OpenAI filed a confidential initial public offering prospectus with the U.S. Securities and Exchange Commission in June 2026

From the articleOpenAI lowers valuation target, raises up to $30 billionAlso in OpenAI working on new $30B raise at $1.25T valuation ahead of IPO, Report: OpenAI closing on $30B ‘bridge’ funding round to tide it over before IPO, OpenAI nears up to $30 billion funding round at $1.25 trillion valuation led by UAE investors