ClearSign Technologies Corp reports

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

ClearSign Technologies Corp has filed 785 SEC EDGAR filings since 05 May 2008

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SEC filing history

Showing 376-400 of 784 matching filings.

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25

Current page

16

4

OWNERSHIP DOCUMENT

Filing date: 03 Jul 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Jul 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Jul 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Jul 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Jul 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

S-3 File 333-232402

S-3

Filing date: 27 Jun 2019
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: 12 Jun 2019
Reporting date: 11 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K/A File 001-35521

FORM 8-K/A

Filing date: 05 Jun 2019
Reporting date: 08 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 20 May 2019
Reporting date: 17 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-35521

FORM 10-Q

Filing date: 14 May 2019
Reporting date: 31 Mar 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 13 May 2019
Reporting date: 09 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 13 May 2019
Reporting date: 09 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 13 May 2019
Reporting date: 09 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 13 May 2019
Reporting date: 09 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 13 May 2019
Reporting date: 09 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 13 May 2019
Reporting date: 08 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

8-K

Filing date: 08 May 2019
Reporting date: 08 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 18 Apr 2019
Reporting date: 17 Apr 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-35521

DEF 14A

Filing date: 04 Apr 2019
Reporting date: 08 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 02 Apr 2019
Reporting date: 01 Apr 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

PRE 14A File 001-35521

PRE 14A

Filing date: 21 Mar 2019
Reporting date: 21 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 20 Mar 2019
Reporting date: 19 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-35521

8-K

Filing date: 19 Mar 2019
Reporting date: 19 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-35521

10-K

Filing date: 12 Mar 2019
Reporting date: 31 Dec 2018
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-35521

FORM 8-K

Filing date: 20 Feb 2019
Reporting date: 20 Feb 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

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