Stonepeak acquired Castrol, with BP selling a 65% shareholding in the UK-based engine oils and industrial fluids company for an enterprise value of $10.1 billion.

AcquirerTargetValue (Enterprise)TypeClosing Date
StonepeakCastrol$10.1BAcquisition24 Dec 2025
The deal, valued at $6.6 billion for a majority stake, positions Stonepeak to enhance its market presence in engine oils and industrial fluids, leveraging Castrol's established brand and technological expertise.

Strategic Rationale

The acquisition enables Stonepeak to expand its footprint in the energy sector, particularly within the growing demand for high-performance lubricants. Castrol's robust portfolio of products complements Stonepeak’s existing investments, solidifying their position as a leading player in specialized industrial fluids.

BP's decision to divest Castrol aligns with its strategic focus on core upstream and downstream oil and gas operations while maintaining strong partnerships that benefit both companies' future growth objectives.

Financial Context

The deal was struck at an enterprise value multiple of 8.6 times the target company's last twelve months (LTM) EBITDA, indicating a premium valuation in line with Castrol’s strategic importance and market leadership position.

Castrol reported strong financial performance leading up to the sale announcement, which likely contributed to BP’s decision to monetize its equity stake at this time. The transaction is expected to be accretive for Stonepeak in terms of earnings per share once integrated.

Advisors

The deal mechanics remain undisclosed regarding legal and financial advisors on both sides, as neither buy-side nor sell-side counsel has been revealed publicly. This lack of transparency may suggest a close-knit relationship between the parties or a desire to maintain confidentiality over strategic plans.

While details around the advisory teams have yet to be disclosed, industry analysts speculate that leading firms from both jurisdictions are likely involved given the deal's significance and complexity.

Outlook

The acquisition sets the stage for further consolidation within the energy and industrial fluids market as companies like Stonepeak seek out strategic partners with strong technology and brand positioning. This move is expected to drive innovation and efficiency, benefiting both parties and their respective client bases in an increasingly competitive landscape.