$CRK SEC Filings

Filing Filed On
PRIMARY DOCUMENT 22 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 08 Feb 2018
PRIMARY DOCUMENT 02 Jan 2018
PRIMARY DOCUMENT 28 Dec 2017
PRIMARY DOCUMENT 28 Dec 2017
PRIMARY DOCUMENT 06 Dec 2017
PRIMARY DOCUMENT 01 Sep 2017
PRIMARY DOCUMENT 18 May 2017
PRIMARY DOCUMENT 18 May 2017
PRIMARY DOCUMENT 18 May 2017
PRIMARY DOCUMENT 18 May 2017