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OpenAI Product Chief Fidji Simo Takes Medical Leave

Source: wsj.com

TL;DR

OpenAI product and business chief Fidji Simo is taking medical leave for several weeks.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[2]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?gaa_at=eafs&gaa_n=AWEtsqeTwYkrv6E0IVHcovTE10uvawkTIUb8QA3OIccox6SWII8P6B7mCZXP&gaa_sig=x8onMenYIuQMT0ppBc_-BuwS9_JIlbvP4uXxAkfb9fxDzlIbOK5XpAdYdM1UMAQ-Wfva4mRAzEYKATJ6nkmzqQ%3D%3D&gaa_ts=69d17e98)
Leave stems from worsened neuroimmune condition after postponing tests since starting last August.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)
Absence hits as OpenAI revamps leadership and eyes public market debut.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)

The story at a glance

OpenAI's product and business chief Fidji Simo announced she is taking several weeks of medical leave due to a worsening neuroimmune condition. She shared this in an internal note to staff, noting she had delayed tests and therapies to focus on work since joining last August. The news comes amid OpenAI's leadership changes and preparations for a public listing.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)

Key moments & milestones

August 2025: Simo joins OpenAI as product and business chief, shortly after a relapse of her neuroimmune condition.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)
Recent weeks: Simo takes first time off for medical tests two weeks before a break.[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)
April 3-4, 2026: Simo sends internal note announcing medical leave for several weeks.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[4]](https://www.theverge.com/ai-artificial-intelligence/906965/openais-agi-boss-is-taking-a-leave-of-absence)

Signature highlights

Simo postponed medical tests and new therapies throughout her tenure to avoid missing work days.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)
Condition described as neuroimmune; other reports specify postural orthostatic tachycardia syndrome (POTS), which Simo has discussed publicly.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)[[5]](https://www.cnbc.com/2026/04/03/openai-fidji-simo-medical-leave-executive-changes.html)
Leave occurs during OpenAI leadership revamp, with the company preparing for public market debut.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)
Simo previously led Instacart as CEO before joining OpenAI.[[6]](https://www.axios.com/2026/04/03/openai-fidji-simo-medical-leave-reshuffle)

Key quotes

"A neuroimmune condition had worsened and that she had postponed medical tests and new therapies to stay focused at work since starting her job last August." – Fidji Simo, internal note to staff.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)
"It’s now clear that I’ve pushed a little too far and I really need to try new interventions to stabilize my health." – Fidji Simo, internal memo.[[3]](https://www.wired.com/story/openais-fidji-simo-is-taking-a-leave-of-absence)[[6]](https://www.axios.com/2026/04/03/openai-fidji-simo-medical-leave-reshuffle)

Why it matters

OpenAI faces leadership flux at a pivotal time with reorganization and IPO preparations underway. Product and business teams may see temporary shifts in oversight during Simo's absence. Watch for updates on her return and any further executive changes.[[1]](https://www.wsj.com/tech/openais-top-executive-fidji-simo-to-take-medical-leave-from-company-d6fab97c?mod=hp_lead_pos5)