Attached files

file filename
EX-21 - LIST OF SUBSIDIARIES OF THE COMPANY - Koppers Holdings Inc.d272249dex21.htm
EX-31.1 - SECTION 302 CEO CERTIFICATION - Koppers Holdings Inc.d272249dex311.htm
EX-31.2 - SECTION 302 CFO CERTIFICATION - Koppers Holdings Inc.d272249dex312.htm
EX-12.1 - COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES - Koppers Holdings Inc.d272249dex121.htm
EX-23.1 - CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - Koppers Holdings Inc.d272249dex231.htm
EX-10.64 - NOTICE OF GRANT OF STOCK OPTION - Koppers Holdings Inc.d272249dex1064.htm
EX-10.63 - RESTRICTED STOCK UNIT ISSUANCE AGREEMENT - PERFORMANCE VESTING - Koppers Holdings Inc.d272249dex1063.htm
EX-10.62 - RESTRICTED STOCK UNIT ISSUANCE AGREEMENT - TIME VESTING - Koppers Holdings Inc.d272249dex1062.htm
EX-10.69 - SECOND AMENDMENT TO THE CREDIT AGREEMENT - Koppers Holdings Inc.d272249dex1069.htm
10-K - FORM 10-K - Koppers Holdings Inc.d272249d10k.htm

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Koppers Holdings Inc. (the “Company”) on Form 10-K for the year ended December 31, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies in his capacity as an officer of Koppers Holdings Inc., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

 

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

 

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

 

/s/ WALTER W. TURNER    /s/ LEROY M. BALL
Walter W. Turner    Leroy M. Ball
Chief Executive Officer    Chief Financial Officer
February 27, 2012    February 27, 2012