Gideon Marks
Angel investor in San Francisco
San Francisco, California
Gideon Marks, Angel investor in San Francisco is an active investor based in San Francisco, California. This profile covers what Gideon Marks backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCSyndicate
- Stages
- Pre SeedSeedSeries ASeries B
- Invests in
- Artificial IntelligenceHealthcare & Biotech
- Location
- San Francisco, California
- Typical check
- $625K
- Past investments
- 4
Notable investments
Garage Technology Ventures
BabyChakradeepdub.aiHow to reach Gideon Marks
Angels and operators like Gideon Marks 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 Accelerator.
Connect with Gideon Marks
Frequently Asked Questions
What does Gideon Marks invest in?
Gideon Marks invests in Artificial Intelligence and Healthcare & Biotech, typically at Pre Seed, Seed, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Gideon Marks invest at?
Gideon Marks typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Gideon Marks's typical check size?
Gideon Marks typically writes checks around $625K. Use it as a signal for whether your raise fits their stage.
How do I contact Gideon Marks?
Unlock Gideon Marks's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.