股本结构
单位：万股
| 公告日期 | 2024-04-01 | 2024-04-01 | 2023-11-20 | 2023-08-14 | 2023-06-29 | 2023-05-15 |
|---|---|---|---|---|---|---|
| 证券总股本 | 1100.78 | 1077.69 | 1075.93 | 1075.62 | 1075.60 | 1076.06 |
| 普通股本 | 1100.78 | 1077.69 | 1075.93 | 1075.62 | 1075.60 | 1076.06 |
| 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 | 2024-03-21 | 2023-12-31 | 2023-11-20 | 2023-06-30 | 2023-06-15 | 2023-05-15 |
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 |
|---|---|---|---|---|
| 2024-04-01 | 1100.78 | 未披露 | 定期报告 | 2024-03-21 |
| 2024-04-01 | 1077.69 | 未披露 |
更多>>
From December 31, 2022 to December 31, 2023
awards for payment of withholding taxes
Vesting of restricted stock awards
|
2023-12-31 |
| 2023-11-20 | 1075.93 | 未披露 | 定期报告 | 2023-11-20 |
| 2023-08-14 | 1075.62 | 未披露 |
更多>>
From April 1, 2023 to June 30, 2023
Shares deducted from restricted stock awards for payment of withholding taxes
Vesting of restricted stock awards
|
2023-06-30 |
| 2023-06-29 | 1075.60 | 未披露 | 定期报告 | 2023-06-15 |
| 2023-05-15 | 1076.06 | 未披露 | 定期报告 | 2023-05-15 |
| 2023-05-15 | 1076.06 | 未披露 |
更多>>
From January 1, 2023 to March 31, 2023
awards for payment of withholding taxes
Vesting of restricted stock awards
|
2023-03-31 |
| 2023-03-31 | 1075.56 | 未披露 | 定期报告 | 2023-03-21 |
| 2023-03-31 | 1070.01 | 未披露 |
更多>>
From December 31, 2021 to December 31, 2022
Vesting of restricted stock awards
Issuance of common stock - employee stock purchase plan
Shares deducted from restricted stock awards for payment of withholding taxes
|
2022-12-31 |
| 2022-11-14 | 1068.45 | 未披露 | 定期报告 | 2022-11-14 |
| 2022-08-15 | 1064.57 | 未披露 |
更多>>
From April 1, 2022 to June 30, 2022
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2022-06-30 |
| 2022-07-01 | 1064.44 | 未披露 | 定期报告 | 2022-06-17 |
| 2022-05-16 | 1064.51 | 未披露 | 定期报告 | 2022-05-16 |
| 2022-05-16 | 1063.79 | 未披露 |
更多>>
From January 1, 2022 to March 31, 2022
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2022-03-31 |
| 2022-04-04 | 1063.75 | 未披露 | 定期报告 | 2022-03-21 |
| 2022-04-04 | 1048.43 | 未披露 |
更多>>
From December 31, 2020 to December 31, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2021-12-31 |
| 2021-11-15 | 1048.31 | 未披露 | 定期报告 | 2021-11-12 |
| 2021-11-15 | 1047.62 | 未披露 |
更多>>
From July 1, 2021 to September 30, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2021-09-30 |
| 2021-08-16 | 1056.43 | 未披露 | 定期报告 | 2021-08-13 |
| 2021-08-16 | 1056.11 | 未披露 |
更多>>
From March 31, 2021 to June 30, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2021-06-30 |
| 2021-06-30 | 1068.91 | 未披露 | 定期报告 | 2021-06-17 |
| 2021-05-17 | 1068.07 | 未披露 | 定期报告 | 2021-05-17 |
| 2021-05-17 | 1067.28 | 未披露 |
更多>>
From January 1, 2021 To March 31, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2021-03-31 |
| 2021-03-31 | 1070.14 | 未披露 | 定期报告 | 2021-03-17 |
| 2021-03-31 | 1061.68 | 未披露 |
更多>>
From December 31, 2019 to December 31, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Acquisition of treasury stock
|
2020-12-31 |
| 2020-11-09 | 1067.52 | 未披露 |
更多>>
From July 1, 2020 to September 30, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2020-09-30 |
| 2020-08-11 | 1067.03 | 未披露 | 定期报告 | 2020-08-07 |
| 2020-08-11 | 1067.01 | 未披露 |
更多>>
From April 1, 2020 to June 30, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Acquisition of treasury stock
|
2020-06-30 |
| 2020-06-25 | 1068.60 | 未披露 | 定期报告 | 2020-06-12 |
| 2020-05-11 | 1079.33 | 未披露 | 定期报告 | 2020-05-08 |
