Mar 17, 2008. /Lesprom.com/. KapStone Paper and Packaging reported results for the 4Q and year ended December 31, 2007. 4Q 2007 net sales of $64.9 million were up $7.9 million, or 13.9%, and operating income of $13.5 million was up 34.6% over the same quarter last year. Full year 2007 net sales of $256.8 million were up $10.6 million, or 4.3%, and operating income of $44.3 million was up 30.5% over last year. Unbleached kraft paper net sales for the year ended December 31, 2007, rose to $227.9 million, up $13.7 million, or 6.4%, over the prior year. 4Q 2007 net sales of $64.9 million were up $7.9 million, or 13.9%, and operating income of $13.5 million was up 34.6% over the same quarter last year. Unbleached kraft paper net sales rose to $58.0 million, up $8.2 million, or 16.5%, over the prior year. Increased volume, up 7,780 tons, and higher average revenue per ton, up $40 per ton, drove the increase while a less favorable mix partially offset the volume and pricing gains. Roger Stone, KapStone's chairman and CEO, said, "We are particularly pleased with the operating results achieved in our inaugural year including an adjusted EBITDA margin of 22% and net income margin of 11%. We are entering 2008 in an even stronger position with an opportunity for continuing performance improvements, a 1Q price increase of $40 per ton on our kraft paper products, and a results-driven management team." KapStone Paper and Packaging Corporation, is a North American producer of kraft paper and converter of inflatable dunnage bags.