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): April 24, 2026 Pentair plc (Exact name of registrant as specified in its charter)     Ireland 001-11625 98-1141328 (State or other jurisdiction of incorporation or organization) (Commission File No.) (I.R.S. Employer Identification No.) Regal House , 70 London Road , Twickenham, London , TW13QS United Kingdom          (Address of principal executive offices)        (Zip Code) Registrant’s telephone number, including area code: 44 - 74 - 9421-6154   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)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Ordinary Shares, nominal value $0.01 per share PNR New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act (17 CFR 230.405) or Rule 12b-2 of the Exchange Act (17 CFR 240.12b-2). ☐ 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 April 24, 2026, Jerome O. Pedretti, the Executive Vice President and Chief Executive Officer, Pool of Pentair plc (the “Company”), elected to resign from the Company effective as of July 1, 2026. On April 28, 2026, the Company announced it was eliminating the role of Chief Executive Officer, Pool. In conjunction with this change, Mr. Pedretti’s resignation will entitle him to severance benefits according to the terms of the Pentair plc Executive Officer Severance Plan, subject to the conditions therein. On April 28, 2026, the Company also announced that it appointed De’Mon L. Wiggins, the current Executive Vice President and President, Flow and Water Solutions of the Company, as the Company’s Executive Vice President and President, Flow, Water Solutions and Pool, effective as of April 28, 2026. ITEM 9.01    Financial Statements and Exhibits (a) Financial Statements of Businesses Acquired Not applicable. (b) Pro Forma Financial Information Not applicable. (c) Shell Company Transactions Not applicable. (d) Exhibits EXHIBIT INDEX Exhibit Description 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 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, thereunto duly authorized, on April 28, 2026. PENTAIR PLC Registrant By /s/ Lance T Bonner Lance T Bonner Executive Vice President, General Counsel and Secretary