Updated Jul 16, 2026 · Last SEC filing 2026-07-02
ClearSign Technologies Corp (CLIR) has filed 5 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-02. 6 Form 8-K material event filings were reported by CLIR in the last 90 days. InsiderAlpha tracks every CLIR SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Industrial Instruments For Measurement, Display, and Control (SIC 3823) |
|---|---|
| SEC CIK | 0001434524 |
| Form 4 filings (90d) | 5 |
|---|---|
| Form 8-K filings (90d) | 6 |
| Latest Form 4 filing | 2026-07-02 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Silva Gil Todd | Director | P — Open-market purchase | 1.0K | $5.25 | $5K | SEC | |
| Silva Gil Todd | Director | P — Open-market purchase | 1.0K | $5.32 | $5K | SEC | |
| Silva Gil Todd | Director | P — Open-market purchase | 2.0K | $4.20 | $8K | SEC | |
| Silva Gil Todd | Director | P — Open-market purchase | 2.0K | $4.36 | $9K | SEC | |
| Deller Colin James | Chief Executive Officer | A — Grant or award | 7.0K | $5.62 | $39K | SEC | |
| Hinds Brent | Chief Financial Officer | F — Tax withholding / forfeiture | 20.8K | $0.56 | $12K | SEC | |
| Hinds Brent | Chief Financial Officer | A — Grant or award | 56.6K | $0.00 | — | SEC | |
| Deller Colin James | Chief Executive Officer | F — Tax withholding / forfeiture | 3.5K | $5.62 | $20K | SEC | |
| Deller Colin James | Chief Executive Officer | A — Grant or award | 210.0K | $0.00 | — | SEC | |
| Deller Colin James | Chief Executive Officer | F — Tax withholding / forfeiture | 105.0K | $0.56 | $59K | SEC | |
| Hinds Brent | Chief Financial Officer | F — Tax withholding / forfeiture | 2.8K | $0.59 | $2K | SEC | |
| Hinds Brent | Chief Financial Officer | M — Option exercise | 7.5K | — | — | SEC | |
| Hinds Brent | Chief Financial Officer | M — Option exercise | 9.3K | — | — | SEC | |
| Hinds Brent | Chief Financial Officer | F — Tax withholding / forfeiture | 3.4K | $0.59 | $2K | SEC | |
| Hinds Brent | Chief Financial Officer | F — Tax withholding / forfeiture | 3.7K | $0.60 | $2K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for ClearSign Technologies Corp (CLIR). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Silva Gil Todd | 4 | $11K |
| Deller Colin James | 2 | $59K |
| DIGIANDOMENICO ANTHONY | 1 | — |
| Basenese Lou | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in CLIR insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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