X0306 4 2017-06-08 0 0001624899 Steris plc STE 0001237389 WILSON LOYAL W C/O CHANCERY HOUSE, 190 WATERSIDE ROAD HAMILTON INDUSTRIAL PARK LEICESTER X0 LE5 1QZ UNITED KINGDOM 1 0 0 0 Ordinary Shares, 10 pence par value 2017-06-08 4 M 0 1290 27.68 A 27115 D Ordinary Shares, 10 pence par value 2017-06-08 4 M 0 2097 27.68 A 29212 D Ordinary Shares, 10 pence par value 2017-06-08 4 F 0 725 80.10 D 28487 D Director Stock Option (right to buy) 27.68 2017-06-08 4 M 0 1290 0.00 D 2017-07-27 Ordinary Shares, 3387 2097 D Director Stock Option (right to buy) 27.68 2017-06-08 4 M 0 2097 0.00 D 2017-07-27 Ordinary Shares, 2097 0 D Net - Cashless Stock Option Exercise - Options to Purchase 725 shares were surrendered to the Company for payment of the option price. Options surrendered were valued based on the Company stock closing market price on the NYSE on the day on which the Net - Cashless Stock Option Exercise occurred. This option to purchase 3,387 STERIS plc ordinary shares, which is fully vested, was received in the Merger in exchange for an option to purchase 3,387 STERIS Corporation common shares for $27.68 per share, subject to the same terms and conditions as the original STERIS Corporation stock option. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2017-06-12