| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tatum Timothy E | VP Regulatory Affairs | 1221 W IDAHO ST, BOISE | /s/ Cheryl W. Thompson, Attorney-in-Fact | 12 Aug 2025 | 0002078099 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDA | Common Stock | Options Exercise | $0 | +535 | +43% | $0.000000 | 1,767 | 01 Jan 2025 | Direct | F1, F2 |
| transaction | IDA | Common Stock | Tax liability | $29,292 | -270 | -15% | $108.49 | 1,497 | 02 Jan 2025 | Direct | F2 |
| transaction | IDA | Common Stock | Award | +1,070 | +71% | 2,567 | 21 Feb 2025 | Direct | F2, F3 | ||
| transaction | IDA | Common Stock | Tax liability | $57,671 | -505 | -20% | $114.20 | 2,062 | 21 Feb 2025 | Direct | F2 |
| transaction | IDA | Common Stock | Sale | $231,372 | -2,006 | -97% | $115.34 | 59 | 12 Mar 2025 | Direct | F4 |
| holding | IDA | Common Stock (401(k)) | 3,233 | 01 Jan 2025 | By Plan Trustee | F5 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDA | Restricted Stock Units | Options Exercise | $0 | -535 | -100% | $0.000000 | 0 | 01 Jan 2025 | Common Stock | 535 | $0.000000 | Direct | F1, F6 |
| transaction | IDA | Restricted Stock Units | Award | $0 | +684 | $0.000000 | 684 | 21 Feb 2025 | Common Stock | 684 | $0.000000 | Direct | F1, F7 |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit represents a contingent right to receive one share of IDA common stock. |
| F2 | Includes 56.410 shares in the reporting person's dividend reinvestment plan as of the transaction date. |
| F3 | These shares were received for no consideration upon the satisfaction of performance criteria underlying an award of performance-based units for the 2022-2024 performance period. |
| F4 | Comprised of 58.777 shares in the reporting person's dividend reinvestment plan as of the transaction date. |
| F5 | Total shares in 401(k) plan to date. |
| F6 | The restricted stock units vested on January 1, 2025. |
| F7 | The restricted stock units vest on January 1, 2028. |