Capital Stock

3 Months Ended

Mar. 31, 2025

Equity [Abstract]

Capital Stock

The Company’s common stock is traded on the NASDAQ stock market under the symbol “FIBK.”

As of March 31, 2025, the Company is authorized to issue an aggregate of 150,100,000 shares of capital stock, of which 150,000,000 shares are designated as common stock, and 100,000 are designated as preferred stock. Our common stock is uncertificated and has one vote per share.

The Company had 104,909,761 shares and 104,585,964 shares of common stock outstanding as of March 31, 2025 and December 31, 2024, respectively, and no shares of preferred stock outstanding as of March 31, 2025 and December 31, 2024.

As of March 31, 2025, the Company does not have a stock repurchase program in place. Stock repurchases during the three months ended March 31, 2025 and 2024, were redemptions of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants in the Company’s equity compensation plans.