Utah Code § 31A-19a-308
§ 31A-19a-308. Rate service organizations -- Filing requirements.
(1) A rate service organization shall file with the commissioner any of the following that is used in this state: (a) any statistical plan; (b) all prospective loss costs; (c) provisions for special assessments; (d) all supplementary rating information; and (e) any change, amendment, or modification of an item described in Subsections (1)(a) through (d). (2) The filings required under Subsection (1) shall be subject to Sections 31A-19a-203 and 31A-19a-206 and other provisions of this chapter relating to filings made by insurers.