🕵️ Clean Harbors Inc ($CLH)
SEC insider & ownership activity, last 12 months · CIK 822818 · every row links its SEC filing
Over the last 12 months insiders sold $62.5M against $603K of open-market buying. Alan S. McKim sold $57.4M in discretionary trades (Feb–Mar). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $603K (2 lots) · 9 sellers, $62.5M (12 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Alan S. McKim | 0 | – | 2 | $57.4M | Mar 4, 2026 |
| Brian Weber | 0 | – | 1 | $1.4M | Mar 17, 2026 |
| Eric W. Gerstenberg | 0 | – | 3 | $1.1M | Mar 18, 2026 |
| Sharon M Gabriel | 0 | – | 1 | $999K | Feb 20, 2026 |
| Eric Dugas | 0 | – | 1 | $784K | Feb 20, 2026 |
| Battles Michael Louis | 1 | $467K | 0 | – | Aug 1, 2025 |
| Marcy L. Reed | 0 | – | 1 | $241K | Mar 18, 2026 |
| Lauren States | 0 | – | 1 | $226K | May 26, 2026 |
| John R. Welch | 0 | – | 1 | $205K | Feb 19, 2026 |
| Robertson Andrea | 0 | – | 1 | $195K | Jul 31, 2025 |
| Polito Karyn | 1 | $136K | 0 | – | May 11, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 6.8% | 13G | May 15, 2026 | filing ↗ | |
| Wellington Group Holdings LLP | 6.8% | 13G | May 15, 2026 | filing ↗ | |
| Wellington Investment Advisors Holdings LLP | 6.8% | 13G | May 15, 2026 | filing ↗ | |
| Wellington Management Company LLP | 5.5% | 13G | May 15, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Lauren States | $226K | May 26, 2026 | filing ↗ |
| Eric W. Gerstenberg | $290K | Mar 18, 2026 | filing ↗ |
| Marcy Reed | $241K | Mar 18, 2026 | filing ↗ |
| Brian Weber | $1.4M | Mar 17, 2026 | filing ↗ |
| Alan S. McKim | $29.3M | Mar 4, 2026 | filing ↗ |
| Eric W. Gerstenberg | $712K | Feb 23, 2026 | filing ↗ |
| Sharon M Gabriel | $999K | Feb 20, 2026 | filing ↗ |
| Eric Dugas | $784K | Feb 20, 2026 | filing ↗ |
| Alan S. McKim | $30.5M | Feb 19, 2026 | filing ↗ |
| John Welch | $205K | Feb 19, 2026 | filing ↗ |
| Eric W. Gerstenberg | $145K | Dec 15, 2025 | filing ↗ |
| Andrea Robertson | $195K | Jul 31, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 29, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 20, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 19, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 19, 2026 | filing ↗ |
| Other events (8.01) | May 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 14, 2026 | filing ↗ |
| Earnings (2.02) | May 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 6, 2026 | filing ↗ |
| Earnings (2.02) | Feb 18, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 18, 2026 | filing ↗ |
| Earnings (2.02) | Oct 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 29, 2025 | filing ↗ |
| Material agreement (1.01) | Oct 9, 2025 | filing ↗ |
| New financial obligation (2.03) | Oct 9, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 9, 2025 | filing ↗ |
| Other events (8.01) | Sep 25, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 25, 2025 | filing ↗ |
| Earnings (2.02) | Jul 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 30, 2025 | filing ↗ |