X0306 4 2014-05-20 0 0000815065 STERIS CORP STE 0001431082 Johnson David Allen 5960 HEISLEY ROAD MENTOR OH 44060 0 1 0 0 Sr. VP. Surgical Solutions Common Shares, No Par Value 2014-05-20 4 F 0 874 52.66 D 16026 D 874 shares were withheld from the 2,700 restricted shares that vested on May 20, 2014. These 874 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These 2,700 shares were awarded to Mr. Johnson on May 20, 2010. These vested shares were valued at the NYSE closing market price on May 20, 2014. 14,200 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 3,700 on June 1, 2015; 3,500 on May 31, 2016 and 7,000 May 31, 2017. /s/ Dennis P. Patton, Authorized Representative under Power of Attorney 2014-05-22