OpenAI files confidential S-1, IPO date undecided OpenAI officially announced that it has submitted a confidential S-1 filing to the U.S. Securities and Exchange Commission (SEC) in preparation for going public. OpenAI stated that the IPO date has not yet been determined, as certain matters are easier to advance as a private company; however, this move keeps the option for an early IPO open. OpenAI also mentioned that the documents are expected to leak, so they proactively made the announcement.