EntityWire

EntityWire / EIN 92-1008893

Employer with a benefit plan

KNIFE RIVER CORPORATION

EIN 92-1008893. What DOL Form 5500 filings (EFAST2) and SEC EDGAR company filings say about this entity, with the source and date on every fact. Latest record 2026-08-14.

Employer with a benefit plan ยท SEC filer

KNIFE RIVER CORPORATION

Also filed as Knife River Holding Co

1150 WEST CENTURY AVENUE, BISMARCK, ND 585065568

EIN

92-1008893

SEC CIK

0001955520

SEC · 2026-08-14

Industry (SIC)

Mining & Quarrying of Nonmetallic Minerals (No Fuels) (1400)

SEC · 2026-08-14

State of incorporation

DE

SEC · 2026-08-14

Ticker

KNF

SEC · 2026-08-14

Latest SEC filing

SCHEDULE 13G/A 2026-08-14

SEC · 2026-08-14

Benefit plan 4, 2024 filing

KNIFE RIVER CORPORATION SALARIED EMPLOYEES' PENSION PLAN

DOL · 2025-09-03

Participants (start of year)

199

DOL · 2025-09-03

Plan features

code 1A1B1I3H

DOL · 2025-09-03

Plan type

Single-employer plan

DOL · 2025-09-03

Business code (NAICS)

237310

DOL · 2025-09-03

Benefit plan 5, 2024 filing

KNIFE RIVER MASTER TRUST

DOL · 2025-09-02

Plan type

Direct filing entity

DOL · 2025-09-02

Benefit plan 501, 2024 filing

KNIFE RIVER CORPORATION HEALTH AND WELFARE BENEFITS PROGRAM

DOL · 2025-07-14

Participants (start of year)

3,395

DOL · 2025-07-14

From DOL Form 5500 filings (EFAST2) · SEC EDGAR company filings. Latest record 2026-08-14.

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