TickerFacts.

Clean Harbors Inc (CLH): Shares Outstanding

Annual figures by period end, from SEC filings.

Stock splits: 2-for-1, first reflected in a filing dated 2011-08-09. Figures are as filed: per-share figures and share counts last reported before a split are on the old share basis, so changes and growth rates across a split are not shown. Splits are read from the filings' own restatements, so a share conversion in a merger or reorganization shows up the same way.

Restated years: each year's figure is from the latest filing that reports it. The company later restated the year ended 2018-12-31 (for example after a spin-off or a discontinued operation), while the year before it was last reported on the old basis. Changes across those points are marked n/c (not comparable), and growth rates are not computed across them.

52.87M
As of 2025-12-31
52.83M
As of 2026-03-31
-0.7%
3-year compound annual growth
-0.7%
5-year compound annual growth
60.67M2009-12-31: 26.23M2010-12-31: 52.77M2011-12-31: 53.18M2012-12-31: 60.39M2013-12-31: 60.67M2014-12-31: 58.90M2015-12-31: 57.59M2016-12-31: 57.30M2017-12-31: 56.50M2018-12-31: 55.85M2019-12-31: 55.80M2020-12-31: 54.77M2021-12-31: 54.42M2022-12-31: 54.06M2023-12-31: 53.93M2024-12-31: 53.83M2025-12-31: 52.87M52.87M
2009-12-31 Shares Outstanding (shares) 2025-12-31

Paler bars were last filed before a stock split, on the old share basis.

Period endedShares OutstandingChange YoYSource filing
2025-12-3152.87M-1.8%2026-02-18, Balance as of period end
2024-12-3153.83M-0.2%2026-02-18, Balance as of period end
2023-12-3153.93M-0.2%2025-02-19, Balance as of period end
2022-12-3154.06M-0.7%2024-02-21, Balance as of period end
2021-12-3154.42M-0.6%2023-03-01, Balance as of period end
2020-12-3154.77M-1.8%2022-02-23, Balance as of period end
2019-12-3155.80M-0.1%2021-02-24, Balance as of period end
2018-12-3155.85Mn/c2020-02-26, Balance as of period end
2017-12-3156.50M-1.4%2019-02-27, Balance as of period end
2016-12-3157.30M-0.5%2018-02-28, Balance as of period end
2015-12-3157.59M-2.2%2017-02-22, Balance as of period end
2014-12-3158.90M-2.9%2016-02-25, Balance as of period end
2013-12-3160.67M+0.5%2015-03-02, Balance as of period end
2012-12-3160.39M+13.5%2014-03-03, Balance as of period end
2011-12-3153.18M+0.8%2013-03-06, Balance as of period end
2010-12-3152.77Mn/c2012-02-29, Balance as of period end
2009-12-3126.23Mn/a2011-03-01, Balance as of period end