================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to section 13 or 15 (d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2003 PREMCOR INC. (Exact name of registrant as specified in its charter) Commission file number: 1-16827 Delaware 43-1851087 (State or other jurisdiction (I.R.S. Employer of incorporation or organization) Identification No.) 1700 East Putnam Avenue Suite 500 06870 Old Greenwich, Connecticut (Zip Code) (Address of principal executive offices) Registrant's telephone number, including area code: (203) 698-7500 ================================================================================ Page 1 of 4 Item 7. Financial Statements and Exhibits (c) Exhibits. Exhibit No. Description 99 Press release dated May 30, 2003 Item 9. Regulation FD Disclosure On May 30, 2003, Premcor Inc. issued a press release announcing that, based on industry refining margins and hydrocarbon prices for the quarter to date and assuming seasonal market conditions through the end of the quarter, it would expect its second quarter 2003 earnings to range between $.50 and $.75 per share. A copy of the press release is furnished hereto as Exhibit 99. Page 2 of 4 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Premcor Inc. (Registrant) /s/ Dennis R. Eichholz --------------------------------------- Dennis R. Eichholz Controller (principal accounting officer and duly authorized officer) May 30, 2003 Page 3 of 4 Exhibit Index Exhibit No. Description 99 Press release dated May 30, 2003 Page 4 of 4