X0202 4 2007-01-08 0 0001326160 Duke Energy CORP DUK 0001237305 HAUSER DAVID L 526 S. CHURCH STREET CHARLOTTE NC 28202 0 1 0 0 Grp Exec & CFO Stock Option (Right to Buy) 27.63 2007-01-08 4 D 0 18600 0 D 2002-02-17 2008-02-17 Common Stock 18600 0 D Stock Option (Right to Buy) 15.74 2007-01-08 4 A 0 18600 0 A 2002-02-17 2008-02-17 Common Stock 18600 18600 D Stock Option (Right to Buy) 29.66 2007-01-08 4 D 0 31800 0 D 2003-02-17 2009-02-17 Common Stock 31800 0 D Stock Option (Right to Buy) 16.89 2007-01-08 4 A 0 31800 0 A 2003-02-17 2009-02-17 Common Stock 31800 31800 D Stock Option (Right to Buy) 24.88 2007-01-08 4 D 0 37800 0 D 2003-12-20 2009-12-20 Common Stock 37800 0 D Stock Option (Right to Buy) 14.17 2007-01-08 4 A 0 37800 0 A 2003-12-20 2009-12-20 Common Stock 37800 37800 D Stock Option (Right to Buy) 42.81 2007-01-08 4 D 0 31200 0 D 2004-12-20 2010-12-20 Common Stock 31200 0 D Stock Option (Right to Buy) 24.38 2007-01-08 4 A 0 31200 0 A 2004-12-20 2010-12-20 Common Stock 31200 31200 D Stock Option (Right to Buy) 37.68 2007-01-08 4 D 0 32500 0 D 2005-12-19 2011-12-19 Common Stock 32500 0 D Stock Option (Right to Buy) 21.46 2007-01-08 4 A 0 32500 0 A 2005-12-19 2011-12-19 Common Stock 32500 32500 D Stock Option (Right to Buy) 38.33 2007-01-08 4 D 0 4700 0 D 2002-01-17 2012-01-17 Common Stock 4700 0 D Stock Option (Right to Buy) 21.83 2007-01-08 4 A 0 4700 0 A 2002-01-17 2012-01-17 Common Stock 4700 4700 D Stock Option (Right to Buy) 17.10 2007-01-08 4 D 0 5400 0 D 2003-01-28 2013-01-28 Common Stock 5400 0 D Stock Option (Right to Buy) 9.74 2007-01-08 4 A 0 5400 0 A 2003-01-28 2013-01-28 Common Stock 5400 5400 D Stock Option (Right to Buy) 13.77 2007-01-08 4 D 0 34200 0 D 2013-02-25 Common Stock 34200 0 D Stock Option (Right to Buy) 7.84 2007-01-08 4 A 0 34200 0 A 2013-02-25 Common Stock 34200 34200 D On January 2, 2007, Duke Energy Corporation (''Issuer'') spun off its natural gas businesses to form the stand-alone company Spectra Energy Corp. As a result, equitable adjustments were made to Duke Energy's outstanding stock option awards. Vested in four annual, equal installments beginning on February 25, 2004. By: David S. Maltz, Attorney-in-fact for 2007-01-10