股本结构

单位:万股
公告日期 2021-10-21 2021-10-26 2021-09-10 2021-07-29 2021-07-29 2021-04-30
证券总股本 2663.09 2618.94 2662.88 2662.94 2618.28 2663.56
普通股本 2663.09 2618.94 2662.88 2662.94 2618.28 2663.56
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 2021-10-20 2021-09-30 2021-09-02 2021-07-28 2021-06-30 2021-04-16
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
2021-10-21 2663.09 未披露 定期报告 2021-10-20
2021-10-26 2618.94 未披露
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From June 30, 2021 to September 30, 2021 Common stock issued for vesting of restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock and restricted stock units
2021-09-30
2021-09-10 2662.88 未披露 定期报告 2021-09-02
2021-07-29 2662.94 未披露 定期报告 2021-07-28
2021-07-29 2618.28 未披露
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From March 31, 2021 to June 30, 2021 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2021-06-30
2021-04-30 2663.56 未披露 定期报告 2021-04-16
2021-04-29 2617.88 未披露
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From December 31, 2020 to March 31, 2021 Exercise of stock options Common stock issued for vesting of restricted stock and restricted stock units Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common stock issued for vested performance shares
2021-03-31
2021-02-26 2660.81 未披露 定期报告 2021-02-25
2021-02-26 2596.47 未披露
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From December 31, 2019 to December 31, 2020 Exercise of stock options Common stock issued for vesting of restricted stock and restricted stock units Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
2020-12-31
2020-10-29 2660.80 未披露 定期报告 2020-10-28
2020-10-29 2595.15 未披露
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From June 30, 2020 to September 30, 2020 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2020-09-30
2020-07-29 2660.97 未披露 定期报告 2020-07-28
2020-07-29 2594.21 未披露
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From March 31, 2020 to June 30, 2020 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2020-06-30
2020-04-23 2661.47 未披露 定期报告 2020-04-22
2020-04-24 2661.47 未披露 定期报告 2020-04-17
2020-04-23 2593.66 未披露
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From December 31, 2019 to March 31, 2020 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
2020-03-31
2020-02-28 2680.95 未披露 定期报告 2020-02-27
2020-02-28 2622.98 未披露
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from December 31, 2018 to December 31, 2019 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
2019-12-31
2019-10-25 2729.48 未披露 定期报告 2019-10-23
2019-10-25 2640.10 未披露
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from June 30, 2019 to September 30, 2019 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2019-09-30
2019-07-25 2728.24 未披露 定期报告 2019-07-24
2019-07-25 2639.66 未披露
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from March 31, 2019 to June 30, 2019 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2019-06-30
2019-04-25 2789.70 未披露 定期报告 2019-04-24
2019-04-30 2792.15 未披露 定期报告 2019-04-18
2019-04-25 2709.48 未披露
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from December 31, 2018 to March 31, 2019 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
2019-03-31
2019-02-22 2781.81 未披露 定期报告 2019-02-21
2019-02-22 2739.78 未披露
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from December 31, 2017 to December 31, 2018 Purchases of treasury stock Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition
2018-12-31
2018-10-25 2854.73 未披露 定期报告 2018-10-24
2018-10-25 2780.16 未披露
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from December 31, 2017 to September 30, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
2018-09-30
2018-07-26 2854.81 未披露 定期报告 2018-07-25
2018-07-26 2771.66 未披露
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from December 31, 2017 to June 30, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
2018-06-30
2018-04-26 2837.07 未披露 定期报告 2018-04-25
2018-04-27 2838.56 未披露 定期报告 2018-04-20
2018-04-26 2750.82 未披露
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from December 31, 2017 to March 31, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
2018-03-31
2018-02-27 2802.46 未披露 定期报告 2018-02-23
2018-02-27 2724.12 未披露
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from December 31, 2016 to December 31, 2017 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
2017-12-31
2017-10-26 2790.76 未披露 定期报告 2017-10-25
2017-10-26 2713.30 未披露
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From December 31, 2016 to September 30, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2017-09-30
2017-07-28 2853.46 未披露 定期报告 2017-07-27
2017-07-28 2776.01 未披露
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From December 31, 2016 to June 30, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2017-06-30
2017-04-27 2914.61 未披露 定期报告 2017-04-26
2017-05-01 2912.36 未披露 定期报告 2017-04-21
2017-04-27 2824.25 未披露
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From December 31, 2016 to March 31, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2017-03-31
2017-02-24 2907.61 未披露 定期报告 2017-02-23
2017-02-24 2813.15 未披露
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From December 31, 2015 to December 31, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2016-12-31
2016-10-27 2922.63 未披露 定期报告 2016-10-26
2016-10-27 2863.52 未披露
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From December 31, 2015 to September 30, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2016-09-30
2016-07-28 2930.61 未披露 定期报告 2016-07-27
2016-07-28 2865.20 未披露
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From December 31, 2015 to June 30, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2016-06-30
2016-04-29 3013.72 未披露 定期报告 2016-04-28
