-market purchase | 2.0K | 4.20 | 8.4K |
| 2026-03-16 | Silva Gil Todd Director | Open-market purchase | 2.0K | 4.36 | 8.7K |
| 2026-02-26 | Deller Colin James Chief Executive Officer | Shares withheld for tax | 105.0K | 0.56 | 58.8K |
| 2026-02-26 | Deller Colin James Chief Executive Officer | Grant or award | 7.0K | 5.62 | 39.3K |
| 2026-02-26 | Deller Colin James Chief Executive Officer | Shares withheld for tax | 3.5K | 5.62 | 19.7K |
| 2026-02-26 | Hinds Brent Chief Financial Officer | Shares withheld for tax | 20.8K | 0.56 | 11.6K |
| 2026-02-26 | Hinds Brent Chief Financial Officer | Grant or award | 56.6K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 459.7K | 105.4K |
| SIMON QUICK ADVISORS, LLC | 263.0K | 60.3K |
| GEODE CAPITAL MANAGEMENT, LLC | 251.5K | 57.7K |
| Beacon Pointe Advisors, LLC | 118.5K | 27.2K |
| VANGUARD FIDUCIARY TRUST CO | 102.3K | 23.5K |
| BlackRock, Inc. | 85.0K | 19.5K |
| HighTower Advisors, LLC | 55.3K | 12.7K |
| Creative Planning | 53.9K | 12.4K |
| DDD Partners, LLC | 52.3K | 12.0K |
| Rockefeller Capital Management L.P. | 35.4K | 8.1K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 10-Q | 2026-08-14 | 2026-06-30 | on EDGAR ↗ |
| 3 | 2026-08-11 | 2026-08-06 | on EDGAR ↗ |
| 8-K | 2026-08-11 | 2026-08-06 | on EDGAR ↗ |
| D | 2026-07-31 | — | on EDGAR ↗ |
| SCHEDULE 13G/A | 2026-07-24 | — | on EDGAR ↗ |
| 4 | 2026-07-24 | 2026-07-22 | on EDGAR ↗ |
| 8-K | 2026-07-23 | 2026-07-21 | on EDGAR ↗ |
| S-8 | 2026-07-06 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Clearsign Technologies Corp (CLIR) filed form 8-K · 2026-08-20 · SEC EDGAR
- ClearSign Technologies Corp (CLIR) filed form 10-Q · 2026-08-14 · SEC EDGAR
- Clearsign Technologies Corp (CLIR) filed form 8-K · 2026-08-11 · SEC EDGAR
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