05/10/2024 4:03 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/08/2024 3:15 PM | ClearSign Technologies (Filer)
| Form D Notice of Exempt Offering of Securities | |
04/26/2024 3:45 PM | ClearSign Technologies (Filer)
| Form 10-K/A | |
04/25/2024 4:16 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/24/2024 7:45 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/23/2024 6:00 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/23/2024 5:02 AM | ClearSign Technologies (Filer)
| Form 424B5 | |
|
04/19/2024 7:45 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/19/2024 5:02 AM | ClearSign Technologies (Filer)
| Form 424B5 | |
04/10/2024 4:00 PM | ClearSign Technologies (Issuer) Hinds Brent (Reporting)
| Form 4/A | |
04/02/2024 4:32 PM | ClearSign Technologies (Issuer) de Lacy Catharine (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
04/02/2024 4:34 PM | ClearSign Technologies (Issuer) HOFFMAN Robert Thurston Sr (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
04/02/2024 4:36 PM | ClearSign Technologies (Issuer) Schrecker Judith S (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
04/01/2024 6:02 AM | ClearSign Technologies (Filer)
| Form 10-K Annual report pursuant to Section 13 or 15(d) | |
04/01/2024 6:06 AM | ClearSign Technologies (Filer)
| Form S-8 Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
03/19/2024 5:04 AM | ClearSign Technologies (Subject)
| Form FWP | |
03/18/2024 5:01 AM | ClearSign Technologies (Filer)
| Form 424B5 | |
03/18/2024 5:05 AM | ClearSign Technologies (Filer)
| Form 424B5 | |
02/07/2024 7:45 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
02/06/2024 3:45 PM | ClearSign Technologies (Issuer) Hinds Brent (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
02/05/2024 10:31 AM | ClearSign Technologies (Subject) clirSPV LLC (Filed by)
| Form SC 13D/A | |
02/02/2024 5:58 PM | ClearSign Technologies (Issuer) clirSPV LLC (Reporting) GPclirSPV LLC (Reporting) HOFFMAN Robert Thurston Sr (Reporting) Princeton Opportunity Management LLC (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/05/2024 3:30 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
01/03/2024 3:30 PM | ClearSign Technologies (Issuer) de Lacy Catharine (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/03/2024 3:31 PM | ClearSign Technologies (Issuer) HOFFMAN Robert Thurston Sr (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/03/2024 3:31 PM | ClearSign Technologies (Issuer) Schrecker Judith S (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/27/2023 4:25 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
10/04/2023 4:40 PM | ClearSign Technologies (Issuer) Schrecker Judith S (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
10/04/2023 4:47 PM | ClearSign Technologies (Issuer) de Lacy Catharine (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
10/04/2023 4:25 PM | ClearSign Technologies (Issuer) DiElsi Gary J. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
10/04/2023 4:30 PM | ClearSign Technologies (Issuer) HOFFMAN Robert Thurston Sr (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
09/01/2023 3:31 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
09/01/2023 3:15 PM | ClearSign Technologies (Filer)
| Form 424B3 | |
08/30/2023 11:15 PM | ClearSign Technologies (Filer)
| Form EFFECT | |
08/29/2023 3:15 PM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
08/14/2023 7:01 AM | ClearSign Technologies (Filer)
| Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
08/11/2023 4:15 PM | ClearSign Technologies (Filer)
| Form 8-A12B/A | |
07/06/2023 2:48 PM | ClearSign Technologies (Issuer) DiElsi Gary J. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/06/2023 2:48 PM | ClearSign Technologies (Issuer) HOFFMAN Robert Thurston Sr (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/15/2023 7:45 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/30/2023 5:07 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
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05/24/2023 5:08 AM | ClearSign Technologies (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |