Wash. Rev. Code § 23B.11A.060
(1)
(b) The articles of merger must state:
(2) After a plan of share exchange has been approved as required by this title, then articles of share exchange must be executed by the acquired entity and the acquiring entity. The articles of share exchange must state:
(c) A statement that the plan of share exchange was duly approved by the acquired entity by:
(5) With respect to a merger in which one or more other entities is a party, the merger will become effective at the later of:
[ 2024 c 22 s 8.]