Heim Shannon 4
4 · NorthWestern Energy Group, Inc. · Filed Feb 25, 2026
Insider Transaction Report
Form 4
Heim Shannon
VP and General Counsel
Transactions
- Award
Common Stock
[F1][F2][F3][F4]2026-02-24$68.45/sh+148$10,131→ 6,880 total - Tax Payment
Common Stock
2026-02-24−11→ 6,869 total
Footnotes (4)
- [F1]Includes underlying deferred share units that are issuable subsequent to the reporting person's termination of service from the company.
- [F2]Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2023 Long-Term Incentive Program.
- [F3]Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award.
- [F4]Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.
Signature
Emily L. Folsom, by power of attorney|2026-02-25