| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Robbins Kristina | EVP, Chief Operations Officer | PO BOX 30918, BILLINGS | /s/ Kirk D. Jensen, as attorney in fact for reporting person | 29 May 2025 | 0001930719 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | FIBK | Common Stock | Tax liability | $6,912 | -258 | -1.6% | $26.79 | 16,084 | 28 May 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares. |