Mont. Code Ann. § 32-1-504

32-1-504 . Deposits in insolvent bank. (1) Except as otherwise provided by the Uniform Commercial Code, whenever any bank shall be insolvent in the manner described and set forth in this chapter, such bank shall not accept or receive on deposit any money, bank bills or notes, United States treasury notes or currency, or other notes, bills, or drafts circulating as money or currency or transact any other business in connection with its operations, except as trustee for the depositors and parties transacting business with them, and it or they shall keep all such deposits of money, bills or notes, or United States treasury notes or currency, or other notes, bills, or drafts circulating as money or currency separate and apart from the general assets of the bank from and after the date of the accrual of such insolvency. When such impairment or insolvency has been made good, such deposits received in trust may be transferred to the general assets of the bank on and by written consent of the department.

(2) In the event such insolvency be not made good, then any and all such trust deposits shall be returned to the depositors making them.

(3) Any officer, director, cashier, manager, member, partner, or managing partner thereof who shall knowingly accept or receive, be accessory to, or permit or connive at the receiving or accepting of such trust deposits, except in the manner hereinbefore set forth in this section, shall be deemed guilty of a felony and upon conviction thereof shall be punished by a fine not exceeding $10,000 or imprisonment in the state prison not exceeding 5 years or by both fine and imprisonment.