X0306 4 2019-06-06 0 0001757898 STERIS plc STE 0001657245 Steeves Richard Martin C/O 70 SIR JOHN ROGERSON'S QUAY DUBLIN L2 2 IRELAND 1 0 0 0 Ordinary Shares 9362 D Ordinary Shares 2019-06-06 4 S 0 17565 136.24 D 88795 I See Footnote Below. Ordinary Shares 2019-06-06 4 S 0 53000 136.93 D 35795 I See Footnote Below. Ordinary Shares 2019-06-06 4 S 0 2302 137.60 D 33493 I See Footnote Below. Ordinary Shares 207550 I See Footnote Below. Price reflects a weighted average sale price for multiple transactions ranging from $135.56 to $136.55 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. These ordinary shares are held in a trust. Price reflects a weighted average sale price for multiple transactions ranging from $136.56 to $137.55 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. Price reflects a weighted average sale price for multiple transactions ranging from $137.56 to $137.67 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. These ordinary shares are held by the reporting person's spouse. /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 2019-06-10