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Michael E. Mariani

Partner, Corporate

Michael E. Mariani is a partner in Cravath’s Corporate Department. His practice focuses on representing companies and major investment banks in a variety of public and private financing transactions, including initial public offerings, investment grade, high‑yield and convertible debt offerings, and acquisition financing transactions. Mr. Mariani also advises clients on public disclosure and corporate governance matters, as well as mergers and acquisitions.

Mr. Mariani’s corporate clients have included Crown Castle, CyrusOne, Evolent Health, IBM, Johnson & Johnson, Time Warner, Unilever, Weyerhaeuser and Xerox.

Mr. Mariani’s notable financing transactions include:

  • IPOs for Blue Capital Reinsurance and Diplomat Pharmacy, and other equity offerings for Crown Castle, CyrusOne, JPMorgan Chase, Lazard, Sabra Health Care REIT and Toll Brothers;
  • High‑yield debt offerings for Boyne, Chesapeake Energy, Credit Acceptance, CyrusOne, Denbury Resources, goeasy, Greif, LYCRA, Murphy Oil USA, Neiman Marcus, TerraForm Global, TerraForm Power and Time Inc.;
  • Convertible debt offerings for DHT Holdings and Evolent Health; and
  • Investment grade debt offerings for IBM, JPMorgan Chase, Mars, Time Warner and Toll Brothers.

Mr. Mariani’s notable M&A transactions include representing:

  • Crown Castle in its $7.1 billion acquisition of Lightower, its $600 million acquisition of Wilcon Holdings and the $1.6 billion sale of its Australian operations to Macquarie Infrastructure and Real Assets;
  • Johnson & Johnson in its $30 billion acquisition of Actelion;
  • Xerox in its spin-off of Conduent and settlement agreements with Carl Icahn;
  • IBM in its acquisitions of Bluewolf and Resilient Systems;
  • Weyerhaeuser in its $23 billion merger with Plum Creek Timber;
  • Cigna in its proposed $54.2 billion merger with Anthem; and
  • Time Warner in its spin off of AOL.

Mr. Mariani has been recognized for his work in capital markets and fintech by The Legal 500 and for his work in mergers and acquisitions and capital markets by IFLR1000.

Mr. Mariani was born in Shrewsbury, Massachusetts. He received his B.A. summa cum laude from Tufts University in 2004, where he was elected to Phi Beta Kappa, his J.D. from Columbia Law School in 2009, where he was an Articles Editor of the Business Law Review and a Stone Scholar, and his M.B.A. from Columbia Business School in 2009. Mr. Mariani joined Cravath in 2009 and became a partner in 2018.

Mr. Mariani may be reached by phone at +1‑212-474-1007 or by email at

Mr. Mariani is admitted only in New York.

+1 (212) 474-1007
+1 (212) 474-3700