PRM · Stock research · Public disclosure research
Perimeter Solutions, Inc.
Data as of Jun 30, 2026. Collected disclosures, not exhaustive history.
30-day and 12-month windows end Oct 15, 2026 and use transaction dates, not disclosure dates. The data-as-of date above reflects the latest collected disclosure and may be older than the window end.
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 1,875,000 | $33.90 | $63,562,500.00 | 16,148,621 | Jun 30, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 437,500 | $33.00 | $14,437,500.00 | 18,023,621 | Jun 29, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 378,600 | $36.22 | $13,712,892.00 | 21,476,000 | Jun 26, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 150,000 | $34.98 | $5,247,000.00 | 21,326,000 | Jun 26, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 2,296,400 | $34.40 | $78,996,160.00 | 19,029,600 | Jun 26, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 20,000 | $36.25 | $725,000.00 | 19,009,600 | Jun 26, 2026 | Jun 30, 2026SEC filing |
| WINDACRE PARTNERSHIP LLC10% Owner | Open-market saleNon-derivative security10b5-1 plan not indicated | 548,479 | $34.51 | $18,928,010.29 | 18,461,121 | Jun 26, 2026 | Jun 30, 2026SEC filing |
| Khouri HaithamChief Executive Officer, Director | Open-market saleNon-derivative security10b5-1 plan not indicated | 117,511 | $31.19 | $3,665,168.09 | 1,874,615 | May 22, 2026 | May 22, 2026SEC filing |
| Khouri HaithamChief Executive Officer, Director | Open-market saleNon-derivative security10b5-1 plan not indicated | 91,724 | $31.91 | $2,926,912.84 | 1,992,126 | May 21, 2026 | May 22, 2026SEC filing |
| Khouri HaithamChief Executive Officer, Director | Open-market saleNon-derivative security10b5-1 plan not indicated | 20,300 | $34.09 | $692,027.00 | 2,083,850 | May 20, 2026 | May 22, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Open-market saleNon-derivative security10b5-1 plan not indicated | 53,537 | $33.45 | $1,790,812.65 | 0 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Open-market saleNon-derivative security10b5-1 plan not indicated | 46,263 | $33.05 | $1,528,992.15 | 3,277 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Open-market saleNon-derivative security10b5-1 plan not indicated | 3,277 | $33.59 | $110,074.43 | 0 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Open-market saleNon-derivative security10b5-1 plan not indicated | 30,000 | $31.75 | $952,500.00 | 0 | May 12, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Open-market saleNon-derivative security10b5-1 plan not indicated | 97,855 | $32.90 | $3,219,429.50 | 2,108 | May 11, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Open-market saleNon-derivative security10b5-1 plan not indicated | 2,108 | $34.05 | $71,777.40 | 0 | May 11, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Open-market saleNon-derivative security10b5-1 plan not indicated | 20,460 | $32.89 | $672,929.40 | 0 | May 11, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Open-market saleNon-derivative security10b5-1 plan not indicated | 46,500 | $32.00 | $1,488,000.00 | 0 | May 8, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Open-market saleNon-derivative security10b5-1 plan not indicated | 150,000 | $31.52 | $4,728,000.00 | 0 | May 8, 2026 | May 12, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 100,000 | $23.18 | $2,318,000.00 | 8,535,656 | Mar 11, 2026 | Mar 11, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 100,000 | $23.63 | $2,363,000.00 | 8,635,656 | Mar 10, 2026 | Mar 11, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 90,043 | $23.18 | $2,087,196.74 | 8,770,613 | Mar 9, 2026 | Mar 11, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 34,957 | $23.85 | $833,724.45 | 8,735,656 | Mar 9, 2026 | Mar 11, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 100,000 | $23.63 | $2,363,000.00 | 8,860,656 | Mar 6, 2026 | Mar 6, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 100,000 | $24.06 | $2,406,000.00 | 8,960,656 | Mar 5, 2026 | Mar 6, 2026SEC filing |
| Thorndike William N JrDirector | Open-market saleNon-derivative security10b5-1 plan not indicated | 125,000 | $24.26 | $3,032,500.00 | 9,060,656 | Mar 4, 2026 | Mar 6, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseNon-derivative security10b5-1 plan not indicated | 53,537 | $8.36 | $447,569.32 | 53,537 | May 13, 2026 | May 15, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseDerivative security10b5-1 plan not indicated | 53,537 | — | — | 300,000 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseNon-derivative security10b5-1 plan not indicated | 49,540 | $8.36 | $414,154.40 | 49,540 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseDerivative security10b5-1 plan not indicated | 49,540 | — | — | 70,000 | May 13, 2026 | May 15, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseDerivative security10b5-1 plan not indicated | 30,000 | — | — | 119,540 | May 12, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseNon-derivative