$PTEN SEC Filings

Filing Filed On
425 13 Dec 2016
FORM 8-K 13 Dec 2016
FORM 8-K 13 Dec 2016
FORM 8-K 29 Nov 2016
PTEN-Q3-20160930 31 Oct 2016
PTEN-8K-20161027 27 Oct 2016
FORM 8-K 21 Sep 2016
FORM 8-K 06 Sep 2016
FORM 4 SUBMISSION 02 Aug 2016
PTEN-Q2-20160630 02 Aug 2016
FORM 8-K 28 Jul 2016
8-K 12 Jul 2016
8-K 28 Jun 2016
FORM 4 SUBMISSION 10 Jun 2016
FORM 4 SUBMISSION 10 Jun 2016
LIVE FILING 02 Jun 2016
FORM 8-K 24 May 2016
8-K 10 May 2016
10-Q 02 May 2016
8-K 28 Apr 2016