Company: PRMB
Filing Date: 2025-12-05
Form Type: 424B3
Source: 0001193125-25-309678
Chunk: 26

Company: Primo Brands Corp
Filing Date: 2025-12-05
Form: 424B3
Chunk 26
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 Common Stock |   |
| Triton Water Equity Holdings, LP(1) |     |                      | 116,210,806 |     |                             | 116,210,806 |     |                      | — |

| (1) | Represents 116,210,806 shares of Class A common stock held by Triton Water Equity Holdings, LP. All of the                                                                                                                                               
 shares held by Triton Water Equity Holdings, LP have been pledged as collateral pursuant to a margin loan. ORCP III DE TopCo GP, LLC is the general partner of Triton Water Parent Holdings, LP. Triton Water Parent Holdings, LP is the managing member 
 of Triton Water Equity Holdings, GP, LLC, which is the general partner of Triton Water Equity Holdings, LP. R. Scott Spielvogel and Tony W. Lee are the managing members of ORCP III DE TopCo GP, LLC and have share voting and investment discretion    
 with respect to the securities held of record by Triton Water Equity Holdings, LP. Accordingly, each of the persons and entities named in this footnote may be deemed to share beneficial ownership of the securities held of record by Triton Water     
 Equity Holdings, LP. The principal business address of each of the entities and persons identified in this footnote is c/o One Rock Capital Partners, LLC, 45 Rockefeller Plaza, 39th Floor, New York, NY 10111.                                         |

21

PLAN OF DISTRIBUTION The selling stockholder, which, as used herein, includes its Permitted Transferees, donees, pledgees, transferees, or other successors-in-interest(as a gift, pledge, partnership distribution, or other non-salerelated transfer) selling securities received after the date of this prospectus from the selling stockholder that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part (collectively, the “holders”), may, from time to time, sell, transfer, or otherwise dispose of any or all of their shares on the NYSE or any other stock exchange, market, or trading facility on which such shares are traded or in private transactions. These dispositions may be at fixed prices, at prevailing market prices at the time of sale, at prices related to the prevailing market price, at varying prices determined at the time of sale, or at negotiated prices. We have registered the offer and sale of the securities covered by this prospectus so that those