Mont. Code Ann. § 32-1-231

32-1-231 . Reports to department. (1) A bank shall make to the department regular call reports at least three times each year according to the form that may be prescribed by the department, verified by oath or affirmation of the president, vice president, or cashier of the bank and attested by the signature of at least two of the directors other than the subscribing officer.

(2) Each call report must exhibit in detail, and under appropriate schedules, the resources and liabilities of the bank at the close of business on any past day specified by the department. The "past day specified" by the department, under the provisions of this section, must be the day designated by the comptroller of currency of the United States for reports of national banking associations.

(3) The call report must be transmitted to the department within 30 days after the past day specified under subsection (2). A bank's successful and timely electronic transmittal of its call report to the applicable federal banking regulator or authority satisfies the bank's obligation to transmit the report to the department. The original signature page of the bank's call report that complies with subsection (1) must be permanently retained by the bank and available for the department's review. A nondepository trust company that is not insured by the federal deposit insurance corporation shall transmit its call report directly to the department in hard copy or imaged form.