Pentagon AI Chief Divested Millions in Perplexity and xAI Stock

Emil Michael, the Undersecretary of Defense for Research and Engineering, has divested millions of dollars in holdings from two prominent AI startups. The sales, revealed through recent financial filings, highlight the deep financial ties between high-level national security officials and the commercial AI sector.

According to financial disclosures, Michael sold his holdings in Perplexity AI in June 2026, with the sale estimated to be worth between $5 million and $25 million. This follows a previous divestment in January 2026, when Michael sold stock in xAI, reportedly netting profits of up to $24 million. These transactions represent a significant liquidation of private assets in the very technologies the U.S. government is currently working to integrate into its defense infrastructure.

The Intersection of Defense and Silicon Valley

Michael occupies a critical position within the Pentagon, overseeing research and engineering at a time when the Department of Defense is aggressively pursuing AI capabilities to maintain a strategic edge. His previous investments in high-growth firms like Perplexity and xAI place him at the center of the rapidly evolving relationship between the public sector and private AI labs. As the government seeks to establish standards for AI safety and procurement, the personal portfolios of those directing these policies have become a focal point for transparency advocates.

Implications for AI Procurement

The scale and timing of these sales raise critical questions regarding potential conflicts of interest and the "revolving door" between Silicon Valley and the Pentagon. Because the Undersecretary's office influences how the government selects vendors and allocates funding for AI research, financial ties to specific commercial entities can create the appearance of bias. The divestments are an attempt to mitigate these conflicts, but they also underscore how closely the leadership of the U.S. military is entwined with the financial success of private AI enterprises.

Future Oversight

As the Pentagon continues to shape AI policy and procurement, the scrutiny of leadership financial disclosures is expected to increase. While the sales of Perplexity and xAI stock address immediate holdings, the broader trend of AI executives moving into government roles—and vice versa—remains a point of contention. It remains to be seen if current disclosure requirements are sufficient to manage the influence of private equity in national security decision-making.