Mercantile Bank (NASDAQ:MBWM) reported quarterly earnings of $1.46 per share which beat the analyst consensus estimate of $1.31 by 11.45 percent. This is a 20.66 percent increase over earnings of $1.21 per share from the same period last year. The company reported quarterly sales of $67.589 million which missed the analyst consensus estimate of $67.632 million by 0.06 percent. This is a 18.06 percent increase over sales of $57.250 million the same period last year.