美国生态
ECOL

股本结构

单位：万股
公告日期 2022-04-29 2022-03-29 2021-11-05 2021-11-05 2021-08-02 2021-08-02
证券总股本 3151.23 3133.75 3151.23 3151.20 3151.23 3126.10
普通股本 3151.23 3133.75 3151.23 3151.20 3151.23 3126.10
优先股 未披露 未披露 未披露 未披露 未披露 未披露
其他 未披露 未披露 未披露 未披露 未披露 未披露
变动日期 2022-04-27 2022-03-28 2021-11-02 2021-09-30 2021-07-27 2021-06-30
注释：中概股证券总股本=普通股股本/ 存托凭证比例

历史变动

公告日期 变动后普通股本（万股） 变动后优先股（万股） 变动原因 变动日期
2022-04-29 3151.23 未披露 定期报告 2022-04-27
2022-03-29 3133.75 未披露 定期报告 2022-03-28
2021-11-05 3151.23 未披露 定期报告 2021-11-02
2021-11-05 3151.20 未披露
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From June 30, 2021 to September 30, 2021 Issuance of restricted common stock and common stock from treasury shares
2021-09-30
2021-08-02 3151.23 未披露 定期报告 2021-07-27
2021-08-02 3126.10 未披露
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From March 31,2021 to June 30, 2021 Issuance of restricted common stock and common stock from treasury shares
2021-06-30
2021-05-03 3151.23 未披露 定期报告 2021-04-27
2021-05-03 3151.20 未披露
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from December 31, 2020 to March 31, 2021 Repurchase of common stock Issuance of restricted common stock and common stock from treasury shares
2021-03-31
2021-04-13 3120.50 未披露 定期报告 2021-03-29
2021-03-01 3149.95 未披露 定期报告 2021-02-22
2021-03-01 3151.20 未披露
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From December 31, 2019 to December 31, 2020 Stock option exercises Issuance of restricted common stock Issuance of performance common stock
2020-12-31
2020-11-06 3151.23 未披露 定期报告 2020-11-03
2020-11-06 3114.40 未披露
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From June 30, 2020 to September 30, 2020 Issuance of restricted common stock from treasury shares
2020-09-30
2020-08-10 3150.97 未披露 定期报告 2020-08-04
2020-08-10 3113.90 未披露
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From March 31, 2020 to June 30,2020 Issuance of restricted common stock from treasury shares
2020-06-30
2020-05-11 3150.31 未披露 定期报告 2020-05-05
2020-04-20 3108.83 未披露 定期报告 2020-04-06
2020-05-11 3150.30 未披露
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From December 31, 2019 to March 31, 2020 Repurchase of common stock
2020-03-31
2020-03-02 3151.64 未披露 定期报告 2020-02-26
2020-03-02 3146.10 未披露
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from December 31, 2018 to December 31, 2019 Common stock issued in NRC Merger Stock option exercises Repurchase of common stock: 14,462 shares Issuance of restricted common stock Issuance of performance common stock Issuance of restricted common stock from treasury shares Cancellation of treasury shares
2019-12-31
2019-11-01 2954.72 未披露
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Pursuant to the merger agreement, US Ecology stockholders received a fixed exchange ratio of 1.00 share of new US Ecology for each share held and NRC Group stockholders received a fixed exchange ratio of 0.196 shares of new US Ecology for each NRC share held.
