Form 4 for CLIR ClearSign Technologies Corp
Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-20 · accession 0001104659-26-019278 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-02-24 | 2026-02-20+ | CLIR | Hinds Brent | CFO | M - OptEx | — | +16.9K | 137.7K | +14% | — |
| DM | 2026-02-24 | 2026-02-20+ | CLIR | Hinds Brent | CFO | F - Tax | $0.59 | -6,178 | 130.2K | -5% | -$3,645 |
| DM | 2026-02-24 | 2026-02-20+ | CLIR | Hinds Brent | CFO | M - OptEx | $0.00 | -16.9K | 18.6K | -48% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-20 | M | A | 9,315 | — | 133,571 | D | — | — | (F1) Reflects the vesting of 9,315 restricted stock units ("RSUs") out of the 27,946 RSUs granted to the reporting person on February 20, 2025, into an equal number of shares of the Company's common stock, without the payment of any consideration, pursuant to the Company's 2021 Equity Incentive Plan. |
| 2 | Common | Common Stock | 2026-02-22 | F | D | 2,765 | $0.59 | 134,940 | D | — | — | (F4) Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of 7,547 RSUs on February 22, 2026, and calculated based on the closing price of the Company's common stock, as reported on the Nasdaq Stock Market, on February 20, 2026, of $0.5949 (as February 22, 2026 fell on a weekend). |
| 3 | Common | Common Stock | 2026-02-22 | M | A | 7,547 | — | 137,705 | D | — | — | (F3) Reflects the vesting of 7,547 RSUs out of the 22,641 RSUs granted to the reporting person on February 22, 2024, into an equal number of shares of the Company's common stock, without the payment of any consideration, pursuant to the Company's 2021 Equity Incentive Plan. |
| 4 | Common | Common Stock | 2026-02-20 | F | D | 3,413 | $0.59 | 130,158 | D | — | — | (F2) Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of 9,315 RSUs on February 20, 2026, and calculated based on the closing price of the Company's common stock, as reported on the Nasdaq Stock Market, on February 20, 2026, of $0.5949. |
| 5 | Derivative | Restricted Stock Unit | 2026-02-22 | M | D | 7,547 | $0.00 | 7,547 | D | — · — to — | 7,547 Common Stock | (F7) On February 22, 2024, the reporting person was granted 22,641 RSUs as a one-time bonus for services as an executive officer for the year ended December 31, 2023, and each RSU represents a right to receive one share of common stock or the cash equivalent thereof. (F8) The RSUs granted on February 22, 2024, vest in three equal installments that commenced on February 22, 2025. |
| 6 | Derivative | Restricted Stock Unit | 2026-02-20 | M | D | 9,315 | $0.00 | 18,631 | D | — · — to — | 9,315 Common Stock | (F5) On February 20, 2025, the reporting person was granted 27,946 RSUs as a one-time bonus for services as an executive officer for the year ended December 31, 2024, and each RSU represents a right to receive one share of common stock or the cash equivalent thereof. (F6) The RSUs granted on February 20, 2025, vest in three equal installments that commenced on February 20, 2026. |