$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 04 May 2017
FORM 4 SUBMISSION 04 May 2017
PTEN-Q1-20170331 02 May 2017
FORM 4 SUBMISSION 27 Apr 2017
PTEN-8K-20170126 27 Apr 2017
S-8 21 Apr 2017
FORM 8-K 21 Apr 2017
FORM 8-K 12 Apr 2017
FORM 8-K 12 Apr 2017
EFFECT 22 Mar 2017
424B3 22 Mar 2017
CORRESP 22 Mar 2017
FORM 8-K 22 Mar 2017
FORM 8-K 22 Mar 2017
CORRESP 21 Mar 2017
FORM 10-K/A 13 Mar 2017
AMENDMENT NO. 2 TO FORM S-4 13 Mar 2017
CORRESP 13 Mar 2017
FORM 4 SUBMISSION 08 Mar 2017
FORM 8-K 07 Mar 2017