Formation Bio, a startup focused on applying AI to drug development with backing from OpenAI CEO Sam Altman, has raised over a quarter-billion dollars to support its ambitious product roadmap. Formation announced Wednesday that it raised $372 million in a Series D funding round led by Andreessen Horowitz with participation from drugmaker Sanofi, Sequoia, Thrive, Emerson Collective, Lachy Groom, SV Angel Growth and FPV Ventures. The new tranche brings Formation’s total raised to more than $600 mi...