股本结构

单位:万股
公告日期 2025-11-14 2025-11-14 2025-08-14 2025-08-14 2025-05-15 2025-05-15
证券总股本 1974.17 1974.29 1974.28 1973.02 1974.17 1971.82
普通股本 1974.17 1974.29 1974.28 1973.02 1974.17 1971.82
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 2025-11-10 2025-09-30 2025-08-08 2025-06-30 2025-05-01 2025-03-31
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
2025-11-14 1974.17 未披露 定期报告 2025-11-10
2025-11-14 1974.29 未披露
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From June 30, 2025 to September 30, 2025 Shares cancelled to pay tax liability Vested restricted stock issued
2025-09-30
2025-08-14 1974.28 未披露 定期报告 2025-08-08
2025-08-14 1973.02 未披露
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From March 31, 2025 to June 30, 2025 Vested restricted stock issued Shares cancelled to pay tax liability
2025-06-30
2025-05-15 1974.17 未披露 定期报告 2025-05-01
2025-05-15 1971.82 未披露
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From December 31, 2024 to March 31, 2025 Share-based compensation expense Vested restricted stock issued Shares cancelled to pay tax liability
2025-03-31
2025-03-31 1974.28 未披露 定期报告 2025-03-27
2025-03-31 1966.38 未披露
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From December 31, 2023 to December 31, 2024 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2024-12-31
2024-11-14 1963.16 未披露 定期报告 2024-11-08
2024-11-14 1965.74 未披露
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From June 30, 2024 to September 30, 2024 Vested restricted stock issued
2024-09-30
2024-08-19 1968.92 未披露 定期报告 2024-08-12
2024-09-10 1963.21 未披露 定期报告 2024-08-05
2024-08-19 1965.05 未披露
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From March 31, 2024 to June 30, 2024 Shares cancelled to pay tax liability Vested restricted stock issued
2024-06-30
2024-05-13 1968.97 未披露 定期报告 2024-05-04
2024-05-13 1964.10 未披露
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From January 1, 2024 to March 31, 2024 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2024-03-31
2024-03-28 1968.10 未披露 定期报告 2024-03-21
2024-03-28 1961.54 未披露
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From December 31, 2022 to December 31, 2023 Vested restricted stock issued Shares canceled to pay tax liability Issuance of shares for incentive plan
2023-12-31
2023-11-13 1962.42 未披露 定期报告 2023-11-01
2023-11-13 1960.45 未披露
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From June 30, 2023 to September 30, 2023 Vested restricted stock issued Shares cancelled to pay tax liability
2023-09-30
2023-08-18 1962.50 未披露 定期报告 2023-07-31
2023-08-18 1958.95 未披露
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From March 31, 2023 to June 30, 2023 Vested restricted stock issued
2023-06-30
2023-05-11 1959.65 未披露 定期报告 2023-05-08
2023-05-11 1957.63 未披露
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From January 1, 2023 to March 31, 2023 Shares cancelled to pay tax liability Share-based compensation Vested restricted stock issued
2023-03-31
2023-03-24 1961.42 未披露 定期报告 2023-03-11
2023-03-24 1947.67 未披露
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From December 31, 2021 to December 31, 2022 Issuance of shares for incentive plan Vested restricted stock issued Shares canceled to pay tax liability
2022-12-31
2022-11-02 1951.86 未披露 定期报告 2022-10-27
2022-11-02 1945.96 未披露
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From June 30, 2022 to September 30, 2022 Vested restricted stock issued Shares cancelled to pay tax liability
2022-09-30
2022-08-11 1951.49 未披露 定期报告 2022-08-01
2022-08-11 1944.36 未披露
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From March 31, 2022 to June 30, 2022 Vested restricted stock issued Shares cancelled to pay tax liability
2022-06-30
2022-05-03 1951.72 未披露 定期报告 2022-04-30
2022-05-10 1943.04 未披露
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From January 1, 2022 to March 31, 2022 Share-based compensation Shares canceled to pay tax liability Vested restricted stock issued
2022-03-31
2022-03-01 1943.35 未披露 定期报告 2022-02-09
2022-03-01 1938.33 未披露
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From December 31, 2020 to December 31, 2021 Issuance of shares for incentive plan Vested restricted stock issued Shares canceled to pay tax liability
