Mont. Code § 2-2-131
A public officer or public employee shall, prior to acting in a manner that may impinge on public duty, including the award of a permit, contract, or license, disclose the nature of the private interest that creates the conflict. The public officer or public employee shall make the disclosure in writing to the commissioner of political practices, listing the amount of private interest, if any, the purpose and duration of the person's services rendered, if any, and the compensation received for the services or other information that is necessary to describe the interest. If the public officer or public employee then performs the official act involved, the officer or employee shall state for the record the fact and summary nature of the interest disclosed at the time of performing the act.
§ 2-2-131, MCA