NIPPON TELEGRAPH & TELEPHONE CORP Form SD: Specialized disclosure report (conflict minerals)
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2017-05-31: Form SD; Description FORM SD; Document d297600dsd.htm.
- 2016-05-31: Form SD; Description FORM SD; Document d197422dsd.htm.
- 2015-05-29: Form SD; Description FORM SD; Document d934956dsd.htm.
- 2014-05-30: Form SD; Description FORM SD; Document d733583dsd.htm.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2017-05-31 | SD | FORM SD | d297600dsd.htm | |
| 2016-05-31 | SD | FORM SD | d197422dsd.htm | |
| 2015-05-29 | SD | FORM SD | d934956dsd.htm | |
| 2014-05-30 | SD | FORM SD | d733583dsd.htm |