SEC Filings

Form	Description	Filing date	View
DEF 14A	Official notification to shareholders of matters to be brought to a vote ("Proxy")	Apr 05, 2023	View HTML 0001097149-23-000029.pdf 0001097149-23-000029.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
ARS	An annual report to security holders	Apr 05, 2023	View HTML 0001097149-23-000031.pdf
PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Mar 23, 2023	View HTML 0001097149-23-000020.pdf 0001097149-23-000020.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K	Report of unscheduled material events or corporate event	Mar 01, 2023	View HTML 0001097149-23-000015.pdf 0001097149-23-000015.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-K	Annual report which provides a comprehensive overview of the company for the past year	Feb 27, 2023	View HTML 0001097149-23-000013.pdf 0001097149-23-000013.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
4	Statement of changes in beneficial ownership of securities	Feb 23, 2023	View HTML 0001209191-23-012412.pdf 0001209191-23-012412.xls
4	Statement of changes in beneficial ownership of securities	Feb 23, 2023	View HTML 0001209191-23-012415.pdf 0001209191-23-012415.xls
4	Statement of changes in beneficial ownership of securities	Feb 23, 2023	View HTML 0001209191-23-012421.pdf 0001209191-23-012421.xls
4	Statement of changes in beneficial ownership of securities	Feb 23, 2023	View HTML 0001209191-23-012419.pdf 0001209191-23-012419.xls
4	Statement of changes in beneficial ownership of securities	Feb 23, 2023	View HTML 0001209191-23-012417.pdf 0001209191-23-012417.xls
SC 13G/A	An amendment to the SC 13G filing	Feb 14, 2023	View HTML 0000919574-23-001303.pdf 0000919574-23-001303.xls
SC 13G/A	An amendment to the SC 13G filing	Feb 09, 2023	View HTML 0001104659-23-015247.pdf
4	Statement of changes in beneficial ownership of securities	Feb 09, 2023	View HTML 0001209191-23-008205.pdf 0001209191-23-008205.xls
4	Statement of changes in beneficial ownership of securities	Feb 09, 2023	View HTML 0001209191-23-008207.pdf 0001209191-23-008207.xls
8-K	Report of unscheduled material events or corporate event	Feb 06, 2023	View HTML 0001097149-23-000009.pdf 0001097149-23-000009.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K	Report of unscheduled material events or corporate event	Feb 01, 2023	View HTML 0001097149-23-000005.pdf 0001097149-23-000005.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
SC 13G/A	An amendment to the SC 13G filing	Feb 01, 2023	View HTML 0001193125-23-021558.pdf 0001193125-23-021558.xls
SC 13G/A	An amendment to the SC 13G filing	Jan 31, 2023	View HTML 0001306550-23-005035.pdf
8-K	Report of unscheduled material events or corporate event	Dec 27, 2022	View HTML 0001097149-22-000069.pdf 0001097149-22-000069.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-Q	Quarterly report which provides a continuing view of a company's financial position	Nov 04, 2022	View HTML 0001097149-22-000067.pdf 0001097149-22-000067.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA