OMB APPROVAL -------------------------- OMB Number: 3235-0145 -------------------------- Expires: December 31, 2005 -------------------------- Estimated average burden hours per response......11 -------------------------- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.___)* Premcor Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 74045Q -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2002 -------------------------------------------------------------------------------- (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [_] Rule 13d-1(b) [_] Rule 13d-1(c) [X] Rule 13d-1(d) * The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 1 of 15 CUSIP No. 74045Q 13G Page 2 of 15 Pages ________________________________________________________________________________ 1. Name of Reporting Person: Blackstone Management Associates III L.L.C. I.R.S. Identification Nos. of above persons (entities only): ________________________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC Use Only ________________________________________________________________________________ 4. Citizenship or Place of Organization: Delaware ________________________________________________________________________________ NUMBER OF 5. Sole Voting Power: 27,817,104 SHARES _________________________________________________________________ BENEFICIALLY 6. Shared Voting Power: 0 OWNED BY _________________________________________________________________ EACH 7. Sole Dispositive Power: 27,817,104 REPORTING _________________________________________________________________ PERSON 8. Shared Dispositive Power: 0 WITH ________________________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 27,817,104 ________________________________________________________________________________ 10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [_] ________________________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 47.9% ________________________________________________________________________________ 12. Type of Reporting Person (See Instructions): OO Page 2 of 15 CUSIP No. 74045Q 13G Page 3 of 15 Pages ________________________________________________________________________________ 1. Name of Reporting Person: Blackstone Capital Partners III Merchant Banking Fund L.P. I.R.S. Identification Nos. of above persons (entities only): ________________________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC Use Only ________________________________________________________________________________ 4. Citizenship or Place of Organization: Delaware ________________________________________________________________________________ NUMBER OF 5. Sole Voting Power: 22,193,918 SHARES _________________________________________________________________ BENEFICIALLY 6. Shared Voting Power: 0 OWNED BY _________________________________________________________________ EACH 7. Sole Dispositive Power: 22,193,918 REPORTING _________________________________________________________________ PERSON 8. Shared Dispositive Power: 0 WITH ________________________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 22,193,918 ________________________________________________________________________________ 10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [_] ________________________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 38.2% ________________________________________________________________________________ 12. Type of Reporting Person (See Instructions): PN Page 3 of 15 CUSIP No. 74045Q 13G Page 4 of 15 Pages ________________________________________________________________________________ 1. Name of Reporting Person: Blackstone Offshore Capital Partners III L.P. I.R.S. Identification Nos. of above persons (entities only) ________________________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group: (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC Use Only ________________________________________________________________________________ 4. Citizenship or Place of Organization: Cayman Islands ________________________________________________________________________________ NUMBER OF 5. Sole Voting Power: 3,954,154 SHARES _________________________________________________________________ BENEFICIALLY 6. Shared Voting Power: 0 OWNED BY _________________________________________________________________ EACH 7. Sole Dispositive Power: 3,954,154 REPORTING _________________________________________________________________ PERSON 8. Shared Dispositive Power: 0 WITH ________________________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 3,954,154 ________________________________________________________________________________ 10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [_] ________________________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 6.8% ________________________________________________________________________________ 12. Type of Reporting Person (See Instructions): PN Page 4 of 15 CUSIP No. 74045Q 13G Page 5 of 15 Pages ________________________________________________________________________________ 1. Name of Reporting Person: Peter G. Peterson I.R.S. Identification Nos. of above persons (entities only): ________________________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC Use Only ________________________________________________________________________________ 4. Citizenship or Place of Organization: United States ________________________________________________________________________________ NUMBER OF 5. Sole Voting Power: 27,817,104 SHARES _________________________________________________________________ BENEFICIALLY 6. Shared Voting Power: 0 OWNED BY _________________________________________________________________ EACH 7. Sole Dispositive Power: 27,817,104 REPORTING _________________________________________________________________ PERSON 8. Shared Dispositive Power: WITH ________________________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 27,817,104 ________________________________________________________________________________ 10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [_] ________________________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 47.9% ________________________________________________________________________________ 12. Type of Reporting Person (See Instructions): IN Page 5 of 15 CUSIP No. 74045Q 13G Page 6 of 15 Pages ________________________________________________________________________________ 1. Name of Reporting Person: Stephen A. Schwarzman I.R.S. Identification Nos. of above persons (entities only): ________________________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC Use Only ________________________________________________________________________________ 4. Citizenship or Place of Organization: United States ________________________________________________________________________________ NUMBER OF 5. Sole Voting Power: 27,817,104 SHARES _________________________________________________________________ BENEFICIALLY 6. Shared Voting Power: 0 OWNED BY _________________________________________________________________ EACH 7. Sole Dispositive Power: 27,817,104 REPORTING _________________________________________________________________ PERSON 8. Shared Dispositive Power: 0 WITH ________________________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 27,817,104 ________________________________________________________________________________ 10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [_] ________________________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 47.9% ________________________________________________________________________________ 12. Type of Reporting Person (See Instructions): IN Page 6 of 15 Item 1(a). Name of Issuer: Premcor Inc. __________________________________________________________________ Item 1(b). Address of Issuer's Principal Executive Offices: 1700 E. Putnam Avenue, Suite 500, Old Greenwich, CT 06870 __________________________________________________________________ Item 2(a). Name of Person Filing: Blackstone Management Associates III L.L.C. Blackstone Capital Partners III Merchant Banking Fund L.P. Blackstone Offshore Capital Partners III L.P. Peter G. Peterson Stephen A. Schwarzman __________________________________________________________________ Item 2(b). Address of Principal Business Office, or if None, Residence: c/o Blackstone Management Associates III L.L.C. 345 Park Avenue, New York, New York 10154 __________________________________________________________________ Item 2(c). Citizenship: Blackstone Management Associates III L.L.C. - Delaware Blackstone Capital Partners III Merchant Banking Fund L.P. - Delaware Blackstone Offshore Capital Partners III L.P. - Cayman Islands Peter G. Peterson - United States Stephen A. Schwarzman - United States __________________________________________________________________ Item 2(d). Title of Class of Securities: Common Stock, par value $.01 per share __________________________________________________________________ Item 2(e). CUSIP Number: 74045Q __________________________________________________________________ Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) [_] Broker or dealer registered under Section 15 of the Exchange Act. (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act. (c) [_] Insurance company as defined in Section 3(a)(19) of the Exchange Act. Page 7 of 15 (d) [_] Investment company registered under Section 8 of the Investment Company Act. (e) [_] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [_] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [_] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [_] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). __________________________________________________________________ Item 4. Ownership. (a) Amount beneficially owned: Blackstone Capital Partners III Merchant Banking Fund L.P., a Delaware limited partnership ("BCP III") is the record holder of 22,193,918 shares of the identified class of securities and Blackstone Offshore Capital Partners III L.P., a Cayman Islands exempted limited partnership ("BOCP III") is the record holder of 3,954,154 shares of the identified class of securities. Blackstone Family Investment Partnership III L.P., a Delaware limited partnership ("BFIP III") is the record holder of 1,669,032 shares of the identified class of securities. As the sole general partner of each of BCP III and BFIP III and the sole investment general partner of BCOP III, Blackstone Management Associates III L.L.C., a Delaware limited liability company ("BMA III") may be deemed to be the beneficial owner of 27,817,104 shares of the identified securities. Messrs. Peter G. Peterson and Stephen A. Schwarzman are the founding members of BMA III (the "Founding Members") and have the shared power to vote or to direct the vote of, and to dispose or to direct the disposition of, the shares of the identified class of securities that may be deemed to be beneficially owned by BMA III. As a result, the Founding Members may be deemed to beneficially own the shares of the identified class of securities that BMA III may be deemed to beneficially own, but they disclaim any such beneficial ownership except to the extent of their individual pecuniary interest in such securities. Page 8 of 15 (b) Percent of class: See Item 11 of each cover page, which is based on Item 5 of each cover page. See Item 4(a). (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: See Item 5 of each cover page. (ii) Shared power to vote or to direct the vote: See Item 6 of each cover page. (iii) Sole power to dispose or to direct the disposition of: See Item 7 of each cover page. (iv) Shared power to dispose or to direct the disposition of: See Item 8 of each cover page. _____________________________________________________________________ Item 5. Ownership of Five Percent or Less of a Class. Not applicable. _____________________________________________________________________ Item 6. Ownership of More Than Five Percent on Behalf of Another Person. See Item 4(a) above. _____________________________________________________________________ Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company. Not applicable. _____________________________________________________________________ Item 8. Identification and Classification of Members of the Group. BMA III is the sole general partner of BCP III and BFIP III and the sole investment general partner of BOCP III and therefore may be deemed to be the beneficial owner of the securities held by such limited partnerships. However, BMA III disclaims that it is a beneficial owner of such securities, except to the extent of its pecuniary interest in such securities. BCP III, BFIP III and BOCP III may be deemed to be a group in relation to their respective investments in Premcor Inc. The Founding Members may be deemed to be a group in relation to their shared power to vote or to direct the vote of, and to dispose or to direct the disposition of, the securities held, through BMA III, by BCP III, BFIP III and BOCP III. _____________________________________________________________________ Page 9 of 15 Item 9. Notice of Dissolution of Group. Not applicable. ____________________________________________________________________ Item 10. Certifications. Not applicable. Page 10 of 15 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. BLACKSTONE CAPITAL PARTNERS III MERCHANT BANKING FUND L.P. By: Blackstone Management Associates III L.L.C., general partner By: /s/ Robert L. Friedman --------------------------------- Name: Robert L. Friedman Title: Member Dated: February 13, 2003 Page 11 of 15 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. BLACKSTONE OFFSHORE CAPITAL PARTNERS III L.P. By: Blackstone Management Associates III L.L.C., general partner By: /s/ Robert L. Friedman --------------------------------- Name: Robert L. Friedman Title: Member Dated: February 13, 2003 Page 12 of 15 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. BLACKSTONE MANAGEMENT ASSOCIATES III L.L.C. By: /s/ Robert L. Friedman --------------------------------- Name: Robert L. Friedman Title: Member Dated: February 13, 2003 Page 13 of 15 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. /s/ Peter G. Peterson -------------------------------- PETER G. PETERSON Dated: February 13, 2003 Page 14 of 15 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. /s/ Stephen A. Schwarzman -------------------------------- STEPHEN A. SCHWARZMAN Dated: February 13, 2003 Page 15 of 15