X0508 4 2026-02-17 0 0001734342 Amerant Bancorp Inc. AMTB 0001839391 Fleitas Armando 220 ALHAMBRA CIRCLE CORAL GABLES FL 33134 0 1 0 0 EVP, Chief Accounting Officer 0 Class A Common Stock 2026-02-17 4 M 0 1667 0 A 9085.74 D Class A Common Stock 2026-02-17 4 F 0 495 22.73 D 8590.74 D Restricted Stock Units LTI 2023 0 2026-02-17 4 M 0 834 0 D Class A Common Stock 834 0 D Restricted Stock Units LTI 2024 0 2026-02-17 4 M 0 833 0 D Class A Common Stock 833 834 D Restricted Stock Units LTI 2026 0 2026-02-17 4 A 0 2500 0 A Class A Common Stock 2500 2500 D Each restricted stock unit ("RSU") is the economic equivalent of one share of Class A Common Stock. Includes 87.24 and 88.65 shares acquired under the Amerant Bancorp Inc. Employee Stock Purchase Plan on May 30, 2025 and November 28, 2025, respectively. Reflects the shares of Class A Common Stock that were surrendered in order to satisfy the reporting person's tax withholding obligation upon the vesting of RSUs. On February 16, 2023, Mr. Fleitas was awarded 2,500 RSUs, each representing the right to receive, following vesting, one share of Class A Common Stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Fleitas remains in the continuous service of the Company or a subsidiary through each such date. Since the anniversary of the date of grant was on Monday, February 16, 2026, a federal holiday, the vesting occurred on Tuesday, February 17, 2026, the next business day. On February 16, 2024, Mr. Fleitas was awarded 2,500 RSUs, each representing the right to receive, following vesting, one share of Class A Common Stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Fleitas remains in the continuous service of the Company or a subsidiary through each such date. Since the anniversary of the date of grant was on Monday, February 16, 2026, a federal holiday, the vesting occurred on Tuesday, February 17, 2026, the next business day. On February 17, 2026, Mr. Fleitas was awarded 2,500 RSUs, each representing the right to receive, following vesting, one share of Class A Common Stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Fleitas remains in the continuous service of the Company or a subsidiary through each such date. /s/ Julio V. Pena, as Attorney-in-Fact for Armando Fleitas 2026-02-19