PITTSBURGH, PA -- (Marketwire) -- 02/06/13 -- The Board of Directors of Koppers Holdings Inc. (NYSE: KOP) today declared a quarterly dividend of $0.25 per common share, payable April 8, 2013, to shareholders of record as of the close of business on February 19, 2013. The quarterly dividend amount of $0.25 represents a four percent increase over the previous quarterly dividend rate of $0.24 per share.

Koppers has also established a record date for its 2013 annual meeting of shareholders. Koppers shareholders of record at the close of business on March 12, 2013 will be entitled to notice of the annual meeting and to vote upon matters considered at the meeting. The annual meeting will be held in Pittsburgh, Pennsylvania on May 2, 2013.

Koppers will send a definitive proxy statement to shareholders of record, which will contain important information about the meeting and the matters to be considered. Shareholders are urged to read the proxy statement when it becomes available.

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, The Netherlands, Australia and China. The stock of Koppers Holdings Inc. is publicly traded on the New York Stock Exchange under the symbol "KOP." For more information, visit us on the Web: www.koppers.com. Questions concerning investor relations should be directed to Leroy M. Ball at 412 227 2118 or Michael W. Snyder at 412 227 2131.

Safe Harbor Statement

This news release may contain forward-looking statements based on management's current expectations, estimates and projections. All statements that address expectations or projections about the future, including statements about the company's strategy for growth, product development, market position, expected expenditures and financial results are forward-looking statements. Some of the forward-looking statements may be identified by words like "expects," "anticipates," "plans," "intends," "projects," "indicates," and similar expressions. These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions. Many factors, including those discussed more fully elsewhere in this release and in documents filed with the Securities and Exchange Commission by Koppers, particularly its latest annual report on Form 10-K and quarterly report on Form 10-Q, as well as others, could cause results to differ materially from those stated. These factors include, but are not limited to, changes in the laws, regulations, policies and economic conditions, including inflation, interest and foreign currency exchange rates, of countries in which the Company does business; competitive pressures; the loss of one or more key customer or supplier relationships; customer insolvencies; successful integration of structural changes, including restructuring plans, acquisitions, divestitures and alliances; cost and availability of raw materials; and other economic, business, competitive, regulatory and/or operational factors affecting the business of Koppers generally.