Oregon Revised Statutes Financial Institutions § 711.085

(1) A simple majority of the full board of directors of the converting Oregon bank, unless the articles or bylaws of the converting Oregon bank required a greater percentage; and

(2) If the converting bank is an Oregon stock bank, a vote of a simple majority of the outstanding stock of each class of voting shares at a meeting called to consider the conversion, unless the articles or bylaws of the converting Oregon bank required a greater percentage.