OpenAI is contending with fresh governance questions ahead of a potential IPO after Chief Revenue Officer Denise Dresser abruptly announced her departure, two days after Brad Lightcap said he would end an eight-year tenure and after Fidji Simo had already exited. The company secretly filed IPO paperwork in June and is seeking to support an approximately $852 billion valuation, but has not set a listing date. Some investors said Dresser's exit came as a surprise, and SignAudit.AI founder Kevin McCormick called executive departures before an IPO a "major red flag." Even so, OpenAI says its enterprise business continues to grow, with President Greg Brockman saying July annualized revenue rose more than 20% from the prior month and enterprise customer revenue increased 32%. The company said its enterprise customer count has reached 2 million, double a year earlier, while CFO Sarah Friar and Brockman plan investor meetings to discuss strategy and the recent management changes. Investors are also watching competition from Google and Anthropic and the impact of cheaper open-source models on OpenAI's business model.