X0508 4 2025-09-30 0000717806 FIRST US BANCSHARES, INC. FUSB 0001469094 McPhearson John Lee 3291 US HIGHWAY 280 BIRMINGHAM AL 35243 true false false false false Phantom Stock Units 2025-09-30 4 A false 71.28 12.02 A Common Stock 71.28 12377.19 D The units convert to common stock on a 1-for-1 basis. Shares attributable to quarterly dividends accrued under the First US Bancshares, Inc. Non-Employee Directors' Deferred Compensation Plan. The phantom stock units were accrued under the First US Bancshares, Inc. Non-Employee Directors' Deferred Compensation Plan and are to be settled in common stock at the end of the deferral period. /s/Beverly J. Dozier, by power of attorney 2025-10-01