Latest filings (excl ownership)
8-K
ClearSign Technologies Corporation Provides Full Year 2023 Update
25 Apr 24
8-K
ClearSign Technologies Corporation Announces Closing of $9.3 Million Public Offering and Concurrent Private Placement of Common Stock and Warrants
24 Apr 24
8-K
Entry into a Material Definitive Agreement
23 Apr 24
424B5
Prospectus supplement for primary offering
23 Apr 24
8-K
ClearSign Technologies Corporation Announces Pricing of $9.3 Million Public Offering and Concurrent Private Placement of Common Stock and Warrants
19 Apr 24
424B5
Prospectus supplement for primary offering
19 Apr 24
S-8
Registration of securities for employees
1 Apr 24
10-K
2023 FY
Annual report
1 Apr 24
FWP
Free writing prospectus
19 Mar 24
424B5
Prospectus supplement for primary offering
18 Mar 24
424B5
Prospectus supplement for primary offering
18 Mar 24
8-K
ClearSign Technologies Corporation Provides Preliminary 2023 Financial Results
7 Feb 24
8-K
Entry into a Material Definitive Agreement
5 Jan 24
8-K
Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard
27 Nov 23
8-K
ClearSign Technologies Corporation Provides Third Quarter 2023 Update
15 Nov 23
10-Q
2023 Q3
Quarterly report
14 Nov 23
8-K
Receives Support and Collaboration from SoCalGas for its Flexible Hydrogen Fueled Ultra Low NOx Process Burner Project
22 Sep 23
8-K
ClearSign Technologies Corporation Provides Second Quarter 2023 Update
1 Sep 23
424B3
Prospectus supplement
1 Sep 23
EFFECT
Notice of effectiveness
31 Aug 23
8-K
Other Events
29 Aug 23
8-A12B/A
Registration of securities on exchange (amended)
14 Aug 23
10-Q
2023 Q2
Quarterly report
14 Aug 23
8-A12B/A
Registration of securities on exchange (amended)
11 Aug 23
S-3
Shelf registration
11 Aug 23
8-K
Announces Reincorporation in the State of Delaware
15 Jun 23
8-K
Submission of Matters to a Vote of Security Holders
8 Jun 23
8-K
Other Events
30 May 23
8-K
ClearSign Technologies Corporation Provides First Quarter 2023 Update
24 May 23
10-Q
2023 Q1
Quarterly report
15 May 23
8-K
Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard
2 May 23
ARS
2022 FY
Annual report to shareholders
25 Apr 23
DEFA14A
Additional proxy soliciting materials
25 Apr 23
DEF 14A
Definitive proxy
25 Apr 23
PRE 14A
Preliminary proxy
14 Apr 23
8-K
ClearSign Technologies Corporation Provides Full Year 2022 Update
7 Apr 23
S-8
Registration of securities for employees
31 Mar 23
10-K
2022 FY
Annual report
31 Mar 23
8-K
ClearSign Technologies Corporation Announces Board Transitions
24 Feb 23
8-K
Regulation FD Disclosure
9 Dec 22
Latest ownership filings
4
David M Maley
25 Apr 24
3
David M Maley
25 Apr 24
4/A
Brent Hinds
10 Apr 24
4
Judith S Schrecker
2 Apr 24
4
Robert Thurston HOFFMAN Sr
2 Apr 24
4
Lacy Catharine de
2 Apr 24
4
Brent Hinds
26 Feb 24
4/A
Brent Hinds
26 Feb 24
4/A
Brent Hinds
26 Feb 24
4
Colin James Deller
26 Feb 24
4/A
Colin James Deller
26 Feb 24
4
Brent Hinds
6 Feb 24
SC 13D/A
clirSPV LLC
5 Feb 24
4
Robert Thurston HOFFMAN Sr
2 Feb 24
4
Judith S Schrecker
3 Jan 24
4
Robert Thurston HOFFMAN Sr
3 Jan 24
4
Lacy Catharine de
3 Jan 24
4
Lacy Catharine de
4 Oct 23
4
Judith S Schrecker
4 Oct 23
4
Robert Thurston HOFFMAN Sr
4 Oct 23
4
Gary J. DiElsi
4 Oct 23
4
Lacy Catharine de
6 Jul 23
4
Judith S Schrecker
6 Jul 23
4
Robert Thurston HOFFMAN Sr
6 Jul 23
4
Gary J. DiElsi
6 Jul 23
4
Judith S Schrecker
5 Apr 23
4
Lacy Catharine de
4 Apr 23
4
Robert Thurston HOFFMAN Sr
4 Apr 23
4
Gary J. DiElsi
4 Apr 23
4
Lacy Catharine de
23 Feb 23
3
Lacy Catharine de
23 Feb 23
4
Brent Hinds
14 Feb 23
4
Colin James Deller
14 Feb 23
4
Gary J. DiElsi
4 Jan 23
4
Judith S Schrecker
4 Jan 23
4
Susanne Meline
4 Jan 23
4
Robert Thurston HOFFMAN Sr
4 Jan 23
4
Judith S Schrecker
4 Oct 22
4
Susanne Meline
4 Oct 22
4
Robert Thurston HOFFMAN Sr
4 Oct 22