SEC Filings

Form	Description	Filing date	View
4	Statement of changes in beneficial ownership of securities	May 19, 2022	View HTML 0001209191-22-030710.pdf 0001209191-22-030710.xls
4	Statement of changes in beneficial ownership of securities	May 19, 2022	View HTML 0001209191-22-030713.pdf 0001209191-22-030713.xls
4	Statement of changes in beneficial ownership of securities	May 13, 2022	View HTML 0001209191-22-028926.pdf 0001209191-22-028926.xls
CORRESP	CORRESP	May 11, 2022	View HTML 0001097149-22-000039.pdf 0001097149-22-000039.xls
4	Statement of changes in beneficial ownership of securities	May 05, 2022	View HTML 0001209191-22-027428.pdf 0001209191-22-027428.xls
10-Q	Quarterly report which provides a continuing view of a company's financial position	May 05, 2022	View HTML 0001097149-22-000036.pdf 0001097149-22-000036.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K	Report of unscheduled material events or corporate event	May 02, 2022	View HTML 0001097149-22-000029.pdf 0001097149-22-000029.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K/A	Amendment to a previously filed 8-K	May 02, 2022	View HTML 0001097149-22-000031.pdf 0001097149-22-000031.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
UPLOAD	UPLOAD	Apr 29, 2022	View HTML 0000000000-22-004647.pdf
8-K	Report of unscheduled material events or corporate event	Apr 27, 2022	View HTML 0001097149-22-000025.pdf 0001097149-22-000025.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
CORRESP	CORRESP	Apr 21, 2022	View HTML 0001097149-22-000022.pdf 0001097149-22-000022.xls
CORRESP	CORRESP	Apr 12, 2022	View HTML 0001097149-22-000019.pdf 0001097149-22-000019.xls
DEFA14A	Additional proxy soliciting materials - definitive	Apr 05, 2022	View HTML 0001097149-22-000016.pdf
DEF 14A	Official notification to shareholders of matters to be brought to a vote ("Proxy")	Apr 05, 2022	View HTML 0001097149-22-000015.pdf 0001097149-22-000015.xls
UPLOAD	UPLOAD	Mar 31, 2022	View HTML 0000000000-22-003494.pdf
10-K	Annual report which provides a comprehensive overview of the company for the past year	Feb 25, 2022	View HTML 0001097149-22-000011.pdf 0001097149-22-000011.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
4	Statement of changes in beneficial ownership of securities	Feb 24, 2022	View HTML 0001209191-22-012813.pdf 0001209191-22-012813.xls
4	Statement of changes in beneficial ownership of securities	Feb 24, 2022	View HTML 0001209191-22-012816.pdf 0001209191-22-012816.xls
4	Statement of changes in beneficial ownership of securities	Feb 24, 2022	View HTML 0001209191-22-012819.pdf 0001209191-22-012819.xls
4	Statement of changes in beneficial ownership of securities	Feb 24, 2022	View HTML 0001209191-22-012822.pdf 0001209191-22-012822.xls