UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) Under the Securities Exchange Act of 1934 (Amendment No. 3) Lyondell Chemical Company -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 552078 -------------------------------------------------------------------------------- (CUSIP Number) Donald P. de Brier, Esq. Occidental Petroleum Corporation 10889 Wilshire Boulevard Los Angeles, California 90024 (310) 208-8800 -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) December 31, 2004 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box: [ ] CUSIP No. 552078 1. NAME OF REPORTING PERSONS: Occidental Petroleum Corporation S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only): 95-4035997 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF GROUP (a) [ ] (b) [ ] 3. SEC USE ONLY 4. SOURCE OF FUNDS OO 5. (CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)) [ ] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 46,307,860 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 46,307,860 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 46,307,860 12. CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 19.0% 14. TYPE OF REPORTING PERSON CO CUSIP No. 552078 1. NAME OF REPORTING PERSONS: Occidental Petroleum Investment Co. S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only): 95-2584267 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF GROUP (a) [ ] (b) [ ] 3. SEC USE ONLY 4. SOURCE OF FUNDS OO 5. (CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)) [ ] 6. CITIZENSHIP OR PLACE OF ORGANIZATION California NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 46,307,860 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 46,307,860 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 46,307,860 12. CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 19.0% 14. TYPE OF REPORTING PERSON CO 3 CUSIP No. 552078 1. NAME OF REPORTING PERSONS: Occidental Chemical Holding Corporation S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only): 95-2865897 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF GROUP (a) [ ] (b) [ ] 3. SEC USE ONLY 4. SOURCE OF FUNDS OO 5. (CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)) [ ] 6. CITIZENSHIP OR PLACE OF ORGANIZATION California NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 46,307,860 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 46,307,860 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 46,307,860 12. CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 19.0% 14. TYPE OF REPORTING PERSON CO 4 AMENDMENT NO. 3 TO SCHEDULE 13D This Amendment No. 3 (this "Amendment") amends the Schedule 13D previously filed by Occidental Petroleum Corporation, a Delaware corporation ("Occidental"), Occidental Petroleum Investment Co., a California corporation ("OPIC"), and Occidental Chemical Holding Corporation, a California corporation ("OCHC"). ITEM 1. SECURITY AND ISSUER The name of the issuer is Lyondell Chemical Company, a Delaware corporation ("Lyondell"). Lyondell's principal executive offices is located at 1221 McKinney Street, Suite 700, Houston, Texas 77010. This Statement relates to the common stock, par value $1.00 per share (the "Common Stock"), and Series B common stock, par value $1.00 per share ("Series B Common Stock"), of Lyondell. ITEM 2. IDENTITY AND BACKGROUND This Amendment is being filed jointly on behalf of each of the following persons (collectively, the "Reporting Persons"): (1) Occidental is a Delaware corporation. Occidental's principal businesses consist of two industry segments. The oil and gas segment explores for, develops, produces and markets crude oil and natural gas. The chemicals segment manufactures and markets basic chemicals, vinyls and performance chemicals. (2) OPIC is a California corporation. Its principal business is to act as a holding company for Occidental. (3) OCHC is a California corporation. Its principal business is to act as a holding company for Occidental. The business address of each Reporting Person is 10889 Wilshire Boulevard, Los Angeles, California 90024. The name, business address, and current principal occupation or employment of each of the executive officers and directors of the Reporting Persons are set forth below. Unless otherwise indicated, the business address of each such person is 10889 Wilshire Boulevard, Los Angeles, California 90024. All such persons listed below are citizens of the United States except Mr. Syriani, who is a citizen of Lebanon; Dr. Segovia, who is a citizen of Colombia; and Mr. Feick, who is a citizen of Canada. NAME AND BUSINESS ADDRESS PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT ------------------------- ------------------------------------------ Ray R. Irani(1) Chairman of the Board, Chief Executive Officer and President of Occidental B. Chuck Anderson Executive Vice President of OCHC 5005 LBJ Freeway Dallas, Texas 75244 5 NAME AND BUSINESS ADDRESS PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT ------------------------- ------------------------------------------ Dennis F. Blake Vice President of OCHC 5005 LBJ Freeway Dallas, Texas 75244 Ronald W. Burkle(1) Managing Partner and majority owner of The 9130 West Sunset Boulevard Yucaipa Companies Los Angeles, California 90069 John S. Chalsty(1) Chairman, Muirfield Capital Management, 10 Rockefeller Center, 8th Floor LLC New York, New York 10020 Stephen I. Chazen Senior Executive Vice President and Chief Financial Officer of Occidental Donald P. de Brier Executive Vice President, Secretary and General Counsel of Occidental Edward P. Djerejian(1) Director, James A. Baker III Institute for Rice University, MS-40 Public Policy 6100 Main Street Houston, Texas 77005-1892 S. P. Dominick, Jr.