IGM BIOSCIENCES, INC.
IGM BIOSCIENCES, INC. is a registered legal entity registered in United States under 2508770, and its current status with California Secretary of State — bizfile Online is active. The company was incorporated on 29 April 2003 and lists its registered address as MOUNTAIN VIEW, United States. 5 shareholders are on record for IGM BIOSCIENCES, 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 California Secretary of State — bizfile Online and was last updated on 21 October 2026.
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Shareholders
5
Five shareholders are currently on record for IGM BIOSCIENCES, INC., reflecting the stock ledger kept by the company under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Baker Bros. Advisors, LP, holding 25.9% — the largest recorded stake — followed by Goldman Sachs Group Inc at 5.4%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 15 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 |
|---|---|---|---|
| Baker Bros. Advisors, LP | 25.9% | California Secretary of State — bizfile Online | |
| Goldman Sachs Group Inc | 5.4% | California Secretary of State — bizfile Online | |
| Vanguard Group Inc | 4.8% | California Secretary of State — bizfile Online | |
| Blackrock Inc. | 2.4% | California Secretary of State — bizfile Online | |
| Millennium Management Llc | 1.7% | California Secretary of State — bizfile Online |
Officers
5
The Chief Financial Officer of IGM BIOSCIENCES, INC. currently on record is Misbah Tahir; five officers are currently on record for IGM BIOSCIENCES, INC., filed with California Secretary of State — bizfile Online.
The register reports 22 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at IGM BIOSCIENCES, 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.
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Frequently Asked Questions
Who owns IGM BIOSCIENCES, INC.?
Five shareholders are currently on record for IGM BIOSCIENCES, INC., reflecting the stock ledger kept by the company under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Baker Bros. Advisors, LP, holding 25.9% — the largest recorded stake — followed by Goldman Sachs Group Inc at 5.4%; 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 IGM BIOSCIENCES, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for IGM BIOSCIENCES, 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 IGM BIOSCIENCES, INC. have on record?
5 shareholders are shown on record for IGM BIOSCIENCES, INC.. The register reports 15 in total; only the top 5 by holding are shown here.
What is IGM BIOSCIENCES, INC.'s company registration number?
IGM BIOSCIENCES, INC.'s registration number is 2508770, filed with California Secretary of State — bizfile Online in United States. Its current status on the register is active.
Is IGM BIOSCIENCES, INC. still an active company?
IGM BIOSCIENCES, INC.'s status on California Secretary of State — bizfile Online is listed as active.
When was IGM BIOSCIENCES, INC. incorporated?
IGM BIOSCIENCES, INC. was incorporated on 29 April 2003, according to California Secretary of State — bizfile Online.
What is IGM BIOSCIENCES, INC.'s registered address?
The registered address on file for IGM BIOSCIENCES, INC. is MOUNTAIN VIEW, United States.
Who are the officers/directors of IGM BIOSCIENCES, INC.?
The Chief Financial Officer of IGM BIOSCIENCES, INC. currently on record is Misbah Tahir; five officers are currently on record for IGM BIOSCIENCES, INC., filed with California Secretary of State — bizfile Online. Management authority at IGM BIOSCIENCES, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to IGM BIOSCIENCES, INC.'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 IGM BIOSCIENCES, 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 IGM BIOSCIENCES, 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 IGM BIOSCIENCES, 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 California Secretary of State — bizfile Online and was last synced on 21 October 2026.