Section 4991 - Applicability to existing mutual insurers(a) Except as provided in subsection (b) of this section, this chapter shall apply to all mutual insurers.(b) Section 4933 of this title as in effect prior to October 17, 2010, is hereby repealed, except as set forth in the next sentence. Section 4933 of this title as in effect on October 16, 2010, shall apply to any mutual insurer that is a domestic mutual company as of such date that has not submitted a written notice to the Commissioner under subsection (c) of this section.(c) Any mutual insurer that is a domestic mutual company as of the date immediately prior to the enactment of this chapter that otherwise would be subject to the application of this chapter, § 4933 of this title as in effect on such date may elect to become subject to the application of this chapter instead by submitting to the Commissioner a written notice to that effect. 77 Del. Laws, c. 466, § 2.;