股本结构
单位：万股
| 公告日期 | 2025-10-22 | 2025-10-22 | 2025-07-24 | 2025-07-24 | 2025-04-21 | 2025-04-21 |
|---|---|---|---|---|---|---|
| 证券总股本 | 7960.59 | 7960.00 | 7956.33 | 7960.00 | 8041.13 | 8040.00 |
| 普通股本 | 7960.59 | 7960.00 | 7956.33 | 7960.00 | 8041.13 | 8040.00 |
| 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 | 2025-10-20 | 2025-09-30 | 2025-07-22 | 2025-06-30 | 2025-04-17 | 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 |
|---|---|---|---|---|
| 2025-10-22 | 7960.59 | 未披露 | 定期报告 | 2025-10-20 |
| 2025-10-22 | 7960.00 | 未披露 |
更多>>
From June 30, 2025 to September 30, 2025
Stock-based activity
|
2025-09-30 |
| 2025-07-24 | 7956.33 | 未披露 | 定期报告 | 2025-07-22 |
| 2025-07-24 | 7960.00 | 未披露 |
更多>>
From March 31, 2025 to June 30, 2025
Repurchases of common stock
Stock-based activity
|
2025-06-30 |
| 2025-04-21 | 8041.13 | 未披露 | 定期报告 | 2025-04-17 |
| 2025-04-21 | 8040.00 | 未披露 |
更多>>
From December 31, 2024 to March 31, 2025
Repurchases of common stock
Stock-based activity
|
2025-03-31 |
| 2025-03-25 | 8038.94 | 未披露 | 定期报告 | 2025-03-13 |
| 2025-02-05 | 8113.16 | 未披露 | 定期报告 | 2025-01-31 |
| 2025-02-05 | 8100.00 | 未披露 |
更多>>
From December 31, 2023 to December 31, 2024
Repurchases of common stock
Stock-based activity
|
2024-12-31 |
| 2024-10-21 | 8100.21 | 未披露 | 定期报告 | 2024-10-18 |
| 2024-10-21 | 8100.00 | 未披露 |
更多>>
From June 30, 2024 to September 30, 2024
Stock-based activity
Repurchases of common stock
|
2024-09-30 |
| 2024-07-18 | 8174.80 | 未披露 | 定期报告 | 2024-07-15 |
| 2024-07-18 | 8170.00 | 未披露 |
更多>>
From March 31, 2024 to June 30, 2024
Repurchases of common stock
Stock-based activity
|
2024-06-30 |
| 2024-04-22 | 8311.44 | 未披露 | 定期报告 | 2024-04-19 |
| 2024-04-22 | 8310.00 | 未披露 |
更多>>
From December 31, 2023 to March 31, 2024
Repurchases of common stock
Stock-based activity
|
2024-03-31 |
| 2024-03-21 | 8309.75 | 未披露 | 定期报告 | 2024-03-11 |
| 2024-02-07 | 8438.80 | 未披露 | 定期报告 | 2024-01-31 |
| 2024-02-07 | 8410.00 | 未披露 |
更多>>
From December 31, 2022 to December 31,2023
Repurchases of common stock
Stock-based activity
|
2023-12-31 |
| 2023-10-23 | 8411.13 | 未披露 | 定期报告 | 2023-10-20 |
| 2023-10-23 | 8410.00 | 未披露 |
更多>>
From June 30, 2023 to September 30, 2023
Repurchases of common stock
Stock-based activity
|
2023-09-30 |
| 2023-07-24 | 8446.57 | 未披露 | 定期报告 | 2023-07-21 |
| 2023-07-24 | 8440.00 | 未披露 |
更多>>
From March 31, 2023 to June 30, 2023
Stock-based activity
|
2023-06-30 |
| 2023-04-24 | 8437.24 | 未披露 | 定期报告 | 2023-04-20 |
| 2023-04-24 | 8440.00 | 未披露 |
更多>>
From December 31, 2022 to March 31, 2023
Stock-based activity
|
2023-03-31 |
| 2023-03-23 | 8436.78 | 未披露 | 定期报告 | 2023-03-10 |
| 2023-02-08 | 8428.48 | 未披露 | 定期报告 | 2023-01-31 |
| 2023-02-08 | 8420.00 | 未披露 |
更多>>
From December 31, 2021 to December 31, 2022
Stock-based activity
|
2022-12-31 |
| 2022-10-24 | 8417.13 | 未披露 | 定期报告 | 2022-10-20 |
| 2022-10-24 | 8410.00 | 未披露 |
更多>>
From June 30, 2022 to September 30, 2022
Stock based compensation
|
2022-09-30 |
| 2022-07-25 | 8410.25 | 未披露 | 定期报告 | 2022-07-21 |
