Mont. Code Ann. § 31-4-112

This part applies to any civil action filed or certified as a class action in which litigation financing is provided. A litigation financer owes a fiduciary duty to all class members or intended beneficiaries of a certified class and shall act in a manner consistent with the litigation financer's fiduciary duty throughout the civil action. In addition to the disclosure requirements set forth in this part, the legal representative of the putative class shall disclose to all parties, putative class members, and the court any legal, financial, or other relationship between the legal representative and the litigation financer. A class member is entitled to receive from the class counsel a true and correct copy of the litigation financing contract on request.