PRM Perimeter Solutions

• None no insider bought on the open market
• $240M sold by 6 insiders outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Windacre Partnership LLC 10% owner, +4 joint filers
   Sale
   $196M 5,705,979 shares at $34.28 26% of stake
   Traded Jun 26–30 Filed Jul 13
   ↗
3. Haitham Khouri CEO
   Sale
   $7.3M 229,535 shares at $31.73 11% of stake
   Traded May 20–22 Filed May 22
   ↗
4. Kyle Sable CFO
   Sale
   $1.6M 49,540 shares at $33.09 100% of stake
   Traded May 13 Filed May 15
   ↗
5. Jeffrey Emery President - Global Fire Safety
   Sale
   $1.8M 53,537 shares at $33.45 100% of stake
   Traded May 13 Filed May 15
   ↗
6. Kyle Sable CFO
   Sale
   $6.4M 200,460 shares at $31.69 100% of stake
   Traded May 8–12 Filed May 12
   ↗
7. Jeffrey Emery President - Global Fire Safety
   Sale
   $4.8M 146,463 shares at $32.63 100% of stake
   Traded May 8–11 Filed May 12
   ↗
8. William N Thorndike Jr. Director
   Sale
   $7.6M 325,000 shares at $23.39 3.7% of stake
   Traded Mar 9–11 Filed Mar 11
   ↗
9. William N Thorndike Jr. Director
   Sale
   $7.8M 325,000 shares at $24.00 3.5% of stake
   Traded Mar 4–6 Filed Mar 6
   ↗
10. Kyle Sable CFO
    Sale
    $2.8M 100,000 shares at $28.47 100% of stake
    Traded Dec 12, 2025 Filed Dec 16, 2025
    ↗
11. Noriko Yokozuka General Counsel
    Sale
    $3.9M 137,500 shares at $28.44 75% of stake
    Traded Dec 12, 2025 Filed Dec 16, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 11 option exercises, 5 stock grants, and 5 gifts.