(2)(3) Vice President and Controller of Occidental, President of OPIC R. Chad Dreier(1) President and Chief Executive Officer, The 24025 Park Sorrento, Suite 400 Ryland Group Calabasas, California 91302 John E. Feick(1) President and Chief Executive Officer of 230, 319-2nd Avenue, Suite 400 Matrix Solutions, Inc. Calabasas, California 91302 Richard W. Hallock Executive Vice President - Human Resources of Occidental J. R. Havert(2)(3) Vice President and Treasurer of Occidental; Vice President and Treasurer of OPIC; Vice President and Treasurer of OCHC Donald G. Jackson Vice President of OCHC 110 West 7th Street Tulsa, Oklahoma 74102 Scott A. King(3) Vice President, General Counsel and 5005 LBJ Freeway Secretary of OCHC Dallas, Texas 75244 Anthony R. Leach Vice President - Finance of Occidental; Executive Vice President of OCHC James M. Lienert Vice President of Occidental; Executive 5005 LBJ Freeway Vice President of OCHC Dallas, Texas 75244 6 NAME AND BUSINESS ADDRESS PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT ------------------------- ------------------------------------------ Irvin W. Maloney(1) Retired Chairman and Chief Executive Officer, Dataproducts Corporation John W. Morgan Executive Vice President - Operations of Occidental; Vice President of OPIC Linda S. Peterson(2) Assistant Secretary of Occidental; Vice President and Secretary of OPIC; Vice President and Assistant Secretary of OCHC Rodolfo Segovia(1) Member of Executive Committee of Carrera 9A No. 99-02 OF. 1001 Inversiones Sanford Santafe de Bogota, D.C. Colombia Aziz D. Syriani(1) President and Chief Operating Officer of c/o The Olayan Group The Olayan Group 111 Poseidonos Avenue P.O. Box 70228 - Glyfada Athens 166 10, Greece Rosemary Tomich(1) Owner of the Hope Cattle Company and the A.S. Tomich Construction Company; Chairman of the Board of Directors and Chief Executive Officer, Livestock Clearing, Inc. Walter L. Weisman(1) Past Chairman and Chief Financial Officer P.O. Box 18017 of American Medical International, Inc. Beverly Hills, California 90209 -------------------- (1) Director of Occidental (2) Director of OPIC (3) Director of OCHC During the past five years, no Reporting Person nor, to the best knowledge of the Reporting Persons, any of the officers and directors named above has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction which resulted in him or it being subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION On December 30, 2003, OCHC received 512,449 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on March 29, 2004, OCHC received 523,920 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on June 29, 2004, OCHC received 532,114 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on September 29, 2004, OCHC received 422,909 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on December 30, 2004, OCHC received 305,496 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; and on December 31, 2004, OCHC 7 received 38,607,860 shares of Common Stock upon conversion of all of its shares of Series B Common Stock. ITEM 4. PURPOSE OF TRANSACTION On October 2, 2003, the Board of Directors of Lyondell declared a dividend in kind on the then outstanding shares of Series B Common Stock, which was paid on December 30, 2003 to OCHC as the sole holder of the Series B Common Stock. On February 5, 2004, the Board of Directors of Lyondell declared a dividend in kind on the then outstanding shares of Series B Common Stock, which was paid on March 29, 2004 to OCHC as the sole holder of the Series B Common Stock. On May 6, 2004, the Board of Directors of Lyondell declared a dividend in kind on the then outstanding shares of Series B Common Stock, which was paid on June 29, 2004 to OCHC as the sole holder of the Series B Common Stock. On July 8, 2004, the Board of Directors of Lyondell declared a dividend in kind on the then outstanding shares of Series B Common Stock, which was paid on September 29, 2004 to OCHC as the sole holder of the Series B Common Stock. On October 7, 2004, the Board of Directors of Lyondell declared a dividend in kind on the then outstanding shares of Series B Common Stock, which was paid on December 30, 2004. On December 9, 2004, pursuant to the Stockholders Agreement among Lyondell and the Reporting Persons, the Board of Directors of Lyondell elected to convert all of the shares of Series B Common Stock then outstanding into an equal number of shares of Common Stock, which occurred on December 31, 2004. Through OCHC, Occidental currently holds its securities in Lyondell for investment purposes only with a view toward maximizing long-term shareholder value for Occidental's stockholders and not for the purpose of controlling Lyondell. Other than as set forth above or in Item 6 of this Schedule 13D, Occidental currently has no plans that relate