Clean Harbors
Combines hazardous-waste infrastructure with industrial services and used-oil re-refining.
$310.71
After-hours close+0.07 (+0.02%)
At close$310.64(−0.38%)
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Breakdown13F · Form 4
Institutions 127.32%Insiders 4.80%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 52.79M · Float 50.05M · 94.8% free float
Institutions13F, as of Jun 30, 2026
669 holders · 67.21M shares · 100 new positions · 305 increased · 249 reduced · 66 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 5.08M | 9.62% | +273.7K | Aug 7, 2026 |
| Wellington Management Group LLP | 3.16M | 5.98% | −421.8K | Aug 14, 2026 |
| FMR LLC | 3.00M | 5.69% | +901.5K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 2.18M | 4.14% | +13.6K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.98M | 3.76% | +20.4K | Aug 13, 2026 |
| Jupiter Topco LLC | 1.60M | 3.03% | +1.60Mnew | Aug 14, 2026 |
| State Street Corp | 1.58M | 3.00% | +44.7K | Aug 7, 2026 |
| D1 Capital Partners L.P. | 1.32M | 2.49% | −22.8K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Wellington Management Group LLP | 6.80% | 3.58M | 13G | May 15, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Alan S. Mckim | director, officer: EXEC CHAIR, CTO. | 2.10M | 3.97% | Jul 20, 2026 |
| Michael Louis Battles | director, officer: CO-CEO | 94.4K | 0.18% | Aug 12, 2026 |
| Eric W. Gerstenberg | officer: CO-CEO | 56.8K | 0.11% | Aug 18, 2026 |
| Brian P. Weber | officer: EVP (CHESI) | 47.9K | 0.09% | Jul 6, 2026 |
| George L. Curtis | officer: EXEC. VICE PRESIDENT (CHESI) | 44.3K | 0.08% | Aug 11, 2026 |
| Edward G. Galante | director | 25.5K | 0.05% | May 22, 2026 |
| Sharon M. Gabriel | officer: EVP/CIO (CHESI) | 20.7K | 0.04% | Jul 6, 2026 |
| Rebecca Underwood | officer: PRESIDENT & EVP FACILITIES | 18.4K | 0.03% | Jul 6, 2026 |
| Eric J. Dugas | officer: EVP CHIEF FINANCIAL OFFICER | 17.6K | 0.03% | Aug 14, 2026 |
| Robert Speights | officer: PRESIDENT, INDUSTRIAL SERVICES | 16.3K | 0.03% | May 28, 2025 |
2 ten-percent owners hold 68.9K shares by Form 4, outside the officers-and-directors figure above · 40 people have not refiled in the last 18 months (773.1K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 14, 2026 | Eric W. Gerstenbergofficer: CO-CEO | Sale | 2,500 | $321.34 | 56,793 |
| Mar 18, 2026 | Eric W. Gerstenbergofficer: CO-CEO | Sale | 1,000 | $293.00 | 59,857 |
| Feb 23, 2026 | Eric W. Gerstenbergofficer: CO-CEO | Sale | 2,500 | $279.86 | 64,000 |
| Feb 20, 2026 | Eric J. Dugasofficer: EVP CHIEF FINANCIAL OFFICER | Sale | 2,788 | $281.31 | 20,021 |
| Aug 3, 2026 | Andrea Robertsondirector | Sale | 789 | $314.01 | 8,979 |
| May 26, 2026 | Lauren Statesdirector | Sale | 789 | $286.19 | 11,359 |
| May 11, 2026 | Karyn Politodirector | Purchase | 460 | $295.13 | 3,475 |
| Mar 18, 2026 | Marcy L. Reeddirector | Sale | 836 | $287.94 | 5,081 |
| Mar 17, 2026 | Brian P. Weberofficer: EVP (CHESI) | Sale | 4,683 | $293.39 | 48,728 |
| Mar 4, 2026 | Alan S. Mckimdirector, officer: EXEC CHAIR, CTO. | Sale | 100,000 | $292.65 | 2,065,368 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. April Delaney · MD06 | Sale | $1,001 – $15,000 | Jul 28, 2026 | Aug 4, 2026 ↗ | |
| Rep. April Delaney · MD06 | Sale | $1,001 – $15,000 | Jul 27, 2026 | Aug 4, 2026 ↗ | |
| Rep. April Delaney · MD06 | Sale | $1,001 – $15,000 | Jul 24, 2026 | Aug 4, 2026 ↗ | |
| Rep. April Delaney · MD06 | Sale | $1,001 – $15,000 | May 1, 2026 | Jun 8, 2026 ↗ | |
| Rep. April Delaney · MD06 | Sale | $1,001 – $15,000 | Apr 30, 2026 | May 7, 2026 ↗ |