Key facts
- PRM - Perimeter Solutions, Inc. has 21 insiders with reported activity on this page.
- Net insider value flow over the last year: -$52,134,795.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 21 Insiders of Perimeter Solutions, Inc.
- Symbol
- PRM on NYSE
- Location
- Clayton, MO
Change
- Buy value: $3,559,308; sell value: $55,694,102.
- Net share flow: -1,932,035.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$52,134,795.
Buys
$3,559,308
Shares: 254,600
Insiders: 1
Sells
$55,694,103
Shares: 2,186,635
Insiders: 7
Net
-$52,134,795
Shares: -1,932,035
Insiders: -6
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 1,329,535 | $0 | $37,250,045 | -$37,250,045 |
| 3-6 | 0 | 237,500 | $0 | $6,757,500 | -$6,757,500 |
| 6-9 | 0 | 365,000 | $0 | $8,127,250 | -$8,127,250 |
| 9-12 | 254,600 | 254,600 | $3,559,308 | $3,559,308 | $0 |
Perimeter Solutions, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| WindAcre Partnership Master Fund, LP | 10%+ Owner | $305,527,308 | $0 | 0% | Filing P/S | 27 Jun 2025 |
| William N. Thorndike Jr. | Director | $197,856,506 | -$15,403,421 | -7.2% | Filing P/S | 09 Mar 2026 |
| Haitham Khouri | Chief Executive Officer, Director | $58,469,241 | -$7,284,108 | -11% | Filing P/S | 20 May 2026 |
| Vivek Raj | Director | $18,609,441 | -$561,250 | -2.9% | Mixed | 03 Mar 2026 |
| W. Nicholas Howley | Director | $14,803,404 | Median | 23 Apr 2026 | ||
| Tracy Britt Cool | Director | $6,853,488 | Mixed | 03 Mar 2026 | ||
| Shannon Horn | Business Director | $4,657,513 | Mixed | 30 Mar 2022 | ||
| Edward D. Goldberg | Vice Chairman, Director | $2,856,079 | Mixed | 20 Feb 2025 | ||
| Barry Lederman | Chief Financial Officer | $2,052,547 | Mixed | 30 Mar 2022 | ||
| Ernest C. Kremling II | Chief Operating Officer | $1,572,704 | Mixed | 30 Mar 2022 | ||
| Noriko Yokozuka | General Counsel | $1,341,145 | -$3,910,500 | -74% | Filing P/S | 26 Feb 2026 |
| Kevin M. Stein | Director | $1,201,750 | Mixed | 08 Nov 2021 | ||
| Stephen Cornwall | Chief Commercial Officer | $439,809 | Mixed | 30 Mar 2022 | ||
| Kyle Sable | Chief Financial Officer | $0 | -$11,721,496 | -100% | Mixed | 13 May 2026 |
| Jeffrey Emery | President - Global Fire Safety | $0 | -$13,254,020 | -100% | Mixed | 13 May 2026 |
| Robert S. Henderson | Director | Mixed | 26 Feb 2026 | |||
| Bernt G. Iversen II | Director | Mixed | 26 Feb 2026 | |||
| Sean P. Hennessy | Director | Mixed | 26 Feb 2026 | |||
| Grant Bowman | President, Specialty Products | Mixed | 26 Feb 2026 | |||
| III Jorge L. Valladares | Director | Mixed | 26 Feb 2026 | |||
| Charles W. Kropp | Chief Financial Officer | Mixed | 06 May 2022 |
Top shareholders of Perimeter Solutions, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
|
Company |
6.7%
from 13D/G
|
9,039,110
|
$220,735,063 | — | 31 Mar 2026 | |
| William N. Thorndike Jr. |
13D/G
3/4/5
|
Director |
5.7%
|
9,309,341
|
$254,703,570 | $0 | 03 Mar 2026 | |
| Matrix Capital Management Company, LP |
13D/G
|
— |
4.5%
|
6,554,000
|
$66,850,800 | $0 | 31 Dec 2024 | |
| WindAcre Partnership Master Fund, LP |
3/4/5
|
10%+ Owner |
13%
|
21,854,600
|
$305,527,308 | $0 | 27 Jun 2025 | |
| W. Nicholas Howley |
3/4/5
|
Director |
0.37%
|
606,200
|
$14,803,404 | — | 23 Apr 2026 | |
| WINDACRE PARTNERSHIP LLC |
13F
|
Company |
13%
|
21,854,600
|
