OpenAI has officially confirmed that it has confidentially submitted a Form S-1 registration statement to the US Securities and Exchange Commission (SEC), taking the first formal step towards a potential initial public offering (IPO). However, the company made it clear that it has not yet decided when, or even whether, it will list its shares on the stock market.
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“We recently submitted a confidential S-1. We expect it to leak so we’re just announcing it. We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company. But it’s a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best,” OpenAI said in a statement. The company added that the announcement is being made under Rule 135 of the Securities Act of 1933 and “does not constitute an offer to sell or the solicitation of an offer to buy any securities.”
What does this filing mean?
A confidential S-1 filing is the standard first step for companies preparing for an IPO in the United States. The document contains financial details, business strategy, risk factors and corporate governance information that investors eventually review before a listing. By filing confidentially, OpenAI can receive feedback from the SEC without immediately making sensitive financial information public. The company acknowledged that the filing could leak and therefore chose to announce it proactively.
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The filing does not mean an IPO is imminent. Instead, it provides OpenAI with the flexibility to move ahead quickly if market conditions or strategic priorities make a public listing attractive. The legal disclaimer included in the announcement is standard language required under SEC Rule 135, clarifying that the statement is informational and should not be treated as an invitation to invest.
How will it impact OpenAI users?
For millions of ChatGPT users and enterprise customers, there is unlikely to be any immediate change. The company’s products and services will continue to operate as usual, and the confidential filing has no direct impact on subscriptions, APIs or ongoing AI development. Over the longer term, a successful IPO could introduce new business pressures. As a publicly traded company, OpenAI would be accountable to shareholders and expected to deliver consistent financial performance. That could translate into a greater focus on revenue generation, premium features, enterprise offerings and commercial partnerships.
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At the same time, access to public capital markets would provide additional funding to expand infrastructure, develop advanced AI models and support global growth. For users, the near-term experience is expected to remain stable while any long-term changes would likely be introduced gradually.
Does Rule 135 affect any government stake negotiations?
OpenAI’s announcement has also triggered speculation about whether a potential IPO could influence discussions around government participation or policy proposals linked to AI development. In practice, Rule 135 has a very limited purpose. The provision simply allows companies to publish basic information about a planned registered securities offering without that communication being treated as an illegal offer under US securities law. It does not affect confidential negotiations involving governments, strategic investors or other stakeholders. If any material agreement involving a government equity stake or financial contribution were reached, it would simply need to be disclosed in the S-1 filing.
It’s also pertinent to note that OpenAI is not seeking any government bailout. Instead, it is preparing for what could become one of the largest technology IPOs in history while continuing broader discussions around AI governance and sharing the economic benefits of artificial intelligence.
OpenAI’s corporate structure remains unique
OpenAI today operates through a simplified but unusual governance model designed to balance its public mission with commercial growth.
The organisation has two principal entities:
- OpenAI Foundation, a nonprofit entity that ultimately controls governance.
- OpenAI Group PBC, a public benefit corporation that serves as the primary operating business.
The Foundation has the authority to appoint and remove the entire board of the operating company while also holding approximately 26% equity along with a performance-based warrant. Microsoft is estimated to own around 27%, with the remaining ownership spread across employees and investors. This structure was significantly simplified in October 2025, replacing a more complex network that included OpenAI LP, Global LLC, Holdings and other entities. The eventual public filing is expected to provide investors with a detailed view of OpenAI’s subsidiaries, ownership structure and capitalisation, offering the clearest picture yet of how one of the world’s most influential AI companies is organised.
While a public listing is far from certain, the confidential S-1 submission signals that OpenAI is preparing for multiple strategic possibilities. For now, the company remains focused on operating as a private organisation while ensuring it has the flexibility to tap public markets when the timing is right.
Which AI company’s employees could benefit the most from an IPO?
OpenAI’s move has also revived discussions around employee wealth creation across leading AI companies. Current estimates place the valuations of OpenAI, Anthropic and SpaceX in a similar range of approximately $800 billion to $965 billion, with Anthropic estimated at around $965 billion, OpenAI at roughly $852 billion, and SpaceX above $800 billion.
However, employee headcount tells a different story:
- Anthropic: Around 3,000 employees
- OpenAI: Around 4,500 employees
- SpaceX: More than 10,000 employees
Assuming similar equity pools, a smaller workforce generally means less dilution, increasing the potential value of employee equity on a per-person basis. That makes Anthropic employees theoretically the biggest beneficiaries of a future IPO.
OpenAI employees could also see significant gains depending on their role, tenure and stock grants. Early engineers and senior leaders could potentially hold equity worth millions or even tens of millions of dollars, although exact ownership percentages remain private. SpaceX employees have already benefited from multiple tender offers that provided liquidity before any public listing, reducing the urgency of an IPO-driven windfall.
