Joel Rosenberg, Angel investor in San Francisco is an active investor based in San Francisco, United States. This profile covers what Joel Rosenberg backs, at which stage, and how founders can reach out in 2026.
As Managing Director of IPbiz2biz, Joel Rosenberg helps startups, universities, and global technology companies create and monetize high-value inventions.
Joel Rosenberg invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Seed and Early Stage Venture.
- Investor type
- Angel
- Stages
- SeedEarly Stage Venture
- Invests in
- SaaS & EnterpriseHardware & Deep Tech
- Location
- San Francisco, United States
- Typical check
- $375K
How to reach Joel Rosenberg
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About this profile
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Round Funded. "Joel Rosenberg." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/joel-rosenberg
Frequently Asked Questions
Who is Joel Rosenberg?
Joel Rosenberg, Angel investor in San Francisco is an active investor based in San Francisco, United States. Joel Rosenberg invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Seed and Early Stage Venture.
What does Joel Rosenberg invest in?
Joel Rosenberg invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Seed and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Joel Rosenberg invest at?
Joel Rosenberg typically invests at Seed and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Joel Rosenberg's typical check size?
Joel Rosenberg typically writes checks around $375K. 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.