Sec Form 4 Filing - Tamaro Renato @ STERIS plc - 2018-05-30

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Tamaro Renato 2. Issuer Name and Ticker or Trading Symbol STERIS plc [ STE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) V.P. & Corporate Treasurer (Last) (First) (Middle) C/O RUTHERFORD HOUSE, STEPHENSONS WAY, CHADDESDEN 3. Date of Earliest Transaction (MM/DD/YY) 05/30/2018 (Street) DERBY, X0DE21 6LY 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Ordinary Shares, 10 pence par value 05/30/2018 F 145 ( 1 ) D $ 104.57 3,767 D Ordinary Shares, 10 pence par value 05/31/2018 A 484 ( 2 ) A $ 0 4,251 ( 3 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Option (right to buy) $ 114.22 05/31/2018 A 2,872 ( 4 ) 05/31/2028 Ordinary Shares 2,872 $ 0 2,872 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Tamaro Renato C/O RUTHERFORD HOUSE, STEPHENSONS WAY CHADDESDEN DERBY, X0DE21 6LY V.P. & Corporate Treasurer Signatures /s/ Ronald E. Snyder, Authorized Representative under Power of Attorney 06/01/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )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. ( 2 )All 484 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 484 on May 31, 2022. ( 3 )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. ( 4 )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.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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