Koppers Hldgs (NYSE:KOP) reported quarterly earnings of $1.37 per share which beat the analyst consensus estimate of $1.30 by 5.38 percent. The company reported quarterly sales of $554.300 million which missed the analyst consensus estimate of $577.800 million by 4.07 percent. This is a 0.71 percent increase over sales of $550.400 million the same period last year.