Okla. Stat. tit. 18 § 484
Every such corporation shall, in the months of January, April, July and October of each year, file with the Insurance Commissioner of the state a statement signed and sworn to by its president and secretary, showing its assets and liabilities as required by Section 1345. And the Insurance Commissioner shall have the power, and it shall be his duty, to revoke the authority of any such company to transact any business under this article whenever, in his judgment, said company is not solvent, or is conducting its business in violation of this article. He may institute inquiry, at any time, into the solvency of such company, and may require that additional security be given, at any time, upon any obligation to the state when he deems such company no longer sufficient security.
Okla. Stat. tit. 18, § 484