| 2022-07-25 | 8410.00 | 未披露 | 定期报告 | 2022-06-30 |
| 2022-04-25 | 8405.13 | 未披露 | 定期报告 | 2022-04-21 |
| 2022-04-25 | 8400.00 | 未披露 |
更多>>
From December 31, 2021 to March 31, 2022
Stock based compensation
|
2022-03-31 |
| 2022-03-23 | 8403.57 | 未披露 | 定期报告 | 2022-03-14 |
| 2022-02-09 | 8398.82 | 未披露 | 定期报告 | 2022-01-31 |
| 2022-02-09 | 8400.00 | 未披露 |
更多>>
From December 31, 2020 to December 31, 2021
Stock-based activity
|
2021-12-31 |
| 2021-10-18 | 8389.44 | 未披露 | 定期报告 | 2021-10-14 |
| 2021-10-18 | 8390.00 | 未披露 |
更多>>
From June 30, 2021 to September 30, 2021
Stock based compensation
|
2021-09-30 |
| 2021-07-26 | 8384.93 | 未披露 | 定期报告 | 2021-07-15 |
| 2021-07-26 | 8390.00 | 未披露 | 定期报告 | 2021-06-30 |
| 2021-04-19 | 8377.26 | 未披露 | 定期报告 | 2021-04-15 |
| 2021-04-19 | 8380.00 | 未披露 |
更多>>
from December 31, 2020 to March 31, 2021
Stock based compensation
|
2021-03-31 |
| 2021-03-25 | 8372.54 | 未披露 | 定期报告 | 2021-03-15 |
| 2021-02-09 | 8364.98 | 未披露 | 定期报告 | 2021-01-29 |
| 2021-03-26 | 8360.00 | 未披露 |
更多>>
From December 31,2019 to December 31,2020
Stock-based compensation
Dividends paid on common stock
Acquisition of treasury stock
|
2020-12-31 |
| 2020-10-19 | 8353.57 | 未披露 | 定期报告 | 2020-10-15 |
| 2020-10-19 | 8350.00 | 未披露 |
更多>>
From June 30, 2020 to September 30, 2020
Stock based compensation
|
2020-09-30 |
| 2020-07-27 | 8350.58 | 未披露 | 定期报告 | 2020-07-15 |
| 2020-07-27 | 8350.00 | 未披露 | 定期报告 | 2020-06-30 |
| 2020-04-20 | 8349.08 | 未披露 | 定期报告 | 2020-04-15 |
| 2020-04-20 | 8340.00 | 未披露 |
更多>>
From December 31, 2019 to March 31, 2020
Stock based compensation
Acquisition of treasury stock
|
2020-03-31 |
| 2020-04-21 | 8345.78 | 未披露 | 定期报告 | 2020-03-27 |
| 2020-02-18 | 8334.43 | 未披露 | 定期报告 | 2020-01-31 |
| 2020-02-18 | 8360.00 | 未披露 |
更多>>
from December 31, 2018 to December 31, 2019
Acquisition of treasury stock
|
2019-12-31 |
| 2019-10-21 | 8437.81 | 未披露 | 定期报告 | 2019-10-15 |
| 2019-10-21 | 8460.00 | 未披露 |
更多>>
from June 30, 2019 to September 30, 2019
Stock based compensation
Acquisition of treasury stock
|
2019-09-30 |
| 2019-07-22 | 8508.30 | 未披露 | 定期报告 | 2019-07-15 |
| 2019-07-22 | 8500.00 | 未披露 | 定期报告 | 2019-06-30 |
| 2019-04-23 | 8488.81 | 未披露 | 定期报告 | 2019-04-15 |
| 2019-04-23 | 8480.00 | 未披露 |
更多>>
from December 31, 2018 to March 31, 2019
Stock based compensation
Acquisition of treasury stock
|
2019-03-31 |
| 2019-03-22 | 8486.85 | 未披露 | 定期报告 | 2019-03-13 |
| 2019-03-22 | 8483.98 | 未披露 | 定期报告 | 2019-02-28 |
| 2019-02-06 | 8479.45 | 未披露 | 定期报告 | 2019-01-31 |
| 2019-02-06 | 8480.00 | 未披露 |
更多>>
from December 31, 2017 to December 31, 2018
Acquisition of treasury stock
|
2018-12-31 |
| 2018-10-22 | 8609.55 | 未披露 | 定期报告 | 2018-10-15 |
| 2018-10-22 | 8610.00 | 未披露 | 定期报告 | 2018-09-30 |
| 2018-07-23 | 8751.95 | 未披露 | 定期报告 | 2018-07-16 |
| 2018-07-23 | 8750.00 | 未披露 | 定期报告 | 2018-06-30 |
| 2018-04-23 | 8947.50 | 未披露 | 定期报告 | 2018-04-16 |
| 2018-04-23 | 8960.00 | 未披露 | 定期报告 | 2018-03-31 |
| 2018-03-30 | 8958.63 | 未披露 | 定期报告 | 2018-03-23 |
| 2018-03-16 | 8965.05 | 未披露 | 定期报告 | 2018-03-09 |
