Nicolas Bustamante

About

I dropped out of École Normale Supérieure at 21 to build Doctrine, which became Europe’s largest legal information platform with 25,000 customers. Along the way we sued France before the European Court of Human Rights to force the open data of court decisions. We sold Doctrine to Summit Partners, a private equity firm, in 2023, and it was then sold to LexisNexis in 2026.

I moved to San Francisco and started Fintool, born out of my admiration for Buffett and Munger. I wanted to build an AI that could analyze businesses exactly like Warren does: reading filings, building conviction one annual report at a time. Fintool was backed by Y Combinator, Anthology Fund, and Menlo Ventures, and acquired by Microsoft in March 2026.

Now at Microsoft, I lead a team building proactive AI agents that understand your work, operate in the background, and get things done before you ask.

Outside of work, I train Brazilian jiu jitsu and bike around San Francisco.

Writings

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