$HE SEC Filings

Filing Filed On
S-3ASR 28 Mar 2012
AUTO-GENERATED PAPER DOCUMENT 27 Mar 2012
DEFA14A 22 Mar 2012
DEF 14A 22 Mar 2012
PRIMARY DOCUMENT 05 Mar 2012
8-K 05 Mar 2012
8-K 02 Mar 2012
10-K 17 Feb 2012
8-K 09 Feb 2012
8-K 09 Feb 2012
PRIMARY DOCUMENT 09 Feb 2012
PRIMARY DOCUMENT 09 Feb 2012
PRIMARY DOCUMENT 09 Feb 2012
PRIMARY DOCUMENT 09 Feb 2012
SC 13G 09 Feb 2012
PRIMARY DOCUMENT 07 Feb 2012
PRIMARY DOCUMENT 07 Feb 2012
PRIMARY DOCUMENT 07 Feb 2012
PRIMARY DOCUMENT 07 Feb 2012
PRIMARY DOCUMENT 07 Feb 2012