The former FTX US president resigned in September last year in part due to "long-standing differences" with SBF and others.

According to Foresight News, according to the FTX report, former FTX US President Brett Harrison resigned in September last year, partly due to "long-standing differences" with SBF and members of his core circle. Brett Harrison expressed serious concerns about the way FTX US operated, including "lack of proper authorization, formal management structure and key employees."

When he raised these concerns with SBF and former engineering director Nishad Singh, his bonus was allegedly "substantially reduced" and company lawyers instructed him to apologize to Bankman-Fried, which he refused.