Perimeter Solutions Inc. (PRM) Insider Trading

Last 12 months

Insiders sold $44M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Director William N Thorndike Jr sold $7.8M on Mar 6 outside a plan. The last open-market buy by an executive or director was in Jun 2024.

Net open-market

−$44M

0 buys · 9 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 5

executives and directors

Last open-market buy

Jun 2024

Jun 11, 2024

Get an email when PRM's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Jun 26 – 30	Snehal Amin Large holder	SoldNo plan 7 parts	5,705,979	$34.28 average	$196M	26%	Form 4
Jun 26 – 30	Windacre Partnership LLC Large holder	SoldNo plan 7 parts	5,705,979	$34.28 average	$196M	26%	Form 4
May 20 – 22	Haitham Khouri Chief Executive Officer	SoldNo plan 3 parts	229,535	$31.73 average	$7.28M	11%	Form 4
May 13	Kyle Sable Chief Financial Officer	SoldNo plan 2 parts	49,540	$33.09 average	$1.64M	100%	Form 4
May 13	Jeffrey Emery President - Global Fire Safety	SoldNo plan	53,537	$33.45	$1.79M	100%	Form 4
May 8 – 12	Kyle Sable Chief Financial Officer	SoldNo plan 3 parts	200,460	$31.69 average	$6.35M	100%	Form 4
May 8 – 11	Jeffrey Emery President - Global Fire Safety	SoldNo plan 3 parts	146,463	$32.63 average	$4.78M	100%	Form 4
Mar 9 – 11	William N Thorndike Jr Director	SoldNo plan 4 parts	325,000	$23.39 average	$7.6M	3.7%	Form 4
Mar 4 – 6	William N Thorndike Jr Director	SoldNo plan 3 parts	325,000	$24.00 average	$7.8M	3.5%	Form 4
Dec 12, 2025	Kyle Sable Chief Financial Officer	SoldNo plan	100,000	$28.47	$2.85M	100%	Form 4
Dec 12, 2025	Noriko Yokozuka General Counsel	SoldNo plan	137,500	$28.44	$3.91M	74%	Form 4
Sep 11, 2025	Vivek Raj Director	SoldNo plan	25,000	$22.45	$561k	17%	Form 4
Sep 5, 2025	Kyle Sable Chief Financial Officer	SoldNo plan	40,000	$22.05	$882k	100%	Form 4
Sep 4, 2025	Jeffrey Emery President - Global Fire Safety	SoldNo plan	300,000	$22.28	$6.68M	100%	Form 4
Jun 27, 2025	Wapgp LLC Large holder	Bought	254,600	$13.98	$3.56M	1.2%	Form 4
May 21, 2025	Vivek Raj Director	SoldNo plan	32,000	$11.70	$374k	32%	Form 4
May 16, 2025 – May 20, 2025	Vivek Raj Director	SoldNo plan 3 parts	268,810	$11.78 average	$3.17M	73%	Form 4
May 13, 2025 – May 15, 2025	Vivek Raj Director	SoldNo plan 2 parts	102,284	$11.93 average	$1.22M	22%	Form 4
Mar 14, 2025	Vivek Raj Director	SoldNo plan	250,000	$9.17	$2.29M	35%	Form 4
Nov 22, 2024	Tracy Britt Cool Director	SoldNo plan	50,000	$12.81	$641k	22%	Form 4
Nov 13, 2024 – Nov 15, 2024	Haitham Khouri Chief Executive Officer	SoldNo plan 3 parts	260,156	$12.13 average	$3.16M	15%	Form 4

Jun 26 – 30No plan
Snehal Amin
Large holder · sold 5,705,979 at avg $34.28
$196M
26% of stake
Jun 26 – 30No plan
Windacre Partnership LLC
Large holder · sold 5,705,979 at avg $34.28
$196M
26% of stake
May 20 – 22No plan
Haitham Khouri
Chief Executive Officer · sold 229,535 at avg $31.73
$7.28M
11% of stake
May 13No plan
Kyle Sable
Chief Financial Officer · sold 49,540 at avg $33.09
$1.64M
100% of stake
May 13No plan
Jeffrey Emery
President - Global Fire Safety · sold 53,537 at $33.45
$1.79M
100% of stake
May 8 – 12No plan
Kyle Sable
Chief Financial Officer · sold 200,460 at avg $31.69
$6.35M
100% of stake
May 8 – 11No plan
Jeffrey Emery
President - Global Fire Safety · sold 146,463 at avg $32.63
$4.78M
100% of stake
Mar 9 – 11No plan
William N Thorndike Jr
Director · sold 325,000 at avg $23.39
$7.6M
3.7% of stake
Mar 4 – 6No plan
William N Thorndike Jr
Director · sold 325,000 at avg $24.00
$7.8M
3.5% of stake
Dec 12, 2025No plan
Kyle Sable
Chief Financial Officer · sold 100,000 at $28.47
$2.85M
100% of stake
Dec 12, 2025No plan
Noriko Yokozuka
General Counsel · sold 137,500 at $28.44
$3.91M
74% of stake
Sep 11, 2025No plan
Vivek Raj
Director · sold 25,000 at $22.45
$561k
17% of stake
Sep 5, 2025No plan
Kyle Sable
Chief Financial Officer · sold 40,000 at $22.05
$882k
100% of stake
Sep 4, 2025No plan
Jeffrey Emery
President - Global Fire Safety · sold 300,000 at $22.28
$6.68M
100% of stake
Jun 27, 2025
Wapgp LLC
Large holder · bought 254,600 at $13.98
$3.56M
1.2% of stake
May 21, 2025No plan
Vivek Raj
Director · sold 32,000 at $11.70
$374k
32% of stake
May 16, 2025 – May 20, 2025No plan
Vivek Raj
Director · sold 268,810 at avg $11.78
$3.17M
73% of stake
May 13, 2025 – May 15, 2025No plan
Vivek Raj
Director · sold 102,284 at avg $11.93
$1.22M
22% of stake
Mar 14, 2025No plan
Vivek Raj
Director · sold 250,000 at $9.17
$2.29M
35% of stake
Nov 22, 2024No plan
Tracy Britt Cool
Director · sold 50,000 at $12.81
$641k
22% of stake
Nov 13, 2024 – Nov 15, 2024No plan
Haitham Khouri
Chief Executive Officer · sold 260,156 at avg $12.13
$3.16M
15% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch PRM, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in PRM's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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