OpenAI’s No. 2 Executive Fidji Simo Steps Down Due to Extended Medical Leave
Fidji Simo, OpenAI’s No. 2 executive, will shift from full-time to part-time advisory work after her medical leave proved longer than expected, the WSJ reported July 9, 2026. She joined in May 2025 as CEO of Applications reporting to Sam Altman, disclosed an April relapse of a neuroimmune condition, led Instacart as CEO from 2021, and joined OpenAI’s board in 2024.