股本结构

单位:万股
公告日期 2025-11-06 2025-08-07 2025-08-07 2025-05-08 2025-04-25 2025-05-08
证券总股本 741.05 741.05 739.04 739.04 740.36 750.86
普通股本 741.05 741.05 739.04 739.04 740.36 750.86
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 2025-08-06 2025-06-28 2025-05-07 2025-04-24 2025-03-29
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
2025-11-06 741.05 未披露
更多>>
From June 28, 2025 to September 27, 2025 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
2025-09-27
2025-08-07 741.05 未披露 定期报告 2025-08-06
2025-08-07 739.04 未披露
更多>>
From March 29, 2025 to June 28, 2025 Purchase of treasury stock Issuance of stock upon vesting of restricted share awards
2025-06-28
2025-05-08 739.04 未披露 定期报告 2025-05-07
2025-04-25 740.36 未披露 定期报告 2025-04-24
2025-05-08 750.86 未披露
更多>>
From December 31, 2024 to March 29, 2025 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Retirement of common shares
2025-03-29
2025-03-13 758.86 未披露 定期报告 2025-03-12
2025-03-13 760.21 未披露
更多>>
From December 30, 2023 to December 28, 2024 Issuance of stock under employee stock purchase plan Retirement of common shares Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
2024-12-28
2024-11-07 759.70 未披露
更多>>
From June 29, 2024 to September 28, 2024 Issuance of stock under employee stock purchase plan Purchase of treasury stock Issuance of stock upon vesting of restricted share awards
2024-09-28
2024-08-08 762.90 未披露 定期报告 2024-08-06
2024-08-08 766.67 未披露
更多>>
From March 30, 2024 to June 29, 2024 Purchase of treasury stock
2024-06-29
2024-05-09 775.35 未披露 定期报告 2024-05-08
2024-04-29 781.67 未披露 定期报告 2024-04-26
2024-05-09 794.71 未披露 定期报告 2024-03-30
2024-05-08 793.93 未披露 定期报告 2024-03-13
2024-03-14 784.48 未披露
更多>>
From December 31, 2022 to December 30, 2023 Common stock issued for acquisition Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
2023-12-30
2023-11-09 783.24 未披露 定期报告 2023-11-08
2023-11-09 784.64 未披露 定期报告 2023-10-27
2023-11-09 786.06 未披露 定期报告 2023-10-18
2023-11-09 790.02 未披露
更多>>
From July 1, 2023 to September 30, 2023 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
2023-09-30
2023-08-10 797.57 未披露 定期报告 2023-08-09
2023-08-10 793.41 未披露
更多>>
From April 1, 2023 to July 1, 2023 Issuance of stock upon vesting of restricted share awards Purchase of treasury stock Common stock issued as contingent consideration
2023-07-01
2023-05-10 826.93 未披露 定期报告 2023-05-09
2023-04-28 835.63 未披露 定期报告 2023-04-27
2023-05-10 885.76 未披露
更多>>
From December 31, 2022 to April 1, 2023 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
2023-04-01
2023-03-16 905.59 未披露 定期报告 2023-03-15
2023-03-16 928.53 未披露
更多>>
From January 1, 2022 to December 31, 2022 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock Common stock issued for acquisition
2022-12-31
2022-11-10 984.18 未披露 定期报告 2022-11-09
2022-09-30 985.73 未披露 定期报告 2022-10-19
2022-11-10 997.16 未披露
更多>>
From July 2, 2022 to October 1, 2022 Issuance of stock upon vesting of restricted share awards Issuance of stock under employee stock purchase plan Purchase of treasury stock
2022-10-01
2022-08-11 1020.15 未披露 定期报告 2022-08-10
2022-08-11 1013.48 未披露
更多>>
From April 2, 2022 to July 2, 2022 Issuance of stock upon vesting of restricted share awards
2022-07-02
2022-04-28 1013.48 未披露 定期报告 2022-04-28
2022-04-28 1009.66 未披露
更多>>
From January 1, 2022 to April 2, 2022 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
2022-04-02
2022-04-04 1029.09 未披露
更多>>
From January 2, 2021 to January 1, 2022 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting of restricted share awards
2022-01-01
2021-11-12 1048.40 未披露 定期报告 2021-11-11
2021-11-12 1049.16 未披露 定期报告 2021-11-10
2021-11-12 1063.01 未披露 定期报告 2021-10-28
