LYELL IMMUNOPHARMA, INC.
LYELL IMMUNOPHARMA, INC. is a registered legal entity registered in United States under 604321364, and its current status with Washington Secretary of State is active. The company was incorporated on 8 August 2018 and lists its registered address as S SAN FRAN, United States. 5 shareholders are on record for LYELL IMMUNOPHARMA, 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 Washington Secretary of State and was last updated on 5 October 2026.
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Shareholders
5
Five shareholders are currently on record for LYELL IMMUNOPHARMA, INC., 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 8.6% — the largest recorded stake — followed by VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund at 1.4%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 6 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 | 8.6% | Washington Secretary of State | |
| VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund | 1.4% | Washington Secretary of State | |
| SCHWAB STRATEGIC TRUST-Schwab U.S. Small-Cap ETF | 0.6% | Washington Secretary of State | |
| iShares Trust-iShares Biotechnology ETF | 0.5% | Washington Secretary of State | |
| VANGUARD WORLD FUND-Vanguard Health Care Index Fund | 0.2% | Washington Secretary of State |
Officers
5
The Governingperson of LYELL IMMUNOPHARMA, INC. currently on record is LYNN SEELY; five officers are currently on record for LYELL IMMUNOPHARMA, INC., filed with Washington Secretary of State.
The register reports 8 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at LYELL IMMUNOPHARMA, 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
LYELL IMMUNOPHARMA, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. 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 1 subsidiary spans United States jurisdiction, 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.
LYELL IMMUNOPHARMA, INC.
United States
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Frequently Asked Questions
Who owns LYELL IMMUNOPHARMA, INC.?
Five shareholders are currently on record for LYELL IMMUNOPHARMA, INC., 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 8.6% — the largest recorded stake — followed by VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund at 1.4%; 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 LYELL IMMUNOPHARMA, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for LYELL IMMUNOPHARMA, 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 LYELL IMMUNOPHARMA, INC. have on record?
5 shareholders are shown on record for LYELL IMMUNOPHARMA, INC.. The register reports 6 in total; only the top 5 by holding are shown here.
What is LYELL IMMUNOPHARMA, INC.'s company registration number?
LYELL IMMUNOPHARMA, INC.'s registration number is 604321364, filed with Washington Secretary of State in United States. Its current status on the register is active.
Is LYELL IMMUNOPHARMA, INC. still an active company?
LYELL IMMUNOPHARMA, INC.'s status on Washington Secretary of State is listed as active.
When was LYELL IMMUNOPHARMA, INC. incorporated?
LYELL IMMUNOPHARMA, INC. was incorporated on 8 August 2018, according to Washington Secretary of State.
What is LYELL IMMUNOPHARMA, INC.'s registered address?
The registered address on file for LYELL IMMUNOPHARMA, INC. is S SAN FRAN, United States.
Who are the officers/directors of LYELL IMMUNOPHARMA, INC.?
The Governingperson of LYELL IMMUNOPHARMA, INC. currently on record is LYNN SEELY; five officers are currently on record for LYELL IMMUNOPHARMA, INC., filed with Washington Secretary of State. Management authority at LYELL IMMUNOPHARMA, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does LYELL IMMUNOPHARMA, INC. have a parent company or subsidiaries?
LYELL IMMUNOPHARMA, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Those 1 subsidiary spans United States jurisdiction, 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 LYELL IMMUNOPHARMA, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from Washington Secretary of State. Zavia's monitoring API can track changes to LYELL IMMUNOPHARMA, 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 LYELL IMMUNOPHARMA, INC.'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 LYELL IMMUNOPHARMA, 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 Washington Secretary of State and was last synced on 5 October 2026.