J Stream Co., Ltd.
J Stream Co., Ltd. is a Private limited company (Ltd.) registered in Japan under 4010401089388, 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 J Stream 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 25 September 2026.
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Shareholders
5
Shareholders of J Stream Co., Ltd.
Five shareholders are currently on record for J Stream 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 24.1% — the largest recorded stake — followed by Voya International Small Cap Fund at 16.6%; 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.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA Japanese Small Company Series | 24.1% | National Tax Agency — Corporate Number Publication Site | |
| Voya International Small Cap Fund | 16.6% | National Tax Agency — Corporate Number Publication Site | |
| Old Westbury Small & Mid Cap Strategies Fund | 16.3% | National Tax Agency — Corporate Number Publication Site | |
| DFA Investment Dimensions-DFA International Small Cap Growth Port | 10.2% | National Tax Agency — Corporate Number Publication Site | |
| SEI Institutional International Tr-International Equity | 8.7% | National Tax Agency — Corporate Number Publication Site |
Officers
4
Directors and officers of J Stream Co., Ltd.
Four officers are currently on record for J Stream Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Toshio Ishimatsu serves as President, Ceo & Representative Director; Satoru Miyama serves as Vp & Director; Norio Yamashita serves as Senior Executive Officer; Yoshihiro Takemi serves as Executive Officer & Gm Of Administrative Division. Management authority at J Stream 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
Group structure of J Stream Co., Ltd.
J Stream Co., Ltd. sits 1 level below its ultimate parent, TRANSCOSMOS INC., registered in Japan. 7 subsidiaries are recorded beneath it, across 1 jurisdiction. The full chain up to TRANSCOSMOS INC. is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by J Stream Co., Ltd.'s own shareholder record. 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.
- CROSSCO CO., LTD. (Japan)
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- J CREATIVE WORKS ,INC. (Japan)
- CO3 INC. (Japan)
- I P L CO.,LTD (Japan)
- VIDEOSTEP INC. (Japan)
- BIGM2Y CO., LTD. (Japan)
Data availability
Those 7 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.
TRANSCOSMOS INC.
Japan
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Frequently Asked Questions
Who owns J Stream Co., Ltd.?
Five shareholders are currently on record for J Stream 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 24.1% — the largest recorded stake — followed by Voya International Small Cap Fund at 16.6%; 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 J Stream Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for J Stream 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 J Stream Co., Ltd. have on record?
5 shareholders are shown on record for J Stream Co., Ltd.. The register reports 6 in total; only the top 5 by holding are shown here.
What is J Stream Co., Ltd.'s company registration number?
J Stream Co., Ltd.'s registration number is 4010401089388, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is J Stream Co., Ltd. still an active company?
J Stream Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was J Stream Co., Ltd. incorporated?
J Stream Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is J Stream Co., Ltd.'s registered address?
The registered address on file for J Stream Co., Ltd. is Minato Ward, Japan.
What legal structure is J Stream Co., Ltd. registered as?
J Stream Co., Ltd. is registered as a Private limited company (Ltd.) in Japan.
Who are the officers/directors of J Stream Co., Ltd.?
Four officers are currently on record for J Stream Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Toshio Ishimatsu serves as President, Ceo & Representative Director; Satoru Miyama serves as Vp & Director; Norio Yamashita serves as Senior Executive Officer; Yoshihiro Takemi serves as Executive Officer & Gm Of Administrative Division. Management authority at J Stream Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does J Stream Co., Ltd. have a parent company or subsidiaries?
J Stream Co., Ltd. sits 1 level below its ultimate parent, TRANSCOSMOS INC., registered in Japan. 7 subsidiaries are recorded beneath it, across 1 jurisdiction. Those 7 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 J Stream 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 J Stream 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 J Stream 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 J Stream 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 25 September 2026.