Perimeter Solutions Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:PRM Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
11 Mar 26	SellUS$7,601,921	William Thorndike	Individual	325,000	US$23.85
10 Mar 26	SellUS$5,284,250	William Thorndike	Individual	225,000	US$23.63
06 Mar 26	SellUS$7,801,500	William Thorndike	Individual	325,000	US$24.26
11 Sep 25	SellUS$561,250	Vivek Raj	Individual	25,000	US$22.45
27 Jun 25	BuyUS$3,559,308	The WindAcre Partnership LLC	Company	254,600	US$13.98
21 May 25	SellUS$374,400	Vivek Raj	Individual	32,000	US$11.70
20 May 25	SellUS$3,166,710	Vivek Raj	Individual	268,810	US$11.84
15 May 25	SellUS$1,219,910	Vivek Raj	Individual	102,284	US$12.22

Insider Trading Volume

Insider Buying: PRM insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of PRM?
Owner Type	Number of Shares	Ownership Percentage
State or Government	5,308	0.00348%
Individual Insiders	17,802,002	11.7%
Institutions	134,899,707	88.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 79.97% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
14.6%	The WindAcre Partnership LLC	21,854,600	US$497.4m	0%	6.15%
7.29%	Principal Global Investors, LLC	10,891,780	US$247.9m	-1.16%	0.11%
7.27%	BlackRock, Inc.	10,866,996	US$247.3m	2.08%	no data
5.87%	FMR LLC	8,766,849	US$199.5m	-10.1%	0.01%
5.74%	The Vanguard Group, Inc.	8,570,699	US$195.1m	1.86%	no data
5.71%	William Thorndike	8,535,656	US$194.3m	137%	no data
3.4%	Walter Howley	5,086,840	US$115.8m	739%	no data
3.17%	Dimensional Fund Advisors LP	4,735,822	US$107.8m	-7.96%	0.01%
2.65%	The Cleveland Foundation	3,965,105	US$90.2m	0%	no data
2.47%	Janus Henderson Group plc	3,691,773	US$84.0m	54.9%	0.03%
2.29%	Geode Capital Management, LLC	3,421,820	US$77.9m	3.71%	no data
2.14%	State Street Global Advisors, Inc.	3,200,527	US$72.8m	1.9%	no data
1.7%	D.F. Dent and Company, Inc.	2,535,404	US$57.7m	-7.76%	0.93%
1.68%	Balance Capital Partners L.P.	2,510,521	US$57.1m	0%	53.92%
1.57%	Senator Investment Group LP	2,348,000	US$53.4m	11.8%	2.36%
1.51%	Brown Brothers Harriman & Co.	2,259,089	US$51.4m	-18.4%	0.27%
1.49%	JP Morgan Asset Management	2,226,301	US$50.7m	-25.2%	no data
1.43%	Arrowstreet Capital, Limited Partnership	2,132,437	US$48.5m	0.01%	0.03%
1.36%	Corient Private Wealth LLC	2,034,505	US$46.3m	-17.7%	0.06%
1.28%	Equitable Trust Company	1,916,010	US$43.6m	-7.07%	2.0%
1.18%	T. Rowe Price Group, Inc.	1,768,098	US$40.2m	-8.24%	no data
1.16%	Haitham Khouri	1,729,218	US$39.4m	0%	no data
1.1%	PRIMECAP Management Company	1,644,081	US$37.4m	-19.8%	0.03%
0.97%	Managed Account Advisors LLC	1,454,471	US$33.1m	2.81%	0.01%
0.91%	Northern Trust Global Investments	1,366,933	US$31.1m	-7.2%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/03/15 02:25
End of Day Share Price	2026/03/13 00:00
Earnings	2025/12/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Perimeter Solutions, Inc. is covered by 3 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Daniel Kutz	Morgan Stanley
Joseph Laetsch	Morgan Stanley
Joshua Spector	UBS Investment Bank