-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, NNqWX/9nK91aTJjdZ91aVqtB/tFPqwKPtPfIFNoA5/kbcjtjlpdiax2nAwRuvPKP qV5A5+Y2F52CH/Y5MY1+FQ== 0000716039-01-500014.txt : 20010726 0000716039-01-500014.hdr.sgml : 20010726 ACCESSION NUMBER: 0000716039-01-500014 CONFORMED SUBMISSION TYPE: 424B3 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20010725 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UNOCAL CORP CENTRAL INDEX KEY: 0000716039 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 953825062 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 424B3 SEC ACT: SEC FILE NUMBER: 033-63719 FILM NUMBER: 1688916 BUSINESS ADDRESS: STREET 1: 2141 ROSECRANS AVE STREET 2: STE 4000 CITY: EL SEGUNDO STATE: CA ZIP: 90245 BUSINESS PHONE: 3107267600 MAIL ADDRESS: STREET 1: 2141 ROSECRANS AVE STREET 2: STE 4000 CITY: EL SEGUNDO STATE: CA ZIP: 90245 424B3 1 drsupplement.txt Filed Pursuant to Rule 424(b)(3) File No. 33-63719 Supplement to the Unocal Corporation Dividend Reinvestment and Common Stock Purchase Plan Prospectus dated August 2, 1999 Mellon Bank, N.A., has succeeded to The Chase Manhattan Bank as the administrator for the Dividend Reinvestment and Common Stock Purchase Plan. Therefore, all references to The Chase Manhattan Bank in the Prospectus are changed to Mellon Bank. As a result of a change in its ownership, ChaseMellon Shareholder Services, L.L.C. has changed its name to Mellon Investor Services LLC. Therefore, all references to ChaseMellon Shareholder Services acting in various capacities described in the Prospectus are changed to Mellon Investor Services. The paragraph commencing at the bottom of page 5 of the Prospectus is deleted. Mellon Investor Services is also the Rights Agent under a Rights Agreement dated January 29, 2000, which replaced the Rights Agreement dated January 29, 1990, formerly referred to in the paragraph commencing at the bottom of page 5 of the Prospectus. July 25, 2001 -----END PRIVACY-ENHANCED MESSAGE-----