股本结构
单位：万股
| 公告日期 | 2025-10-30 | 2025-07-30 | 2025-07-30 | 2025-05-07 | 2025-05-07 | 2025-03-17 |
|---|---|---|---|---|---|---|
| 证券总股本 | 15160.00 | 15160.00 | 15140.00 | 15140.00 | 15130.00 | 15132.13 |
| 普通股本 | 15160.00 | 15160.00 | 15140.00 | 15140.00 | 15130.00 | 15132.13 |
| 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 | 2025-09-27 | 2025-07-28 | 2025-06-28 | 2025-05-02 | 2025-03-29 | 2025-03-07 |
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 |
|---|---|---|---|---|
| 2025-10-30 | 15160.00 | 未披露 |
更多>>
From June 28, 2025 to September 27, 2025
Shares issued under stock plans
|
2025-09-27 |
| 2025-07-30 | 15160.00 | 未披露 | 定期报告 | 2025-07-28 |
| 2025-07-30 | 15140.00 | 未披露 |
更多>>
From March 29, 2025 to June 28, 2025
Shares issued under stock plans
|
2025-06-28 |
| 2025-05-07 | 15140.00 | 未披露 | 定期报告 | 2025-05-02 |
| 2025-05-07 | 15130.00 | 未披露 |
更多>>
From December 31,2024 to March 29,2025
Shares issued under stock plans
|
2025-03-29 |
| 2025-03-17 | 15132.13 | 未披露 | 定期报告 | 2025-03-07 |
| 2025-02-12 | 15112.67 | 未披露 | 定期报告 | 2025-02-05 |
| 2025-02-12 | 15112.20 | 未披露 |
更多>>
From December 31, 2023 to December 31, 2024
Shares issued under stock plans
|
2024-12-31 |
| 2024-11-04 | 15099.80 | 未披露 | 定期报告 | 2024-10-31 |
| 2024-11-04 | 15099.10 | 未披露 |
更多>>
From June 29, 2024 to September 28, 2024
Shares issued under stock plans
|
2024-09-28 |
| 2024-07-31 | 15097.84 | 未披露 | 定期报告 | 2024-07-29 |
| 2024-07-31 | 15082.70 | 未披露 | 定期报告 | 2024-06-29 |
| 2024-05-01 | 15079.15 | 未披露 | 定期报告 | 2024-04-29 |
| 2024-05-01 | 15076.84 | 未披露 |
更多>>
From December 31, 2023 to March 30, 2024
Shares issued under stock plans
|
2024-03-30 |
| 2024-03-18 | 15073.38 | 未披露 | 定期报告 | 2024-03-08 |
| 2024-02-15 | 15039.62 | 未披露 | 定期报告 | 2024-02-12 |
| 2024-02-15 | 15036.36 | 未披露 |
更多>>
From December 31, 2022 to December 31, 2023
Shares issued under stock plans
|
2023-12-31 |
| 2023-11-02 | 15015.89 | 未披露 | 定期报告 | 2023-10-30 |
| 2023-11-02 | 15015.48 | 未披露 |
更多>>
From July 1, 2023 to September 30, 2023
Shares issued under stock plans
|
2023-09-30 |
| 2023-08-03 | 15010.83 | 未披露 | 定期报告 | 2023-07-31 |
| 2023-08-03 | 15010.58 | 未披露 |
更多>>
From April 1, 2023 to July 1, 2023
Shares issued under stock plans
|
2023-07-01 |
| 2023-05-11 | 14968.52 | 未披露 | 定期报告 | 2023-05-08 |
| 2023-05-11 | 14966.74 | 未披露 |
更多>>
From December 31, 2022 to April 1, 2023
Shares issued under stock plans
|
2023-04-01 |
| 2023-03-17 | 14966.34 | 未披露 | 定期报告 | 2023-03-10 |
| 2023-02-23 | 14938.12 | 未披露 | 定期报告 | 2023-02-13 |
| 2023-02-23 | 14913.71 | 未披露 |
更多>>
From December 31, 2021 to December 31, 2022
Issuance of common stock in connection with CMC Materials acquisition
Shares issued under stock plans
|
2022-12-31 |
| 2022-11-02 | 14903.46 | 未披露 |
更多>>
From July 2, 2022 to October 1, 2022
Issuance of common stock in connection with CMC Materials acquisition
Shares issued under stock plans
|
2022-10-01 |
| 2022-08-02 | 14896.42 | 未披露 | 定期报告 | 2022-07-29 |
| 2022-08-02 | 13597.05 | 未披露 |
更多>>
From April 2, 2022 to July 2, 2022
Shares issued under stock plans
|
2022-07-02 |
| 2022-04-26 | 13588.31 | 未披露 |
更多>>
From December 31, 2021 to April 2, 2022
Shares issued under stock plans
|
2022-04-02 |
| 2022-03-17 | 13584.41 | 未披露 | 定期报告 | 2022-03-11 |
| 2022-02-04 | 13551.70 | 未披露 |
更多>>
From December 31, 2020 to December 31, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
