股本结构
单位：万股
| 公告日期 | 2026-11-04 | 2026-11-04 | 2026-08-05 | 2026-08-05 | 2026-05-06 | 2026-05-06 |
|---|---|---|---|---|---|---|
| 证券总股本 | 4599.50 | 4599.40 | 4561.49 | 4561.30 | 4547.89 | 4547.70 |
| 普通股本 | 4599.50 | 4599.40 | 4561.49 | 4561.30 | 4547.89 | 4547.70 |
| 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 | 2026-10-28 | 2026-09-30 | 2026-07-29 | 2026-06-30 | 2026-04-27 | 2026-03-31 |
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 |
|---|---|---|---|---|
| 2026-11-04 | 4599.50 | 未披露 | 定期报告 | 2026-10-28 |
| 2026-11-04 | 4599.40 | 未披露 |
更多>>
From June 30, 2026 to September 30, 2026
Issuance of common stock under employee stock plans
|
2026-09-30 |
| 2026-08-05 | 4561.49 | 未披露 | 定期报告 | 2026-07-29 |
| 2026-08-05 | 4561.30 | 未披露 |
更多>>
From March 31,2026 to June 30,2026
Issuance of common stock under employee stock plans
|
2026-06-30 |
| 2026-05-06 | 4547.89 | 未披露 | 定期报告 | 2026-04-27 |
| 2026-05-06 | 4547.70 | 未披露 |
更多>>
From December 31, 2025 to March 31, 2026
Issuance of common stock under employee stock plans
|
2026-03-31 |
| 2026-04-13 | 4547.73 | 未披露 | 定期报告 | 2026-03-27 |
| 2026-02-26 | 4543.59 | 未披露 | 定期报告 | 2026-02-18 |
| 2026-02-26 | 4502.70 | 未披露 |
更多>>
From December 31, 2024 to December 31, 2025
Issuance of common stock under employee stock plans
Common stock repurchases, including excise tax
|
2025-12-31 |
| 2025-11-05 | 4487.65 | 未披露 | 定期报告 | 2025-10-29 |
| 2025-11-05 | 4487.60 | 未披露 |
更多>>
From June 30, 2025 to September 30, 2025
Common stock repurchases, including excise tax
Issuance of common stock under employee stock plans
|
2025-09-30 |
| 2025-08-06 | 4593.43 | 未披露 | 定期报告 | 2025-07-30 |
| 2025-08-06 | 4641.90 | 未披露 |
更多>>
From March 31, 2025 to June 30, 2025
Issuance of common stock under employee stock plans
Stock repurchases
|
2025-06-30 |
| 2025-05-07 | 4684.36 | 未披露 | 定期报告 | 2025-04-30 |
| 2025-05-07 | 4684.40 | 未披露 |
更多>>
From December 31, 2024 to March 31, 2025
Issuance of common stock under employee stock plans
|
2025-03-31 |
| 2025-04-03 | 4684.36 | 未披露 | 定期报告 | 2025-03-28 |
| 2025-04-03 | 4684.35 | 未披露 | 定期报告 | 2025-03-15 |
| 2025-02-27 | 4675.94 | 未披露 | 定期报告 | 2025-02-19 |
| 2025-02-27 | 4638.20 | 未披露 |
更多>>
From December 31, 2023 to December 31, 2024
Issuance of common stock under employee stock plans
|
2024-12-31 |
| 2024-11-08 | 4631.68 | 未披露 | 定期报告 | 2024-10-30 |
| 2024-11-08 | 4631.30 | 未披露 |
更多>>
From June 30,2024 to September 30,2024
Issuance of common stock under employee stock plans
|
2024-09-30 |
| 2024-08-06 | 4599.38 | 未披露 | 定期报告 | 2024-07-30 |
| 2024-08-06 | 4599.40 | 未披露 |
更多>>
From March 31, 2024 to June 30, 2024
Issuance of common stock under employee stock plans
|
2024-06-30 |
| 2024-05-07 | 4592.35 | 未披露 | 定期报告 | 2024-04-30 |
| 2024-05-07 | 4592.40 | 未披露 |
更多>>
From December 31, 2023 to March 31, 2024
Issuance of common stock under employee stock plans
|
2024-03-31 |
| 2024-04-04 | 4592.35 | 未披露 | 定期报告 | 2024-03-15 |
| 2024-02-28 | 4591.53 | 未披露 | 定期报告 | 2024-02-21 |
| 2024-02-28 | 4553.90 | 未披露 |
更多>>
From December 31, 2022 to December 31, 2023
Issuance of common stock under employee stock plans
|
2023-12-31 |
| 2023-11-03 | 4546.94 | 未披露 | 定期报告 | 2023-10-27 |
| 2023-11-03 | 4546.30 | 未披露 |
更多>>
From June 30, 2023 to September 30, 2023
Issuance of common stock under employee stock plans
|
2023-09-30 |
| 2023-08-04 | 4521.20 | 未披露 | 定期报告 | 2023-07-28 |
| 2023-08-04 | 4520.50 | 未披露 |
更多>>
