Justin Rosner

Active Investor

Partner at Battery Ventures

Boston, Massachusetts

Justin Rosner, Partner at Battery Ventures is an active investor based in Boston, Massachusetts. This profile covers what Justin Rosner backs, at which stage, and how founders can reach out in 2026.

Investor type: AngelVCPEInvestment PartnerInvestor
Stages: Early Stage VentureSeries ASeries B
Invests in: Healthcare & BiotechBiotech & PharmaSaaS & EnterpriseConsumer & RetailE-commerce & D2CDeveloper Tools & DataManufacturing & IndustrialGaming & Entertainment
Location: Boston, Massachusetts
Typical check: $1M
Past investments: 10

Notable investments

Enzo Biochem IncTitian SoftwareIfp Institute for Product QualityPST Process Sensing Technologiessteute Technologies GmbH & Co. KGSPT LabtechMobius InstituteAnalytiChem Holding GmbHGoodfellowSkalar Analytical B.V.

How to reach Justin Rosner

Angels and operators like Justin Rosner reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.

Frequently Asked Questions

What does Justin Rosner invest in?

Justin Rosner invests in Healthcare & Biotech, Biotech & Pharma, SaaS & Enterprise and Consumer & Retail, typically at Early Stage Venture, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.