| 2020-05-11 | 1078.14 | 未披露 |
更多>>
From December 31, 2019 to March 31, 2020
Vesting of restricted stock awards
Awards for payment of withholding taxes
Acquisition of treasury stock
|
2020-03-31 |
| 2020-03-16 | 1080.38 | 未披露 | 定期报告 | 2020-03-09 |
| 2020-03-16 | 1079.75 | 未披露 |
更多>>
From December 31, 2018 to December 31, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
|
2019-12-31 |
| 2019-11-12 | 1078.51 | 未披露 | 定期报告 | 2019-11-12 |
| 2019-11-12 | 1078.36 | 未披露 |
更多>>
from July 1, 2019 to September 30, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2019-09-30 |
| 2019-08-09 | 1077.56 | 未披露 | 定期报告 | 2019-08-07 |
| 2019-08-09 | 1077.46 | 未披露 |
更多>>
from April 1, 2019 to June 30,2019
Vesting of restricted stock awards
Awards for payment of withholding taxes
Exercise of stock options
|
2019-06-30 |
| 2019-06-28 | 1077.38 | 未披露 | 定期报告 | 2019-06-14 |
| 2019-05-10 | 1076.94 | 未披露 | 定期报告 | 2019-05-09 |
| 2019-05-10 | 1076.87 | 未披露 |
更多>>
from January 1, 2019 to March 31, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
|
2019-03-31 |
| 2019-03-18 | 1076.00 | 未披露 | 定期报告 | 2019-03-12 |
| 2019-03-18 | 1074.77 | 未披露 |
更多>>
from January 1, 2018 to December 31, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
|
2018-12-31 |
| 2018-11-08 | 1074.34 | 未披露 | 定期报告 | 2018-11-08 |
| 2018-11-08 | 1070.17 | 未披露 |
更多>>
from January 1, 2018 to September 30, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2018-09-30 |
| 2018-08-09 | 1066.36 | 未披露 | 定期报告 | 2018-08-09 |
| 2018-08-09 | 1066.15 | 未披露 |
更多>>
from January 1, 2018 to June 30, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2018-06-30 |
| 2018-06-21 | 1066.02 | 未披露 | 定期报告 | 2018-06-13 |
| 2018-05-10 | 1066.76 | 未披露 | 定期报告 | 2018-05-09 |
| 2018-05-10 | 1066.67 | 未披露 |
更多>>
From January 1, 2018 to March 31, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2018-03-31 |
| 2018-03-15 | 1068.43 | 未披露 | 定期报告 | 2018-03-12 |
| 2018-03-15 | 1063.18 | 未披露 |
更多>>
from December 31, 2016 to December 31, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2017-12-31 |
| 2017-11-09 | 1062.64 | 未披露 | 定期报告 | 2017-11-09 |
| 2017-11-09 | 1062.34 | 未披露 |
更多>>
from January 1, 2017 to September 30, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2017-09-30 |
| 2017-08-10 | 1063.05 | 未披露 | 定期报告 | 2017-08-10 |
| 2017-08-10 | 1062.25 | 未披露 |
更多>>
From January 1, 2017 to June 30, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2017-06-30 |
| 2017-06-29 | 1062.21 | 未披露 | 定期报告 | 2017-06-14 |
| 2017-05-11 | 1062.36 | 未披露 | 定期报告 | 2017-05-11 |
| 2017-05-11 | 1062.25 | 未披露 |
更多>>
from January 1,2017 to March 31, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Exercise of stock options
|
2017-03-31 |
| 2017-03-16 | 1062.14 | 未披露 | 定期报告 | 2017-03-01 |
| 2017-03-16 | 792.19 | 未披露 |
更多>>
From December 31, 2015 to December 31, 2016
Proceeds from private placement, net of closing costs of $192,369
Exercise of stock options
Acquisition of treasury stock
|
2016-12-31 |
| 2016-11-10 | 791.34 | 未披露 | 定期报告 | 2016-11-10 |
| 2016-11-10 | 791.29 | 未披露 |
更多>>
From January 1, 2016 to September 30, 2016
Proceeds from private placement, net of closing costs of $192,369
Exercise of stock options
Acquisition of treasury stock
|
2016-09-30 |
| 2016-08-11 | 791.04 | 未披露 |
更多>>
from January 1, 2016 to June 30, 2016
Proceeds from private placement, net of closing costs of $186,426
Acquisition of treasury stock
|
2016-06-30 |
| 2016-05-12 | 791.24 | 未披露 | 定期报告 | 2016-05-12 |
