X0508 4 2025-12-19 0 0001734342 Amerant Bancorp Inc. AMTB 0001746256 Wilson Millar C/O AMERANT BANCORP INC. 220 ALHAMBRA CIRCLE CORAL GABLES FL 33134 1 0 0 0 0 Class A Common Stock 2025-12-19 4 G 0 4000 0 D 112249 D Class A Common Stock 2025-12-19 4 G 0 1000 0 A 2345 I Custodial Account for Grandchild 1 Class A Common Stock 2025-12-19 4 G 0 1000 0 A 2345 I Custodial Account for Grandchild 2 Class A Common Stock 2025-12-19 4 G 0 1000 0 A 2345 I Custodial Account for Grandchild 3 Class A Common Stock 2025-12-19 4 G 0 1000 0 A 2345 I Custodial Account for Grandchild 4 Bona fide gift to four custodial accounts for which reporting person is the custodian. The reporting person disclaims any pecuniary interest in the accounts' assets or the gifted shares. Bona fide gift to a custodial account for which reporting person is the custodian. The reporting person disclaims any pecuniary interest in the accounts' assets or the gifted shares. These shares are held in an account for one of the reporting person's minor grandchildren and the reporting person is the custodian of the account. The reporting person disclaims ownership of the shares held in the custodial account, and this report is not an admission that the reporting person is the beneficial owner of these shares for purposes of Section 16 or for any other purpose. /s/ Julio V. Pena as Attorney-in-Fact for Millar Wilson 2025-12-19