$533,689,332 | — | 31 Mar 2026 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
7.7%
|
12,513,159
|
$305,572,214 | — | 31 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
6.6%
|
10,829,380
|
$264,453,459 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
3.8%
|
6,175,487
|
$150,805,393 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.9%
|
4,763,465
|
$116,286,076 | — | 31 Mar 2026 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
2.5%
|
4,007,536
|
$97,863,083 | — | 31 Mar 2026 | |
| DF DENT & CO INC |
13F
|
Company |
2.4%
|
3,932,371
|
$96,028,504 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
3,796,605
|
$92,728,600 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
2%
|
3,244,068
|
$79,220,141 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.7%
|
2,806,634
|
$59,725,172 | — | 31 Mar 2026 | |
| BALANCE CAPITAL PARTNERS L.P. |
13F
|
Company |
1.7%
|
2,735,521
|
$66,801,423 | — | 31 Mar 2026 | |
| BROWN BROTHERS HARRIMAN & CO |
13F
|
Company |
1.6%
|
2,608,289
|
$63,694,417 | — | 31 Mar 2026 | |
| Senator Investment Group LP |
13F
|
Company |
1.5%
|
2,370,000
|
$57,875,400 | — | 31 Mar 2026 | |
| Corient Private Wealth LLC |
13F
|
Company |
1.2%
|
1,900,978
|
$46,421,885 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
1,876,776
|
$45,830,896 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
1.1%
|
1,738,095
|
$42,444,279 | — | 31 Mar 2026 | |
| EQUITABLE TRUST CO |
13F
|
Company |
1%
|
1,653,187
|
$40,370,827 | — | 31 Mar 2026 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
|
Company |
1%
|
1,634,800
|
$39,921,841 | — | 31 Mar 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
1%
|
1,626,724
|
$39,724,600 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.89%
|
1,447,461
|
$35,346,998 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.86%
|
1,408,132
|
$34,386,584 | — | 31 Mar 2026 | |
| East Coast Asset Management, LLC. |
13F
|
Company |
0.83%
|
1,357,583
|
$33,152,177 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.7%
|
1,149,405
|
$28,068,470 | — | 31 Mar 2026 | |
| Focus Partners Wealth |
13F
|
Company |
0.66%
|
1,071,227
|
$26,195,262 | — | 31 Mar 2026 | |
| BESSEMER GROUP INC |
13F
|
Company |
0.65%
|
1,064,925
|
$26,006,000 | — | 31 Mar 2026 | |
| Invesco Ltd. |
13F
|
Company |
0.64%
|
1,051,624
|
$25,680,657 | — | 31 Mar 2026 | |
| T. Rowe Price Investment Management, Inc. |
13F
|
Company |
0.62%
|
1,014,202
|
$24,767,000 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.6%
|
980,700
|
$23,948,694 | — | 31 Mar 2026 | |
| Pennant Investors, LP |
13F
|
Company |
0.57%
|
938,250
|
$22,912,065 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.56%
|
911,891
|
$22,268,378 | — | 31 Mar 2026 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.51%
|
839,657
|
$18,223,165 | — | 31 Mar 2026 | |
| Skye Global Management LP |
13F
|
Company |
0.4%
|
652,000
|
$15,921,840 | — | 31 Mar 2026 | |
| Catawba River Capital |
13F
|
Company |
0.37%
|
599,371
|
$15,511,721 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.36%
|
591,257
|
$14,438,496 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.35%
|
577,855
|
$14,111,219 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.35%
|
574,169
|
$14,021,207 | — | 31 Mar 2026 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
0.34%
|
550,276
|
$13,437,740 | — | 31 Mar 2026 | |
