SEC Form 4 · accession 0001104659-26-080468
ClearSign Technologies Corp · CLIR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Gil Todd Silva
Director
Period of report
Jun 30, 2026
Accepted (ET)
Jul 2, 2026 · 7:01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F2 | — | Jun 30, 2026 | A | 4,087 | A | — | — | Common Stock | 4,087 | 19,576 | D |
| Non-Statutory Stock OptionsF3 | $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 restricted stock units ("RSUs") under the ClearSign Technologies Corporation Amended and Restated 2021 Equity Incentive Plan (the "Plan") pursuant to the issuer's non-employee director compensation policy, and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.
- F2The RSUs will vest upon the first to occur of: (1) a Change in Control (as defined in the applicable RSU award agreement), (2) the reporting person's Disability (as defined in the applicable RSU award agreement); (3) the reporting person's death; or (4) the reporting person's separation from service.
- F3As 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 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.