2021-12-31
2021-11-04 1943.78 未披露 定期报告 2021-10-25
2021-11-04 1937.28 未披露
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from June 30, 2021 to September 30, 2021 Vested restricted stock issued Shares cancelled to pay tax liability
2021-09-30
2021-08-12 1944.57 未披露 定期报告 2021-07-27
2021-08-12 1936.19 未披露
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From March 31, 2021 to June 30, 2021 Vested restricted stock issued Shares cancelled to pay tax liability
2021-06-30
2021-05-03 1943.24 未披露 定期报告 2021-04-21
2021-05-03 1935.15 未披露
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from January 1, 2021 to March 31, 2021 Share-based compensation Vested restricted stock issued Shares canceled to pay tax liability
2021-03-31
2021-03-18 1938.99 未披露 定期报告 2021-03-09
2021-03-02 1936.01 未披露 定期报告 2021-01-27
2021-03-02 1931.15 未披露
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From December 31,2019 to December 31,2020 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2020-12-31
2020-11-05 1936.42 未披露 定期报告 2020-10-28
2020-11-05 1930.13 未披露
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From June 30, 2020 to September 30, 2020 Vested restricted stock issued Shares cancelled to pay tax liability
2020-09-30
2020-08-12 1936.83 未披露 定期报告 2020-07-27
2020-08-12 1929.11 未披露
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From March 31, 2020 to June 30, 2020 Vested restricted stock issued Shares cancelled to pay tax liability
2020-06-30
2020-04-23 1934.77 未披露 定期报告 2020-04-14
2020-04-23 1928.10 未披露
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From January 1, 2020 to March 31, 2020 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2020-03-31
2020-03-10 1933.41 未披露 定期报告 2020-02-28
2020-03-03 1930.18 未披露 定期报告 2020-02-10
2020-03-03 1923.81 未披露
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from December 31, 2018 to December 31, 2019 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability Stock option excercised
2019-12-31
2019-11-07 1930.78 未披露 定期报告 2019-10-22
2019-11-07 1920.25 未披露
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from June 30, 2019 to September 30, 2019 Vested restricted stock issued Shares cancelled to pay tax liability
2019-09-30
2019-08-08 1931.38 未披露 定期报告 2019-07-31
2019-08-08 1919.18 未披露
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from March 31, 2019 to June 30, 2019 Vested restricted stock issued Shares cancelled to pay tax liability
2019-06-30
2019-04-26 1929.97 未披露 定期报告 2019-04-15
2019-04-26 1918.04 未披露
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from January 1, 2019 to March 31, 2019 Share-based compensation Vested restricted stock issued Stock option exercised Shares cancelled to pay tax liability
2019-03-31
2019-03-12 1922.54 未披露 定期报告 2019-02-28
2019-03-01 1918.33 未披露 定期报告 2019-02-16
2019-03-01 1912.55 未披露
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from December 31, 2017 to December 31, 2018 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2018-12-31
2018-11-02 1918.84 未披露 定期报告 2018-10-15
2018-11-02 1911.41 未披露
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from January 1, 2018 to September 30, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2018-09-30
2018-08-09 1919.35 未披露 定期报告 2018-07-15
2018-08-09 1910.28 未披露
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from January 1, 2018 to June 30, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2018-06-30
2018-04-27 1917.83 未披露 定期报告 2018-04-10
2018-04-27 1909.13 未披露
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from January 1, 2018 to March 31, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2018-03-31
2018-03-09 1918.33 未披露 定期报告 2018-03-01
2018-02-26 1910.36 未披露 定期报告 2018-02-16
2018-02-26 1904.03 未披露
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from December 31, 2016 to December 31, 2017 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2017-12-31
2017-11-03 1910.95 未披露 定期报告 2017-10-15
2017-11-03 1903.13 未披露
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From January 1, 2017 to September 30, 2017 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2017-09-30
