Brian Stone
Investor, Adviser at AdviserGPT
Mill Valley, California
Brian Stone, Investor, Adviser at AdviserGPT is an active investor based in Mill Valley, California. This profile covers what Brian Stone backs, at which stage, and how founders can reach out in 2026.
- Investor type
- Angel
- Stages
- Pre SeedSeed
- Invests in
- Artificial IntelligenceFintechHealthcare & BiotechSaaS & EnterpriseConsumer & RetailMarketing & AdTechLegalTech
- Location
- Mill Valley, California
- Typical check
- $150K
- Past investments
- 7
Notable investments
GridiumVigilant BiosciencesVelano VascularHow to reach Brian Stone
Angels and operators like Brian Stone 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 Brian Stone
Frequently Asked Questions
What does Brian Stone invest in?
Brian Stone invests in Artificial Intelligence, Fintech, Healthcare & Biotech and SaaS & Enterprise, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Brian Stone invest at?
Brian Stone typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Brian Stone's typical check size?
Brian Stone typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do I contact Brian Stone?
Unlock Brian Stone's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.