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PRM · Perimeter Solutions, Inc.
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PRM Perimeter Solutions (PRM) Insider Trading, Ownership & Congress Trades

Pharma & Biotech · Chemicals & allied products · CIK 0001880319
Quote by TradingView
SEC filings
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
203
13F, latest reported quarter
Conversions, 180 days
8
Codes C/M, not in net · $3.7M priced

What the filings say about PRM

Insiders, 180 days
-$217.5M net sold
4 sellers · 0% of sales under a 10b5-1 plan

Perimeter Solutions insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, Perimeter Solutions, Inc. insiders sold a net $217.5M of stock across 57 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-28.

Insider
Filed
Shares
Value
Since filing
WINDACRE PARTNERSHIP LLC
SELL
2026-07-13 SECtraded 2026-06-30
1,875,000
$63.6M
-15.7%
Context
  • 6 earlier Form 4 trades (code P or S) here by this insider (6 sales), the last on Jun 29, 2026.
  • The trade is 11.6% of the 16,148,621 shares held after it.
  • No other insider sold within 30 days.
  • 203 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider WINDACRE PARTNERSHIP LLC sold about $63.6M of PRM on Jun 30, 2026; 203 funds added in the latest 13F quarter.
WINDACRE PARTNERSHIP LLC
SELL
2026-07-13 SECtraded 2026-06-29
437,500
$14.4M
-15.7%
Context
  • 5 earlier Form 4 trades (code P or S) here by this insider (5 sales), the last on Jun 26, 2026.
  • The trade is 2.4% of the 18,023,621 shares held after it.
  • No other insider sold within 30 days.
  • 203 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider WINDACRE PARTNERSHIP LLC sold about $14.4M of PRM on Jun 29, 2026; 203 funds added in the latest 13F quarter.
WINDACRE PARTNERSHIP LLC
SELL
2026-07-13 SECtraded 2026-06-26
378,600
$13.7M
-15.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 1.8% of the 21,476,000 shares held after it.
  • No other insider sold within 30 days.
  • 203 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider WINDACRE PARTNERSHIP LLC sold about $13.7M of PRM on Jun 26, 2026, the largest insider sale at the company on our record; 203 funds added in the latest 13F quarter.
WINDACRE PARTNERSHIP LLC
SELL
2026-07-13 SECtraded 2026-06-26
150,000
$5.2M
-15.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 0.7% of the 21,326,000 shares held after it.
  • No other insider sold within 30 days.
  • 203 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider WINDACRE PARTNERSHIP LLC sold about $5.2M of PRM on Jun 26, 2026; 203 funds added in the latest 13F quarter.
WINDACRE PARTNERSHIP LLC
SELL
2026-07-13 SECtraded 2026-06-26
2,296,400
$79.0M
-15.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 12.1% of the 19,029,600 shares held after it.
  • No other insider sold within 30 days.
  • 203 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider WINDACRE PARTNERSHIP LLC sold about $79.0M of PRM on Jun 26, 2026, the largest insider sale at the company on our record; 203 funds added in the latest 13F quarter.
57 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
Showing the latest few. to see 52 more transactions and use the screener and CSV export. We store only your email; there is no password.
Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$217.5M over 180 days
-$195.6M of it by a 10%+ holder
below 99% of Pharma & Biotech
Congress
no House purchase disclosed in the last 12 months
Funds
203 funds bought in last quarter
more than 90% of Pharma & Biotech
Revenue
+16.4% year over year
more than 63% of Pharma & Biotech
Margin
-31.6% net margin
more than 54% of Pharma & Biotech
Buybacks
$40.4M repurchased, FY to 2025-12-31
more than 53% of Pharma & Biotech
Short interest
4.4% of the float short (float per yahoo 2026-10-26) · 4.3 days to cover · settled 2026-09-30
below 54% of Pharma & Biotech
The situation: each line is one rule over one dataset
Federal contracts worth $108.0M were awarded in the last 180 days.
What changed in the last 30 days
Oct 28Insider selling stopped: no sales in 90 days after 19 in the prior 90
Why it matters
The absence is the signal: 19 sales in one 90-day window and none in the next is a change of behaviour, not a filing.