| WEITZ INVESTMENT MANAGEMENT, INC. |
13F
|
Company |
0.31%
|
509,400
|
$12,439,548 | — | 31 Mar 2026 | |
| NORDEA INVESTMENT MANAGEMENT AB |
13F
|
Company |
0.28%
|
464,037
|
$11,090,485 | — | 31 Mar 2026 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.28%
|
455,393
|
$11,120,685 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.27%
|
434,635
|
$10,613,795 | — | 31 Mar 2026 | |
| IEQ CAPITAL, LLC |
13F
|
Company |
0.25%
|
412,139
|
$10,064,434 | — | 31 Mar 2026 | |
| Voleon Capital Management LP |
13F
|
Company |
0.25%
|
411,013
|
$10,036,937 | — | 31 Mar 2026 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.23%
|
376,401
|
$9,191,712 | — | 31 Mar 2026 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.22%
|
356,866
|
$8,714,668 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for Perimeter Solutions, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Haitham Khouri | PRM | Common Stock | Sale | -5.9% | $3,665,168 | $31.19 | -117,511 | 1,874,615 | 22 May 2026 | Direct |
| Haitham Khouri | PRM | Common Stock | Sale | -4.4% | $2,926,913 | $31.91 | -91,724 | 1,992,126 | 21 May 2026 | Direct |
| Haitham Khouri | PRM | Common Stock | Sale | -0.96% | $692,027 | $34.09 | -20,300 | 2,083,850 | 20 May 2026 | Direct |
| Kyle Sable | PRM | Common Stock | Sale | -100% | $1,639,067 | $33.09 | -49,540 | 0 | 13 May 2026 | Direct |
| Kyle Sable | PRM | Common Stock | Options Exercise | 49,540 | 49,540 | 13 May 2026 | Direct | |||
| Kyle Sable | PRM | Stock Option (right to buy) | Options Exercise | -41.4% | -49,540 | 70,000 | 13 May 2026 | Direct | ||
| Jeffrey Emery | PRM | Common Stock | Sale | -100% | $1,790,813 | $33.45 | -53,537 | 0 | 13 May 2026 | Direct |
| Jeffrey Emery | PRM | Common Stock | Options Exercise | 53,537 | 53,537 | 13 May 2026 | Direct | |||
| Jeffrey Emery | PRM | Stock Option (right to buy) | Options Exercise | -15.1% | -53,537 | 300,000 | 13 May 2026 | Direct | ||
| Kyle Sable | PRM | Common Stock | Sale | -100% | $952,500 | $31.75 | -30,000 | 0 | 12 May 2026 | Direct |
| Kyle Sable | PRM | Common Stock | Options Exercise | 30,000 | 30,000 | 12 May 2026 | Direct | |||
| Kyle Sable | PRM | Stock Option (right to buy) | Options Exercise | -20.1% | -30,000 | 119,540 | 12 May 2026 | Direct | ||
| Jeffrey Emery | PRM | Common Stock | Sale | -100% | $3,291,207 | $32.92 | -99,963 | 0 | 11 May 2026 | Direct |
| Jeffrey Emery | PRM | Common Stock | Options Exercise | 99,963 | 99,963 | 11 May 2026 | Direct | |||
| Jeffrey Emery | PRM | Stock Option (right to buy) | Options Exercise | -22% | -99,963 | 353,537 | 11 May 2026 | Direct | ||
| Kyle Sable | PRM | Common Stock | Sale | -100% | $672,929 | $32.89 | -20,460 | 0 | 11 May 2026 | Direct |
| Kyle Sable | PRM | Common Stock | Options Exercise | 20,460 | 20,460 | 11 May 2026 | Direct | |||
| Kyle Sable | PRM | Stock Option (right to buy) | Options Exercise | -12% | -20,460 | 149,540 | 11 May 2026 | Direct | ||
| Jeffrey Emery | PRM | Common Stock | Sale | -100% | $1,488,000 | $32.00 | -46,500 | 0 | 08 May 2026 | Direct |
| Jeffrey Emery | PRM | Common Stock | Options Exercise | 46,500 | 46,500 | 08 May 2026 | Direct | |||
| Jeffrey Emery | PRM | Stock Option (right to buy) | Options Exercise | -9.3% | -46,500 | 453,500 | 08 May 2026 | Direct | ||
