| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tatum Timothy E | VP Regulatory Affairs (IPC) | 1221 W IDAHO ST, BOISE | /s/ Cheryl W. Thompson, Attorney-in-Fact | 04 Mar 2026 | 0002078099 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDA | Common Stock | Sale | $210,772 | -1,479 | -100% | $142.51 | 2 | 03 Mar 2026 | Direct | F1 |
| holding | IDA | Common Stock (401(k)) | 3,321 | 03 Mar 2026 | By Plan Trustee | F2 |
| Id | Content |
|---|---|
| F1 | Comprised of 2.288 shares in the reporting person's dividend reinvestment plan to date. |
| F2 | Total shares in 401(k) plan to date. |