|
2021-12-31 |
| 2021-10-26 | 13551.46 | 未披露 | 定期报告 | 2021-10-22 |
| 2021-10-26 | 13552.17 | 未披露 |
更多>>
From July 3, 2021 to October 2, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
|
2021-10-02 |
| 2021-07-27 | 13559.75 | 未披露 | 定期报告 | 2021-07-23 |
| 2021-07-27 | 13582.39 | 未披露 |
更多>>
From April 3, 2021 to July 3, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
|
2021-07-03 |
| 2021-04-27 | 13550.10 | 未披露 | 定期报告 | 2021-04-23 |
| 2021-04-27 | 13519.32 | 未披露 |
更多>>
from December 31, 2020 to April 3, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
|
2021-04-03 |
| 2021-03-17 | 13524.76 | 未披露 | 定期报告 | 2021-03-05 |
| 2021-02-05 | 13493.36 | 未披露 | 定期报告 | 2021-02-01 |
| 2021-02-05 | 13494.64 | 未披露 |
更多>>
From December 31,2019 to December 31,2020
Shares issued under stock plans
Repurchase and retirement of common stock
|
2020-12-31 |
| 2020-10-22 | 13499.24 | 未披露 | 定期报告 | 2020-10-19 |
| 2020-10-22 | 13503.59 | 未披露 |
更多>>
from June 27, 2020 to September 26, 2020
Shares issued under stock plans
|
2020-09-26 |
| 2020-07-23 | 13481.89 | 未披露 | 定期报告 | 2020-07-20 |
| 2020-07-23 | 13474.62 | 未披露 |
更多>>
from March 28, 2020 to June 27, 2020
Shares issued under stock plans
|
2020-06-27 |
| 2020-04-21 | 13460.65 | 未披露 | 定期报告 | 2020-04-17 |
| 2020-04-21 | 13460.65 | 未披露 |
更多>>
from December 31, 2019 to March 28, 2020
Shares issued under stock plans
Repurchase and retirement of common stock
|
2020-03-28 |
| 2020-03-18 | 13500.90 | 未披露 | 定期报告 | 2020-03-06 |
| 2020-02-07 | 13462.74 | 未披露 | 定期报告 | 2020-02-03 |
| 2020-02-07 | 13472.74 | 未披露 |
更多>>
from December 31, 2018 to December 31, 2019
Repurchase and retirement of common stock
Shares issued under stock plans
|
2019-12-31 |
| 2019-10-24 | 13487.44 | 未披露 | 定期报告 | 2019-10-21 |
| 2019-10-24 | 13493.91 | 未披露 |
更多>>
from June 30, 2019 to September 28, 2019
Shares issued under stock plans
Repurchase of common stock
|
2019-09-28 |
| 2019-07-25 | 13517.34 | 未披露 | 定期报告 | 2019-07-22 |
| 2019-07-25 | 13514.13 | 未披露 |
更多>>
from March 30, 2019 to June 29,2019
Shares issued under stock plans
Repurchase and retirement of common stock
|
2019-06-29 |
| 2019-04-25 | 13551.36 | 未披露 |
更多>>
from December 31, 2018 to March 30, 2019
Shares issued under stock plans
Repurchase and retirement of common stock
|
2019-03-30 |
| 2019-03-20 | 13551.36 | 未披露 | 定期报告 | 2019-03-08 |
| 2019-02-11 | 13494.24 | 未披露 | 定期报告 | 2019-02-04 |
| 2019-02-11 | 13597.70 | 未披露 |
更多>>
from December 31, 2017 to December 31, 2018
Shares issued under stock plans
Repurchase and retirement of common stock
|
2018-12-31 |
| 2018-10-25 | 14133.11 | 未披露 | 定期报告 | 2018-10-22 |
| 2018-10-25 | 14140.49 | 未披露 | 定期报告 | 2018-09-29 |
| 2018-07-26 | 14163.14 | 未披露 | 定期报告 | 2018-07-23 |
| 2018-07-26 | 14169.12 | 未披露 | 定期报告 | 2018-06-30 |
| 2018-04-26 | 14173.92 | 未披露 | 定期报告 | 2018-04-23 |
| 2018-04-26 | 14180.22 | 未披露 | 定期报告 | 2018-03-31 |
| 2018-03-28 | 14184.73 | 未披露 | 定期报告 | 2018-03-16 |
| 2018-02-15 | 14114.12 | 未披露 | 定期报告 | 2018-02-12 |
| 2018-02-15 | 14128.25 | 未披露 |
更多>>
from December 31, 2016 to December 31, 2017
Shares issued under stock plans
Repurchase and retirement of common stock
|
2017-12-31 |
| 2017-10-26 | 14139.67 | 未披露 | 定期报告 | 2017-10-23 |
| 2017-10-26 | 14147.37 | 未披露 | 定期报告 | 2017-09-30 |
| 2017-07-27 | 14179.38 | 未披露 | 定期报告 | 2017-07-24 |
