WILLIAM BLAIR INTERNATIONAL, LTD
WILLIAM BLAIR INTERNATIONAL, LTD is a Private limited company (Ltd.) registered in United Kingdom under 03619027, and its current status with Companies House is active. The company was incorporated on 20 August 1998 and lists its registered address as LONDON, United Kingdom. 1 shareholder is on record for WILLIAM BLAIR INTERNATIONAL, 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 Companies House and was last updated on 22 October 2026.
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Shareholders
1
One shareholder is currently on record for WILLIAM BLAIR INTERNATIONAL, LTD, held on the Confirmation Statement (CS01), filed under the Companies Act 2006.
The largest of these is WILLIAM BLAIR & COMPANY LLC, holding 100% — a majority holding.
Because the 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 |
|---|---|---|---|
| WILLIAM BLAIR & COMPANY LLC | 100% | Companies House |
Officers
4
Four officers are currently on record for WILLIAM BLAIR INTERNATIONAL, LTD, filed with Companies House. Brent Gledhill (appointed 2016-08-04), Thomas Ross (appointed 2017-03-03), Cissie Citardi (appointed 2022-01-15) and Michael Trimberger (appointed 2023-07-01) all serve as Director.
The register reports 42 officers in total, including past appointments, though only the 4 most relevant records are shown here.
Management authority at WILLIAM BLAIR INTERNATIONAL, 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
WILLIAM BLAIR INTERNATIONAL, LTD sits 2 levels below its ultimate parent, Wbc Holdings, L.P., registered in United States. 5 subsidiaries are recorded beneath it, across 6 jurisdictions. Immediately above WILLIAM BLAIR INTERNATIONAL, LTD is William Blair & Company LLC, holding 100% as filed in WILLIAM BLAIR INTERNATIONAL, LTD's own shareholder record with Companies House. Wbc Holdings, L.P. sits further up the chain, a link derived by walking shareholder filings across jurisdictions rather than stated in a single document. 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 United Kingdom, Sweden, China, Singapore, Germany, Switzerland 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.
Wbc Holdings, L.P.
United States
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Frequently Asked Questions
Who owns WILLIAM BLAIR INTERNATIONAL, LTD?
One shareholder is currently on record for WILLIAM BLAIR INTERNATIONAL, LTD, held on the Confirmation Statement (CS01), filed under the Companies Act 2006. The largest of these is WILLIAM BLAIR & COMPANY LLC, holding 100% — a majority holding. Because the 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 WILLIAM BLAIR INTERNATIONAL, LTD's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for WILLIAM BLAIR INTERNATIONAL, 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 WILLIAM BLAIR INTERNATIONAL, LTD have on record?
1 shareholder is shown on record for WILLIAM BLAIR INTERNATIONAL, LTD.
What is WILLIAM BLAIR INTERNATIONAL, LTD's company registration number?
WILLIAM BLAIR INTERNATIONAL, LTD's registration number is 03619027, filed with Companies House in United Kingdom. Its current status on the register is active.
Is WILLIAM BLAIR INTERNATIONAL, LTD still an active company?
WILLIAM BLAIR INTERNATIONAL, LTD's status on Companies House is listed as active.
When was WILLIAM BLAIR INTERNATIONAL, LTD incorporated?
WILLIAM BLAIR INTERNATIONAL, LTD was incorporated on 20 August 1998, according to Companies House.
What is WILLIAM BLAIR INTERNATIONAL, LTD's registered address?
The registered address on file for WILLIAM BLAIR INTERNATIONAL, LTD is LONDON, United Kingdom.
What legal structure is WILLIAM BLAIR INTERNATIONAL, LTD registered as?
WILLIAM BLAIR INTERNATIONAL, LTD is registered as a Private limited company (Ltd.) in United Kingdom.
Who are the officers/directors of WILLIAM BLAIR INTERNATIONAL, LTD?
Four officers are currently on record for WILLIAM BLAIR INTERNATIONAL, LTD, filed with Companies House. Brent Gledhill (appointed 2016-08-04), Thomas Ross (appointed 2017-03-03), Cissie Citardi (appointed 2022-01-15) and Michael Trimberger (appointed 2023-07-01) all serve as Director. Management authority at WILLIAM BLAIR INTERNATIONAL, LTD sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does WILLIAM BLAIR INTERNATIONAL, LTD have a parent company or subsidiaries?
WILLIAM BLAIR INTERNATIONAL, LTD sits 2 levels below its ultimate parent, Wbc Holdings, L.P., registered in United States. 5 subsidiaries are recorded beneath it, across 6 jurisdictions. Those 5 subsidiaries span United Kingdom, Sweden, China, Singapore, Germany, Switzerland 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.
Can Zavia monitor changes to WILLIAM BLAIR INTERNATIONAL, LTD's ownership over time?
This profile reflects a point-in-time snapshot from Companies House. Zavia's monitoring API can track changes to WILLIAM BLAIR INTERNATIONAL, 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 WILLIAM BLAIR INTERNATIONAL, LTD's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United Kingdom, so records like WILLIAM BLAIR INTERNATIONAL, 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 Companies House and was last synced on 22 October 2026.