bp Completes Castrol Stake Sale for $6 Billion
bp sold 65% of Castrol to Stonepeak and will retain a 35% equity stake in the lubricants business.
Updated on Nov. 2, 2026 in Oil and Gas
bp has completed the sale of a 65% stake in Castrol to Stonepeak, generating $6 billion in after-tax proceeds. The transaction covers minority interests in India, Vietnam, Saudi Arabia and Thailand, and bp retains the remaining 35% stake.
Why it matters
bp intends to use the proceeds to further reduce its financial obligations as part of its priority to strengthen its balance sheet. The deal reshapes bp's ownership of one of its best-known brands, with Castrol now operating as a standalone company.
The $6 billion in after-tax proceeds compares with about $100 million in average annual net income from Castrol's non-controlling interests over 2019 to 2025, and the sale includes roughly $800 million in prepaid expected dividend income from the retained stake. bp has not indicated how it will value or time any future disposal of its remaining 35% interest.
The players
bp
bp is a British multinational oil and gas company that owns the Castrol lubricants brand.
Stonepeak
Stonepeak is an infrastructure and real assets investment firm with approximately $98 billion in assets under management.
The details
The sale to Stonepeak, a firm with approximately $98 billion in assets under management, closed on November 2, 2026. Castrol, which has more than 6,000 employees and operates in over 150 countries, will run as a standalone business with its own management, governance and strategic priorities.
Timeline
November 2, 2026: bp completes the sale of its 65% Castrol stake to Stonepeak.
Two years after completion: a lock-up period ends, giving bp the option to sell its remaining 35% interest.
Market Landscape
The Castrol sale extends bp's use of asset disposals to reduce its financial obligations as part of a stated priority to strengthen its balance sheet. Selling a majority stake while keeping a minority position positions bp to capture future value from the lubricants brand without carrying its full operating weight.
For drivers and fleet operators who buy Castrol motor oils and lubricants, the sale does not by itself change product formulations or availability disclosed in the announcement. Castrol's standalone governance means its pricing and product decisions will now be made independently of bp.
The takeaway
Ownership changes like this can reshape a brand's strategy without changing its daily presence, so readers should watch for shifts in Castrol's product direction as it operates independently. bp's remaining 35% stake means it still has a financial link to the brand's future performance.
Further reading
Explore more Oil and Gas coverage for context on how energy companies are reshaping their portfolios.
