股本结构
单位:万股
| 公告日期 | 2025-08-11 | 2025-05-09 | 2025-03-31 | 2025-02-26 | 2025-02-26 | 2024-08-08 |
|---|---|---|---|---|---|---|
| 证券总股本 | 5983.03 | 6175.19 | 6192.48 | 6187.22 | 6185.04 | 6180.78 |
| 普通股本 | 5983.03 | 6175.19 | 6192.48 | 6187.22 | 6185.04 | 6180.78 |
| 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 | 2025-06-30 | 2025-05-01 | 2025-03-04 | 2025-02-07 | 2024-12-31 | 2024-06-30 |
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 |
|---|---|---|---|---|
| 2025-08-11 | 5983.03 | 未披露 |
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From March 31, 2025 to June 30, 2025
Repurchases of common stock, 2,113,007 shares
Common stock issued for stock-based compensation, including tax effects, 18,527 shares
|
2025-06-30 |
| 2025-05-09 | 6175.19 | 未披露 | 定期报告 | 2025-05-01 |
| 2025-03-31 | 6192.48 | 未披露 | 定期报告 | 2025-03-04 |
| 2025-02-26 | 6187.22 | 未披露 | 定期报告 | 2025-02-07 |
| 2025-02-26 | 6185.04 | 未披露 |
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From December 31, 2023 to December 31, 2024
Repurchases of common stock, 1,787,810 shares
Equity compensation activity, 193,563 shares
|
2024-12-31 |
| 2024-08-08 | 6180.78 | 未披露 |
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From March 31, 2024 to June 30, 2024
Repurchases of common stock, 1,619,992 shares
Equity compensation activity, 14,962 shares
|
2024-06-30 |
| 2024-04-03 | 6341.28 | 未披露 | 定期报告 | 2024-03-25 |
| 2024-02-26 | 6346.87 | 未披露 | 定期报告 | 2024-02-09 |
| 2024-02-26 | 6344.47 | 未披露 |
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From December 31, 2022 to December 31, 2023
Equity compensation activity, 221,678 shares
|
2023-12-31 |
| 2023-11-08 | 6339.49 | 未披露 | 定期报告 | 2023-11-06 |
| 2023-11-08 | 6339.05 | 未披露 |
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From June 30, 2023 to September 30, 2023
Equity compensation activity, 1,020 shares
|
2023-09-30 |
| 2023-08-08 | 6339.03 | 未披露 | 定期报告 | 2023-08-07 |
| 2023-08-08 | 6338.95 | 未披露 |
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From March 31, 2023 to June 30, 2023
Equity compensation activity, 12,562 shares
|
2023-06-30 |
| 2023-04-03 | 6337.69 | 未披露 | 定期报告 | 2023-03-20 |
| 2023-02-27 | 6324.89 | 未披露 | 定期报告 | 2023-02-09 |
| 2023-02-27 | 6322.30 | 未披露 |
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From December 31, 2021 to December 31, 2022
Purchase of 2,710,304 shares of common stock
Equity compensation activity, 143,195 shares
|
2022-12-31 |
| 2022-11-04 | 6320.21 | 未披露 |
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From June 30, 2022 to September 30, 2022
Equity compensation activity, 1,692 shares
Purchases of 215,204 shares of common stock
|
2022-09-30 |
| 2022-08-08 | 6341.80 | 未披露 | 定期报告 | 2022-08-04 |
| 2022-08-08 | 6341.56 | 未披露 |
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From March 31, 2022 to June 30, 2022
Purchases of 1,650,000 shares of common stock
Equity compensation activity, 7,802 shares
|
2022-06-30 |
| 2022-04-01 | 6505.78 | 未披露 | 定期报告 | 2022-03-21 |
| 2022-02-28 | 6580.31 | 未披露 | 定期报告 | 2022-02-07 |
| 2022-02-28 | 6579.01 | 未披露 |
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From December 31, 2020 to December 31, 2021
Purchase of 2,297,911 shares of common stock
Equity compensation activity, 156,297 shares
|
2021-12-31 |
| 2021-11-09 | 6688.43 | 未披露 |
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From June 30, 2021 to September 30, 2021
