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1849867NASDAQ: CLST
YearTrailing 12-MonthsCalendar Year 2026Calendar Year 2025Calendar Year 2024Calendar Year 2023Calendar Year 2022Calendar Year 2021
ViewAll FilingsAnnual FilingsQuarterly FilingsCurrent FilingsRegistration StatementsSection 16Proxy & Information StatementsOther
FormDescriptionDateFormat
8-KReport of unscheduled material events or corporate eventMay 21, 2026Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
10-QQuarterly report which provides a continuing view of a company's financial positionMay 15, 2026Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.
8-KReport of unscheduled material events or corporate eventApr 30, 2026Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
SCHEDULE 13GSCHEDULE 13GApr 29, 2026Open SCHEDULE 13G in HTML.Open SCHEDULE 13G in DOC file.Open SCHEDULE 13G in PDF file.Open SCHEDULE 13G in XLS file.
DEF 14AOfficial notification to shareholders of matters to be brought to a vote ("Proxy")Apr 14, 2026Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in HTML.Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in DOC file.Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in PDF file.Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in XLS file.Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in XBLR Viewer.Open Official notification to shareholders of matters to be brought to a vote ("Proxy") in XBLR file.
ARSAn annual report to security holders.Apr 14, 2026Open An annual report to security holders. in HTML.Open An annual report to security holders. in DOC file.Open An annual report to security holders. in PDF file.Open An annual report to security holders. in XLS file.
SCHEDULE 13D/ASCHEDULE 13D/AApr 13, 2026Open SCHEDULE 13D/A in HTML.Open SCHEDULE 13D/A in DOC file.Open SCHEDULE 13D/A in PDF file.Open SCHEDULE 13D/A in XLS file.
8-KReport of unscheduled material events or corporate eventApr 8, 2026Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
10-KAnnual report which provides a comprehensive overview of the company for the past yearMar 31, 2026Open Annual report which provides a comprehensive overview of the company for the past year in HTML.Open Annual report which provides a comprehensive overview of the company for the past year in DOC file.Open Annual report which provides a comprehensive overview of the company for the past year in PDF file.Open Annual report which provides a comprehensive overview of the company for the past year in XLS file.Open Annual report which provides a comprehensive overview of the company for the past year in XBLR Viewer.Open Annual report which provides a comprehensive overview of the company for the past year in XBLR file.
SCHEDULE 13G/ASCHEDULE 13G/AMar 26, 2026Open SCHEDULE 13G/A in HTML.Open SCHEDULE 13G/A in DOC file.Open SCHEDULE 13G/A in PDF file.Open SCHEDULE 13G/A in XLS file.
SCHEDULE 13G/ASCHEDULE 13G/AFeb 13, 2026Open SCHEDULE 13G/A in HTML.Open SCHEDULE 13G/A in DOC file.Open SCHEDULE 13G/A in PDF file.Open SCHEDULE 13G/A in XLS file.
5Annual filing director officer or owner of more than ten percent.Feb 5, 2026Open Annual filing director officer or owner of more than ten percent. in HTML.Open Annual filing director officer or owner of more than ten percent. in DOC file.Open Annual filing director officer or owner of more than ten percent. in PDF file.Open Annual filing director officer or owner of more than ten percent. in XLS file.
8-KReport of unscheduled material events or corporate eventJan 29, 2026Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
SCHEDULE 13D/ASCHEDULE 13D/AJan 12, 2026Open SCHEDULE 13D/A in HTML.Open SCHEDULE 13D/A in DOC file.Open SCHEDULE 13D/A in PDF file.Open SCHEDULE 13D/A in XLS file.
4Statement of changes in beneficial ownership of securitiesDec 22, 2025Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
8-KReport of unscheduled material events or corporate eventNov 21, 2025Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
10-QQuarterly report which provides a continuing view of a company's financial positionNov 13, 2025Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.
8-KReport of unscheduled material events or corporate eventNov 6, 2025Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
SCHEDULE 13DSCHEDULE 13DOct 30, 2025Open SCHEDULE 13D in HTML.Open SCHEDULE 13D in DOC file.Open SCHEDULE 13D in PDF file.Open SCHEDULE 13D in XLS file.
4Statement of changes in beneficial ownership of securitiesOct 30, 2025Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
144Non-EDGAR filing submitted by "insiders" prior to intended sale of restricted stockOct 28, 2025Open Non-EDGAR filing submitted by "insiders" prior to intended sale of restricted stock in HTML.Open Non-EDGAR filing submitted by "insiders" prior to intended sale of restricted stock in DOC file.Open Non-EDGAR filing submitted by "insiders" prior to intended sale of restricted stock in PDF file.Open Non-EDGAR filing submitted by "insiders" prior to intended sale of restricted stock in XLS file.
8-KReport of unscheduled material events or corporate eventOct 23, 2025Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.Open Report of unscheduled material events or corporate event in XBLR Viewer.Open Report of unscheduled material events or corporate event in XBLR file.
4Statement of changes in beneficial ownership of securitiesSep 2, 2025Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4Statement of changes in beneficial ownership of securitiesSep 2, 2025Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4Statement of changes in beneficial ownership of securitiesSep 2, 2025Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
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