2021-11-12 1070.27 未披露 定期报告 2021-10-20
2021-11-12 1085.65 未披露
更多>>
From July 3, 2021 to October 2, 2021 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting Issuance of stock upon vesting
2021-10-02
2021-08-13 1105.44 未披露 定期报告 2021-08-13
2021-08-13 1106.22 未披露
更多>>
From April 3, 2021 to July 3, 2021 Stock subscription receivable Issuance of stock upon vesting of restricted share awards
2021-07-03
2021-05-14 1108.91 未披露 定期报告 2021-05-13
2021-05-05 1115.78 未披露 定期报告 2021-05-03
2021-04-30 1116.58 未披露 定期报告 2021-04-29
2021-05-14 1148.53 未披露
更多>>
From January 2, 2021 To April 3, 2021 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting of restricted share awards
2021-04-03
2021-04-02 1148.53 未披露 定期报告 2021-04-01
2021-01-15 1195.39 未披露 定期报告 2021-01-14
2021-04-02 1154.29 未披露
更多>>
from December 28, 2019 to January 2, 2021 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
2021-01-02
2020-11-10 1146.37 未披露
更多>>
From June 27, 2020 to September 26, 2020 Issuance of stock under employee stock purchase plan Issuance of equity awards
2020-09-26
2020-08-11 1146.37 未披露 定期报告 2020-08-11
2020-08-11 1132.94 未披露
更多>>
From March 28, 2020 to June 27, 2020 Issuance of equity awards Common stock repurchase
2020-06-27
2020-04-22 1313.60 未披露 定期报告 2020-04-18
2020-05-12 1312.10 未披露
更多>>
From December 28, 2019 to March 28, 2020 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock units
2020-03-28
2020-03-05 1312.10 未披露 定期报告 2020-03-05
2020-03-05 1300.37 未披露
更多>>
from December 29, 2018 to December 28, 2019 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share units
2019-12-28
2019-11-07 1295.58 未披露
更多>>
From June 29, 2019 to September 28, 2019 Issuance of stock under employee stock purchase plan
2019-09-28
2019-08-08 1295.58 未披露 定期报告 2019-08-08
2019-08-08 1289.68 未披露
更多>>
From March 30, 2019 to June 29, 2019 Issuance of stock upon vesting of restricted stock units
2019-06-29
2019-05-10 1275.52 未披露 定期报告 2019-05-09
2019-05-10 1287.18 未披露
更多>>
From December 29, 2018 to March 30, 2019 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock units
2019-03-30
2019-03-11 1287.17 未披露 定期报告 2019-03-11
2019-03-11 1275.52 未披露
更多>>
From December 30, 2017 to December 29, 2018 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share units Common stock issued for acquisition
2018-12-29
2018-11-09 1272.60 未披露 定期报告 2018-11-09
2018-11-09 1228.52 未披露
更多>>
From December 31, 2017 to September 29, 2018 Issuance of stock under employee stock purchase plan
2018-09-29
2018-08-14 1228.52 未披露 定期报告 2018-08-14
2018-05-14 1223.98 未披露
更多>>
From December 31, 2017 to March 31, 2018 Issuance of stock under employee stock purchase plan
2018-03-31
2018-03-08 1223.98 未披露 定期报告 2018-03-07
2018-03-08 1219.44 未披露
更多>>
From December 31, 2016 to December 30, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted share units Common stock repurchase
2017-12-30
2017-11-03 1201.17 未披露 定期报告 2017-10-12
2017-11-02 1200.97 未披露
更多>>
From December 31, 2016 to September 30, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock awards Common stock repurchase
2017-09-30
2017-08-10 1200.97 未披露 定期报告 2017-08-09
2017-08-10 1196.25 未披露
更多>>
from December 31, 2016 to July 1, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock awards Common stock repurchase
2017-07-01
2017-04-28 1196.25 未披露 定期报告 2017-04-28
2017-05-04 1193.75 未披露
更多>>
from December 31, 2016 to April 1, 2017 Issuance of stock under employee stock purchase plan Common stock repurchase
2017-04-01
2017-03-02 1193.75 未披露 定期报告 2017-03-01
2017-03-02 1195.31 未披露
更多>>
From January 2, 2016 to December 31, 2016 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted share units Common stock repurchase
2016-12-31
