Sacks Steps In As American Bitcoin's New Interim CFO Amid Prusak Departure

Matthew Prusak is leaving American Bitcoin as President and Interim CFO, effective August 4, 2026. He's stepping down to pursue a role in Austin, Texas.

Prusak's departure comes as the company reports a narrower quarterly loss and expands its bitcoin holdings. The leadership change has seen Paul Sacks appointed as interim CFO. Sacks will take on the finance role while continuing as head of derivatives, a position he's held since May.

The appointment gives an executive with derivatives experience responsibility for American Bitcoin's finances. This is significant as the company uses hedging instruments and manages a growing bitcoin balance sheet.