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We consent to the incorporation by reference in Registration Statement No. 333-192346 on Form S-4 as amended by Post-Effective Amendment No. 1 on Form S-8, Registration Statement No. 333-195396 on Form S-3ASR, and in Registration Statement Nos. 333-211381, 333-188291, 333-144766, 333-143347, 333-135071, 333-117680, 333-117679, 333-105637, 333-101357, 333-58978, and 333-77259 on Form S-8 of our report dated February 25, 2021, relating to the financial statements of Umpqua Holdings Corporation, and the effectiveness of Umpqua Holdings Corporation’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Umpqua Holdings Corporation for the year ended December 31, 2020.