| 2017-07-27 | 14179.02 | 未披露 | 定期报告 | 2017-07-01 |
| 2017-04-27 | 14167.41 | 未披露 | 定期报告 | 2017-04-24 |
| 2017-04-27 | 14171.01 | 未披露 | 定期报告 | 2017-04-01 |
| 2017-02-17 | 14122.05 | 未披露 | 定期报告 | 2017-02-14 |
| 2017-02-17 | 14132.00 | 未披露 |
更多>>
from December 31, 2015 to December 31, 2016
Shares issued under stock plans
Repurchase and retirement of common stock
|
2016-12-31 |
| 2016-10-26 | 14134.18 | 未披露 | 定期报告 | 2016-10-24 |
| 2016-10-26 | 14132.29 | 未披露 | 定期报告 | 2016-10-01 |
| 2016-07-28 | 14120.98 | 未披露 | 定期报告 | 2016-07-25 |
| 2016-07-28 | 14117.19 | 未披露 | 定期报告 | 2016-07-02 |
| 2016-04-28 | 14083.00 | 未披露 | 定期报告 | 2016-04-02 |
| 2016-04-15 | 14083.00 | 未披露 | 定期报告 | 2016-04-01 |
| 2016-02-29 | 14064.05 | 未披露 | 定期报告 | 2016-02-22 |
| 2016-02-29 | 14071.64 | 未披露 |
更多>>
from December 31, 2014 to December 31, 2015
Shares issued under stock plans
|
2015-12-31 |
| 2015-10-29 | 14056.14 | 未披露 | 定期报告 | 2015-09-26 |
| 2015-07-31 | 14055.46 | 未披露 | 定期报告 | 2015-07-27 |
| 2015-07-31 | 14040.79 | 未披露 |
更多>>
from December 31,2014 to June 27, 2015
Shares issued under stock plans, net of shares withheld for employee taxes
|
2015-06-27 |
| 2015-04-30 | 14023.57 | 未披露 |
更多>>
from December 31, 2014 to March 28, 2015
Shares issued under stock plans, net of shares withheld for employee taxes
|
2015-03-28 |
| 2015-03-27 | 14023.57 | 未披露 | 定期报告 | 2015-03-13 |
| 2015-02-26 | 13979.26 | 未披露 |
更多>>
from December31, 2013 to December31, 2014
Shares issued under stock plans
|
2014-12-31 |
| 2014-10-31 | 13950.12 | 未披露 | 定期报告 | 2014-10-27 |
| 2014-10-31 | 13950.09 | 未披露 |
更多>>
from December 31, 2013 to September 27, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
|
2014-09-27 |
| 2014-08-05 | 13945.33 | 未披露 | 定期报告 | 2014-07-29 |
| 2014-08-05 | 13932.89 | 未披露 |
更多>>
from December 31, 2013 to June 28, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
|
2014-06-28 |
| 2014-05-05 | 13916.82 | 未披露 | 定期报告 | 2014-04-21 |
| 2014-05-05 | 13916.75 | 未披露 |
更多>>
from December 31, 2013 to March 29, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
|
2014-03-29 |
| 2014-04-04 | 13916.75 | 未披露 | 定期报告 | 2014-03-21 |
| 2014-02-20 | 13873.56 | 未披露 | 定期报告 | 2014-02-12 |
| 2014-02-20 | 13873.44 | 未披露 |
更多>>
from December31, 2012 to December31, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
|
2013-12-31 |
| 2013-10-25 | 13860.46 | 未披露 | 定期报告 | 2013-10-18 |
| 2013-10-25 | 13866.68 | 未披露 |
更多>>
from December 31, 2012 to September 28, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
|
2013-09-28 |
| 2013-07-26 | 13906.41 | 未披露 | 定期报告 | 2013-07-22 |
| 2013-07-26 | 13917.48 | 未披露 |
更多>>
From December 31, 2012 to June 29, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
|
2013-06-29 |
| 2013-04-26 | 13932.19 | 未披露 | 定期报告 | 2013-04-22 |
| 2013-04-26 | 13948.82 | 未披露 |
更多>>
from December 31, 2012 to March 30, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
|
2013-03-30 |
| 2013-04-05 | 13956.05 | 未披露 | 定期报告 | 2013-03-22 |
| 2013-02-22 | 13867.98 | 未披露 | 定期报告 | 2013-02-13 |
| 2013-02-22 | 13845.78 | 未披露 |
更多>>
from December 31, 2011 to December 31, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
|
2012-12-31 |
| 2012-10-25 | 13750.85 | 未披露 | 定期报告 | 2012-10-18 |
| 2012-10-25 | 13750.68 | 未披露 |
更多>>
from December 31, 2011 to September 29, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
|
2012-09-29 |
