$PRM

$28.10 +$0.30 (1.08%) Close

$PRM Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 163.7M shares outstanding

Who owns PRM?

By type of holder

Institutions 84.2% Insiders 8.6% Everyone else 7.3%

Concentration Top 10 holders own 51.4%

Windacre Partnership LLC 9.9% · Principal Financial Group Inc 8.6%

Institutional ownership

84.2%

+5.1 pts vs last qtr

Institutional holders

306

+15 vs last qtr

Net shares bought

+8.3M

by institutions in Q2 2026

New / sold out

63 / 48

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jupiter Topco LLC NEW +4.1M
Price T Rowe Associates Inc /MD/ +1.9M

Biggest sellers in Q2 2026

Windacre Partnership LLC −5.7M
Janus Henderson Group PLC SOLD OUT −4.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$68.7M

19 notices from 8 people

Shares covered

2.6M

1.56% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Edward Goldberg Officer $17.7M
William Thorndike Director $15.5M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2019–FY2025

+183.5%

+23.17% a year

Each share's claim on the business

−64.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$168M vs $45.7M

over 6 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years87% Under 1 year13%

Quarterly turnover

16.8%

of institutional shares changed hands

Top 10 managers, median time held

1.5 years

Super Investors

Investment managers reporting PRM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
WP Windacre Partnership LLC	16.1M	9.87%	−5.7M (−26.1%)	2024	5.7%
Shares held by quarter Peak holding21.9M (Q2'25) Change over 8 quarters+16.1M Share of the company9.870% Windacre Partnership LLC's full portfolio →
PF Principal Financial Group Inc	14.0M	8.56%	+1.5M (+11.9%)	2024	0.3%
Shares held by quarter Peak holding14.0M (Q2'26) Change over 8 quarters+14.0M Share of the company8.560% Principal Financial Group Inc's full portfolio →

Windacre Partnership LLC

16.1M

% of company

9.87%

Change vs last qtr

−5.7M (−26.1%)

Held since

2024

Principal Financial Group Inc

14.0M

% of company

8.56%

Change vs last qtr

+1.5M (+11.9%)

Held since

2024

28 more super investors behind a free account

See every manager holding Perimeter Solutions, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting PRM on Form N-PORT; together they hold 35.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
MF MidCap Fund Principal Funds, Inc	$287M	9.4M	5.74%	1.24%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$166M	4.7M	2.85%	0.01%	June 30, 2026

MidCap Fund

Principal Funds, Inc

Position value

$287M

% of company

5.74%

% of the fund

1.24%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$166M

% of company

2.85%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Perimeter Solutions, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
WN William N. Thorndike, Jr. 5%+ holder 13D · 5.7%	9.3M	5.69%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company5.690% Disclosed stake13D · 5.7% View the 13D/G filing →
HK Haitham Khouri Insider	3.1M	1.89%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.890% Haitham Khouri's insider activity →

William N. Thorndike, Jr.

5%+ holder13D · 5.7%

9.3M

% of company

5.69%

Change vs last qtr

—

Held since

—

Haitham Khouri

Insider

3.1M

% of company

1.89%

Change vs last qtr

—

Held since

—

8 more holders behind a free account

See every insider and 5%+ holder of Perimeter Solutions, Inc..

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