Bitcoin miner Ionic Digital said in a statement on Thursday that former CEO Matt Prusak told the company in July that he would not stay on after his term ends on August 14. Ionic has started a search for a new CEO and appointed Chief Financial Officer John Penver as interim head. In addition, the miner said its former audit firm RSM has ended partnerships with all crypto clients, citing the accounting firm's strategic decision to end services to crypto-related companies. "The temporary absence of auditors has prevented the company from updating its SEC filings, which in turn has delayed Ionic Digital's efforts to become a public company," the company said.