2016-04-29 3013.75 未披露 定期报告 2016-04-22
2016-04-29 2899.27 未披露
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From December 31, 2015 to March 31, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
2016-03-31
2016-02-26 3004.14 未披露 定期报告 2016-02-25
2016-02-26 2972.76 未披露
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from December 31, 2014 to December 31, 2015 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common stock issued from Equity Offering Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition Purchases of treasury stock
2015-12-31
2015-10-30 3094.44 未披露 定期报告 2015-10-28
2015-10-30 2973.91 未披露
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from December 31, 2014 to September 30, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common stock issued from equity offering, net of underwriting discounts and commissions Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
2015-09-30
2015-08-07 3091.61 未披露 定期报告 2015-08-06
2015-08-07 2969.72 未披露
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from December 31, 2014 to June 30, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common stock issued from equity offering, net of underwriting discounts and commissions Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
2015-06-30
2015-05-08 2887.50 未披露
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On April 29, 2015, Echo entered into an underwriting agreement (the “Common Stock Underwriting Agreement”) with Morgan Stanley & Co. LLC and Credit Suisse Securities (USA) LLC, as managers of the several underwriters named in Schedule II thereto (collectively, the “Common Stock Underwriters”), pursuant to which Echo agreed to sell and the Common Stock Underwriters agreed to purchase, upon the terms and subject to the conditions set forth therein, 5,000,000 shares of Echo common stock in a registered public offering.
2015-05-07
2015-04-27 2386.70 未披露 定期报告 2015-04-20
2015-05-08 2341.56 未披露
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from December 31, 2014 to March 31, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
2015-03-31
2015-02-26 2382.59 未披露 定期报告 2015-02-25
2015-02-26 2320.71 未披露
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from December 31,2013 to December 31,2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2014-12-31
2014-10-30 2374.72 未披露 定期报告 2014-10-29
2014-10-30 2306.68 未披露
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from December 31, 2013 to September 30, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2014-09-30
2014-07-31 2370.01 未披露 定期报告 2014-07-30
2014-07-31 2302.40 未披露
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from December 31, 2013 to June 30, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2014-06-30
2014-04-30 2348.74 未披露 定期报告 2014-04-21
2014-05-01 2300.53 未披露
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from December 31, 2013 to March 31, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2014-03-31
2014-02-28 2349.35 未披露 定期报告 2014-02-27
2014-02-28 2290.05 未披露
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from December 31,2012 to December 31,2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2013-12-31
2013-11-01 2346.85 未披露 定期报告 2013-10-31
2013-11-01 2289.68 未披露
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from December 31, 2012 to September 30, 2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2013-09-30
2013-08-02 2348.83 未披露 定期报告 2013-08-01
2013-08-02 2288.12 未披露
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from December 31, 2012 to June 30, 2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2013-06-30
2013-05-03 2331.20 未披露 定期报告 2013-05-02
2013-05-03 2284.37 未披露
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from December 31,2012 to March 31,2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2013-03-31
2013-03-15 2331.05 未披露 定期报告 2013-03-13
2013-03-15 2269.48 未披露
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from December 31, 2011 to December 31, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition
2012-12-31
2012-11-01 2316.30 未披露 定期报告 2012-10-31
2012-11-01 2238.95 未披露
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From December 31, 2011 to September 30, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2012-09-30
2012-08-02 2288.29 未披露 定期报告 2012-07-31
2012-08-02 2233.79 未披露
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from December 31, 2011 to June 30, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
2012-06-30
2012-05-03 2275.02 未披露 定期报告 2012-05-01
2012-05-03 2219.33 未披露
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from Dec 31,2011 to Mar 31,2012 Exercise of stock options Common stock issued for vested restricted stock vesting of restricted stock
2012-03-31
2012-03-07 2233.54 未披露 定期报告 2012-03-05
2012-03-07 2215.59 未披露
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from December 31, 2010 to December 31, 2011 Exercise of stock options
2011-12-31
2011-11-04 2215.42 未披露 定期报告 2011-11-04
2011-11-04 2215.42 未披露
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from December 31, 2010 to September 30, 2011 Exercise of stock options
2011-09-30
2011-08-02 2215.24 未披露 定期报告 2011-08-02
2011-08-02 2214.79 未披露
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From Dec 31 2010 to Jun 30 2011 Exercise of stock options
2011-06-30
2011-05-05 2213.05 未披露 定期报告 2011-05-04
2011-05-05 2211.59 未披露
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Exercise of stock options
2011-03-31
2011-03-11 2236.14 未披露 定期报告 2011-03-10
2011-03-11 2204.39 未披露
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Tax benefit from exercise of stock options
2010-12-31
2010-11-08 2195.88 未披露
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Exercise of stock options