| 2012-07-27 | 13741.26 | 未披露 |
更多>>
from December 31, 2011 to June 30, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
|
2012-06-30 |
| 2012-04-27 | 13725.98 | 未披露 | 定期报告 | 2012-04-18 |
| 2012-04-27 | 13725.91 | 未披露 |
更多>>
Shares issued under stock plans
|
2012-03-31 |
| 2012-02-24 | 13611.22 | 未披露 | 定期报告 | 2012-02-09 |
| 2012-02-24 | 13582.06 | 未披露 |
更多>>
from December 31, 2010 to December 31, 2011
Shares issued under stock plans
|
2011-12-31 |
| 2011-10-28 | 13510.82 | 未披露 | 定期报告 | 2011-10-19 |
| 2011-10-28 | 13506.23 | 未披露 |
更多>>
from Dec 31,2010 to Oct 1,2011
Shares issued under stock plans
|
2011-10-01 |
| 2011-07-29 | 13500.10 | 未披露 | 定期报告 | 2011-07-19 |
| 2011-07-29 | 13494.84 | 未披露 |
更多>>
from December 31 2010 to July 2 2011
Shares issued under stock plans
|
2011-07-02 |
| 2011-04-22 | 13434.71 | 未披露 | 定期报告 | 2011-04-19 |
| 2011-04-22 | 13432.76 | 未披露 |
更多>>
Shares issued under stock plans
|
2011-04-02 |
| 2011-02-24 | 13325.56 | 未披露 | 定期报告 | 2011-02-15 |
| 2011-02-24 | 13290.09 | 未披露 |
更多>>
from December 31, 2009 to December 31, 2010
Shares issued under stock plans
|
2010-12-31 |
| 2010-10-27 | 13189.46 | 未披露 | 定期报告 | 2010-10-25 |
| 2010-07-28 | 13189.38 | 未披露 | 定期报告 | 2010-07-23 |
| 2010-07-28 | 13188.91 | 未披露 |
更多>>
Shares issued under stock plans
|
2010-07-03 |
| 2010-02-26 | 13072.90 | 未披露 | 定期报告 | 2010-02-19 |
| 2010-02-26 | 13004.35 | 未披露 |
更多>>
from December 31, 2008 to December 31, 2009
Shares issued under stock plans
Shares issued under stock offering
|
2009-12-31 |
| 2009-03-02 | 11340.82 | 未披露 | 定期报告 | 2009-01-31 |
| 2009-03-02 | 11310.15 | 未披露 |
更多>>
from December 31, 2007 to December 31, 2008
Shares issued under employee stock plans
Repurchase and retirement of common stock
|
2008-12-31 |
| 2008-03-03 | 11505.35 | 未披露 | 定期报告 | 2008-01-31 |
| 2008-03-03 | 11535.56 | 未披露 |
更多>>
from December 31, 2006 to December 31, 2007
Shares issued under employee stock plans
Repurchase and retirement of common stock
|
2007-12-31 |
| 2007-03-16 | 13445.36 | 未披露 | 定期报告 | 2007-03-15 |
| 2007-03-16 | 13277.07 | 未披露 |
更多>>
from December 31, 2005 to December 31, 2006
Shares issued under employee stock plans
Repurchase in process, and repurchase and retirement of common stock
|
2006-12-31 |
| 2005-11-23 | 13584.40 | 未披露 | 定期报告 | 2005-10-31 |
| 2005-11-23 | 13529.94 | 未披露 |
更多>>
from August 28, 2004 to August 27, 2005
Shares issued pursuant to stock option plans
Shares issued in connection with prior year acquisition
Shares issued in connection with Mykrolis acquisition
Shares issued pursuant to employee stock purchase plan
Deferred compensation related to restricted stock awards
Repurchase and retirement of shares
|
2005-08-27 |
| 2004-11-12 | 7324.67 | 未披露 | 定期报告 | 2004-10-29 |
| 2004-11-12 | 7337.98 | 未披露 |
更多>>
from August 30, 2003 to August 28, 2004
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
Deferred compensation related to restricted stock awards
|
2004-08-28 |
| 2003-11-26 | 7262.76 | 未披露 | 定期报告 | 2003-10-31 |
| 2003-11-26 | 7251.21 | 未披露 |
更多>>
from August 31, 2002 to August 30, 2003
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
|
2003-08-30 |
| 2002-11-27 | 7116.25 | 未披露 | 定期报告 | 2002-10-31 |
| 2002-11-27 | 7116.05 | 未披露 |
更多>>
from August 25, 2001 to August 31, 2002
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
|
2002-08-31 |
| 2001-11-23 | 6974.17 | 未披露 | 定期报告 | 2001-10-31 |
