(a) Unless exempt under Section 401.006, 401.007, or 401.008 and except as otherwise provided by Sections 401.005 and 401.016, an insurer or health maintenance organization shall:
(1) have an annual audit performed by an accountant; and
(2) file with the commissioner on or before June 30 an audited financial report for the preceding calendar year.
(b) The commissioner may require an insurer or health maintenance organization to file an audited financial report on a date that precedes June 30. The commissioner must notify the insurer or health maintenance organization of the filing date not later than the 90th day before that date.

(c) An insurer or health maintenance organization may request an extension of the filing date by submitting the request in writing before the 10th day preceding the filing date. The request must include sufficient detail for the commissioner to make an informed decision on the requested extension. The commissioner may extend the filing date for one or more 30-day periods if the commissioner determines that there is good cause for the extension based on a showing by the insurer or health maintenance organization and the insurer’s or health maintenance organization’s accountant of the reasons for requesting the extension.