Fundraising Fox
Regina Lin
InvestorFounderCEO at Thirdlayer · Founder at Dex
San Francisco, California, United States
FoundedDex · YCThirdlayer · YC
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About
Regina Lin is CEO and co-founder of Dex. She studied mathematics and computational science at Harvard, and previously co-founded Contour AI, an LLM evaluation devOps platform, while also contributing to e-commerce marketplace development and working in technology investment roles.
CEO at ThirdlayerYC W25
Intro paths
Regina went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.
In turn, Regina can intro founders to Thirdlayer's investors below.
Thirdlayer's investors · 6
Co-founders at Thirdlayer
Founder at DexYC S19
Intro paths
Regina went through Y Combinator (Summer 2019) — any YC alum in your network can reach them through the YC community.
In turn, Regina can intro founders to Dex's investors below.
Dex's investors · 8
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Co-founders at Dex
Investments
Investor
Per curated public sources.
Frequently asked questions
- Who is Regina Lin?
- Regina Lin is CEO and co-founder of Dex. She studied mathematics and computational science at Harvard, and previously co-founded Contour AI, an LLM evaluation devOps platform, while also contributing to e-commerce marketplace development and working in technology investment roles.
- Where does Regina Lin work?
- Regina Lin is Founder of Dex and CEO at Thirdlayer.
- What companies did Regina Lin found?
- Regina Lin founded Dex, Thirdlayer.
- What companies has Regina Lin invested in?
- Investments tracked here include A1Zap by A1Base.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Massachusetts Institute of Technology mafia1,487
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Thirdlayer's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights