Wash. Rev. Code § 23B.11A.045
(1) Unless the articles of incorporation provide otherwise, approval by a corporation's shareholders of a plan of merger or share exchange is not required if:
(2) As used in this section:
(d) Shares tendered in response to the offer will be deemed to have been "purchased" in accordance with the offer at the earliest time as of which:
(ii) Either:
[ 2024 c 22 s 6.]