Regina Lin

Questioner
DISC Type : c

Co-Founder, CEO at ThirdLayer (YC W25)

San Francisco, California, United States

Overview

Regina Lin is the Co-Founder and CEO of ThirdLayer (YC W25), an AI research and product lab building Dex, an AI copilot for the browser. A Harvard Math and Computational Science student, she previously worked in technology investment banking and private equity and co-founded an LLM evaluation platform.

Outside of her entrepreneurial pursuits, Regina is an internationally-recognized competitive classical pianist. She has been featured on NPRs "From The Top" and was an executive board member of the Harvard College Piano Society. She also founded Epoch, a 501(c)(3) focused on Arts and STEM education.

Unique fact: Regina performed on NPRs national radio show "From The Top" as a featured young classical musician.

Personality Overview

Cautious & Analytical

Not Easily Convinced

Systematic

It is quite likely of them to ask for pricing or other concessions.  They prefer to do thorough analysis of any situation. While they don't hesitate to ask questions, they are generally risk-averse and tend to be late adopters.

Topics They Care About

AI Productivity Tools
Her current company, ThirdLayer, is building Dex, an AI browser copilot designed to make knowledge work faster and more effortless by reducing context switching.
Founder Wellbeing
She has spoken on how brain health relates to productivity and resilience for founders, and posts about using tools to avoid burnout from "16 hour days. "
Human-AI Collaboration
ThirdLayer's mission is to build the next interface for human-AI collaboration, creating tools that work alongside the user in a fluid, intuitive way.

Media Appearances

Regina has no verified media appearances

Work History

1-2025
Co-Founder, CEO at ThirdLayer (YC W25)
Investment Analyst at Point72
Technology Investment Banking at Citi
Software Private Equity at GI Partners
Co-Founder at Stealth Startup

Education

W25 from Y Combinator
BA from Harvard University

More Information

Social Presence :

Prographics :

Exp : 1 Location : San Francisco, California, United States Job Level : Leadership Designation : Co-Founder, CEO at ThirdLayer (YC W25)
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Insights For Selling To Regina

During A Call Or A Meeting

DO's

  • If you have a lower priced product compared to the competition, call out the same
  • Emphasize on objective proof of ROI, help them do a thorough evaluation
  • Tell them that you will come back if you don’t have a good answer for a question

DONT's

  • Don’t overhype the product/pitch, keep it measured
  • Avoid phrases like ‘do not worry about’, ‘no one compares to’ etc.
  • Avoid rushing them, be polite and patient

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Regina is

  • Ensuring that the product delivers ROI, cost-effective pricing and process compliance are very important for them.
  • Will you ever get a clear answer from Regina

  • It doesn’t come naturally to them but they can say no if they are not convinced.

Insights For Deal Planning

    How fast (or slow) will Regina move?

  • If they have the information that they need, they can move fast at making their decisions.
  • Can Regina take some risk or not?

  • They can take some risk if they are confident that they have analyzed the circumstances well.


You And Regina

Personality Compatibility


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