Investar (ISTR) investor relations material

Executive summary

• Net income available to common shareholders was $5.4 million ($0.51 per diluted share) for Q4 2025, down from $5.7 million in Q3 2025 and $6.1 million in Q4 2024.

• Core diluted EPS was $0.58, up from $0.54 in Q3 2025 but down from $0.65 in Q4 2024; Q4 2024 included $3.1 million in nonrecurring BOLI income.

• Net interest margin improved to 3.20%, up 4 bps sequentially and 55 bps year-over-year.

• Completed the acquisition of Wichita Falls Bancshares, expanding into north Dallas and Wichita Falls markets.

Financial highlights

• Net interest income rose to $21.6 million, up 2.3% from Q3 2025 and 23.7% from Q4 2024.

• Noninterest income was $1.8 million, down 38.3% sequentially and 64.3% year-over-year, mainly due to lower BOLI income.

• Noninterest expense was $16.3 million, down 1.5% from Q3 2025 and up 1.2% from Q4 2024.

• Book value per share increased to $27.63, up 2.5% sequentially and 12.5% year-over-year.

• Tangible book value per share rose to $23.42, up 2.9% sequentially and 15.3% year-over-year.

Outlook and guidance

• Management remains focused on balance sheet optimization, organic growth, and shareholder value creation.

• Continued emphasis on interest rate neutral balance sheet and cost control in a declining rate environment.