For purposes of Sections 17635 to 17639, inclusive, the term "prohibited transaction" means any transaction in which an organization subject to the provisions of Sections 17635 to 17639, inclusive-
the creator of such organization (if a trust); a person who has made a substantial contribution to such organization; a member of the family (as defined in Section 267(c)(4) of the Internal Revenue Code) of an individual who is the creator of such trust or who has made a substantial contribution to such organization; or a corporation controlled by such creator or person through the ownership, directly or indirectly, of 50 percent or more of the total combined voting power of all classes of stock entitled to vote or 50 percent or more of the total value of shares of all classes of stock of the corporation.
Ca. Rev. and Tax. Code § 17637