First Quarter 2012 Conference Call for InvestorsFirst Interstate BancSystem, Inc. will host a conference call to discuss first quarter 2012 results at 11:00 a.m. Eastern Time (9:00 a.m. MDT) on Tuesday, April 24, 2012. The conference call will be accessible by telephone and through the Internet. Participants may join the call by dialing 1-877-317-6789 or by logging on to www.FIBK.com. The call will be recorded and made available for replay after 1:00 p.m. Eastern Time (11:00 a.m. MDT) on April 24, 2012 through May 25, 2012 by dialing 1-877-344-7529 (using conference ID 10012022). The call will also be archived on our website, www.FIBK.com, for one year. About First Interstate BancSystem, Inc. First Interstate BancSystem, Inc. is a financial and bank holding company incorporated in 1971 and headquartered in Billings, Montana. The Company operates 71 banking offices in 42 communities in Montana, Wyoming and western South Dakota. Through First Interstate Bank, the Company delivers a comprehensive range of banking products and services to individuals, businesses, municipalities and other entities throughout the Company's market areas. Cautionary Statement This release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are covered by the safe harbor provisions of such sections. These statements include statements about decreased levels of criticized loans, stabilization of the loan portfolio, the Company's level of allowance for loan losses, manageability of credit costs and levels of profitability. Therefore, the Company's actual results, performance or achievements may differ materially from those expressed in or implied by these forward-looking statements. In some cases, you can identify forward-looking statements by the use of words such as “may,” “could,” “expect,” “intend,” “plan,” “seek,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue,” “likely,” “will,” “would” and variations of these terms and similar expressions, or the negative of these terms or similar expressions.