| 2016-05-12 | 731.71 | 未披露 |
更多>>
from January 1, 2016 to March 31, 2016
Acquisition of treasury stock
|
2016-03-31 |
| 2016-03-24 | 732.16 | 未披露 | 定期报告 | 2016-03-22 |
| 2016-03-24 | 732.86 | 未披露 |
更多>>
from December 31, 2014 to December 31, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2015-12-31 |
| 2015-11-12 | 733.51 | 未披露 |
更多>>
from January 1, 2015 to September 30, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2015-09-30 |
| 2015-08-12 | 733.37 | 未披露 |
更多>>
from January 1, 2015 to June 16, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2015-06-16 |
| 2015-05-13 | 734.17 | 未披露 | 定期报告 | 2015-05-12 |
| 2015-05-13 | 734.38 | 未披露 |
更多>>
from January 1, 2015 to March 31, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2015-03-31 |
| 2015-03-25 | 733.59 | 未披露 | 定期报告 | 2015-03-16 |
| 2015-03-25 | 730.88 | 未披露 |
更多>>
from December 31,2013 to December 31,2014
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2014-12-31 |
| 2014-11-13 | 729.54 | 未披露 |
更多>>
From January 1, 2014 to September 30, 2014
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2014-09-30 |
| 2014-08-12 | 729.49 | 未披露 | 定期报告 | 2014-08-12 |
| 2014-08-12 | 729.09 | 未披露 |
更多>>
From January 1, 2014 to June 30, 2014
options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
|
2014-06-30 |
| 2014-07-01 | 730.47 | 未披露 | 定期报告 | 2014-06-17 |
| 2014-05-15 | 728.24 | 未披露 | 定期报告 | 2014-05-15 |
| 2014-03-31 | 726.66 | 未披露 |
更多>>
from December 31,2012 to December 31,2013
Proceeds from public offering, net of offering costs of $1,723,121
Exercise of stock options
Acquisition of treasury stock
|
2013-12-31 |
| 2013-10-15 | 381.66 | 未披露 | 定期报告 | 2013-10-04 |
| 2013-11-14 | 381.16 | 未披露 |
更多>>
from January 1, 2013 to September 30, 2013
Exercise of stock options
Acquisition of treasury stock
|
2013-09-30 |
| 2013-08-14 | 381.09 | 未披露 |
更多>>
from January 1, 2013 to June 30, 2013
Acquisition of treasury stock
|
2013-06-30 |
| 2013-06-25 | 384.09 | 未披露 | 定期报告 | 2013-06-18 |
| 2013-04-01 | 384.09 | 未披露 |
更多>>
from December 31, 2011 to December 31, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
Acquisition of treasury stock
|
2012-12-31 |
| 2012-11-14 | 384.29 | 未披露 | 定期报告 | 2012-11-14 |
| 2012-11-14 | 382.84 | 未披露 |
更多>>
from December 31, 2011 to September 30, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
Acquisition of treasury stock
|
2012-09-30 |
| 2012-08-14 | 383.04 | 未披露 | 定期报告 | 2012-08-14 |
| 2012-08-14 | 381.12 | 未披露 |
更多>>
from December 31, 2011 to June 30, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
|
2012-06-30 |
| 2012-06-22 | 381.12 | 未披露 | 定期报告 | 2012-06-14 |
| 2012-05-15 | 377.99 | 未披露 |
更多>>
From December 31, 2011 to March 31, 2012
Exercise of stock options
|
2012-03-31 |
| 2012-03-30 | 377.99 | 未披露 | 定期报告 | 2012-03-30 |
| 2012-03-30 | 375.99 | 未披露 |
更多>>
from December 31, 2010 to December 31, 2011
Purchase of treasury stock
|
2011-12-31 |
| 2010-11-15 | 383.84 | 未披露 |
更多>>
From December 31, 2009 to September 30, 2010
Stock-based payments
Mandatorily redeemable preferred stock exchanged for restricted common stock
Retirement of treasury stock
|
2010-09-30 |
| 2010-08-16 | 383.38 | 未披露 |
更多>>
from December 31, 2009 to June 30, 2010
Stock-based payments
Mandatorily redeemable preferred stock exchanged for common stock
Retirement of treasury stock
|
2010-06-30 |
| 2010-04-07 | 303.85 | 未披露 | 定期报告 | 2010-03-25 |
| 2010-04-07 | 298.85 | 未披露 |
更多>>
from December 31, 2008 to December 31, 2009
