Argo Blockchain CEO steps down as miner accelerates AI shift

Nasdaq-listed Bitcoin miner Argo Blockchain (ARBK) said CEO Justin Nolan has stepped down as CEO and director under a separation agreement with Argo Operating US LLC, the company’s U.S. operating entity, according to a document filed with the U.S. SEC yesterday. Existing management will continue to run the company under board oversight until a successor is appointed, and Argo is prioritizing candidates with experience in AI and data centers as it expands beyond digital asset mining into AI and high-performance computing infrastructure.