xAI CFO Anthony Armstrong Steps Down Amid Leadership Churn - BW CFO World

Exit adds to executive turnover as firm navigates cash burn and growth challenges

Anthony Armstrong, the chief financial officer of Elon Musk's artificial intelligence venture xAI, has left the company, according to reports citing people familiar with the matter. His exit is part of a larger trend of high-profile exits at the startup, with multiple top executives and technical leaders leaving the company over the past few months.

Armstrong became the CFO of xAI in October 2025, having been a senior banker at Morgan Stanley and an adviser to Musk when buying the social media platform X. He was managing the financial activities of both xAI and X, and was instrumental in attempting to stabilise the financial structure of the combined entity and dealing with the high cash burn of a fast-growing AI business.

xAI has not announced why Armstrong left the company and the company did not respond to media inquiries on his departure immediately. His departure from the position coincides with the company experiencing stiff competition in the AI industry and being pressured to prove its high valuation and continue spending heavily on projects like Grok.

The most recent departure is part of the turnover in leadership at xAI, which has already lost its previous CFO Mike Liberatore and some of its co-founders, highlighting the volatility within the AI company in its quest to grow and attract new funding.