From March 31, 2023 to June 30, 2023
Issuance of common stock under employee stock plans
|
2023-06-30 |
| 2023-05-05 | 4508.06 | 未披露 | 定期报告 | 2023-04-28 |
| 2023-05-05 | 4506.90 | 未披露 |
更多>>
From December 31, 2022 to March 31, 2023
Issuance of common stock under employee stock plans
|
2023-03-31 |
| 2023-04-06 | 4506.89 | 未披露 | 定期报告 | 2023-03-27 |
| 2023-04-06 | 4506.88 | 未披露 | 定期报告 | 2023-03-17 |
| 2023-03-01 | 4498.77 | 未披露 | 定期报告 | 2023-02-22 |
| 2023-03-01 | 4474.70 | 未披露 |
更多>>
From December 31, 2021 to December 31, 2022
Issuance of common stock under employee stock plans
Stock repurchases
|
2022-12-31 |
| 2022-11-04 | 4464.98 | 未披露 | 定期报告 | 2022-10-28 |
| 2022-11-04 | 4464.60 | 未披露 |
更多>>
From June 30, 2022 to September 30, 2022
Issuance of common stock under employee stock plans
|
2022-09-30 |
| 2022-08-09 | 4428.88 | 未披露 | 定期报告 | 2022-07-29 |
| 2022-08-09 | 4428.80 | 未披露 |
更多>>
From March 31, 2022 to June 30, 2022
Issuance of common stock under employee stock plans
|
2022-06-30 |
| 2022-05-09 | 4419.82 | 未披露 | 定期报告 | 2022-04-29 |
| 2022-05-09 | 4417.40 | 未披露 |
更多>>
From December 31, 2021 to March 31, 2022
Issuance of common stock under employee stock plans
Stock repurchases
|
2022-03-31 |
| 2022-04-07 | 4417.30 | 未披露 | 定期报告 | 2022-03-28 |
| 2022-04-07 | 4453.76 | 未披露 | 定期报告 | 2022-03-18 |
| 2022-02-25 | 4442.14 | 未披露 | 定期报告 | 2022-02-18 |
| 2022-02-25 | 4417.90 | 未披露 |
更多>>
From December 31, 2020 to December 31, 2021
Issuance of common stock under employee stock plans
|
2021-12-31 |
| 2021-11-05 | 4394.27 | 未披露 | 定期报告 | 2021-10-29 |
| 2021-11-05 | 4386.90 | 未披露 |
更多>>
From June 30, 2021 to September 30, 2021
Issuance of common stock under employee stock plans
|
2021-09-30 |
| 2021-08-06 | 4347.43 | 未披露 | 定期报告 | 2021-07-28 |
| 2021-08-06 | 4343.60 | 未披露 |
更多>>
From March 31, 2021 to June 30, 2021
Issuance of common stock under employee stock plans
|
2021-06-30 |
| 2021-05-04 | 4318.99 | 未披露 | 定期报告 | 2021-04-27 |
| 2021-05-04 | 4317.10 | 未披露 |
更多>>
from December 31, 2020 to March 31, 2021
Issuance of common stock under employee stock plans
|
2021-03-31 |
| 2021-04-08 | 4317.07 | 未披露 | 定期报告 | 2021-03-29 |
| 2021-04-08 | 4306.65 | 未披露 | 定期报告 | 2021-03-03 |
| 2021-02-24 | 4304.16 | 未披露 | 定期报告 | 2021-02-17 |
| 2021-02-24 | 4278.30 | 未披露 |
更多>>
From December 31, 2019 to December 31, 2020
Issuance of common stock under employee stock plans
Stock repurchases
|
2020-12-31 |
| 2020-10-30 | 4230.72 | 未披露 | 定期报告 | 2020-10-23 |
| 2020-10-30 | 4227.40 | 未披露 |
更多>>
From June 30, 2020 to September 30, 2020
Issuance of common stock under employee stock plans
Stock repurchases
|
2020-09-30 |
| 2020-07-31 | 4276.31 | 未披露 | 定期报告 | 2020-07-24 |
| 2020-07-31 | 4275.70 | 未披露 |
更多>>
From March 31, 2020 to June 30, 2020
Issuance of common stock under employee stock plans
|
2020-06-30 |
| 2020-05-08 | 4261.97 | 未披露 | 定期报告 | 2020-05-01 |
| 2020-05-08 | 4260.60 | 未披露 |
更多>>
From December 31, 2019 to March 31, 2020
Issuance of common stock under employee stock plans
|
2020-03-31 |
| 2020-04-07 | 4260.14 | 未披露 | 定期报告 | 2020-03-30 |
| 2020-02-26 | 4246.58 | 未披露 | 定期报告 | 2020-02-20 |
| 2020-02-26 | 4213.20 | 未披露 |
更多>>
From December 31, 2018 to December 31, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
|
2019-12-31 |
| 2019-11-01 | 4193.81 | 未披露 | 定期报告 | 2019-10-25 |
| 2019-11-01 | 4190.50 | 未披露 |
更多>>
from June 30, 2019 to September 30, 2019
Issuance of common stock under employee stock plans
