股本结构
单位：万股
| 公告日期 | 2019-05-14 | 2019-04-24 | 2019-05-14 | 2019-03-27 | 2019-03-07 | 2019-03-27 |
|---|---|---|---|---|---|---|
| 证券总股本 | 5656.66 | 5656.66 | 5622.22 | 5622.22 | 5426.74 | 5426.74 |
| 普通股本 | 5656.66 | 5656.66 | 5622.22 | 5622.22 | 5426.74 | 5426.74 |
| 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 | 2019-05-10 | 2019-04-24 | 2019-03-31 | 2019-03-27 | 2019-03-07 | 2018-12-31 |
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 |
|---|---|---|---|---|
| 2019-05-14 | 5656.66 | 未披露 | 定期报告 | 2019-05-10 |
| 2019-04-24 | 5656.66 | 未披露 | 定期报告 | 2019-04-24 |
| 2019-05-14 | 5622.22 | 未披露 |
更多>>
from December 31, 2018 to March 31, 2019
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of warrants
Issuance of common stock upon exercise of employee and director options
|
2019-03-31 |
| 2019-03-27 | 5622.22 | 未披露 | 定期报告 | 2019-03-27 |
| 2019-03-07 | 5426.74 | 未披露 | 定期报告 | 2019-03-07 |
| 2019-03-07 | 5619.72 | 未披露 | 定期报告 | 2019-03-04 |
| 2019-01-22 | 5426.74 | 未披露 | 定期报告 | 2019-01-22 |
| 2019-03-27 | 5426.74 | 未披露 |
更多>>
from December 31, 2017 to December 31, 2018
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
|
2018-12-31 |
| 2018-10-31 | 5425.37 | 未披露 | 定期报告 | 2018-10-29 |
| 2018-10-31 | 5422.90 | 未披露 |
更多>>
From December 31, 2017 to September 30, 2018
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
|
2018-09-30 |
| 2018-09-05 | 5420.72 | 未披露 | 定期报告 | 2018-08-24 |
| 2018-08-01 | 5418.77 | 未披露 | 定期报告 | 2018-07-31 |
| 2018-08-01 | 5414.05 | 未披露 |
更多>>
From December 31, 2017 to June 30, 2018
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee and director options
|
2018-06-30 |
| 2018-05-10 | 5414.05 | 未披露 | 定期报告 | 2018-05-08 |
| 2018-04-30 | 5413.88 | 未披露 | 定期报告 | 2018-04-20 |
| 2018-05-10 | 5412.66 | 未披露 |
更多>>
From December 31, 2017 to March 31, 2018
Issuance of common stock under employee stock purchase plan
|
2018-03-31 |
| 2018-03-20 | 5412.66 | 未披露 | 定期报告 | 2018-03-18 |
| 2018-03-20 | 5410.85 | 未披露 |
更多>>
from December 31, 2016 to December 31, 2017
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock under definitive stock purchase agreement
Common stock used for tax withholdings
|
2017-12-31 |
| 2017-11-17 | 5408.08 | 未披露 | 定期报告 | 2017-11-07 |
| 2017-11-02 | 5405.45 | 未披露 | 定期报告 | 2017-11-01 |
| 2017-11-02 | 5403.53 | 未披露 |
更多>>
from June 30, 2017 to September 27, 2017
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock under definitive stock purchase agreement
Common stock used for tax withholdings
|
2017-09-27 |
| 2017-08-30 | 4866.59 | 未披露 | 定期报告 | 2017-08-25 |
| 2017-08-07 | 4864.38 | 未披露 | 定期报告 | 2017-08-04 |
| 2017-08-07 | 4856.65 | 未披露 |
更多>>
From December 31, 2016 to June 30, 2017
Issuance of common stock under employee stock purchase plan
|
2017-06-30 |
| 2017-04-27 | 4858.20 | 未披露 | 定期报告 | 2017-04-25 |
| 2017-05-11 | 4852.31 | 未披露 |
更多>>
From December 31, 2016 to March 31, 2017
Issuance of common stock under employee stock purchase plan
|
2017-03-31 |
| 2017-03-30 | 4853.85 | 未披露 | 定期报告 | 2017-03-28 |
| 2017-03-30 | 4851.93 | 未披露 |
更多>>
From March 31, 2016 to December 31, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
|
2016-12-31 |
| 2016-10-06 | 4851.87 | 未披露 | 定期报告 | 2016-10-04 |
| 2016-08-04 | 4846.10 | 未披露 | 定期报告 | 2016-08-03 |
| 2016-07-25 | 4845.96 | 未披露 | 定期报告 | 2016-07-21 |
| 2016-08-04 | 4835.07 | 未披露 |
更多>>
From April 1, 2016 to June 30, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
|
2016-06-30 |
| 2016-06-07 | 4843.62 | 未披露 | 定期报告 | 2016-06-05 |