Stock-based payments
|
2009-12-31 |
| 2009-04-14 | 297.27 | 未披露 |
更多>>
from December 31, 2007 to December 31, 2008
Stock-based payments
Return of stock as settlement of liability
|
2008-12-31 |
| 2008-03-31 | 296.90 | 未披露 |
更多>>
from December 31, 2006 to December 31, 2007
Exercise of Stock Options
Stock-based payments
Return of stock as settlement of liability
|
2007-12-31 |
| 2007-03-29 | 296.20 | 未披露 | 定期报告 | 2007-02-28 |
| 2007-03-29 | 289.60 | 未披露 |
更多>>
from December 31, 2005 to December 31, 2006
Exercise of Stock Options
|
2006-12-31 |
| 2006-03-30 | 289.60 | 未披露 | 定期报告 | 2006-02-28 |
| 2006-03-30 | 276.85 | 未披露 |
更多>>
from December 31, 2004 to December 31, 2005
Conversion of Mandatorily Redeemable Preferred Stock
Exercise of Stock Options
|
2005-12-31 |
| 2005-03-31 | 272.20 | 未披露 | 定期报告 | 2005-02-28 |
| 2005-03-31 | 267.24 | 未披露 |
更多>>
from December 31, 2003 to December 31, 2004
Exercise of Stock Options and Warrants
Treasury Stock Acquired
|
2004-12-31 |
From December 31, 2022 to December 31, 2023
awards for payment of withholding taxes
Vesting of restricted stock awards
From April 1, 2023 to June 30, 2023
Shares deducted from restricted stock awards for payment of withholding taxes
Vesting of restricted stock awards
From January 1, 2023 to March 31, 2023
awards for payment of withholding taxes
Vesting of restricted stock awards
From December 31, 2021 to December 31, 2022
Vesting of restricted stock awards
Issuance of common stock - employee stock purchase plan
Shares deducted from restricted stock awards for payment of withholding taxes
From April 1, 2022 to June 30, 2022
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From January 1, 2022 to March 31, 2022
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From December 31, 2020 to December 31, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From July 1, 2021 to September 30, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From March 31, 2021 to June 30, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From January 1, 2021 To March 31, 2021
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From December 31, 2019 to December 31, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Acquisition of treasury stock
From July 1, 2020 to September 30, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
From April 1, 2020 to June 30, 2020
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Acquisition of treasury stock
From December 31, 2019 to March 31, 2020
Vesting of restricted stock awards
Awards for payment of withholding taxes
Acquisition of treasury stock
From December 31, 2018 to December 31, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
from July 1, 2019 to September 30, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
from April 1, 2019 to June 30,2019
Vesting of restricted stock awards
Awards for payment of withholding taxes
Exercise of stock options
from January 1, 2019 to March 31, 2019
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
from January 1, 2018 to December 31, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
from January 1, 2018 to September 30, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1, 2018 to June 30, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
From January 1, 2018 to March 31, 2018
Shares deducted from exercise of stock options for payment of withholding taxes