2016-11-10 1208.42 未披露 定期报告 2016-11-08
2016-10-28 1219.67 未披露 定期报告 2016-10-06
2016-11-10 1222.06 未披露
更多>>
From January 2,2016 to October 1, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
2016-10-01
2016-08-12 1229.52 未披露 定期报告 2016-08-09
2016-08-12 1232.21 未披露
更多>>
from January 2, 2016 to July 2, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
2016-07-02
2016-05-11 1235.88 未披露 定期报告 2016-05-10
2016-04-29 1238.69 未披露 定期报告 2016-04-28
2016-05-11 1242.14 未披露
更多>>
from January 2, 2016 to April 2, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
2016-04-02
2016-03-02 1247.42 未披露 定期报告 2016-03-02
2016-03-02 1249.66 未披露
更多>>
from January 3, 2015 to January 2, 2016 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock units Common stock repurchase
2016-01-02
2015-11-06 1227.60 未披露 定期报告 2015-11-04
2015-10-30 1264.01 未披露 定期报告 2015-10-08
2015-11-06 1264.86 未披露
更多>>
from January 3, 2015 to October 3, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards Purchase of treasury stock
2015-10-03
2015-08-13 1275.18 未披露 定期报告 2015-08-13
2015-05-14 1271.17 未披露
更多>>
from January 3, 2015 to April 4, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards
2015-04-04
2015-03-05 1270.63 未披露 定期报告 2015-03-04
2015-03-05 1267.19 未披露
更多>>
From December 28, 2013 to January 3, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2015-01-03
2014-11-06 1255.46 未披露 定期报告 2014-11-05
2014-10-31 1255.01 未披露 定期报告 2014-10-10
2014-11-06 1254.41 未披露
更多>>
from December 28, 2013 to September 27, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2014-09-27
2014-08-13 1254.16 未披露 定期报告 2014-08-12
2014-08-13 1250.73 未披露
更多>>
From December 28, 2013 to June 28, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2014-06-28
2014-05-08 1246.73 未披露
更多>>
from December 28, 2013 to March 29, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2014-03-29
2014-02-27 1245.28 未披露 定期报告 2014-02-26
2014-02-27 1241.90 未披露
更多>>
From December 29, 2012 to December 28, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards Common stock repurchase
2013-12-28
2013-10-31 1236.70 未披露 定期报告 2013-10-30
2013-10-30 1236.57 未披露 定期报告 2013-10-18
2013-10-31 1236.60 未披露
更多>>
from December 29, 2012 to September 28, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2013-09-28
2013-08-08 1236.47 未披露 定期报告 2013-08-07
2013-08-08 1232.93 未披露
更多>>
from December 29, 2012 to May 9, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2013-05-09
2013-05-10 1231.68 未披露
更多>>
from December 29, 2012 to March 30, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2013-03-30
2013-02-22 1230.98 未披露 定期报告 2013-02-20
2013-02-22 1229.87 未披露
更多>>
from December 31, 2011 to December 29, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2012-12-29
2012-11-08 1203.13 未披露 定期报告 2012-11-06
2012-11-08 1204.15 未披露
更多>>
from December 31, 2011 to September 29, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2012-09-29
2012-08-14 1203.75 未披露 定期报告 2012-08-13
2012-08-14 1205.81 未披露
更多>>
From December 31, 2011 to June 30, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
2012-06-30
2012-05-02 1271.23 未披露 定期报告 2012-05-01
2012-05-02 1274.46 未披露
更多>>
from Dec 31,2011 to Mar 31 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2012-03-31
2012-02-23 1278.81 未披露 定期报告 2012-02-22
2012-02-23 1274.32 未披露
更多>>
from January 1, 2011 to December 31, 2011 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
2011-12-31
2011-11-08 1275.37 未披露 定期报告 2011-11-07
2011-11-08 1286.73 未披露
更多>>
from jan 1 2011 to oct 1 2011 Issuance of stock under employee stock purchase plan Exercise of stock options
2011-10-01
2011-08-10 1304.65 未披露 定期报告 2011-08-09
2011-08-10 1302.18 未披露
更多>>
