Chief Marketing Officer Kate Rouch will also step back to focus on cancer recovery.

OpenAI is undergoing another round of C-suite changes.

Chief Marketing Officer Kate Rouch will also step back to focus on cancer recovery.

OpenAI President Greg Brockman will oversee product in Simo's absence.

Three executives are stepping back at OpenAI, two for health reasons. President Greg Brockman steps in to fill part of the gap.