ABB to Acquire Rotork for $5.5 Billion, Expanding Electrification and Automation Capabilities

Rotork shareholders will receive an interim dividend of up to 3 pence per Rotork share for the period to June 30, with no reduction to the offer value.
Rotork will be run as a separate division under ABB’s decentralized 'ABB Way' model, with its UK footprint and leadership team retained to support the enlarged product portfolio.
Rotork’s recent financials show around $1 billion in revenue for 2025 and an adjusted operating margin of 24.6%, with about 8% average annual organic revenue growth from 2022 to 2025.
ABB plans to invest about $200 million to expand its European medium-voltage manufacturing capabilities and to emphasize grid-stabilization and data-center power technologies as part of the deal’s broader push in electrification and automation.
The deal values Rotork at roughly $5.5 billion in enterprise value, with an EV/Sales multiple around 5.3x (based on 2025 actuals), underscoring the strategic scale of ABB’s automation push.
ABB has agreed to buy British flow-control maker Rotork for roughly $5.5 billion in cash, paying 503 pence per share — a premium of about 60% over Rotork's recent average share price, according to MarketScreener. The deal is ABB's biggest push yet to expand its electrification and automation businesses.
Rotork's board unanimously recommended the offer. The transaction is expected to close in the first half of 2027, pending shareholder approval and regulatory sign-off, Morningstar reported.
ABB will pay 503 pence per Rotork share in an all-cash deal. That values Rotork at roughly £4.08 billion on an enterprise basis, according to MarketScreener UK. Rotork shareholders will also receive an interim dividend of up to 3 pence per share for the period ending June 30, with no cut to the headline offer price.
The deal carries an enterprise value-to-sales multiple of about 5.3 times, based on Rotork's 2025 revenues of around $1 billion. Rotork also posted an adjusted operating margin of 24.6% and averaged 8% annual organic revenue growth from 2022 to 2025 — numbers that made it an attractive target, Morningstar noted.
ABB will run Rotork as a separate division inside its Automation business. The Swiss company says it will keep Rotork's UK base and its existing leadership team in place. That fits ABB's 'ABB Way' operating model, which gives business units a high degree of independence.
ABB expects Rotork to add about 3% to group revenues and to immediately lift its operating margin. The deal broadens ABB's product range in large-scale infrastructure and lifecycle services — areas where Rotork's flow-control technology is widely used in energy, water, and industrial plants, according to Investing.com.
Beyond the Rotork purchase, ABB plans to invest about $200 million to expand its European medium-voltage manufacturing capacity. The money will go toward grid-stabilization technology and power systems for data centers — two fast-growing markets as electricity demand surges across Europe.
The moves come as ABB reported record quarterly orders alongside the deal announcement. The company said it will finance the Rotork acquisition from its existing cash reserves, with no new debt needed, Investing.com reported.
The ABB-Rotork deal is part of a broader trend. Overseas buyers have been snapping up UK-listed companies at a rapid pace, drawn by relatively low valuations on the London Stock Exchange. Rotork's shares had lagged behind peers before the bid, making the 60% premium even more striking.
The acquisition is one of the largest foreign takeovers of a UK industrial firm in recent years. It underscores growing global appetite for automation and electrification assets as companies race to upgrade aging infrastructure and meet rising power demand, according to MarketScreener.
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