X0201 4 2004-02-10 0 0001066745 ESPERION THERAPEUTICS INC/MI ESPR 0001242613 MAYLEBEN TIMOTHY M 3621 SOUTH STATE STREET 695 KMS PLACE ANN ARBOR MI 48108 0 1 0 0 Chief Operating Officer Stock Option (right to buy) 2004-02-10 4 D 0 353934.0000 D Common Stock 353934.0000 0 D These options, with exercise prices ranging from $5.00 to $9.94, and which provided for vesting in 16 equal quarterly installments at the end of each 3-month period from the date of the grant, were canceled pursuant to the Agreement and Plan of Merger dated 12/19/03, as amended on 1/16/04, by and among Esperion, Enzo Aquisition Corp. and Pfizer Inc. Vested options were canceled in exchange for a cash payment representing the difference between the exercise prices of the options and the market value of the underlying common stock on the effective date of the merger ($35). With respect to the cash payment attributable to the unvested options, the Reporting Person will receive 50% of such cash payment immediately following the merger, and the remainder of such cash payment will be paid with interest on the third anniversary of the effective date of the merger, provided that the Reporting Person continues to be an employee of Esperion, Pfizer or any of their affiliates. The expiration dates of these options range from January 9, 2011 to February 6, 2013. Christine K. Ballman, by power of attorney 2004-02-12