|
2019-09-30 |
| 2019-08-02 | 4165.57 | 未披露 | 定期报告 | 2019-07-26 |
| 2019-08-02 | 4163.90 | 未披露 |
更多>>
from March 31, 2019 to June 30, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
|
2019-06-30 |
| 2019-05-03 | 4121.86 | 未披露 | 定期报告 | 2019-04-26 |
| 2019-05-03 | 4120.60 | 未披露 |
更多>>
from December 31, 2018 to March 31, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
|
2019-03-31 |
| 2019-04-01 | 4120.22 | 未披露 | 定期报告 | 2019-03-19 |
| 2019-02-27 | 4079.92 | 未披露 | 定期报告 | 2019-02-21 |
| 2019-02-27 | 4033.50 | 未披露 |
更多>>
from December 31, 2017 to December 31, 2018
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
|
2018-12-31 |
| 2018-11-02 | 3962.62 | 未披露 | 定期报告 | 2018-10-26 |
| 2018-11-02 | 3961.50 | 未披露 | 定期报告 | 2018-09-30 |
| 2018-08-03 | 3927.00 | 未披露 | 定期报告 | 2018-07-26 |
| 2018-08-03 | 3920.40 | 未披露 | 定期报告 | 2018-06-30 |
| 2018-05-04 | 3887.79 | 未披露 | 定期报告 | 2018-04-26 |
| 2018-05-04 | 3886.00 | 未披露 | 定期报告 | 2018-03-31 |
| 2018-04-02 | 3885.77 | 未披露 | 定期报告 | 2018-03-20 |
| 2018-02-27 | 3878.32 | 未披露 | 定期报告 | 2018-02-21 |
| 2018-02-27 | 3843.20 | 未披露 |
更多>>
from December 31, 2016 to December 31, 2017
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
|
2017-12-31 |
| 2017-11-03 | 3793.55 | 未披露 | 定期报告 | 2017-10-31 |
| 2017-11-03 | 3793.24 | 未披露 | 定期报告 | 2017-10-26 |
| 2017-11-03 | 3791.90 | 未披露 | 定期报告 | 2017-09-30 |
| 2017-08-04 | 3745.37 | 未披露 | 定期报告 | 2017-07-27 |
| 2017-08-04 | 3744.60 | 未披露 | 定期报告 | 2017-06-30 |
| 2017-05-05 | 3716.36 | 未披露 | 定期报告 | 2017-04-27 |
| 2017-05-05 | 3712.70 | 未披露 | 定期报告 | 2017-03-31 |
| 2017-04-17 | 3711.90 | 未披露 | 定期报告 | 2017-03-27 |
| 2017-02-28 | 3695.36 | 未披露 | 定期报告 | 2017-02-22 |
| 2017-02-28 | 3663.30 | 未披露 |
更多>>
From December 31, 2015 to December 31, 2016
Issuance of common stock under employee stock plans
|
2016-12-31 |
| 2016-11-07 | 3651.84 | 未披露 | 定期报告 | 2016-10-28 |
| 2016-11-07 | 3651.10 | 未披露 | 定期报告 | 2016-09-30 |
| 2016-08-05 | 3616.18 | 未披露 | 定期报告 | 2016-07-29 |
| 2016-08-05 | 3613.10 | 未披露 | 定期报告 | 2016-06-30 |
| 2016-05-06 | 3591.78 | 未披露 | 定期报告 | 2016-04-29 |
| 2016-05-06 | 3586.50 | 未披露 | 定期报告 | 2016-03-31 |
| 2016-04-18 | 3588.02 | 未披露 | 定期报告 | 2016-03-28 |
| 2016-02-26 | 3583.17 | 未披露 | 定期报告 | 2016-02-18 |
| 2016-02-26 | 3559.40 | 未披露 |
更多>>
From December 31, 2014 to December 31, 2015
Issuance of common stock under employee stock plans
Stock repurchases
|
2015-12-31 |
| 2015-11-06 | 3542.80 | 未披露 | 定期报告 | 2015-10-29 |
| 2015-11-06 | 3540.30 | 未披露 | 定期报告 | 2015-09-30 |
| 2015-08-07 | 3590.63 | 未披露 | 定期报告 | 2015-07-31 |
| 2015-08-07 | 3585.10 | 未披露 | 定期报告 | 2015-06-30 |
| 2015-05-08 | 3624.69 | 未披露 | 定期报告 | 2015-05-01 |
| 2015-05-08 | 3621.10 | 未披露 | 定期报告 | 2015-03-31 |
| 2015-04-20 | 3618.94 | 未披露 | 定期报告 | 2015-03-25 |
| 2015-03-30 | 3616.63 | 未披露 | 定期报告 | 2015-02-20 |
| 2015-03-30 | 3581.60 | 未披露 |
更多>>
From December 31, 2013 to December 31, 2014
Stock repurchases
Issuance of common stock under employee stock plans
|
2014-12-31 |
| 2014-11-10 | 3560.45 | 未披露 | 定期报告 | 2014-10-31 |
| 2014-08-07 | 3587.25 | 未披露 | 定期报告 | 2014-08-01 |
| 2014-05-12 | 3660.57 | 未披露 | 定期报告 | 2014-05-02 |
| 2014-04-21 | 3656.00 | 未披露 | 定期报告 | 2014-03-27 |
| 2014-03-17 | 3636.22 | 未披露 | 定期报告 | 2014-03-07 |
| 2014-03-17 | 3500.37 | 未披露 |
更多>>
from December 31, 2012 to December 31, 2013
Common stock issued under stock option and stock award plans, net of employees' taxes paid related to restricted stock units
