OpenAI Faces Data Privacy Lawsuit, State AG Scrutiny Over IPO Governance

OpenAI confronts a dual-front legal offensive as a California class action challenges the company’s data-sharing practices and top state regulators demand an SEC probe into executive conflicts of interest. The twin blows arrive as the artificial intelligence giant prepares for a potential public listing that analysts expect to rank among the largest in corporate history.

Plaintiffs filed a class action lawsuit on May 13, 2026, in the U.S. District Court for the Southern District of California. The suit, Couture v. OpenAI Global, LLC, alleged that ChatGPT shared sensitive user information with Google and Meta. The complaint identified chat query topics, user IDs, and email addresses as the specific data points funneled into the advertising pipelines of OpenAI’s competitors. Legal experts noted the suit relied on evidence of browser tab titles and tracking pixels that surfaced private user activity to third parties.

The litigation landed the same week that ten Republican attorneys general sent a formal letter to SEC Chairman Paul Atkins urging “stringent scrutiny” of OpenAI’s eventual IPO registration documents. Montana Attorney General Austin Knudsen led the coalition, which included officials from Alabama, Florida, Idaho, Iowa, Louisiana, Nebraska, Oklahoma, and West Virginia. The May 12 letter argued that Chief Executive Officer Sam Altman’s “history of self-dealing and serious conflicts of interest” created significant risks for future public investors.

The state regulators specifically highlighted undisclosed financial entanglements between Altman’s personal portfolio and entities doing business with OpenAI. Knudsen stated in the filing, “It is essential that investors receive clear notice of any conflicts of interest on the part of Altman or other senior OpenAI personnel. Only full transparency on these issues will enable investors, including our citizens and our respective States’ investment funds, to make informed decisions.”

The pressure from state capitals followed a separate investigation launched by the U.S. House Oversight Committee. Chairman James Comer sent Altman a formal inquiry on May 8 regarding a proposed $500 million investment in Helion Energy, a nuclear fusion startup. Altman personally invested $375 million in Helion in 2021. The committee sought to determine if OpenAI’s charitable roots and nonprofit capital were used to inflate the valuations of ventures linked to its own leadership. Comer demanded a briefing by May 22 and requested all documents since 2015 regarding conflict-of-interest policies.

OpenAI shifted aggressively toward a for-profit structure throughout 2025 as it sought the massive capital required for advanced model training. The company previously operated as a nonprofit dedicated to safe AI development. The lawsuits and regulatory letters suggested that the firm’s rapid transition into a commercial powerhouse created governance gaps. The AG letter emphasized that state pension funds and retail investors could inherit these hidden risks if the SEC did not enforce strict transparency during the IPO process.

Chain Street’s Take

Regulators are finally treating OpenAI like a trillion-dollar corporation rather than a laboratory experiment. The privacy lawsuit confirms that the “free” tier of ChatGPT likely relies on the same ad-tech data harvesting that users have come to expect from social media giants. For investors, the AG letter is the more significant warning. If state pension funds are going to buy OpenAI shares, they require a clear accounting of Sam Altman’s personal business deals. The era of “trust us, we’re building the future” is over, replaced by a demand for the same disclosure standards that govern every other public company on Wall Street.