X0306 4 2017-05-30 0 0001624899 Steris plc STE 0001651806 Carestio Daniel A C/O CHANCERY HOUSE, 190 WATERSIDE ROAD HAMILTON INDUSTRIAL PARK LEICESTER X0 LE5 1QZ UNITED KINGDOM 0 1 0 0 Sr. V. P. STE AST & Life Sci Ordinary Shares, 10 pence par value 2017-05-30 4 A 0 5500 0.00 A 23300 D Ordinary Shares, 10 pence par value 2017-05-31 4 F 0 1085 77.56 D 22215 D Employee Stock Option (right to buy) 77.07 2017-05-30 4 A 0 18000 0.00 A 2027-05-30 Ordinary Shares 18000 18000 D All 5,500 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 5,500 on June 1, 2021. 1,085 shares were withheld from the 3,300 restricted shares that vested on May 31, 2017. These 1,085 ordinary shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These 3,300 ordinary shares were awarded to Mr. Carestio on May 31, 2013. These vested shares were valued at the NYSE closing market price on May 31, 2017. 20,000 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 4,000 on May 30, 2018; 5,000 on May 28, 2019; 2,500 on June 1, 2020; 3,000 on October 1, 2019 and 5,500 on June 1, 2021. This option becomes exercisable as follows: 4,500 on May 30, 2018; 4,500 on May 30, 2019; 4,500 on June 1, 2020 and 4,500 on June 1, 2021. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2017-06-01