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from December 31, 2016 to December 31, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1, 2017 to September 30, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
From January 1, 2017 to June 30, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Shares deducted from restricted stock awards for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1,2017 to March 31, 2017
Proceeds from public offering, net of offering costs of $2,173,000
Vesting of restricted stock awards
Exercise of stock options
From December 31, 2015 to December 31, 2016
Proceeds from private placement, net of closing costs of $192,369
Exercise of stock options
Acquisition of treasury stock
From January 1, 2016 to September 30, 2016
Proceeds from private placement, net of closing costs of $192,369
Exercise of stock options
Acquisition of treasury stock
from January 1, 2016 to June 30, 2016
Proceeds from private placement, net of closing costs of $186,426
Acquisition of treasury stock
from January 1, 2016 to March 31, 2016
Acquisition of treasury stock
from December 31, 2014 to December 31, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1, 2015 to September 30, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1, 2015 to June 16, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from January 1, 2015 to March 31, 2015
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from December 31,2013 to December 31,2014
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
From January 1, 2014 to September 30, 2014
Shares deducted from exercise of stock options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
From January 1, 2014 to June 30, 2014
options for payment of withholding taxes
Exercise of stock options
Acquisition of treasury stock
from December 31,2012 to December 31,2013
Proceeds from public offering, net of offering costs of $1,723,121
Exercise of stock options
Acquisition of treasury stock
from January 1, 2013 to September 30, 2013
Exercise of stock options
Acquisition of treasury stock
from January 1, 2013 to June 30, 2013
Acquisition of treasury stock
from December 31, 2011 to December 31, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
Acquisition of treasury stock
from December 31, 2011 to September 30, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
Acquisition of treasury stock
from December 31, 2011 to June 30, 2012
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes
From December 31, 2011 to March 31, 2012
Exercise of stock options
from December 31, 2010 to December 31, 2011
Purchase of treasury stock
From December 31, 2009 to September 30, 2010
Stock-based payments
Mandatorily redeemable preferred stock exchanged for restricted common stock
Retirement of treasury stock
from December 31, 2009 to June 30, 2010
Stock-based payments
Mandatorily redeemable preferred stock exchanged for common stock
Retirement of treasury stock
from December 31, 2008 to December 31, 2009
Stock-based payments
from December 31, 2007 to December 31, 2008
Stock-based payments
Return of stock as settlement of liability
from December 31, 2006 to December 31, 2007
Exercise of Stock Options
Stock-based payments
Return of stock as settlement of liability
from December 31, 2005 to December 31, 2006
Exercise of Stock Options
from December 31, 2004 to December 31, 2005
Conversion of Mandatorily Redeemable Preferred Stock
Exercise of Stock Options
from December 31, 2003 to December 31, 2004
Exercise of Stock Options and Warrants
Treasury Stock Acquired