2017-08-11 1909.14 未披露 定期报告 2017-07-15
2017-08-11 1902.23 未披露
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From January 1, 2017 to June 30, 2017 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2017-06-30
2017-04-28 1901.24 未披露 定期报告 2017-04-15
2017-04-28 1896.76 未披露
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From January 1, 2017 to March 31, 2017 Vested restricted stock issued Shares cancelled to pay tax liability
2017-03-31
2017-02-24 1901.67 未披露 定期报告 2017-02-16
2017-02-24 1895.80 未披露
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From December 31, 2015 to December 31, 2016 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2016-12-31
2016-11-03 1902.10 未披露 定期报告 2016-10-31
2016-11-03 1894.10 未披露
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From January 1, 2016 to September 30, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2016-09-30
2016-08-11 1902.53 未披露 定期报告 2016-07-31
2016-08-11 1893.56 未披露
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From January 1, 2016 to June 30, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2016-06-30
2016-04-28 1900.38 未披露 定期报告 2016-04-20
2016-04-28 1892.89 未披露
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From January 1, 2016 to March 31, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2016-03-31
2016-02-26 1890.30 未披露 定期报告 2016-02-01
2016-02-26 1886.78 未披露
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From December 31, 2014 to December 31, 2015 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2015-12-31
2015-11-06 1890.45 未披露 定期报告 2015-10-31
2015-11-06 1886.08 未披露
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from January 1, 2015 to September 30, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2015-09-30
2015-08-07 1890.60 未披露 定期报告 2015-07-31
2015-08-07 1885.38 未披露
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from January 1, 2015 to June 30, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2015-06-30
2015-04-29 1889.58 未披露 定期报告 2015-04-15
2015-04-29 1884.68 未披露
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from January 1, 2015 to March 31, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
2015-03-31
2015-02-27 1878.88 未披露 定期报告 2015-02-01
2015-02-27 1878.51 未披露
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From December 31,2013 to December 31,2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2014-12-31
2014-11-13 1878.88 未披露 定期报告 2014-10-31
2014-11-13 1878.13 未披露
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from January 1, 2014 to September 30, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2014-09-30
2014-08-01 1877.24 未披露 定期报告 2014-07-29
2014-08-01 1877.76 未披露
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from January 1, 2014 to June 30, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2014-06-30
2014-05-02 1877.91 未披露 定期报告 2014-04-15
2014-05-02 1876.62 未披露
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From January 1, 2014 to March 31, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2014-03-31
2014-03-20 1876.77 未披露 定期报告 2014-03-01
2014-03-20 1873.74 未披露
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From December 31,2012 to December 31,2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2013-12-31
2013-11-12 1877.32 未披露 定期报告 2013-10-31
2013-11-12 1872.45 未披露
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from January 1, 2013 to September 30, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2013-09-30
2013-07-26 1877.87 未披露 定期报告 2013-07-15
2013-07-26 1871.16 未披露
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from January 1, 2013 to June 30, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2013-06-30
2013-05-02 1869.87 未披露
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from January 1, 2013 to March 31, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2013-03-31
2013-03-01 1876.35 未披露 定期报告 2013-03-01
2013-03-01 1866.41 未披露
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from December 31, 2011 to December 31, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2012-12-31
