NorthWestern Energy Group Inc. Watch

from 10-Q 22 pages NorthWestern Energy Group, Inc. Amended and Restated Equity Compensation Plan Effective March 10, 2005 Amended October 31, 2007 Amended and Restated February 23, 2011 Amended and Restated April 8, 2011 Amended and Restated (And Renamed) February 18, 2014 Amended and Restated February 11, 2021 Amended and Restated October 2, 2023 Amended and Restated April 25, 2024 NorthWestern Energy Group, Inc. Amended and Restated Equity Compensation Plan

from 10-Q 19 pages NorthWestern Corporation Key Employee Severance Plan Effective October 19, 2016 Amended and Restated Effective as of April 25, 2024

from 10-K 25 pages NorthWestern Corporation Officers Deferred Compensation Plan Effective June 1, 2009 as Amended October 2, 2023

from 8-K 41 pages Asset and Stock Transfer Agreement

from 10-Q 23 pages NorthWestern Energy Group, Inc. Deferred Compensation Plan for Non-Employee Directors Effective February 1, 2005 as Amended December 15, 2005 as Amended October 31, 2007 as Amended April 21, 2010 as Amended (And Renamed) October 2, 2023

from 10-Q 20 pages NorthWestern Energy Group, Inc. Amended and Restated Equity Compensation Plan Effective March 10, 2005 Amended October 31, 2007 Amended and Restated February 23, 2011 Amended and Restated April 8, 2011 Amended and Restated (And Renamed) February 18, 2014 Amended and Restated February 11, 2021 Amended and Restated (And Renamed) October 2, 2023 NorthWestern Energy Group, Inc. Amended and Restated Equity Compensation Plan