# Annexon Biosciences funding: rounds and investors > Annexon Biosciences has raised $180M across 3 rounds since 2016. Investors include New Enterprise Associates, BlackRock and Janus Henderson Investors. Source: https://millionrounds.com/company/annexon-biosciences (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Annexon Biosciences* 3 rounds we have observed, with the 6 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Biotech Healthcare Raised 4 months ago Funding summary Updated 26 Oct 2026 **$180M** raised across 3 rounds since 2016, from 3 sources **$44M** Series B **$86M** Round **$50M** Debt - **Latest round:** Debt, $50M Jul 2026 - **Biggest round:** $86M Round · Nov 2025 - **Investors:** 6 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2016 2018 2020 2022 2024 2026 **$44M** Series B **$86M** Round **$50M** Debt - **First round:** Series B, $44M - **Biggest round:** $86M - **Usual gap between rounds:** 9.3 years ## The rounds - **Jul 2026** Debt **$50M** *1 new* *3 returning* [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [BlackRock](https://millionrounds.com/fund/blackrock) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Redmile Group](https://millionrounds.com/fund/redmile-group) Source recorded - **Nov 2025** Round **$86M** *4 new* *1 returning* [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [BlackRock](https://millionrounds.com/fund/blackrock) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Source recorded - **Jun 2016** Series B **$44M** *1 new* [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) Reported by Businesswire ## Founders and team From Annexon Biosciences's own website: 3 on the team. - **Jennifer Lew** Evp & Chief Financial Officer - **Linda Fitzpatrick** Chief Human Resources Officer - **Will Waddill** Lead Independent Director (interim) ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series B** 2016 **Round** 2025 **Debt** 2026 [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [BlackRock](https://millionrounds.com/fund/blackrock) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) ## Everyone who backed them [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) VC firm **3** rounds [BlackRock](https://millionrounds.com/fund/blackrock) Asset manager **2** rounds [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **2** rounds [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) VC firm **1** round [Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **1** round [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Asset manager **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=annexon-biosciences). ## Also claim to have backed them This firm lists Annexon Biosciences as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [BB Biotech](https://millionrounds.com/fund/bb-biotech) Growth equity Per its own site ## Quick answers about Annexon Biosciences ### Who invested in Annexon Biosciences? Annexon Biosciences's investors include New Enterprise Associates, BlackRock, Janus Henderson Investors, Correlation Ventures and Redmile Group, and 1 more on record. ### How much has Annexon Biosciences raised? Annexon Biosciences has raised $180M across 3 rounds since 2016. ### When did Annexon Biosciences last raise? Annexon Biosciences's most recent round was a Debt of $50M in Jul 2026. ### What was Annexon Biosciences's biggest round? Annexon Biosciences's largest round on record is $86M (Undisclosed round), in Nov 2025. ### Who backed Annexon Biosciences first? Annexon Biosciences's first round on record, in Jun 2016, was backed by New Enterprise Associates. ### What stage is Annexon Biosciences at? Annexon Biosciences's latest named round is a Debt, in Jul 2026. ### Where is Annexon Biosciences based? Annexon Biosciences is based in the United States. ## Companies like Annexon Biosciences In the same sector, and raised in the last eighteen months. [**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app