Gyehyon J.
Angel investor in San Francisco
San Francisco, United States
Gyehyon J., Angel investor in San Francisco is an active investor based in San Francisco, United States. This profile covers what Gyehyon J. backs, at which stage, and how founders can reach out in 2026.
Gyehyon J. is a former CFO and venture capitalist turned applied data scientist, with experience in financial strategy, GTM execution, and investing in Bio, Art, and AI sectors.
- Investor type
- AngelVC
- Stages
- SeedSeries A
- Invests in
- Artificial IntelligenceBiotech & PharmaRobotics & Automation
- Location
- San Francisco, United States
- Typical check
- $625K
How to reach Gyehyon J.
Angels and operators like Gyehyon J. 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.
Connect with Gyehyon J.
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Gyehyon J. invest in?
Gyehyon J. invests in Artificial Intelligence, Biotech & Pharma and Robotics & Automation, typically at Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Gyehyon J. invest at?
Gyehyon J. typically invests at Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Gyehyon J.'s typical check size?
Gyehyon J. typically writes checks around $625K. Use it as a signal for whether your raise fits their stage.
How do I contact Gyehyon J.?
Unlock Gyehyon J.'s verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
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.