X0202 4 2004-09-30 0 0000716039 UNOCAL CORP UCL 0001183513 CECIL JOE D UNOCAL CORPORATION 2141 ROSECRANS AVE, SUITE 4000 EL SEGUNDO CA 90245 0 1 0 0 VP & Comptroller Common Stock $1.00 Par Value 2004-09-30 4 M 0 2976. 38.8125 A 8960. D Common Stock $1.00 Par Value 2004-09-30 4 M 0 6332. 38.6875 A 15292. D Common Stock $1.00 Par Value 2004-09-30 4 M 0 7291. 37.0313 A 22583. D Common Stock $1.00 Par Value 2004-09-30 4 M 0 7819. 36.26 A 30402. D Common Stock $1.00 Par Value 2004-09-30 4 M 0 6610. 34.725 A 37012. D Common Stock $1.00 Par Value 2004-09-30 4 S 0 31028. 42.94 D 5984. D Common Stock $1.00 Par Value 6822. I By Family Trust Common Stock $1.00 Par Value 2004-06-30 5 A 0 175.931 0.00 A 9557.752 I Unocal Savings Plan Option (Right to Buy) 38.8125 2004-09-30 4 M 0 2976. 0.00 D 1997-09-24 2007-03-24 Common Stock $1.00 Par Value 2976. 0. D Option (Right to Buy) 38.6875 2004-09-30 4 M 0 6332. 0.00 D 1998-09-30 2008-03-30 Common Stock $1.00 Par Value 6332. 0. D Option (Right to Buy) 37.0313 2004-09-30 4 M 0 7291. 0.00 D 1999-09-29 2009-03-29 Common Stock $1.00 Par Value 7291. 0. D Option (Right to Buy) 36.26 2004-09-30 4 M 0 7819. 0.00 D 2001-08-12 2011-02-12 Common Stock $1.00 Par Value 7819. 0. D Option (Right to Buy) 34.725 2004-09-30 4 M 0 6610. 0.00 D 2002-08-12 2012-02-12 Common Stock $1.00 Par Value 6610. 2203. D Common Stock has attached Preferred Stock Purchase Rights. If and when the Rights become exercisable, the holders would initially be entitled to purchase one one-hundredth of a share of Series B Junior Participating Preferred stock at a purchase price determined pursuant to the Rights Agreement. Shares are purchased at prevailing market prices by the trustee of the Unocal Savings Plan The option became exercisable in four equal installments on 9/24/1997, 3/24/1998, 3/24/1999 and 3/24/2000. The option became exercisable in four equal installments on 9/30/1998, 3/30/1999, 3/30/2000 and 3/30/2001. The option became exercisable in four equal installments on 9/29/1999, 3/29/2000, 3/29/2001 and 3/29/2002. The option became exercisable in four equal installments on 8/12/2001, 2/12/2002, 2/12/2003 and 2/12/2004. The option becomes exercisable in four equal installments on 8/12/2002, 2/12/2003, 2/12/2004 and 2/12/2005. Paul R. Moore, Asst Secretary, Attorney-In-Fact 2004-10-04