X0306 4 2019-03-07 1 0001734342 Mercantil Bank Holding Corp AMTB 0001044282 Mercantil Servicios Financieros, C.A. AV. FCO. DE MIRANDA, LOS PALOS GRANDES, CC EL PARQUE, SUITES C-3-10 AND C-3-11 CARACAS X5 VENEZUELA 0 0 1 0 Class B Common Stock 2019-03-07 4 S 0 2112321 13.48 D 0 D Mercantil Bank Holding Corporation repurchased from Mercantil Servicios Financieros, C.A. 2,112,321 shares of Class B Common Stock of Mercantil Bank Holding Corporation on March 7, 2019 using the net proceeds from the exercise of the over-allotment option in connection with the public offering of Mercantil Bank Holding Corporation Class A Common Stock completed in December 2018 and certain private placements of Mercantil Bank Holding Corporation Class A Common Stock occurring in January and February 2019. Price reflects the weighted average purchase price for multiple transactions that ranged from $12.61 to $13.82 per share. The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price. /s/ Gustavo J. Vollmer A., Chairman and Chief Executive Officer 2019-03-07