Purchases of 1,049,120 shares of common stock
Equity compensation activity, 1,498 shares
|
2021-09-30 |
| 2021-08-05 | 6793.19 | 未披露 |
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From March 31, 2021 to June 30, 2021
Equity compensation activity, 13,725 shares
|
2021-06-30 |
| 2021-05-06 | 6791.81 | 未披露 | 定期报告 | 2021-03-22 |
| 2021-02-24 | 6800.96 | 未披露 | 定期报告 | 2021-02-08 |
| 2021-02-24 | 6793.17 | 未披露 |
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From December 31,2019 to December 31,2020
Purchase of 1,482,992 shares of common stock
Equity compensation activity,170,193 shares
|
2020-12-31 |
| 2020-11-05 | 6909.79 | 未披露 |
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From June 30, 2020 to September 30, 2020
Equity compensation activity,893 shares
|
2020-09-30 |
| 2020-08-06 | 6909.70 | 未披露 |
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from March 31,2020 to May 29,2020
Equity compensation activity, 10,297 shares
|
2020-05-29 |
| 2020-05-07 | 6908.67 | 未披露 |
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from December 31, 2019 to March 23, 2020
Purchases of 282,992 shares of common stock
Equity compensation activity, 125,203 shares
|
2020-03-23 |
| 2020-02-27 | 6935.08 | 未披露 | 定期报告 | 2020-02-10 |
| 2020-02-27 | 6924.45 | 未披露 |
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from December 31, 2018 to December 31, 2019
Purchase of 1,300,000 shares of common stock
Equity compensation activity, 102,552 shares
|
2019-12-31 |
| 2019-11-06 | 6920.47 | 未披露 |
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from June 30, 2019 to September 30, 2019
Equity compensation activity, 9,712 shares
|
2019-09-30 |
| 2019-08-07 | 6919.50 | 未披露 |
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from March 31, 2019 to June 30, 2019
Purchases of 600,000 shares of common stock
Equity compensation activity, 6,901 shares
|
2019-06-30 |
| 2019-05-08 | 6988.81 | 未披露 |
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from December 31, 2018 to March 25, 2019
Purchases of 600,000 shares of common stock
Equity compensation activity, 46,129 shares
|
2019-03-25 |
| 2019-03-01 | 7048.81 | 未披露 | 定期报告 | 2019-02-11 |
| 2019-03-01 | 7044.20 | 未披露 |
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from December 31, 2017 to December 31, 2018
Purchases of 2,077,101 shares of common stock
Equity compensation activity, 109,852 shares
|
2018-12-31 |
| 2018-11-01 | 7119.43 | 未披露 | 定期报告 | 2018-09-30 |
| 2018-08-03 | 7163.67 | 未披露 | 定期报告 | 2018-07-31 |
| 2018-08-03 | 7183.15 | 未披露 | 定期报告 | 2018-06-30 |
| 2018-05-03 | 7230.08 | 未披露 | 定期报告 | 2018-04-30 |
| 2018-04-05 | 7245.42 | 未披露 | 定期报告 | 2018-03-19 |
| 2018-02-27 | 7245.25 | 未披露 | 定期报告 | 2018-02-16 |
| 2018-02-27 | 7240.92 | 未披露 |
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from December 31, 2016 to December 31, 2017
Equity compensation activity, 242,253 shares
|
2017-12-31 |
| 2017-11-02 | 7233.70 | 未披露 | 定期报告 | 2017-10-31 |
| 2017-10-19 | 7233.45 | 未披露 | 定期报告 | 2017-09-30 |
| 2017-08-02 | 7227.32 | 未披露 | 定期报告 | 2017-07-31 |
| 2017-07-24 | 7224.99 | 未披露 | 定期报告 | 2017-06-30 |
| 2017-04-06 | 7221.98 | 未披露 | 定期报告 | 2017-03-20 |
| 2017-02-23 | 7219.27 | 未披露 | 定期报告 | 2017-02-17 |
| 2017-02-23 | 7216.70 | 未披露 |
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From December 31, 2015 to December 31, 2016