| 2018-03-16 | 8970.14 | 未披露 | 定期报告 | 2018-02-28 |
| 2018-02-07 | 8984.26 | 未披露 | 定期报告 | 2018-01-31 |
| 2018-02-07 | 8960.00 | 未披露 |
更多>>
from December 31, 2016 to December 31, 2017
Acquisition of treasury stock
|
2017-12-31 |
| 2017-10-18 | 8982.55 | 未披露 | 定期报告 | 2017-10-13 |
| 2017-10-18 | 8980.00 | 未披露 | 定期报告 | 2017-09-30 |
| 2017-07-24 | 8977.86 | 未披露 | 定期报告 | 2017-07-14 |
| 2017-07-24 | 8980.00 | 未披露 | 定期报告 | 2017-06-30 |
| 2017-04-19 | 9087.06 | 未披露 | 定期报告 | 2017-04-14 |
| 2017-04-19 | 9070.00 | 未披露 | 定期报告 | 2017-03-31 |
| 2017-03-17 | 9077.21 | 未披露 | 定期报告 | 2017-03-09 |
| 2017-02-09 | 9150.88 | 未披露 | 定期报告 | 2017-01-31 |
| 2017-02-09 | 9140.00 | 未披露 |
更多>>
from December 31, 2015 to December 31, 2016
Acquisition of treasury stock
|
2016-12-31 |
| 2016-10-19 | 9176.10 | 未披露 | 定期报告 | 2016-10-14 |
| 2016-10-19 | 9190.00 | 未披露 | 定期报告 | 2016-09-30 |
| 2016-07-20 | 9249.31 | 未披露 | 定期报告 | 2016-07-14 |
| 2016-07-20 | 9250.00 | 未披露 | 定期报告 | 2016-06-30 |
| 2016-04-20 | 9290.84 | 未披露 | 定期报告 | 2016-04-14 |
| 2016-04-20 | 9290.00 | 未披露 | 定期报告 | 2016-03-31 |
| 2016-03-17 | 9287.84 | 未披露 | 定期报告 | 2016-03-09 |
| 2016-02-04 | 9329.01 | 未披露 | 定期报告 | 2016-01-27 |
| 2016-02-04 | 9350.00 | 未披露 |
更多>>
from December 31, 2014 to December 31, 2015
Common stock:Activity under stock plans
Treasury stock:Repurchased
|
2015-12-31 |
| 2015-10-19 | 9448.82 | 未披露 | 定期报告 | 2015-10-14 |
| 2015-10-19 | 9450.00 | 未披露 | 定期报告 | 2015-09-30 |
| 2015-07-20 | 9640.96 | 未披露 | 定期报告 | 2015-07-14 |
| 2015-07-20 | 9640.00 | 未披露 | 定期报告 | 2015-06-30 |
| 2015-04-20 | 9636.61 | 未披露 | 定期报告 | 2015-04-15 |
| 2015-04-20 | 9630.00 | 未披露 | 定期报告 | 2015-03-31 |
| 2015-03-19 | 9634.23 | 未披露 | 定期报告 | 2015-03-12 |
| 2015-02-05 | 9574.73 | 未披露 | 定期报告 | 2015-01-30 |
| 2015-02-05 | 9550.00 | 未披露 |
更多>>
from December 31, 2013 to December 31, 2014
Acquisition of treasury stock
Common stock:
Activity under stock plans
Treasury stock:
Repurchased
|
2014-12-31 |
| 2014-10-20 | 9540.28 | 未披露 | 定期报告 | 2014-10-16 |
| 2014-10-20 | 9540.00 | 未披露 | 定期报告 | 2014-09-30 |
| 2014-07-21 | 9633.31 | 未披露 | 定期报告 | 2014-07-16 |
| 2014-07-21 | 9650.00 | 未披露 | 定期报告 | 2014-06-30 |
| 2014-04-21 | 9790.00 | 未披露 | 定期报告 | 2014-03-31 |
| 2014-03-20 | 9800.64 | 未披露 | 定期报告 | 2014-03-13 |
| 2014-02-05 | 9891.66 | 未披露 | 定期报告 | 2014-01-30 |
| 2014-02-05 | 9890.00 | 未披露 |
更多>>
from December 31, 2012 to December 31, 2013
Acquisition of treasury stock
|
2013-12-31 |
| 2013-10-21 | 9956.43 | 未披露 | 定期报告 | 2013-10-16 |
| 2013-10-21 | 9960.00 | 未披露 | 定期报告 | 2013-09-30 |
| 2013-07-22 | 9948.94 | 未披露 | 定期报告 | 2013-07-18 |
| 2013-07-22 | 9950.00 | 未披露 | 定期报告 | 2013-06-30 |
| 2013-04-22 | 10025.30 | 未披露 | 定期报告 | 2013-04-17 |
| 2013-04-22 | 10020.00 | 未披露 | 定期报告 | 2013-03-31 |
| 2013-03-15 | 10022.74 | 未披露 | 定期报告 | 2013-03-07 |
| 2013-02-08 | 10035.12 | 未披露 | 定期报告 | 2013-02-05 |
| 2013-02-08 | 9990.00 | 未披露 |
更多>>
from December 31, 2011 to December 31, 2012
Activity under stock plans
|
2012-12-31 |
| 2012-10-22 | 9973.74 | 未披露 | 定期报告 | 2012-10-18 |
