PhAST
Boston, US · Founded 2017 · Delaware corporation
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PhAST develops AI and machine learning imaging technology for infectious disease diagnostics, using single-cell imaging and a cloud-based platform to address antibiotic resistance. Its platform provides clinical decision support for doctors, workflow tools for hospitals, and drug development support for pharmaceutical companies.
Founders & leadership
PhAST was founded in 2017 by Roman Stocker and Kwangmin Son.
Reported raises · per SEC filings
Form D private placements$18.6M disclosed across 3 rounds · 2021–2025
▶$3.5MraisedApr 2025 · 5 investors · BiotechnologyRule 506(b)
- Roman StockerExecutive Officer, Director
- Kwangmin SonExecutive Officer, Director
- Offering amount
- $8M
- Amount sold
- $3.5M
- First sale
- Apr 2025
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$4.4MraisedDec 2022 · 3 investors · BiotechnologyRule 506(b)
- Roman StockerExecutive Officer, Director
- Kwangmin SonExecutive Officer, Director
- Offering amount
- $14M
- Amount sold
- $4.4M
- First sale
- Dec 2022
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$10.8MraisedOct 2021 · 15 investors · Other TechnologyRule 506(b)
- Kwangmin SonExecutive Officer, Director
- Roman StockerExecutive Officer, Director
- Offering amount
- $19M
- Amount sold
- $10.8M
- First sale
- Oct 2021
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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In the news
Frequently asked questions
- What does PhAST do?
- PhAST develops AI and machine learning imaging technology for infectious disease diagnostics, using single-cell imaging and a cloud-based platform to address antibiotic resistance. Its platform provides clinical decision support for doctors, workflow tools for hospitals, and drug development support for pharmaceutical companies.
- Who founded PhAST?
- PhAST was founded by Roman Stocker, Kwangmin Son in 2017.
- How much funding has PhAST raised?
- PhAST has disclosed $18.6M raised across 3 rounds.
- Where is PhAST headquartered?
- PhAST is headquartered in Boston, US.