Equity compensation activity, 168,219 shares, including excess tax benefits
|
2016-12-31 |
| 2016-10-20 | 7206.12 | 未披露 | 定期报告 | 2016-09-30 |
| 2016-07-21 | 7205.02 | 未披露 | 定期报告 | 2016-06-30 |
| 2016-04-07 | 7204.37 | 未披露 | 定期报告 | 2016-03-21 |
| 2016-02-26 | 7204.23 | 未披露 | 定期报告 | 2016-02-18 |
| 2016-02-26 | 7199.88 | 未披露 |
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From December 31, 2014 to December 31, 2015
Purchases of 225,000 shares of common stock
Equity compensation activity, 185,382 shares, including excess tax benefits
|
2015-12-31 |
| 2015-10-20 | 7189.29 | 未披露 | 定期报告 | 2015-09-30 |
| 2015-08-03 | 7189.22 | 未披露 | 定期报告 | 2015-07-31 |
| 2015-07-20 | 7188.28 | 未披露 | 定期报告 | 2015-06-30 |
| 2015-05-04 | 7188.12 | 未披露 | 定期报告 | 2015-04-30 |
| 2015-04-06 | 7210.27 | 未披露 | 定期报告 | 2015-03-23 |
| 2015-02-25 | 7208.79 | 未披露 | 定期报告 | 2015-02-19 |
| 2015-02-25 | 7203.84 | 未披露 |
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from December 31, 2013 to December 31, 2014
Purchases of 1,200,000 shares of common stock
Equity compensation activity, 524,448 shares, including excess tax benefits
|
2014-12-31 |
| 2014-11-03 | 7186.36 | 未披露 | 定期报告 | 2014-10-31 |
| 2014-10-20 | 7175.66 | 未披露 | 定期报告 | 2014-09-30 |
| 2014-08-04 | 7185.56 | 未披露 | 定期报告 | 2014-07-31 |
| 2014-07-21 | 7195.02 | 未披露 | 定期报告 | 2014-06-30 |
| 2014-05-05 | 7221.00 | 未披露 | 定期报告 | 2014-05-01 |
| 2014-04-07 | 7238.93 | 未披露 | 定期报告 | 2014-03-24 |
| 2014-02-25 | 7282.73 | 未披露 | 定期报告 | 2014-02-19 |
| 2014-02-25 | 7271.39 | 未披露 |
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from December 31, 2012 to December 31, 2013
Purchases of 821,091 shares of common stock
Equity compensation activity, 288,413 shares, including excess tax benefits
|
2013-12-31 |
| 2013-10-17 | 7251.99 | 未披露 | 定期报告 | 2013-09-30 |
| 2013-08-05 | 7271.99 | 未披露 | 定期报告 | 2013-07-31 |
| 2013-07-22 | 7269.27 | 未披露 | 定期报告 | 2013-06-30 |
| 2013-05-02 | 7327.21 | 未披露 | 定期报告 | 2013-03-31 |
| 2013-04-09 | 7327.02 | 未披露 | 定期报告 | 2013-03-25 |
| 2013-02-25 | 7326.53 | 未披露 | 定期报告 | 2013-02-15 |
| 2013-02-25 | 7324.66 | 未披露 |
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from December 31, 2011 to December 31, 2012
Stock-based compensation activity, 399,022 shares, including excess tax benefits
|
2012-12-31 |
| 2012-08-06 | 7288.33 | 未披露 | 定期报告 | 2012-07-31 |
| 2012-07-19 | 7286.96 | 未披露 | 定期报告 | 2012-06-30 |
| 2012-05-07 | 7285.74 | 未披露 | 定期报告 | 2012-03-31 |
| 2012-02-27 | 7285.69 | 未披露 | 定期报告 | 2012-02-15 |
| 2012-02-27 | 7284.76 | 未披露 |
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from December 31, 2010 to December 31, 2011
Exercise of stock options, 202,578 shares, including excess tax benefits
|
2011-12-31 |
| 2011-11-07 | 7283.35 | 未披露 | 定期报告 | 2011-10-31 |
| 2011-10-19 | 7282.97 | 未披露 | 定期报告 | 2011-09-30 |
| 2011-07-21 | 7280.51 | 未披露 | 定期报告 | 2011-06-30 |
| 2011-05-05 | 7279.69 | 未披露 | 定期报告 | 2011-04-29 |
| 2011-05-05 | 7276.87 | 未披露 | 定期报告 | 2011-03-31 |
| 2011-03-01 | 7272.13 | 未披露 | 定期报告 | 2011-02-16 |
| 2011-03-01 | 7264.50 | 未披露 |
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from dec 31 2009 to dec 31 2010
Exercise of stock options, 748,486 shares, including excess tax benefits
|
2010-12-31 |
| 2010-11-04 | 7262.80 | 未披露 | 定期报告 | 2010-09-30 |
| 2010-08-05 | 7262.29 | 未披露 | 定期报告 | 2010-07-30 |
| 2010-08-05 | 7234.85 | 未披露 | 定期报告 | 2010-06-30 |
