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Date Title   12/22/06 Koppers Declares End of North American Force Majeure for Coal Tar Products 12/11/06 Koppers Expands Presence in China 11/28/06 Koppers Announces Sale of Common Stock Owned by Saratoga Partners III, LP and Affiliated Companies 11/08/06 Koppers Announces Executive Appointments in Asia and Australia 11/06/06 Koppers Holdings Inc. Reports Third Quarter 2006 Results 11/03/06 Koppers Appoints James C. Stalder to its Board of Directors 11/02/06 Koppers Holdings Inc. Declares Quarterly Dividend of $0.17 per Share 10/31/06 Koppers Announces March 2007 Retirement of European Operations Executive 10/25/06 Koppers Plant Impacted by Pipeline Failure 10/23/06 Koppers Holdings Inc. Schedules Third Quarter 2006 Conference Call 10/23/06 Koppers Announces Executive Appointments 09/12/06 Koppers Holdings Inc. to Confirm Annual Earnings Guidance During Investor Meetings 09/05/06 Koppers Holdings Inc. Announces the Adoption of Stock Trading Plans 08/04/06 Koppers Holdings Inc. Reports Second Quarter 2006 Results 08/02/06 Koppers Holdings Inc. Schedules Second Quarter 2006 Conference Call 07/27/06 Koppers Holdings Inc. Declares Quarterly Dividend of $0.17 per Share 06/20/06 Koppers Renews Furnace Coke Sales Contract with Mittal Steel 05/23/06 Koppers Appoints T. Michael Young to its Board of Directors 05/12/06 Koppers Reports Favorable Verdict on Punitive Damages in Mississippi Civil Case 05/11/06 Koppers Holdings Inc. Reports First Quarter 2006 Results 05/11/06 Koppers to use recycled water at Continental Carbon Australia 05/08/06 Koppers Holdings Inc. Schedules First Quarter 2006 Conference Call 05/05/06 Koppers Reports Unfavorable Verdict in Mississippi Civil Case 05/03/06 Koppers Holdings Inc. Declares Quarterly Dividend of $0.17 per Share 04/28/06 Koppers Announces Purchase of Certain Assets of Reilly Coal Tar Business 04/19/06 Koppers Announces End of Production at Superior, Wisconsin Plant 04/11/06 Small Fire at Koppers Denver Plant is Extinguished Without Injuries 04/05/06 Koppers Highlights Safety, Health and Environmental Progress in Annual Responsibility Report 03/24/06 Koppers Locations Earn National Safety Council's Occupational Excellence Awards 03/09/06 Koppers Holdings Inc. Reports 2005 Year End Results 02/28/06 Koppers Holdings Inc. Schedules Year-End 2005 Conference Call 02/16/06 Koppers Develops Carbon Foam Product 02/15/06 Koppers Holdings Inc. Declares Initial Quarterly Dividend of $0.10 per Share 02/07/06 Koppers Holdings Inc. Announces Closing of Its Initial Public Offering 01/31/06 Koppers Holdings Inc. Announces Pricing of its Initial Public Offering