![Hideki Niwa](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Hideki Niwa
Comptroller/Controller/Auditor at
SUMITOMO METAL MINING CO., LTD.
Net worth: 128 $ as of 2026-07-30
Profile
Hideki Niwa currently works at Coral Bay Nickel Corp., as Director, Taganito HPAL Nickel Corp., as Director, Nickel Asia Holdings, Inc., as Director, and Sumitomo Metal Mining Co. Ltd., as Head-Legal & Audit.
Mr. Niwa also formerly worked at Nickel Asia Corp., as Non-Executive Director from 2021 to 2025 and PT Vale Indonesia Tbk, as Commissioner from 2022 to 2025.
Mr. Niwa received his undergraduate degree from Waseda University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-07-10 | 2,023 ( 0% ) | 128 $ | 2026-07-30 |
Hideki Niwa active positions
| Companies | Position | Start |
|---|---|---|
| SUMITOMO METAL MINING CO., LTD. | Comptroller/Controller/Auditor | - |
Taganito HPAL Nickel Corp.
 Taganito HPAL Nickel Corp. Chemicals: SpecialtyProcess Industries Produces mixed nickel-cobalt sulfides | Director/Board Member | - |
Coral Bay Nickel Corp.
 Coral Bay Nickel Corp. Other Metals/MineralsNon-Energy Minerals Engages in mining nickel and cobalt sulfide | Director/Board Member | - |
Nickel Asia Holdings, Inc.
 Nickel Asia Holdings, Inc. Financial ConglomeratesFinance Nickel Asia Holdings, Inc. is a Filipino company. | Director/Board Member | - |
Former positions of Hideki Niwa
| Companies | Position | End |
|---|---|---|
| PT VALE INDONESIA TBK | Director/Board Member | 2025-07-27 |
| NICKEL ASIA CORPORATION | Director/Board Member | 2025-07-10 |
Training of Hideki Niwa
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
63
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Nickel Asia Corp.
 Nickel Asia Corp. Other Metals/MineralsNon-Energy Minerals Produces lateritic nickel ore | Non-Energy Minerals |
Sumitomo Metal Mining Co. Ltd.
 Sumitomo Metal Mining Co. Ltd. Other Metals/MineralsNon-Energy Minerals Explores, mines and refines and markets nonferrous metals and processes metals such as gold, silver, copper, nickel, lead and zinc | Non-Energy Minerals |
PT Vale Indonesia Tbk
 PT Vale Indonesia Tbk Other Metals/MineralsNon-Energy Minerals Engages in mining and processing of nickel | Non-Energy Minerals |
Waseda University
 Waseda University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Coral Bay Nickel Corp.
Coral Bay Nickel Corp. Other Metals/MineralsNon-Energy Minerals Engages in mining nickel and cobalt sulfide | Non-Energy Minerals |
Taganito HPAL Nickel Corp.
Taganito HPAL Nickel Corp. Chemicals: SpecialtyProcess Industries Produces mixed nickel-cobalt sulfides | Process Industries |
Nickel Asia Holdings, Inc.
Nickel Asia Holdings, Inc. Financial ConglomeratesFinance Nickel Asia Holdings, Inc. is a Filipino company. | Finance |
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