from January 1, 2011 to July 2, 2011 Issuance of stock under employee stock purchase plan Exercise of stock options Common stock repurchase
2011-07-02
2011-05-04 1306.66 未披露 定期报告 2011-05-03
2011-05-04 1305.71 未披露
更多>>
Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
2011-04-02
2011-02-23 1302.93 未披露 定期报告 2011-02-22
2011-02-23 1317.10 未披露
更多>>
from Jan 2 2010 to January 1, 2011 Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
2011-01-01
2010-11-12 1319.15 未披露
更多>>
from Jan 2 2010 to Oct 2 2010 Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
2010-10-02
2010-08-11 1300.60 未披露 定期报告 2010-08-11
2010-08-11 1297.02 未披露
更多>>
from Jan 2 2010 to July 3 2010 Issuance of stock under employee stock purchase plan Common stock repurchase
2010-07-03
2010-03-11 1299.92 未披露 定期报告 2010-03-11
2010-03-11 1296.08 未披露
更多>>
from December 27, 2008 to January 2, 2010 Issuance of stock under employee stock purchase plan Shares issued for acquired company
2010-01-02
2009-03-27 1281.35 未披露 定期报告 2009-03-23
2009-03-27 1277.40 未披露
更多>>
from December 29, 2007 to December 27, 2008 Issuance of stock under employee stock purchase plan Acquired companies
2008-12-27
2008-03-20 1205.87 未披露
更多>>
from December 30, 2006 to December 29, 2007 Issuance of stock under employee stock purchase plan Exercise of stock options
2007-12-29
2007-03-22 1189.41 未披露 定期报告 2007-03-21
2007-03-22 1182.21 未披露
更多>>
from December 31, 2005 to December 30, 2006 Issuance of stock under employee stock purchase plan Exercise of stock options
2006-12-30
2006-03-23 1174.39 未披露 定期报告 2006-03-21
2006-03-23 1172.83 未披露
更多>>
from January 1, 2005 to December 31, 2005 Issuance of stock under employee stock purchase plan Exercise of stock options Issuance of common stock and stock options in connection with acquisition
2005-12-31
2005-03-17 1138.57 未披露 定期报告 2005-03-16
2005-03-17 1138.35 未披露
更多>>
from December 27, 2003 to January 1, 2005 Issuance of stock under employee stock purchase plan Exercise of stock options
2005-01-01
2004-03-18 1130.05 未披露 定期报告 2004-03-17
2004-03-18 1128.53 未披露
更多>>
from December 31, 2002 to December 31, 2003 Issuance of stock under employee stock purchase plan Exercise of stock options Issuance of restricted shares pursuant to stock option tender offer
2003-12-31
2003-02-28 1062.61 未披露
更多>>
from December 31, 2001 to December 31, 2002 Issuance of stock under employee stock purchase plan Exercise of stock options
2002-12-31
2002-02-25 1057.18 未披露
更多>>
from December 31, 2000 to December 31, 2001 Issuance of stock under employee stock purchase plan
2001-12-31
2001-03-01 1049.97 未披露
更多>>
from December 31, 1999 to December 31, 2000 Exercise of stock options
2000-12-31
2000-01-07 1049.62 未披露
更多>>
from October 31, 1998 to October 31, 1999 Exercise of stock options
1999-10-31
1999-01-13 1047.56 未披露 定期报告 1999-01-11
1999-01-13 1044.75 未披露
更多>>
from October 31, 1997 to October 31, 1998 Exercise of stock options Exercise of warrants Sale of common stock
1998-10-31
1998-01-20 762.01 未披露 定期报告 1998-01-12
1998-01-20 758.22 未披露
更多>>
from October 31, 1996 to October 31, 1997 Retirement of Treasury Stock Exercise of stock options Sale of common stock Issuance of common stock in connection with acquisitions Issuance of common stock in connection with legal settlement
1997-10-31
1997-01-15 481.57 未披露
更多>>
from October 31, 1995 to October 31, 1996 Exercise of stock options Issuance of common stock in connection with acquisitions Sale of common stock In April 1996, the Board of Directors, with stockholder approval, amended the Company's Articles of Incorporation to effect a one-for-five reverse split of common stock whereby each five shares of issued and outstanding common stock were exchanged for one share of common stock.
