Original filing (PDF)20250930142614NAL0005542179001

NORTHWESTERN CORPORATION

Name: NORTHWESTERN CORPORATION — NORTHWESTERN ENERGY SD/NE PENSION PLAN, Form 5500 (2024)
Creator: NORTHWESTERN CORPORATION

Form 5500

FILING_RECEIVED

NORTHWESTERN ENERGY SD/NE PENSION PLAN

Defined-benefit pension plan

Signals · 1

No recordkeeper disclosed

Active participants

104

Accounts w/ balance

—

Plan assets (EOY)

$52.6M

Net assets (EOY)

$52.6M

How this plan invests

This plan

1 collective trust

Schedule D

Individual securities

on each trust's filing

This plan doesn't hold securities directly — it invests through trusts. Click a trust below to drill into its securities.

Plan health score (directional)

/ 100

Grade A

Top-tier plan health

Directional indicator computed from public Form 5500 data — compliance, concentration, cost, vendor stack and participation. Not a fiduciary tool.

Compliance & disclosures

100

Concentration risk

Total plan cost

Vendor stack

Participation health

Decision-maker contacts

CFO / Head of HR / Benefits Manager — verified email + LinkedIn for NORTHWESTERN CORPORATION.

Plan sponsor

Name

NORTHWESTERN CORPORATION

DBA

NORTHWESTERN ENERGY

EIN

46-0172280

Address

11 EAST PARK STREET · BUTTE, MT · 597011711

Phone

(605) 978-2826

Industry

Utilitiessee all

Plan administrator

Name

EMPLOYEE BENEFITS ADMINISTRATION COMMITTEE

EIN

46-0172280

City

SIOUX FALLS, SD

Phone

(605) 978-2826

Plan characteristics

Plan number

001

Plan year

2024

Plan year begin

2024-01-01

Tax period

2024-12-31

Filed

2025-09-30

Pension benefit codes

1A · Pay-related DB formula

1C · Cash balance or similar hybrid DB

Audit & trust (Schedule H)

Auditor

EIDE BAILLY LLP

Trustee / custodian

—

Trustee phone

—

Service providers (Schedule C)

No Schedule C providers reported

Investments

1 pooled fund· $52.6M(100% of reported assets)

Rows tagged as a trust or pooled fund hold many underlying securities. Their holdings are itemized on each fund’s own Form 5500.

Investment	Type	Current value	% of plan
NORTHWESTERN ENERGY MASTER RETIREME THE NORTHERN TRUST COMPANY · EIN 20-8276648 / PN 104	Master Trust	$52.6M	100.0%

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