ClearSign Technologies Corp reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Tulsa, OK
SEC filing record 1 source field available
Fiscal year end
31 December
ClearSign Technologies Corp has filed 789 SEC EDGAR filings since 05 May 2008

SEC filing history

Showing 151-175 of 788 matching filings.

Per page
25
Current page
7
4

OWNERSHIP DOCUMENT

Filing date
25 Apr 2024
Reporting date
23 Apr 2024
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3

OWNERSHIP DOCUMENT

Filing date
25 Apr 2024
Reporting date
23 Apr 2024
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424B5 File 333-265967

424B5

Filing date
23 Apr 2024
Reporting date
Not listed
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424B5 File 333-265967

424B5

Filing date
19 Apr 2024
Reporting date
Not listed
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4/A

OWNERSHIP DOCUMENT

Filing date
10 Apr 2024
Reporting date
22 Feb 2024
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4

OWNERSHIP DOCUMENT

Filing date
02 Apr 2024
Reporting date
01 Apr 2024
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4

OWNERSHIP DOCUMENT

Filing date
02 Apr 2024
Reporting date
01 Apr 2024
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4

OWNERSHIP DOCUMENT

Filing date
02 Apr 2024
Reporting date
01 Apr 2024
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S-8 File 333-278411

FORM S-8

Filing date
01 Apr 2024
Reporting date
Not listed
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FWP File 333-265967

FWP

Filing date
19 Mar 2024
Reporting date
Not listed
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424B5 File 333-265967

424B5

Filing date
18 Mar 2024
Reporting date
Not listed
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424B5 File 333-265967

424B5

Filing date
18 Mar 2024
Reporting date
Not listed
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4

OWNERSHIP DOCUMENT

Filing date
26 Feb 2024
Reporting date
22 Feb 2024
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4/A

OWNERSHIP DOCUMENT

Filing date
26 Feb 2024
Reporting date
02 Feb 2024
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4/A

OWNERSHIP DOCUMENT

Filing date
26 Feb 2024
Reporting date
02 Feb 2023
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4

OWNERSHIP DOCUMENT

Filing date
26 Feb 2024
Reporting date
22 Feb 2024
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4/A

OWNERSHIP DOCUMENT

Filing date
26 Feb 2024
Reporting date
02 Feb 2023
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4

OWNERSHIP DOCUMENT

Filing date
06 Feb 2024
Reporting date
02 Feb 2024
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SC 13D/A File 005-86820

SCHEDULE 13D/A - AMENDMENT NO. 3

Filing date
05 Feb 2024
Reporting date
Not listed
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