| 2001-11-23 | 6972.98 | 未披露 |
更多>>
from August 26, 2000 to August 25, 2001
Repurchase and retirement of shares
Shares issued pursuant to stock option Plans
Shares issued pursuant to employee Stock purchase plan
|
2001-08-25 |
| 2000-11-22 | 6842.47 | 未披露 | 定期报告 | 2000-10-31 |
| 2000-11-22 | 6831.72 | 未披露 |
更多>>
from August 28, 1999 to August 26, 2000
Repurchase and retirement of shares
Shares issued pursuant to stock options exercised
Reclassification of ESOT shares upon consummation of initial public offering
Shares issued pursuant to public offering, net of issuance costs
Stock split adjustment
|
2000-08-26 |
| 2000-11-22 | 1835.43 | 未披露 |
更多>>
from August 29, 1998 to August 28, 1999
Repurchase and retirement of shares
|
1999-08-28 |
From June 28, 2025 to September 27, 2025
Shares issued under stock plans
From March 29, 2025 to June 28, 2025
Shares issued under stock plans
From December 31,2024 to March 29,2025
Shares issued under stock plans
From December 31, 2023 to December 31, 2024
Shares issued under stock plans
From June 29, 2024 to September 28, 2024
Shares issued under stock plans
From December 31, 2023 to March 30, 2024
Shares issued under stock plans
From December 31, 2022 to December 31, 2023
Shares issued under stock plans
From July 1, 2023 to September 30, 2023
Shares issued under stock plans
From April 1, 2023 to July 1, 2023
Shares issued under stock plans
From December 31, 2022 to April 1, 2023
Shares issued under stock plans
From December 31, 2021 to December 31, 2022
Issuance of common stock in connection with CMC Materials acquisition
Shares issued under stock plans
From July 2, 2022 to October 1, 2022
Issuance of common stock in connection with CMC Materials acquisition
Shares issued under stock plans
From April 2, 2022 to July 2, 2022
Shares issued under stock plans
From December 31, 2021 to April 2, 2022
Shares issued under stock plans
From December 31, 2020 to December 31, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
From July 3, 2021 to October 2, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
From April 3, 2021 to July 3, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2020 to April 3, 2021
Shares issued under stock plans
Repurchase and retirement of common stock
From December 31,2019 to December 31,2020
Shares issued under stock plans
Repurchase and retirement of common stock
from June 27, 2020 to September 26, 2020
Shares issued under stock plans
from March 28, 2020 to June 27, 2020
Shares issued under stock plans
from December 31, 2019 to March 28, 2020
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2018 to December 31, 2019
Repurchase and retirement of common stock
Shares issued under stock plans
from June 30, 2019 to September 28, 2019
Shares issued under stock plans
Repurchase of common stock
from March 30, 2019 to June 29,2019
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2018 to March 30, 2019
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2017 to December 31, 2018
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2016 to December 31, 2017
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2015 to December 31, 2016
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2014 to December 31, 2015
Shares issued under stock plans
from December 31,2014 to June 27, 2015
