Insights

Strategic financing Annexon has secured a substantial debt facility (up to 200 million) and earlier tranches, signaling strong liquidity to support global commercialization and pipeline expansion, presenting an opportunity to engage in partnerships around scale-up manufacturing, commercialization planning, and co-financing strategies.

Neuroinflammation focus With a pipeline targeting classical complement-mediated neuroinflammatory diseases and a lead program in vonaprument and tanruprubart, there is potential to pursue collaborations on biomarker-driven trials, companion diagnostics, and strategic regional licenses in neurology and ophthalmology markets.

Clinical milestones Phase 2 and late-stage activities, including studies presented at ASRS and ARCHER baseline analyses, indicate near-term data readouts that can open discussions for investigator-sponsored studies, CRO partnerships, and early access/coverage collaboration with payers.

Global commercialization Recent financing paired with statements of global commercialization plans suggests opportunities for contract manufacturing, supply chain partnerships, regional market access, and adaptive pricing strategies aligned to anticipated ophthalmology and neurodegenerative indications.

Executive network New board member appointment and ongoing investor communications imply a window to engage strategic investors and advisory partnerships, as well as opportunities to present co-development deals and joint ventures to leverage leadership expertise.

Similar companies to Annexon Biosciences

Annexon Biosciences Tech Stack

Annexon Biosciences uses 8 technology products and services including Tableau, Amazon Web Services, Cookiebot, and more. Explore Annexon Biosciences's tech stack below.

Media & News

Annexon Biosciences's Email Address Formats

Annexon Biosciences uses at least 4 email formats:
Annexon Biosciences Email FormatsExamplePercentage
FLast@annexonbio.comJDoe@annexonbio.com
88%
First.Last@annexonbio.comJohn.Doe@annexonbio.com
6%
First@annexonbio.comJohn@annexonbio.com
4%
First_Last@annexonbio.comJohn_Doe@annexonbio.com
2%

Frequently Asked Questions

What is Annexon Biosciences's phone number?

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You can contact Annexon Biosciences's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Annexon Biosciences's official website and social media links?

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Annexon Biosciences's official website is annexonbio.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Annexon Biosciences generate?

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As of August 2026, Annexon Biosciences's annual revenue is estimated to be $50M - $100M.

What is Annexon Biosciences's SIC code and NAICS code?

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Annexon Biosciences's SIC code is 8731 - Commercial Physical and Biological Research and NAICS code is 541714 - Research and Development in Biotechnology (except Nanobiotechnology).

How many employees does Annexon Biosciences have currently?

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As of August 2026, Annexon Biosciences has approximately 115 employees across 4 continents, including North America, Europe and Africa. Key team members include Chief Medical Officer: J. D., Chief Scientific Officer: R. A. and Vice President Regulatory Affairs: K. K. Explore Annexon Biosciences's employee directory with LeadIQ.

What industry does Annexon Biosciences belong to?

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Annexon Biosciences operates in the Biotechnology Research industry.

What technology does Annexon Biosciences use?

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Annexon Biosciences's tech stack includes Tableau, Amazon Web Services, Cookiebot, SAP, ADP, Office 365, Greenhouse and Adobe Creative Suite.

What is Annexon Biosciences's email format?

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Annexon Biosciences's email format typically follows the pattern of FLast@annexonbio.com. Find more Annexon Biosciences email formats with LeadIQ.

How much funding has Annexon Biosciences raised to date?

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As of August 2026, Annexon Biosciences has raised $720M in funding. The last funding round occurred on Nov 12, 2025 for $125M.

When was Annexon Biosciences founded?

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Annexon Biosciences was founded in 2011.
Annexon Biosciences logo

Annexon Biosciences

Biotechnology ResearchCalifornia, United States51-200 Employees

Annexon Biosciences is a mid-sized biotechnology company based in South San Francisco, California, focused on developing therapies that modulate the immune system by targeting the classical complement pathway. Its work centers on blocking C1q, the initiating molecule of this pathway, with the aim of treating autoimmune, neurodegenerative, and ophthalmic disorders driven by classical complement activation. The company emphasizes a biomarker-driven approach intended to improve the probability that its portfolio reaches technical success. 

Its clinical-stage portfolio includes ANX005, ANX007, and ANX009, with ANX005 administered intravenously, ANX007 intravitreally, and ANX009 subcutaneously. The target patient population comprises individuals affected by classical complement-mediated diseases of the body, brain, and eye. In 2026, Annexon partnered with the GBS/CIDP Foundation International to advance the GBS 110 awareness campaign through the year.

Section iconCompany Overview

Phone number
SIC Code
8731 - Commercial Physical and Biological Research
NAICS Code
541714 - Research and Development in Biotechnology (except Nanobiotechnology)
Founded
2011
Employees
51-200

Section iconFunding & Financials

  • $720M

    Annexon Biosciences has raised a total of $720M of funding over 9 rounds. Their latest funding round was raised on Nov 12, 2025 in the amount of $125M as a Post IPO Equity.

  • $50M - $100M

    Annexon Biosciences's revenue is estimated to be in the range of $50M - $100M

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