ABB to Acquire Flow Control Specialist Rotork for $5.5B

ABB has agreed to acquire Rotork plc, a British manufacturer of intelligent flow control solutions and electric actuators, in a transaction valued at approximately $5.5 billion. The deal represents a 60 percent premium over Rotork's three-month average share price and is structured to pay 503 pence in cash per share.

The acquisition targets a strategic gap in ABB's automation portfolio by adding field-device layer capabilities that complement its existing control systems. Rotork specializes in mission-critical applications across oil and gas, chemicals, process industries, data centers, and water and power infrastructure.

Why it matters

This acquisition signals ABB's push toward higher-margin automation products and recurring service revenue. By integrating intelligent field devices that continuously monitor industrial processes, ABB can offer more complete automation loops from sensors to control systems. The move also positions ABB to compete more effectively in lifecycle services—a growing revenue stream as industrial customers prioritize asset optimization over new capital expenditures.

Financial and operational profile

Rotork generated approximately $1 billion in revenue during 2025 with an adjusted operating profit margin of 24.6 percent. The company has demonstrated consistent growth, recording an average annual organic revenue increase of 8 percent from 2022 to 2025.

The transaction is expected to add roughly 3 percent to ABB's total revenues and 12 percent to its Automation business area specifically. ABB anticipates the deal will be immediately accretive to operating margins in both the overall company and the Automation division.

Integration approach

Upon closing, Rotork will operate as a separate division within ABB's Automation business area under what ABB describes as a "strategic growth mandate." This structure aligns with ABB's decentralized operating model, which emphasizes local accountability and decision-making speed.

ABB plans to leverage its global service network and digital platforms to accelerate Rotork's development of intelligent device diagnostics and asset management solutions. The combination is intended to expand Rotork's installed-base service model and create additional lifecycle revenue opportunities through ABB's established customer relationships.

ABB has stated it has no current plans to significantly alter Rotork's UK operations, which will remain an important manufacturing and technology base.

Transaction timeline

The deal will be implemented through a court-sanctioned scheme of arrangement under UK law. Rotork's board has unanimously approved the transaction and will recommend shareholder approval at an upcoming meeting.

Subject to shareholder vote and regulatory approvals, the transaction is expected to close in the first half of 2027.

Details of the acquisition were first reported by Automation Watch.