Seraku Co., Ltd.
Seraku Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 5120001187134, 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 Nishi Ward, Osaka City, Japan. 5 shareholders are on record for Seraku 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 3 October 2026.
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Shareholders
5
Five shareholders are currently on record for Seraku 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 Old Westbury Small & Mid Cap Strategies Fund, holding 36.1% — the largest recorded stake — followed by DFA Japanese Small Company Series at 18.9%; 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 |
|---|---|---|---|
| Old Westbury Small & Mid Cap Strategies Fund | 36.1% | National Tax Agency — Corporate Number Publication Site | |
| DFA Japanese Small Company Series | 18.9% | National Tax Agency — Corporate Number Publication Site | |
| DFA International Core Equity Portfolio | 17.3% | National Tax Agency — Corporate Number Publication Site | |
| SEI Institutional Investment Tr-World Equity Ex-U.S. Fd | 10.4% | National Tax Agency — Corporate Number Publication Site | |
| Voya International Small Cap Fund | 4.2% | National Tax Agency — Corporate Number Publication Site |
Officers
3
Three officers are currently on record for Seraku Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Tatsumi Miyazaki serves as Ceo & Chairman; Hiromi Miyazaki serves as Senior Md, Executive Officer, Gm Of Sales & Director; Tomoharu Ozeki serves as Md, Executive Officer, Gm Of Business Management Division & Director.
Management authority at Seraku 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.
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Frequently Asked Questions
Who owns Seraku Co., Ltd.?
Five shareholders are currently on record for Seraku 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 Old Westbury Small & Mid Cap Strategies Fund, holding 36.1% — the largest recorded stake — followed by DFA Japanese Small Company Series at 18.9%; 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 Seraku Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Seraku 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 Seraku Co., Ltd. have on record?
5 shareholders are shown on record for Seraku Co., Ltd.. The register reports 10 in total; only the top 5 by holding are shown here.
What is Seraku Co., Ltd.'s company registration number?
Seraku Co., Ltd.'s registration number is 5120001187134, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Seraku Co., Ltd. still an active company?
Seraku Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Seraku Co., Ltd. incorporated?
Seraku Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Seraku Co., Ltd.'s registered address?
The registered address on file for Seraku Co., Ltd. is Nishi Ward, Osaka City, Japan.
What legal structure is Seraku Co., Ltd. registered as?
Seraku Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of Seraku Co., Ltd.?
Three officers are currently on record for Seraku Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Tatsumi Miyazaki serves as Ceo & Chairman; Hiromi Miyazaki serves as Senior Md, Executive Officer, Gm Of Sales & Director; Tomoharu Ozeki serves as Md, Executive Officer, Gm Of Business Management Division & Director. Management authority at Seraku Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to Seraku 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 Seraku 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 Seraku 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 Seraku 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 3 October 2026.