Siobhan Nolan Mangini, Partner at Venrock is an active investor based in San Francisco, California. This profile covers what Siobhan Nolan Mangini backs, at which stage, and how founders can reach out in 2026.
Siobhan Nolan Mangini is a Partner at Venrock, focusing on early-stage investments in healthcare and technology companies.
Siobhan Nolan Mangini invests in Healthcare & Biotech and Digital Health & HealthTech, typically at Early Stage Venture, Seed and Series A.
- Investor type
- VC
- Stages
- Early Stage VentureSeedSeries A
- Invests in
- Healthcare & BiotechDigital Health & HealthTech
- Location
- San Francisco, California
- Typical check
- $500K
How to reach Siobhan Nolan Mangini
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Round Funded. "Siobhan Nolan Mangini." Round Funded investor database, updated November 3, 2026.
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Frequently Asked Questions
Who is Siobhan Nolan Mangini?
Siobhan Nolan Mangini, Partner at Venrock is an active investor based in San Francisco, California. Siobhan Nolan Mangini invests in Healthcare & Biotech and Digital Health & HealthTech, typically at Early Stage Venture, Seed and Series A.
What does Siobhan Nolan Mangini invest in?
Siobhan Nolan Mangini invests in Healthcare & Biotech and Digital Health & HealthTech, typically at Early Stage Venture, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Siobhan Nolan Mangini invest at?
Siobhan Nolan Mangini typically invests at Early Stage Venture, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Siobhan Nolan Mangini's typical check size?
Siobhan Nolan Mangini 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.