EXHIBIT 4.4(a) LYONDELL PETROCHEMICAL COMPANY AND TEXAS COMMERCE BANK NATIONAL ASSOCIATION, Trustee FIRST SUPPLEMENTAL INDENTURE Dated as of May 31, 1989 to the INDENTURE Dated as of May 31, 1989 -------------------- 9.95% Notes Due 1996 10.00% Notes Due 1999 TABLE OF CONTENTS Page ---- Recitals of the Company............................. 1 Section 1. Terms Defined in the Indenture...................... 1 Section 2. Certain Defined Terms............................... 1 Section 3. Designation......................................... 5 Section 4. Dating of the Notes................................. 5 Section 5. Maximum Aggregate Outstanding Amount................ 5 Section 6. Stated Maturity..................................... 6 Section 7. Denomination of Notes............................... 6 Section 8. Payments of Principal and Interest, Record Dates.... 6 Section 9. Place of Payment.................................... 7 Section 10. Form of Notes....................................... 7 Section 11. Ranking............................................. 7 Section 12. Defeasance.......................................... 7 Section 13. Limitation on Liens................................. 8 Section 14. Put Right of Note Holders........................... 8 Section 15. Definition of Restricted Property and Subsidiary; Limitation on Olefins Subsidiary.................... 9 Section 16. Concerning the Trustee.............................. 10 Section 17. Events of Default................................... 11 Section 18. Governing Law....................................... 11 Section 19. Counterparts........................................ 11 Section 20. Miscellaneous....................................... 11 FIRST SUPPLEMENTAL INDENTURE, dated as of May 31, 1989 (the "Supplement"), between LYONDELL PETROCHEMICAL COMPANY, a Delaware corporation (the "Company"), and Texas Commerce Bank National Association, a national banking association (the "Trustee"), as Trustee under an Indenture, dated as of May 31, 1989 (the "Indenture"). RECITALS OF THE COMPANY The Company has previously executed and delivered to the Trustee the Indenture. Section 2.01 and 11.01 of the Indenture provide, among other things, that the Company, when authorized by its Board of Directors, and the Trustee may at any time and from time to time enter into an indenture supplemental to the Indenture for the purpose of authorizing a series of Securities and specifying the terms and form of each series of Securities. The Board of Directors of the Company has duly authorized the creation, issuance, execution and delivery of two series of notes consisting of the 9.95% Notes Due 1996 (the "1996 Notes") and the 10.00% Notes Due 1999 (the "1999 Notes") in the maximum aggregate principal amount of $300,000,000. The Company and the Trustee are executing and delivering this Supplement in order to provide for the 1996 Notes and the 1999 Notes (collectively the "Notes"). All things necessary to make this Supplement a valid and legally binding agreement of the Company have been done. SECTION 1. Terms Defined in the Indenture. All capitalized terms used in this Supplement that are defined in the Indenture have the meanings assigned to them in the Indenture, except to the extent that such terms are otherwise defined in this Supplement. SECTION 2. Certain Defined Terms. (A) Definitions. "Applicable Percentage" means (1) in the case of each distribution referred to in clause (5) of the definition of Designated Event, the percentage determined, as of the Calculation Date corresponding with each such distribution, by dividing the aggregate fair market value of such distribution (as determined in good faith by the Board of Directors, whose determination shall be conclusive), by the fair market value (based on the Current Market Price) of all shares of all classes of the Company's capital stock outstanding on the day immediately prior to each such Calculation Date, and (2) in the case of each purchase or acquisition referred to in clause (5) of the definition of Designated Event, the percentage determined, as of the Calculation Date corresponding with each purchase or acquisition, by dividing all amounts expended by the Company and its Subsidiaries or majority owned affiliates (the amount expended, if other than cash, shall be determined in good faith by the 1 Board of Directors, whose determination shall be conclusive) in connection with the purchase or acquisition of any shares of any class of Voting Stock of the Company, by the fair market value (based on the Current Market Price) of all shares of all classes of the Company's capital stock outstanding on the day immediately prior to each such Calculation Date. "Capital Expenditures" shall mean all expenditures for the maintenance, repair or upgrade of the Restricted Properties existing as of the date of this Supplement which expenditures are capitalized under generally accepted accounting principles. "Current Market Price" means the closing price (or, if none, the average of the last daily bid and asked prices) of the applicable class of capital stock as quoted by the primary securities exchange on which the stock is traded, or, if none, the primary inter-dealer quotation system, which reports quotations for the class of capital stock, for the last trading day immediately prior to the Calculation Date. "Designated Event" means any one or more of the following events which occurs subsequent to the date of issuance of the Notes: (1) a "person" or "group" (within the meaning of Sections 13(d) and 14(d)(2) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")) (with the exception of the Company, Atlantic Richfield Company, or any of their respective majority owned subsidiaries or affiliates) becomes the "beneficial owner" (as defined in Rule 13d-3 of the Exchange Act) of more than 20% of the then outstanding Voting Stock of the Company; provided that such 20% shall be 30% with respect to any "employee benefit plan" (as defined in Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended) maintained by the Company or any Subsidiary, or any trust or funding vehicle maintained thereunder; (2) during any period of two consecutive years, individuals who at the beginning of such period constitute the Company's Board of Directors (together with any new Director whose election by the Company's Board of Directors or whose nomination for election by the Company's stockholders was approved by a vote of at least two-thirds of the Directors then still in office who either were Directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the Directors then in office; (3) (i) the Company shall consolidate with or merge into any other corporation or convey, transfer or lease all or substantially all of its assets to any person or (ii) any corporation shall consolidate with or merge into the Company, in either event pursuant to a transaction in which any shares of Voting Stock of the Company outstanding immediately prior to the effectiveness thereof are changed into or exchanged for cash, securities or other property; provided that any merger, 2 consolidation, conveyance, transfer or lease between the Company and its Subsidiaries or between Subsidiaries shall be excluded from the operation of this clause (3); (4) the Company or any Subsidiary or majority owned affiliate shall purchase or otherwise acquire, directly or indirectly, beneficial ownership of Voting Stock of the Company if, after giving effect to such purchase or acquisition, the Company (together with all Subsidiaries or majority owned affiliates) shall have acquired, during any period of 12 consecutive months, beneficial ownership of an aggregate of 30% or more of the Voting Stock of the Company outstanding on the date immediately prior to the first such purchase or acquisition during such period; (5) on any date (a "Calculation Date") (i) the Company shall make any distribution or distributions of cash, securities or other properties (other than (a) regular cash dividends, or (b) capital stock or rights to acquire capital stock substantially equivalent to capital stock of the Company) to holders of Voting Stock, whether by means of dividend, reclassification, recapitalization or otherwise, or (ii) the Company or any Subsidiary shall purchase or otherwise acquire, directly or indirectly, beneficial ownership of Voting Stock of the Company, and the sum of the Applicable Percentages corresponding with all such distributions, purchases and acquisitions covered by this clause (5), which are being made currently or have occurred during the 12 consecutive months immediately preceding the Calculation Date shall be at least 30%. The $500 million special distribution paid on January 17, 1989 to the Company's sole stockholder at that time, Atlantic Richfield Company, shall not be deemed to be a distribution subject to this clause (5); or (6) during any fiscal year (i) the Company or any Subsidiary shall make any distribution or distributions of cash, securities or other properties (other than (a) regular cash dividends, and (b) capital stock or rights to acquire capital stock substantially equivalent to capital stock of the Company) to holders of Voting Stock, whether by means of dividend, reclassification, recapitalization or otherwise, or (ii) the Company or any Subsidiary shall purchase or otherwise acquire, directly or indirectly, beneficial ownership of Voting Stock of the Company (other than Voting Stock purchased or acquired in connection with employee benefit plans or in connection with other employee compensation programs, having an aggregate purchase price or acquisition cost not greater than $25 million), and the sum of the fair market value (as determined in good faith by the Board of Directors, whose determination shall be conclusive) of all such distributions, acquisitions or purchases during such fiscal year shall exceed an amount equal to the Company's Net Cash Flow for the prior fiscal year less the aggregate amount of regular quarterly dividends paid during the same prior fiscal year. The $500 million special distribution paid on January 17, 1989 to the Company's sole stockholder at that time, Atlantic Richfield Company, shall not be deemed to be a distribution subject to this clause (6). 