Ohio Revised Code Title XXXIX. Insurance § 3903.03

(A) All insurers who are doing, or have done, an insurance business in this state, and against whom claims arising from that business may exist now or in the future;

(B) All insurers who purport to do an insurance business in this state;

(C) All insurers who have insureds resident in this state;

(D) All other persons organized or in the process of organizing with the intent to do an insurance business in this state;

(E) All other companies, associations, societies, or entities subject to regulation by the superintendent of insurance under Titles XVII and XXXIX of the Revised Code.