Clearsign Technologies (CLIR)10% owner bought ~$1.77M

~$1.77M

Approx. value · 500K sh @ $3.54

1.34M

Holds after · shares reported

Traded

Jul 22, 2026

Filed

Jul 24, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. May 28, 2026Company filing · Form 8-K · Material agreement, Other newsSigned an important agreement, and reported other company news
2. Jul 21, 2026Company filing · Form 8-K · Material agreement, Unregistered sharesSigned an important agreement, and sold new shares without registering them (and 1 more item)
3. Jul 22, 2026 · this disclosureInsider · Their first buy on record10% owner purchased ~$1.77M of CLIR shares in the open market

What came next

1. Aug 6, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“At the 2026 annual meeting of stockholders of ClearSign Technologies Corporation (the “Company”) held on June 8, 2026 (the “Annual Meeting”), the Company’s board of directors (the “Board”) consisted of five directorships, and four directors stood for re-election at the Annual Meeting, with one directorship remaining vacant.”
2. Aug 19, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Clearsign Technologies

For Clearsign Technologies, OQRO holds 1 insider filing (SEC Form 4 or Form 144) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its CLIR page.

Other recent filings by PASQUESI JOHN M, 10% owner

• SEC Form 4 at Arch Capital Group (ACGL)Dec 16, 2025
• SEC Form 4 at Arch Capital Group (ACGL)Dec 16, 2025
• SEC Form 4 at Arch Capital Group (ACGL)Dec 16, 2025
• SEC Form 4 at Arch Capital Group (ACGL)May 14, 2025
• SEC Form 4 at Arch Capital Group (ACGL)May 14, 2025

The full history of PASQUESI JOHN M, 10% owner is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Clearsign Technologies

• SEC Form 4Apr 28, 2026
• SEC Form 4Apr 28, 2026
• SEC Form 4Mar 19, 2026
• SEC Form 4Mar 19, 2026

Everything OQRO holds on this company is on its CLIR page.