Primo Brands Corp

PRIMO BRANDS CORPORATION

1150 ASSEMBLY DRIVE, SUITE 800, TAMPA, FLORIDA 33607

900 LONG RIDGE ROAD, BUILDING 2, STAMFORD,

CONNECTICUT 06902

This proxy statement is furnished in connection with the solicitation by the Board of Directors (the “Board”) of Primo Brands Corporation of proxies to be voted at our 2026 Annual Meeting of Stockholders to be held on Tuesday, April 28, 2026 (the “Annual Meeting”), at 9:30 a.m., Eastern Time, and at any continuation, postponement, or adjournment of the Annual Meeting. The Annual Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Annual Meeting and submit your questions during the meeting by visitingwww.virtualshareholdermeeting.com/PRMB2026 and entering your 16-digit control number included in your Notice of Internet Availability of Proxy Materials, on your proxy card or on the instructions that accompanied your proxy materials.

Holders of record of outstanding shares of our Class A common stock (the “Common Stock”) at the close of business on March 5, 2026 (the “Record Date”) will be entitled to notice of and to vote at the Annual Meeting and any continuation, postponement, or adjournment of the Annual Meeting. Each holder of our Common Stock is entitled to one vote per share on each matter submitted to a vote of stockholders. At the close of business on the Record Date, there were 363,176,926 shares of Common Stock issued and outstanding and entitled to vote at the Annual Meeting.

This proxy statement and the Company’s Annual Report to Stockholders for the fiscal year ended December 31, 2025 (the “2025 Annual Report”) will be released on or about March 18, 2026 to our stockholders as of the Record Date.

In this proxy statement, “we,” “us,” “our,” the “Company” and “Primo Brands” refer to Primo Brands Corporation, and, unless otherwise stated, all of its subsidiaries, including Triton Water Parent, Inc. and Primo Water Corporation, which we refer to as “BlueTriton” and “Primo Water,” respectively, and unless otherwise stated, all of their respective subsidiaries. On November 8, 2024, Triton US HoldCo, Inc. completed a series of merger transactions involving BlueTriton and Primo Water, pursuant to which Primo Water and BlueTriton became wholly owned subsidiaries of Triton US Holdco, Inc. (including all related transactions, the “Transaction”). Triton US Holdco, Inc. was subsequently renamed Primo Brands Corporation. The Company became the successor issuer to Primo Water pursuant to Rule 12g-3(a) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Pursuant to Rule 12g-3(e) under the Exchange Act, our Common Stock was deemed to be registered under Section 12(b) of the Exchange Act, and the Company is subject to the informational requirements of the Exchange Act and the related rules and regulations. On November 11, 2024, our Common Stock began regular-way trading on the New York Stock Exchange (“NYSE”) under the ticker symbol “PRMB”.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDER MEETING TO BE HELD ON TUESDAY, APRIL 28, 2026

This Proxy Statement and our 2025 Annual Report are available athttp://www.proxyvote.com/

At the Annual Meeting, our stockholders will be asked: