X0306 4 2018-05-30 0 0001624899 STERIS plc STE 0001713987 Tamaro Renato C/O RUTHERFORD HOUSE, STEPHENSONS WAY CHADDESDEN DERBY X0 DE21 6LY UNITED KINGDOM 0 1 0 0 V.P. & Corporate Treasurer Ordinary Shares, 10 pence par value 2018-05-30 4 F 0 145 104.57 D 3767 D Ordinary Shares, 10 pence par value 2018-05-31 4 A 0 484 0.00 A 4251 D Employee Stock Option (right to buy) 114.22 2018-05-31 4 A 0 2872 0.00 A 2028-05-31 Ordinary Shares 2872 2872 D 145 shares were withheld from the 500 restricted shares that vested on May 30, 2018. These 145 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These 500 shares were awarded to Mr. Tamaro on May 30, 2014 as part of an award of 500 restricted shares. These vested shares were valued at the NYSE closing market price on May 30, 2018. All 484 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 484 on May 31, 2022. 2,396 of these shares are restricted. The restrictions on the ordinary shares lapse as follows: 500 on May 28, 2019; 600 on October 1, 2019; 400 on June 1, 2020; 412 on June 1, 2021 and 484 on May 31, 2022. This option becomes exercisable as follows: 718 on May 31, 2019; 718 on June 1, 2020; 718 on June 1, 2021 and 718 on May 31, 2022. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2018-06-01