股本结构
单位：万股
| 公告日期 | 2019-02-07 | 2018-08-08 | 2018-06-29 | 2018-06-29 | 2017-06-30 | 2017-02-08 |
|---|---|---|---|---|---|---|
| 证券总股本 | 9344.28 | 9014.10 | 9342.76 | 9012.58 | 9012.10 | 9070.12 |
| 普通股本 | 4672.14 | 4507.05 | 4671.38 | 4506.29 | 4506.05 | 4535.06 |
| 优先股 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 |
| 其他 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 |
| 变动日期 | 2018-12-31 | 2018-06-30 | 2018-03-31 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
注释：中概股证券总股本=普通股股本/
存托凭证比例
，当前存托凭证比例为：0.5
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 |
|---|---|---|---|---|
| 2019-02-07 | 4672.14 | 未披露 | 定期报告 | 2018-12-31 |
| 2018-08-08 | 4507.05 | 未披露 | 定期报告 | 2018-06-30 |
| 2018-06-29 | 4671.38 | 未披露 |
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From MARCH 31, 2017 to MARCH 31, 2018
Issuance of common stock upon exercise of stock options
|
2018-03-31 |
| 2018-06-29 | 4506.29 | 未披露 |
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From MARCH 31, 2017 to June 30, 2017
Issuance of common stock upon exercise of stock options
|
2017-06-30 |
| 2017-06-30 | 4506.05 | 未披露 |
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from MARCH 31, 2016 to MARCH 31, 2017
Purchase of treasury stock
|
2017-03-31 |
| 2017-02-08 | 4535.06 | 未披露 | 定期报告 | 2016-12-31 |
| 2016-05-13 | 4595.27 | 未披露 |
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from March 31, 2015 to September 30, 2015
Issuance of common stock upon exercise of stock options
|
2015-09-30 |
| 2015-07-10 | 4594.23 | 未披露 |
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From MARCH 31, 2014 to MARCH 31, 2015
Issuance of common stock upon exercise of stock options
|
2015-03-31 |
| 2014-07-16 | 4593.91 | 未披露 |
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from MARCH 31, 2013 to MARCH 31, 2014
Issuance of common stock, net of issuance cost
Issuance of common stock upon exercise of stock options
Acquisition of noncontrolling interests in consolidated subsidiaries
Purchase of treasury stock
|
2014-03-31 |
| 2014-02-07 | 4593.90 | 未披露 | 定期报告 | 2013-12-31 |
| 2013-08-06 | 4053.90 | 未披露 | 定期报告 | 2013-06-30 |
| 2012-11-08 | 4053.68 | 未披露 | 定期报告 | 2012-10-01 |
| 2009-09-29 | 20.25 | 未披露 |
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from MARCH 31, 2008 to MARCH 31, 2009
Purchase of treasury stock
|
2009-03-31 |
| 2008-06-30 | 20.65 | 未披露 |
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from MARCH 31, 2007 to MARCH 31, 2008
Issuance of common stock for the purchase of minority interests of consolidated subsidiaries, net of issuance cost
|
2008-03-31 |
| 2007-07-06 | 20.43 | 未披露 |
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from MARCH 31, 2006 to MARCH 31, 2007
Dissolution of reciprocal interests due to sale of investment in an equity method investee
|
2007-03-31 |
| 2006-07-11 | 20.35 | 未披露 |
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from MARCH 31, 2005 to MARCH 31, 2006
Issuance of common stock, net of issuance cost
Purchase of common stock by an equity method investee
On August 4, 2005, IIJ’s board of directors approved a five-for-one split of IIJ’s common stock. Shareholders of record on August 31, 2005 received an additional common share. The stock split was effective on October 11, 2005.
|
2006-03-31 |
| 2004-07-23 | 3.82 | 未披露 |
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from MARCH 31, 2003 to MARCH 31, 2004
Issuance of common stock
Purchase of common stock by an equity method investee
|
2004-03-31 |
| 2000-11-15 | 2.25 | 未披露 |
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from MARCH 31, 1999 to MARCH 31, 2000
Initial public offering, net of stock issue cost
|
2000-03-31 |
From MARCH 31, 2017 to MARCH 31, 2018
Issuance of common stock upon exercise of stock options
From MARCH 31, 2017 to June 30, 2017
Issuance of common stock upon exercise of stock options
from MARCH 31, 2016 to MARCH 31, 2017
Purchase of treasury stock
from March 31, 2015 to September 30, 2015
Issuance of common stock upon exercise of stock options
From MARCH 31, 2014 to MARCH 31, 2015
Issuance of common stock upon exercise of stock options
from MARCH 31, 2013 to MARCH 31, 2014
Issuance of common stock, net of issuance cost
Issuance of common stock upon exercise of stock options
Acquisition of noncontrolling interests in consolidated subsidiaries
Purchase of treasury stock
from MARCH 31, 2008 to MARCH 31, 2009
Purchase of treasury stock
from MARCH 31, 2007 to MARCH 31, 2008
Issuance of common stock for the purchase of minority interests of consolidated subsidiaries, net of issuance cost
from MARCH 31, 2006 to MARCH 31, 2007
Dissolution of reciprocal interests due to sale of investment in an equity method investee
from MARCH 31, 2005 to MARCH 31, 2006
Issuance of common stock, net of issuance cost
Purchase of common stock by an equity method investee
On August 4, 2005, IIJ’s board of directors approved a five-for-one split of IIJ’s common stock. Shareholders of record on August 31, 2005 received an additional common share. The stock split was effective on October 11, 2005.
from MARCH 31, 2003 to MARCH 31, 2004
Issuance of common stock
Purchase of common stock by an equity method investee
from MARCH 31, 1999 to MARCH 31, 2000
Initial public offering, net of stock issue cost