| 2016-06-07 | 4833.03 | 未披露 |
更多>>
from March 31, 2015 to March 31, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under registered direct offering
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
|
2016-03-31 |
| 2016-02-04 | 4845.69 | 未披露 | 定期报告 | 2016-02-01 |
| 2016-02-04 | 4830.70 | 未披露 |
更多>>
from September 30, 2015 to December 31, 2015
Issuance of common stock under direct offering
Issuance of common stock under employee stock purchase plan
|
2015-12-31 |
| 2015-11-10 | 4843.78 | 未披露 | 定期报告 | 2015-11-09 |
| 2015-11-10 | 4030.19 | 未披露 |
更多>>
from June 30, 2015 to September 30, 2015
Issuance of common stock under stock bonus plan
Retirement of vested shares
|
2015-09-30 |
| 2015-07-30 | 4054.18 | 未披露 | 定期报告 | 2015-07-28 |
| 2015-07-30 | 4005.26 | 未披露 |
更多>>
from April 1, 2015 to June 30,2015
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Retirement of vested shares
|
2015-06-30 |
| 2015-05-28 | 4050.20 | 未披露 | 定期报告 | 2015-05-26 |
| 2015-05-28 | 4000.00 | 未披露 |
更多>>
from March 31, 2014 to March 31, 2015
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
Retirement of vested shares
|
2015-03-31 |
| 2015-02-05 | 4045.17 | 未披露 | 定期报告 | 2015-02-03 |
| 2015-02-05 | 4000.00 | 未披露 | 定期报告 | 2014-12-31 |
| 2014-11-05 | 4049.29 | 未披露 | 定期报告 | 2014-11-03 |
| 2014-11-05 | 4000.00 | 未披露 |
更多>>
from June 30, 2014 to September 30, 2014
Issuance of common stock under stock bonus plan
Retirement of vested shares
|
2014-09-30 |
| 2014-07-31 | 4043.97 | 未披露 | 定期报告 | 2014-07-29 |
| 2014-07-31 | 3979.85 | 未披露 |
更多>>
from April 1, 2014 to June 30, 2014
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
|
2014-06-30 |
| 2014-05-30 | 4043.46 | 未披露 | 定期报告 | 2014-05-27 |
| 2014-05-30 | 3977.78 | 未披露 |
更多>>
from March 31, 2013 to March 31, 2014
Issuance of common stock under employee stock purchase plan
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
|
2014-03-31 |
| 2014-01-30 | 3754.90 | 未披露 | 定期报告 | 2014-01-28 |
| 2014-01-10 | 3753.65 | 未披露 | 定期报告 | 2014-01-07 |
| 2014-01-30 | 3689.17 | 未披露 |
更多>>
from September 30, 2013 to December 31, 2013
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee stock options
|
2013-12-31 |
| 2013-11-05 | 3752.37 | 未披露 | 定期报告 | 2013-11-04 |
| 2013-11-05 | 3686.44 | 未披露 |
更多>>
from June 30, 2013 to September 30, 2013
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
|
2013-09-30 |
| 2013-08-01 | 3621.33 | 未披露 | 定期报告 | 2013-07-31 |
| 2013-08-01 | 3666.95 | 未披露 |
更多>>
from April 1, 2013 to June 30, 2013
Issuance of common stock under employee stock purchase plan
|
2013-06-30 |
| 2013-05-23 | 3702.84 | 未披露 | 定期报告 | 2013-05-20 |
| 2013-05-23 | 3666.41 | 未披露 |
更多>>
From March 31, 2012 to March 31, 2013
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
|
2013-03-31 |
| 2013-01-31 | 3702.30 | 未披露 | 定期报告 | 2013-01-29 |
| 2013-01-31 | 3666.39 | 未披露 |
更多>>
from September 30, 2012 to December 31, 2012
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
|
2012-12-31 |
| 2012-10-25 | 3665.00 | 未披露 | 定期报告 | 2012-10-23 |
| 2012-10-25 | 3659.15 | 未披露 |
更多>>
from June 30, 2012 to September 30, 2012
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
|
2012-09-30 |
| 2012-07-31 | 3656.07 | 未披露 | 定期报告 | 2012-07-30 |
| 2012-07-31 | 3641.53 | 未披露 |
更多>>
from April 1, 2012 to June 30, 2012
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
|
2012-06-30 |
| 2012-05-24 | 3656.06 | 未披露 | 定期报告 | 2012-05-22 |
| 2012-05-24 | 3635.62 | 未披露 |
更多>>
from March 31, 2011 to March 31, 2012.
