Exhibit 32

CERTIFICATION OF 

CHIEF EXECUTIVE OFFICER, PRINCIPAL FINANCIAL OFFICER AND PRINCIPAL ACCOUNTING OFFICER UNDER SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 

This certification is given by the undersigned Chief Executive Officer, Principal Financial Officer and Principal Accounting Officer of Umpqua Holdings Corporation (the “registrant”) pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.  Each of the undersigned hereby certifies, with respect to the registrant’s quarterly report on Form 10-Q for the period ended March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), 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 result of operations of the registrant. 

/s/ Cort L. O'Haver

Cort L. O'Haver

President and Chief Executive Officer

Umpqua Holdings Corporation

/s/ Ronald L. Farnsworth

Ronald L. Farnsworth

Executive Vice President/Chief Financial Officer and

Principal Financial Officer

Umpqua Holdings Corporation

/s/ Neal T. McLaughlin

Neal T. McLaughlin

Executive Vice President/Treasurer and

Principal Accounting Officer

Umpqua Holdings Corporation

May 4, 2018