$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 26 Apr 2018
CORRESP 25 Apr 2018
DEF 14A 24 Apr 2018
DEFA14A 24 Apr 2018
UPLOAD 18 Apr 2018
PRE 14A 13 Apr 2018
FORM 3 SUBMISSION 05 Apr 2018
FORM 4 SUBMISSION 05 Apr 2018
8-K 03 Apr 2018
8-K 27 Mar 2018
8-K-SSE-2017 PRO FORMA 19 Mar 2018
FORM 4 SUBMISSION 14 Mar 2018
8-K 06 Mar 2018
10-K 20 Feb 2018
8-K INVESTOR PRESENTATION FEB 13, 2018 13 Feb 2018
SCHEDULE 13G/A 09 Feb 2018
SC 13G/A 09 Feb 2018
8-K Q4 17 PRESS RELEASE 08 Feb 2018
SEC SCHEDULE 13G 08 Feb 2018
SC 13G/A 29 Jan 2018