| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Agrawal Renu | Director | PO BOX 30918, BILLINGS | /s/ Kirk D. Jensen, as attorney in fact for reporting person | 09 Sep 2025 | 0001838577 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | FIBK | Common Stock | Award | $59,980 | +1,827 | $32.83 | 1,827 | 05 Sep 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest on June 1, 2026, subject to the reporting person's provision of continuous service to the Registrant through the vesting date. |