About Sarah Istel
Sarah Istel is a managing director at Riven.
Experience
This experience comes from SEC filings. The years are when the filings name Sarah Istel in the role, so the role may have started earlier or lasted longer.
Riven Corp
Managing Director
2026 · New York, NY
Develops AI tools to help domestic producers process critical minerals.
Key Colleagues at Startups
The people Sarah Istel works with at each company, as listed on that company's latest Form D.
Riven Corp · Form D, Aug 10, 2026
KB
Kurt Breitenkamp
Chief Executive Officer and director
IS
Ian Samuels
Founder and Managing Partner, director
OC
Orion Cohen
Chief Technology Officer and director