UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): MAY 15, 2006 -------------------- CENTERPOINT ENERGY RESOURCES CORP. (Exact name of registrant as specified in its charter) DELAWARE 1-13265 76-0511406 (State or other jurisdiction (Commission File Number) (IRS Employer of incorporation) Identification No.) 1111 LOUISIANA HOUSTON, TEXAS 77002 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (713) 207-1111 -------------------- Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ITEM 1.01 ENTRY INTO A MATERIAL DEFINITION AGREEMENT. On May 15, 2006, CenterPoint Energy Resources Corp. ("CERC") entered into an Underwriting Agreement, dated as of May 15, 2006 (the "Underwriting Agreement"), among CERC and the several Underwriters named in Schedule I to the Underwriting Agreement, relating to the underwritten public offering of $325,000,000 aggregate principal amount of CERC's 6.15% Senior Notes due 2016 (the "Notes"). The offering is being made pursuant to CERC's registration statement on Form S-3 (Registration No. 333-128187). The Notes are being issued pursuant to the Indenture, dated as of February 1, 1998, between CERC (formerly NorAm Energy Corp.) and JPMorgan Chase Bank, National Association (successor to Chase Bank of Texas, National Association), as trustee (the "Trustee"), as amended by Supplemental Indenture No. 9, dated as of May 18, 2006, between CERC and the Trustee. The terms of the Notes are further described in the prospectus supplement of CERC dated May 15, 2006, together with the related prospectus dated September 14, 2005, as filed with the Securities and Exchange Commission under Rule 424(b)(2) of the Securities Act of 1933 on May 16, 2006, which description is incorporated herein by reference. A copy of the Underwriting Agreement, the Indenture and the form of Supplemental Indenture No. 9 (including the form of Note) have been filed as Exhibits 1.1, 4.1 and 4.2, respectively, to this report and are incorporated by reference herein. ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS. The exhibits listed below are filed herewith. (d) Exhibits. 1.1 Underwriting Agreement dated as of May 15, 2006, among CenterPoint Energy Resources Corp. and the several Underwriters named in Schedule I thereto. 4.1 Indenture dated as of February 1, 1998, between CenterPoint Energy Resources Corp. (formerly NorAm Energy Corp.) and JPMorgan Chase Bank, National Association (successor to Chase Bank of Texas, National Association), as trustee (the "Indenture") (incorporated by reference to Exhibit 4.1 to CERC's Current Report on Form 8-K dated February 5, 1998). 4.2 Form of Supplemental Indenture No. 9 dated as of May 18, 2006, to the Indenture between CenterPoint Energy Resources Corp. and JPMorgan Chase Bank, National Association, as trustee. 4.3 Form of Note (included in Exhibit 4.2 hereto). 5.1 Opinion of Baker Botts L.L.P. 23.1 Consent of Baker Botts L.L.P. (included in Exhibit 5.1 hereto). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. CENTERPOINT ENERGY RESOURCES CORP. Date: May 18, 2006 By: /s/ James S. Brian ------------------------------ James S. Brian Senior Vice President and Chief Accounting Officer EXHIBIT INDEX <Table> <Caption> EXHIBIT NUMBER EXHIBIT DESCRIPTION - ------- ------------------- 1.1 Underwriting Agreement dated as of May 15, 2006, among CenterPoint Energy Resources Corp. and the several Underwriters named in Schedule I thereto. 4.1 Indenture dated as of February 1, 1998, between CenterPoint Energy Resources Corp. (formerly NorAm Energy Corp.) and JPMorgan Chase Bank, National Association (successor to Chase Bank of Texas, National Association), as trustee (the "Indenture") (incorporated by reference to Exhibit 4.1 to CERC's Current Report on Form 8-K dated February 5, 1998). 4.2 Form of Supplemental Indenture No. 9 dated as of May 18, 2006, to the Indenture between CenterPoint Energy Resources Corp. and JPMorgan Chase Bank, National Association, as trustee. 4.3 Form of Note (included in Exhibit 4.2 hereto). 5.1 Opinion of Baker Botts L.L.P. 23.1 Consent of Baker Botts L.L.P. (included in Exhibit 5.1 hereto). </Table>