Any insurer which is subject to registration under this section shall register within fifteen (15) days after it becomes subject to registration, and annually thereafter by May 1 of each year for the previous calendar year, unless the Commissioner for good cause shown extends the time for registration, and then within the extended time. The Commissioner may require any insurer authorized to do business in the state which is a member of an insurance holding company system, and which is not subject to registration under this section, to furnish a copy of the registration statement, the summary specified in subsection C of this section or other information filed by the insurance company with the insurance regulatory authority of its domiciliary jurisdiction.
Okla. Stat. tit. 36, § 1635