NorthWestern Energy Group, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| BIRD BRIAN B | President and CEO | Tax Withholding | 3,129 | $67.84 | $212,271 | 202,884 | Dec 19, 2025 |
| HORSFALL JAN ROBERT | — | Award / Grant | 640 | $58.61 | $37,510 | 9,896 | Nov 4, 2025 |
| Yingling Jeffrey W. | — | Award / Grant | 640 | $58.61 | $37,510 | 22,026 | Nov 4, 2025 |
| Edwards Sherina M. | — | Award / Grant | 640 | $58.61 | $37,510 | 8,304 | Oct 6, 2025 |
| Goodin David L | — | Award / Grant | 640 | $58.61 | $37,510 | 3,950 | Oct 6, 2025 |
| Ide Britt E | — | Award / Grant | 640 | $58.61 | $37,510 | 13,462 | Oct 6, 2025 |
| Larson Kent T | — | Award / Grant | 640 | $58.61 | $37,510 | 10,367 | Oct 6, 2025 |
| Sullivan Linda G | — | Award / Grant | 938 | $58.61 | $54,976 | 31,600 | Oct 6, 2025 |
| YAZDI MAHVASH | — | Award / Grant | 640 | $58.61 | $37,510 | 20,884 | Oct 6, 2025 |
| HORSFALL JAN ROBERT | — | Award / Grant | 731 | $51.30 | $37,500 | 9,232 | Aug 1, 2025 |
| Yingling Jeffrey W. | — | Award / Grant | 731 | $51.30 | $37,500 | 21,157 | Aug 1, 2025 |
| Edwards Sherina M. | — | Award / Grant | 731 | $51.30 | $37,500 | 7,664 | Jul 1, 2025 |
| Goodin David L | — | Award / Grant | 731 | $51.30 | $37,500 | 3,310 | Jul 1, 2025 |
| Ide Britt E | — | Award / Grant | 731 | $51.30 | $37,500 | 12,678 | Jul 1, 2025 |
| Larson Kent T | — | Award / Grant | 731 | $51.30 | $37,500 | 9,727 | Jul 1, 2025 |
| Sullivan Linda G | — | Award / Grant | 1,072 | $51.30 | $54,994 | 30,463 | Jul 1, 2025 |
| YAZDI MAHVASH | — | Award / Grant | 731 | $51.30 | $37,500 | 20,105 | Jul 1, 2025 |
| Yingling Jeffrey W. | — | Award / Grant | 648 | $57.87 | $37,500 | 20,177 | May 5, 2025 |
| HORSFALL JAN ROBERT | — | Award / Grant | 648 | $57.87 | $37,500 | 8,483 | May 2, 2025 |
| Cashell Michael R | VP - Transmission | Sale | 2,349 | $58.03 | $136,312 | 24,088 | May 2, 2025 |
| Goodin David L | — | Award / Grant | 648 | $57.87 | $37,500 | 2,579 | Apr 4, 2025 |
| Larson Kent T | — | Award / Grant | 648 | $57.87 | $37,500 | 8,996 | Apr 4, 2025 |
| Edwards Sherina M. | — | Award / Grant | 648 | $57.87 | $37,500 | 6,933 | Apr 4, 2025 |
| Ide Britt E | — | Award / Grant | 648 | $57.87 | $37,500 | 11,794 | Apr 4, 2025 |
| Sullivan Linda G | — | Award / Grant | 950 | $57.87 | $54,977 | 29,168 | Apr 4, 2025 |
| YAZDI MAHVASH | — | Award / Grant | 648 | $57.87 | $37,500 | 19,217 | Apr 4, 2025 |
| Heim Shannon | VP and General Counsel | Award / Grant | 27 | $54.12 | $1,461 | 6,919 | Mar 7, 2025 |
| Hines John D | VP - Energy Supply & MT Gov | Award / Grant | 1,122 | $54.12 | $60,723 | 37,204 | Mar 7, 2025 |
| Vold Jeanne | VP - Technology | Award / Grant | 989 | — | — | 13,181 | Mar 7, 2025 |
| Heim Shannon | VP and General Counsel | Award / Grant | 2,257 | — | — | 6,871 | Mar 3, 2025 |
| Hines John D | VP - Energy Supply & MT Gov | Award / Grant | 787 | $54.12 | $42,592 | 34,642 | Mar 3, 2025 |
| BIRD BRIAN B | President and CEO | Award / Grant | 7,540 | $54.12 | $408,065 | 183,422 | Mar 3, 2025 |
| LaFave Bleau | VP - Bus Dvlpmt & Asset Mgmt | Award / Grant | 953 | — | — | 2,811 | Mar 3, 2025 |
| Cashell Michael R | VP - Transmission | Award / Grant | 1,551 | $54.12 | $83,940 | 24,787 | Mar 3, 2025 |
| Merkel Jason | VP - Distribution | Award / Grant | 1,024 | — | — | 4,952 | Mar 3, 2025 |
| Berzina Jeffrey B. | Controller | Award / Grant | 566 | $54.12 | $30,632 | 3,261 | Mar 3, 2025 |
| Lail Crystal Dawn | VP and CFO | Award / Grant | 4,012 | — | — | 29,865 | Mar 3, 2025 |
| Schroeppel Bobbi L | VP - HR, Cust Care, Corp Comm | Award / Grant | 1,677 | $54.12 | $90,759 | 33,817 | Mar 3, 2025 |
| Ide Britt E | — | Sale | 702 | $54.32 | $38,133 | 11,021 | Feb 25, 2025 |
| HORSFALL JAN ROBERT | — | Award / Grant | 702 | $53.46 | $37,529 | 7,827 | Feb 5, 2025 |
| Yingling Jeffrey W. | — | Award / Grant | 702 | $53.46 | $37,529 | 19,320 | Feb 5, 2025 |
| Edwards Sherina M. | — | Award / Grant | 702 | $53.46 | $37,529 | 6,285 | Jan 6, 2025 |
| YAZDI MAHVASH | — | Award / Grant | 702 | $53.46 | $37,529 | 18,432 | Jan 6, 2025 |
| Sullivan Linda G | — | Award / Grant | 1,029 | $53.46 | $55,010 | 28,023 | Jan 6, 2025 |
| Larson Kent T | — | Award / Grant | 702 | $53.46 | $37,529 | 8,348 | Jan 6, 2025 |
| Ide Britt E | — | Award / Grant | 702 | $53.46 | $37,529 | 11,723 | Jan 6, 2025 |
| Goodin David L | — | Award / Grant | 702 | $53.46 | $37,529 | 1,931 | Jan 6, 2025 |
| Clark Anthony Thomas | — | Sale | 7,400 | $51.95 | $384,430 | 16,816 | Dec 12, 2024 |
| Ide Britt E | — | Sale | 700 | $53.57 | $37,499 | 10,888 | Dec 9, 2024 |
| Goodin David L | — | Award / Grant | 1,229 | $54.39 | $66,845 | 1,229 | Dec 3, 2024 |