SEC Form 4 · accession 0001104659-26-080466
ClearSign Technologies Corp · CLIR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Anthony Digiandomenico
Director
Period of report
Jun 30, 2026
Accepted (ET)
Jul 2, 2026 · 7:00 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001434524
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Non-Statutory Stock OptionsF1 | $3.67 | Jun 30, 2026 | A | 4,595 | A | — | Jun 29, 2036 | Common Stock | 4,595 | 4,595 | D |
Explanation of responses
- F1As compensation for services as a non-employee director during the quarter ended June 30, 2026, the reporting person was granted non-statutory stock options to purchase 4,595 shares of common stock under the ClearSign Technologies Corporation Amended and Restated 2021 Equity Incentive Plan pursuant to the issuer's non-employee director compensation policy. These non-statutory stock options were immediately vested and exercisable on the grant date.