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CleanTech Acquisition (CLAQW) SEC Filings & 10K Form

$0.04 +0.00 (+0.25%)
As of 09/12/2025

Recent CleanTech Acquisition SEC Filings

DateFilerForm TypeView
09/02/2025
3:16 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/02/2025
7:46 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/29/2025
7:35 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
08/13/2025
2:26 PM
KERBER WILLIAM XAVIER III (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
08/07/2025
6:23 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/28/2025
4:14 PM
Begaries Jimena (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 3
Initial statement of beneficial ownership of securities  
07/28/2025
3:33 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/28/2025
3:37 PM
Bellingham Jim (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
07/28/2025
3:39 PM
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Spiro Elliot (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
07/28/2025
3:42 PM
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Sharkawy Adam (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
07/28/2025
3:44 PM
FLORES WILLIAM (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
07/18/2025
5:11 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/18/2025
8:27 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
07/11/2025
3:09 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
07/01/2025
4:20 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/30/2025
4:27 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
06/25/2025
4:12 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/30/2025
9:54 AM
Bellingham Jim (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
05/30/2025
9:55 AM
FLORES WILLIAM (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
05/29/2025
11:15 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form EFFECT
05/29/2025
4:22 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K/A
05/15/2025
8:26 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form S-3/A
05/15/2025
6:05 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/18/2025
12:15 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form PRE 14A
04/17/2025
3:35 PM
Material Impact Fund II, L.P. (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
04/16/2025
6:17 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/15/2025
3:45 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 10-Q/A
04/15/2025
7:57 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 10-Q/A
04/15/2025
8:04 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 10-Q/A
04/10/2025
3:21 PM
KERBER WILLIAM XAVIER III (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
04/02/2025
3:38 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/01/2025
3:27 PM
Hay Victoria (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
03/31/2025
4:11 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form NT 10-K
03/28/2025
4:27 PM
Christ Robert Douglas (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 3
Initial statement of beneficial ownership of securities  
03/25/2025
3:34 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/19/2025
4:20 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/17/2025
5:34 PM
KERBER WILLIAM XAVIER III (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
03/05/2025
4:26 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/25/2025
4:55 PM
GIBSON JOHN W JR (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
02/25/2025
3:37 PM
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Sharkawy Adam (Reporting)
Form 5
Annual statement of changes in beneficial ownership of securities  
02/20/2025
4:16 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/14/2025
6:51 PM
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Spiro Elliot (Reporting)
Form 5
Annual statement of changes in beneficial ownership of securities  
02/14/2025
5:03 PM
Bellingham Jim (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 5
Annual statement of changes in beneficial ownership of securities  
02/14/2025
5:05 PM
FLORES WILLIAM (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 5
Annual statement of changes in beneficial ownership of securities  
02/12/2025
7:52 AM
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
SCHLUMBERGER LIMITED/NV (Filed by)
Form SCHEDULE 13G/A
02/07/2025
12:48 PM
KERBER WILLIAM XAVIER III (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
02/06/2025
8:50 AM
Inkeverse Group Ltd (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D/A
02/05/2025
6:02 AM
Inkeverse Group Ltd (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D
02/03/2025
4:26 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form S-3
Registration statement under Securities Act of 1933  
01/30/2025
12:28 PM
KERBER WILLIAM XAVIER III (Filed by)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
CleanTech Acquisition (Subject)
Nauticus Robotics, Inc. (Subject)
Nauticus Robotics, Inc. (Subject)
Form SCHEDULE 13D
01/29/2025
3:47 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/17/2025
3:20 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
01/17/2025
3:21 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
01/16/2025
5:12 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
01/15/2025
3:43 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/14/2025
7:21 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/14/2025
5:24 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
01/08/2025
4:46 PM
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Yamokoski John (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/07/2025
2:05 PM
GIBSON JOHN W JR (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
01/07/2025
7:00 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
01/06/2025
6:02 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/27/2024
5:13 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/20/2024
4:00 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form DEFA14A
12/18/2024
4:07 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form DEFA14A
12/11/2024
4:08 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/10/2024
5:03 PM
Hay Victoria (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
11/27/2024
7:14 PM
GIBSON JOHN W JR (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
11/26/2024
4:46 PM
FLORES WILLIAM (Reporting)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
CleanTech Acquisition (Issuer)
Nauticus Robotics, Inc. (Issuer)
Nauticus Robotics, Inc. (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
11/25/2024
8:25 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form DEF 14A
11/13/2024
5:12 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form PRE 14A
11/05/2024
7:34 AM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/20/2024
3:37 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
09/20/2024
3:40 PM
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
CleanTech Acquisition (Filer)
Nauticus Robotics, Inc. (Filer)
Nauticus Robotics, Inc. (Filer)
Form 424B3
(Data available from 1/1/2016 forward)


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This page (NASDAQ:CLAQW) was last updated on 9/14/2025 by MarketBeat.com Staff
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