Former FTX US President Brett Harrison resigned last September, in part due to “long-standing disagreements” with members of the SBF and its inner circle, Brett Harrison expressed serious concerns about the way FTX US was run, including “a lack of proper delegation of authority, formal management structure and key employees”. When he allegedly raised these concerns with SBF and former engineering director Nishad Singh, his bonus was “significantly reduced”, and company lawyers directed him to apologize to Bankman-Fried, which he declined.