Wash. Rev. Code § 23B.12.010
Sale of property and assets in usual and regular course of business or for benefit of creditors
(1) Unless the articles of incorporation provide otherwise, approval by a corporation's shareholders is not required:(a) To sell, lease, exchange, or otherwise dispose of any or all of the corporation's property and assets in the usual and regular course of its business; or(b) To mortgage, pledge, dedicate to the repay…