Thomas Sauermilch - McDermott Will & Emery


Thomas Sauermilch concentrates in cross-border mergers and acquisitions, joint ventures and other complex cross-border corporate/commercial transactions for major multinational corporations, private equity funds and their portfolio companies and medium-sized businesses. He also advises clients in corporate governance and compliance matters. He has led transactions in a wide range of sectors, including aerospace and avionics, automotive industries, chemicals, energy, engineering, food and beverage, manufacturing, media, medical devices and scientific instruments, metals and natural resources, packaging, pharmaceuticals, semiconductor equipment, software, technology and trading in North and South America, Europe and Asia. He has been recognized over many years by leading legal directories and nominated as Lawyer of the Year by The Deal (2018) and Dealmaker of the Year by M&A Advisor (2017). He has also been recognized as a BTI Client Service All-Star 2020 (BTI Consulting Group) and led the McDermott teams winning both the 2020 M&A Advisor Deal of the Year Awards in two categories (Cross-Border Deal of the Year and Materials Deal of the Year; $500million to $1billion) for Evonik Industries’ acquisition of PeroxyChem and the 2021 M&A Advisor Award for M&A Deal of the Year ($500million to $1billion) for Kaiser Aluminum’s acquisition of Alcoa Warrick. Thomas has held various leadership positions in the Firm, including former chair of its global M&A Practice and its Global Industrials Practice as well as a former member of the Firm’s Corporate Practice Leadership Team and its Management Committee.

To read Thomas’ full biography in Japanese please click here.

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  • Represented a leading specialty chemicals company in its $3.8 billion acquisition of a worldwide specialty and additives business, its $1.6 billion acquisition of pharmaceutical manufacturing operations and strategic alliance with a major US based pharmaceutical company, its $2 billion acquisition of the worldwide personal care business of and strategic alliance with a leading US chemicals company, its $640 million acquisition of a worldwide specialty chemicals business and numerous other acquisitions, divestitures and joint ventures
  • Represented a leading European privately-owned petrochemicals company in its acquisition of a global copolymer business from a leading US petrochemicals company and a South Korean industrials group
  • Represented a US metals mining company in the $700 million sale to a publicly listed Canadian mining company and related equity offering and debt financing and subsequent $650 million acquisition of a Canadian mining company and related $300 million gold streaming agreement

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  • Thomson Reuters, Stand-out Lawyer – independently rated lawyers, 2022-2023
  • M&A Advisor Awards, M&A Deal of the Year ($500 MM – $1B), 2021
  • M&A Advisor Awards, Cross Border Deal of the Year; Materials Deal of the Year ($500 MM – $1B), 2020
  • BTI Client Service All-Star, 2020

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  • American Bar Association
  • American Council on Germany
  • International Bar Association


Fordham University School of Law, JD, 1988
Fletcher School of Law and Diplomacy, MALD, 1985
Indiana University Maurer School of Law, LLM, 1981
University of Kiel, Staatsexamen, 1983

New York