2010-09-30
2010-08-13 2184.22 未披露
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Exercise of stock options
2010-06-30
2010-05-14 2180.65 未披露 定期报告 2010-05-14
2010-05-14 2176.95 未披露
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Exercise of stock options
2010-03-31
From June 30, 2021 to September 30, 2021 Common stock issued for vesting of restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock and restricted stock units
From March 31, 2021 to June 30, 2021 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
From December 31, 2020 to March 31, 2021 Exercise of stock options Common stock issued for vesting of restricted stock and restricted stock units Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common stock issued for vested performance shares
From December 31, 2019 to December 31, 2020 Exercise of stock options Common stock issued for vesting of restricted stock and restricted stock units Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
From June 30, 2020 to September 30, 2020 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
From March 31, 2020 to June 30, 2020 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
From December 31, 2019 to March 31, 2020 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
from December 31, 2018 to December 31, 2019 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
from June 30, 2019 to September 30, 2019 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from March 31, 2019 to June 30, 2019 Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2018 to March 31, 2019 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
from December 31, 2017 to December 31, 2018 Purchases of treasury stock Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition
from December 31, 2017 to September 30, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
from December 31, 2017 to June 30, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
from December 31, 2017 to March 31, 2018 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
from December 31, 2016 to December 31, 2017 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Purchases of treasury stock
From December 31, 2016 to September 30, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2016 to June 30, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2016 to March 31, 2017 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2015 to December 31, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2015 to September 30, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2015 to June 30, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
From December 31, 2015 to March 31, 2016 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Purchases of treasury stock
from December 31, 2014 to December 31, 2015 Exercise of stock options Common stock issued for vesting of restricted stock Common stock issued for vesting of performance shares Common stock issued from Equity Offering Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition Purchases of treasury stock
from December 31, 2014 to September 30, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common stock issued from equity offering, net of underwriting discounts and commissions Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
from December 31, 2014 to June 30, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common stock issued from equity offering, net of underwriting discounts and commissions Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards Common shares issued for acquisition
On April 29, 2015, Echo entered into an underwriting agreement (the “Common Stock Underwriting Agreement”) with Morgan Stanley & Co. LLC and Credit Suisse Securities (USA) LLC, as managers of the several underwriters named in Schedule II thereto (collectively, the “Common Stock Underwriters”), pursuant to which Echo agreed to sell and the Common Stock Underwriters agreed to purchase, upon the terms and subject to the conditions set forth therein, 5,000,000 shares of Echo common stock in a registered public offering.
from December 31, 2014 to March 31, 2015 Exercise of stock options Common stock issued for vested restricted stock Common stock issued for vested performance shares Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards
from December 31,2013 to December 31,2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2013 to September 30, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2013 to June 30, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2013 to March 31, 2014 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31,2012 to December 31,2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2012 to September 30, 2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2012 to June 30, 2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31,2012 to March 31,2013 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2011 to December 31, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock Common shares issued for acquisition
From December 31, 2011 to September 30, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from December 31, 2011 to June 30, 2012 Exercise of stock options Common stock issued for vested restricted stock Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock
from Dec 31,2011 to Mar 31,2012 Exercise of stock options Common stock issued for vested restricted stock vesting of restricted stock
from December 31, 2010 to December 31, 2011 Exercise of stock options
from December 31, 2010 to September 30, 2011 Exercise of stock options
From Dec 31 2010 to Jun 30 2011 Exercise of stock options
Exercise of stock options
Tax benefit from exercise of stock options
Exercise of stock options
Exercise of stock options
Exercise of stock options