ClearSign Technologies Corp reports

Company location: Tulsa, OK
Fiscal year end: 31 December

ClearSign Technologies Corp has filed 781 SEC EDGAR filings since 05 May 2008

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SEC filing history

Showing 76-100 of 780 matching filings.

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25

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4

8-K File 001-35521

FORM 8-K

Filing date: 23 May 2025
Reporting date: 21 May 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-35521

10-Q

Filing date: 15 May 2025
Reporting date: 31 Mar 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

3

PRIMARY DOCUMENT

Filing date: 09 Apr 2025
Reporting date: 14 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13G File 005-86820

SCHEDULE 13G filing

Filing date: 09 Apr 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 04 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-286268

FORM S-8

Filing date: 31 Mar 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-35521

10-K

Filing date: 31 Mar 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 25 Feb 2025
Reporting date: 24 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 21 Feb 2025
Reporting date: 20 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13D/A File 005-86820

SCHEDULE 13D/A filing

Filing date: 19 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 06 Jan 2025
Reporting date: 02 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 06 Jan 2025
Reporting date: 02 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 06 Jan 2025
Reporting date: 02 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 06 Jan 2025
Reporting date: 02 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 09 Dec 2024
Reporting date: 06 Dec 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 21 Nov 2024
Reporting date: 20 Nov 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-35521

10-Q

Filing date: 14 Nov 2024
Reporting date: 30 Sep 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

UPLOAD File 001-35521

UPLOAD filing

Filing date: 08 Nov 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 07 Nov 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

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