# Atara Biotherapeutics funding: rounds and investors > Atara Biotherapeutics has raised $69M across 4 rounds since 2013. Investors include Kleiner Perkins Caufield & Byers, Kleiner Perkins and DAG Ventures. Source: https://millionrounds.com/company/atara-biotherapeutics (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Atara Biotherapeutics* 4 rounds we have observed, with the 9 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 Raised 6 months ago Funding summary Updated 26 Oct 2026 **$69M** raised across 4 rounds since 2013, from 4 sources **$39M** Series B **$14M** Series B **$16M** Round **$550K** Round - **Latest round:** Round, $550K May 2026 - **Biggest round:** $39M Series B · Dec 2013 - **Investors:** 9 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. 2015 2017 2019 2021 2023 2025 **$39M** Series B **$14M** Series B **$16M** Round **$550K** Round - **First round:** Series B, $39M - **Biggest round:** $39M - **Usual gap between rounds:** 11.3 years ## The rounds - **May 2026** Round **$550K** *2 returning* [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins) [Redmile Group](https://millionrounds.com/fund/redmile-group) Source recorded - **May 2025** Round **$16M** *2 new* [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins) [Redmile Group](https://millionrounds.com/fund/redmile-group) Source recorded - **Jan 2014** Series B **$14M** *1 new* *6 returning* [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) [DAG Ventures](https://millionrounds.com/fund/dag-ventures) [Domain Associates](https://millionrounds.com/fund/domain-associates) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [Celgene](https://millionrounds.com/fund/celgene) [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) [Amgen Ventures](https://millionrounds.com/fund/amgen-ventures) From a historical funding record - **Dec 2013** Series B **$39M** *6 new* [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) [DAG Ventures](https://millionrounds.com/fund/dag-ventures) [Domain Associates](https://millionrounds.com/fund/domain-associates) [Celgene](https://millionrounds.com/fund/celgene) [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) [Amgen Ventures](https://millionrounds.com/fund/amgen-ventures) From a historical funding record ## Founders and team From Atara Biotherapeutics's own website: 8 on the team. - **Jim Sesic** Senior Vice President, Regulatory Affairs - **Kevin Sarney** Interim Chief Financial Officer - **Brian Cherry** Director - **Gregory A. Ciongoli** Chairman of the Board - **James Huang** Director - **Matthew Fust** Director, Audit Committee Chair - **Nachi Subramanian** Director - **William Heiden** Director, Compensation Chair ## 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** 2013 **Series B** 2014 **Round** 2025 **Round** 2026 [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins) [DAG Ventures](https://millionrounds.com/fund/dag-ventures) [Domain Associates](https://millionrounds.com/fund/domain-associates) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Celgene](https://millionrounds.com/fund/celgene) [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) [Amgen Ventures](https://millionrounds.com/fund/amgen-ventures) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) ## Everyone who backed them [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) VC firm **2** rounds [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins) VC firm **2** rounds [DAG Ventures](https://millionrounds.com/fund/dag-ventures) VC firm **2** rounds [Domain Associates](https://millionrounds.com/fund/domain-associates) VC firm **2** rounds [Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **2** rounds [Celgene](https://millionrounds.com/fund/celgene) Growth equity **2** rounds [EcoR1 Capital](https://millionrounds.com/fund/ecor1-capital) Private equity **2** rounds [Amgen Ventures](https://millionrounds.com/fund/amgen-ventures) Growth equity **2** rounds [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=atara-biotherapeutics). ## Quick answers about Atara Biotherapeutics ### Who invested in Atara Biotherapeutics? Atara Biotherapeutics's investors include Kleiner Perkins Caufield & Byers, Kleiner Perkins, DAG Ventures, Domain Associates and Redmile Group, and 4 more on record. ### How much has Atara Biotherapeutics raised? Atara Biotherapeutics has raised $69M across 4 rounds since 2013. ### When did Atara Biotherapeutics last raise? Atara Biotherapeutics's most recent round was an Undisclosed round of $550K in May 2026. ### What was Atara Biotherapeutics's biggest round? Atara Biotherapeutics's largest round on record is $39M (Series B), in Dec 2013. ### Who backed Atara Biotherapeutics first? Atara Biotherapeutics's first round on record, in Dec 2013, was backed by Kleiner Perkins Caufield & Byers, DAG Ventures and Domain Associates and 3 others. ### What stage is Atara Biotherapeutics at? Atara Biotherapeutics's latest named round is an Undisclosed round, in May 2026. ### Where is Atara Biotherapeutics based? Atara Biotherapeutics is based in the United States. ## Companies like Atara 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)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio) ## 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