Okla. Stat. tit. 61, § 114

The chief administrative officer and members of the governing body of the awarding public agency authorizing or awarding or supervising the execution of a public construction contract, and their relatives within the third degree of consanguinity or affinity, are forbidden to be interested directly or indirectly through stock ownership, partnership interest or otherwise in any such contract. Contracts entered into in violation of this section shall be void. Persons willfully violating this section shall be guilty of a Class D3 felony offense punishable by imprisonment as provided for in subsections B through F of Section 20P of Title 21 of the Oklahoma Statutes and shall be subject to removal from office.