XOMA CORPORATION
XOMA CORPORATION is a Public Limited Company registered in United States under 0801094125, and its current status with California Secretary of State — bizfile Online is active. Its registered address on file is EmeryVille, United States. 5 shareholders are on record for XOMA CORPORATION, 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 California Secretary of State — bizfile Online and was last updated on 5 October 2026.
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Shareholders
5
Five shareholders are currently on record for XOMA CORPORATION, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Vanguard Group Inc, holding 7.1% — the largest recorded stake — followed by FMR, LLC at 6.2%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 39 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 Group Inc | 7.1% | California Secretary of State — bizfile Online | |
| FMR, LLC | 6.2% | California Secretary of State — bizfile Online | |
| FMR, LLC | 6.1% | California Secretary of State — bizfile Online | |
| Blackrock Inc. | 2.5% | California Secretary of State — bizfile Online | |
| Blackrock Inc. | 2.2% | California Secretary of State — bizfile Online |
Officers
5
The Manager of XOMA CORPORATION currently on record is PAT SCANNON; five officers are currently on record for XOMA CORPORATION, filed with California Secretary of State — bizfile Online.
The register reports 10 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at XOMA CORPORATION 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
XOMA CORPORATION sits 1 level below its ultimate parent, Ligand Pharmaceuticals Incorporated, registered in United States. 12 subsidiaries are recorded beneath it, across 4 jurisdictions. The full chain up to Ligand Pharmaceuticals Incorporated is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by XOMA CORPORATION's own shareholder record. 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 12 subsidiaries span United States, United Kingdom, Bermuda, Netherlands 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 12 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Ligand Pharmaceuticals Incorporated
United States
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Frequently Asked Questions
Who owns XOMA CORPORATION?
Five shareholders are currently on record for XOMA CORPORATION, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 7.1% — the largest recorded stake — followed by FMR, LLC at 6.2%; 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 XOMA CORPORATION's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for XOMA CORPORATION 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 XOMA CORPORATION have on record?
5 shareholders are shown on record for XOMA CORPORATION. The register reports 39 in total; only the top 5 by holding are shown here.
What is XOMA CORPORATION's company registration number?
XOMA CORPORATION's registration number is 0801094125, filed with California Secretary of State — bizfile Online in United States. Its current status on the register is active.
Is XOMA CORPORATION still an active company?
XOMA CORPORATION's status on California Secretary of State — bizfile Online is listed as active.
What is XOMA CORPORATION's registered address?
The registered address on file for XOMA CORPORATION is EmeryVille, United States.
What legal structure is XOMA CORPORATION registered as?
XOMA CORPORATION is registered as a Public Limited Company in United States.
Who are the officers/directors of XOMA CORPORATION?
The Manager of XOMA CORPORATION currently on record is PAT SCANNON; five officers are currently on record for XOMA CORPORATION, filed with California Secretary of State — bizfile Online. Management authority at XOMA CORPORATION sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does XOMA CORPORATION have a parent company or subsidiaries?
XOMA CORPORATION sits 1 level below its ultimate parent, Ligand Pharmaceuticals Incorporated, registered in United States. 12 subsidiaries are recorded beneath it, across 4 jurisdictions. Those 12 subsidiaries span United States, United Kingdom, Bermuda, Netherlands 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 12 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 XOMA CORPORATION's ownership over time?
This profile reflects a point-in-time snapshot from California Secretary of State — bizfile Online. Zavia's monitoring API can track changes to XOMA CORPORATION's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access XOMA CORPORATION'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 XOMA CORPORATION'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 California Secretary of State — bizfile Online and was last synced on 5 October 2026.