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Shannon M. O'Sullivan
 

Shannon M. O'Sullivan

Partner
 
425 Lexington Avenue
New York, NY 10017 
 
Email:
Fax: +1-212-455-2502

Shannon O’Sullivan concentrates on the formation and operation of a diverse platform of private funds, including real estate funds; buyout funds; distressed debt/credit, mezzanine and senior loan funds; energy/infrastructure funds; and hedge funds, among other alternative arrangements. Shannon has represented leading sponsors of private equity funds such as Blackstone, Carlyle, GSO, Macquarie, Morgan Stanley, Oaktree, Pátria and Westbrook Partners. Shannon also serves as host and moderator of The Funds Channel, the Firm’s private funds-focused podcast series. Shannon has been involved in multiple pro bono and volunteer initiatives, including Girls on the Run and Kings County Tennis League.

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Work Highlights
  • Blackstone in the establishment of its tenth global opportunistic real estate fund, Blackstone Real Estate Partners X, which closed with a record $30.4 billion in capital commitments
  • Blackstone in a number of other fundraisings and co-investments, including the establishment of its prior global opportunistic real estate funds, Blackstone Real Estate Partners VII and Blackstone Real Estate Partners VIII; its third and fourth European real estate funds, Blackstone Real Estate Partners Europe III and Blackstone Real Estate Partners Europe IV; its U.S.-focused real estate debt fund, Blackstone Real Estate Special Situations Fund II; and its acquisition of Stuyvesant-Town Peter Cooper Village in partnership with Ivanhoe Cambridge, a subsidiary of Caisse de dépôt et placement du Québec, strategic investment in Nautic Partners, and its recapitalization of Mileway
  • The Carlyle Group in the establishment of its sixth fund dedicated to buyouts and other private equity investments in the U.S., Carlyle Partners VI
  • GSO Capital Partners in several fundraises, including the establishment of its first European direct lending fund, GSO European Senior Debt Fund; and the establishment of its first and second “capital solutions” fund, Blackstone/GSO Capital Solutions and GSO Capital Solutions Fund II, as well as numerous separately managed accounts
  • Macquarie Infrastructure and Real Assets in the formation of Macquarie Infrastructure Partners V, its sixth North American-focused unlisted infrastructure fund
  • Pátria Investments in the establishment of its fifth private equity fund, Patria-Brazilian Private Equity Fund V
  • Westbrook Partners in the establishment of Westbrook Real Estate Fund XI
Education
  • George Washington University Law School, 2005 J.D.
    with Honors
  • University of Michigan, 2002 B.A.
    with Honors
Associations
  • Women in Law Empowerment Forum (WILEF) Global Advisory Board
Admissions
  • New York 2008
  • California 2005

Shannon O’Sullivan is Partner in Simpson Thacher’s Corporate Department. Shannon focuses on the organization, structuring and operation of a wide range of private funds, including real estate funds; buyout funds; distressed debt/credit, mezzanine and senior loan funds; energy/infrastructure funds; and hedge funds. She also counsels sponsors on separately managed account arrangements, co-investment vehicles, internal economic arrangements and corporate transactions involving private investment funds. Shannon also serves as host and moderator of The Funds Channel, the Firm’s private funds-focused podcast series.

Shannon has represented leading sponsors of private equity funds such as Blackstone, Carlyle, GSO, Macquarie, Morgan Stanley, Oaktree, Pátria and Westbrook Partners.

Shannon is very involved with Girls on the Run, a non-profit organization which strives to inspires girls to be happy, healthy and confident using a creative curriculum that centers on running, and is on the board of Kings County Tennis League, a non-profit organization that serves children living in and around Brooklyn public housing, using tennis and off-court educational activities as instruments for youth development.

Shannon received her J.D., with honors, from George Washington University Law School in 2005. She received her B.A., with honors, from University of Michigan in 2002. Shannon is admitted to practice in New York and California.

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