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Knife River acquires Donaldson Brothers in Montana

PUBLIC · KNFMar 23, 2026

Acquiring Company

Knife River Corporation

Acquired Company

Donaldson Brothers Ready Mix

BismarckMontanaManufacturingConstructionBuilding MaintenanceBuilding MaterialManufacturing

Description

Knife River Corporation has acquired the assets of Donaldson Brothers Ready Mix Inc. in Montana, marking its third acquisition in 2026. This acquisition strengthens Knife River's presence in the aggregates market and supports its growth strategy in mid-size markets. The Donaldson assets provide strategic aggregate reserves in western Montana.

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Company Information

Company

Knife River Corporation

Location

Bismarck, North Dakota, United States

About

Knife River Corporation, a member of the S&P MidCap 400 index, mines aggregates and markets crushed stone, sand, gravel and related construction materials, including ready-mix concrete, asphalt and other value-added products. Knife River also performs vertically integrated contracting services, specializing in publicly funded DOT projects and private projects across the industrial, commercial and residential space.

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Frequently asked

Who acquired Donaldson Brothers Ready Mix?

Donaldson Brothers Ready Mix was acquired by Knife River Corporation, based in Bismarck. The deal was reported on March 23, 2026. Knife River Corporation is publicly traded (KNF) and operates in Manufacturing.

When did Knife River Corporation acquire Donaldson Brothers Ready Mix?

Knife River Corporation's acquisition of Donaldson Brothers Ready Mix was reported on March 23, 2026. Knife River Corporation has acquired the assets of Donaldson Brothers Ready Mix Inc. in Montana, marking its third acquisition in 2026. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.

What does Donaldson Brothers Ready Mix do?

Donaldson Brothers Ready Mix Inc. is a leading supplier of aggregates and ready-mix in the Bitterroot Valley. The company operates a ready-mix plant and has more than 30 years of supply experience from three aggregates sources. It is privately held, operating in Manufacturing, and is based in Montana.

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