# Pathos AI funding: rounds and investors > Pathos AI has raised $602M across 2 rounds since 2025. Investors include New Enterprise Associates, Vitruvian Partners and Bristol Myers Squibb. Source: https://millionrounds.com/company/pathos-ai (Millionrounds; every figure on the page links to its filing or article) United States · [Series E startup](https://millionrounds.com/companies) # Who invested in *Pathos AI* 2 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. AI Biotech Healthcare Pharma Raised this month Funding summary Updated 26 Oct 2026 **$602M** raised across 2 rounds since 2025, from 8 sources **$365M** Series D **$237M** Series E - **Latest round:** Series E, $237M Oct 2026 - **Led by:** Bristol Myers Squibb - **Biggest round:** $365M Series D · May 2025 - **Investors:** 9 (3 led) 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. 2026 **$365M** Series D **$237M** Series E - **First round:** Series D, $365M - **Biggest round:** $365M - **Between rounds:** 17 months ## The rounds - **Oct 2026** Series E **$237M** *3 new* *1 returning* [Bristol Myers Squibb](https://millionrounds.com/fund/bristol-myers-squibb) Lead [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [General Atlantic](https://millionrounds.com/fund/general-atlantic) [AstraZeneca plc](https://millionrounds.com/fund/astrazeneca-plc) Reported by Wowtale and 4 others - **May 2025** Series D **$365M** *6 new* [Vitruvian Partners](https://millionrounds.com/fund/vitruvian-partners) Lead [WestCap](https://millionrounds.com/fund/westcap) Lead [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [Lightbank](https://millionrounds.com/fund/lightbank) [Revolution](https://millionrounds.com/fund/revolution) [Builders VC](https://millionrounds.com/fund/builders-vc) Reported by Crunchbase News and 2 others SEC filing: $283M sold, first sale Apr 2025 ## 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 D** 2025 **Series E** 2026 [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [Vitruvian Partners](https://millionrounds.com/fund/vitruvian-partners) L [Bristol Myers Squibb](https://millionrounds.com/fund/bristol-myers-squibb) L [WestCap](https://millionrounds.com/fund/westcap) L [General Atlantic](https://millionrounds.com/fund/general-atlantic) [Lightbank](https://millionrounds.com/fund/lightbank) [Revolution](https://millionrounds.com/fund/revolution) [Builders VC](https://millionrounds.com/fund/builders-vc) [AstraZeneca plc](https://millionrounds.com/fund/astrazeneca-plc) ## Everyone who backed them [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) VC firm **2** rounds [Vitruvian Partners](https://millionrounds.com/fund/vitruvian-partners) VC firm **1** round, led 1 [Bristol Myers Squibb](https://millionrounds.com/fund/bristol-myers-squibb) VC firm **1** round, led 1 [WestCap](https://millionrounds.com/fund/westcap) Private equity **1** round, led 1 [General Atlantic](https://millionrounds.com/fund/general-atlantic) Private equity **1** round [Lightbank](https://millionrounds.com/fund/lightbank) VC firm **1** round [Revolution](https://millionrounds.com/fund/revolution) VC firm **1** round [Builders VC](https://millionrounds.com/fund/builders-vc) VC firm **1** round [AstraZeneca plc](https://millionrounds.com/fund/astrazeneca-plc) Growth equity **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=pathos-ai). ## Quick answers about Pathos AI ### Who invested in Pathos AI? Pathos AI's investors include New Enterprise Associates, Vitruvian Partners, Bristol Myers Squibb, WestCap and General Atlantic, and 4 more on record. Bristol Myers Squibb led its latest round. ### How much has Pathos AI raised? Pathos AI has raised $602M across 2 rounds since 2025. ### When did Pathos AI last raise? Pathos AI's most recent round was a Series E of $237M in Oct 2026, led by Bristol Myers Squibb. ### What was Pathos AI's biggest round? Pathos AI's largest round on record is $365M (Series D), in May 2025, led by Vitruvian Partners. ### Who backed Pathos AI first? Pathos AI's first round on record, in May 2025, was backed by Vitruvian Partners, WestCap and New Enterprise Associates and 3 others. ### What stage is Pathos AI at? Pathos AI's latest named round is a Series E, in Oct 2026. ### Where is Pathos AI based? Pathos AI is based in the United States. ### Who led Pathos AI's rounds? Vitruvian Partners led the Series D in 2025; Bristol Myers Squibb led the Series E in 2026. ## Companies like Pathos AI In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika) ## 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