Perimeter Solutions, Inc. (PRM)
NYSE: PRM · Chemicals & Allied Products · Clayton, MO · filing with the SEC since 2021
Grade5.6
◀ Past 5.3● Present 5.1▶ Future 6.6
Who owns Perimeter Solutions, Inc.
As filed with the SECHolders of 5% or more
4
The WindAcre Partnership LLC holds 9.9% of Common Stock, par value $0.0001 per share, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
13
report now, of 20 people on the record since 2021. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
The WindAcre Partnership LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, par value $0.0001 per share
Principal Global Investors
SCHEDULE 13G/A · filed Aug 5, 2026 · Common Stock, par value $0.0001 per share
Fmr LLC
SCHEDULE 13G · filed Nov 5, 2025 · COMMON STOCK
William N. Thorndike, Jr.
SCHEDULE 13D · filed Mar 10, 2026 · Common Stock
Matrix Capital Management Company LP
SCHEDULE 13G/A · filed Feb 12, 2025 · Common stock, par value $0.0001 per share · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 5.61% in Jan 31, 2025
What PRM reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Assets and Technical Data Rights
A company bought · acquisition · Oct 2025 · owns, named in the 10-K filed Feb 26, 2026
IMS DE Holdings, LLC
A company bought · acquisition · owns, named in the 10-K filed Feb 26, 2026
LaderaTech, Inc
A company bought · acquisition · owns, named in the 10-K filed Feb 26, 2026
24 subsidiaries in 7 countries, from the list filed with the 10-K filed Feb 26, 2026.
Insider tradesForm 4
21sales
0purchases
0sales on a scheduled plan
5people selling
$44.0Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window7 of 25 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Amin Snehal | 10% owner | 7 | $196M | 0 | 0 | $0 |
| Windacre Partnership LLC | 10% owner | 7 | $196M | 0 | 0 | $0 |
| Thorndike William N Jr | director | 7 | $15.4M | 0 | 0 | $0 |
| Sable Kyle | Chief Financial Officer | 6 | $10.8M | 0 | 0 | $0 |
| Haitham Khouri | Chief Executive Officer | 3 | $7.3M | 0 | 0 | $0 |
| Emery Jeffrey | President - Global Fire Safety | 4 | $6.6M | 0 | 0 | $0 |
| Yokozuka Noriko | General Counsel | 1 | $3.9M | 0 | 0 | $0 |