security10b5-1 plan not indicated | 30,000 | $8.36 | $250,800.00 | 30,000 | May 12, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseNon-derivative security10b5-1 plan not indicated | 99,963 | $8.36 | $835,690.68 | 99,963 | May 11, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseDerivative security10b5-1 plan not indicated | 99,963 | — | — | 353,537 | May 11, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseNon-derivative security10b5-1 plan not indicated | 20,460 | $8.36 | $171,045.60 | 20,460 | May 11, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseDerivative security10b5-1 plan not indicated | 20,460 | — | — | 149,540 | May 11, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseNon-derivative security10b5-1 plan not indicated | 46,500 | $8.36 | $388,740.00 | 46,500 | May 8, 2026 | May 12, 2026SEC filing |
| Emery JeffreyPresident - Global Fire Safety | Option exerciseDerivative security10b5-1 plan not indicated | 46,500 | — | — | 453,500 | May 8, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseNon-derivative security10b5-1 plan not indicated | 20,000 | $3.89 | $77,800.00 | 20,000 | May 8, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseNon-derivative security10b5-1 plan not indicated | 130,000 | $8.36 | $1,086,800.00 | 150,000 | May 8, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseDerivative security10b5-1 plan not indicated | 20,000 | — | — | 0 | May 8, 2026 | May 12, 2026SEC filing |
| Sable KyleChief Financial Officer | Option exerciseDerivative security10b5-1 plan not indicated | 130,000 | — | — | 170,000 | May 8, 2026 | May 12, 2026SEC filing |
| Howley W NicholasDirector | GiftNon-derivative security10b5-1 plan not indicated | 3,480,640 | — | — | 606,200 | Apr 23, 2026 | Apr 24, 2026SEC filing |
| Howley W NicholasDirector | GiftNon-derivative security10b5-1 plan not indicated | 1,000,000 | — | — | 4,086,840 | Apr 1, 2026 | Apr 3, 2026SEC filing |
| Howley W NicholasDirector | Grant / awardNon-derivative security10b5-1 plan not indicated | 5,582,492 | — | — | 6,188,692 | Mar 3, 2026 | Mar 5, 2026SEC filing |
| Howley W NicholasDirector | GiftNon-derivative security10b5-1 plan not indicated | 1,101,852 | — | — | 5,086,840 | Mar 3, 2026 | Mar 5, 2026SEC filing |
| Thorndike William N JrDirector | Grant / awardNon-derivative security10b5-1 plan not indicated | 5,582,492 | — | — | 9,185,656 | Mar 3, 2026 | Mar 5, 2026SEC filing |
| Cool Tracy BrittDirector | Grant / awardNon-derivative security10b5-1 plan not indicated | 65,843 | — | — | 250,493 | Mar 3, 2026 | Mar 5, 2026SEC filing |
| Raj VivekDirector | Grant / awardNon-derivative security10b5-1 plan not indicated | 555,859 | — | — | 677,560 | Mar 3, 2026 | Mar 5, 2026SEC filing |
| Khouri HaithamChief Executive Officer, Director | Grant / awardNon-derivative security10b5-1 plan not indicated | 1,600,317 | — | — | 2,104,150 | Mar 3, 2026 | Mar 5, 2026SEC filing |
Review the entire collected insider disclosure history with a free account.
Full collected history is available here after sign-in, separate from the public 12-month window. It is not an exhaustive trading history.
The largest open-market transaction by reported value in the public window was an open-market sale by WINDACRE PARTNERSHIP LLC on Jun 26, 2026: $78,996,160.00, involving 2,296,400 shares. Reported price: $34.40.
0 public-window transactions explicitly indicate a 10b5-1 plan. A missing indication is not proof that a transaction was discretionary. Prices and values are shown only when reported; unavailable fields are not filled with zero.
Collected disclosures show 0 open-market purchases and 0 sales with transaction dates in the trailing 30 days ending Oct 15, 2026. Net reported purchase less sale value is $0.00. The latest collected disclosure data is as of Jun 30, 2026. These counts do not represent every insider action.
0 distinct insiders appear in collected disclosures for transaction dates in the trailing 30 days ending Oct 15, 2026. The latest collected Form 4 was filed on Jun 30, 2026. A filing date is not the transaction date.
This page shows 50 collected transactions dated in the trailing 12 months ending Oct 15, 2026. 0 older collected transactions are summarized outside this window and can be viewed here after sign-in. This is collected disclosure coverage, not exhaustive history; 10b5-1 plan status and derivative securities are labeled per record.
Insider data covers the trailing 12 months on public tables. Congressional tables cover all saved disclosures. Neither is an exhaustive history. Form 4 filing dates and congressional disclosure dates may differ from trade dates. Congressional amounts are ranges, not estimated dollar totals. Disclosure activity alone does not establish intent or predict returns.
From disclosure to research
Create a workspace for filing analysis and research notes. Filing-alert availability depends on your plan. Review the plan features separately; opening the plans page does not create an alert.