STE STERIS plc

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

SPECIALIZED DISCLOSURE REPORT

70 Sir John Rogerson’s Quay, Dublin 2, Ireland

DE21 6LY

(Address of principal executive offices)

J. Adam Zangerle

Registrant’s telephone number, including area code: + 353 1 232 2000

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

Section 1 – Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

Conflict Minerals Disclosure

This Form SD of STERIS plc is filed pursuant to Rule 13p-1 under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1 through December 31, 2019.

We have evaluated our current product lines and determined that certain products we manufacture or contract to manufacture may contain tin, tungsten, tantalum and/or gold.

The brief description of our reasonable country of origin inquiry (“RCOI”) process, the results of our inquiry, and the determination we reached as a result of our RCOI process are included in our Conflict Minerals Report attached as an exhibit to this Form SD.

A copy of the Company’s Conflict Minerals Report is filed as Exhibit 1.01 hereto and is publicly available at: https://sterisplc.gcs-web.com/financials/sec-filings. The content of any website referred to in this Form SD is not incorporated by reference in this Form SD.

Item 1.02 Exhibit

A copy of the Company’s Conflict Minerals Report as required by Item 1.01 is filed as Exhibit 1.01 hereto.

Section 2 – Exhibits

Item 2.01 Exhibits

The following exhibit is filed as part of this report.

Exhibit 1.01 – Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

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