
OpenAI wraps $6.6 billion share sale at $500 billion valuation
Sam Altman, chief executive officer of OpenAI Inc., during a media tour of the Stargate AI data center in Abilene, Texas, US, on Tuesday, Sept. 23, 2025. Kyle Grillot | Bloomberg | Getty Images OpenAI has finalized a secondary share sale totaling $6.6 billion, allowing current and former employees to sell stock at a record…