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PRM

Perimeter Solutions (PRM) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $27.75 +0.2% on the day +27.9% over 12 months 52-week range $20.69 – $37.78

Share price and insider trades

PRM closeInsider buyInsider sale
2025303540NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $692,027 on 2026-05-20 · Haitham KhouriSold $952,500 on 2026-05-12 · Kyle SableSold $2,318,000 on 2026-03-11 · William N Thorndike Jr.Sold $2,363,000 on 2026-03-10 · William N Thorndike Jr.Sold $2,363,000 on 2026-03-06 · William N Thorndike Jr.Sold $2,406,000 on 2026-03-05 · William N Thorndike Jr.Sold $2,920,921 on 2026-03-09 · William N Thorndike Jr.Sold $2,926,913 on 2026-05-21 · Haitham KhouriSold $3,032,500 on 2026-03-04 · William N Thorndike Jr.Sold $3,429,879 on 2026-05-13 · Jeffrey Emery, Kyle SableSold $3,665,168 on 2026-05-22 · Haitham KhouriSold $3,964,136 on 2026-05-11 · Jeffrey Emery, Kyle SableSold $6,216,000 on 2026-05-08 · Jeffrey Emery, Kyle SableSold $6,757,500 on 2025-12-12 · Kyle Sable, Noriko YokozukaSold $28,875,000 on 2026-06-29 · Snehal Amin, Windacre Partnership LlcSold $127,125,000 on 2026-06-30 · Snehal Amin, Windacre Partnership LlcSold $235,218,125 on 2026-06-26 · Snehal Amin, Windacre Partnership Llc
Bought, 12 months$0
Sold, 12 months$435M
Insiders buying0
Insiders selling7

Perimeter Solutions insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 7 sold $435M of PRM stock on the open market.

PRM insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $6.8M sold (2 trades)Q4 2025Q1 2026: $15.4M sold (7 trades)Q1 2026Q2 2026: $413M sold (26 trades)Q2 2026Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0—0
Q2 2026—0$413M26
Q1 2026—0$15.4M7
Q4 2025—0$6.8M2

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day0.8×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 Perimeter Solutions, Inc. insiders reported open-market purchases totaling $0, while 7 insiders reported sales totaling $435M. 0 of 35 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Jul 13SEC Snehal Amin10% Owner Sell 2,296,40019,029,600 held (−11%) $34.40 $79.0M -19.3% —
Jul 13SEC Snehal Amin10% Owner Sell 1,875,00016,148,621 held (−10%) $33.90 $63.6M -18.1% —
Jul 13SEC Snehal Amin10% Owner Sell 548,47918,461,121 held (−3%) $34.51 $18.9M -19.6% —
Jul 13SEC Snehal Amin10% Owner Sell 437,50018,023,621 held (−2%) $33.00 $14.4M -15.9% —
Jul 13SEC Snehal Amin10% Owner Sell 378,60021,476,000 held (−2%) $36.22 $13.7M -23.4% —
Jul 13SEC Snehal Amin10% Owner Sell 150,00021,326,000 held (−1%) $34.98 $5.2M -20.7% —
Jul 13SEC Snehal Amin10% Owner Sell 20,00019,009,600 held (−0%) $36.25 $725K -23.4% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 2,296,40019,029,600 held (−11%) $34.40 $79.0M -19.3% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 1,875,00016,148,621 held (−10%) $33.90 $63.6M -18.1% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 548,47918,461,121 held (−3%) $34.51 $18.9M -19.6% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 437,50018,023,621 held (−2%) $33.00 $14.4M -15.9% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 378,60021,476,000 held (−2%) $36.22 $13.7M -23.4% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 150,00021,326,000 held (−1%) $34.98 $5.2M -20.7% —
Jun 30SEC Windacre Partnership Llc10% Owner Sell 20,00019,009,600 held (−0%) $36.25 $725K -23.4% —
May 22SEC Haitham KhouriCEO Sell 117,5111,874,615 held (−6%) $31.19 $3.7M -11.0% —
May 22SEC Haitham KhouriCEO Sell 91,7241,992,126 held (−4%) $31.91 $2.9M -13.0% —
May 22SEC Haitham KhouriCEO Sell 20,3002,083,850 held (−1%) $34.09 $692K -18.6% —
May 15SEC Jeffrey EmeryPresident Sell 53,537 $33.45 $1.8M -17.0% —
May 15SEC Kyle SableCFO Sell 46,2633,277 held (−93%) $33.05 $1.5M -16.0% —
May 15SEC Kyle SableCFO Sell 3,277 $33.59 $110K -17.4% —
May 12SEC Kyle SableCFO Sell 150,000 $31.52 $4.7M -12.0% —
May 12SEC Jeffrey EmeryPresident Sell 97,8552,108 held (−98%) $32.90 $3.2M -15.7% —
May 12SEC Jeffrey EmeryPresident Sell 46,500 $32.00 $1.5M -13.3% —
May 12SEC Kyle SableCFO Sell 30,000 $31.75 $952K -12.6% —
May 12SEC Kyle SableCFO Sell 20,460 $32.89 $673K -15.6% —
May 12SEC Jeffrey EmeryPresident Sell 2,108 $34.05 $72K -18.5% —
Mar 11SEC William N Thorndike Jr.Director Sell 100,0008,635,656 held (−1%) $23.63 $2.4M +17.4% —
Mar 11SEC William N Thorndike Jr.Director Sell 100,0008,535,656 held (−1%) $23.18 $2.3M +19.7% —
Mar 11SEC William N Thorndike Jr.Director Sell 90,0438,770,613 held (−1%) $23.18 $2.1M +19.7% —
Mar 11SEC William N Thorndike Jr.Director Sell 34,9578,735,656 held (−0%) $23.85 $834K +16.4% —
Mar 6SEC William N Thorndike Jr.Director Sell 125,0009,060,656 held (−1%) $24.26 $3.0M +14.4% —
Mar 6SEC William N Thorndike Jr.Director Sell 100,0008,960,656 held (−1%) $24.06 $2.4M +15.3% —
Mar 6SEC William N Thorndike Jr.Director Sell 100,0008,860,656 held (−1%) $23.63 $2.4M +17.4% —
Dec 16SEC Noriko YokozukaGeneral Counsel Sell 137,50047,157 held (−74%) $28.44 $3.9M -2.4% —
Dec 16SEC Kyle SableCFO Sell 100,000 $28.47 $2.8M -2.5% —

Insiders at Perimeter Solutions, Inc.

InsiderBoughtSoldLast filingScore
Snehal Amin10% Owner — $196M Jul 13, 2026 —
Windacre Partnership Llc10% Owner — $196M Jun 30, 2026 —
William N Thorndike Jr.Director — $15.4M Mar 11, 2026 —
Kyle SableCFO — $10.8M May 15, 2026 —
Haitham KhouriCEO — $7.3M May 22, 2026 —
Jeffrey EmeryPresident — $6.6M May 15, 2026 —
Noriko YokozukaGeneral Counsel — $3.9M Dec 16, 2025 —

PRM stock: common questions

Are Perimeter Solutions, Inc. insiders buying PRM stock?

In the past 12 months, 0 insiders reported open-market purchases of PRM worth $0.

Are Perimeter Solutions, Inc. insiders selling PRM stock?

7 insiders reported sales worth $435M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is PRM's 52-week range?

Over the past year PRM has traded between $20.69 and $37.78. It last closed at $27.75 on Oct 9, 2026.