X0202 4 2004-04-30 0 0000716039 UNOCAL CORP UCL 0001183513 CECIL JOE D UNOCAL CORPORATION 2141 ROSECRANS AVE, SUITE 4000 EL SEGUNDO CA 90245 0 1 0 0 Comptroller & VP Common Stock $1.00 Par Value 2004-04-30 4 F 0 516. 36.27 D 6657. D Common Stock $1.00 Par Value 2004-04-30 5 G 0 922. 0.00 D 5735. D Common Stock $1.00 Par Value 2004-04-30 5 G 0 922. 0.00 A 6822. I By Family Trust Common Stock $1.00 Par Value 2004-03-31 5 A 0 149.428 0.00 A 9381.821 I Unocal Savings Plan 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 were canceled in payment of withholding taxes opon the lapse of restrictions on 1,438 shares of restricted stock that was received upon the exercise of stock options on 4/30/1999 Shares are purchased at prevailing market prices by the trustee of the Unocal Savings Plan Joe Cecil 2004-05-03