Wash. Rev. Code § 30B.53.090
(1) An acquiring person shall not acquire control of a state trust company until thirty days after filing with the director a written notice of and application for change of control containing the following information, plus any additional information that the director may prescribe as necessary or appropriate in the particular instance for the protection of shareholders, trustors, beneficiaries, and the public interest:
(a) The identity and trust and other business experience of each acquiring person by whom or on whose behalf acquisition is to be made, including the identity and experience of:
[ 2019 c 389 s 94.]