Didem Nisanci

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+1 202 370 0391 direct
Washington, DC

Previous Experience

  • Chief of Staff, U.S. Securities and Exchange Commission
  • Lead Confirmation Adviser to Treasury Secretary Nominee Timothy Geithner                
  • Staff Director, Subcommittee on Securities, Insurance, and Investment, U.S. Senate Committee Banking, Housing and Urban Affairs  
  • Legislative Assistant, U.S. Senate, Office of Sen. Jack Reed
  • Deputy to the Assistant Secretary, U.S. Department of the Treasury, Office of Legislative Affairs & Public Liaison 
  • Special Assistant, U.S. Department of State, Bureau of Legislative Affairs

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Didem Nisanci

Managing Director

Didem provides a wide range of financial and regulatory advisory services to Promontory clients and has significant experience overseeing broad initiatives regarding policy, legislation, and other strategic issues. She has extensive knowledge of how policy and regulatory matters affect the capital markets industries.


Didem served for four years as the chief of staff of the U.S. Securities and Exchange Commission. In that role she was the lead adviser to Chairman Mary Schapiro on all issues involving the SEC, including policy, legislative, strategy, and communication matters. During her tenure as chief of staff, Didem also served as the SEC deputy to the Financial Stability Oversight Council and primary liaison with the Treasury Department, the White House, the Federal Reserve, Federal Deposit Insurance Corp., Commodity Futures Trading Commission, and other financial regulators. Prior to the SEC, she was the lead adviser to Treasury Secretary Nominee Timothy Geithner after having been staff director for the U.S. Senate Committee on Banking, Housing and Urban Affairs subcommittee on Securities, Insurance and Investment. She managed all aspects of the subcommittee, including the development and implementation of its legislative and oversight agenda during the financial crisis. Earlier in her career, Didem served as legislative assistant to U.S. Sen. Jack Reed and held positions within the Department of the Treasury Office of Legislative Affairs & Public Liaison and the U.S. Department of State, Bureau of Legislative Affairs.


  • B.A., economics and government, Smith College

Affiliations, Awards, and Civic Engagements

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