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
|
2012-03-31 |
| 2012-01-31 | 3653.15 | 未披露 | 定期报告 | 2012-01-30 |
| 2012-01-31 | 3632.65 | 未披露 | 定期报告 | 2011-12-31 |
| 2011-10-27 | 3650.42 | 未披露 | 定期报告 | 2011-10-25 |
| 2011-10-27 | 3632.65 | 未披露 |
更多>>
from June 30, 2011 to September 30, 2011
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Purchase of treasury stock
|
2011-09-30 |
| 2011-08-01 | 3629.08 | 未披露 | 定期报告 | 2011-07-29 |
| 2011-08-01 | 3622.43 | 未披露 |
更多>>
from April 1, 2011 to June 30, 2011
Issuance of common stock under employee stock purchase plan
|
2011-06-30 |
| 2011-06-02 | 3629.03 | 未披露 | 定期报告 | 2011-05-31 |
| 2011-06-02 | 3621.33 | 未披露 |
更多>>
From Mar 31 2010 to Mar 31 2011
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock under stock bonus plan
|
2011-03-31 |
| 2011-02-01 | 3623.88 | 未披露 | 定期报告 | 2011-01-28 |
| 2011-02-01 | 3617.28 | 未披露 |
更多>>
from September 30, 2010 to December 31, 2010
Issuance of common stock under stock bonus plan
Purchase of treasury stock
|
2010-12-31 |
| 2010-10-28 | 3617.73 | 未披露 | 定期报告 | 2010-10-26 |
| 2010-10-28 | 3605.09 | 未披露 |
更多>>
from June 30, 2010 to September 30, 2010
Issuance of common stock under stock bonus plan
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
|
2010-09-30 |
| 2010-07-29 | 3604.67 | 未披露 | 定期报告 | 2010-07-27 |
| 2010-07-29 | 3594.77 | 未披露 |
更多>>
from March 31, 2010 to June 30, 2010
Issuance of common stock upon exercise of employee stock options
|
2010-06-30 |
| 2010-05-24 | 3604.67 | 未披露 | 定期报告 | 2010-05-20 |
| 2010-05-24 | 3594.67 | 未披露 |
更多>>
From Dec 31 2009 to Mar 31 2010
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock under stock bonus plan
|
2010-03-31 |
| 2009-05-21 | 2698.28 | 未披露 | 定期报告 | 2009-05-18 |
| 2009-05-21 | 2672.77 | 未披露 |
更多>>
from March 31, 2008 to March 31, 2009
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
|
2009-03-31 |
| 2008-05-22 | 2681.02 | 未披露 | 定期报告 | 2008-05-20 |
| 2008-05-22 | 2652.67 | 未披露 |
更多>>
from March 31, 2007 to March 31, 2008
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
Issuance of common stock under stock bonus plan
|
2008-03-31 |
| 2007-05-17 | 2532.47 | 未披露 | 定期报告 | 2007-05-15 |
| 2007-05-17 | 2517.69 | 未披露 |
更多>>
from March 31, 2006 to March 31, 2007
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock to directors
|
2007-03-31 |
| 2006-06-13 | 2512.90 | 未披露 | 定期报告 | 2006-06-09 |
| 2006-06-13 | 2477.60 | 未披露 |
更多>>
from March 31, 2005 to March 31, 2006
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
|
2006-03-31 |
| 2005-05-27 | 2317.90 | 未披露 | 定期报告 | 2005-05-24 |
| 2005-05-27 | 2317.71 | 未披露 |
更多>>
from March 31, 2004 to March 31, 2005
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
|
2005-03-31 |
| 2004-05-28 | 1957.47 | 未披露 | 定期报告 | 2004-05-24 |
| 2004-05-28 | 1957.26 | 未披露 |
更多>>
from March 31, 2003 to March 31, 2004
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Compensation expense accrued for issuance of common stock options granted for services
|
2004-03-31 |
| 2003-05-28 | 1884.60 | 未披露 | 定期报告 | 2003-05-22 |
| 2003-05-28 | 1884.45 | 未披露 |
更多>>
from March 31, 2002 to March 31, 2003
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Compensation expense accrued for issuance of common stock options granted for services
|
2003-03-31 |
| 2002-06-26 | 1884.29 | 未披露 | 定期报告 | 2002-06-21 |
| 2002-06-26 | 1767.98 | 未披露 |
更多>>
from March 31, 2001 to March 31, 2002
Issuance of common stock upon exercise of employee, directors and consultants options
Issuance of common stock under employee stock purchase plan
Retirement of treasury shares
|
2002-03-31 |
| 2001-06-15 | 1745.15 | 未披露 | 定期报告 | 2001-06-13 |
| 2001-06-15 | 1742.34 | 未披露 |
更多>>
from March 31, 2000 to March 31, 2001
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Retirement of treasury shares
|
2001-03-31 |
| 2000-06-29 | 1723.33 | 未披露 | 定期报告 | 2000-06-26 |
| 2000-06-29 | 1719.42 | 未披露 |
更多>>
from March 31, 1999 to March 31, 2000
Issuance of common stock in private offerings, net of offering costs $11,235
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for investment in Germany joint venture
Retirement of treasury shares
|
2000-03-31 |
| 1999-06-22 | 1656.85 | 未披露 | 定期报告 | 1999-06-14 |
| 1999-06-22 | 1622.29 | 未披露 |
更多>>
from March 31, 1998 to March 31, 1999
Issuance of common stock in private offerings, net of offering costs of $33,671
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Issuance of common stock for acquisition of Franklin
|
1999-03-31 |
| 1998-06-29 | 1588.07 | 未披露 | 定期报告 | 1998-06-25 |
| 1998-06-29 | 1539.46 | 未披露 |
更多>>
from March 31, 1997 to March 31, 1998
Issuance of common stock in private offerings, net of offering costs of $341,202
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Issuance of common stock for acquisition of Aerocom