| 2010-05-04 | 7234.01 | 未披露 | 定期报告 | 2010-04-30 |
| 2010-05-04 | 7207.31 | 未披露 | 定期报告 | 2010-03-31 |
| 2010-02-26 | 7203.92 | 未披露 | 定期报告 | 2010-02-16 |
| 2010-02-26 | 7189.65 | 未披露 |
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from December 31, 2008 to December 31, 2009
Exercise of stock options, 320,245 shares, including excess tax benefits
|
2009-12-31 |
| 2009-03-02 | 7157.64 | 未披露 | 定期报告 | 2009-02-17 |
| 2009-03-02 | 7157.63 | 未披露 |
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from December 31, 2007 to December 31, 2008
Exercise of stock options, 1,453,078 shares, including excess tax benefits
Purchases of 250,000 shares of common stock
|
2008-12-31 |
| 2008-02-25 | 7063.05 | 未披露 | 定期报告 | 2008-02-15 |
| 2008-02-25 | 7037.32 | 未披露 |
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from December 31, 2006 to December 31, 2007
Exercise of stock options, 1,033,892 shares, including excess tax benefits
Purchases of 6,000,000 shares of common stock
|
2007-12-31 |
| 2007-02-14 | 7535.01 | 未披露 | 定期报告 | 2007-02-09 |
| 2007-02-14 | 7533.93 | 未披露 |
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from December 31, 2005 to December 31, 2006
Exercise of stock options, 418,854 shares, including excess tax benefits
Purchases of 4,500,000 shares of common stock
|
2006-12-31 |
| 2006-02-14 | 7976.48 | 未披露 | 定期报告 | 2006-02-10 |
| 2006-02-14 | 7942.04 | 未披露 |
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from December 31, 2004 to December 31, 2005
Exercise of stock options, 310,696 shares, including tax benefits
Purchases of 88,000 shares of common stock
|
2005-12-31 |
| 2005-02-15 | 7939.62 | 未披露 | 定期报告 | 2005-02-10 |
| 2005-02-15 | 7919.77 | 未披露 |
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from December 31, 2003 to December 31, 2004
Exercise of stock options, 656,676 shares, including tax benefits
Purchases of 1,173,200 shares of common stock
|
2004-12-31 |
| 2004-03-01 | 7954.47 | 未披露 | 定期报告 | 2004-02-29 |
| 2004-03-01 | 7971.43 | 未披露 |
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from December 31, 2002 to December 31, 2003
Exercise of stock options, 752,591 shares, including tax benefits
Purchases of 764,500 shares of common stock
On September 2, 2003, the Company announced that its Board of Directors declared a five-for-four split of the Company's common stock effected in the form of a 25 percent stock dividend. The stock dividend was paid on September 30,2003,to stockholders of record at the close of business on September 16,2003.
|
2003-12-31 |
| 2003-02-28 | 6375.60 | 未披露 | 定期报告 | 2003-01-31 |
| 2003-02-28 | 6378.13 | 未披露 |
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from December 31, 2001 to December 31, 2002
Purchases of 213,700 shares of common stock
Exercise of stock options,358,806 shares, including tax benefits
|
2002-12-31 |
| 2002-03-22 | 6385.74 | 未披露 | 定期报告 | 2002-02-28 |
| 2002-03-22 | 6363.68 | 未披露 |
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from December 31, 2000 to December 31, 2001
Exercise of stock options, 917,770 shares, including tax benefits
On February 11, 2002, the Company announced that its Board of Directors declared a four-for-three split of the Company's common stock effected in the form of a 33 1/3 percent stock dividend. The stock dividend was payable on March 14, 2002, to stockholders of record at the close of business on February 25, 2002.
