SC 13D/A
File 005-86820
SCHEDULE 13D/A - AMENDMENT NO. 4
- Filing date
- 26 Jun 2024
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- Not listed
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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 775 SEC EDGAR filings since 05 May 2008
SEC filing history
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SC 13D/A
File 005-86820
SCHEDULE 13D/A - AMENDMENT NO. 3
- Filing date
- 05 Feb 2024
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- Not listed
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SC 13D/A
File 005-86820
FORM SC 13D/A
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- 18 Jul 2022
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- Not listed
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SC 13D/A
File 005-86820
FORM SC 13D/A
- Filing date
- 07 Oct 2020
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- Not listed
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SC 13D/A
File 005-86820
SC 13D/A
- Filing date
- 08 Jul 2019
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- Not listed
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SC 13D
File 005-86820
SCHEDULE 13D
- Filing date
- 18 Jan 2019
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- Not listed
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SC 13D
File 005-86820
SC 13D
- Filing date
- 30 Jul 2018
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- Not listed
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SC 13D/A
File 005-86820
SC 13D/A
- Filing date
- 07 Mar 2018
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- Not listed
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SC 13D/A
File 005-86820
SC 13D/A
- Filing date
- 14 Mar 2017
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- Not listed
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SC 13D/A
File 005-86820
SC 13D/A
- Filing date
- 08 Mar 2017
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- Not listed
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SC 13D/A
File 005-86820
SCHEDULE 13D/A
- Filing date
- 01 Jun 2016
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- Not listed
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SC 13D/A
File 005-86820
SCHEDULE 13D/A
- Filing date
- 01 Jun 2016
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- Not listed
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SC 13D/A
File 005-86820
SC 13D/A
- Filing date
- 25 Mar 2015
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- Not listed
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SC 13D/A
File 005-86820
SCHEDULE 13D/A
- Filing date
- 25 Feb 2013
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- Not listed
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SC 13D/A
File 005-86820
SCHEDULE 13D/A
- Filing date
- 26 Jun 2012
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- Not listed
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SC 13D/A
File 005-86820
SCHEDULE 13D/A
- Filing date
- 26 Jun 2012
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- Not listed
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SC 13D
File 005-86820
SCHEDULE 13D
- Filing date
- 01 May 2012
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- Not listed
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