Mark Siegel is an angel investor based in Jackson, Wyoming, United States. The known portfolio counts 2 companies: GridRival and Superplum.
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Investment focus
- Sector
- AIFinTechHealthcareSaaS
Contacts
Mark Siegel portfolio companies (2)
- GridRival
- Superplum
Affiliated funds' portfolios
Managing Director at Menlo Ventures, whose known portfolio counts 10 companies
- True Anomaly
- Axiom
- Legora
- Gimlet Labs
- Standard Kernel
- Grow Therapy
- Elorian
- Manifest OS
- Arc Boats
- BrainGrid
Investor Profile
The listing covers sectors AI, FinTech, Healthcare and SaaS, and focus areas Cloud Infrastructure, Cybersecurity, Data Analytics and Drug Discovery. Startups operating in these areas may find Mark Siegel relevant.
Mark Siegel appears in Seed and Series A rounds across the known deals.
The portfolio and focus above give founders context on whether Mark Siegel matches their raise.
Colleagues at Menlo Ventures
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John Jarve
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Matt Kraning
Partner
San Francisco, United States
Mark Siegel
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Jackson, United States
Shawn Carolan
Partner
Palo Alto, United States
Greg Rudin
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San Francisco, United States
Houman Haghighi
Partner
San Diego, United States
Jason Yau
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Michelle Aguinis
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Miami, United States
Tyler Sosin
Venture Partner
New York, United States
Steve Sloane
Partner
Menlo Park, United States
Jean-Paul Sanday
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Partner
United States
Deedy Das
Principal
Palo Alto, United States
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Partner
San Francisco, United States
Venky G.
Partner
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Frequently asked questions
Who is Mark Siegel?
Mark Siegel is an angel investor based in Jackson, Wyoming, United States with 2 known investments on file, among them GridRival and Superplum. The sections above list the sectors, stages and firms attached to that record.
What does Mark Siegel invest in?
Listed sectors include AI, FinTech, Healthcare and SaaS; listed focus areas include Cloud Infrastructure, Cybersecurity, Data Analytics and Drug Discovery. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Mark Siegel invest at?
The known deals of Mark Siegel include Seed and Series A rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Mark Siegel listed at?
Mark Siegel is listed as Managing Director at Menlo Ventures. 26 other people in the database share a firm with Mark Siegel.
How do I contact Mark Siegel?
An email address, a phone number and a LinkedIn page are on file for Mark Siegel. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal