First Interstate BancSystem, Inc. Reports Third Quarter 2026 Net Income of $62.2 million

First Interstate BancSystem reported Q3 2026 net income of $62.2 million, or $0.65 per diluted share, down from $83.9 million and $0.87 per share in Q2 2026. The provided text also reports Q3 2025 net income of $71.4 million and diluted EPS of $0.69, indicating a year-over-year decline; the article excerpt is truncated.