X0306 4 2018-12-21 0 0001734342 Mercantil Bank Holding Corp AMTB 0001746911 Gonzalez S Alejandro 220 ALHAMBRA CIRCLE CORAL GABLES FL 33134 1 0 0 0 Class A Common Stock 2018-12-19 5 G 0 E 68640 0.00 A 68966.33 I By spouse Class B Common Stock 2018-12-19 5 G 0 E 13910 0.00 A 14053.66 I By spouse Class A Common Stock 2018-12-21 4 A 0 9615 0.00 A 220441 D Class B Common Stock 13239.66 D Effective October 23, 2018, the Issuer split its outstanding Class A and Class B common stock on a one-for-three basis (the "stock split"). As a result of the stock split, every three outstanding shares of the Issuer's Class A common stock were combined into only one share of the Issuer's Class A common stock and every three outstanding shares of the Issuer's Class B common stock were combined into only one share of the Issuer's Class B common stock. Fractional shares were issued. The amount of securities reported on this Form 4 have been adjusted to reflect the stock split. All future Form 4 and Form 5 filings will reflect the stock split. /s/ Julio V. Pena, as Attorney-in-Fact for Alejandro Gonzalez S. 2018-12-27