Clean Harbors Inc (CLH)
Who owns Clean Harbors Inc (CLH)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 94.8% of the shares are freely tradable; institutional investors hold 97.0%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.09 | 4,802,492 | +4.4 | 03/31/2026 |
| Wellington Management Company LLP | 6.77 | 3,577,034 | -31.0 | 03/31/2026 |
| HHG PLC | 4.46 | 2,355,394 | -0.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.11 | 2,169,364 | +0.0 | 03/31/2026 |
| FMR Inc | 3.98 | 2,101,179 | +464.6 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.71 | 1,962,951 | +0.0 | 03/31/2026 |
| Lone Pine Capital LLC | 3.32 | 1,754,950 | +27.3 | 03/31/2026 |
| State Street Corp | 2.91 | 1,537,297 | +2.3 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.22 | 1,699,654 | +0.2 | 07/28/2026 |
| Fidelity Contrafund | 3.06 | 1,614,129 | +17.3 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 17. Jul 2026 | Mckim Alan S | EXEC CHAIR, CTO. | Other | 1,265 | 310.58 | 392,884 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.