Company: PRMB
Filing Date: 2025-08-07
Form Type: 424B3
Source: 0002042694-25-000017
Chunk: 1

Company: Primo Brands Corp
Filing Date: 2025-08-07
Form: 424B3
Chunk 1
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     | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

#### For the quarterly period ended

#### June 30, 2025
| o |     | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

<div align='center'>For the transition period from ___________ to ___________</div>

#### Commission file number 001-42404
#### _________________________

#### Primo Brands Corporation
<div align='center'>(Exact name of registrant as specified in its charter)</div>

#### _________________________

| Delaware                                                     |     | 99-3483984                      |
| (State or other jurisdiction of                              
 incorporation or organization)                               |     | -I.R.S. Employer                
 Identification No.              |
| 1150 Assembly Drive, Suite 800                               
 Tampa, Florida 33607                                         |     | 900 Long Ridge Road, Building 2 
 Stamford, Connecticut 06902     |
| (Address of Principal Executive Offices, including zip code) |     |                                 |

<div align='center'>Registrant’s telephone number, including area code: (813) 544-8515</div>

#### N/A
<div align='center'>(Former name, former address and former fiscal year, if changed since last report)</div>

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class                             |     | Trading Symbol(s) |     | Name of each exchange on which registered |
| Class A common stock, $0.01 par value per share |     | PRMB              |     | The New York Stock Exchange               |

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x