|
2001-12-31 |
| 2001-03-23 | 4708.95 | 未披露 | 定期报告 | 2001-02-28 |
| 2001-03-23 | 4703.93 | 未披露 |
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from December 31, 1999 to December 31, 2000
Purchases of 225,201 shares of common stock
Exercise of stock options,59,255 shares
|
2000-12-31 |
| 2000-03-28 | 4704.20 | 未披露 | 定期报告 | 2000-02-29 |
| 2000-03-28 | 4720.52 | 未披露 |
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from December 31, 1998 to December 31, 1999
Purchases of 302,600 shares of common stock
Exercise of stock options, 198,526 shares
|
1999-12-31 |
| 1999-03-24 | 4733.34 | 未披露 | 定期报告 | 1999-03-15 |
| 1999-03-24 | 4730.93 | 未披露 |
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from December 31, 1997 to December 31, 1998
Five-for-four stock split
Purchases of 592,600 shares of common stock
Exercise of stock options, 119,391 shares
|
1998-12-31 |
| 1998-03-31 | 3828.22 | 未披露 | 定期报告 | 1998-03-16 |
| 1998-03-31 | 3822.61 | 未披露 |
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from December 31, 1996 to December 31, 1997
Purchases of 126,500 shares of common stock
Exercise of stock options, 364,556 shares
|
1997-12-31 |
| 1997-03-28 | 3799.39 | 未披露 | 定期报告 | 1997-03-14 |
| 1997-03-28 | 3798.81 | 未披露 |
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from December 31, 1995 to December 31, 1996
Three-for-two stock split
Exercise of stock options, 216,886 shares
|
1996-12-31 |
| 1996-03-28 | 2519.19 | 未披露 | 定期报告 | 1996-03-15 |
| 1996-03-28 | 2518.08 | 未披露 |
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from December 31, 1994 to December 31, 1995
Purchases of 50,000 shares of common stock
Exercise of stock options, 24,000 shares
|
1995-12-31 |
| 1995-03-27 | 2517.76 | 未披露 | 定期报告 | 1995-03-14 |
| 1995-03-27 | 2520.68 | 未披露 |
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from December 31, 1993 to December 31, 1994
Purchases of 128,600 shares of common stock
Exercise of stock options,12,700 shares
|
1994-12-31 |
| 1994-05-27 | 2533.40 | 未披露 |
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from February 28, 1993 to February 28, 1994
Proceeds from offering of 2,300,000 shares of common stock, net of related expenses
Exercise of stock options,152,400 shares
|
1994-02-28 |
| 1994-05-27 | 2288.16 | 未披露 |
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from February 28, 1992 to February 28, 1993
Two-for-one stock split
Exercise of stock options 90,600 shares
|
1993-02-28 |
From March 31, 2025 to June 30, 2025
Repurchases of common stock, 2,113,007 shares
Common stock issued for stock-based compensation, including tax effects, 18,527 shares
From December 31, 2023 to December 31, 2024
Repurchases of common stock, 1,787,810 shares
Equity compensation activity, 193,563 shares
From March 31, 2024 to June 30, 2024
Repurchases of common stock, 1,619,992 shares
Equity compensation activity, 14,962 shares
From December 31, 2022 to December 31, 2023
Equity compensation activity, 221,678 shares
From June 30, 2023 to September 30, 2023
Equity compensation activity, 1,020 shares
From March 31, 2023 to June 30, 2023
Equity compensation activity, 12,562 shares
From December 31, 2021 to December 31, 2022
Purchase of 2,710,304 shares of common stock
Equity compensation activity, 143,195 shares
From June 30, 2022 to September 30, 2022
Equity compensation activity, 1,692 shares
Purchases of 215,204 shares of common stock
From March 31, 2022 to June 30, 2022
Purchases of 1,650,000 shares of common stock
Equity compensation activity, 7,802 shares
From December 31, 2020 to December 31, 2021
Purchase of 2,297,911 shares of common stock
Equity compensation activity, 156,297 shares
From June 30, 2021 to September 30, 2021
Purchases of 1,049,120 shares of common stock
Equity compensation activity, 1,498 shares
From March 31, 2021 to June 30, 2021
Equity compensation activity, 13,725 shares
From December 31,2019 to December 31,2020
Purchase of 1,482,992 shares of common stock
Equity compensation activity,170,193 shares
From June 30, 2020 to September 30, 2020
Equity compensation activity,893 shares
from March 31,2020 to May 29,2020
Equity compensation activity, 10,297 shares
from December 31, 2019 to March 23, 2020
Purchases of 282,992 shares of common stock
Equity compensation activity, 125,203 shares
from December 31, 2018 to December 31, 2019
Purchase of 1,300,000 shares of common stock
Equity compensation activity, 102,552 shares
from June 30, 2019 to September 30, 2019
Equity compensation activity, 9,712 shares
from March 31, 2019 to June 30, 2019
Purchases of 600,000 shares of common stock
Equity compensation activity, 6,901 shares
from December 31, 2018 to March 25, 2019
Purchases of 600,000 shares of common stock
Equity compensation activity, 46,129 shares
from December 31, 2017 to December 31, 2018
Purchases of 2,077,101 shares of common stock
Equity compensation activity, 109,852 shares
from December 31, 2016 to December 31, 2017
Equity compensation activity, 242,253 shares
From December 31, 2015 to December 31, 2016
Equity compensation activity, 168,219 shares, including excess tax benefits
From December 31, 2014 to December 31, 2015
Purchases of 225,000 shares of common stock
Equity compensation activity, 185,382 shares, including excess tax benefits
from December 31, 2013 to December 31, 2014
Purchases of 1,200,000 shares of common stock
Equity compensation activity, 524,448 shares, including excess tax benefits
from December 31, 2012 to December 31, 2013
Purchases of 821,091 shares of common stock
Equity compensation activity, 288,413 shares, including excess tax benefits
from December 31, 2011 to December 31, 2012
Stock-based compensation activity, 399,022 shares, including excess tax benefits
from December 31, 2010 to December 31, 2011
Exercise of stock options, 202,578 shares, including excess tax benefits
from dec 31 2009 to dec 31 2010
Exercise of stock options, 748,486 shares, including excess tax benefits
from December 31, 2008 to December 31, 2009
Exercise of stock options, 320,245 shares, including excess tax benefits
from December 31, 2007 to December 31, 2008
Exercise of stock options, 1,453,078 shares, including excess tax benefits
Purchases of 250,000 shares of common stock
from December 31, 2006 to December 31, 2007
Exercise of stock options, 1,033,892 shares, including excess tax benefits
Purchases of 6,000,000 shares of common stock
from December 31, 2005 to December 31, 2006
Exercise of stock options, 418,854 shares, including excess tax benefits
Purchases of 4,500,000 shares of common stock
from December 31, 2004 to December 31, 2005
Exercise of stock options, 310,696 shares, including tax benefits
Purchases of 88,000 shares of common stock
from December 31, 2003 to December 31, 2004
Exercise of stock options, 656,676 shares, including tax benefits
Purchases of 1,173,200 shares of common stock
from December 31, 2002 to December 31, 2003
Exercise of stock options, 752,591 shares, including tax benefits
Purchases of 764,500 shares of common stock
On September 2, 2003, the Company announced that its Board of Directors declared a five-for-four split of the Company's common stock effected in the form of a 25 percent stock dividend. The stock dividend was paid on September 30,2003,to stockholders of record at the close of business on September 16,2003.
from December 31, 2001 to December 31, 2002
Purchases of 213,700 shares of common stock
Exercise of stock options,358,806 shares, including tax benefits
from December 31, 2000 to December 31, 2001
Exercise of stock options, 917,770 shares, including tax benefits
On February 11, 2002, the Company announced that its Board of Directors declared a four-for-three split of the Company's common stock effected in the form of a 33 1/3 percent stock dividend. The stock dividend was payable on March 14, 2002, to stockholders of record at the close of business on February 25, 2002.
from December 31, 1999 to December 31, 2000
Purchases of 225,201 shares of common stock
Exercise of stock options,59,255 shares
from December 31, 1998 to December 31, 1999
Purchases of 302,600 shares of common stock
Exercise of stock options, 198,526 shares
from December 31, 1997 to December 31, 1998
Five-for-four stock split
Purchases of 592,600 shares of common stock
Exercise of stock options, 119,391 shares
from December 31, 1996 to December 31, 1997
Purchases of 126,500 shares of common stock
Exercise of stock options, 364,556 shares
from December 31, 1995 to December 31, 1996
Three-for-two stock split
Exercise of stock options, 216,886 shares
from December 31, 1994 to December 31, 1995
Purchases of 50,000 shares of common stock
Exercise of stock options, 24,000 shares
from December 31, 1993 to December 31, 1994
Purchases of 128,600 shares of common stock
Exercise of stock options,12,700 shares
from February 28, 1993 to February 28, 1994
Proceeds from offering of 2,300,000 shares of common stock, net of related expenses
Exercise of stock options,152,400 shares
from February 28, 1992 to February 28, 1993
Two-for-one stock split
Exercise of stock options 90,600 shares