Northwestern Corporation, Butte, MT. EIN 46-0172280. Annual reports 2009–2024. Also filed as Northwestern Energy.
Northwestern Corporation has 3 active retirement plans on file. The largest is the Northwestern Energy 401(k) Retirement Savings Plan, with 2,038 participants and $513 million in assets in 2024. Fidelity has been its recordkeeper since 2009.
Employee Benefits Administration Committee 3010 West 69TH Street Sioux Falls, SD 57108 (605) 978-2826As filed for 2024
In effect since
January 1, 1984
Year by year, 2009 to 2024
Plan year
Participants
Net assets
Recordkeeper
2024
2,038
$513 million
Fidelity
2023
2,009
$463 million
Fidelity
2022
1,942
$405 million
Fidelity
2021
1,882
$493 million
Fidelity
2020
1,863
$457 million
Fidelity
2019
1,853
$413 million
Fidelity
2018
1,842
$356 million
Fidelity
2017
1,851
$396 million
Fidelity
2016
1,829
$344 million
Fidelity
2015
1,853
$321 million
Fidelity
2014
1,868
$330 million
Fidelity
2013
1,978
$312 million
Fidelity
2012
1,665
$253 million
Fidelity
2011
1,654
$219 million
Fidelity
2010
1,612
$221 million
Fidelity
2009
1,593
$193 million
Fidelity
Northwestern Energy MT Pension Plan
Cash balance pensionActive
Active. The plan filed its annual report for the 2024 plan year.
Plan number
101Employer EIN 46-0172280
Participants (2024)
1,028
Net assets (2024)
$346 million
Plan administrator
Employee Benefits Administration Committee 3010 West 69TH Street Sioux Falls, SD 57108 (605) 978-2826As filed for 2024
In effect since
June 1, 1948
Earlier plan names: Northwestern Energy Pension Plan.
Year by year, 2009 to 2024
Plan year
Participants
Net assets
Recordkeeper
2024
1,028
$346 million
not listed
2023
1,037
$349 million
not listed
2022
1,327
$395 million
not listed
2021
1,342
$545 million
not listed
2020
2,423
$621 million
not listed
2019
2,472
$548 million
not listed
2018
2,516
$467 million
not listed
2017
2,558
$531 million
not listed
2016
2,593
$471 million
not listed
2015
2,637
$451 million
not listed
2014
3,004
$505 million
not listed
2013
2,967
$469 million
not listed
2012
2,993
$429 million
not listed
2011
3,020
$395 million
not listed
2010
3,071
$391 million
not listed
2009
3,132
$355 million
not listed
Northwestern Energy Sd/Ne Pension Plan
Cash balance pensionActive
Active. The plan filed its annual report for the 2024 plan year.
Plan number
001Employer EIN 46-0172280
Participants (2024)
358
Net assets (2024)
$52.6 million
Plan administrator
Employee Benefits Administration Committee 3010 West 69TH Street Sioux Falls, SD 57108 (605) 978-2826As filed for 2024
In effect since
October 1, 1940
Earlier plan names: Northwestern Corporation Pension Plan.
Year by year, 2009 to 2024
Plan year
Participants
Net assets
Recordkeeper
2024
358
$52.6 million
not listed
2023
383
$55.7 million
not listed
2022
399
$54.0 million
not listed
2021
411
$68.8 million
not listed
2020
433
$70.6 million
not listed
2019
454
$64.4 million
not listed
2018
477
$59.8 million
not listed
2017
493
$65.0 million
not listed
2016
518
$60.7 million
not listed
2015
534
$58.6 million
not listed
2014
550
$61.3 million
not listed
2013
575
$58.3 million
not listed
2012
594
$54.9 million
not listed
2011
615
$51.0 million
not listed
2010
655
$51.6 million
not listed
2009
682
$49.0 million
not listed
If you had money in one of these plans
Call Fidelity (fidelity.com), which runs the Northwestern Energy 401(k) Retirement Savings Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((605) 978-2826). That number was filed for 2024; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.
What these numbers are
They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.