Duncan is co-leader of Sullivan's Finance Practice Group in the Corporate Department. Duncan concentrates in asset and mortgage securitization, structured financing, asset-based financing and secured and unsecured financing transactions. His asset and mortgage securitization practice includes representation of issuers, credit enhancers, liquidity banks, underwriters and purchasers in domestic and cross border transactions involving a wide variety of assets. Duncan has experience in derivatives transactions, joint ventures and project finance.

Representative Client Work

  • Counsel to institutional purchasers, multi-seller commercial paper conduit purchasers, investment banks and issuers in connection with asset backed securities involving numerous types of assets, including mortgages, credit card receivables, trade receivables, automobile loans and leases, personal loans, future flows, insurance premium loans, tax refund loans, student loans, cell towers and manufactured housing loans
  • Counsel to major European banks in formation of bank-administered commercial paper conduits
  • Representation of financial institutions providing credit and liquidity enhancements and hedges, including purchase, cash collateral and loan commitments, currency, credit default, total return and interest rate swaps and letters of credit
  • Counsel to borrower and lenders in connection with multi-currency secured and unsecured credit facilities

Bar & Court Admissions

  • New York
  • Massachusetts
  • U.S. Court of Appeals for the Eleventh Circuit


  • J.D., cum laude, Harvard Law School
  • B.A., magna cum laudePhi Beta Kappa, Harvard College

Community Engagement

  • Boston Bar Association
  • Association of the Bar of the City of New York
  • Board of Directors, Wellesley Friendly Aid Association

Awards & Honors

  • The Legal 500 U.S. (2013, 2016)

Seminars & Presentations



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