Attached files

file filename
10-K/A - FORM 10-K AMENDMENT NO. 1 - COLUMBIA BANKING SYSTEM, INC.d250751d10ka.htm
EX-31.1 - SECTION 302 CEO CERTIFICATION - COLUMBIA BANKING SYSTEM, INC.d250751dex311.htm
EX-31.2 - SECTION 302 CFO CERTIFICATION - COLUMBIA BANKING SYSTEM, INC.d250751dex312.htm

Exhibit 32

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 Amendment No. 1 to the Annual Report of Columbia Banking System, Inc. (the “Company”) on Form 10-K/A for the period ended December 31, 2010 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Melanie J. Dressel, President and Chief Executive Officer, and Gary R. Schminkey, Executive Vice President and Chief Financial Officer, certify, 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; and

 

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

 

Dated: October 31, 2011

/S/    MELANIE J. DRESSEL

Melanie J. Dressel
President and Chief Executive Officer

/S/    GARY R. SCHMINKEY

Gary R. Schminkey

Executive Vice President and

Chief Financial Officer