Issuance of stock under employee stock purchase plan
Share repurchases
|
2013-12-31 |
| 2013-11-08 | 3561.47 | 未披露 | 定期报告 | 2013-11-01 |
| 2013-08-09 | 3484.07 | 未披露 | 定期报告 | 2013-08-01 |
| 2013-05-09 | 3433.15 | 未披露 | 定期报告 | 2013-05-01 |
| 2013-04-15 | 3428.70 | 未披露 | 定期报告 | 2013-03-28 |
| 2013-03-11 | 3409.87 | 未披露 | 定期报告 | 2013-03-01 |
| 2013-03-11 | 3354.15 | 未披露 |
更多>>
from December 31, 2011 to December 31, 2012
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Share repurchases
|
2012-12-31 |
| 2012-11-09 | 3317.90 | 未披露 | 定期报告 | 2012-11-01 |
| 2012-08-09 | 3330.19 | 未披露 | 定期报告 | 2012-08-01 |
| 2012-05-08 | 3358.31 | 未披露 | 定期报告 | 2012-05-01 |
| 2012-03-08 | 3348.84 | 未披露 | 定期报告 | 2012-02-23 |
| 2012-03-08 | 3318.19 | 未披露 |
更多>>
from December 31, 2010 to December 31, 2011
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Share repurchases
|
2011-12-31 |
| 2011-11-04 | 3321.84 | 未披露 | 定期报告 | 2011-10-26 |
| 2011-08-05 | 3313.50 | 未披露 | 定期报告 | 2011-08-01 |
| 2011-05-10 | 3311.92 | 未披露 | 定期报告 | 2011-05-02 |
| 2011-03-11 | 3336.96 | 未披露 | 定期报告 | 2011-03-03 |
| 2011-03-11 | 3302.76 | 未披露 |
更多>>
from dec 31 2009 to dec 31 2010
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
|
2010-12-31 |
| 2010-11-08 | 3295.92 | 未披露 | 定期报告 | 2010-11-03 |
| 2010-08-09 | 3268.75 | 未披露 | 定期报告 | 2010-08-03 |
| 2010-05-10 | 3252.74 | 未披露 | 定期报告 | 2010-05-03 |
| 2010-02-24 | 3230.41 | 未披露 | 定期报告 | 2010-02-19 |
| 2010-02-24 | 3607.28 | 未披露 |
更多>>
from December 31, 2008 to December 31, 2009
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
|
2009-12-31 |
| 2009-02-24 | 3134.43 | 未披露 | 定期报告 | 2009-02-09 |
| 2009-02-24 | 3134.42 | 未披露 |
更多>>
from December 31, 2007 to December 31, 2008
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Purchase of treasury stock, net of commissions
|
2008-12-31 |
| 2008-03-17 | 3498.81 | 未披露 | 定期报告 | 2008-03-07 |
| 2008-03-17 | 3462.55 | 未披露 |
更多>>
from December 31, 2006 to December 31, 2007
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Public stock issuance, net of offering costs
|
2007-12-31 |
| 2007-03-23 | 2900.86 | 未披露 | 定期报告 | 2007-03-20 |
| 2007-03-23 | 2839.33 | 未披露 |
更多>>
from December 31, 2005 to December 31, 2006
Exercise of stock options
Issuance of stock under employee stock purchase plan
|
2006-12-31 |
| 2006-03-16 | 2655.48 | 未披露 | 定期报告 | 2006-02-28 |
| 2006-03-16 | 2627.09 | 未披露 |
更多>>
from December 31, 2004 to December 31, 2005
Exercise of stock option
Issuance of stock under employee stock purchase plan
|
2005-12-31 |
| 2005-03-16 | 2555.36 | 未披露 | 定期报告 | 2005-02-28 |
| 2005-03-16 | 2533.39 | 未披露 |
更多>>
from December 31, 2003 to December 31, 2004
Exercise of stock option
Issuance of stock under employee stock purchase plan
|
2004-12-31 |
| 2004-03-08 | 2449.78 | 未披露 | 定期报告 | 2004-02-27 |
| 2004-03-08 | 2378.10 | 未披露 |
更多>>
from December 31, 2002 to December 31, 2003
Exercise of stock option
Issuance of stock under employee stock purchase plan
Warrants exercised
Repayment of stockholders' note receivable
|
2003-12-31 |
| 2003-03-28 | 2228.41 | 未披露 | 定期报告 | 2003-02-28 |
| 2003-03-28 | 2211.80 | 未披露 |
更多>>
from December 31, 2001 to December 31, 2002
Exercise of stock options
Issuance of stock under employee stock purchase plan
Repurchases of common stock for repayment of stockholders' note receivable and accrued interest
