X0306 4 2017-05-30 0 0001624899 Steris plc STE 0001578804 Zangerle John Adam C/O CHANCERY HOUSE, 190 WATERSIDE ROAD HAMILTON INDUSTRIAL PARK LEICESTER X0 LE5 1QZ UNITED KINGDOM 0 1 0 0 VP, Gen Counsel, and Sec. Ordinary Shares, 10 pence par value 2017-05-30 4 A 0 6000 0.00 A 29489 D Ordinary Shares, 10 pence par value 2017-05-31 4 F 0 1643 77.56 D 27846 D Employee Stock Option (right to buy) 77.07 2017-05-30 4 A 0 14000 0.00 A 2027-05-30 Ordinary Shares 14000 14000 D All 6,000 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 6,000 on June 1, 2021. 1,643 shares were withheld from the 5,000 restricted shares that vested on May 31, 2017. These 1,643 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 5,000 ordinary shares were awarded to Mr. Zangerle on May 31, 2013. These vested shares were valued at the NYSE closing market price on May 31, 2017. 17,752 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 2,252 on May 30, 2018; 3,000 on May 28, 2019; 4,000 on October 1, 2019; 2,500 on June 1, 2020 and 6,000 on June 1, 2021. This option becomes exercisable as follows: 3,500 on May 30, 2018; 3,500 on May 30, 2019; 3,500 on June 1, 2020 and 3,500 on June 1, 2021. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2017-06-01