Celltrion. Inc.
Celltrion. Inc. is a Private limited company (Ltd.) registered in South Korea under 1338123603, and its current status with Supreme Court Internet Registry (IROS) is active. Its registered address on file is Incheon, South Korea. 5 shareholders are on record for Celltrion. Inc., 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 Supreme Court Internet Registry (IROS) and was last updated on 28 September 2026.
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Shareholders
5
Five shareholders are currently on record for Celltrion. Inc., filed with Supreme Court Internet Registry (IROS).
The largest of these is Vanguard International Stock Index-Total Intl Stock Indx, holding 29.2% — the largest recorded stake — followed by iShares Core MSCI Emerging Markets ETF at 19.6%; 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 |
|---|---|---|---|
| Vanguard International Stock Index-Total Intl Stock Indx | 29.2% | Supreme Court Internet Registry (IROS) | |
| iShares Core MSCI Emerging Markets ETF | 19.6% | Supreme Court Internet Registry (IROS) | |
| Vanguard Intl Equity Index Fds-FTSE All World ex U.S. Index Fund | 4.4% | Supreme Court Internet Registry (IROS) | |
| Schwab Strategic Tr-Schwab International Equity ETF | 3.6% | Supreme Court Internet Registry (IROS) | |
| Fidelity Series Global Ex U.S. Index Fund | 3.4% | Supreme Court Internet Registry (IROS) |
Officers
5
The Co-ceo & Inside Co-chairman Of The Board of Celltrion. Inc. currently on record is Jin-seok Seo; five officers are currently on record for Celltrion. Inc., filed with Supreme Court Internet Registry (IROS).
The register reports 6 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at Celltrion. Inc. 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
Celltrion. Inc. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 9 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.
Those 9 subsidiaries span South Korea, Taiwan, Ireland, Hungary, Netherlands, China, and 3 more 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. One of the 9 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Celltrion. Inc.
South Korea
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Frequently Asked Questions
Who owns Celltrion. Inc.?
Five shareholders are currently on record for Celltrion. Inc., filed with Supreme Court Internet Registry (IROS). The largest of these is Vanguard International Stock Index-Total Intl Stock Indx, holding 29.2% — the largest recorded stake — followed by iShares Core MSCI Emerging Markets ETF at 19.6%; 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 Celltrion. Inc.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Celltrion. Inc. 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 Celltrion. Inc. have on record?
5 shareholders are shown on record for Celltrion. Inc.. The register reports 10 in total; only the top 5 by holding are shown here.
What is Celltrion. Inc.'s company registration number?
Celltrion. Inc.'s registration number is 1338123603, filed with Supreme Court Internet Registry (IROS) in South Korea. Its current status on the register is active.
Is Celltrion. Inc. still an active company?
Celltrion. Inc.'s status on Supreme Court Internet Registry (IROS) is listed as active.
What is Celltrion. Inc.'s registered address?
The registered address on file for Celltrion. Inc. is Incheon, South Korea.
What legal structure is Celltrion. Inc. registered as?
Celltrion. Inc. is registered as a Private limited company (Ltd.) in South Korea.
Who are the officers/directors of Celltrion. Inc.?
The Co-ceo & Inside Co-chairman Of The Board of Celltrion. Inc. currently on record is Jin-seok Seo; five officers are currently on record for Celltrion. Inc., filed with Supreme Court Internet Registry (IROS). Management authority at Celltrion. Inc. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Celltrion. Inc. have a parent company or subsidiaries?
Celltrion. Inc. has no recorded parent company — it sits at the top of its own group structure, with 9 subsidiaries recorded beneath it across 9 jurisdictions. Those 9 subsidiaries span South Korea, Taiwan, Ireland, Hungary, Netherlands, China, and 3 more 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. One of the 9 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to Celltrion. Inc.'s ownership over time?
This profile reflects a point-in-time snapshot from Supreme Court Internet Registry (IROS). Zavia's monitoring API can track changes to Celltrion. Inc.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Celltrion. Inc.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including South Korea, so records like Celltrion. Inc.'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 Supreme Court Internet Registry (IROS) and was last synced on 28 September 2026.