Executive Change

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 10, 2018 Commission file number 001-11625 Pentair plc (Exact name of Registrant as specified in its charter) Ireland 98-1141328 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification number) Station Road, Longstanton, Cambridge, CB24 3DS, United Kingdom (Address of principal executive offices, including Zip Code) Registrant’s telephone number, including area code: 44-19-5426-2325 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ITEM 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On September 10, 2018, Matthew H. Peltz provided notice that he was resigning from the Board of Directors of Pentair plc (“Pentair”) effective as of that date. Since April 2018, Mr. Peltz has been a director of Pentair, where he served on its Governance and Compensation Committees. From September 2015 through April 2018, Mr. Peltz attended meetings of the Board of Directors of Pentair in an observer capacity. Trian Fund Management, L.P. (“Trian”) has informed Pentair that Trian believes Pentair is currently well positioned to succeed as a pure play water company following the spin-off of nVent Electric plc, and accordingly Trian believes it is the appropriate time for Mr. Peltz to step off the Pentair Board to devote more time to current and future board positions and his commitments to Trian. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized, on September 11, 2018. PENTAIR PLC Registrant By: /s/ Karla C. Robertson Karla C. Robertson Executive Vice President, General Counsel and Secretary