2012-10-25 1876.26 未披露 定期报告 2012-10-24
2012-10-25 1865.02 未披露
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from January 1, 2012 to September 30, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2012-09-30
2012-08-03 1876.80 未披露 定期报告 2012-08-01
2012-08-03 1863.63 未披露
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from January 1, 2012 to June 30, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2012-06-30
2012-05-04 1879.37 未披露 定期报告 2012-05-02
2012-05-04 1862.24 未披露
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Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
2012-03-31
2012-03-02 1882.68 未披露 定期报告 2012-02-27
2012-03-02 1858.30 未披露
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from December 31, 2010 to December 31, 2011 Vested restricted stock issued Shares cancelled to pay tax liability
2011-12-31
2011-11-03 1880.99 未披露 定期报告 2011-11-01
2011-11-03 1856.69 未披露
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from January 1, 2011 to September 30, 2011 Vested restricted stock issued Shares cancelled to pay tax liability
2011-09-30
2011-08-04 1883.47 未披露 定期报告 2011-08-01
2011-08-04 1854.59 未披露
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from jan 1 2011 to jun 30 2011 Vested restricted stock issued Shares cancelled to pay tax liability
2011-06-30
2011-05-05 1874.80 未披露 定期报告 2011-05-02
2011-05-05 1852.80 未披露
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Vested restricted stock issued Shares cancelled to pay tax liability
2011-03-31
2011-03-14 1878.53 未披露 定期报告 2011-03-01
2011-03-14 1851.61 未披露
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from dec 31 2009 to dec 31 2010 Issuance of stock, net of costs Vested restricted stock issued Shares cancelled to pay tax liability
2010-12-31
2010-11-02 1875.72 未披露 定期报告 2010-11-01
2010-11-02 1851.10 未披露
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from Jan 1 2010 to sep 30 2010 Issuance of stock, net of costs Vested restricted stock issued Shares cancelled to pay tax liability
2010-09-30
2010-08-04 1881.37 未披露 定期报告 2010-08-03
2010-08-04 811.23 未披露
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from Jan 1 2010 to Jun 30 2010 Vested restricted stock issued Shares cancelled to pay tax liability
2010-06-30
2010-05-11 843.29 未披露 定期报告 2010-05-03
2010-05-11 810.14 未披露
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Vested restricted stock issued Shares cancelled to pay tax liability
2010-03-31
2010-03-29 851.80 未披露 定期报告 2010-03-01
2010-03-29 808.73 未披露
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from December 31, 2008 to December 31, 2009 Vested restricted stock issued Shares cancelled to pay tax liability
2009-12-31
2009-03-31 814.20 未披露 定期报告 2009-03-20
2009-03-31 802.12 未披露
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from December 31, 2007 to December 31, 2008 Stock option exercises Vested restricted stock issued Shares cancelled to pay tax liability
2008-12-31
2008-03-17 810.34 未披露 定期报告 2008-02-29
2008-03-17 795.92 未披露
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from December 31, 2006 to December 31, 2007 Private placement of common stock Stock option exercises Vested restricted stock issued
2007-12-31
2007-03-08 756.58 未披露 定期报告 2007-02-22
2007-03-08 728.78 未披露
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from December 31, 2005 to December 31, 2006 Stock option exercises Vested restricted stock issued
2006-12-31
2006-03-14 737.86 未披露 定期报告 2006-02-10
2006-03-14 725.48 未披露
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from December 31, 2004 to December 31, 2005 Vested restricted stock issued
2005-12-31
2005-03-29 737.26 未披露 定期报告 2005-02-24
2005-03-29 722.66 未披露
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from December 31, 2003 to December 31, 2004 Vested restricted stock issued
2004-12-31
2004-03-25 729.58 未披露 定期报告 2004-02-13
2000-03-24 719.58 未披露 定期报告 1999-12-31
1999-03-26 718.85 未披露
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All references to shares outstanding and per share amounts for prior periods have been restated to reflect the four-for-one split of the Company's common stock that was effected on May 1, 1998.
