$CRK SEC Filings

Filing Filed On
4 04 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
PRIMARY DOCUMENT 03 Jun 2020
4 20 May 2020
PRIMARY DOCUMENT 14 May 2020
PRIMARY DOCUMENT 14 May 2020
PRIMARY DOCUMENT 14 May 2020
PRIMARY DOCUMENT 02 Apr 2020
PRIMARY DOCUMENT 02 Mar 2020
PRIMARY DOCUMENT 30 Dec 2019
PRIMARY DOCUMENT 03 Dec 2019