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Umpqua Holdings Corporation


Rigrodsky Law, P.A. is investigating Umpqua Holdings Corporation (“Umpqua”) regarding possible breaches of fiduciary duties and other violations of law related to Umpqua’s agreement to be acquired by Columbia Banking System, Inc. (“Columbia”). Under the terms of the agreement, Umpqua’s shareholders will receive 0.5968 shares of Columbia for each share of Umpqua they own.

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Signed pursuant to California Civil Code Section 1633.1, et seq. - and the Uniform Electronic Transactions Act as adopted by the various states and territories of the United States.

Date of signing: 12/03/2021

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