Wyo. Stat. Ann. § 13-3-302

All demand and matured debts due to any bank on which interest has not been paid for a period of at least twelve (12) months, unless in the judgment of the state banking commissioner the debts are well secured or are in the process of collection, are bad debts and shall be charged in whole or in part to the reserve for losses or to undivided profits upon instructions of the state banking commissioner or any duly appointed examiner.