AC

Alexandra Cantley

VC

Managing Partner, Polaris Partners

Chemical biologist building early-stage biotech companies

New York, NY4 notable investments
Pre-SeedSeedSeries A
BioHealthcare

Background

Alexandra Cantley is a Managing Partner at Polaris Partners in the New York office who joined in 2019. She focuses on early-stage biotech and healthcare investments and has served on the boards of Auron Therapeutics, TRex Bio, SunBird Bio, and EpiBiologics. She began her career as a scientist at Vertex Pharmaceuticals and Inzen Therapeutics before moving to venture. She holds a PhD in Chemical Biology from Harvard University with research focused on natural product discovery, and a BS from New York University.

Investment Thesis

Early-stage biotech companies grounded in rigorous chemistry and biology, particularly novel drug modalities and genetic medicines.

Investment Focus

Stages

Pre-SeedSeedSeries A

Sectors

BioHealthcare

Based in: New York, NY (North America)

Notable Investments

Last updated: Jun 11, 2026