Republican lawmakers scrutinise Sam Altman's business ties ahead of OpenAI IPO

House Republicans have requested records detailing financial links between OpenAI and outside ventures in which chief executive Sam Altman has personally invested, the Wall Street Journal reported. The letter asks for procurement, partnership and investment information that could overlap with Altman's decisions at OpenAI.

The inquiry lands just before OpenAI's expected initial public offering, which sources have valued in excess of $500 billion. The listing is being prepared at a moment when investors are also focused on SoftBank's growing OpenAI-related debt exposure.

Altman's private venture portfolio has long drawn scrutiny. Critics say funds under his control investing in OpenAI's suppliers or customers create potential conflicts of interest. OpenAI representatives did not respond to a request for comment; Altman has previously argued that his personal stakes have benefited the company.