3 For purposes of clauses (5) and (6), regular dividends shall be deemed to be those quarterly cash dividends, including increases in such dividends, paid from time to time by the Company; provided, however, that, in the good faith judgment of the Company's Board of Directors, whose determination shall be conclusive, (i) the amount of the dividends is appropriate in light of the Company's results of operations, and (ii) the Company is capable of sustaining the rate at which the dividends are being paid. "Full Rating Category" means (1) with respect to S&P, any of the following categories in descending order: AAA, AA, A, BBB, BB, B, CCC, CC and C, (2) with respect to Moody's, any of the following categories in descending order: Aaa, Aa, A, Baa, Ba, B, Caa, Ca and C and (3) with respect to any other rating agency, the equivalent of any category of S&P or Moody's used by the other rating agency. In determining whether the rating of the Notes has decreased by the equivalent of one Full Rating Category, gradation within Full Rating Categories (+ and - for S&P; 1, 2, and 3 for Moody's; or the equivalent gradation for another rating agency) shall be taken into account (e.g., with respect to S&P, a decline in rating from BB- to B- will constitute a decrease of one Full Rating Category, and a decline in rating from BB- to B will constitute a decrease of less than one Full Rating Category). "Investment Grade" means a rating of not less than Baa3, in the case of a rating by Moody's, or a rating of not less than BBB-, in the case of a rating by S&P, or the equivalent of such ratings by S&P or Moody's or by any other rating agency. "Net Cash Flow" shall mean net income plus the following: (1) depreciation; (2) amortization of goodwill and other intangible assets; (3) the deferred portion of the Company's income tax provision; (4) the proceeds from the sale of capital stock; and (5) the net change in accounts receivable, inventories, accounts payable and other working capital accounts as shown on the Company's Consolidated Statement of Cash Flows; reduced by the following: (1) the amount of any after-tax gains on asset sales included in net income; (2) principal repayments of Debt and payments of the principal portion of capital leases (to the extent such repayments and payments have not been refinanced through the issuance of new Debt or capital leases at any time after the beginning of the fiscal year for which the calculation is made and ending on the date of any distribution, acquisition or purchase referred to in clause (6) of the definition of Designated Event); and (3) Capital Expenditures. "Public Notice" shall, without limitation, include any filing or report made in accordance with the requirements of the Securities and Exchange Commission or any press release or public announcement made by the Company. "Rating Agency" shall mean Standard & Poor's Corporation and its successors ("S&P"), and Moody's Investors Service, Inc. and its successors ("Moody's"), or, if S&P or Moody's or both shall not make a rating on the Notes publicly available, a nationally recognized securities rating agency or agencies, as the case may be, selected by the 4 Company which shall be substituted for S&P or Moody's or both, as the case may be. "Rating Date" shall mean the date that is 121 days prior to Public Notice of the occurrence of a Designated Event. "Rating Decline" shall be deemed to occur if on any date within the 90-day period following Public Notice of the occurrence of a Designated Event (which period shall be extended so long as the rating of the Notes is under publicly announced consideration for possible downgrade by a Rating Agency) (1) in the event the Notes are rated by one or both Rating Agencies on the Rating Date as Investment Grade, the rating on the Notes by both Rating Agencies shall be below Investment Grade, or (2) in the event the Notes are rated by both Rating Agencies on the Rating Date below Investment Grade, the rating on the Notes by each Rating Agency shall be at least one Full Rating Category below the rating of the Notes by such Rating Agency on the Rating Date. "Voting Stock" means the capital stock of the Company normally entitled to vote in the election of directors. (B) Other Definitions. Defined in Term Section ---- ------- Indenture Recital of the Company Moody's Definition of Full Rating Category 1996 Notes Preliminary Statement 1999 Notes Preliminary Statement S&P Definition of Full Rating Category Record Date 8 Repurchase Date 14 SECTION 3. Designation. The Notes are hereby created and shall be issuable in two series, the 1996 Notes shall be designated as the "9.95% Notes Due 1996" and the 1999 Notes shall be designated as the "10.00% Notes Due 1999." SECTION 4. Dating of the Notes. All Notes shall be dated the date of authentication. SECTION 5. Maximum Aggregate Outstanding Amount. The maximum aggregate principal amount of the 1996 Notes and 1999 Notes that may be authenticated and delivered under this Supplement is limited to $150,000,000 and 5 $150,000,000, respectively, except for Notes authenticated and delivered upon transfer of, or in exchange for, or in lieu of, other Notes pursuant to Sections 2.05, 2.06, 2.07, 3.03 or 11.04 of the Indenture. SECTION 6. Stated Maturity. The principal amount of the 1996 Notes shall be due and payable on June 1, 1996. The principal amount of the 1999 Notes shall be due and payable on June 1, 1999. SECTION 7. Denomination of Notes. The Notes shall be issued only in fully registered certificated form, without coupon, in minimum denominations of $1,000 and any amount in excess thereof that is an integral multiple of S1,000. SECTION 8. Payments of Principal and Interest, Record Dates. Each Note shall bear interest on its outstanding principal balance from June 1, 1989 at the following interest rates, until payment of the principal thereof has been made or duly provided for: the 1996 Notes, 