Sullivan
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Biography

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.

Education
  • Harvard Law School (J.D., cum laude)
  • Harvard College (B.A., magna cum laude and phi beta kappa)
Bar & Court Admissions
  • New York
  • Massachusetts
  • U.S. Court of Appeals for the Eleventh Circuit
Awards & Honors
  • The Legal 500 U.S. (2013, 2016)
  • Ranked in The Legal 500 Boston Elite for Banking and Finance (Including Restructuring) (2026)

Duncan T. O'Brien

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.