Mercantile Bank (NASDAQ:MBWM) reported quarterly earnings of $1.53 per share which beat the analyst consensus estimate of $1.32 by 15.91 percent. This is a 10.07 percent increase over earnings of $1.39 per share from the same period last year. The company reported quarterly sales of $68.756 million which missed the analyst consensus estimate of $68.807 million by 0.07 percent. This is a 12.83 percent increase over sales of $60.940 million the same period last year.