# Atreca funding: rounds and investors > Atreca has raised $313M across 6 rounds since 2011. Investors include Wellington Management, Redmile Group and Gates Foundation. Every round with its source. Source: https://millionrounds.com/company/atreca (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Atreca* 6 rounds we have observed, with the 14 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 **$313M** raised across 6 rounds since 2011, from 6 sources **$160K** Debt **$6.0M** Venture **$700K** Debt **$56M** Series A **$125M** Series C **$125M** Round - **Latest round:** Round, $125M Jul 2020 - **Investors:** 14 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. 2013 2015 2017 2019 **$160K** Debt **$6.0M** Venture **$700K** Debt **$56M** Series A **$125M** Series C **$125M** Round - **First round:** Debt, $160K - **Biggest round:** $125M - **Usual gap between rounds:** 21 months ## The rounds - **Jul 2020** Round **$125M** *2 new* *2 returning* [Wellington Management](https://millionrounds.com/fund/wellington-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) Source recorded - **Sept 2018** Series C **$125M** *8 new* [Wellington Management](https://millionrounds.com/fund/wellington-management) [Redmile Group](https://millionrounds.com/fund/redmile-group) [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) [Cormorant Capital](https://millionrounds.com/fund/cormorant-capital) [Boxer Capital](https://millionrounds.com/fund/boxer-capital) [Samsara](https://millionrounds.com/fund/samsara) Aisling Tekla Reported by FinSMEs SEC filing: $125M sold, first sale Sept 2018 - **Nov 2015** Series A **$56M** *2 new* *1 returning* [Gates Foundation](https://millionrounds.com/fund/bill-and-melinda-gates-foundation) [GlaxoSmithKline](https://millionrounds.com/fund/glaxosmithkline) [Mission Bay Capital](https://millionrounds.com/fund/mission-bay-capital) From a historical funding record SEC filing: $57M sold, first sale Aug 2015 - **Aug 2013** Debt **$700K** No investor was named in the report. Reported by sec.gov SEC filing: $700K sold, first sale Aug 2013 - **Sept 2012** Venture **$6.0M** *2 new* [Gates Foundation](https://millionrounds.com/fund/bill-and-melinda-gates-foundation) [The Bill & Melinda Gates Foundation](https://millionrounds.com/fund/the-bill-and-melinda-gates-foundation) Reported by finsmes.com SEC filing: $350K sold, first sale Feb 2012 - **Oct 2011** Debt **$160K** No investor was named in the report. Reported by sec.gov SEC filing: $160K sold, first sale Mar 2011 ## Founders and team From the SEC filings it signed: 3 on the team. - **John Orwin** Executive Officer, Director i - **Susan Berland** Executive Officer i - **Tito Serafini** Executive Officer, Director i On the board, as filed i *Brian Atwood* *David Lacey* *Franklin Berger* *Lawrence Steinman* *William Robinson* ## 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. **Debt** 2011 **Venture** 2012 **Debt** 2013 **Series A** 2015 **Series C** 2018 **Round** 2020 [Wellington Management](https://millionrounds.com/fund/wellington-management) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Gates Foundation](https://millionrounds.com/fund/bill-and-melinda-gates-foundation) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) [Cormorant Capital](https://millionrounds.com/fund/cormorant-capital) [GlaxoSmithKline](https://millionrounds.com/fund/glaxosmithkline) [Mission Bay Capital](https://millionrounds.com/fund/mission-bay-capital) [Boxer Capital](https://millionrounds.com/fund/boxer-capital) ## Everyone who backed them [Wellington Management](https://millionrounds.com/fund/wellington-management) VC firm **2** rounds [Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **2** rounds [Gates Foundation](https://millionrounds.com/fund/bill-and-melinda-gates-foundation) Institutional LP **2** rounds [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) Private equity **1** round [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) VC firm **1** round [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) Private equity **1** round [Cormorant Capital](https://millionrounds.com/fund/cormorant-capital) VC firm **1** round [GlaxoSmithKline](https://millionrounds.com/fund/glaxosmithkline) VC firm **1** round [Mission Bay Capital](https://millionrounds.com/fund/mission-bay-capital) VC firm **1** round [Boxer Capital](https://millionrounds.com/fund/boxer-capital) VC firm **1** round [The Bill & Melinda Gates Foundation](https://millionrounds.com/fund/the-bill-and-melinda-gates-foundation) Investment firm **1** round [Samsara](https://millionrounds.com/fund/samsara) Hedge fund **1** round Aisling no record of our own yet **1** round Tekla no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=atreca). ## Also claim to have backed them These 3 firms list Atreca as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Aisling Capital](https://millionrounds.com/fund/aisling-capital) Private equity Per its own site [Mission BioCapital](https://millionrounds.com/fund/mission-biocapital) VC firm Per its own site [HCL Capital](https://millionrounds.com/fund/hcl-capital) Family office Per its own site ## Quick answers about Atreca ### Who invested in Atreca? Atreca's investors include Wellington Management, Redmile Group, Gates Foundation, Cormorant Asset Management and Samsara BioCapital, and 9 more on record. ### How much has Atreca raised? Atreca has raised $313M across 6 rounds since 2011. ### When did Atreca last raise? Atreca's most recent round was an Undisclosed round of $125M in Jul 2020. ### What was Atreca's biggest round? Its most recent round, $125M in Jul 2020, is also its largest on record. ### Who backed Atreca first? Atreca's first round on record, in Sept 2012, was backed by Gates Foundation and The Bill & Melinda Gates Foundation. ### What stage is Atreca at? Atreca's latest named round is an Undisclosed round, in Jul 2020. ### Where is Atreca based? Atreca is based in the United States. ## Companies like Atreca 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