9.95%; and the 1999 Notes, 10.00%. Interest on the Notes shall be paid semi-annually on June 1 and December 1, commencing on December 1, 1989. Interest on the Notes of each series shall be computed on the basis of a 360-day year of twelve 30-day months, from the later of: (1) June 1, 1989, or (2) the most recent Interest Payment Date to which interest has been paid or duly provided for. Interest on the Notes shall be payable in lawful money of the United States of America. The principal of each Note shall be payable on the date due upon delivery and surrender of such Note to the Trustee at the Place of Payment in lawful money of the United States of America in next-day funds by check as provided in Section 5.02 of the Indenture. The record date ("Record Date") for each Interest Payment Date shall be the close of business on the May 15 and November 15 next preceding each Interest Payment Date, whether or not such date shall be a Business Day. Any interest not paid on the Interest Payment Date therefor ("Defaulted Interest") may be paid to the person in whose name this Note is registered at the close of business on a special record date for the payment of such Defaulted Interest, notice of which shall be given by the Company to Holders of Notes not less than fifteen days prior to such special record date, or may be paid in any other lawful manner. Payment of interest on each Note shall be made on each Interest Payment Date to the Holder of each Note at the close of business on the Record Date for each Interest Payment Date by check mailed to the Holder at its address as it appears on the registration 6 books maintained by the Company pursuant to Section 2.05 of the Indenture or at any other address that is furnished to the Trustee in writing by the Holder at least 15 Business Days prior to the Interest Payment Date. Any payment of principal or interest required to be made on an Interest Payment Date or at Maturity of a Note that is not a Business Day need not be made on that day, but may be made on the next succeeding Business Day with the same force and effect as if made on the Interest Payment Date or at Maturity, as the case may be, and no additional interest shall accrue as a result of such delayed payment. The Company shall pay any administrative costs imposed by banks in connection with making payments by wire transfer in accordance with the requirements of this Section 8, but any tax, assessment or governmental charge imposed upon or required to be withheld from payments shall be borne by the Holders of the Notes in respect to which payments are made. SECTION 9. Place of Payment. The Place of Payment of the Notes shall be at the offices or agencies of the Trustee in Houston, Texas, or, at the option of the Holder, in the Borough of Manhattan, the City of New York, New York, which shall be maintained for such purpose in accordance with Section 5.02 of the Indenture. SECTION 10. Form of Notes. The front of the 1996 Notes, the front of the 1999 Notes, and the back of the Notes are attached hereto as Exhibits A-I, A-II and A-III, respectively. Each of the 1996 Notes shall be numbered consecutively from A-1000 upward. Each of the 1999 Notes shall be numbered consecutively from B-1000 upward. The Notes shall bear CUSIP numbers, but any failure to indicate or any error in such CUSIP numbers shall not in any way affect the validity of the Notes. SECTION 11. Ranking. The Notes shall constitute unsecured and unsubordinated indebtedness of the Company and shall rank pari passu with any other unsecured and unsubordinated indebtedness of the Company. SECTION 12. Defeasance. The Notes shall be subject to defeasance as provided in Article Fourteen of the Indenture. Upon any defeasance of the 1996 Notes or 1999 Notes, the Company shall cease to be under any obligation to comply with any term, provision or condition of Sections 13, 14, 15, 16 and 17 of this Supplement. 7 SECTION 13. Limitation on Liens. Clause (h) of Section 5.03 of the Indenture shall be amended to provide that the Company may not extend, renew or replace any Restricted Subsidiary's obligations under the two 20-year capital leases existing on the date hereof on the Company's two Channelview olefins plants (the "Olefins Plants"), which leases were entered into in 1976 and 1977, by issuing Debt after the date hereof that is secured by a Mortgage on the Olefins Plants which matures after the stated maturity of the existing capital lease obligations. Except for the limitation set forth in the preceding sentence, Section 5.03 shall remain unchanged. This amendment shall not affect any Security of any series created after the date of this Supplement. SECTION 14. Put Right of Note Holders. (A) In the event that there shall occur both (1) a Designated Event and (2) a Rating Decline, each registered Holder of Notes shall have the right, at the Holder's option, to require the Company to purchase, and upon the exercise of such right the Company shall purchase, all or any part of the Holder's Notes on the date (the "Repurchase Date") that is 100 days after the last to occur of (1) Public Notice of the Designated Event and (2) the Rating Decline, at a purchase price of 100% of the principal amount thereof, plus accrued interest to the Repurchase Date. (B) On or before the 28th day following the last to occur of (1) Public Notice of such Designated Event and (2) the Rating Decline, the Company shall notify the Trustee in writing of the Designated Event and Rating Decline and of the repurchase right set forth herein arising as a result thereof. Promptly following notification of the Trustee, the Company (or, at the request of the Company, the Trustee) shall give notice by registered or certified mail, to each Holder of Notes at the Holder's address appearing in the Note register. The Company shall also cause a copy of the notice of a repurchase right to be published in an Authorized Newspaper. The Company will not be obligated to purchase the Notes or to give notice to Holders of Notes with respect to more than one Designated Event and Rating Decline. Each notice of a repurchase right shall include the following: (1) the Repurchase Date; (2) the date by which the repurchase right must be exercised; (3) the price at which the repurchase is to be made, if the repurchase right is exercised; (4) a description of the procedure which a Holder of Notes must follow to exercise a repurchase right; and (5) a statement that the Company will not be obligated to purchase the Notes or to give notice to any Holder of any subsequent Designated Event and Rating Decline. 8 No failure of the Company to give the forgoing notice shall limit any Holder's right to exercise a repurchase right. (C) To exercise a repurchase right, a Holder of Notes shall deliver to the Company (or an agent designated by the Company for such purchase in the notice referred to in (B) above) at least ten days prior to the Repurchase Date (1) written notice of the Holder's exercise of such right, which notice shall set forth the name of the Holder, the principal amount of the Note or Notes (or portion thereof) to be repurchased, and a statement that the option to exercise the repurchase right is being made thereby and (2) the Note with respect to which the repurchase right is being exercised, duly endorsed for transfer to the Company. Such written notice shall be irrevocable and interest on the Note or Notes (or portion thereof) presented and surrendered for purchase shall cease to accrue from and after the Repurchase Date. The right of the Holder to sell any Notes (or portion of a Note) to the Company will terminate as of the close of business on the 10th day preceding the Repurchase Date, and the Company will not be obligated to purchase any Note presented or surrendered from and after such termination date. (D) In the event a repurchase right shall be exercised in accordance with the terms of this Section 14, on the Repurchase Date the Company shall pay or cause to be paid the price payable with respect to the Note or Notes (or portion thereof), as to which the repurchase right has been exercised, in cash or immediately available funds to the Holder of such Note or Notes. In the event that a repurchase right is exercised with respect to less than the entire principal amount of a surrendered Note, the Company shall execute and deliver to the Trustee, and the Trustee shall authenticate for issuance in the name of the Holder, a new Note or Notes in the aggregate principal amount of that portion of such surrendered Note not repurchased. SECTION 15. Definition of Restricted Property and Subsidiary; Limitation on Olefins Subsidiary Debt. The definition of Restricted Property in the Indenture shall be amended to include any plant for the refining of petroleum or the production of petrochemicals that as of the date hereof is leased by the Company or its Subsidiary. The definition of Restricted Subsidiary in the Indenture shall be amended to include any Subsidiary that as of the date hereof leases Restricted Property. Except for the inclusion of such leased property, the definitions shall remain unchanged. During any period that title to the Olefins Plants is owned by one or more Subsidiaries (for purposes of this Section 15 hereinafter referred to collectively as the "Olefins Subsidiary"), the Company shall not permit any Olefins Subsidiary to issue, guarantee, assume, incur or have outstanding directly or indirectly, any Debt (as defined in Section 5.03 of the Indenture), except that this limitation shall not apply to Debt secured by Mortgages permissible under clauses (a) through (h) of Section 5.03 of the Indenture. Notwithstanding the foregoing, the Olefins Subsidiary may issue, assume, guarantee or 9 have outstanding Debt which would otherwise be subject to the foregoing restriction in an aggregate principal amount which, together with the outstanding principal amount of (A) any Debt permitted under the last paragraph of Section 5.03 of the Indenture and (B) all other Debt of the Olefins Subsidiary subject to the foregoing restriction, does not at any one time exceed the greater of $50 million or 10% of the Consolidated Net Tangible Assets of the Company and its consolidated Subsidiaries. This provision shall not affect any Security of any series created after the date of this Supplement. SECTION 16. Concerning the Trustee. (A) Section 8.02 of the Indenture shall be amended to add the following clause as Clause (i): "(i) the Trustee shall not be required to take notice of or be deemed to have notice of any Event of Default under the Indenture, except for Events of Default specified in Subsection (a), (b) or (c) of Section 7.01 of the Indenture, unless the Trustee shall be specifically notified in writing of such Event of Default by the Company