Koppers Hldgs (NYSE:KOP) reported quarterly earnings of $1.37 per share which beat the analyst consensus estimate of $1.12 by 22.32 percent. This is a 7.43 percent decrease over earnings of $1.48 per share from the same period last year. The company reported quarterly sales of $521.100 million which beat the analyst consensus estimate of $506.100 million by 2.96 percent. This is a 3.23 percent increase over sales of $504.800 million the same period last year.