8-K
File 001-35521
FORM 8-K
- Filing date
- 21 Aug 2020
- Reporting date
- 19 Aug 2020
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ClearSign Technologies Corp reports
- Company location
- Tulsa, OK
- Fiscal year end
- 31 December
Company
Names, identifiers, and filing context for this profile.
1 identity field
SEC filing record 1 source field available
ClearSign Technologies Corp has filed 785 SEC EDGAR filings since 05 May 2008
SEC filing history
Showing 326-350 of 784 matching filings.
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14
424B2
File 333-232402
424B2
- Filing date
- 21 Aug 2020
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 Aug 2020
- Reporting date
- 18 Aug 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 Aug 2020
- Reporting date
- 18 Aug 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 Aug 2020
- Reporting date
- 18 Aug 2020
- SEC evidence
- Open document Open filing
- Next action
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424B2
File 333-232402
424B2
- Filing date
- 19 Aug 2020
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
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10-Q
File 001-35521
FORM 10-Q
- Filing date
- 14 Aug 2020
- Reporting date
- 30 Jun 2020
- SEC evidence
- Open document Open filing Open XBRL
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8-K
File 001-35521
FORM 8-K
- Filing date
- 13 Jul 2020
- Reporting date
- 10 Jul 2020
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8-K
File 001-35521
FORM 8-K
- Filing date
- 01 Jul 2020
- Reporting date
- 30 Jun 2020
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8-K
File 001-35521
FORM 8-K
- Filing date
- 22 Jun 2020
- Reporting date
- 17 Jun 2020
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8-K
File 001-35521
FORM 8-K
- Filing date
- 18 Jun 2020
- Reporting date
- 16 Jun 2020
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S-8
File 333-238613
FORM S-8
- Filing date
- 22 May 2020
- Reporting date
- Not listed
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 May 2020
- Reporting date
- 18 May 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 May 2020
- Reporting date
- 18 May 2020
- SEC evidence
- Open document Open filing
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- Verify source filing
4
OWNERSHIP DOCUMENT
- Filing date
- 20 May 2020
- Reporting date
- 18 May 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 20 May 2020
- Reporting date
- 18 May 2020
- SEC evidence
- Open document Open filing
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10-Q
File 001-35521
FORM 10-Q
- Filing date
- 14 May 2020
- Reporting date
- 31 Mar 2020
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DEF 14A
File 001-35521
DEF 14A
- Filing date
- 27 Apr 2020
- Reporting date
- 17 Jun 2020
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8-K
File 001-35521
FORM 8-K
- Filing date
- 21 Apr 2020
- Reporting date
- 20 Apr 2020
- SEC evidence
- Open document Open filing
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8-K
File 001-35521
FORM 8-K
- Filing date
- 17 Apr 2020
- Reporting date
- 15 Apr 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 03 Apr 2020
- Reporting date
- 01 Apr 2020
- SEC evidence
- Open document Open filing
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4
OWNERSHIP DOCUMENT
- Filing date
- 03 Apr 2020
- Reporting date
- 01 Apr 2020
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
OWNERSHIP DOCUMENT
- Filing date
- 03 Apr 2020
- Reporting date
- 01 Apr 2020
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
OWNERSHIP DOCUMENT
- Filing date
- 03 Apr 2020
- Reporting date
- 01 Apr 2020
- SEC evidence
- Open document Open filing
- Next action
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10-K
File 001-35521
FORM 10-K
- Filing date
- 30 Mar 2020
- Reporting date
- 31 Dec 2019
- SEC evidence
- Open document Open filing Open XBRL
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