SEC Filings

OTCPK: CTKYYNYSE: CTK
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FormDescriptionDateFormat
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActDec 14, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActDec 9, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActNov 30, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActNov 1, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActSep 10, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XBLR Viewer.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XBLR file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActSep 8, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActAug 16, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActJun 11, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActJun 3, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActApr 27, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActMar 25, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActMar 19, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActJan 25, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
6-KReport of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange ActJan 19, 2021Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in HTML.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in DOC file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in PDF file.Open Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act in XLS file.
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