Company:  CATALYST HEALTH SOLUTIONS ...
Form Type:  DEFA14A
Filing Date:  4/18/2012 
CIK:  0001090403 
Address:  800 KING FARM BOULEVARD 
City, State, Zip:  ROCKVILLE, Maryland 20850 
Telephone:  (301) 548-2900 
Fiscal Year:  12/31 
Description of Business
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  FORM DEFA14A
    Item 7.01 Regulation FD Disclosure.
  EXHIBIT 99.1
  EXHIBIT 99.2
  EXHIBIT 99.3
  EXHIBIT 99.4