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Phases

YC S25

San 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.

JWJames Wall
James WallCo-Founder & CEOJames Wall has worked on AI data science solutions for major pharmaceutical and consumer companies including J&J and Unilever. He previously built business cases for corporate restructuring initiatives in the consumer goods sector.
AZAnton Zaliznyi
Anton ZaliznyiCo-Founder / Chief AI OfficerAnton Zaliznyi worked as a software engineer at Palantir and conducted AI research at the University of Toronto, with prior experience building autonomous systems at a defense startup and distributed processing systems at Avid. His research background includes deep learning work on robotic pose estimation, and he now leads Phases, which develops AI agents for clinical trial automation.
JVJonathan van Wersch
Jonathan van WerschCo-Founder & CTOJonathan van Wersch worked as a software engineer at Meta on machine learning integration for mobile ads, and previously at UK-based Improbable where he led growth of the web platform team. He holds bachelor's and master's degrees in mechanical engineering from the University of Bath, where he served as project manager and engineering lead for the university's rocket team.

Investors · 7

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

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Phases photo

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Companies working in the same space as Phases.

Legal entities · 1

corporate structure
Phases Innovations, Inc.

Frequently 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.