The man who built OpenAI's business is leaving. Nobody will say why.
Brad Lightcap joined in 2018, when OpenAI was a research lab with no product and no revenue. This month he posted that he is leaving.
He is not alone. Denise Dresser, the chief revenue officer, is out roughly eight months after taking the job; Dali Rajic replaces her. Fidji Simo has stepped down. Bill Peebles, who ran Sora, left in April. Count them up across the year and the number of senior departures runs to a dozen.
All of it in the weeks before the company files to go public.
This is the point where most coverage supplies a motive. We won't, because nobody has given one, and the honest position is that we do not know. Anyone telling you otherwise is guessing in a confident voice.
What can be said is what departures like these usually cost. A company heading for an IPO needs two things in the room: continuity, and someone who can explain the business to a sceptical investor from memory. Senior exits take a piece of both, and they take it at the worst possible moment — right when every claim is about to be written down in a document with legal consequences.
And this is a wave, not an event.
Earlier this year, CNN reported that departing AI researchers were sounding an alarm on their way out the door. Some said so publicly. Most said nothing at all. Silence proves nothing — people leave good jobs for ordinary reasons all the time. But when the people closest to something stop discussing it in public, that is usually the moment to start paying attention.
Anyone who will read that filing next month. And anyone weighing an offer from a lab right now.
Whether the filing names these departures directly. On this, a company does not get to choose.
Every company going public must publish a section called "risk factors" — a list of everything that could go wrong, written by the company itself. It is the only place in corporate life where the pessimistic version is legally required. When OpenAI's filing appears, read that section first. The people who just left will already be in it.
Sources: Jingletree executive tracker; CNN Business, February 2026; TechCrunch.