X0201 4 2003-11-19 1 0001125057 ENCORE ACQUISITION CO EAC 0001106607 JP MORGAN PARTNERS BHCA LP C/O J.P. MORGAN PARTNERS, LLC 1221 AVENUE OF THE AMERICAS 40TH FLOOR NEW YORK NY 10020 0 0 1 0 Common Stock 2003-11-19 4 S 0 6000000 116265000 D 866643 I (FN 2) The reported securities were sold pursuant to a Stock Purchase Agreement, dated as of November 13, 2003, by and among Encore Acquisition Company ("EAC"), J.P. Morgan Partners (SBIC), LLC ("JPM SBIC") and Warburg, Pincus Equity Partners, L.P. in connection with a public offering of EAC's shares of Common Stock. JPM SBIC sold 6,000,000 shares of EAC's Common Stock at a price per share of $19.3775 and was issued an over-allotment option for a further 866,643 shares of EAC's Common Stock. The amounts shown represent the beneficial ownership of the Issuer's equity securities by JPM SBIC. The Reporting Person is the sole member of JPM SBIC. /s/Arnold L. Chavkin 2003-11-19