Listed

First Interstate Bancsystem Inc

FIBKNasdaqCIK 860413FinancialsFiscal year ends Dec 31

Standardized line items from XBRL company facts, the last twelve quarters. Negative values are in parentheses. A figure marked d is derived from year-to-date figures.

Income statement

Net income$83.9m, Q2 FY2026
First Interstate Bancsystem Inc, income statement, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Interest expense$m109Interest expense, Q3 FY2023, three months to 2023-09-30$108.9m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure117Interest expense, Q4 FY2023, three months to 2023-12-31$116.5m. XBRL concept us-gaap:InterestExpense. 10-K filed 2024-02-29, accession 0000860413-24-000016. Derived: 12-month figure less the 9-month figure.Report this figure125Interest expense, Q1 FY2024, three months to 2024-03-31$124.6m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-05-03, accession 0000860413-24-000066.Report this figure122Interest expense, Q2 FY2024, three months to 2024-06-30$122.3m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-08-02, accession 0000860413-24-000118.Report this figure123Interest expense, Q3 FY2024, three months to 2024-09-30$122.5m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figurenot reportednot reportednot reportednot reportednot reportednot reportednot reported
Income tax$m22.0Income tax, Q3 FY2023, three months to 2023-09-30$22.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure19.4Income tax, Q4 FY2023, three months to 2023-12-31$19.4m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure18.3Income tax, Q1 FY2024, three months to 2024-03-31$18.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure18.4Income tax, Q2 FY2024, three months to 2024-06-30$18.4m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure17.2Income tax, Q3 FY2024, three months to 2024-09-30$17.2m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure14.6Income tax, Q4 FY2024, three months to 2024-12-31$14.6m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure16.2Income tax, Q1 FY2025, three months to 2025-03-31$16.2m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure21.8Income tax, Q2 FY2025, three months to 2025-06-30$21.8m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure21.2Income tax, Q3 FY2025, three months to 2025-09-30$21.2m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure30.4Income tax, Q4 FY2025, three months to 2025-12-31$30.4m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure17.3Income tax, Q1 FY2026, three months to 2026-03-31$17.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure24.3Income tax, Q2 FY2026, three months to 2026-06-30$24.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure
Net income$m72.7Net income, Q3 FY2023, three months to 2023-09-30$72.7m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure61.5Net income, Q4 FY2023, three months to 2023-12-31$61.5m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure58.4Net income, Q1 FY2024, three months to 2024-03-31$58.4m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure60.0Net income, Q2 FY2024, three months to 2024-06-30$60.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure55.5Net income, Q3 FY2024, three months to 2024-09-30$55.5m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure52.1Net income, Q4 FY2024, three months to 2024-12-31$52.1m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure50.2Net income, Q1 FY2025, three months to 2025-03-31$50.2m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure71.7Net income, Q2 FY2025, three months to 2025-06-30$71.7m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure71.4Net income, Q3 FY2025, three months to 2025-09-30$71.4m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure109Net income, Q4 FY2025, three months to 2025-12-31$108.8m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure60.2Net income, Q1 FY2026, three months to 2026-03-31$60.2m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure83.9Net income, Q2 FY2026, three months to 2026-06-30$83.9m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure
Diluted EPS$ per share0.70Diluted EPS, Q3 FY2023, three months to 2023-09-30$0.70 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figurenot reported0.57Diluted EPS, Q1 FY2024, three months to 2024-03-31$0.57 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure0.58Diluted EPS, Q2 FY2024, three months to 2024-06-30$0.58 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure0.54Diluted EPS, Q3 FY2024, three months to 2024-09-30$0.54 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figurenot reported0.49Diluted EPS, Q1 FY2025, three months to 2025-03-31$0.49 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure0.69Diluted EPS, Q2 FY2025, three months to 2025-06-30$0.69 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure0.69Diluted EPS, Q3 FY2025, three months to 2025-09-30$0.69 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figurenot reported0.61Diluted EPS, Q1 FY2026, three months to 2026-03-31$0.61 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure0.87Diluted EPS, Q2 FY2026, three months to 2026-06-30$0.87 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure
Basic EPS$ per share0.70Basic EPS, Q3 FY2023, three months to 2023-09-30$0.70 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figurenot reported0.57Basic EPS, Q1 FY2024, three months to 2024-03-31$0.57 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure0.58Basic EPS, Q2 FY2024, three months to 2024-06-30$0.58 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure0.54Basic EPS, Q3 FY2024, three months to 2024-09-30$0.54 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figurenot reported0.49Basic EPS, Q1 FY2025, three months to 2025-03-31$0.49 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure0.69Basic EPS, Q2 FY2025, three months to 2025-06-30$0.69 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure0.69Basic EPS, Q3 FY2025, three months to 2025-09-30$0.69 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figurenot reported0.61Basic EPS, Q1 FY2026, three months to 2026-03-31$0.61 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure0.87Basic EPS, Q2 FY2026, three months to 2026-06-30$0.87 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure

Balance sheet

Long-term debt$99.0m, FY2023
Shareholders' equity$3.32bn, Q2 FY2026
First Interstate Bancsystem Inc, balance sheet, quarterly
Line itemUnitQ3 FY20232023-09-30FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Cash and equivalents$bnnot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reported
Total assets$bn30.5Total assets, Q3 FY2023, at 2023-09-30$30.54bn. XBRL concept us-gaap:Assets. 10-Q filed 2023-11-03, accession 0000860413-23-000186.Report this figure30.7Total assets, FY2023, at 2023-12-31$30.67bn. XBRL concept us-gaap:Assets. 10-K filed 2025-02-28, accession 0000860413-25-000022.Report this figure30.1Total assets, Q1 FY2024, at 2024-03-31$30.14bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-05-03, accession 0000860413-24-000066.Report this figure30.3Total assets, Q2 FY2024, at 2024-06-30$30.29bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-08-02, accession 0000860413-24-000118.Report this figure29.6Total assets, Q3 FY2024, at 2024-09-30$29.60bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure29.1Total assets, FY2024, at 2024-12-31$29.14bn. XBRL concept us-gaap:Assets. 10-K filed 2026-02-26, accession 0000860413-26-000011.Report this figure28.3Total assets, Q1 FY2025, at 2025-03-31$28.28bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure27.6Total assets, Q2 FY2025, at 2025-06-30$27.57bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure27.3Total assets, Q3 FY2025, at 2025-09-30$27.33bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure26.6Total assets, FY2025, at 2025-12-31$26.64bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure26.4Total assets, Q1 FY2026, at 2026-03-31$26.43bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure25.9Total assets, Q2 FY2026, at 2026-06-30$25.89bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure
Total liabilities$bn27.5Total liabilities, Q3 FY2023, at 2023-09-30$27.46bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2023-11-03, accession 0000860413-23-000186.Report this figure27.4Total liabilities, FY2023, at 2023-12-31$27.44bn. XBRL concept us-gaap:Liabilities. 10-K filed 2025-02-28, accession 0000860413-25-000022.Report this figure26.9Total liabilities, Q1 FY2024, at 2024-03-31$26.94bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-05-03, accession 0000860413-24-000066.Report this figure27.1Total liabilities, Q2 FY2024, at 2024-06-30$27.06bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-08-02, accession 0000860413-24-000118.Report this figure26.2Total liabilities, Q3 FY2024, at 2024-09-30$26.23bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure25.8Total liabilities, FY2024, at 2024-12-31$25.83bn. XBRL concept us-gaap:Liabilities. 10-K filed 2026-02-26, accession 0000860413-26-000011.Report this figure24.9Total liabilities, Q1 FY2025, at 2025-03-31$24.92bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure24.1Total liabilities, Q2 FY2025, at 2025-06-30$24.14bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure23.9Total liabilities, Q3 FY2025, at 2025-09-30$23.88bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure23.2Total liabilities, FY2025, at 2025-12-31$23.19bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure23.1Total liabilities, Q1 FY2026, at 2026-03-31$23.07bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure22.6Total liabilities, Q2 FY2026, at 2026-06-30$22.56bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure
Long-term debt$bnnot reported0.1Long-term debt, FY2023, at 2023-12-31$99.0m. XBRL concept us-gaap:LongTermDebt. 10-K filed 2024-02-29, accession 0000860413-24-000016.Report this figurenot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reported
Shareholders' equity$bn3.1Shareholders' equity, Q3 FY2023, at 2023-09-30$3.09bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure3.2Shareholders' equity, FY2023, at 2023-12-31$3.23bn. XBRL concept us-gaap:StockholdersEquity. 10-K filed 2026-02-26, accession 0000860413-26-000011.Report this figure3.2Shareholders' equity, Q1 FY2024, at 2024-03-31$3.21bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure3.2Shareholders' equity, Q2 FY2024, at 2024-06-30$3.23bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure3.4Shareholders' equity, Q3 FY2024, at 2024-09-30$3.37bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure3.3Shareholders' equity, FY2024, at 2024-12-31$3.30bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure3.4Shareholders' equity, Q1 FY2025, at 2025-03-31$3.36bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure3.4Shareholders' equity, Q2 FY2025, at 2025-06-30$3.42bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure3.4Shareholders' equity, Q3 FY2025, at 2025-09-30$3.45bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure3.4Shareholders' equity, FY2025, at 2025-12-31$3.45bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure3.4Shareholders' equity, Q1 FY2026, at 2026-03-31$3.36bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure3.3Shareholders' equity, Q2 FY2026, at 2026-06-30$3.32bn. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure

