Mark Jacobstein
General Partner at South Park Commons
Stanford, California
Mark Jacobstein, General Partner at South Park Commons is an active investor based in Stanford, California. This profile covers what Mark Jacobstein backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment PartnerAcceleratorInvestor
- Stages
- Early Stage VentureSeed
- Invests in
- Artificial IntelligenceHealthcare & BiotechGaming & EntertainmentSaaS & Enterprise
- Location
- Stanford, California
- Typical check
- $375K
- Past investments
- 10
Notable investments
Badongo.com
Immunai
Numerous
ScootLuminopia
SleuthFull Circle Fund
Disconnect
OdinOurHealthMateHow to reach Mark Jacobstein
Angels and operators like Mark Jacobstein 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.
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Cite this page
Round Funded. "Mark Jacobstein." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/mark-jacobstein
Frequently Asked Questions
What does Mark Jacobstein invest in?
Mark Jacobstein invests in Artificial Intelligence, Healthcare & Biotech, Gaming & Entertainment and SaaS & Enterprise, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Mark Jacobstein invest at?
Mark Jacobstein typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Mark Jacobstein's typical check size?
Mark Jacobstein typically writes checks around $375K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
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What is Round Funded?
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