Department profile
Simpson Thacher & Bartlett LLP

Corporate/M&A: The Elite

USA Guide 2026 : Texas


Simpson Thacher & Bartlett LLP

Rankings

Chambers Review

Provided by Chambers

Corporate/M&A: The Elite - Texas

Band 5

Band 5


What the Team is Known For
Simpson Thacher & Bartlett LLP is sought out by clients for a range of corporate transactions. The firm is particularly adept at handling complex M&A within the oil and gas space. The team has notable experience acting on behalf of private equity funds, as well as both private and public companies.

Work Highlights

Provided by Chambers

  • Simpson Thacher & Bartlett represented KKR and Public Sector Pension Investment Board in an acquisition of 19.9% interest in American Electric Powe's Ohio and Indiana & Michigan transmission companies for $2.8 billion.

Strengths

Provided by Chambers

  • They are commercially-minded business advocates who understand complex financial transactions.

    Corporate/M&A: The Elite respondentUSA
  • The team is incredibly thoughtful. They really put themselves in the mindset of the business principal and practically think about how the words on the page will come to life.

    Corporate/M&A: The Elite respondentUSA
  • The bench is impressive top to bottom.

    Corporate/M&A: The Elite respondentUSA

Notable Practitioners

Provided by Chambers

  • Band 1Christopher R May
    Band 1Christopher R May

    Christopher R May

    Christopher May is a partner in the firm's Houston office. He is recognized for his sterling private equity practice, particularly as it pertains to deals in the energy space.
    • Chris is always someone who is ready and willing to pick up the phone and talk through a curve-ball issue.

      Corporate/M&A: The Elite respondentUSA
  • Band 2M. Breen Haire
    Band 2M. Breen Haire

    M. Breen Haire

    Breen Haire demonstrates capabilities across a range of corporate transactions, most notably in sophisticated M&A. He typically acts within the energy sector.
    • Breen has an incredibly cool head and very careful in thinking through details. He is very thoughtful.

      Corporate/M&A: The Elite respondentUSA
    • He is a super smart guy.

      Corporate/M&A: The Elite respondentUSA
  • Band 2Shamus M Crosby
    Band 2Shamus M Crosby

    Shamus M Crosby

    Shamus Crosby acts for a number of significant private equity clients. He has particular expertise in the infrastructure and energy spaces.

  • Band 3Katy Lukaszewski
    Band 3Katy Lukaszewski

    Katy Lukaszewski

    Katy Lukaszewski acts for private equity firms, their portfolio companies, and corporate clients in a range of significant transactions. She is especially active in energy and infrastructure.

Ranked Individuals at Simpson Thacher & Bartlett LLP (5)

Texas

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