Insights

Strategic Funding Annexon has substantial funding and upcoming credit facility support (up to $200M with an initial $50M close), signaling financial runway for advancing late-stage trials and potential global commercialization partnerships.

Neurodegenerative Focus The company’s pipeline targets classical complement-mediated diseases affecting the brain and eye, presenting opportunities to engage with ophthalmology and neurology-focused payers, CROs, and partner networks looking to augment neuroinflammation programs.

Lead Programs Vonaprument and tanruprubart are highlighted as lead candidates with ongoing Phase 2 activities and notable conference presence, suggesting ripe touchpoints for co-development conversations, investigator‑initiated trials, and regional strategic collaborations.

Biomarker Strategy Annexon emphasizes a biomarker-driven approach to improve technical success, offering potential sales angles for companion diagnostic partners, translational research services, and data collaboration with contract research organizations.

Market Engagement Recent partnerships and scientific outreach, such as GBS/CIDP foundations and ASRS presentations, indicate a pattern of alliance-building and patient advocacy engagement that can be leveraged to identify co-promotional opportunities, access programs, and stakeholder education collaborations.

Annexon Biosciences Tech Stack

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

  • Amazon Web Services
    Cloud Hosting
  • RSS
    Content Management System
  • Google Workspace
    Email
  • Microsoft Outlook
    Email
  • DocuSign
    Miscellaneous
  • Smartsheet
    Project Management
  • Bootstrap
    UI Frameworks
  • Microsoft IIS
    Web Servers

Media & News

Annexon Biosciences's Email Address Formats

Annexon Biosciences uses at least 1 format(s):
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 LinkedInCrunchbase.

What is Annexon Biosciences's SIC code NAICS code?

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Annexon Biosciences's SIC code is 8731 - Commercial Physical and Biological Research 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 July 2026, Annexon Biosciences has approximately 111 employees across 4 continents, including North AmericaEuropeAfrica. Key team members include Chief Medical Officer: J. D.Chief Scientific Officer: R. A.Vice President Head Of Quality: N. B.. 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 Amazon Web ServicesRSSGoogle WorkspaceMicrosoft OutlookDocuSignSmartsheetBootstrapMicrosoft IIS.

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 July 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 $125Mas a post_ipo_equity.

  • $50M$100M

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

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 $125Mas a post_ipo_equity.

  • $50M$100M

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

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