2019-11-01
2019-11-04 2209.39 未披露 定期报告 2019-10-29
2019-11-04 2208.10 未披露
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from June 30, 2019 to September 30, 2019 Issuance of restricted common stock from treasury shares
2019-09-30
2019-08-05 2208.93 未披露 定期报告 2019-07-30
2019-08-05 2207.50 未披露
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from March 31, 2019 to June 30, 2019 Issuance of restricted common stock from treasury shares
2019-06-30
2019-05-06 2208.90 未披露 定期报告 2019-04-30
2019-05-06 2206.70 未披露
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from December 31, 2018 to March 31, 2019 Stock option exercises and issuance of common stock and restricted common stock Repurchase of common stock
2019-03-31
2019-04-11 2206.44 未披露 定期报告 2019-03-29
2019-02-28 2207.02 未披露 定期报告 2019-02-20
2019-02-28 2203.20 未披露
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from December 31, 2017 to December 31, 2018 Stock option exercises Issuance of restricted common stock Issuance of performance common stock
2018-12-31
2018-11-05 2203.98 未披露 定期报告 2018-10-31
2018-11-05 2203.20 未披露 定期报告 2018-09-30
2018-08-06 2198.48 未披露 定期报告 2018-08-01
2018-08-06 2196.80 未披露 定期报告 2018-06-30
2018-05-07 2193.15 未披露 定期报告 2018-05-02
2018-05-07 2192.30 未披露 定期报告 2018-03-31
2018-04-11 2192.37 未披露 定期报告 2018-03-29
2018-02-26 2187.54 未披露 定期报告 2018-02-16
2018-02-26 2184.60 未披露
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from December 31, 2016 to December 31, 2017 Stock option exercises Issuance of restricted common stock
2017-12-31
2017-10-30 2184.92 未披露 定期报告 2017-10-25
2017-10-30 2184.70 未披露 定期报告 2017-09-30
2017-07-31 2182.88 未披露 定期报告 2017-07-26
2017-07-31 2182.50 未披露 定期报告 2017-06-30
2017-05-01 2182.25 未披露 定期报告 2017-04-26
2017-05-01 2181.40 未披露 定期报告 2017-03-31
2017-04-12 2179.45 未披露 定期报告 2017-03-29
2017-02-27 2179.89 未披露 定期报告 2017-02-17
2017-02-27 2177.27 未披露
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From December 31, 2015 to December 31, 2016 Stock option exercises Repurchase of common stock: 6,589 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
2016-12-31
2016-10-31 2177.97 未披露 定期报告 2016-10-26
2016-10-31 2177.30 未披露 定期报告 2016-09-30
2016-08-01 2177.37 未披露 定期报告 2016-07-27
2016-08-01 2177.40 未披露 定期报告 2016-06-30
2016-06-03 2177.06 未披露 定期报告 2016-06-01
2016-05-02 2176.67 未披露 定期报告 2016-04-27
2016-04-22 2175.99 未披露 定期报告 2016-04-08
2016-05-02 2176.00 未披露 定期报告 2016-03-31
2016-02-29 2176.63 未披露 定期报告 2016-02-19
2016-02-29 2173.90 未披露
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From December 31, 2014 to December 31, 2015 Stock option exercises Repurchase of common stock: 6,150 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
2015-12-31
2015-11-04 2173.53 未披露 定期报告 2015-10-30
2015-11-04 2173.50 未披露 定期报告 2015-09-30
2015-08-07 2170.62 未披露 定期报告 2015-08-05
2015-08-07 2170.70 未披露 定期报告 2015-06-30
2015-04-15 2165.90 未披露 定期报告 2015-04-02
2015-05-04 2165.90 未披露 定期报告 2015-03-31
2015-03-02 2163.24 未披露 定期报告 2015-02-20
2015-03-02 2163.10 未披露
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from December 31, 2013 to December 31, 2014 Stock option exercises Repurchase of common stock: 4,860 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
2014-12-31
2014-11-07 2162.66 未披露 定期报告 2014-11-05
2014-11-06 2162.70 未披露 定期报告 2014-09-30
2014-08-11 2162.43 未披露 定期报告 2014-08-07
2014-08-11 2161.10 未披露 定期报告 2014-06-30
2014-05-07 2155.12 未披露 定期报告 2014-05-02
2014-05-07 2153.00 未披露 定期报告 2014-03-31
2014-04-10 2152.94 未披露 定期报告 2014-03-28
2014-02-25 2154.24 未披露 定期报告 2014-02-21
2014-02-25 2151.90 未披露
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from December 31, 2012 to December 31, 2013 Stock option exercises Issuance of common stock in connection with public offering (net of issuance costs of $5,229) Issuance of restricted common stock from treasury shares
2013-12-31
2013-10-31 1853.45 未披露 定期报告 2013-10-25
2013-10-31 1851.50 未披露 定期报告 2013-09-30
2013-08-01 1853.01 未披露 定期报告 2013-07-26
2013-08-01 1850.60 未披露 定期报告 2013-06-30
2013-04-30 1832.29 未披露 定期报告 2013-04-26
2013-04-18 1841.03 未披露 定期报告 2013-04-05
2013-04-30 1841.10 未披露 定期报告 2013-03-31
2013-03-01 1839.90 未披露 定期报告 2013-02-27
2013-03-01 1831.40 未披露
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from December 31, 2011 to December 31, 2012 Stock option exercises Issuance of restricted common stock from treasury shares
