Phases
YC S25San Francisco, US · Founded 2025 · 3 employees · 7 known investors
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Phases provides AI-powered oversight for clinical trials, using automated agents to detect operational issues, maintain data standards, and ensure regulatory compliance without manual intervention.
Also known as Phases Innovations, Inc. · Patiently
Founders & leadership· Y Combinator alumni (S25)
Phases was founded in 2025 by James Wall, Anton Zaliznyi, and Jonathan van Wersch.



Investors · 7
How we know: Dnipro's portfolio page · Y Combinator's founder network · Not right? Tell us
How we know: TRAC (Third Round Analytics Capital)'s portfolio page · Y Combinator's founder network · Not right? Tell us
How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
Funding
SEC filings, press & company announcements- Undisclosed amountangel roundDec 2023Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Related companies · 8
Companies working in the same space as Phases.
Legal entities · 1
corporate structureFrequently asked questions
- What does Phases do?
- Phases provides AI-powered oversight for clinical trials, using automated agents to detect operational issues, maintain data standards, and ensure regulatory compliance without manual intervention.
- Who founded Phases?
- Phases was founded by James Wall, Anton Zaliznyi, Jonathan van Wersch in 2025.
- Who are Phases's investors?
- Phases's investors include Dnipro, TRAC (Third Round Analytics Capital), Y Combinator, Blast.Club, C Square Capital, SAV (Scale Asia Ventures), u.ventures.
- Where is Phases headquartered?
- Phases is headquartered in San Francisco, US.











