| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Rupp Vicki L | Director | 4399 HACKETT ROAD, SAGINAW | /s/ Jennifer L. Gill, By Power of Attorney | 04 Mar 2026 | 0001795323 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ISBA | common | Award | +251 | +2.6% | $48.54* | 9,816 | 02 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes shares acquired through quarterly dividend reinvestment. |