or any Holder of the Notes, and all notices in order to be effective must be delivered to the Principal Office of the Trustee, and in the absence of such notice so delivered, the Trustee may conclusively assume there is no Event of Default except as aforementioned." (B) Section 9.04 of the Indenture shall be amended to add at the end of Section 9.04 the following paragraph: "Upon request of the Trustee, the Company shall furnish the Trustee promptly an Officer's Certificate listing and identifying all Notes if any, known by the Company to be owned or held by or for the account of any of the above described persons; and subject to Sec. 8.01, the Trustee shall be authorized to accept such Officer's Certificate as conclusive evidence of the facts therein set forth and the fact that all Notes not listed therein are outstanding for the purpose of any such determination." (C) Except as amended above, Sections 8.02 and 9.04 shall remain unchanged. These amendments shall not affect any Security of any series created after the date of this Supplement. 10 SECTION 17. Events of Default. In addition to the Events of Default specified in Section 7.01 of the Indenture, an Event of Default with respect to the Notes shall include the following: (a) the failure on the part of the Company to observe or perform any covenant or agreement under Sections 13 and 15 hereof and the continuance of such default or breach for a period of 90 days after the date on which written notice specifying such default or breach and requiring it to be remedied and stating that such a notice is a "Notice of Default" shall have been given to the Company by the Trustee, or to the Company by the Holders of at least 25% in aggregate principal amount of the Notes at the time outstanding; or (b) default by the Company in the payment of the principal amount due for repurchase of the Notes pursuant to Section 14 hereof. SECTION 18. GOVERNING LAW. THIS SUPPLEMENT AND EACH NOTE ISSUED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN. SECTION 19. Counterparts. This Supplement may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, but both of which shall together constitute but one and the same instrument. SECTION 20. Miscellaneous. (a) Except as expressly amended and supplemented by this Supplement, the Indenture shall remain in full force and effect. (b) This Supplement shall be construed as supplemental to the Indenture and shall form a part thereof. 11 IN WITNESS, WHEREOF, the Company and the Trustee have caused this Supplement to be duly executed by their respective officers thereunto duly authorized as of the day and year first above written. LYONDELL PETROCHEMICAL COMPANY By: /s/ Russell S. Young -------------------------------------- Name: Russell S. Young Title: Vice President and Treasurer TEXAS COMMERCE BANK NATIONAL ASSOCIATION By: /s/ Roy H. Trice, Jr. --------------------------------------- Name: Roy H. Trice, Jr. Title: Vice President and Trust Officer 12 EXHIBIT A-1 No. A- $ LYONDELL PETROCHEMICAL COMPANY 9.95% NOTE DUE 1996 LYONDELL PETROCHEMICAL COMPANY, a corporation duty organized and existing under the laws of the State of Delaware (herein called the "Company), for value received, hereby promises to pay to ____________________ or registered assigns, the principal sum of __________________ Dollars on June 1, 1996, and to pay interest thereon from June 1, 1989 or from the most recent June 1 or December 1 to which interest has been paid or duly provided for, semiannually on June 1 and December 1 in each year (each an "Interest Payment Date"), commencing December 1, 1989, at the rate per annum specified in the title hereof, until the principal hereof is paid or duly provided for. The interest so payable on any Interest Payment Date will be paid, except as provided in the Indenture, to the person in whose name this Note is registered at the close of business on the Record Date for such interest, which shall be the May 15 or November 15 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any interest not paid on the Interest Payment Date therefor ("Defaulted Interest") may be paid to the person in whose name this Note is registered at the close of business on a special record date for the payment of such Defaulted Interest, notice of which shall be given by the Company to Holders of Notes not less than fifteen days prior to such special record date, or may be paid in any other lawful manner. For purposes of this Note, "Business Day" means any day, other than a Saturday or Sunday, that is not a day on which banking institutions are authorized or required by law or regulation to be closed in The City of New York or The City of Houston. Payment of the principal and interest on this Note will be payable (in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts) at the office or agency of the Trustee maintained for that purpose in the City of Houston, Texas, or, at the option of the Holder, in the Borough of Manhattan, The City of New York, New York; provided, however, that at the option of the Company payment of interest may be made by check mailed to the address of the person entitled thereto as such address shall appear in the register for the Notes. Interest will be computed on the basis of a 360-day year of twelve 30-day months. 1 Reference is made to the further provisions of this Note set forth on the reverse hereof. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been signed by the Trustee under the Indenture referred to on the reverse hereof. IN WITNESS WHEREOF, LYONDELL PETROCHEMICAL COMPANY has caused this instrument to be signed, manually or by facsimile, by its duly authorized officers and its corporate seal to be printed, engraved or otherwise reproduced hereon, by facsimile or otherwise. LYONDELL PETROCHEMICAL COMPANY By By ---------------------------- ------------------------------------- Vice President and Treasurer President and Chief Executive Officer Dated: TRUSTEE'S CERTIFICATE OF AUTHENTICATION THIS IS ONE OF THE SECURITIES ISSUED UNDER THE WITHIN-MENTIONED INDENTURE. Texas Commerce Bank National Association, as Trustee By................................. Authorized Officer 2 EXHIBIT A-II No. B- $ LYONDELL PETROCHEMICAL COMPANY 10.00% NOTE DUE 1999 LYONDELL PETROCHEMICAL COMPANY, a corporation duly organized and existing under the laws of the State of Delaware (herein called the "Company"), for value received, hereby promises to pay to _______________________ or registered assigns, the principal sum of ___________________ Dollars on June 1, 1999, and to pay interest thereon from June 1, 1989 or from the most recent June 1 or December 1 to which interest has been paid or duly provided for, semiannually on June 1 and December 1 in each year (each an "Interest Payment Date"), commencing December 1, 1989, at the rate per annum specified in the title hereof, until the principal hereof is paid or duly provided for. The interest so payable on any Interest Payment Date will be paid, except as provided in the Indenture, to the person in whose name this Note is registered at the close of business on the Record Date for such interest, which shall be the May 15 or November 15 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any interest not paid on the Interest Payment Date therefor ("Defaulted Interest") may be paid to the person in whose name this Note is registered at the close of business on a special record date for the payment of such Defaulted Interest, notice of which shall be given by the Company to Holders of Notes not less than fifteen days prior to such special record date, or may be paid in any other lawful manner. For purposes of this Note, "Business Day" means any day, other than a Saturday or Sunday, that is not a day on which banking institutions are authorized or required by law or regulation to be closed in The City of New York or The City of Houston. Payment of the principal and interest on this Note will be payable (in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts) at the office or agency of the Trustee maintained for that purpose in the City of Houston, Texas, or, at the option of the Holder, in the Borough of Manhattan, The City of New York, New York; provided, however, that at the option of the Company payment of interest may be made by check mailed to the address of the person entitled thereto as such address shall appear in the register for the Notes. Interest will be computed on the basis of a 360-day year of twelve 30-day months. 1 Reference is made to the further provisions of this Note set forth on the reverse hereof. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been signed by the Trustee under the Indenture referred to on the reverse hereof. IN WITNESS WHEREOF, LYONDELL PETROCHEMICAL COMPANY has caused this instrument to be signed, manually or by facsimile, by its duly authorized officers, and its corporate seal to be printed, engraved or otherwise reproduced hereon, by facsimile or otherwise. LYONDELL PETROCHEMICAL COMPANY By By -------------------------------- ------------------------------------- Vice President and Treasurer President and Chief Executive Officer Dated: TRUSTEE'S CERTIFICATE OF AUTHENTICATION THIS IS ONE OF THE SECURITIES ISSUED UNDER THE WITHIN-MENTION INDENTURE. Texas Commerce Bank National Association, as Trustee By............................ Authorized Officer 2 EXHIBIT A-III LYONDELL PETROCHEMICAL COMPANY ___% NOTE DUE [1996] [1999] This Note is one of a duly authorized issue of debentures, notes or other evidences of indebtedness of the Company (herein called the "Securities"), of the series hereinafter specified, all issued or to be issued under and pursuant to an Indenture dated as of May 31, 1989 (herein called the "Indenture"), duly executed and delivered by the Company to Texas Commerce Bank National Association, Trustee (hereinafter called the "Trustee"), to which Indenture, and all indentures supplemental thereto, if any, reference is hereby made for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the Holders of the Securities. In the event of any inconsistency between the provisions of this Note and the provisions of the Indenture, and any indentures supplemental thereto, the terms of the Indenture and any indentures supplemental thereto shall control. This Note is one of a series of Securities of the Company issued pursuant to the First Supplemental Indenture dated as of May 31, 1989 (herein called the "Supplement"), and the Indenture (as used herein the "Indenture" refers to the Indenture as supplemented by the Supplement) designated as the ___% Notes Due [1996][1999] (herein called the "Notes") limited in aggregate principal amount to $________________. In the event that there occurs (a) a Designated Event (as defined in the Supplement) with respect to the Company