| Kyle Sable | PRM | Common Stock | Sale | -100% | $4,728,000 | $31.52 | -150,000 | 0 | 08 May 2026 | Direct |
| Kyle Sable | PRM | Common Stock | Options Exercise | 150,000 | 150,000 | 08 May 2026 | Direct | |||
| Kyle Sable | PRM | Stock Option (right to buy) | Options Exercise | -100% | -150,000 | 0 | 08 May 2026 | Direct | ||
| W. Nicholas Howley | PRM | Common Stock | Gift | -85.2% | -3,480,640 | 606,200 | 23 Apr 2026 | Direct | ||
| W. Nicholas Howley | PRM | Common Stock | Gift | -19.7% | -1,000,000 | 4,086,840 | 01 Apr 2026 | Direct | ||
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.16% | $2,318,000 | $23.18 | -100,000 | 8,535,656 | 11 Mar 2026 | Direct |
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.14% | $2,363,000 | $23.63 | -100,000 | 8,635,656 | 10 Mar 2026 | Direct |
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.41% | $2,920,921 | $23.37 | -125,000 | 8,735,656 | 09 Mar 2026 | Direct |
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.12% | $2,363,000 | $23.63 | -100,000 | 8,860,656 | 06 Mar 2026 | Direct |
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.1% | $2,406,000 | $24.06 | -100,000 | 8,960,656 | 05 Mar 2026 | Direct |
| William N. Thorndike Jr. | PRM | Common Stock | Sale | -1.36% | $3,032,500 | $24.26 | -125,000 | 9,060,656 | 04 Mar 2026 | Direct |
| Tracy Britt Cool | PRM | Common Stock | Award | 35.7% | 65,843 | 250,493 | 03 Mar 2026 | Direct | ||
| William N. Thorndike Jr. | PRM | Common Stock | Award | 154.9% | 5,582,492 | 9,185,656 | 03 Mar 2026 | Direct | ||
| Vivek Raj | PRM | Common Stock | Award | 456.7% | 555,859 | 677,560 | 03 Mar 2026 | Direct | ||
| W. Nicholas Howley | PRM | Common Stock | Gift | -17.8% | -1,101,852 | 5,086,840 | 03 Mar 2026 | Direct | ||
| W. Nicholas Howley | PRM | Common Stock | Award | 920.9% | 5,582,492 | 6,188,692 | 03 Mar 2026 | Direct | ||
| Haitham Khouri | PRM | Common Stock | Award | 317.6% | 1,600,317 | 2,104,150 | 03 Mar 2026 | Direct | ||
| Bernt G. Iversen II | PRM | Stock Option (right to buy) | Award | 35,682 | 23,333 | 26 Feb 2026 | Direct | |||
| Grant Bowman | PRM | Stock Option (right to buy) | Award | 232.3% | 139,820 | 200,000 | 26 Feb 2026 | Direct | ||
| Haitham Khouri | PRM | Stock Option (right to buy) | Award | 96.2% | 588,489 | 1,200,000 | 26 Feb 2026 | Direct | ||
| Jeffrey Emery | PRM | Stock Option (right to buy) | Award | 66.7% | 200,000 | 500,000 | 26 Feb 2026 | Direct | ||
| Kyle Sable | PRM | Stock Option (right to buy) | Award | 130.8% | 170,000 | 300,000 | 26 Feb 2026 | Direct | ||
| Noriko Yokozuka | PRM | Stock Option (right to buy) | Award | 50% | 120,000 | 360,000 | 26 Feb 2026 | Direct | ||
| Sean P. Hennessy | PRM | Stock Option (right to buy) | Award | 35,944 | 28,000 | 26 Feb 2026 | Direct | |||
| Robert S. Henderson | PRM | Stock Option (right to buy) | Award | 38,599 | 28,000 | 26 Feb 2026 | Direct | |||
| Tracy Britt Cool | PRM | Stock Option (right to buy) | Award | 28,944 | 28,000 | 26 Feb 2026 | Direct | |||
| Vivek Raj | PRM | Stock Option (right to buy) | Award | 28,944 | 28,000 | 26 Feb 2026 | Direct | |||
| III Jorge L. Valladares | PRM | Stock Option (right to buy) | Award | 12,388 | 6,194 | 26 Feb 2026 | Direct | |||
| Noriko Yokozuka | PRM | Common Stock | Sale | -74.5% | $3,910,500 | $28.44 | -137,500 | 47,157 | 12 Dec 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.