Okla. Stat. tit. 18, § 381.10
No association or foreign association shall transact business or operate in this state without a certificate of authority issued by the State Banking Commissioner.
Laws 1970, HB 1543, c. 101, § 10, emerg. eff. June 1, 1970; Amended by Laws 1993, SB 31, c. 183, § 34, emerg. eff. July 1, 1993.