1998-05-04
From June 30, 2025 to September 30, 2025 Shares cancelled to pay tax liability Vested restricted stock issued
From March 31, 2025 to June 30, 2025 Vested restricted stock issued Shares cancelled to pay tax liability
From December 31, 2024 to March 31, 2025 Share-based compensation expense Vested restricted stock issued Shares cancelled to pay tax liability
From December 31, 2023 to December 31, 2024 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From June 30, 2024 to September 30, 2024 Vested restricted stock issued
From March 31, 2024 to June 30, 2024 Shares cancelled to pay tax liability Vested restricted stock issued
From January 1, 2024 to March 31, 2024 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From December 31, 2022 to December 31, 2023 Vested restricted stock issued Shares canceled to pay tax liability Issuance of shares for incentive plan
From June 30, 2023 to September 30, 2023 Vested restricted stock issued Shares cancelled to pay tax liability
From March 31, 2023 to June 30, 2023 Vested restricted stock issued
From January 1, 2023 to March 31, 2023 Shares cancelled to pay tax liability Share-based compensation Vested restricted stock issued
From December 31, 2021 to December 31, 2022 Issuance of shares for incentive plan Vested restricted stock issued Shares canceled to pay tax liability
From June 30, 2022 to September 30, 2022 Vested restricted stock issued Shares cancelled to pay tax liability
From March 31, 2022 to June 30, 2022 Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2022 to March 31, 2022 Share-based compensation Shares canceled to pay tax liability Vested restricted stock issued
From December 31, 2020 to December 31, 2021 Issuance of shares for incentive plan Vested restricted stock issued Shares canceled to pay tax liability
from June 30, 2021 to September 30, 2021 Vested restricted stock issued Shares cancelled to pay tax liability
From March 31, 2021 to June 30, 2021 Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2021 to March 31, 2021 Share-based compensation Vested restricted stock issued Shares canceled to pay tax liability
From December 31,2019 to December 31,2020 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From June 30, 2020 to September 30, 2020 Vested restricted stock issued Shares cancelled to pay tax liability
From March 31, 2020 to June 30, 2020 Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2020 to March 31, 2020 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2018 to December 31, 2019 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability Stock option excercised
from June 30, 2019 to September 30, 2019 Vested restricted stock issued Shares cancelled to pay tax liability
from March 31, 2019 to June 30, 2019 Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2019 to March 31, 2019 Share-based compensation Vested restricted stock issued Stock option exercised Shares cancelled to pay tax liability
from December 31, 2017 to December 31, 2018 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2018 to September 30, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2018 to June 30, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2018 to March 31, 2018 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2016 to December 31, 2017 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2017 to September 30, 2017 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2017 to June 30, 2017 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2017 to March 31, 2017 Vested restricted stock issued Shares cancelled to pay tax liability
From December 31, 2015 to December 31, 2016 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2016 to September 30, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2016 to June 30, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2016 to March 31, 2016 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From December 31, 2014 to December 31, 2015 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2015 to September 30, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2015 to June 30, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2015 to March 31, 2015 Share-based compensation Vested restricted stock issued Shares cancelled to pay tax liability
From December 31,2013 to December 31,2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2014 to September 30, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2014 to June 30, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From January 1, 2014 to March 31, 2014 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
From December 31,2012 to December 31,2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2013 to September 30, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2013 to June 30, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2013 to March 31, 2013 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2011 to December 31, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2012 to September 30, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2012 to June 30, 2012 Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
Issuance of shares for incentive plan Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2010 to December 31, 2011 Vested restricted stock issued Shares cancelled to pay tax liability
from January 1, 2011 to September 30, 2011 Vested restricted stock issued Shares cancelled to pay tax liability
from jan 1 2011 to jun 30 2011 Vested restricted stock issued Shares cancelled to pay tax liability
Vested restricted stock issued Shares cancelled to pay tax liability
from dec 31 2009 to dec 31 2010 Issuance of stock, net of costs Vested restricted stock issued Shares cancelled to pay tax liability
from Jan 1 2010 to sep 30 2010 Issuance of stock, net of costs Vested restricted stock issued Shares cancelled to pay tax liability
from Jan 1 2010 to Jun 30 2010 Vested restricted stock issued Shares cancelled to pay tax liability
Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2008 to December 31, 2009 Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2007 to December 31, 2008 Stock option exercises Vested restricted stock issued Shares cancelled to pay tax liability
from December 31, 2006 to December 31, 2007 Private placement of common stock Stock option exercises Vested restricted stock issued
from December 31, 2005 to December 31, 2006 Stock option exercises Vested restricted stock issued
from December 31, 2004 to December 31, 2005 Vested restricted stock issued
from December 31, 2003 to December 31, 2004 Vested restricted stock issued
All references to shares outstanding and per share amounts for prior periods have been restated to reflect the four-for-one split of the Company's common stock that was effected on May 1, 1998.