For the purposes of this article and except as context requires otherwise, “security” means any note, stock, treasury stock, share, bond, debenture, evidence of indebtedness, surplus note, contribution certificate, certificate of deposit for a security, certificate of interest or participation, voting trust certificate, reorganization certificate, investment contract (whether or not included as a provision in an insurance policy), or other similar instrument of an insurer or other person for financing formation or operations or management or acquisition of an insurer or interest therein, whether stock, mutual, reciprocal, Lloyds plan or other type of insurer.