Justin Feng, Senior Associate at Atlas Venture is an active investor based in Cambridge, Massachusetts. This profile covers what Justin Feng backs, at which stage, and how founders can reach out in 2026.
Justin Feng focuses on life sciences investing, venture creation, and business development.
Justin Feng invests in Healthcare & Biotech, typically at Early Stage Venture, Seed and Series A.
- Firm
- Atlas Venture
- Investor type
- VC
- Stages
- Early Stage VentureSeedSeries A
- Invests in
- Healthcare & Biotech
- Location
- Cambridge, Massachusetts
- Typical check
- $500K
How to reach Justin Feng
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Cite this page
Round Funded. "Justin Feng." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/justin-feng
Frequently Asked Questions
Who is Justin Feng?
Justin Feng, Senior Associate at Atlas Venture is an active investor based in Cambridge, Massachusetts. Justin Feng invests in Healthcare & Biotech, typically at Early Stage Venture, Seed and Series A.
What does Justin Feng invest in?
Justin Feng invests in Healthcare & Biotech, typically at Early Stage Venture, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Justin Feng invest at?
Justin Feng typically invests at Early Stage Venture, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Justin Feng's typical check size?
Justin Feng typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.