KapStone Paper and Packaging Joins S&P SmallCap 600 Index

November 8, 2010

NORTHBROOK, Ill – November 8, 2010 – KapStone Paper and Packaging Corporation (NYSE: KS) (KapStone), a leading North American producer of unbleached kraft paper products and linerboard, today reported that Standard & Poor’s (S&P) will add the Company to the S&P SmallCap 600 Index at the close of trading on November 10, 2010.

I am very pleased that KapStone has been added to this S&P Index.  This is additional positive confirmation of the strong and relevant company that KapStone has become by generating robust cash flows and delivering shareholder value, said Roger W. Stone, Chairman and Chief Executive Officer.

Introduced in 1994, the S&P SmallCap 600 Index includes publicly traded companies with a market cap between $250 million and $1.2 billion which meet specific Standard & Poor’s criteria of financial viability and investment potential.  KapStone has been added to the S&P SmallCap 600 GICS Paper Products Sub-Industry index.

About the Company

Headquartered in Northbrook, IL, KapStone Paper and Packaging Corporation is a leading North American producer of unbleached kraft paper products and linerboard.  The Company is the parent company of KapStone Kraft Paper Corporation which includes paper mills in Roanoke Rapids, NC and North Charleston, SC, a lumber mill in Summerville, SC, and five chipping mills in South Carolina.  The business employs approximately 1,600 people.