Japan Aqua Co., Ltd.
Japan Aqua Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 4020001061696, 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, Japan. 5 shareholders are on record for Japan Aqua 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 1 October 2026.
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Shareholders
5
Five shareholders are currently on record for Japan Aqua 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 45.8% — the largest recorded stake — followed by DFA International Core Equity Portfolio at 25.5%; 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 | 45.8% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Core Equity Portfolio | 25.5% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Vector Equity Port | 7.3% | National Tax Agency — Corporate Number Publication Site | |
| Dimensional ETF Tr-Dimensional World ex U.S. Core Equity 2 ETF | 4.9% | National Tax Agency — Corporate Number Publication Site | |
| Dimensional ETF Tr-Dimensional International Core Equity 2 ETF | 3.4% | National Tax Agency — Corporate Number Publication Site |
Officers
5
The Senior Md Of Administration, Finance & Accounting And Executive Director of Japan Aqua Co., Ltd. currently on record is Yuka Murakami; five officers are currently on record for Japan Aqua Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site.
The register reports 12 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at Japan Aqua 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
Japan Aqua Co., Ltd. sits 2 levels below its ultimate parent, YAMADA HOLDINGS CO., LTD., registered in Japan. The full chain up to YAMADA HOLDINGS CO., LTD. is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by Japan Aqua Co., Ltd.'s own shareholder record.
YAMADA HOLDINGS CO., LTD.
Japan
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Frequently Asked Questions
Who owns Japan Aqua Co., Ltd.?
Five shareholders are currently on record for Japan Aqua 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 45.8% — the largest recorded stake — followed by DFA International Core Equity Portfolio at 25.5%; 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 Japan Aqua Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Japan Aqua 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 Japan Aqua Co., Ltd. have on record?
5 shareholders are shown on record for Japan Aqua Co., Ltd.. The register reports 10 in total; only the top 5 by holding are shown here.
What is Japan Aqua Co., Ltd.'s company registration number?
Japan Aqua Co., Ltd.'s registration number is 4020001061696, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Japan Aqua Co., Ltd. still an active company?
Japan Aqua Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Japan Aqua Co., Ltd. incorporated?
Japan Aqua Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Japan Aqua Co., Ltd.'s registered address?
The registered address on file for Japan Aqua Co., Ltd. is Minato Ward, Japan.
What legal structure is Japan Aqua Co., Ltd. registered as?
Japan Aqua Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of Japan Aqua Co., Ltd.?
The Senior Md Of Administration, Finance & Accounting And Executive Director of Japan Aqua Co., Ltd. currently on record is Yuka Murakami; five officers are currently on record for Japan Aqua Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Japan Aqua Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Japan Aqua Co., Ltd. have a parent company or subsidiaries?
Japan Aqua Co., Ltd. sits 2 levels below its ultimate parent, YAMADA HOLDINGS CO., LTD., registered in Japan.
Can Zavia monitor changes to Japan Aqua 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 Japan Aqua 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 Japan Aqua 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 Japan Aqua 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 1 October 2026.