X0303 4 2010-06-21 0 0000353230 OMNICARE INC NYSE: OCR 0001402233 Kobasuk Mark G 100 E. RIVERCENTER BLVD. SUITE 1600 COVINGTON KY 41011 0 1 0 0 VP - General Counsel Common Stock 2010-06-21 4 F 0 200 25.75 D 40925 D Common Stock 331 I Shares held in Savings & Investment Plan as of 03/31/2010. /s/ Thomas Marsh, attorney-in-fact for Mark G. Kobasuk (POA on file) 2010-06-22