X0306 4 2018-11-07 0 0001624899 STERIS plc STE 0001413087 Rosebrough Walter M Jr C/O RUTHERFORD HOUSE, STEPHENSONS WAY CHADDESDEN DERBY X0 DE21 6LY UNITED KINGDOM 1 1 0 0 President & CEO Ordinary Shares, 10 pence par value 48895 D Ordinary Shares, 10 pence par value 2018-11-07 4 S 0 10000 120.50 D 18000 I See Footnote Below. These 48,895 ordinary shares are held by the Reporting Person as Trustee of a revocable trust established for his benefit. 37,375 of these Ordinary Shares are restricted. The restrictions on the restricted Ordinary Shares lapse as follows: 3,625 on May 28, 2019; 4,000 on May 30, 2019; 3,097 on May 31, 2019; 4,681 on June 3, 2019; 4,681 on June 1, 2020; 4,000 on June 1, 2020; 3,097 on June 1, 2020; 4,000 on June 1, 2021; 3,097 on June 1, 2021 and 3,097 on May 31, 2022. This sale of a total of 10,000 shares, held by the Reporting Person's Spouse as Trustee of a revocable trust established for her benefit, was pursuant to a Rule 10b5-1 Stock Trading Plan entered into by the Reporting Person's Spouse, as Trustee, on May 21, 2018. These ordinary shares are held by the Reporting Person's Spouse as Trustee of a revocable trust established for her benefit. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2018-11-08