Mass. Gen. Laws ch. 167H § 8
Each mutual holding company shall register with the commissioner on forms prescribed by him which shall include such information with respect to the financial condition, operations, management and intercompany relationships of the mutual holding company and its affiliates and related matters as he may deem necessary or appropriate to carry out the purposes of this chapter. The commissioner may, in his discretion, extend the time within which a mutual holding company shall register and file the requisite information.
The commissioner, from time to time, may require reports under oath to keep him informed as to whether the provisions of this chapter and any regulations established thereunder have been complied with, and he may make examinations of each mutual holding company and each affiliate thereof, the cost of which shall be assessed against and paid by such mutual holding company.
The commissioner may establish such rules and regulations as he deems necessary to carry out the purposes of this chapter.
Mass. Gen. Laws ch. 167H, § 8