He and Airbnb CEO Brian Chesky reportedly played a role in helping bring Altman back to OpenAI.Ĭhesky, Altman, and Shear all know each other from the Silicon Valley startup circuit. Kimberly White/Horacio Villalobos/Stefani Reynolds/Getty ImagesĮmmett Shear served as OpenAI's interim CEO for 72 hours before Sam Altman returned. Silicon Valley tech execs came together to reinstate Altman as CEO at OpenAI.