Quick Answer
CLEAN HARBORS INC reported Shares Outstanding of 52.87 million shares for fiscal year 2025.
CLEAN HARBORS INC Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 52.87M | -1.8% |
| 2024 | 53.83M | -0.2% |
| 2023 | 53.93M | -0.2% |
| 2022 | 54.06M | -0.7% |
| 2021 | 54.42M | -0.6% |
| 2020 | 54.77M | -1.8% |
| 2019 | 55.80M | -0.1% |
| 2018 | 55.85M | -1.2% |
| 2017 | 56.50M | -1.4% |
| 2016 | 57.30M | -0.5% |
| 2015 | 57.59M | -2.2% |
| 2014 | 58.90M | -2.9% |
| 2013 | 60.67M | +0.5% |
| 2012 | 60.39M | +13.5% |
| 2011 | 53.18M | +0.8% |
| 2010 | 52.77M | +101.2% |
| 2009 | 26.23M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 53.43M | -0.9% | -0.3% |
| June 30, 2025 | 53.61M | -0.6% | -0.0% |
| March 31, 2025 | 53.64M | -0.5% | -0.4% |
| December 31, 2024 | 53.83M | -0.2% | -0.1% |
| September 30, 2024 | 53.90M | -0.4% | -0.1% |
| June 30, 2024 | 53.93M | -0.3% | +0.0% |
| March 31, 2024 | 53.93M | -0.3% | -0.0% |
| December 31, 2023 | 53.93M | -0.2% | -0.3% |
- CLEAN HARBORS INC showed a decrease of -1.8% in Shares Outstanding compared to the prior fiscal year.
- Over the 2009–2025 period, CLEAN HARBORS INC’s shares outstanding has grown by 101.6% (from 26.23 million shares to 52.87 million shares).
- The most recent figure is from CLEAN HARBORS INC’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 18, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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