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Annexon, Inc.

Pharmaceutical company · Brisbane, California, United States · Nasdaq: ANNX

Annexon, Inc. is a pharmaceutical company headquartered in Brisbane, California, United States. Its earliest recorded incorporation is in 2011. Its shares trade on Nasdaq under the ticker ANNX. It has received 2 US government small-business research awards (SBIR/STTR) from health agencies, $1.4 million in total, most recently in 2016. It has reported private securities offerings to the US SEC, most recently $130 million sold in a notice filed in 2022.

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Annexon at a glance

Typepharmaceutical company
HeadquartersBrisbane, California, United States
Earliest incorporation on record2011
Stock listingNasdaq: ANNX
SEC industryPharmaceutical Preparations
Employees (per SBIR records)6
SEC CIK1528115

What does Annexon do?

US government research funding

2 SBIR/STTR small-business research awards from US health agencies, $1.4 million in total (2012 to 2016). NIH funding came from the National Institute on Aging.

Private fundraising reported to the SEC

4 Form D notices; the most recent reported $130.5 million sold (2022).

Frequently asked questions about Annexon

Where is Annexon headquartered?

Annexon, Inc. is headquartered in Brisbane, California, United States.

What does Annexon do?

Annexon, Inc. is a pharmaceutical company. Its SEC industry classification is Pharmaceutical Preparations.

Is Annexon a public company?

Yes. Annexon, Inc. trades on Nasdaq under the ticker ANNX.

When was Annexon founded?

The earliest incorporation on record for Annexon, Inc. is in 2011, according to public company registers.

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Sources

Location data: GeoNames (geonames.org), CC BY 4.0.

Last updated 2026-09-23.