$HES SEC Filings

Filing Filed On
DEFA14A 06 May 2013
DEFA14A 03 May 2013
DEFA14A 02 May 2013
DEFA14A 02 May 2013
DEFA14A 01 May 2013
DEFA14A 30 Apr 2013
DEFA14A 25 Apr 2013
DEFA14A 25 Apr 2013
DEFA14A 24 Apr 2013
DEFA14A 17 Apr 2013
DEFA14A 15 Apr 2013
DEFA14A 15 Apr 2013
DEFA14A 04 Apr 2013
DEFA14A 04 Apr 2013
DEFA14A 26 Mar 2013
DEFA14A 26 Mar 2013
DEFINITIVE ADDITIONAL MATERIALS 11 Mar 2013
DEFA14A 04 Mar 2013
DEFA14A 04 Mar 2013
DEFA14A 04 Mar 2013