2012-12-31
2012-11-02 1832.29 未披露 定期报告 2012-10-31
2012-11-02 1825.20 未披露 定期报告 2012-09-30
2012-08-03 1832.29 未披露 定期报告 2012-08-01
2012-08-03 1825.20 未披露 定期报告 2012-06-30
2012-05-08 1832.29 未披露 定期报告 2012-05-04
2012-05-08 1824.50 未披露 定期报告 2012-03-31
2012-02-29 1832.02 未披露 定期报告 2012-02-27
2012-02-29 1822.70 未披露
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from December 31, 2010 to December 31, 2011 Stock option exercises Issuance of restricted common stock from treasury shares
2011-12-31
2011-11-08 1831.75 未披露 定期报告 2011-11-04
2011-11-08 1822.50 未披露
更多>>
from Dec 31 2010 to Sep 30 2011 Stock option exercises Issuance of restricted common stock from treasury shares
2011-09-30
2011-03-15 1831.06 未披露 定期报告 2011-03-11
2011-03-15 1819.20 未披露
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from December 31,2009 to December 31,2010 Stock option exercises Issuance of restricted common stock from treasury shares
2010-12-31
2010-04-30 1830.56 未披露 定期报告 2010-04-28
2010-04-30 1818.40 未披露 定期报告 2010-03-31
2010-03-04 1831.99 未披露 定期报告 2010-03-02
2010-03-04 1815.10 未披露
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from December 31,2008 to December 31,2009 Issuance of restricted common stock net of forfeitures Repurchase of common stock: 140 shares
2009-12-31
2009-02-25 1830.43 未披露 定期报告 2009-02-23
2009-02-25 1814.90 未披露
更多>>
from December 31,2007 to December 31,2008 Stock option exercises Issuance of restricted common stock
2008-12-31
2008-02-27 1824.62 未披露 定期报告 2008-02-25
2008-02-27 1824.60 未披露
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from December 31,2006 to December 31,2007 Stock option exercises Issuance of restricted common stock
2007-12-31
2007-03-09 1822.42 未披露 定期报告 2007-03-05
2007-03-09 1817.40 未披露
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from December 31,2005 to December 31,2006 Stock option exercises Issuance of restricted common stock
2006-12-31
2006-02-21 1777.56 未披露 定期报告 2006-02-21
2006-02-21 1774.24 未披露
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from December 31,2004 to December 31,2005 Common stock issuance
2005-12-31
2005-03-01 1741.13 未披露 定期报告 2005-03-01
2005-03-01 1739.85 未披露
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from December 31,2003 to December 31,2004 Common stock issuance
2004-12-31
2004-03-16 1716.14 未披露 定期报告 2004-03-12
2004-03-16 1703.31 未披露
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from December 31,2002 to December 31,2003 Common stock issuance Retirement of preferred stock
2003-12-31
2003-02-18 1454.68 未披露 定期报告 2003-02-10
2003-02-18 1453.93 10.00
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from December 31,2001 to December 31,2002 Common stock issuance
2002-12-31
2002-03-27 1376.65 10.00
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from December 31,2000 to December 31,2001 Common stock issuance Common stock cancelled
2001-12-31
2001-03-29 1372.96 未披露 定期报告 2001-03-27
2001-03-29 1372.96 10.00 定期报告 2000-12-31
2000-03-20 1370.41 10.00
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from December 31,1998 to December 31,1999 Common stock issuance
1999-12-31
1999-03-31 1355.73 40.53
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from December 31,1997 to December 31,1998 Common stock issuance
1998-12-31
1998-03-31 1349.84 未披露 定期报告 1998-03-26
1998-03-31 846.25 40.53
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from December 31,1996 to December 31,1997 Common stock issuances
1997-12-31
1997-03-28 801.53 未披露 定期报告 1997-03-25
1997-03-28 801.00 40.53
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from December 31,1995 to December 31,1996 Preferred stock issuances Common stock issuances
1996-12-31
1996-05-21 782.56 10.53
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from December 31,1994 to December 31,1995 Preferred stock issuances
1995-12-31
1995-04-14 781.88 未披露 定期报告 1994-12-31
1995-04-14 778.36 未披露
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from December 31,1992 to December 31,1993 Common stock issued for acquisition Other common stock issuances,net of repurchases
1993-12-31
From June 30, 2021 to September 30, 2021 Issuance of restricted common stock and common stock from treasury shares
From March 31,2021 to June 30, 2021 Issuance of restricted common stock and common stock from treasury shares
