OpenAI’s executive ranks are thinning at a critical moment. Chief revenue officer Denise Dresser announced her sudden departure on Thursday, just two days after operating chief Brad Lightcap said he was leaving the ChatGPT maker after eight years to “start something new.” Their exits, along with earlier departures, have left the company’s C-suite in flux as OpenAI works to justify its $852 billion valuation and prepare for a widely anticipated initial public offering.
The shake-up is “a huge red flag” ahead of an IPO, according to Kevin McCormick, founder of AI startup SignAudit.AI, who posted on X on Thursday that Dresser likely walked away from a sizable pay package by leaving after less than a year. “If the executives leaving aren’t being ‘made whole’ by the next company, it’s bad news for OpenAI,” he wrote.
Dresser joined OpenAI in December from Slack, where she had built a strong enterprise reputation after more than a decade in senior roles at Salesforce. She was brought in to grow OpenAI’s enterprise unit, a high-margin business that competes directly with Anthropic. In April, she told CNBC that enterprise made up 40% of the company’s revenue and was “on track to reach parity with consumer by the end of 2026.” Days before that interview, she had taken on many of Lightcap’s responsibilities, raising her profile further.
Her successor is Dali Rajic, the former COO of cybersecurity firm Wiz, which Google acquired for $32 billion earlier this year. OpenAI president Greg Brockman said in a statement that Dresser led the revenue group through a “formative period for the business,” and that Rajic “will turn what we’ve learned into repeatable execution as we build out the full system to make AI broadly useful for people and businesses.” Rajic was introduced to OpenAI through Thrive founder Josh Kushner, according to a person with knowledge of the matter, and Thrive has been one of OpenAI’s most prominent backers.
Dresser and Lightcap are the latest in a string of high-profile exits. Fidji Simo, who joined OpenAI last year from Instacart, said in July she was stepping away to focus on recovery from a “severe exacerbation of a chronic illness.” In April, vice president of science Kevin Weil and marketing chief Kate Rouch also left—Rouch to focus on cancer recovery.
OpenAI’s financial backers were caught off guard by Dresser’s departure, according to two current investors who asked not to be named. They attributed the churn to OpenAI’s fast-moving culture, which two former employees described as a “hire fast, fire fast” environment and a pressure cooker.
The instability is not new for CEO Sam Altman. In 2023, the board briefly ousted him for allegedly being “not consistently candid in his communications,” only to restore him days later amid investor panic and employee threats to leave. That episode resurfaced during the Musk v. Altman trial in May, when Musk’s lawyers used Altman’s firing to question his trustworthiness. Altman testified, “I was not trying to deceive the board.” An advisory jury ultimately ruled that Musk waited too long to bring his suit, though he vowed to appeal.
Despite the turmoil, OpenAI is emphasizing momentum with corporate clients. On Thursday, the company said the enterprise business grew to 2 million customers, doubling from a year prior. Brockman told employees in an internal Slack message shared with CNBC that run rate revenue rose more than 20% month over month in July, including 32% growth for business customers.
CFO Sarah Friar plans to hold a meeting with investors on Friday, where she is expected to address the C-suite shake-up, according to a source familiar with the matter. Brockman will also attend to discuss strategy. The meeting had been previously planned, but the departures will likely dominate the conversation.
Altman’s public reaction to Dresser’s exit was notably muted. He did not post a farewell on X, as he had for Lightcap. Instead, his only post on Thursday was a one-word reply—”/ultrafast”—to an announcement about a preview of the new GPT-5.6 model in “Ultrafast mode.”
Source: www.cnbc.com — https://www.cnbc.com/2026/08/14/open-ai-ipo-red-flag.html
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