A few executives at OpenAI are moving into different positions, as reported by Bloomberg. An OpenAI representative verified the changes in personnel to TechCrunch.

Fidji Simo, CEO of AGI development, disclosed in a memo that Brad Lightcap, the COO of OpenAI, is taking on a new role overseeing “special projects,” which will entail “complex deals and investments within the organization.” He will report straight to CEO Sam Altman.

Denise Dresser, the previous CEO of Slack who recently became OpenAI’s chief revenue officer, will assume some of Lightcap’s commercial responsibilities.

Simo revealed her own news as well: She will be on medical leave for the upcoming weeks to address a neuroimmune issue.

“I have tried everything I can to prevent this, but unfortunately my body is not cooperating,” Simo stated in the memo acquired by Bloomberg.

“The timing is infuriating because we have a thrilling roadmap laid out that the team is working on, and I dislike the idea of missing even a moment of it,” she expressed.

During her absence, OpenAI co-founder and president Greg Brockman will oversee product management.

Kate Rouch, who leads marketing at OpenAI, will also resign from her position to concentrate on cancer recovery but is expected to return to a “different, more focused role when her health permits,” as stated in the memo. The firm intends to look for a new CMO.

“We have a robust leadership team dedicated to our top priorities: advancing cutting-edge research, expanding our global user base of nearly 1 billion users, and enhancing enterprise use cases,” OpenAI communicated to TechCrunch in a statement. “We are in a strong position to continue executing with continuity and drive.”

Update, 4/3/26, 6:25 PM ET with further details regarding Dresser’s responsibilities.