Watch PRM

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+29.4%12M
-5%+21%+48%+74%2025-102025-122026-022026-042026-062026-082026-10 2026-06-26 · WINDACRE PARTNERSHIP LLC sold $79.0M2026-06-30 · WINDACRE PARTNERSHIP LLC sold $63.6M2026-06-26 · WINDACRE PARTNERSHIP LLC sold $18.9M2026-06-29 · WINDACRE PARTNERSHIP LLC sold $14.4M2026-06-26 · WINDACRE PARTNERSHIP LLC sold $13.7M2026-06-26 · WINDACRE PARTNERSHIP LLC sold $5.2M2026-05-08 · Sable Kyle sold $4.7M2025-12-12 · Yokozuka Noriko sold $3.9M2026-05-22 · Khouri Haitham sold $3.7M2026-05-11 · Emery Jeffrey sold $3.2M2026-03-04 · Thorndike William N Jr sold $3.0M2026-05-21 · Khouri Haitham sold $2.9M2025-12-12 · Sable Kyle sold $2.8M2026-03-05 · Thorndike William N Jr sold $2.4M2026-03-06 · Thorndike William N Jr sold $2.4M2026-03-10 · Thorndike William N Jr sold $2.4M2026-03-11 · Thorndike William N Jr sold $2.3M2026-03-09 · Thorndike William N Jr sold $2.1M2026-05-13 · Emery Jeffrey sold $1.8M2026-05-13 · Sable Kyle sold $1.5M2026-05-08 · Emery Jeffrey sold $1.5M2026-05-12 · Sable Kyle sold $952.5K2026-03-09 · Thorndike William N Jr sold $833.7K2026-06-26 · WINDACRE PARTNERSHIP LLC sold $725.0K2026-05-20 · Khouri Haitham sold $692.0K2026-05-11 · Sable Kyle sold $672.9K2026-05-13 · Sable Kyle sold $110.1K2026-05-11 · Emery Jeffrey sold $71.8K2026-03-10 · William N. Thorndike, Jr. filed a 5%+ stake (5.7%)
Insider sell13D/G stake
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns PRM: institutional holders (13F)

13F holdings, latest reported quarter
WINDACRE PARTNERSHIP LLC
16,148,621 sh
$575.7M
PRINCIPAL FINANCIAL GROUP INC
14,007,326 sh
$499.4M
BlackRock, Inc.
12,170,113 sh
$433.9M
FMR LLC
9,602,473 sh
$342.3M
VANGUARD CAPITAL MANAGEMENT LLC
6,587,147 sh
$234.8M

Congress trades in PRM

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

13D: intends to influence · 13G: passive
William N. Thorndike, Jr.
Activist 13D · 2026-03-10
5.7%

PRM planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.

PRM mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
DF DENT SMALL CAP GROWTH FUND
$10.8M position · as of 2026-06-30
6.4%
iMGP Small Company Fund
$2.3M position · as of 2026-06-30
4.2%
Weitz Multi Cap Equity Fund
$15.8M position · as of 2026-06-30
3.2%
Invesco Dorsey Wright Basic Materials Momentum ETF
$1.9M position · as of 2026-07-31
2.7%
Rainwater Equity ETF
$385.9K position · as of 2026-07-31
2.2%
LKCM Small-Mid Cap Equity Fund
$1.0M position · as of 2026-06-30
2.2%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Government contracts
Award ceilings over the contract's life, subsidiaries included. Not annual revenue (USASpending.gov).
Department Of The Interior
2026 NATIONAL FIRE RETARDANT CONTRACT · 2026-05-14
$108.0M
Department Of Agriculture
FAM RETARDANT - FULL SERVICE, 2026 IQ-NOCOMMIT CONTINUANCE OF TASK ORDER 1202SC26K2501 · 2026-01-01
$62.4M
Department Of Agriculture
FAM RETARDANT - FULL SERVICE, 2026 IQ-NOCOMMIT · 2026-01-01
$49.8M
Department Of Agriculture
NATIONAL RETARDANT - BULK 2026 - INITIAL FUNDING $20M · 2026-01-01
$30.0M
Department Of Agriculture
RETARDANT ON-DEMAND BPA PERIMETER FY26 · 2026-01-01
$26.3M
Department Of Agriculture
FAM RETARDANT - FULL SERVICE, 2026 IQ-NOCOMMIT CONTINUANCE OF TASK ORDER 1202SC26K2503 · 2026-01-01
$20.6M
Federal awards ≥ $25M in the last 90 days, matched via the SAM.gov parent registry
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows a net $217.5M sold by insiders over 180 days, 203 funds added last quarter. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector by SEC SIC code
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PRM financials