from December 31, 2020 to March 31, 2021 Repurchase of common stock Issuance of restricted common stock and common stock from treasury shares
From December 31, 2019 to December 31, 2020 Stock option exercises Issuance of restricted common stock Issuance of performance common stock
From June 30, 2020 to September 30, 2020 Issuance of restricted common stock from treasury shares
From March 31, 2020 to June 30,2020 Issuance of restricted common stock from treasury shares
From December 31, 2019 to March 31, 2020 Repurchase of common stock
from December 31, 2018 to December 31, 2019 Common stock issued in NRC Merger Stock option exercises Repurchase of common stock: 14,462 shares Issuance of restricted common stock Issuance of performance common stock Issuance of restricted common stock from treasury shares Cancellation of treasury shares
Pursuant to the merger agreement, US Ecology stockholders received a fixed exchange ratio of 1.00 share of new US Ecology for each share held and NRC Group stockholders received a fixed exchange ratio of 0.196 shares of new US Ecology for each NRC share held.
from June 30, 2019 to September 30, 2019 Issuance of restricted common stock from treasury shares
from March 31, 2019 to June 30, 2019 Issuance of restricted common stock from treasury shares
from December 31, 2018 to March 31, 2019 Stock option exercises and issuance of common stock and restricted common stock Repurchase of common stock
from December 31, 2017 to December 31, 2018 Stock option exercises Issuance of restricted common stock Issuance of performance common stock
from December 31, 2016 to December 31, 2017 Stock option exercises Issuance of restricted common stock
From December 31, 2015 to December 31, 2016 Stock option exercises Repurchase of common stock: 6,589 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
From December 31, 2014 to December 31, 2015 Stock option exercises Repurchase of common stock: 6,150 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
from December 31, 2013 to December 31, 2014 Stock option exercises Repurchase of common stock: 4,860 shares Issuance of restricted common stock Issuance of restricted common stock from treasury shares
from December 31, 2012 to December 31, 2013 Stock option exercises Issuance of common stock in connection with public offering (net of issuance costs of $5,229) Issuance of restricted common stock from treasury shares
from December 31, 2011 to December 31, 2012 Stock option exercises Issuance of restricted common stock from treasury shares
from December 31, 2010 to December 31, 2011 Stock option exercises Issuance of restricted common stock from treasury shares
from Dec 31 2010 to Sep 30 2011 Stock option exercises Issuance of restricted common stock from treasury shares
from December 31,2009 to December 31,2010 Stock option exercises Issuance of restricted common stock from treasury shares
from December 31,2008 to December 31,2009 Issuance of restricted common stock net of forfeitures Repurchase of common stock: 140 shares
from December 31,2007 to December 31,2008 Stock option exercises Issuance of restricted common stock
from December 31,2006 to December 31,2007 Stock option exercises Issuance of restricted common stock
from December 31,2005 to December 31,2006 Stock option exercises Issuance of restricted common stock
from December 31,2004 to December 31,2005 Common stock issuance
from December 31,2003 to December 31,2004 Common stock issuance
from December 31,2002 to December 31,2003 Common stock issuance Retirement of preferred stock
from December 31,2001 to December 31,2002 Common stock issuance
from December 31,2000 to December 31,2001 Common stock issuance Common stock cancelled
from December 31,1998 to December 31,1999 Common stock issuance
from December 31,1997 to December 31,1998 Common stock issuance
from December 31,1996 to December 31,1997 Common stock issuances
from December 31,1995 to December 31,1996 Preferred stock issuances Common stock issuances
from December 31,1994 to December 31,1995 Preferred stock issuances
from December 31,1992 to December 31,1993 Common stock issued for acquisition Other common stock issuances,net of repurchases
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