Effective with the Company's initial public offering in August 2001, all 14,538,376 of the then-outstanding shares of convertible preferred stock were converted into 11,375,456 shares of the Company's common stock
|
2002-12-31 |
| 2002-03-27 | 2175.79 | 未披露 | 定期报告 | 2002-03-04 |
| 2002-03-27 | 2166.67 | 未披露 |
更多>>
from December 31, 2000 to December 31, 2001
Redemption of redeemable convertible preferred stock
Conversion of convertible preferred stock to common stock
Issuance of common stock upon initial public offering, net of issuance costs of $1,992
Issuance of common stock under Employee Stock Purchase Plan
Issuance of warrants
Conversion of note receivable
Exercise of stock options
All common stock share and per share amounts reflect a 1-for-1.6 reverse stock split effected on July 31, 2001
|
2001-12-31 |
From June 30, 2026 to September 30, 2026
Issuance of common stock under employee stock plans
From March 31,2026 to June 30,2026
Issuance of common stock under employee stock plans
From December 31, 2025 to March 31, 2026
Issuance of common stock under employee stock plans
From December 31, 2024 to December 31, 2025
Issuance of common stock under employee stock plans
Common stock repurchases, including excise tax
From June 30, 2025 to September 30, 2025
Common stock repurchases, including excise tax
Issuance of common stock under employee stock plans
From March 31, 2025 to June 30, 2025
Issuance of common stock under employee stock plans
Stock repurchases
From December 31, 2024 to March 31, 2025
Issuance of common stock under employee stock plans
From December 31, 2023 to December 31, 2024
Issuance of common stock under employee stock plans
From June 30,2024 to September 30,2024
Issuance of common stock under employee stock plans
From March 31, 2024 to June 30, 2024
Issuance of common stock under employee stock plans
From December 31, 2023 to March 31, 2024
Issuance of common stock under employee stock plans
From December 31, 2022 to December 31, 2023
Issuance of common stock under employee stock plans
From June 30, 2023 to September 30, 2023
Issuance of common stock under employee stock plans
From March 31, 2023 to June 30, 2023
Issuance of common stock under employee stock plans
From December 31, 2022 to March 31, 2023
Issuance of common stock under employee stock plans
From December 31, 2021 to December 31, 2022
Issuance of common stock under employee stock plans
Stock repurchases
From June 30, 2022 to September 30, 2022
Issuance of common stock under employee stock plans
From March 31, 2022 to June 30, 2022
Issuance of common stock under employee stock plans
From December 31, 2021 to March 31, 2022
Issuance of common stock under employee stock plans
Stock repurchases
From December 31, 2020 to December 31, 2021
Issuance of common stock under employee stock plans
From June 30, 2021 to September 30, 2021
Issuance of common stock under employee stock plans
From March 31, 2021 to June 30, 2021
Issuance of common stock under employee stock plans
from December 31, 2020 to March 31, 2021
Issuance of common stock under employee stock plans
From December 31, 2019 to December 31, 2020
Issuance of common stock under employee stock plans
Stock repurchases
From June 30, 2020 to September 30, 2020
Issuance of common stock under employee stock plans
Stock repurchases
From March 31, 2020 to June 30, 2020
Issuance of common stock under employee stock plans
From December 31, 2019 to March 31, 2020
Issuance of common stock under employee stock plans