| 2012-10-22 | 9970.00 | 未披露 | 定期报告 | 2012-09-30 |
| 2012-07-23 | 9972.86 | 未披露 | 定期报告 | 2012-07-18 |
| 2012-07-23 | 9970.00 | 未披露 | 定期报告 | 2012-06-30 |
| 2012-04-23 | 9957.65 | 未披露 | 定期报告 | 2012-04-18 |
| 2012-04-23 | 9950.00 | 未披露 | 定期报告 | 2012-03-31 |
| 2012-02-07 | 9938.66 | 未披露 | 定期报告 | 2012-02-02 |
| 2012-02-07 | 9880.00 | 未披露 |
更多>>
from December 31, 2010 to December 31, 2011
Activity under stock plans
|
2011-12-31 |
| 2011-10-24 | 9846.18 | 未披露 | 定期报告 | 2011-10-20 |
| 2011-10-24 | 9840.00 | 未披露 | 定期报告 | 2011-09-30 |
| 2011-07-25 | 9835.37 | 未披露 | 定期报告 | 2011-07-20 |
| 2011-07-25 | 9830.00 | 未披露 | 定期报告 | 2011-06-30 |
| 2011-04-25 | 9793.88 | 未披露 | 定期报告 | 2011-04-20 |
| 2011-04-25 | 9790.00 | 未披露 | 定期报告 | 2011-03-31 |
| 2011-02-10 | 9752.61 | 未披露 | 定期报告 | 2011-02-08 |
| 2011-02-10 | 9730.00 | 未披露 |
更多>>
from December 31, 2009 to December 31, 2010
Activity under stock plans
|
2010-12-31 |
| 2010-10-25 | 9725.54 | 未披露 | 定期报告 | 2010-10-21 |
| 2010-10-25 | 9720.00 | 未披露 | 定期报告 | 2010-09-30 |
| 2010-07-26 | 9717.03 | 未披露 | 定期报告 | 2010-07-21 |
| 2010-07-26 | 9720.00 | 未披露 | 定期报告 | 2010-06-30 |
| 2010-04-26 | 9703.22 | 未披露 | 定期报告 | 2010-04-22 |
| 2010-04-26 | 9700.00 | 未披露 | 定期报告 | 2010-03-31 |
| 2010-02-10 | 9694.66 | 未披露 | 定期报告 | 2010-02-09 |
| 2010-02-10 | 9660.00 | 未披露 |
更多>>
from December 31, 2008 to December 31,2009
Activity under stock plans
|
2009-12-31 |
| 2009-02-12 | 9651.08 | 未披露 | 定期报告 | 2009-02-10 |
| 2009-02-12 | 9640.00 | 未披露 |
更多>>
from December 31, 2007 to December 31, 2008
Activity under stock plans
|
2008-12-31 |
| 2008-02-22 | 9581.49 | 未披露 | 定期报告 | 2008-02-18 |
| 2008-02-22 | 9760.00 | 未披露 |
更多>>
from December 31, 2006 to December 31, 2007
Activity under stock plans
|
2007-12-31 |
| 2007-03-01 | 9397.87 | 未披露 | 定期报告 | 2007-02-23 |
| 2007-03-01 | 9380.00 | 未披露 |
更多>>
from December 31, 2005 to December 31, 2006
Activity under stock plans
|
2006-12-31 |
| 2006-03-08 | 9303.81 | 未披露 | 定期报告 | 2006-03-01 |
| 2006-03-08 | 9260.00 | 未披露 |
更多>>
from December 31, 2004 to December 31, 2005
Deemed preferred dividends and accretion
Conversion of mandatorily redeemable preferred stock
|
2005-12-31 |
| 2005-03-11 | 5394.23 | 未披露 | 定期报告 | 2005-03-08 |
| 2005-03-11 | 5360.00 | 未披露 |
更多>>
from December 31, 2003 to December 31, 2004
Deemed preferred dividends and accretion
Activity under stock plans and other
|
2004-12-31 |
| 2004-03-15 | 3889.72 | 未披露 | 定期报告 | 2004-03-09 |
| 2004-03-15 | 3870.00 | 未披露 |
更多>>
from December 31, 2002 to December 31, 2003
Activity under stock plans and other
|
2003-12-31 |
| 2003-03-03 | 3994.50 | 未披露 | 定期报告 | 2003-02-25 |
| 2003-03-03 | 3850.00 | 未披露 |
更多>>
from December 31, 2001 to December 31, 2002
Activity under stock plans and other
|
2002-12-31 |
| 2002-03-28 | 3835.62 | 未披露 | 定期报告 | 2002-03-22 |
| 2002-03-28 | 3820.00 | 未披露 |
更多>>
from December 31, 2000 to December 31, 2001
Activity under stock plans and other
|
2001-12-31 |
| 2001-03-27 | 3721.64 | 未披露 | 定期报告 | 2001-03-23 |
| 2001-03-27 | 3710.00 | 未披露 |
更多>>
from December 31, 1999 to December 31,2000
