ClearSign Technologies Corp
CLIR- Exchange
- Nasdaq
- Industry
- Industrial Instruments For Measurement, Display, and Control
- SEC CIK
- 0001434524
In the last 90 days, ClearSign Technologies Corp insiders filed 1 open-market purchase and 0 sales; 24 institutions reported holding it in 13F filings for Q2 2026, worth $1.55M in total; no superinvestor holds it.
Holders of 5% or more of CLIR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of ClearSign Technologies Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Pasquesi John M | 13G/A | 19.90%1.36M shares | −0.09 ppfrom 19.99% | Apr 9, 20252 filings | Jul 24, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on ClearSign Technologies Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 24, 20264:48 PM ET | Pasquesi John Mand 1 other | 13G/A | 19.90%1.36M shares | −0.09 ppfrom 19.99% | Jul 22, 2026 | SEC |
| Apr 9, 20254:05 PM ET | Pasquesi John Mand 1 other | 13G | 19.99%11.0M shares | New | Feb 14, 2025 | SEC |
| Feb 19, 20255:05 PM ET | clirSPV LLCand 3 others | 13D/A | 4.30%2.25M shares | –Below 5% | Feb 14, 2025 | SEC |
| Jul 18, 2022 | clirSPV LLC | 13D/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell ClearSign Technologies Corp shares.
No Form 144 notices for ClearSign Technologies Corp are on file.