Tamarly Intelligence
Company · CLIR (NASDAQ - All Markets)

ClearSign Technologies Corp

Industrial Instruments For Measurement, Display, and Control

Key figures
Industry
Industrial Instruments For Measurement, Display, and Control (SIC 3823)
Institutional holders
25 at 30 Jun 2026 (20 the quarter before) · Who holds it
SEC number
1434524

Source: SEC EDGAR filings and company facts, SEC Form 13F; checked 1 Oct 2026

Rounds and raises
31 Jul 2026
Form D: $2M sold of $2M offered, Other Technology SEC

Source: SEC EDGAR Form D and the linked articles. All raises this week

Questions and answers

Where is ClearSign Technologies Corp listed?
ClearSign Technologies Corp trades as CLIR on NASDAQ - All Markets. Tamarly shows no share prices.
How many institutions hold ClearSign Technologies Corp?
25 institutional holders reported it on SEC Form 13F for the period ended 30 Jun 2026, against 20 the quarter before.
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ClearSign Technologies Corp: CLIR, rounds, investors and filings | Tamarly