# A2 Biotherapeutics funding: rounds and investors > A2 Biotherapeutics has raised $57M across 2 rounds since 2019. Investors include Samsara BioCapital, Casdin Capital and The Column Group. Source: https://millionrounds.com/company/a2-biotherapeutics (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *A2 Biotherapeutics* 2 rounds we have observed, with the 5 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 Funding summary Updated 26 Oct 2026 **$57M** raised across 2 rounds since 2019, from 2 sources **$57M** Series A **$300K** Grant - **Latest round:** Grant, $300K May 2025 - **Biggest round:** $57M Series A · Nov 2019 - **Investors:** 5 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. 2020 2021 2022 2023 2024 2025 **$57M** Series A **$300K** Grant - **First round:** Series A, $57M - **Biggest round:** $57M - **Between rounds:** 5.5 years ## The rounds - **May 2025** Grant **$300K** *1 new* *1 returning* [Casdin Capital](https://millionrounds.com/fund/casdin-capital) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) Source recorded - **Nov 2019** Series A **$57M** *4 new* [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [The Column Group](https://millionrounds.com/fund/the-column-group) [Nextech Invest](https://millionrounds.com/fund/nextech-invest) [Vida Ventures](https://millionrounds.com/fund/vida-ventures) Reported by FinSMEs ## Founders and team From A2 Biotherapeutics's own website: 4 on the team. - **James Robinson** President & Chief Executive Officer - **Thomas Leung** Chief Financial Officer - **Vikram Joshi** Chief Business Officer - **Ryan Card** General Counsel ## 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 A** 2019 **Grant** 2025 [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [Casdin Capital](https://millionrounds.com/fund/casdin-capital) [The Column Group](https://millionrounds.com/fund/the-column-group) [Nextech Invest](https://millionrounds.com/fund/nextech-invest) [Vida Ventures](https://millionrounds.com/fund/vida-ventures) ## Everyone who backed them [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) VC firm **2** rounds [Casdin Capital](https://millionrounds.com/fund/casdin-capital) VC firm **1** round [The Column Group](https://millionrounds.com/fund/the-column-group) VC firm **1** round [Nextech Invest](https://millionrounds.com/fund/nextech-invest) Private equity **1** round [Vida Ventures](https://millionrounds.com/fund/vida-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=a2-biotherapeutics). ## Quick answers about A2 Biotherapeutics ### Who invested in A2 Biotherapeutics? A2 Biotherapeutics's investors include Samsara BioCapital, Casdin Capital, The Column Group, Nextech Invest and Vida Ventures. ### How much has A2 Biotherapeutics raised? A2 Biotherapeutics has raised $57M across 2 rounds since 2019. ### When did A2 Biotherapeutics last raise? A2 Biotherapeutics's most recent round was a Grant of $300K in May 2025. ### What was A2 Biotherapeutics's biggest round? A2 Biotherapeutics's largest round on record is $57M (Series A), in Nov 2019. ### Who backed A2 Biotherapeutics first? A2 Biotherapeutics's first round on record, in Nov 2019, was backed by Samsara BioCapital, The Column Group and Nextech Invest and 1 others. ### What stage is A2 Biotherapeutics at? A2 Biotherapeutics's latest named round is a Grant, in May 2025. ### Where is A2 Biotherapeutics based? A2 Biotherapeutics is based in the United States. ## Companies like A2 Biotherapeutics 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