Grant LaFontaine is Co-Founder and CEO at Whatnot, the largest livestream shopping platform in North America, the UK, and Europe, valued at $11.5 billion. He graduated from Cornell University and built his career at the intersection of product, commerce, and community.

Grant held product roles at YouTube and Facebook, where he worked on AR/VR and the Oculus App Store. He also co-founded Kit, a consumer goods platform that was acquired by Patreon.

Grant started selling Pokemon cards online at age seven and later sold sneakers in his 20s, giving him deep insight into collectibles markets. He participated in Y Combinator W20 and had to pitch over 100 investors before securing Whatnot's first $300K in pre-seed funding.

Whatnot has raised $975 million total, with the most recent Series F round in October 2025 raising $225 million. The platform facilitated over $6 billion in gross merchandise value in 2025, more than doubling from $3 billion in 2024.

Whatnot hosts over 175,000 hours of livestreams weekly with buyers spending an average of 80 minutes per day on the platform. The company has grown to over 900 employees and expanded internationally to Canada, the UK, France, and Germany, with one in ten sellers now making it their full-time business.