to, or would result in, any of the actions listed in clauses (a) through (j) of Item 4 of Schedule 13D. However, Occidental continuously reviews and analyzes its investments and other operations, including its investments in Lyondell, in order to determine whether value for Occidental's stockholders is best served by holding those investments, increasing, disposing of, or monetizing those investments, or recapitalizing or otherwise restructuring those investments. With respect to the Lyondell investment, these reviews and analyses depend on a variety of factors, including without limitation, the price of, and other market conditions relating to, the Lyondell securities, the investment return on the Lyondell securities, Lyondell's business and prospects, other investment and business opportunities available to Occidental, general stock market and economic conditions, tax considerations, and other factors deemed relevant. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER (a)-(b) OCHC directly owns 41,307,860 shares of Common Stock, representing approximately 17.0% of the issued and outstanding shares of Common Stock, and a warrant to purchase 5,000,000 shares of Common Stock, as described in Item 6 below. 8 As the sole stockholder of OCHC, OPIC may be deemed to be the beneficial owner of, and for purposes of Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), to have the shared power to vote or direct the vote of, and shared power to dispose or direct the disposition of, the 46,307,860 shares of Common Stock (including 5,000,000 shares of Common Stock issuable upon exercise of a warrant) held by OCHC. As the sole stockholder of OPIC, Occidental may be deemed to be the beneficial owner of, and for purposes of Rule 13d-3 under the Exchange Act to have the shared power to vote or direct the vote of, and shared power to dispose or direct the disposition of, the 46,307,860 shares of Common Stock (including 5,000,000 shares of Common Stock issuable upon exercise of a warrant) held by OCHC. None of the directors or executive officers listed in Item 2 above is the beneficial owner of Common Stock, except Dr. Ray R. Irani and Stephen I. Chazen, each of whom holds 4,051 shares of restricted Common Stock, 4,051 shares of phantom stock (to be settled for cash upon vesting of the restricted Common Stock), and 1,044 deferred stock units (to be settled for cash upon retirement). Each of Dr. Irani's and Mr. Chazen's holdings constitute less than one percent of the outstanding Common Stock. (c) On December 30, 2003, OCHC received 512,449 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on March 29, 2004, OCHC received 523,920 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on June 29, 2004, OCHC received 532,114 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on September 29, 2004, OCHC received 422,909 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; on December 30, 2004, OCHC received 305,496 shares of Series B Common Stock as a dividend in kind on the Series B Common Stock then held by OCHC; and on December 31, 2004, OCHC received 38,607,860 shares of Common Stock upon conversion of all of its shares of Series B Common Stock. As of the date hereof, the Reporting Persons beneficially own an aggregate of 46,307,860 shares of Common Stock (including 5,000,000 shares of Common Stock issuable upon exercise of a warrant), representing approximately 19.0% of the issued and outstanding shares of Common Stock. (d) Not applicable. (e) Not applicable. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER Stockholders Agreement In connection OCHC's initial acquisition of Series B Common Stock from Lyondell, Occidental, OCHC and Lyondell entered into a stockholders agreement on August 22, 2002 (the "Stockholders Agreement"). The Stockholders Agreement includes: (1) a "standstill" provision, which prohibits, among other things, Occidental (and requires Occidental to cause its wholly owned subsidiaries) from acquiring securities of Lyondell, making any proposal with respect to a merger, sale or other corporate transaction that would result in a change of control of Lyondell, or, except for the board representatives appointed by Occidental, seeking the removal of any member of the Board of Directors of Lyondell; (2) a provision requiring Occidental to cause each share of Common Stock beneficially owned by it to be (x) present for the taking of any Lyondell shareholder action and (y) voted for the board nominees that are proposed by the directors sitting on Lyondell's Board of Directors at the time of nomination; and (3) a provision 9 entitling Occidental to appoint two representatives to the Board of Directors of Lyondell so long as Occidental and its subsidiaries beneficially own in the aggregate, directly or indirectly, at least 17 million shares of Common Stock, including shares of Series B Common Stock (excluding, for purposes of such calculation, the shares issuable upon exercise of the Warrant), at which time, until the termination date of the Stockholders Agreement, Occidental shall be entitled to appoint one representative to the Board of Directors of Lyondell. Further, the Stockholders Agreement restricts the transferability of the shares of Common Stock beneficially owned by Occidental, subject to certain specified exceptions. The Stockholders Agreement terminates on the date on which Occidental and its subsidiaries beneficially own in the aggregate, directly or indirectly, less than 17 million shares of Common Stock, including shares of Series B Common Stock (excluding, for purposes of such calculation, the shares issuable upon exercise of the Warrant). On October 7, 2003, in connection with OCHC's purchase of 2,700,00 shares of Common Stock in an underwritten offering by Lyondell, Occidental, OCHC and Lyondell entered into an amendment to the Stockholders Agreement, amending the provision described in clause (3) above, such that Occidental is entitled to appoint two representatives to the Board of Directors of Lyondell so long as Occidental and its subsidiaries beneficially own in the aggregate, directly or indirectly, at least 34 million shares of Common Stock, including shares of Series B Common Stock (excluding, for purposes of such calculation, the shares issuable upon exercise of the Warrant). Warrant Concurrently with OCHC's initial acquisition of Series B Common Stock in August 2002, Lyondell issued a warrant (the "Warrant") to OCHC to purchase 5,000,000 shares of Common Stock (each, a "Warrant Share" and, collectively, the "Warrant Shares"), subject to adjustment. The Warrant is exercisable at a price of $25 per Warrant Share, at any time on or before the expiration date of the Warrant on August 22, 2007. Upon exercise, however, Lyondell has the right, in its sole discretion, to make a "net payment" by electing to pay the excess, if any, between the stock price per share of the Common Stock on the date of exercise and the $25 exercise price. The net payment may be made in the form of (1) cash, (2) shares of Common Stock, or (3) at Lyondell's option, a combination of (1) and (2). If Lyondell elects to make all or a portion of a net payment in the form of shares of Common Stock, each share will be valued by the average of the high and low per share sales prices of Common Stock, as reported on the New York Stock Exchange, on the exercise date. The Warrant provides that the number of Warrant Shares and the exercise price will be adjusted from time to time for any stock splits, dividends and combinations that occur during the five-year exercise period. Registration Rights Agreement On August 22, 2002, Lyondell entered into a registration rights agreement with OCHC (the "Registration Rights Agreement"), which provides OCHC and its permitted transferees the right to (1) require Lyondell to register the resale of the Warrant Shares and the shares of Common Stock acquired upon conversion of, as a dividend or other distribution with respect to, or in exchange for or in replacement of, OCHC's shares of Series B Common Stock (collectively, the "Registrable Shares") or (2) subject to certain specified exceptions, include the Registrable Shares in any registration statement to be filed by Lyondell in connection with an underwritten public offering. Lyondell is not required to effect more than three demand registrations in any 12-month period, only one of which may be an underwriting offering. Further, the Registration Rights Agreement provides that Lyondell shall pay all expenses relating to any demand or piggyback registration, excluding underwriting discounts and commissions with respect to any Registrable Shares and fees and expenses of counsel for OCHC or its permitted transferees. The registration rights of OCHC or any of its permitted transferees shall terminate when such 10 person no longer holds any Registrable Shares or any derivative securities convertible into or exercisable for Registrable Shares. The Registration Rights Agreement also includes customary suspension, underwriter "cut-back" and indemnification provisions. The foregoing summary is qualified in its entirety by reference to the Stockholders Agreement, the First Amendment to Stockholders Agreement, the Warrant and the Registration Rights Agreement, copies of which are filed as exhibits to this Statement. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS Exhibit 1 Agreement Pursuant to Rule 13d-1(k) Exhibit 2 Warrant for the Purchase of Shares of Common Stock, issued August 22, 2002* Exhibit 3 Stockholders Agreement, dated as of August 22, 2002, by and among Lyondell Chemical Company and the stockholders named therein* Exhibit 4 First Amendment to Stockholders Agreement, dated as of October 7, 2003, by and among Lyondell Chemical Company, Occidental Petroleum Corporation and Occidental Chemical Holding Company* Exhibit 5 Registration Rights Agreement, dated as of August 22, 2002, by and between Lyondell Chemical Company and Occidental Chemical Holding Corporation ------------------ *Previously filed. 11 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. Dated: January 7, 2005 OCCIDENTAL PETROLEUM CORPORATION By: /s/ JAMES R. HAVERT ---------------------------- Name: James R. Havert Title: Vice President and Treasurer OCCIDENTAL PETROLEUM INVESTMENT CO. By: /s/ JAMES R. HAVERT ---------------------------- Name: James R. Havert Title: Vice President and Treasurer OCCIDENTAL CHEMICAL HOLDING CORPORATION By: /s/ JAMES R. HAVERT ---------------------------- Name: James R. Havert Title: Vice President and Treasurer