$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 05 Jan 2016
FORM 4 SUBMISSION 05 Jan 2016
FORM 4 SUBMISSION 05 Jan 2016
FORM 4 SUBMISSION 05 Jan 2016
CORRESP 22 Dec 2015
8-K 09 Dec 2015
UPLOAD 08 Dec 2015
FORM 8-K 01 Dec 2015
FORM 8-K 17 Nov 2015
CORRESP 04 Nov 2015
10-Q 28 Oct 2015
8-K 22 Oct 2015
UPLOAD 21 Oct 2015
8-K 08 Sep 2015
CORRESP 31 Aug 2015
UPLOAD 17 Aug 2015
FORM 8-K 30 Jul 2015
10-Q 27 Jul 2015
LIVE FILING 23 Jul 2015
FORM 8-K 17 Jun 2015