| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Rupp Vicki L | Director | 4399 HACKETT ROAD, SAGINAW | /s/ Jerome E. Schwind, By Power of Attorney | 2025-09-04 | 0001795323 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ISBA | common | Award | $1.16K | +35 | +0.37% | $33.13 | 9.52K | Sep 2, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes shares acquired through quarterly dividend reinvestment. |