Rule 13. An insurer required to file an annual registration statement under section 1324 of the act, MCL 500.1324, shall furnish the required information on a summary of changes to registration statement, Form C, by May 1 of each year for the immediately preceding calendar year, unless an extension is granted by the director under section 1324 of the act, MCL 500.1324.
Mich. Admin. Code R. 500.83