Issuance of common stock for investment in EV Global
Repayment of executive note
|
1998-03-31 |
| 1997-06-27 | 1335.54 | 未披露 | 定期报告 | 1997-06-25 |
| 1997-06-27 | 1304.30 | 未披露 |
更多>>
from October 31, 1996 to March 31, 1997
Issuance of common stock in private offerings, net of offering costs of $365,688
Issuance of common stock upon exercise of employee options
Issuance of common stock for services
Retirement of treasury stock
|
1997-03-31 |
| 1997-01-29 | 1171.17 | 未披露 | 定期报告 | 1997-01-24 |
| 1997-01-29 | 1175.14 | 未披露 |
更多>>
from October 31, 1995 to October 31, 1996
Issuance of common stock, net of offering costs of $247,309
Issuance of common stock upon exercise of employee options
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
|
1996-10-31 |
| 1996-02-02 | 1071.62 | 未披露 | 定期报告 | 1996-01-24 |
| 1996-02-02 | 1057.20 | 未披露 |
更多>>
from October 31, 1994 to October 31, 1995
Issuance of common stock, net of offering costs of $141,446
Issuance of common stock upon exercise of employee options
Issuance of common stock under employee stock purchase plan
|
1995-10-31 |
| 1996-02-02 | 992.55 | 未披露 |
更多>>
from October 31, 1993 to October 31, 1994
Issuance of common stock upon exercise of Alcan preemptive right
Issuance of common stock upon exercise of underwriter warrants
Issuance of common stock upon exercise of employee options
Issuance of common stock for directors' compensation
Issuance of common stock under employee stock purchase plan
|
1994-10-31 |
from December 31, 2018 to March 31, 2019
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of warrants
Issuance of common stock upon exercise of employee and director options
from December 31, 2017 to December 31, 2018
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
From December 31, 2017 to September 30, 2018
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
From December 31, 2017 to June 30, 2018
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee and director options
From December 31, 2017 to March 31, 2018
Issuance of common stock under employee stock purchase plan
from December 31, 2016 to December 31, 2017
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock under definitive stock purchase agreement
Common stock used for tax withholdings
from June 30, 2017 to September 27, 2017
Issuance of common stock upon exercise of employee and director options
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock under definitive stock purchase agreement
Common stock used for tax withholdings
From December 31, 2016 to June 30, 2017
Issuance of common stock under employee stock purchase plan
From December 31, 2016 to March 31, 2017
Issuance of common stock under employee stock purchase plan
From March 31, 2016 to December 31, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
From April 1, 2016 to June 30, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
from March 31, 2015 to March 31, 2016
Issuance of common stock under employee stock purchase plan
Issuance of common stock under registered direct offering
Issuance of common stock under stock bonus plan
Common stock used for tax withholdings
from September 30, 2015 to December 31, 2015
Issuance of common stock under direct offering
Issuance of common stock under employee stock purchase plan
from June 30, 2015 to September 30, 2015
Issuance of common stock under stock bonus plan
Retirement of vested shares
from April 1, 2015 to June 30,2015
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Retirement of vested shares
from March 31, 2014 to March 31, 2015
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
Retirement of vested shares
from June 30, 2014 to September 30, 2014
Issuance of common stock under stock bonus plan
Retirement of vested shares
from April 1, 2014 to June 30, 2014
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
from March 31, 2013 to March 31, 2014
Issuance of common stock under employee stock purchase plan
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under stock bonus plan
Issuance of common stock upon exercise of employee options
from September 30, 2013 to December 31, 2013
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee stock options
from June 30, 2013 to September 30, 2013
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
from April 1, 2013 to June 30, 2013
Issuance of common stock under employee stock purchase plan
From March 31, 2012 to March 31, 2013
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
from September 30, 2012 to December 31, 2012
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
from June 30, 2012 to September 30, 2012
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
from April 1, 2012 to June 30, 2012
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
from March 31, 2011 to March 31, 2012.
