As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of ClearSign Technologies Corp. The largest reported stake is John M Pasquesi's, at 19.9%. One filing is on record since July 24, 2026 (Schedule 13G/A, July 24, 2026).
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Key facts
- · Reporting person: John M Pasquesi · Sole voting: 0 · Shared voting: 1,364,977 · Sole dispositive: 0 · Shared dispositive: 1,364,977 · SCHEDULE 13G/A, 2026-07-24
- · Reporting person: Otter Capital LLC · Sole voting: 0 · Shared voting: 1,364,977 · Sole dispositive: 0 · Shared dispositive: 1,364,977 · SCHEDULE 13G/A, 2026-07-24
- · Holder: John M Pasquesi · Percent: 19.9% · SCHEDULE 13G/A
- · Holder: John M Pasquesi · Percent: 19.9% · Shares: 1,364,977 · SCHEDULE 13G/A
ClearSign Technologies Corp has 1 Schedule 13D or 13G filing on record since 2026-07-24. 1 holder's latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 19.9% | 1,364,977 | SCHEDULE 13G/A, 2026-07-24 | 2026-07-22 |
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More on ClearSign Technologies Corp and the records around it.
ClearSign Technologies Corp elsewhere on the record
- Leadership changes Aug 2026
- Company profile and every filing Jul 2026
- Form D filing Jul 2026
- Who owns it
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| John M Pasquesi | 0 | 1,364,977 | 0 | 1,364,977 | SCHEDULE 13G/A, 2026-07-24 |
| Otter Capital LLC | 0 | 1,364,977 | 0 | 1,364,977 | SCHEDULE 13G/A, 2026-07-24 |
The latest filing identifies ClearSign Technologies Corp by CUSIP 185064102 and gives its principal executive office as 8023 E. 63RD PLACE, SUITE 101, TULSA, OK 74133 (SCHEDULE 13G/A, 2026-07-24).
What the percentages are based on
Mr. Pasquesi: 19.99% and Otter Capital LLC: 19.99%. The foregoing percentages are calculated based on 6,307,455 shares of Common Stock represented to be outstanding by the Issuer on July 6, 2026, as reported in the Issuer's prospectus supplement filed on July 6, 2026, plus the 500,000 shares issued to Mr. Pasquesi and Otter Capital LLC on July 22, 2026, resulting in 6,807,080 shares outstanding.John M Pasquesi, SCHEDULE 13G/A, 2026-07-24
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-07-24 | John M Pasquesi | 19.9% | SCHEDULE 13G/A |
Also on the record for ClearSign Technologies Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 11, 2026 | Leadership change: Larry M. Saddler appointed, Director | — | Leadership changes | Source |
| July 31, 2026 | Form D, private offering | $1.77M sold | Form D page | Source |
ClearSign Technologies Corp: every filing and event
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.