SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 ENCORE ACQUISITION COMPANY (Exact Name of Registrant as Specified in its Charter) Delaware 75-2759650 (State of Incorporation (I.R.S. Employer or Organization) Identification no.) 777 Main Street, Suite 1400 Fort Worth, Texas 76102 (Address of Principal Executive Offices) (Zip Code) If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), please check the following box. [X] If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), please check the following box. [ ] Securities Act registration statement file number to which this form relates: 333-47540 Securities to be registered pursuant to Section 12(b) of the Act: Title of Each Class Name of Each Exchange on Which to be so Registered Each Class is to be Registered - --------------------------- ------------------------------- Common Stock, New York Stock Exchange par value $.01 per share Securities to be registered pursuant to Section 12(g) of the Act: None Item 1. Description of Registrant's Securities to be Registered. Reference is made to the information set forth under the sections captioned "Description of Capital Stock" and "Shares Available For Future Sale" in the Prospectus forming a part of the Registrant's Registration Statement on Amendment No. 1 to Form S-1, Registration No. 333-47540, filed with the Securities and Exchange Commission on December 15, 2000, which is incorporated herein by reference. Item 2. Exhibits. 3.1 Form of Second Amended and Restated Certificate of Incorporation of Encore Acquisition Company (incorporated by reference to Exhibit 3.1 to the Registrant's Registration Statement on Amendment No. 1 to Form S-1, Registration No. 333-47540, filed with the Securities and Exchange Commission on December 15, 2000.) 3.2 Form of Second Amended and Restated By-Laws of Encore Acquisition Company (incorporated by reference to Exhibit 3.2 to the Registrant's Registration Statement on Amendment No. 1 to Form S-1, Registration No. 333-47540, filed with the Securities and Exchange Commission on December 15, 2000.) 4.1 Specimen certificate of Encore Acquisition Company (incorporated by reference to Exhibit 4.1 to the Registrant's Registration Statement on Amendment No. 1 to Form S-1, Registration No. 333-47540, filed with the Securities and Exchange Commission on December 15, 2000.) 99.1 Registration Statement on Amendment No. 1 to Form S-1, Registration No. 333-47540, filed with the Securities and Exchange Commission on December 15, 2000. SIGNATURE Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized. ENCORE ACQUISITION COMPANY Date 12/21/00 By: /s/ I. Jon Brumley I. Jon Brumley Chairman, President and Chief Executive Officer