Margaret Siller


212 390 9021

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Margaret (“Maggie”) Siller is a litigator with experience in complex structured finance, contractual disputes, student debt litigation, class actions, and constitutional law.

Maggie has represented clients in securities, complex financial products, breach of contract, and white-collar matters. She was part of the team that represented the Federal Housing Finance Agency, as conservator for Fannie Mae and Freddie Mac, against the world’s largest banks regarding losses on residential mortgage-backed securities, including as part of the trial team that obtained an $800 million judgment from Nomura and the Royal Bank of Scotland. She was also a leading member of the team that obtained a $540 million settlement from GreenPoint Mortgage Funding in a breach-of-warranty suit over $930 million in losses on an RMBS trust.

She currently represents a union and public service workers in litigation concerning the Public Service Loan Forgiveness Program, including in a class action lawsuit in the Southern District of New York against a servicer that misled borrowers and in the District of Columbia against the federal agency tasked with administering the program. In her investigations practice, Maggie helped represent BSI SA in becoming the first bank to reach a resolution under the joint US-Switzerland program regarding the liability of Swiss banks for concealing American assets in Swiss accounts.

Maggie’s public interest practice includes representing Vote Solar before the Utah Public Service Commission to determine the value of solar energy in the state’s net metering program and Cypress Creek Renewables against the Montana Public Service Commission for violating federal energy laws and preventing contracts with small renewable energy providers. As a law student, Maggie worked in the Center on Wrongful Convictions and represented an incarcerated client in parole proceedings before the Prisoner Review Board of Illinois.

Maggie earned her J.D., cum laude, from Northwestern University School of Law, where she served on the Northwestern University Law Review. She served as a judicial law clerk for the Honorable Victor Marrero of the U.S. District Court for the Southern District of New York. Prior to law school, Maggie served as a Teach For America corps member while earning her master’s degree in education.

  • Northwestern University School of Law (J.D., 2013)
    Cum laude, Order of the Coif, Northwestern University Law Review
  • University of Hawai’i at Manoa (Master of Education in Teaching, 2009)
  • Georgetown University (B.S.F.S., International Politics, 2007)
    Magna cum laude, Phi Beta Kappa, John Carroll Fellow, Krogh Scholar

Quinn Emanuel Urquhart & Sullivan, LLP
Associate, 2013-2015, 2016-2018

Law Clerk to the Hon. Victor Marrero
United States District Court for the Southern District of New York, 2015-2016

  • State Bar of New York
  • District of Columbia Bar
  • United States District Courts: Southern District of New York, Eastern District of New York, District of Columbia
  • United States Court of Appeals: Ninth Circuit