1. Basis of Presentation

The accompanying unaudited condensed consolidated financial statements and related disclosures have been prepared in accordance with accounting principles generally accepted in the United States applicable to interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of Koppers Holdings Inc.'s and its subsidiaries' ("Koppers", "Koppers Holdings" or the "Company") financial position and interim results as of and for the periods presented have been included. All such adjustments are of a normal recurring nature unless disclosed otherwise. Because the Company's business is seasonal, results for interim periods are not necessarily indicative of those that may be expected for a full year. The Condensed Consolidated Balance Sheet for December 31, 2010 has been summarized from the audited balance sheet contained in the Annual Report on Form 10-K for the year ended December 31, 2010.

The financial information included herein should be read in conjunction with the Company's audited consolidated financial statements and related notes included in its Annual Report on Form 10-K for the year ended December 31, 2010.

2. Dividends

On May 4, 2011, the Company's board of directors declared a quarterly dividend of 22 cents per common share, payable on July 6, 2011 to shareholders of record as of May 16, 2011.

3. Business Acquisitions

Koppers Netherlands – On March 1, 2010, the Company acquired 100 percent of the outstanding shares of privately-owned Cindu Chemicals B.V. ("Cindu") for cash of $21.6 million. Cindu was subsequently renamed Koppers Netherlands B.V. ("Koppers Netherlands"). Koppers Netherlands is a Dutch company which operates a 140,000 metric ton coal tar distillation plant in Uithoorn, Netherlands. The acquisition strengthens the Company's presence in Europe and increases the Company's ability to service its export markets.

Acquisition expenses were $1.6 million for the three months ended March 31, 2010 and are charged to selling, general and administrative expenses.

Portec – On December 22, 2010, the Company acquired the rail joint bar business of Portec Rail Products, Inc. located in Huntington, West Virginia. The purchase price was cash of $10.7. The updated allocation of purchase price to acquired assets consisted of inventory totaling $7.1 million, plant and equipment totaling $2.7 million, intangible assets consisting primarily of customer relationships totaling $0.6 million and tax deductible goodwill of $0.3 million. The goodwill is allocated to the Railroad and Utility Products segment.

Other acquisitions – On October 31, 2010, the Company acquired the midwestern United States refined tar business of Stella Jones Inc. for cash of $5.8 million. The final allocation of purchase price to acquired assets consisted of inventory totaling $1.6 million and intangible assets consisting primarily of customer relationships totaling $1.7 million and tax deductible goodwill of $2.5 million. The goodwill is allocated to the Carbon Materials and Chemicals segment.

Pro-forma information – The consolidated pro forma results of operations if the above acquisitions had been completed as of the beginning of the year in 2010 would have been pro forma revenue of $288.1 million and operating profit of $15.9 million for the three months ended March 31, 2010.

4. Fair Value Measurements

Carrying amounts and the related estimated fair values of the Company's financial instruments as of March 31, 2011 and December 31, 2010 are as follows:

Cash and cash equivalents – The carrying amount approximates fair value because of the short maturity of those instruments.

Investments and other assets – Represents the broker-quoted cash surrender value on universal life insurance policies. This asset is classified as Level 2 in the valuation hierarchy and is measured from values received from financial institutions.

Debt – The fair value of the Company's long-term debt is estimated based on the market prices for the same or similar issues or on the current rates offered to the Company for debt of the same remaining maturities (Level 2). The fair values of the revolving credit facility approximate carrying value due to the variable rate nature of these instruments.

5. Comprehensive Income and Equity

Total comprehensive income for the three months ended March 31, 2011 and 2010 is summarized in the table below:

The following tables present the change in equity for the three months ended March 31, 2011 and 2010, respectively:

7. Stock-based Compensation

The amended and restated 2005 Long-Term Incentive Plan (the "LTIP") provides for the grant to eligible persons of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance awards, dividend equivalents and other stock-based awards, which are collectively referred to as the awards.

Under the LTIP, the board of directors granted restricted stock units and performance stock units to certain employee participants (collectively, the "stock units") each year starting in 2007. The restricted stock units vest on the third anniversary of the grant date, assuming continued employment by the participant. Performance stock units granted in 2011 and 2010 each have a two-year performance objective. Performance stock units granted before 2010 have three-year performance objectives. Regardless of whether the measurement period for the applicable performance objective is two or three years, all performance stock units have a three-year period for vesting (if the applicable performance objective is obtained). The applicable performance objective is based upon a multi-year cumulative value creation calculation commencing on the first day of each grant year. The number of performance stock units granted represents the target award and participants have the ability to earn between zero and 150 percent of the target award based upon actual performance. If minimum performance criteria are not achieved, no performance stock units will vest. The performance stock units originally awarded in 2008 did not vest in 2011 as the related performance objectives were not achieved.

Dividends declared on the Company's common stock during the restriction period of the stock units are credited at equivalent value as additional stock units and become payable as additional common shares upon vesting. In the event of termination of employment, other than retirement, death or disability, any nonvested stock units are forfeited, including additional stock units credited from dividends. In the event of termination of employment due to retirement, death or disability, pro-rata vesting of the stock units over the service period will result. There are special vesting provisions for the stock units related to a change in control.

Restricted stock units that vest immediately or have one-year vesting periods are also issued under the LTIP to members of the board of directors in connection with annual director compensation and, from time to time, are issued to members of management in connection with employee compensation.

Compensation expense for nonvested stock units is recorded over the vesting period based on the fair value at the date of grant. The fair value of stock units is the market price of the underlying common stock on the date of grant.

The following table shows a summary of the performance stock units outstanding as of March 31, 2011:

The following table shows a summary of the status and activity of nonvested stock awards for the three months ended March 31, 2011:

Stock options to executive officers vest and become exercisable upon the completion of a three-year service period commencing on the grant date. The stock options have a term of 10 years. In the event of termination of employment, other than retirement, death or disability, any nonvested options are forfeited. In the event of termination of employment due to retirement, death or disability, pro-rata vesting of the options over the service period will result. There are special vesting provisions for the stock options related to a change in control.

In accordance with accounting standards, compensation expense for unvested stock options is recorded over the vesting period based on the fair value at the date of grant. The fair value of stock options on the date of grant is calculated using the Black-Scholes-Merton model and the assumptions listed below:

The dividend yield is based on the Company's current and prospective dividend rate which calculates a continuous dividend yield based upon the market price of the underlying common stock. The expected life in years is based on the simplified method permitted under Securities and Exchange Commission Staff Accounting Bulletin No. 107 which calculates the average of the weighted vesting term and the contractual term of the option. This method was selected due to the lack of historical exercise data with respect to the Company. Expected volatility is based on the historical volatility of the Company's common stock and the historical volatility of certain other similar public companies' stock. The risk-free interest rate is based on U.S. Treasury bill rates for the expected life of the option.

The following table shows a summary of the status and activity of stock options for the three months ended March 31, 2011:

Total stock-based compensation expense recognized for the three months ended March 31, 2011 and 2010 is as follows: