CLH Clean Harbors

• $136K bought by 1 insider
• $63.4M sold by 9 insiders outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Eric W Gerstenberg CEO
   Sale
   $803K 2,500 shares at $321.34 4.2% of stake
   Traded Aug 14 Filed Aug 18
   ↗
3. Eric J. Dugas CFO
   Sale
   $784K 2,788 shares at $281.31 12% of stake
   Traded Feb 20 Filed Aug 14
   ↗
4. Eric W Gerstenberg CEO
   Sale
   $293K 1,000 shares at $293.00 1.6% of stake
   Traded Mar 18 Filed Aug 14
   ↗
5. Eric W Gerstenberg CEO
   Sale
   $700K 2,500 shares at $279.86 3.8% of stake
   Traded Feb 23 Filed Aug 14
   ↗
6. Andrea Robertson Director
   Sale
   $248K 789 shares at $314.01 8.1% of stake
   Traded Aug 3 Filed Aug 3
   ↗
7. Lauren States Director
   Sale
   $226K 789 shares at $286.19 6.5% of stake
   Traded May 26 Filed May 27
   ↗
8. Karyn Polito Director
   Buy
   $136K 460 shares at $295.13 +15% to stake
   Traded May 11 Filed May 14
   ↗
9. Marcy L. Reed Director
   Sale
   $241K 836 shares at $287.94 14% of stake
   Traded Mar 18 Filed Mar 19
   ↗
10. Brian P Weber EVP (chesi)
    Sale
    $1.4M 4,683 shares at $293.39 8.8% of stake
    Traded Mar 17 Filed Mar 17
    ↗
11. Alan S McKim Chair
    Sale
    $29.3M 100,000 shares at $292.65 4.6% of stake
    Traded Mar 4 Filed Mar 5
    ↗
12. Alan S McKim Chair
    Sale
    $28.1M 100,000 shares at $281.14 4.2% of stake
    Traded Feb 19 Filed Feb 23
    ↗
13. Sharon M. Gabriel EVP/CIO (chesi)
    Sale
    $999K 3,540 shares at $282.07 13% of stake
    Traded Feb 20 Filed Feb 20
    ↗
14. John R. Welch Director
    Sale
    $205K 750 shares at $273.07 6.8% of stake
    Traded Feb 19 Filed Feb 20
    ↗
15. Eric W Gerstenberg CEO
    Sale
    $145K 601 shares at $240.90 1.2% of stake
    Traded Dec 16, 2025 Filed Dec 17, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 36 share withholdings for taxes, 29 stock grants, 9 sales back to the company, and 5 gifts.