Okada Aiyon Co., Ltd.
Okada Aiyon Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 3120001028645, 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 Minato Ward, Osaka City, Japan. 5 shareholders are on record for Okada Aiyon 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 2 October 2026.
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Shareholders
5
Five shareholders are currently on record for Okada Aiyon 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 DFA Japanese Small Company Series, holding 58.4% — a majority holding — followed by DFA International Core Equity Portfolio at 26.5%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 10 shareholders in total, though only the top 5 by holding are shown in this view.
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.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA Japanese Small Company Series | 58.4% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Core Equity Portfolio | 26.5% | National Tax Agency — Corporate Number Publication Site | |
| John Hancock Fds II-International Small Company Fund | 3% | National Tax Agency — Corporate Number Publication Site | |
| Brighthouse Fds Tr II-BH/Dimensional International Small Co Port | 2.6% | National Tax Agency — Corporate Number Publication Site | |
| Dimensional ETF Tr-Dimensional International Core Equity 2 ETF | 2% | National Tax Agency — Corporate Number Publication Site |
Officers
4
Four officers are currently on record for Okada Aiyon Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Nobuo Maenishi serves as Senior Md, Gm Of Corporate Planning Office & Director; Terukazu Yamaguchi serves as Md & Director; Yuji Okada serves as President & Representative Director; Masahiro Kawashima serves as Md, Gm Of Machinery Department & Director.
Management authority at Okada Aiyon 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.
Group Structure
Okada Aiyon Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 3 subsidiaries recorded beneath it across 2 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.
Those 3 subsidiaries span Japan, Netherlands 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.
Okada Aiyon Co., Ltd.
Japan
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Frequently Asked Questions
Who owns Okada Aiyon Co., Ltd.?
Five shareholders are currently on record for Okada Aiyon 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 DFA Japanese Small Company Series, holding 58.4% — a majority holding — followed by DFA International Core Equity Portfolio at 26.5%; 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 Okada Aiyon Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Okada Aiyon 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 Okada Aiyon Co., Ltd. have on record?
5 shareholders are shown on record for Okada Aiyon Co., Ltd.. The register reports 10 in total; only the top 5 by holding are shown here.
What is Okada Aiyon Co., Ltd.'s company registration number?
Okada Aiyon Co., Ltd.'s registration number is 3120001028645, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Okada Aiyon Co., Ltd. still an active company?
Okada Aiyon Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Okada Aiyon Co., Ltd. incorporated?
Okada Aiyon Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Okada Aiyon Co., Ltd.'s registered address?
The registered address on file for Okada Aiyon Co., Ltd. is Minato Ward, Osaka City, Japan.
What legal structure is Okada Aiyon Co., Ltd. registered as?
Okada Aiyon Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of Okada Aiyon Co., Ltd.?
Four officers are currently on record for Okada Aiyon Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Nobuo Maenishi serves as Senior Md, Gm Of Corporate Planning Office & Director; Terukazu Yamaguchi serves as Md & Director; Yuji Okada serves as President & Representative Director; Masahiro Kawashima serves as Md, Gm Of Machinery Department & Director. Management authority at Okada Aiyon Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Okada Aiyon Co., Ltd. have a parent company or subsidiaries?
Okada Aiyon Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 3 subsidiaries recorded beneath it across 2 jurisdictions. Those 3 subsidiaries span Japan, Netherlands 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.
Can Zavia monitor changes to Okada Aiyon 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 Okada Aiyon 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 Okada Aiyon 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 Okada Aiyon 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 2 October 2026.