Relationships Role Relationship Start Relationship End
Ubs Americas Inc. Parent 6/30/2007 6/16/2011
Ubs Americas Inc. Parent 12/30/2002 6/29/2007
Ubs Inc. Parent 6/29/1998 12/29/2002
Ubs Securities Llc Parent 2/4/1994 6/28/1998
Beacon Group Energy Investment Fund, L.P., The Subsidary 12/30/1996 6/28/1998
Vog Partners L.P. Subsidary 12/31/1996 3/31/1997
Sgllc Partners, L.P. Subsidary 12/31/1996 3/31/1997
Ai Partners, L.P. Subsidary 7/29/1996 3/31/1997
Lpp Partners, L.P. Subsidary 12/29/1995 3/31/1997
Mpc Partners, Inc. Subsidary 8/26/1996 3/31/1997
Npc Partners, L.P. Subsidary 12/29/1995 3/31/1997
Qt Partners, L.P. Subsidary 10/4/1995 3/31/1997
Spc Partners, L.P. Subsidary 10/29/1996 3/31/1997
Vog Partners L.P. Subsidary 2/13/1995 12/30/1996
Sgllc Partners, L.P. Subsidary 6/1/1995 12/30/1996
Beacon Group Energy Investment Fund, L.P., The Subsidary 12/31/1994 12/29/1996