X0201 4 2004-01-02 0 0001000736 CAREMARK RX INC CMX 0001192145 HEADRICK ROGER L 211 COMMERCE STREET SUITE 800 NASHVILLE 37201 1 0 0 0 Common Stock, par value $.001 36000 D Common Stock, par value $.001 1250 I Held by Spouse Stock Option 25.14 2004-01-02 4 A 0 25000 0 A 2004-01-02 2014-01-02 Common Stock, par value $.001 25000 25000 D Stock Option 18.625 1997-01-31 2007-01-31 Common Stock, par value $.001 25000 25000 D Stock Option 3.25 1998-10-19 2008-10-19 Common Stock, par value $.001 50000 50000 D Stock Option 5.4375 1999-01-27 2009-01-27 Common Stock, par value $.001 50000 50000 D Stock Option 3.8750 2000-03-08 2010-03-08 Common Stock, par value $.001 25000 25000 D Stock Option 12.25 2001-01-12 2011-01-12 Common Stock, par value $.001 25000 25000 D Stock Option 15.80 2002-01-02 2012-01-02 Common Stock, par value $.001 25000 25000 D Stock Units Common Stock, par value $.001 1680.30 1680.30 D Stock Units Common Stock, par value $.001 339.41 339.41 D Stock Units Common Stock, par value $.001 280.44 280.44 D Stock Options 17.20 2003-02-25 2013-02-25 Common Stock, par value $.001 25000 25000 D Stock Units Common Stock, par value $.001 4747.881 4747.881 D Previously reported, for information purposes only. 34% of these options are exercisable on the grant date, and 33% are exercisable on each of the 1st and 2nd anniversaries of the grant date. These stock units were accrued under the Caremark Rx, Inc. Director Deferred Compensation Plan, pursuant to which the reporting person has deferred an annual retainer and/or meeting fees. The reporting person may elect payment of the stock units in the form of a lump sum payment of Caremark Rx, Inc. common stock no earlier than 4 years after the last day of the calendar year in which the compensation attributable to the stock unit was deferred. Payment will be made within a reasonably practicable period of time following the earlier of a change of control (as defined in the plan) or the cessation of the reporting person's status as a non-employee member of Caremark Rx, Inc.'s Board of Directors. /s/ Roger Headrick 2004-03-18