Perimeter Solutions, Inc. (PRM) · Insider trading
What Perimeter Solutions's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$239.62M
6 insiders, 0% under a plan
Net, 12 months
−$239.62M
bought less sold
Latest filing
2026-07-13
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Windacre Partnership LLC10% owner | $3.56M | $195.61M | 8 | 2026-06-30 | 16,148,621 |
| Thorndike William N JrDirector | – | $15.40M | 7 | 2026-03-11 | 8,535,656 |
| Emery JeffreyPresident - Global Fire Safety | – | $13.25M | 5 | 2026-05-13 | 0 |
| Sable KyleChief Financial Officer | – | $11.72M | 7 | 2026-05-13 | 3,277 |
| Khouri HaithamDirector, Chief Executive Officer | – | $10.44M | 6 | 2026-05-22 | 1,874,615 |
| Raj VivekDirector | – | $7.61M | 8 | 2025-09-11 | 121,701 |
| Yokozuka NorikoGeneral Counsel | – | $3.91M | 1 | 2025-12-12 | 47,157 |
| Cool Tracy BrittDirector | – | $640,500 | 1 | 2024-11-22 | 173,449 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 1,875,000 | 33.90 | $63.56M | 16,148,621 | Form 4/A |
| 2026-06-29 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 437,500 | 33.00 | $14.44M | 18,023,621 | Form 4/A |
| 2026-06-26 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 378,600 | 36.22 | $13.71M | 21,476,000 | Form 4/A |
| 2026-06-26 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 150,000 | 34.98 | $5.25M | 21,326,000 | Form 4/A |
| 2026-06-26 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 2,296,400 | 34.40 | $79.00M | 19,029,600 | Form 4/A |
| 2026-06-26 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 20,000 | 36.25 | $725,000 | 19,009,600 | Form 4/A |
| 2026-06-26 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Sale | 548,479 | 34.51 | $18.93M | 18,461,121 | Form 4/A |
| 2026-05-22 | Khouri HaithamDirector, Chief Executive Officer | Sale | 117,511 | 31.19 | $3.67M | 1,874,615 | Form 4 |
| 2026-05-21 | Khouri HaithamDirector, Chief Executive Officer | Sale | 91,724 | 31.91 | $2.93M | 1,992,126 | Form 4 |
| 2026-05-20 | Khouri HaithamDirector, Chief Executive Officer | Sale | 20,300 | 34.09 | $692,027 | 2,083,850 | Form 4 |
| 2026-05-13 | Emery JeffreyPresident - Global Fire Safety | Sale | 53,537 | 33.45 | $1.79M | 0 | Form 4 |
| 2026-05-13 | Sable KyleChief Financial Officer | Sale | 46,263 | 33.05 | $1.53M | 3,277 | Form 4 |
| 2026-05-13 | Sable KyleChief Financial Officer | Sale | 3,277 | 33.59 | $110,074 | 0 | Form 4 |
| 2026-05-12 | Sable KyleChief Financial Officer | Sale | 30,000 | 31.75 | $952,500 | 0 | Form 4 |
| 2026-05-11 | Emery JeffreyPresident - Global Fire Safety | Sale | 97,855 | 32.90 | $3.22M | 2,108 | Form 4 |
| 2026-05-11 | Emery JeffreyPresident - Global Fire Safety | Sale | 2,108 | 34.05 | $71,777 | 0 | Form 4 |
| 2026-05-11 | Sable KyleChief Financial Officer | Sale | 20,460 | 32.89 | $672,929 | 0 | Form 4 |
| 2026-05-08 | Emery JeffreyPresident - Global Fire Safety | Sale | 46,500 | 32.00 | $1.49M | 0 | Form 4 |
| 2026-05-08 | Sable KyleChief Financial Officer | Sale | 150,000 | 31.52 | $4.73M | 0 | Form 4 |
| 2026-03-11 | Thorndike William N JrDirector | Sale | 100,000 | 23.18 | $2.32M | 8,535,656 | Form 4 |
| 2026-03-10 | Thorndike William N JrDirector | Sale | 100,000 | 23.63 | $2.36M | 8,635,656 | Form 4 |
| 2026-03-09 | Thorndike William N JrDirector | Sale | 90,043 | 23.18 | $2.09M | 8,770,613 | Form 4 |
| 2026-03-09 | Thorndike William N JrDirector | Sale | 34,957 | 23.85 | $833,724 | 8,735,656 | Form 4 |
| 2026-03-06 | Thorndike William N JrDirector | Sale | 100,000 | 23.63 | $2.36M | 8,860,656 | Form 4 |
| 2026-03-05 | Thorndike William N JrDirector | Sale | 100,000 | 24.06 | $2.41M | 8,960,656 | Form 4 |
| 2026-03-04 | Thorndike William N JrDirector | Sale | 125,000 | 24.26 | $3.03M | 9,060,656 | Form 4 |
| 2025-12-12 | Yokozuka NorikoGeneral Counsel | Sale | 137,500 | 28.44 | $3.91M | 47,157 | Form 4 |
| 2025-12-12 | Sable KyleChief Financial Officer | Sale | 100,000 | 28.47 | $2.85M | 0 | Form 4 |
| 2025-09-11 | Raj VivekDirector | Sale | 25,000 | 22.45 | $561,250 | 121,701 | Form 4 |
| 2025-09-05 | Sable KyleChief Financial Officer | Sale | 40,000 | 22.05 | $882,000 | 0 | Form 4 |
| 2025-09-04 | Emery JeffreyPresident - Global Fire Safety | Sale | 300,000 | 22.28 | $6.68M | 0 | Form 4 |
| 2025-06-27 | Windacre Partnership LLC10% ownerwith Wapgp LLC, Amin Snehal, WindAcre Partnership Master Fund, LP, WindAcre General Partner LP | Buy | 254,600 | 13.98 | $3.56M | 21,854,600 | Form 4 |
| 2025-05-21 | Raj VivekDirector | Sale | 32,000 | 11.70 | $374,400 | 68,132 | Form 4 |
| 2025-05-20 | Raj VivekDirector | Sale | 68,810 | 11.84 | $814,710 | 100,132 | Form 4 |
| 2025-05-19 | Raj VivekDirector | Sale | 100,000 | 11.78 | $1.18M | 168,942 | Form 4 |
| 2025-05-16 | Raj VivekDirector | Sale | 100,000 | 11.74 | $1.17M | 268,942 | Form 4 |
| 2025-05-15 | Raj VivekDirector | Sale | 100,000 | 11.92 | $1.19M | 368,942 | Form 4 |
| 2025-05-13 | Raj VivekDirector | Sale | 2,284 | 12.22 | $27,910 | 468,942 | Form 4 |
| 2025-03-14 | Raj VivekDirector | Sale | 250,000 | 9.17 | $2.29M | 471,226 | Form 4 |
| 2024-11-22 | Cool Tracy BrittDirector | Sale | 50,000 | 12.81 | $640,500 | 173,449 | Form 4 |
3 more
| 2024-11-15 | Khouri HaithamDirector, Chief Executive Officer | Sale | 80,156 | 12.16 | $974,697 | 249,833 | Form 4 |
| 2024-11-14 | Khouri HaithamDirector, Chief Executive Officer | Sale | 100,000 | 12.17 | $1.22M | 329,989 | Form 4 |
| 2024-11-13 | Khouri HaithamDirector, Chief Executive Officer | Sale | 80,000 | 12.05 | $964,000 | 429,989 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
18 × option exercise5 × gift5 × grant or award5 × other4 × returned to the company
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-05-13 | Emery JeffreyPresident - Global Fire Safety | Option exercise M | +53,537 | 8.36 | 53,537 | Form 4 |
| 2026-05-13 | Sable KyleChief Financial Officer | Option exercise M | +49,540 | 8.36 | 49,540 | Form 4 |
| 2026-05-12 | Sable KyleChief Financial Officer | Option exercise M | +30,000 | 8.36 | 30,000 | Form 4 |
| 2026-05-11 | Emery JeffreyPresident - Global Fire Safety | Option exercise M | +99,963 | 8.36 | 99,963 | Form 4 |
| 2026-05-11 | Sable KyleChief Financial Officer | Option exercise M | +20,460 | 8.36 | 20,460 | Form 4 |
| 2026-05-08 | Emery JeffreyPresident - Global Fire Safety | Option exercise M | +46,500 | 8.36 | 46,500 | Form 4 |