Activity under stock plans
|
2000-12-31 |
| 2000-03-27 | 3660.78 | 未披露 | 定期报告 | 2000-03-23 |
| 2000-03-27 | 3660.00 | 未披露 |
更多>>
from December 31, 1998 to December 31, 1999
Activity under stock plans
|
1999-12-31 |
| 1999-03-30 | 3640.96 | 未披露 | 定期报告 | 1999-03-24 |
| 1999-03-30 | 3632.90 | 未披露 |
更多>>
from December 31, 1997 to December 31, 1998
Activity under stock plans
|
1998-12-31 |
| 1998-03-31 | 3686.66 | 未披露 | 定期报告 | 1998-03-16 |
| 1998-03-31 | 3682.10 | 未披露 |
更多>>
from December 31, 1996 to December 31, 1997
Activity under stock plans
Conversion of Subordinated Notes
Treasury stock purchased
|
1997-12-31 |
| 1997-03-28 | 3661.35 | 未披露 | 定期报告 | 1997-03-14 |
| 1997-03-28 | 3656.10 | 未披露 |
更多>>
from December 31, 1995 to December 31, 1996
Issuance of shares to Ciba at $8 per share, net of issuance costs of $2,993
Activity under stock plans
Other issuance of shares
|
1996-12-31 |
| 1996-04-01 | 3611.49 | 未披露 | 定期报告 | 1996-03-15 |
| 1996-04-01 | 1809.10 | 未披露 |
更多>>
from December 31, 1994 to December 31, 1995
Sale of new common stock under standby purchase commitment and subscription rights offering
Activity under stock plans
|
1995-12-31 |
| 1995-03-27 | 924.69 | 未披露 | 定期报告 | 1995-03-17 |
| 1995-03-27 | 730.10 | 未披露 |
更多>>
from December 31, 1993 to December 31, 1994
Activity under stock plans
|
1994-12-31 |
| 1994-04-15 | 730.98 | 未披露 | 定期报告 | 1994-04-08 |
| 1994-04-15 | 731.00 | 未披露 |
更多>>
from December 31, 1992 to December 31, 1993
Common stock issued for employee and shareholder stock plans
|
1993-12-31 |
| 1994-04-15 | 729.60 | 未披露 |
更多>>
from December 31, 1991 to December 31, 1992
Common stock issued for employee and shareholder stock plans
|
1992-12-31 |
From June 30, 2025 to September 30, 2025
Stock-based activity
From March 31, 2025 to June 30, 2025
Repurchases of common stock
Stock-based activity
From December 31, 2024 to March 31, 2025
Repurchases of common stock
Stock-based activity
From December 31, 2023 to December 31, 2024
Repurchases of common stock
Stock-based activity
From June 30, 2024 to September 30, 2024
Stock-based activity
Repurchases of common stock
From March 31, 2024 to June 30, 2024
Repurchases of common stock
Stock-based activity
From December 31, 2023 to March 31, 2024
Repurchases of common stock
Stock-based activity
From December 31, 2022 to December 31,2023
Repurchases of common stock
Stock-based activity
From June 30, 2023 to September 30, 2023
Repurchases of common stock
Stock-based activity
From March 31, 2023 to June 30, 2023
Stock-based activity
From December 31, 2022 to March 31, 2023
Stock-based activity
From December 31, 2021 to December 31, 2022
Stock-based activity
From June 30, 2022 to September 30, 2022
Stock based compensation
From December 31, 2021 to March 31, 2022
Stock based compensation
From December 31, 2020 to December 31, 2021
Stock-based activity
From June 30, 2021 to September 30, 2021
Stock based compensation
from December 31, 2020 to March 31, 2021
Stock based compensation
From December 31,2019 to December 31,2020
