First Interstate BancSystem (FIBK) Q3 2026 earnings summary

Executive summary

• Q3 2026 net income was $62.2 million, or $0.65 per diluted share, versus $83.9 million in Q2 and $71.4 million in Q3 2025; Q2 included a $19.5 million Nebraska branch-sale gain.

• FTE NIM rose to 3.55%, while lower loan balances and prior branch sales continued to weigh on balance-sheet size and year-over-year interest income.

Financial highlights

• FTE net interest income was $207.3 million, with adjusted FTE net interest income of $204.9 million excluding loan purchase-accounting accretion; GAAP net interest income was $206.2 million, up $4.0 million QoQ.

• Noninterest income was $43.3 million and noninterest expense was $157.1 million; Q2 noninterest income included a $19.5 million gain on the Nebraska branch sale.

• Total deposits declined $52.8 million, or 0.2%, QoQ to $21.39 billion; loans held for investment fell $296.0 million, or 2.1%, to $13.99 billion.

• Assets were $25.77 billion, down 0.4% QoQ and 5.7% YoY; income before tax was $81.9 million, down 24.3% QoQ and 11.6% YoY.

Outlook and guidance

• FY 2026 reported net interest income guidance is $814 million–$819 million, assuming continued margin expansion in Q4 and one additional rate increase.

• Year-end deposits are expected at $21.4 billion–$21.8 billion and loans at $13.5 billion–$13.8 billion; loan outlook reflects elevated payoffs and weak mortgage production, partly offset by improved commercial production.

• FY 2026 noninterest income guidance is $167 million–$170 million, excluding the $19.5 million Nebraska branch-sale gain; noninterest expense guidance is $629 million–$635 million.

• FY 2026 effective tax rate is expected at 22.75%–23%; long-term annualized net charge-offs are expected at 20–30 bps of average loans.