ALPINE IMMUNE SCIENCES, INC.
ALPINE IMMUNE SCIENCES, INC. is a registered legal entity registered in United States under 603259177, and its current status with Washington Secretary of State is active. The company was incorporated on 5 April 2018 and lists its registered address as SEATTLE, United States. 5 shareholders are on record for ALPINE IMMUNE SCIENCES, 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 18 September 2026.
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Shareholders
5
Shareholders of ALPINE IMMUNE SCIENCES, INC.
Five shareholders are currently on record for ALPINE IMMUNE SCIENCES, 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 Orbimed Advisors LLC., holding 11.3% — the largest recorded stake — followed by Lynx1 Capital Management Lp at 7.4%; 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.
Data availability
The register reports 20 shareholders in total, though only the top 5 by holding are shown in this view.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Orbimed Advisors LLC. | 11.3% | Washington Secretary of State | |
| Lynx1 Capital Management Lp | 7.4% | Washington Secretary of State | |
| Vanguard Group Inc | 3.9% | Washington Secretary of State | |
| iShares Russell 2000 ETF | 2% | Washington Secretary of State | |
| Fidelity Small Cap Index Fund | 0.8% | Washington Secretary of State |
Officers
3
Directors and officers of ALPINE IMMUNE SCIENCES, INC.
Three officers are currently on record for ALPINE IMMUNE SCIENCES, INC., filed with Washington Secretary of State. STANFORD PENG, M.D., MITCHELL H. GOLD, M.D. and PAUL RICKEY all serve as Governingperson. Management authority at ALPINE IMMUNE SCIENCES, 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
Group structure of ALPINE IMMUNE SCIENCES, INC.
ALPINE IMMUNE SCIENCES, INC. sits 1 level below its ultimate parent, VERTEX PHARMACEUTICALS INCORPORATED. 2 subsidiaries are recorded beneath it, across 1 jurisdiction. The full chain up to VERTEX PHARMACEUTICALS INCORPORATED is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by ALPINE IMMUNE SCIENCES, INC.'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.
- AIS OPERATING CO., INC.
- ALPINE IMMUNE SCIENCES AUSTRALIA PTY LTD
Data availability
Those 2 subsidiaries span 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.
VERTEX PHARMACEUTICALS INCORPORATED
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring.
Frequently Asked Questions
Who owns ALPINE IMMUNE SCIENCES, INC.?
Five shareholders are currently on record for ALPINE IMMUNE SCIENCES, 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 Orbimed Advisors LLC., holding 11.3% — the largest recorded stake — followed by Lynx1 Capital Management Lp at 7.4%; 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 ALPINE IMMUNE SCIENCES, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for ALPINE IMMUNE SCIENCES, 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 ALPINE IMMUNE SCIENCES, INC. have on record?
5 shareholders are shown on record for ALPINE IMMUNE SCIENCES, INC.. The register reports 20 in total; only the top 5 by holding are shown here.
What is ALPINE IMMUNE SCIENCES, INC.'s company registration number?
ALPINE IMMUNE SCIENCES, INC.'s registration number is 603259177, filed with Washington Secretary of State in United States. Its current status on the register is active.
Is ALPINE IMMUNE SCIENCES, INC. still an active company?
ALPINE IMMUNE SCIENCES, INC.'s status on Washington Secretary of State is listed as active.
When was ALPINE IMMUNE SCIENCES, INC. incorporated?
ALPINE IMMUNE SCIENCES, INC. was incorporated on 5 April 2018, according to Washington Secretary of State.
What is ALPINE IMMUNE SCIENCES, INC.'s registered address?
The registered address on file for ALPINE IMMUNE SCIENCES, INC. is SEATTLE, United States.
Who are the officers/directors of ALPINE IMMUNE SCIENCES, INC.?
Three officers are currently on record for ALPINE IMMUNE SCIENCES, INC., filed with Washington Secretary of State. STANFORD PENG, M.D., MITCHELL H. GOLD, M.D. and PAUL RICKEY all serve as Governingperson. Management authority at ALPINE IMMUNE SCIENCES, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does ALPINE IMMUNE SCIENCES, INC. have a parent company or subsidiaries?
ALPINE IMMUNE SCIENCES, INC. sits 1 level below its ultimate parent, VERTEX PHARMACEUTICALS INCORPORATED. 2 subsidiaries are recorded beneath it, across 1 jurisdiction. Those 2 subsidiaries span 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 ALPINE IMMUNE SCIENCES, 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 ALPINE IMMUNE SCIENCES, 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 ALPINE IMMUNE SCIENCES, 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 ALPINE IMMUNE SCIENCES, 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 18 September 2026.