United States · Who invested in Ataraxis?
Ataraxis's investors include Obvious Ventures, Giant Ventures, AIX Ventures, Founders Fund and Bertelsmann, and 2 more on record. AIX Ventures led its latest round.
2025
$4.0MSeed$20MSeries A
United States · Series A startup
Who invested in Ataraxis
2 rounds we have observed, with the 7 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.
Follow Ataraxis and see its new rounds in your feed. Start following
Funding summaryUpdated 5 Nov 2026
$24Mraised across 2 rounds since 2024, from 3 sources
$4.0MSeed$20MSeries A
- Latest round
- Series A, $20MMar 2025
- Led by
- AIX Ventures
- Step-upi
- 5.1×
- Investors
- 7 (3 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $4.0M Nov 2024
- Biggest round
- $20M Series A · Mar 2025
- Between rounds
- 4 months from the last two
The rounds
- Mar 2025Series A$20M5 new2 returning
Reported by TechCrunch and 1 otherSEC filing: $20M sold, first sale Dec 2024
- Nov 2024Seed$4.0M2 new
Obvious VenturesLead
Giant VenturesLead
Reported by AlleyWatchSEC filing: $20M sold, first sale Dec 2024
Founders and team
From Ataraxis's own website: 6 on the team.
- Stephen CilleyChief Executive Officer
- Eric SmithChief Revenue Officer
- Glen ScottChief People Officer
- Marv LasnickChief Technology Officer
- Autumn BrownVP, Finance
- Lisa LavinDirector of Communication
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.
Seed2024Series A2025Obvious VenturesLGiant VenturesL
AIX VenturesL
Founders Fund
Bertelsmann
Floating Point
Thiel Bio
Obvious VenturesLGiant VenturesLAIX VenturesLFounders FundBertelsmannFloating PointThiel BioEveryone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Ataraxis
How much has Ataraxis raised?
Ataraxis has raised $24M across 2 rounds since 2024.
When did Ataraxis last raise?
Ataraxis's most recent round was a Series A of $20M in Mar 2025, led by AIX Ventures.
What was Ataraxis's biggest round?
Its most recent round, $20M in Mar 2025, is also its largest on record.
Who backed Ataraxis first?
Ataraxis's first round on record, in Nov 2024, was backed by Obvious Ventures and Giant Ventures.
What stage is Ataraxis at?
Ataraxis's latest named round is a Series A, in Mar 2025.
Where is Ataraxis based?
Ataraxis is based in the United States.
Who led Ataraxis's rounds?
Obvious Ventures led the Seed in 2024; AIX Ventures led the Series A in 2025.
Companies like Ataraxis
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.