| 2026-05-08 | Sable KyleChief Financial Officer | Option exercise M | +20,000 | 3.89 | 20,000 | Form 4 |
| 2026-05-08 | Sable KyleChief Financial Officer | Option exercise M | +130,000 | 8.36 | 150,000 | Form 4 |
| 2026-04-23 | Howley W NicholasDirector | Gift G | −3,480,640 | – | 606,200 | Form 4 |
| 2026-04-01 | Howley W NicholasDirector | Gift G | −1,000,000 | – | 4,086,840 | Form 4 |
| 2026-03-03 | Howley W NicholasDirector | Grant or award A | +5,582,492 | – | 6,188,692 | Form 4 |
| 2026-03-03 | Howley W NicholasDirector | Gift G | −1,101,852 | – | 5,086,840 | Form 4 |
| 2026-03-03 | Thorndike William N JrDirector | Grant or award A | +5,582,492 | – | 9,185,656 | Form 4 |
| 2026-03-03 | Cool Tracy BrittDirector | Grant or award A | +65,843 | – | 250,493 | Form 4 |
| 2026-03-03 | Raj VivekDirector | Grant or award A | +555,859 | – | 677,560 | Form 4 |
| 2026-03-03 | Khouri HaithamDirector, Chief Executive Officer | Grant or award A | +1,600,317 | – | 2,104,150 | Form 4 |
| 2025-12-12 | Yokozuka NorikoGeneral Counsel | Option exercise M | +17,500 | 10.00 | 64,657 | Form 4 |
| 2025-12-12 | Yokozuka NorikoGeneral Counsel | Option exercise M | +120,000 | 10.00 | 184,657 | Form 4 |
| 2025-12-12 | Sable KyleChief Financial Officer | Option exercise M | +100,000 | 8.36 | 100,000 | Form 4 |
| 2025-12-09 | Thorndike William N JrDirector | Gift G | −673,685 | – | 3,603,164 | Form 4 |
| 2025-11-24 | Howley W NicholasDirector | Gift G | −746,767 | – | 606,200 | Form 4 |
| 2025-09-05 | Sable KyleChief Financial Officer | Option exercise M | +40,000 | 3.89 | 40,000 | Form 4 |
| 2025-09-04 | Emery JeffreyPresident - Global Fire Safety | Option exercise M | +300,000 | 8.36 | 300,000 | Form 4 |
| 2025-06-20 | Thorndike William N JrDirector | Other J | +746,767 | – | 4,276,849 | Form 4 |
| 2025-06-20 | Khouri HaithamDirector, Chief Executive Officer | Other J | +254,000 | – | 503,833 | Form 4 |
| 2025-06-20 | Raj VivekDirector | Other J | +78,569 | – | 146,701 | Form 4 |
| 2025-06-20 | Howley W NicholasDirector | Other J | +746,767 | – | 1,352,967 | Form 4 |
| 2025-06-20 | Cool Tracy BrittDirector | Other J | +11,201 | – | 184,650 | Form 4 |
| 2024-11-12 | Raj VivekDirector | Option exercise M | +25,000 | 12.00 | 742,913 | Form 4 |
| 2024-11-12 | Raj VivekDirector | Returned to the company D | −21,687 | 13.83 | 721,226 | Form 4 |
| 2024-11-06 | Thorndike William N JrDirector | Option exercise M | +125,000 | 12.00 | 3,530,082 | Form 4 |
| 2024-11-06 | Khouri HaithamDirector, Chief Executive Officer | Option exercise M | +92,500 | 12.00 | 342,333 | Form 4 |
| 2024-11-06 | Khouri HaithamDirector, Chief Executive Officer | Returned to the company D | −82,344 | 13.48 | 259,989 | Form 4 |
| 2024-10-29 | Iversen Bernt G IIDirector | Option exercise M | +31,250 | 12.00 | 156,250 | Form 4 |
| 2024-10-29 | Iversen Bernt G IIDirector | Returned to the company D | −29,389 | 12.76 | 126,861 | Form 4 |
| 2024-10-21 | Howley W NicholasDirector | Option exercise M | +125,000 | 12.00 | 720,239 | Form 4 |
| 2024-10-21 | Howley W NicholasDirector | Returned to the company D | −114,039 | 13.15 | 606,200 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.