U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OMB APPROVAL OMB Number 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response.......0.5 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940 [_] Check box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). (Print or Type Responses) ________________________________________________________________________________ 1. Name and Address of Reporting Person* Peter G. Peterson -------------------------------------------------------------------------------- (Last) (First) (Middle) 345 Park Avenue, 31st Floor -------------------------------------------------------------------------------- (Street) New York, New York 10154 -------------------------------------------------------------------------------- (City) (State) (Zip) ________________________________________________________________________________ 2. Issuer Name and Ticker or Trading Symbol Premcor Inc. Symbol: PCO ________________________________________________________________________________ 3. I.R.S. Identification Number of Reporting Person, if an entity (Voluntary) ________________________________________________________________________________ 4. Statement for Month/Day/Year January 29, 2003 ________________________________________________________________________________ 5. If Amendment, Date of Original (Month/Day/Year) ________________________________________________________________________________ 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) [_] Director [X] 10% Owner [_] Officer (give title below) [_] Other (specify below) ________________________________________________________________________________ 7. Individual or Joint/Group Filing (Check Applicable Line) [X] Form filed by One Reporting Person [_] Form filed by More than One Reporting Person ________________________________________________________________________________ ================================================================================ Table I--Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned ================================================================================ 5. Amount 4. Securities Acquired of Securi- 6. Own- (A) or Disposed ties Bene- ership 2A Deemed 3. Trans- of (D) (Instr. ficially Form: Execution action 3, 4 and 5) Owned Follow- Direct 7. Nature of 2. Trans- Date, if Code ----------------------- ing Reported (D) or Indirect 1. Title of action any (Instr. 8) (A) Transaction(s) Indirect Beneficial Security Date (Month/ (Month/ ---------- Amount or Price (Instr. 3 (I) Ownership (Instr. 3) Day/Year) Day/Year) Code V (D) and 4) (Instr.4) (Instr. 4) ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 1/29/03 P 1,300,000 A $19.20 29,117,104 I See Note 1 ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ==================================================================================================================================== Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * If the form is filed by more than one reporting person, see Instruction 4(b)(v). (Over) SEC 1474 (3-99) Page 1 of 3 FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================ 9. Num- ber of 10. Own- Deriv- ership ative Form 5. Number 7. Title and Secur- of 2. Con- of Deri- Amount of ities Deriv- 11. version tive 6. Date Underlying Bene- ative Nature or 3A Securities Exercis- Securities ficially Secur- of Exer- Deemed Acquired able and Instr. 3 Owned ity: In- cise Execu- 4. Trans- (A) or Expiration and 4) 8. Price Follow- Direct direct Price 3. Trans- tion action Disposed Date (Month ------------- of Deri- ing (D) or Bene- 1. Title of action Date Code of (D) Day/Year) Amount vative Reported In- ficial of Deriva- Date Date if any (Instr. (Instr. 3, --------------- or Secur- Trans- direct Owner- tive ative (Month/ (Month/ 8) 4 and 5) Date Expira- Number ity actions (I) ship Security Secur- Day/ Day/ ------ ------------ Exer- tion of (Instr. (Instr. (Instr. (Instr. (Instr. 3) ity Year) Year) Code V (A) (D) cisable Date Title Shares 5) 4) 4) 4) ----------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ==================================================================================================================================== Explanation of Responses: (1) Blackstone Management Associates III L.L.C. ("BMA"), as General Partner of Blackstone Capital Partners III Merchant Banking Fund L.P., Blackstone Offshore Capital Partners III L.P. and Blackstone Family Investment Partnership III L.P. is deemed to beneficially own such shares held by such entities. The Reporting Person is a founding member of BMA and as such may be deemed to share beneficial ownership for the shares owned by Blackstone Capital Partners III Merchant Banking Fund L.P., Blackstone Offshore Capital Partners III L.P. and Blackstone Family Investment Partnership III L.P. Each of BMA and the Reporting Person disclaims beneficial ownership of such shares. Page 2 of 3 /s/ Peter G. Peterson --------------------------------------------- Date: January 31, 2003 ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure. Page 3 of 3