Cal. Ins. Code § 11529
In carrying out any such plan, the insurer may acquire any shares of its own stock by gift, bequest or purchase. Any shares so acquired shall, unless as a result of such acquisition all of the shares of the insurer shall have been acquired, be acquired in trust for the policyholders of the class or classes for whose benefit the plan provides that the stock of the insurer shall be acquired as hereinafter provided. Such shares shall be assigned and transferred on the books of such insurer to three or more trustees appointed by the insurer and approved by the commissioner under a trust agreement approved by the commissioner. Such trustees shall hold such stock in trust until all of the outstanding shares of capital stock of such insurer have been acquired, but for not longer than 30 years with such extensions of not more than five years each as may be granted by the commissioner. Such extensions may be granted by the commissioner if the plan so provides and if in his opinion the plan of acquisition of all of such stock can be completed within a reasonable period. Such trustees shall vote such stock at all corporate meetings at which stockholders have the right to vote. When all of the outstanding shares of capital stock of such insurer have been acquired, all said shares shall be canceled, the certificate of amendment of the insurer's articles of incorporation giving effect thereto shall be filed in accordance with the provisions of Chapter 9 (commencing with Section 1300) of Division 1 of Title 1, of the Corporations Code, and the insurer shall become a nonstock corporation for the profit of its members and such trust shall thereupon terminate. Thereafter such corporation shall be conducted for the mutual benefit, ratably, of its policyholders of the class or classes for whose benefit the stock was acquired and shall have power to issue nonassessable policies on a reserve basis subject to all provisions of law applicable to incorporated life insurers or life and disability insurers, as the case may be, issuing nonassessable policies on a reserve basis. Policies so issued may be upon the basis of full or partial participation therein as agreed between the insurer and the insured.
Upon the termination of any such voting trusts, either in accordance with its terms or as hereinabove provided, such plan of mutualization shall terminate, unless theretofore completed. Upon such termination, unless the plan of mutualization provides for the disposition of the shares acquired by the insurer under such plan or for the disposition of the proceeds thereof, the shares held by such trustees shall be disposed of in accordance with an order of the superior court of the county in which is located the principal office of such insurer, made upon a verified application of the commissioner.
Ca. Ins. Code § 11529