Quest Diagnostics
Quest Diagnostics is a registered legal entity registered in United States under C1063-1966, with active status. The company was incorporated on 1 March 1948 and lists its registered address as United States. No shareholders are recorded for Quest Diagnostics; ownership in this jurisdiction is held as the stock ledger under state corporate law (e.g. §219 of the Delaware General Corporation Law), a record kept privately rather than filed publicly. No beneficial owner (UBO) data is recorded for Quest Diagnostics; access to beneficial-ownership data in this jurisdiction is governed by its own register rules.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Group Structure
Quest Diagnostics has no recorded parent company — it sits at the top of its own group structure, with 78 subsidiaries recorded beneath it across 5 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 78 subsidiaries span United States, Finland, Mexico, India, Brazil 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. 10 of the 78 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Quest Diagnostics
United States
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Frequently Asked Questions
Who is Quest Diagnostics's UBO (Ultimate Beneficial Owner)?
No Ultimate Beneficial Owner (UBO) data is recorded for Quest Diagnostics; access to beneficial-ownership data in this jurisdiction is governed by its own register rules.
Is Quest Diagnostics still an active company?
Quest Diagnostics's status is listed as active.
When was Quest Diagnostics incorporated?
Quest Diagnostics was incorporated on 1 March 1948.
What is Quest Diagnostics's registered address?
The registered address on file for Quest Diagnostics is United States.
Does Quest Diagnostics have a parent company or subsidiaries?
Quest Diagnostics has no recorded parent company — it sits at the top of its own group structure, with 78 subsidiaries recorded beneath it across 5 jurisdictions. Those 78 subsidiaries span United States, Finland, Mexico, India, Brazil 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. 10 of the 78 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 Quest Diagnostics's ownership over time?
This profile reflects a point-in-time snapshot. Zavia's monitoring API can track changes to Quest Diagnostics's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Quest Diagnostics's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like Quest Diagnostics's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.