From December 31, 2018 to December 31, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
from June 30, 2019 to September 30, 2019
Issuance of common stock under employee stock plans
from March 31, 2019 to June 30, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
from December 31, 2018 to March 31, 2019
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
from December 31, 2017 to December 31, 2018
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
from December 31, 2016 to December 31, 2017
At the market equity offering, net of costs
Issuance of common stock under employee stock plans
From December 31, 2015 to December 31, 2016
Issuance of common stock under employee stock plans
From December 31, 2014 to December 31, 2015
Issuance of common stock under employee stock plans
Stock repurchases
From December 31, 2013 to December 31, 2014
Stock repurchases
Issuance of common stock under employee stock plans
from December 31, 2012 to December 31, 2013
Common stock issued under stock option and stock award plans, net of employees' taxes paid related to restricted stock units
Issuance of stock under employee stock purchase plan
Share repurchases
from December 31, 2011 to December 31, 2012
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Share repurchases
from December 31, 2010 to December 31, 2011
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Share repurchases
from dec 31 2009 to dec 31 2010
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
from December 31, 2008 to December 31, 2009
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
from December 31, 2007 to December 31, 2008
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Purchase of treasury stock, net of commissions
from December 31, 2006 to December 31, 2007
Common stock issued under stock option and stock award plans
Issuance of stock under employee stock purchase plan
Public stock issuance, net of offering costs
from December 31, 2005 to December 31, 2006
Exercise of stock options
Issuance of stock under employee stock purchase plan
from December 31, 2004 to December 31, 2005
Exercise of stock option
Issuance of stock under employee stock purchase plan
from December 31, 2003 to December 31, 2004
Exercise of stock option
Issuance of stock under employee stock purchase plan
from December 31, 2002 to December 31, 2003
Exercise of stock option
Issuance of stock under employee stock purchase plan
Warrants exercised
Repayment of stockholders' note receivable
from December 31, 2001 to December 31, 2002
Exercise of stock options
Issuance of stock under employee stock purchase plan
Repurchases of common stock for repayment of stockholders' note receivable and accrued interest
Effective with the Company's initial public offering in August 2001, all 14,538,376 of the then-outstanding shares of convertible preferred stock were converted into 11,375,456 shares of the Company's common stock
from December 31, 2000 to December 31, 2001
Redemption of redeemable convertible preferred stock
Conversion of convertible preferred stock to common stock
Issuance of common stock upon initial public offering, net of issuance costs of $1,992
Issuance of common stock under Employee Stock Purchase Plan
Issuance of warrants
Conversion of note receivable
Exercise of stock options
All common stock share and per share amounts reflect a 1-for-1.6 reverse stock split effected on July 31, 2001