Idorsia Ltd
Idorsia Ltd is a Private limited company (Ltd.) registered in Switzerland under CHE340129854, and its current status with Zefix — Swiss Central Business Names Index is active. The company was incorporated on 3 March 2017 and lists its registered address as Allschwil, Switzerland. 5 shareholders are on record for Idorsia 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 Zefix — Swiss Central Business Names Index and was last updated on 28 September 2026.
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Shareholders
5
Five shareholders are currently on record for Idorsia Ltd, reflecting the Aktienbuch (share register) maintained under Article 686 of the Swiss Code of Obligations rather than a public filing.
The largest of these is Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund, holding 41.1% — the largest recorded stake — followed by Smallcap World Fund at 17.7%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 15 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 |
|---|---|---|---|
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund | 41.1% | Zefix — Swiss Central Business Names Index | |
| Smallcap World Fund | 17.7% | Zefix — Swiss Central Business Names Index | |
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company K6 Fund | 12.1% | Zefix — Swiss Central Business Names Index | |
| Vanguard International Stock Index-Total Intl Stock Indx | 6.6% | Zefix — Swiss Central Business Names Index | |
| iShares Trust-iShares Core MSCI EAFE ETF | 1.9% | Zefix — Swiss Central Business Names Index |
Officers
5
The Ceo & Executive Director of Idorsia Ltd currently on record is Jean-paul Clozel M.d.; five officers are currently on record for Idorsia Ltd, filed with Zefix — Swiss Central Business Names Index.
The register reports 23 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at Idorsia 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
Idorsia Ltd has no recorded parent company — it sits at the top of its own group structure, with 5 subsidiaries recorded beneath it across 4 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 5 subsidiaries span Switzerland, United States, United Kingdom, China 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 5 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Idorsia Ltd
Switzerland
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Frequently Asked Questions
Who owns Idorsia Ltd?
Five shareholders are currently on record for Idorsia Ltd, reflecting the Aktienbuch (share register) maintained under Article 686 of the Swiss Code of Obligations rather than a public filing. The largest of these is Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund, holding 41.1% — the largest recorded stake — followed by Smallcap World Fund at 17.7%; 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 Idorsia Ltd's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Idorsia 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 Idorsia Ltd have on record?
5 shareholders are shown on record for Idorsia Ltd. The register reports 15 in total; only the top 5 by holding are shown here.
What is Idorsia Ltd's company registration number?
Idorsia Ltd's registration number is CHE340129854, filed with Zefix — Swiss Central Business Names Index in Switzerland. Its current status on the register is active.
Is Idorsia Ltd still an active company?
Idorsia Ltd's status on Zefix — Swiss Central Business Names Index is listed as active.
When was Idorsia Ltd incorporated?
Idorsia Ltd was incorporated on 3 March 2017, according to Zefix — Swiss Central Business Names Index.
What is Idorsia Ltd's registered address?
The registered address on file for Idorsia Ltd is Allschwil, Switzerland.
What legal structure is Idorsia Ltd registered as?
Idorsia Ltd is registered as a Private limited company (Ltd.) in Switzerland.
Who are the officers/directors of Idorsia Ltd?
The Ceo & Executive Director of Idorsia Ltd currently on record is Jean-paul Clozel M.d.; five officers are currently on record for Idorsia Ltd, filed with Zefix — Swiss Central Business Names Index. Management authority at Idorsia Ltd sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Idorsia Ltd have a parent company or subsidiaries?
Idorsia Ltd has no recorded parent company — it sits at the top of its own group structure, with 5 subsidiaries recorded beneath it across 4 jurisdictions. Those 5 subsidiaries span Switzerland, United States, United Kingdom, China 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 5 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 Idorsia Ltd's ownership over time?
This profile reflects a point-in-time snapshot from Zefix — Swiss Central Business Names Index. Zavia's monitoring API can track changes to Idorsia 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 Idorsia Ltd's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Switzerland, so records like Idorsia 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 Zefix — Swiss Central Business Names Index and was last synced on 28 September 2026.