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Livermore
Livermore
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Perimeter Solutions, Inc.

PRM
Exchange
NYSE
Industry
Chemicals & Allied Products
SEC CIK
0001880319

No open-market purchases or sales by Perimeter Solutions, Inc. insiders were filed in the last 90 days; 310 institutions reported holding it in 13F filings for Q2 2026, worth $4.98B in total; superinvestors Weitz Investment Management and Akre Capital Management hold it.

Holders of 5% or more of PRM

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Perimeter Solutions, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of PRM
HolderLatest formStakeChangeFirst filedLatest filingFiling
FMR LLC13G6.70%9.76M sharesNewNov 5, 20251 filingNov 5, 2025SEC
Thorndike William N Jr13D5.70%9.31M sharesNewMar 10, 20261 filingMar 10, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

5 Schedule 13D and 13G filings on Perimeter Solutions, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on PRM
Filed (ET)FilerFormStakeChangeEvent dateFiling
Mar 26, 202610:50 AM ETVanguard Group Inc13G/A0.00%0 shares−5.61 ppfrom 5.61%Below 5%Mar 13, 2026SEC
Mar 10, 20266:12 PM ETThorndike William N Jr13D5.70%9.31M sharesNewMar 3, 2026SEC
Nov 5, 202511:44 AM ETFMR LLCand 1 other13G6.70%9.76M sharesNewSep 30, 2025SEC
Feb 12, 20255:00 PM ETMatrix Capital Management Company, LPand 1 other13G/A4.48%6.55M shares–Below 5%Dec 31, 2024SEC
Jan 31, 20259:54 AM ETVanguard Group Inc13G5.61%8.21M sharesNewDec 31, 2024SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Perimeter Solutions, Inc. shares.

No Form 144 notices for Perimeter Solutions, Inc. are on file.