At a Glance

  • Anthony Armstrong, the chief financial officer of Elon Musk's AI platform xAI, has left the company, becoming part of a wave of senior management departures, according to The Information, citing sources familiar with the matter.
  • Armstrong, a longtime advisor to Musk, previously worked at Morgan Stanley. He took over as the AI platform's finance chief last October—after xAI, the maker of the chatbot Grok, acquired Musk's social media platform X in an all-stock deal last March, CFO Dive reported at the time. According to a February 2 press release, Armstrong's departure comes about two months after SpaceX, another Musk company, acquired xAI, a merger that combined three entities into a company valued at $1.25 trillion.
  • SpaceX, the manufacturer of Starlink satellites and other space exploration technologies including rockets, is also preparing for an initial public offering, with the company having confidentially filed a draft IPO registration with the U.S. Securities and Exchange Commission last week, according to Bloomberg.

Deep Analysis

Armstrong's appointment as CFO "doesn't look like a traditional standalone CFO hire, but rather a strategic move by Musk to place a trusted capital markets operator in charge of closely linked entities," Shawn Cole, president of boutique executive search firm Cowen Partners, told CFO Dive in an email.

Cole told CFO Dive when Armstrong was hired that Armstrong brought his investment banking expertise to the CFO role—and noted that choosing the Morgan Stanley alum also fits "Musk's usual pattern of elevating trusted dealmakers from his network to key operational positions."

In 2025, Armstrong served as Morgan Stanley's global head of technology M&A, during which time he assisted Musk in acquiring Twitter (now X) in 2022 and served as a senior advisor at the Office of Personnel Management while Musk led the Department of Government Efficiency.

His departure, reported just months after the xAI-SpaceX merger, "may indicate that the role is shifting from a capital markets and fundraising focus to a divisional CFO role more centered on financial reporting, operational discipline, and IPO preparation," Cole said in an email. "Once the initial capital formation and integration work progresses further, the company may need a different type of financial leader with stronger public company credibility, SEC compliance discipline, investor relations experience, and institutional-grade reporting capabilities."

Cole noted that such a move is not unconventional from a hiring perspective, as investment banking expertise is most valuable when raising capital or structuring deals.

"But as companies mature or approach an IPO, they often turn to CFOs who can combine capital markets skills with public company controls and financial infrastructure," Cole said. "In that sense, Armstrong may have been more of a transitional hire from the start, rather than a long-term finance operator."

xAI did not respond to requests to confirm Armstrong's departure or whether a successor has been named.

With the confidential filing, SpaceX is expected to go public in June, potentially valuing the company at a record approximately $1.7 trillion, according to Bloomberg on April 1.

Bloomberg reported that SpaceX's potential listing could raise up to $75 billion, surpassing the record $29 billion raised by Saudi Aramco's 2019 IPO. Citing sources familiar with the matter, Bloomberg reported that the company has told potential investors it expects SpaceX executives to hold briefings in April this year.

As SpaceX continues to prepare for its IPO, Armstrong's departure also coincides with its subsidiary xAI recently filing a lawsuit against Colorado Attorney General Philip J. Weiser over a law passed in the state in 2024. The law aims to provide consumer protections for AI systems, including plans to prevent "algorithmic discrimination" by such systems.

The law—the Colorado Artificial Intelligence Act or Senate Bill 24-205 ("SB24-205")—has faced criticism from the tech industry and AI enthusiasts since it was first introduced two years ago, prompting the state to delay its implementation by six months to June 30, CFO Dive previously reported.

According to a bill summary, the CAIA requires developers of "high-risk" AI systems to "take reasonable care to protect consumers from any known or reasonably foreseeable risks of algorithmic discrimination in high-risk systems."

xAI's civil lawsuit, filed Thursday in the U.S. District Court for the District of Colorado, alleges the regulation "significantly hinders the development and use of AI" and impedes free speech, according to the complaint.