Cash flow

Operating cash flow$57.9m, Q2 FY2026
Share repurchases$69.5m, Q2 FY2026
First Interstate Bancsystem Inc, cash flow, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Operating cash flow$m129Operating cash flow, Q3 FY2023, three months to 2023-09-30$129.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2024-11-04, accession 0000860413-24-000130. Derived: 9-month figure less the 6-month figure.Report this figure69.3Operating cash flow, Q4 FY2023, three months to 2023-12-31$69.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure87.6Operating cash flow, Q1 FY2024, three months to 2024-03-31$87.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure82.3Operating cash flow, Q2 FY2024, three months to 2024-06-30$82.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-08-06, accession 0000860413-25-000117. Derived: 6-month figure less the 3-month figure.Report this figure89.9Operating cash flow, Q3 FY2024, three months to 2024-09-30$89.9m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure95.2Operating cash flow, Q4 FY2024, three months to 2024-12-31$95.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure78.5Operating cash flow, Q1 FY2025, three months to 2025-03-31$78.5m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure68.1Operating cash flow, Q2 FY2025, three months to 2025-06-30$68.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure91.7Operating cash flow, Q3 FY2025, three months to 2025-09-30$91.7m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure67.3Operating cash flow, Q4 FY2025, three months to 2025-12-31$67.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure55.0Operating cash flow, Q1 FY2026, three months to 2026-03-31$55.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure57.9Operating cash flow, Q2 FY2026, three months to 2026-06-30$57.9m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure
Dividends paid$m49.2Dividends paid, Q3 FY2023, three months to 2023-09-30$49.2m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2024-11-04, accession 0000860413-24-000130. Derived: 9-month figure less the 6-month figure.Report this figure48.7Dividends paid, Q4 FY2023, three months to 2023-12-31$48.7m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure48.8Dividends paid, Q1 FY2024, three months to 2024-03-31$48.8m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure49.0Dividends paid, Q2 FY2024, three months to 2024-06-30$49.0m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2025-08-06, accession 0000860413-25-000117. Derived: 6-month figure less the 3-month figure.Report this figure49.1Dividends paid, Q3 FY2024, three months to 2024-09-30$49.1m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure49.0Dividends paid, Q4 FY2024, three months to 2024-12-31$49.0m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure48.0Dividends paid, Q1 FY2025, three months to 2025-03-31$48.0m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure49.1Dividends paid, Q2 FY2025, three months to 2025-06-30$49.1m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure49.1Dividends paid, Q3 FY2025, three months to 2025-09-30$49.1m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure48.1Dividends paid, Q4 FY2025, three months to 2025-12-31$48.1m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure45.7Dividends paid, Q1 FY2026, three months to 2026-03-31$45.7m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure46.0Dividends paid, Q2 FY2026, three months to 2026-06-30$46.0m. XBRL concept us-gaap:PaymentsOfDividendsCommonStock. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure
Share repurchases$m0.0Share repurchases, Q3 FY2023, three months to 2023-09-30$0. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2024-11-04, accession 0000860413-24-000130. Derived: 9-month figure less the 6-month figure.Report this figure32.2Share repurchases, Q4 FY2023, three months to 2023-12-31$32.2m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure1.1Share repurchases, Q1 FY2024, three months to 2024-03-31$1.1m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure0.0Share repurchases, Q2 FY2024, three months to 2024-06-30$0. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-08-06, accession 0000860413-25-000117. Derived: 6-month figure less the 3-month figure.Report this figure0.1Share repurchases, Q3 FY2024, three months to 2024-09-30$100.0k. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure0.0Share repurchases, Q4 FY2024, three months to 2024-12-31$0. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure3.2Share repurchases, Q1 FY2025, three months to 2025-03-31$3.2m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure0.0Share repurchases, Q2 FY2025, three months to 2025-06-30$0. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure27.5Share repurchases, Q3 FY2025, three months to 2025-09-30$27.5m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-11-06, accession 0000860413-25-000165. Derived: 9-month figure less the 6-month figure.Report this figure91.2Share repurchases, Q4 FY2025, three months to 2025-12-31$91.2m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0000860413-26-000011. Derived: 12-month figure less the 9-month figure.Report this figure87.7Share repurchases, Q1 FY2026, three months to 2026-03-31$87.7m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure69.5Share repurchases, Q2 FY2026, three months to 2026-06-30$69.5m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-08-03, accession 0000860413-26-000084. Derived: 6-month figure less the 3-month figure.Report this figure