Shares issued under stock plans, net of shares withheld for employee taxes
from December 31, 2014 to March 28, 2015
Shares issued under stock plans, net of shares withheld for employee taxes
from December31, 2013 to December31, 2014
Shares issued under stock plans
from December 31, 2013 to September 27, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
from December 31, 2013 to June 28, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
from December 31, 2013 to March 29, 2014
Shares issued under stock plans, net of shares withheld for employee taxes
from December31, 2012 to December31, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2012 to September 28, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
From December 31, 2012 to June 29, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2012 to March 30, 2013
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2011 to December 31, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2011 to September 29, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
from December 31, 2011 to June 30, 2012
Shares issued under stock plans
Repurchase and retirement of common stock
Shares issued under stock plans
from December 31, 2010 to December 31, 2011
Shares issued under stock plans
from Dec 31,2010 to Oct 1,2011
Shares issued under stock plans
from December 31 2010 to July 2 2011
Shares issued under stock plans
Shares issued under stock plans
from December 31, 2009 to December 31, 2010
Shares issued under stock plans
Shares issued under stock plans
from December 31, 2008 to December 31, 2009
Shares issued under stock plans
Shares issued under stock offering
from December 31, 2007 to December 31, 2008
Shares issued under employee stock plans
Repurchase and retirement of common stock
from December 31, 2006 to December 31, 2007
Shares issued under employee stock plans
Repurchase and retirement of common stock
from December 31, 2005 to December 31, 2006
Shares issued under employee stock plans
Repurchase in process, and repurchase and retirement of common stock
from August 28, 2004 to August 27, 2005
Shares issued pursuant to stock option plans
Shares issued in connection with prior year acquisition
Shares issued in connection with Mykrolis acquisition
Shares issued pursuant to employee stock purchase plan
Deferred compensation related to restricted stock awards
Repurchase and retirement of shares
from August 30, 2003 to August 28, 2004
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
Deferred compensation related to restricted stock awards
from August 31, 2002 to August 30, 2003
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
from August 25, 2001 to August 31, 2002
Shares issued pursuant to stock option plans
Shares issued in connection with acquisition
Shares issued pursuant to employee stock purchase plan
from August 26, 2000 to August 25, 2001
Repurchase and retirement of shares
Shares issued pursuant to stock option Plans
Shares issued pursuant to employee Stock purchase plan
from August 28, 1999 to August 26, 2000
Repurchase and retirement of shares
Shares issued pursuant to stock options exercised
Reclassification of ESOT shares upon consummation of initial public offering
Shares issued pursuant to public offering, net of issuance costs
Stock split adjustment
from August 29, 1998 to August 28, 1999
Repurchase and retirement of shares