Shareholder Vote

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): May 5, 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 5.07     Submission of Matters to a Vote of Security Holders. Pentair plc (the “Company”) held its 2026 annual general meeting of shareholders on May 5, 2026. There were 161,602,800 ordinary shares issued and outstanding at the close of business on March 6, 2026 and entitled to vote at the annual general meeting. A total of 147,387,379 ordinary shares (91.20%) were represented at the annual general meeting. The items voted upon at the annual general meeting and the results of the vote on each proposal were as follows: Proposal 1. — Re-Elect Director Nominees To re-elect nine director nominees for terms expiring at the 2027 annual general meeting of shareholders. Each nominee for director was re-elected by a vote of the shareholders as follows: Nominees      Votes For Votes Against Abstentions Broker Non-Votes Mona Abutaleb Stephenson 135,896,779 3,620,934 114,535 7,755,131 Melissa Barra 139,362,073 156,369 113,806 7,755,131 Tracey C. Doi 139,252,311 267,566 112,371 7,755,131 T. Michael Glenn 130,103,937 9,416,746 111,565 7,755,131 Theodore L. Harris 134,626,358 4,893,216 112,674 7,755,131 Gregory E. Knight 139,259,018 261,063 112,167 7,755,131 Michael T. Speetzen 134,211,698 5,308,458 112,092 7,755,131 John L. Stauch 137,849,784 1,662,339 120,125 7,755,131 Billie I. Williamson 127,476,246 12,044,684 111,318 7,755,131 Proposal 2. — Approve, by Nonbinding, Advisory Vote, the Compensation of the Named Executive Officers To approve, by nonbinding, advisory vote, the compensation of the Company’s named executive officers. The compensation of the Company’s named executive officers was approved by a nonbinding, advisory vote of the shareholders as follows: Votes For Votes Against Abstentions Broker Non-Votes 133,060,912 5,714,611 856,725 7,755,131 Proposal 3. — Ratify, by Nonbinding, Advisory Vote, the Appointment o f Deloitte & Touche LLP as the Independent Auditor of the Company and to Authorize, by Binding Vote, the Audit and Finance Committee of the Board of Directors to Set the Auditor’s Remuneration To ratify, by nonbinding, advisory vote, the appointment of Deloitte & Touche LLP as the Company’s independent auditor for the year ending December 31, 2026 and to authorize, by binding vote, the Audit and Finance Committee of the Board of Directors to set the independent auditor’s remuneration. The proposal was approved by a vote of the shareholders as follows: Votes For Votes Against Abstentions 127,122,042 20,172,130 93,207 Proposal 4. — Authorize the Board of Directors to Allot New Shares Under Irish Law To authorize t he Board of Directors to allot new shares under Irish law . The proposal was approved by a vote of the shareholders as follows: Votes For Votes Against Abstentions 145,388,731 1,881,991 116,657 Proposal 5. — Authorize the Board of Directors to Opt-Out of Statutory Preemption Rights Under Irish Law To authorize the Board of Directors to opt-out of statutory preemption rights under Irish law. The proposal was approved by a vote of the shareholders as follows: Votes For Votes Against Abstentions 129,439,361 17,795,153 152,865 Proposal 6. — Authorize the Price Range at Which the Company Can Re-Allot Shares It Holds as Treasury Shares Under Irish Law To authorize t he price range at which the Company can re-allot shares it holds as treasury shares under Irish law . The proposal was approved by a vote of the shareholders as follows: Votes For Votes Against Abstentions 146,136,706 1,132,550 118,123 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 May 6, 2026. PENTAIR PLC Registrant By: /s/ Lance T Bonner                     Lance T Bonner Executive Vice President, General Counsel and Secretary