Tia Co., Ltd.
Tia Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 6180001045104, 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 Kita Ward, Nagoya City, Japan. 3 shareholders are on record for Tia 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
3
Three shareholders are currently on record for Tia 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 56% — a majority holding — followed by DFA International Core Equity Portfolio at 40.4%; the remaining 1 shareholder shown holds 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.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA Japanese Small Company Series | 56% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Core Equity Portfolio | 40.4% | National Tax Agency — Corporate Number Publication Site | |
| Harbor Overseas Fund | 3.6% | National Tax Agency — Corporate Number Publication Site |
Officers
5
The President, Ceo & Representative Director of Tia Co., Ltd. currently on record is Norihisa Tomiyasu; five officers are currently on record for Tia Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site.
The register reports 7 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at Tia 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
Tia Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 4 subsidiaries recorded beneath it across 1 jurisdiction. 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 4 subsidiaries span Japan jurisdiction, 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.
Tia Co., Ltd.
Japan
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Frequently Asked Questions
Who owns Tia Co., Ltd.?
Three shareholders are currently on record for Tia 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 56% — a majority holding — followed by DFA International Core Equity Portfolio at 40.4%; the remaining 1 shareholder shown holds 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 Tia Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Tia 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 Tia Co., Ltd. have on record?
3 shareholders are shown on record for Tia Co., Ltd..
What is Tia Co., Ltd.'s company registration number?
Tia Co., Ltd.'s registration number is 6180001045104, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Tia Co., Ltd. still an active company?
Tia Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Tia Co., Ltd. incorporated?
Tia Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Tia Co., Ltd.'s registered address?
The registered address on file for Tia Co., Ltd. is Kita Ward, Nagoya City, Japan.
What legal structure is Tia Co., Ltd. registered as?
Tia Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of Tia Co., Ltd.?
The President, Ceo & Representative Director of Tia Co., Ltd. currently on record is Norihisa Tomiyasu; five officers are currently on record for Tia Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Tia Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Tia Co., Ltd. have a parent company or subsidiaries?
Tia Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 4 subsidiaries recorded beneath it across 1 jurisdiction. Those 4 subsidiaries span Japan jurisdiction, 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 Tia 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 Tia 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 Tia 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 Tia 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.