Sumitomo Seika Co., Ltd.
Sumitomo Seika Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 6140001044373, and its current status with National Tax Agency — Corporate Number Publication Site is active. The company was incorporated on 5 October 2015 and lists its registered address as Harima Town, Kako District, Japan. 5 shareholders are on record for Sumitomo Seika Co., Ltd., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from National Tax Agency — Corporate Number Publication Site and was last updated on 29 September 2026.
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Shareholders
5
Shareholders of Sumitomo Seika Co., Ltd.
Five shareholders are currently on record for Sumitomo Seika Co., Ltd., reflecting the kabunushi meibo (shareholder register) maintained under Articles 121-122 of the Companies Act rather than a public filing. The largest of these is Price (T.Rowe) International Discovery Fund, holding 27.8% — the largest recorded stake — followed by DFA International Small Cap Value Portfolio at 6.2%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Data availability
The register reports 6 shareholders in total, though only the top 5 by holding are shown in this view.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Price (T.Rowe) International Discovery Fund | 27.8% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Small Cap Value Portfolio | 6.2% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Core Equity Portfolio | 2.2% | National Tax Agency — Corporate Number Publication Site | |
| Avantis International Small Cap Value ETF | 1.4% | National Tax Agency — Corporate Number Publication Site | |
| Mercer Non-U.S. Core Equity Fd | 1.1% | National Tax Agency — Corporate Number Publication Site |
Officers
5
Directors and officers of Sumitomo Seika Co., Ltd.
The President, Ceo & Representative Director of Sumitomo Seika Co., Ltd. currently on record is IKUZO OGAWA; five officers are currently on record for Sumitomo Seika Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Sumitomo Seika Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control. The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Data availability
The register reports 9 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
Group Structure
Group structure of Sumitomo Seika Co., Ltd.
Sumitomo Seika Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 7 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
- SUMITOMO SEIKA SINGAPORE PTE. LTD. (Singapore)
- Sumitomo Jinghua (china) Investment Co., Ltd. (China)
- Sumitomo Seika Europe (Belgium)
- SEIKA TECHNO SERVICE CO.,LTD. (Japan)
- SEIKA RESEARCH COMPANY,LIMITED. (Japan)
- SUMISEI TAIWAN TECHNOLOGY CO., LTD. (Taiwan)
- SUMITOMO SEIKA POLYMERS KOREA CO., LTD. (South Korea)
- Sumitomo Seika America, Inc. (United States)
- Sumisei Technology (Yangzhou) Co.,Ltd. (China)
Data availability
Those 9 subsidiaries span Japan, Singapore, China, Belgium, Taiwan, South Korea, and 1 more jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 9 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
Sumitomo Seika Co., Ltd.
Japan
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Frequently Asked Questions
Who owns Sumitomo Seika Co., Ltd.?
Five shareholders are currently on record for Sumitomo Seika Co., Ltd., reflecting the kabunushi meibo (shareholder register) maintained under Articles 121-122 of the Companies Act rather than a public filing. The largest of these is Price (T.Rowe) International Discovery Fund, holding 27.8% — the largest recorded stake — followed by DFA International Small Cap Value Portfolio at 6.2%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is Sumitomo Seika Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Sumitomo Seika Co., Ltd. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does Sumitomo Seika Co., Ltd. have on record?
5 shareholders are shown on record for Sumitomo Seika Co., Ltd.. The register reports 6 in total; only the top 5 by holding are shown here.
What is Sumitomo Seika Co., Ltd.'s company registration number?
Sumitomo Seika Co., Ltd.'s registration number is 6140001044373, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Sumitomo Seika Co., Ltd. still an active company?
Sumitomo Seika Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Sumitomo Seika Co., Ltd. incorporated?
Sumitomo Seika Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Sumitomo Seika Co., Ltd.'s registered address?
The registered address on file for Sumitomo Seika Co., Ltd. is Harima Town, Kako District, Japan.
What legal structure is Sumitomo Seika Co., Ltd. registered as?
Sumitomo Seika Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of Sumitomo Seika Co., Ltd.?
The President, Ceo & Representative Director of Sumitomo Seika Co., Ltd. currently on record is IKUZO OGAWA; five officers are currently on record for Sumitomo Seika Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Sumitomo Seika Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Sumitomo Seika Co., Ltd. have a parent company or subsidiaries?
Sumitomo Seika Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 7 jurisdictions. Those 9 subsidiaries span Japan, Singapore, China, Belgium, Taiwan, South Korea, and 1 more jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 9 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to Sumitomo Seika Co., Ltd.'s ownership over time?
This profile reflects a point-in-time snapshot from National Tax Agency — Corporate Number Publication Site. Zavia's monitoring API can track changes to Sumitomo Seika Co., Ltd.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Sumitomo Seika Co., Ltd.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Japan, so records like Sumitomo Seika Co., Ltd.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from National Tax Agency — Corporate Number Publication Site and was last synced on 29 September 2026.