Shares

Diluted shares (weighted)96.79m, Q2 FY2026
First Interstate Bancsystem Inc, shares, quarterly
Line itemUnitQ3 FY20222022-09-30Q1 FY20232023-03-31Q2 FY20232023-06-30Q3 FY20232023-09-30Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Diluted shares (weighted)m shares107Diluted shares (weighted), Q3 FY2022, three months to 2022-09-30106,589,699 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2023-11-03, accession 0000860413-23-000186.Report this figure104Diluted shares (weighted), Q1 FY2023, three months to 2023-03-31103,818,719 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-05-03, accession 0000860413-24-000066.Report this figure104Diluted shares (weighted), Q2 FY2023, three months to 2023-06-30103,822,891 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-08-02, accession 0000860413-24-000118.Report this figure104Diluted shares (weighted), Q3 FY2023, three months to 2023-09-30103,826,427 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-11-04, accession 0000860413-24-000130.Report this figure103Diluted shares (weighted), Q1 FY2024, three months to 2024-03-31103,040,034 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-05-07, accession 0000860413-25-000060.Report this figure103Diluted shares (weighted), Q2 FY2024, three months to 2024-06-30103,093,135 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-08-06, accession 0000860413-25-000117.Report this figure103Diluted shares (weighted), Q3 FY2024, three months to 2024-09-30103,233,618 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure103Diluted shares (weighted), Q1 FY2025, three months to 2025-03-31103,415,987 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure103Diluted shares (weighted), Q2 FY2025, three months to 2025-06-30103,363,692 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure103Diluted shares (weighted), Q3 FY2025, three months to 2025-09-30103,386,991 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-06, accession 0000860413-25-000165.Report this figure99.2Diluted shares (weighted), Q1 FY2026, three months to 2026-03-3199,241,041 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-07, accession 0000860413-26-000038.Report this figure96.8Diluted shares (weighted), Q2 FY2026, three months to 2026-06-3096,785,949 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure

Shares outstanding: 95.30mShares outstanding, period not labelled, at 2026-07-3095,304,607 shares. XBRL concept dei:EntityCommonStockSharesOutstanding. 10-Q filed 2026-08-03, accession 0000860413-26-000084.Report this figure at Jul 30, 2026, from the cover of the 10-Q filed Aug 3, 2026.

Source: SEC EDGAR, XBRL company facts. Last ingested by Listed: Oct 24, 2026, 15:26 ET. Listed shows no prices and gives no investment advice.