Koppers Holdings Inc.

Pittsburgh, Pennsylvania, USA, 09 February 2007 -- /PRNewswire/ -- Koppers Holdings Inc. (NYSE:KOP) intends to release its fourth quarter 2006 financial results before the opening of the markets on 15 February 2007, and to discuss its results on a conference call later that day at 11:00 a.m. EST.

Interested parties may access the live audio broadcast by dialing (888) 810-0248 in the United States and Canada, or +1 (706) 643 9697 for international, and entering conference ID number 8744138. Investors are requested to access the call at least five minutes before the scheduled start time to complete a brief registration. An audio replay will be available approximately two hours after the call's completion at (800) 642-1687 or +1 (706) 645-9291, Conference ID number 8744138. The recording will be available for replay through 01 March 2007.

The live broadcast of Koppers' conference call will be available online: http://phx.corporate-ir.net/phoenix.zhtml?p=irol- eventDetails&c=194019&eventID=1476574. (Due to the length of this URL, it may be necessary to copy and paste this hyperlink into your Internet browser's URL address field. Remove the space if one exists.)

If you are unable to participate during the live webcast, the call will be archived on the company's Web site at www.koppers.com, as well as www.streetevents.com and www.earnings.com, shortly after the live call and continuing through 01 March 2007.

About Koppers

Koppers, with corporate headquarters and a research center in Pittsburgh, Pennsylvania, is a global integrated producer of carbon compounds and treated wood products. Including its joint ventures, Koppers operates facilities in the United States, United Kingdom, Denmark, Australia, China, the Pacific Rim, and South Africa. The stock of Koppers Holdings Inc. is publicly traded on the New York Stock Exchange under the symbol "KOP." For more information, visit www.koppers.com. Questions concerning investor relations should be directed to Brian H. McCurrie at 412 227 2153 or Michael W. Snyder at 412 227 2131.

Source: Koppers Holdings, Inc.