and (b) a Rating Decline (as defined in the Supplement), Holders of the Notes shall have the right, at the Holders' option, to require the Company to purchase all or any part of such Holders' Notes at 100% of the principal amount thereof, plus interest accrued through the Repurchase Date (as defined in the Supplement). The Company is obligated to provide notice to each Holder that a Designated Event and a Rating Decline has occurred and of the Repurchase Date. The Company is not obligated to provide notice or repurchase the Notes with respect to more than one Designated Event and Rating Decline. In case an Event of Default shall occur and be continuing, the principal hereof may be declared, and upon such declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture. The Indenture contains provisions permitting the Company and the Trustee, with the consent of the Holders of not less than 50% in aggregate principal amount at Stated Maturity of the Securities at the time outstanding of each series affected by such 1 supplemental indenture or indentures, evidenced as provided in the Indenture, to execute supplemental indentures adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture, or of any supplemental indenture or indentures, as such provisions apply to such Securities, or modifying in any manner the rights of the Holders of the Securities; provided, however, that no such supplemental indenture shall (i) extend the fixed maturity of any Security or reduce the rate, or extend the time of payment of interest thereon or reduce the principal thereof or the time during which interest is payable thereon or change the method of computing the amount of principal thereof or make the principal thereof or interest thereon payable in any coin or currency other than that provided in the Securities without the consent of the Holder thereof, or (ii) reduce the percentage in principal amount at Stated Maturity of the outstanding Securities, the consent of whose Holders is required for any such supplemental indenture, or the consent of whose Holders is required for any waiver of compliance with certain provisions of the Indenture or of certain defaults under, and their consequences provided for in, the Indenture, without the consent of the Holders of each Security of such series so affected. Any such consent or waiver by the Holder of this Note (unless revoked as provided in the Indenture) shall be conclusive and binding upon such Holder and upon all future Holders and owners of this Note and any Notes which may be issued in exchange or substitution herefor, irrespective of whether any notation thereof is made upon this Note or such other Notes. No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest on this Note at the place, at the respective times, at the rate, and in the coin or currency herein prescribed. The Notes are issuable in registered form without coupons in denominations of $1,000 and whole multiples of $1,000 in excess of that amount. Notes may be exchanged for a like aggregate principal amount of Notes of other authorized denominations, without charge except for any tax or other governmental charge imposed in relation thereto, at the office or agency of the Trustee, and in the manner and subject to the limitations provided in the Indenture. The Notes are unsecured obligations of the Company ranking pari passu without any preference among themselves and equally with all other unsecured indebtedness (other than subordinated indebtedness) of the Company from time to time outstanding. Upon due presentment for registration of transfer of this Note at the office or agency of the Trustee, a new Note or Notes of authorized denominations for an equal aggregate principal amount at Stated Maturity will be issued to the transferee in exchange therefor, in the manner and subject to the limitations provided in the Indenture, without charge except for any tax or other governmental charge imposed in relation thereto. Prior to due presentment for registration of transfer of this Note, the Company, the Trustee, any paying agent and any registrar for the Notes may deem and treat the 2 registered Holder hereof as the absolute owner of this Note (whether or not this Note shall be overdue and notwithstanding any notation of ownership or other writing hereon by anyone other than the Company, any registrar for the Notes or the Trustee), for the purpose of receiving payment hereof or on account hereof, and for all other purposes (subject to the provisions appearing on the face hereof), and neither the Company nor the Trustee nor any paying agent nor any registrar for the Notes shall be affected by any notice to the contrary. No recourse for the payment of principal or interest on this Note, or for any claim based hereon or otherwise in respect hereof, and no recourse under or upon any obligation, covenant or agreement of the Company in the Indenture, or any indenture supplemental thereto, or in any Note, or because of the creation of any indebtedness represented thereby, shall be had against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as a condition of and as part of the consideration for the issue hereof, expressly waived and released. Terms used herein which are defined in the Supplement or Indenture shall have the meanings assigned to them in the Supplement or Indenture. THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK. 3