W. Va. Code § 33-40-10
(a) Any foreign insurer shall, upon the written request of the commissioner, submit to the commissioner an RBC report as of the end of the calendar year just ended the later of:
(2) Fifteen days after the request is received by the foreign insurer.
Any foreign insurer shall, at the written request of the commissioner, promptly submit to the commissioner a copy of any RBC plan that is filed with the Insurance Commissioner of any other state.