1996-10-31
1996-01-10 1596.11 未披露
更多>>
from October 31, 1994 to October 31, 1995 Issuance of common stock in connection with Acquisition of Cataract, Inc.
1995-10-31
1996-01-10 1439.96 未披露
更多>>
from October 31, 1993 to October 31, 1994 Exercise of stock options
1994-10-31
From June 28, 2025 to September 27, 2025 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
From March 29, 2025 to June 28, 2025 Purchase of treasury stock Issuance of stock upon vesting of restricted share awards
From December 31, 2024 to March 29, 2025 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Retirement of common shares
From December 30, 2023 to December 28, 2024 Issuance of stock under employee stock purchase plan Retirement of common shares Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
From June 29, 2024 to September 28, 2024 Issuance of stock under employee stock purchase plan Purchase of treasury stock Issuance of stock upon vesting of restricted share awards
From March 30, 2024 to June 29, 2024 Purchase of treasury stock
From December 31, 2022 to December 30, 2023 Common stock issued for acquisition Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
From July 1, 2023 to September 30, 2023 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
From April 1, 2023 to July 1, 2023 Issuance of stock upon vesting of restricted share awards Purchase of treasury stock Common stock issued as contingent consideration
From December 31, 2022 to April 1, 2023 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
From January 1, 2022 to December 31, 2022 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock Common stock issued for acquisition
From July 2, 2022 to October 1, 2022 Issuance of stock upon vesting of restricted share awards Issuance of stock under employee stock purchase plan Purchase of treasury stock
From April 2, 2022 to July 2, 2022 Issuance of stock upon vesting of restricted share awards
From January 1, 2022 to April 2, 2022 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards
From January 2, 2021 to January 1, 2022 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting of restricted share awards
From July 3, 2021 to October 2, 2021 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting Issuance of stock upon vesting
From April 3, 2021 to July 3, 2021 Stock subscription receivable Issuance of stock upon vesting of restricted share awards
From January 2, 2021 To April 3, 2021 Issuance of stock under employee stock purchase plan Stock subscription receivable Issuance of stock upon vesting of restricted share awards
from December 28, 2019 to January 2, 2021 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share awards Purchase of treasury stock
From June 27, 2020 to September 26, 2020 Issuance of stock under employee stock purchase plan Issuance of equity awards
From March 28, 2020 to June 27, 2020 Issuance of equity awards Common stock repurchase
From December 28, 2019 to March 28, 2020 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock units
from December 29, 2018 to December 28, 2019 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share units
From June 29, 2019 to September 28, 2019 Issuance of stock under employee stock purchase plan
From March 30, 2019 to June 29, 2019 Issuance of stock upon vesting of restricted stock units
From December 29, 2018 to March 30, 2019 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock units
From December 30, 2017 to December 29, 2018 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted share units Common stock issued for acquisition
From December 31, 2017 to September 29, 2018 Issuance of stock under employee stock purchase plan
From December 31, 2017 to March 31, 2018 Issuance of stock under employee stock purchase plan
From December 31, 2016 to December 30, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted share units Common stock repurchase
From December 31, 2016 to September 30, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock awards Common stock repurchase
from December 31, 2016 to July 1, 2017 Issuance of stock under employee stock purchase plan Issuance of stock upon vesting of restricted stock awards Common stock repurchase
from December 31, 2016 to April 1, 2017 Issuance of stock under employee stock purchase plan Common stock repurchase
From January 2, 2016 to December 31, 2016 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted share units Common stock repurchase
From January 2,2016 to October 1, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
from January 2, 2016 to July 2, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
from January 2, 2016 to April 2, 2016 Issuance of stock under employee stock purchase plan Common stock repurchase
