X0304 4 2012-03-12 0 0000861878 STERICYCLE INC SRCL 0001021410 MILLER MARK C C/O STERICYCLE INC. 28161 N KEITH DRIVE LAKE FOREST IL 60045 1 1 0 0 Chairman and CEO common stock 2012-03-12 4 S 0 5441 87.9542 D 315827 I LLC The reporting person disclaims any beneficial interest in the 82.49% interest in the LLC held trusts for the benefit of his adult sons. The reporting person does not have any transactions to report in respect of the 425,453 shares the he owns directly. Mark C. Miller 2012-03-14