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
from June 30, 2011 to September 30, 2011
Issuance of common stock under employee stock purchase plan
Issuance of common stock under stock bonus plan
Purchase of treasury stock
from April 1, 2011 to June 30, 2011
Issuance of common stock under employee stock purchase plan
From Mar 31 2010 to Mar 31 2011
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock under stock bonus plan
from September 30, 2010 to December 31, 2010
Issuance of common stock under stock bonus plan
Purchase of treasury stock
from June 30, 2010 to September 30, 2010
Issuance of common stock under stock bonus plan
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
from March 31, 2010 to June 30, 2010
Issuance of common stock upon exercise of employee stock options
From Dec 31 2009 to Mar 31 2010
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock under stock bonus plan
from March 31, 2008 to March 31, 2009
Issuance of common stock under employee stock purchase plan
Purchase of treasury stock
Issuance of common stock under stock bonus plan
from March 31, 2007 to March 31, 2008
Issuance of common stock in follow-on offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
Issuance of common stock under stock bonus plan
from March 31, 2006 to March 31, 2007
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
Issuance of common stock upon exercise of warrants
Issuance of common stock to directors
from March 31, 2005 to March 31, 2006
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
from March 31, 2004 to March 31, 2005
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Issuance of common stock upon exercise of employee options
from March 31, 2003 to March 31, 2004
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Compensation expense accrued for issuance of common stock options granted for services
from March 31, 2002 to March 31, 2003
Issuance of common stock in secondary offering, net of offering costs
Issuance of common stock under employee stock purchase plan
Compensation expense accrued for issuance of common stock options granted for services
from March 31, 2001 to March 31, 2002
Issuance of common stock upon exercise of employee, directors and consultants options
Issuance of common stock under employee stock purchase plan
Retirement of treasury shares
from March 31, 2000 to March 31, 2001
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Retirement of treasury shares
from March 31, 1999 to March 31, 2000
Issuance of common stock in private offerings, net of offering costs $11,235
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for investment in Germany joint venture
Retirement of treasury shares
from March 31, 1998 to March 31, 1999
Issuance of common stock in private offerings, net of offering costs of $33,671
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Issuance of common stock for acquisition of Franklin
from March 31, 1997 to March 31, 1998
Issuance of common stock in private offerings, net of offering costs of $341,202
Issuance of common stock upon exercise of employee and directors options
Issuance of common stock upon exercise of warrants
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
Issuance of common stock for acquisition of Aerocom
Issuance of common stock for investment in EV Global
Repayment of executive note
from October 31, 1996 to March 31, 1997
Issuance of common stock in private offerings, net of offering costs of $365,688
Issuance of common stock upon exercise of employee options
Issuance of common stock for services
Retirement of treasury stock
from October 31, 1995 to October 31, 1996
Issuance of common stock, net of offering costs of $247,309
Issuance of common stock upon exercise of employee options
Issuance of common stock under employee stock purchase plan
Issuance of common stock for services
from October 31, 1994 to October 31, 1995
Issuance of common stock, net of offering costs of $141,446
Issuance of common stock upon exercise of employee options
Issuance of common stock under employee stock purchase plan
from October 31, 1993 to October 31, 1994
Issuance of common stock upon exercise of Alcan preemptive right
Issuance of common stock upon exercise of underwriter warrants
Issuance of common stock upon exercise of employee options
Issuance of common stock for directors' compensation
Issuance of common stock under employee stock purchase plan