from January 3, 2015 to January 2, 2016 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock units Common stock repurchase
from January 3, 2015 to October 3, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards Purchase of treasury stock
from January 3, 2015 to April 4, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards
From December 28, 2013 to January 3, 2015 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
from December 28, 2013 to September 27, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
From December 28, 2013 to June 28, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
from December 28, 2013 to March 29, 2014 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
From December 29, 2012 to December 28, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Issuance of stock upon vesting of restricted stock awards Common stock repurchase
from December 29, 2012 to September 28, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
from December 29, 2012 to May 9, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
from December 29, 2012 to March 30, 2013 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
from December 31, 2011 to December 29, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
from December 31, 2011 to September 29, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
From December 31, 2011 to June 30, 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options Common stock repurchase
from Dec 31,2011 to Mar 31 2012 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
from January 1, 2011 to December 31, 2011 Issuance of stock under employee stock purchase plan Issuance of stock upon exercise of stock options
from jan 1 2011 to oct 1 2011 Issuance of stock under employee stock purchase plan Exercise of stock options
from January 1, 2011 to July 2, 2011 Issuance of stock under employee stock purchase plan Exercise of stock options Common stock repurchase
Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
from Jan 2 2010 to January 1, 2011 Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
from Jan 2 2010 to Oct 2 2010 Issuance of stock under employee stock purchase plan Issuance of stock under stock option plans Common stock repurchase
from Jan 2 2010 to July 3 2010 Issuance of stock under employee stock purchase plan Common stock repurchase
from December 27, 2008 to January 2, 2010 Issuance of stock under employee stock purchase plan Shares issued for acquired company
from December 29, 2007 to December 27, 2008 Issuance of stock under employee stock purchase plan Acquired companies
from December 30, 2006 to December 29, 2007 Issuance of stock under employee stock purchase plan Exercise of stock options
from December 31, 2005 to December 30, 2006 Issuance of stock under employee stock purchase plan Exercise of stock options
from January 1, 2005 to December 31, 2005 Issuance of stock under employee stock purchase plan Exercise of stock options Issuance of common stock and stock options in connection with acquisition
from December 27, 2003 to January 1, 2005 Issuance of stock under employee stock purchase plan Exercise of stock options
from December 31, 2002 to December 31, 2003 Issuance of stock under employee stock purchase plan Exercise of stock options Issuance of restricted shares pursuant to stock option tender offer
from December 31, 2001 to December 31, 2002 Issuance of stock under employee stock purchase plan Exercise of stock options
from December 31, 2000 to December 31, 2001 Issuance of stock under employee stock purchase plan
from December 31, 1999 to December 31, 2000 Exercise of stock options
from October 31, 1998 to October 31, 1999 Exercise of stock options
from October 31, 1997 to October 31, 1998 Exercise of stock options Exercise of warrants Sale of common stock
from October 31, 1996 to October 31, 1997 Retirement of Treasury Stock Exercise of stock options Sale of common stock Issuance of common stock in connection with acquisitions Issuance of common stock in connection with legal settlement
from October 31, 1995 to October 31, 1996 Exercise of stock options Issuance of common stock in connection with acquisitions Sale of common stock In April 1996, the Board of Directors, with stockholder approval, amended the Company's Articles of Incorporation to effect a one-for-five reverse split of common stock whereby each five shares of issued and outstanding common stock were exchanged for one share of common stock.
from October 31, 1994 to October 31, 1995 Issuance of common stock in connection with Acquisition of Cataract, Inc.
from October 31, 1993 to October 31, 1994 Exercise of stock options