Symphonia Technology Co., Ltd.
Symphonia Technology Co., Ltd. is a registered legal entity registered in Japan under 2010401054443, 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 Symphonia Technology 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 29 September 2026.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Shareholders
5
Shareholders of Symphonia Technology Co., Ltd.
Five shareholders are currently on record for Symphonia Technology 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 Vanguard International Stock Index-Total Intl Stock Indx, holding 22% — the largest recorded stake — followed by DFA Japanese Small Company Series at 10.4%; 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 10 shareholders in total, though only the top 5 by holding are shown in this view.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard International Stock Index-Total Intl Stock Indx | 22% | National Tax Agency — Corporate Number Publication Site | |
| DFA Japanese Small Company Series | 10.4% | National Tax Agency — Corporate Number Publication Site | |
| Vanguard Intl Equity Index Fds-FTSE All World ex U.S.Small Cap Index | 6.8% | National Tax Agency — Corporate Number Publication Site | |
| Schwab Strategic Tr-Schwab Fundamental Intl Small Company Idx ETF | 5.6% | National Tax Agency — Corporate Number Publication Site | |
| WisdomTree Tr-WisdomTree Japan Hedged Equity Fd | 3.7% | National Tax Agency — Corporate Number Publication Site |
Officers
5
Directors and officers of Symphonia Technology Co., Ltd.
The Managing Director of Symphonia Technology Co., Ltd. currently on record is Katsuyuki Sakamoto; five officers are currently on record for Symphonia Technology Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Symphonia Technology 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.
Data availability
The register reports 8 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
Group Structure
Group structure of Symphonia Technology Co., Ltd.
Symphonia Technology Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 3 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.
- SERUKO ELECTRONICS CO., LTD. (Japan)
- SINFONIA MICROTEC CO.,LTD. (Japan)
- I.C.S CO., LTD. (Japan)
- SINFONIA TECHNOLOGY TOYOHASHI SHINRYOSHO (Japan)
- SINFONIA ENGINEERING CO.,LTD. (Japan)
- SINFONIA SHOJI CO.,LTD. (Japan)
- ISESEISAKUSHOSHINRYOJO (Japan)
- Sinfonia Technology (Shanghai) Co., Ltd. (China)
- SINFONIA TECHNOLOGY (THAILAND) COMPANY LIMITED (Thailand)
Data availability
Those 9 subsidiaries span Japan, China, Thailand 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. Two of the 9 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Data-provider feed — rows as supplied to Zavia for National Tax Agency — Corporate Number Publication Site, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
Symphonia Technology Co., Ltd.
Japan
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring.
Frequently Asked Questions
Who owns Symphonia Technology Co., Ltd.?
Five shareholders are currently on record for Symphonia Technology 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 Vanguard International Stock Index-Total Intl Stock Indx, holding 22% — the largest recorded stake — followed by DFA Japanese Small Company Series at 10.4%; 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 Symphonia Technology Co., Ltd.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Symphonia Technology 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 Symphonia Technology Co., Ltd. have on record?
5 shareholders are shown on record for Symphonia Technology Co., Ltd.. The register reports 10 in total; only the top 5 by holding are shown here.
What is Symphonia Technology Co., Ltd.'s company registration number?
Symphonia Technology Co., Ltd.'s registration number is 2010401054443, filed with National Tax Agency — Corporate Number Publication Site in Japan. Its current status on the register is active.
Is Symphonia Technology Co., Ltd. still an active company?
Symphonia Technology Co., Ltd.'s status on National Tax Agency — Corporate Number Publication Site is listed as active.
When was Symphonia Technology Co., Ltd. incorporated?
Symphonia Technology Co., Ltd. was incorporated on 5 October 2015, according to National Tax Agency — Corporate Number Publication Site.
What is Symphonia Technology Co., Ltd.'s registered address?
The registered address on file for Symphonia Technology Co., Ltd. is Minato Ward, Japan.
Who are the officers/directors of Symphonia Technology Co., Ltd.?
The Managing Director of Symphonia Technology Co., Ltd. currently on record is Katsuyuki Sakamoto; five officers are currently on record for Symphonia Technology Co., Ltd., filed with National Tax Agency — Corporate Number Publication Site. Management authority at Symphonia Technology Co., Ltd. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Symphonia Technology Co., Ltd. have a parent company or subsidiaries?
Symphonia Technology Co., Ltd. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 3 jurisdictions. Those 9 subsidiaries span Japan, China, Thailand 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. Two of the 9 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to Symphonia Technology 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 Symphonia Technology 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 Symphonia Technology 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 Symphonia Technology 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 29 September 2026.