Sidney Costabile

Sidney joined Two Sigma Ventures in 2023 to lead investor relations and business development.

Prior to joining Two Sigma Ventures, Sidney was a Partner at Artist Capital Management, a global, growth-oriented investment firm investing thematically in companies that benefit from secular growth. Previously, she was an Associate and later Venture Partner at Richmond Global Ventures, an early-stage, international venture firm investing in entrepreneurs building disruptive technologies. She started her career as a fintech operator and founder. Sidney holds an A.B. in Classical Chinese Literature from Dartmouth College.

Sidney lives with her husband, son, and two aussiedoodles in Brooklyn. She is a fashion resale arbitrage enthusiast and authored a widely circulated google sheet providing frameworks to tackle fertility, pregnancy and birth.