Revenue growth
+16.4%
XBRL, annual
Net margin
-31.6%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$757.1M
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
-44.9%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
$97.1M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
1.18x
long-term 2026-06-30 plus current 2021-12-31 (54 months older than the period end); equity 2026-06-30
Cash flow to debt
0.11x
TTM operating cash flow over long-term 2026-06-30 plus current 2021-12-31 (54 months older than the period end)
Return on equity
-30.9%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
-11.9%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
n/a
pre-tax loss, no effective tax rate to apply
Return on capital employed
-14.4%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Enterprise value
$5.7B
market value at close 2026-10-26 on 2026-07-24 shares, plus long-term 2026-06-30 plus current 2021-12-31 (54 months older than the period end), minus cash 2026-06-30
FCF yield
+2.1%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-122024-122023-122022-12
Revenue$652.9M$561.0M$322.1M$360.5M
Gross profit$375.1M$317.1M$128.3M$128.7M
Operating income-$200.9M-$3.8M$94.5M$130.1M
Net income-$206.4M-$5.9M$67.5M$91.8M
EPS (diluted)-1.37-0.040.410.52
Operating cash flow$238.1M$188.4M$193.0K-$40.2M
Cash$325.9M$198.5M$47.3M$126.8M
Long-term debt$669.1M$667.8M$666.5M$665.3M
Buybacks$40.4M$14.4M$64.1M$49.3M
SEC XBRL, fiscal years, as known on 2026-10-28

PRM Stock Sonar score 6/7 axes

Find similar shapesCompare

PRM ranks highest on institutional and government (76th percentile) and profitability (72nd), and lowest on insider conviction (1st), among Pharma & Biotech peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
72
Inputs
  • Return on equity-30.9% · 66 pct, sector of 545
  • Return on assets-11.9% · 73 pct, sector of 691
  • Return on invested capitalpre-tax loss, no effective tax rate to apply
  • Return on capital employed-14.4% · 77 pct, sector of 576
Financial health
46
Inputs
  • Debt to equity1.18x · 16 pct, sector of 352
  • Cash flow to debt0.11x · 77 pct, sector of 371
Growth
63
Inputs
  • Revenue growth, YoY+16.4% · 63 pct, sector of 505
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
1
Inputs
  • Net Form 4 buying (codes P and S), 180d-$217.5M · 1 pct, sector of 428
  • Insider buyers, 180d0 · 0 pct, sector of 437
Institutional and government
76
Inputs
  • Funds adding, latest quarter203 · 90 pct, sector of 698
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180d$108.0M · 74 pct, universe of 69
  • Lobbying spend, 4 quarters$560K · 64 pct, sector of 133
Risk and compliance
44
Inputs
  • Short interest, % of float+4.4% · 61 pct, sector of 813
  • Recalls per $1B revenue, 3ynot measured for this sector, almost no peer has an event
  • EPA cases per $1B revenue, 5ynot measured for this sector, almost no peer has an event
  • New text in Risk Factors, latest 10-K+16.0% · 26 pct, sector of 511
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

PRM filings, in plain words

Are Perimeter Solutions insiders buying or selling PRM?

In the 180 days to 2026-10-28, Perimeter Solutions insiders were net sellers, a net $217.5M across purchases and sales reported on Form 4, by 4 sellers.

Read the full summary

In the 180 days to 2026-10-28, Perimeter Solutions insiders were net sellers of PRM, a net $217.5M across purchases and sales reported on Form 4 by 4 sellers. Most of that figure, $195.6M, came from a holder of 10% or more rather than an officer or director. None of the 19 insider sales was flagged as made under a Rule 10b5-1 plan. The latest 5% ownership filing is a 13D by William N. Thorndike, Jr., filed 2026-03-10, for 5.7% of the class. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.

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