Riot said on Wednesday it had privately urged Bitfarms to remove its chairman and interim CEO, Nicolas Bonta, and add at least two new independent directors to its board. The dispute stems from an unsolicited offer Riot made in April to acquire Bitfarms for about $950 million. Bitfarms rebuffed the offer, saying it significantly undervalued the company, and approved a poison pill plan to prevent any attempts of a hostile takeover.