Stock-based compensation
Dividends paid on common stock
Acquisition of treasury stock
From June 30, 2020 to September 30, 2020
Stock based compensation
From December 31, 2019 to March 31, 2020
Stock based compensation
Acquisition of treasury stock
from December 31, 2018 to December 31, 2019
Acquisition of treasury stock
from June 30, 2019 to September 30, 2019
Stock based compensation
Acquisition of treasury stock
from December 31, 2018 to March 31, 2019
Stock based compensation
Acquisition of treasury stock
from December 31, 2017 to December 31, 2018
Acquisition of treasury stock
from December 31, 2016 to December 31, 2017
Acquisition of treasury stock
from December 31, 2015 to December 31, 2016
Acquisition of treasury stock
from December 31, 2014 to December 31, 2015
Common stock:Activity under stock plans
Treasury stock:Repurchased
from December 31, 2013 to December 31, 2014
Acquisition of treasury stock
Common stock:
Activity under stock plans
Treasury stock:
Repurchased
from December 31, 2012 to December 31, 2013
Acquisition of treasury stock
from December 31, 2011 to December 31, 2012
Activity under stock plans
from December 31, 2010 to December 31, 2011
Activity under stock plans
from December 31, 2009 to December 31, 2010
Activity under stock plans
from December 31, 2008 to December 31,2009
Activity under stock plans
from December 31, 2007 to December 31, 2008
Activity under stock plans
from December 31, 2006 to December 31, 2007
Activity under stock plans
from December 31, 2005 to December 31, 2006
Activity under stock plans
from December 31, 2004 to December 31, 2005
Deemed preferred dividends and accretion
Conversion of mandatorily redeemable preferred stock
from December 31, 2003 to December 31, 2004
Deemed preferred dividends and accretion
Activity under stock plans and other
from December 31, 2002 to December 31, 2003
Activity under stock plans and other
from December 31, 2001 to December 31, 2002
Activity under stock plans and other
from December 31, 2000 to December 31, 2001
Activity under stock plans and other
from December 31, 1999 to December 31,2000
Activity under stock plans
from December 31, 1998 to December 31, 1999
Activity under stock plans
from December 31, 1997 to December 31, 1998
Activity under stock plans
from December 31, 1996 to December 31, 1997
Activity under stock plans
Conversion of Subordinated Notes
Treasury stock purchased
from December 31, 1995 to December 31, 1996
Issuance of shares to Ciba at $8 per share, net of issuance costs of $2,993
Activity under stock plans
Other issuance of shares
from December 31, 1994 to December 31, 1995
Sale of new common stock under standby purchase commitment and subscription rights offering
Activity under stock plans
from December 31, 1993 to December 31, 1994
Activity under stock plans
from December 31, 1992 to December 31, 1993
Common stock issued for employee and shareholder stock plans
from December 31, 1991 to December 31, 1992
Common stock issued for employee and shareholder stock plans