Transocean Ltd. has signed a definitive agreement to acquire rival offshore driller Valaris Limited in an all-stock transaction valued at roughly $5.8 billion, combining two of the industry’s most modern offshore rig fleets into a single global operator. The merged company will have an enterprise value of about $17 billion and an estimated market capitalization of $12.3 billion on a pro forma basis.

Under the terms of the deal, Valaris shareholders will receive 15.235 shares of Transocean for each Valaris share. Following completion, Transocean shareholders will own approximately 53% of the combined company, with Valaris shareholders holding the remaining 47%. The transaction is expected to close in the second half of 2026, subject to regulatory and shareholder approvals.

The merger creates what the companies describe as the world’s highest-quality offshore drilling fleet, comprising 73 rigs across all major offshore segments. This includes 33 ultra-deepwater drillships, nine semisubmersibles, and 31 modern jackups, giving the combined company exposure to deepwater, harsh-environment, and shallow-water markets.

Management says the expanded fleet will improve customer access across the most active offshore basins, from the U.S. Gulf of Mexico and Brazil to West Africa, the Middle East, and the North Sea, at a time when offshore investment is gaining momentum after years of underinvestment.

The combined backlog is estimated at approximately $10 billion, strengthening cash flow visibility as operators increasingly favor long-cycle offshore projects to replace declining production and improve supply security.

Transocean expects to unlock more than $200 million in identified cost synergies from the transaction, on top of an existing cost-reduction program targeting over $250 million in cumulative savings through 2026. The company says the deal will increase cash flow, accelerate deleveraging, and enhance financial flexibility, with a targeted leverage ratio of around 1.5x within two years of closing.

Beyond cost savings, management highlighted improved trading liquidity and a stronger capital markets profile, potentially expanding the combined company’s investor base and eligibility for additional equity indices.

The combined company will be led by Transocean President and CEO Keelan Adamson, with current Transocean CEO Jeremy Thigpen serving as Executive Chairman of the Board. The board will include nine Transocean directors and two Valaris directors. Transocean will remain incorporated in Switzerland, with its primary administrative office in Houston.

The transaction will be executed via a court-approved scheme of arrangement under Bermuda law and has been unanimously approved by both boards. Key shareholders on both sides have agreed to vote in favor of the deal.

The merger reflects a broader consolidation trend in the offshore drilling sector as contractors seek scale, pricing power, and operational efficiency amid a tightening supply of high-specification rigs. After years of bankruptcies and restructuring following the 2014 oil price collapse, offshore drillers are now benefiting from rising dayrates and increased contract durations as oil companies return to offshore developments.

By combining Transocean’s deepwater and harsh-environment strengths with Valaris’ jackup expertise, the merged company aims to position itself as a full-spectrum offshore contractor capable of operating in any water depth or offshore environment.

By Charles Kennedy for Oilprice.com

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