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Lee & Ko

Nelson K. AHN, Esq.

Nelson K. AHN, Esq.



  • Energy & Natural Resources
  • Financial Services & Compliance
  • Mergers & Acquisitions

WSG Practice Industries


Nelson K. Ahn, a senior partner, is focused on representing Korean and foreign businesses in a broad range of cross-border transactions. With over 25 years of extensive private and public sector working experiences in Korea and other jurisdictions (including the United States), Mr. Ahn is uniquely qualified to provide practical and business-friendly legal advice to financial and non-financial institutions on a broad range of cross-border transactions and regulatory matters.

Prior to relocating to Korea in 2007, Mr. Ahn was a partner in the M&A and Private Equity Group and Financial Institutions Practice Group at Sidley Austin LLP in New York. He was also the co-head of the Korean Practice Group at Sidley from 2001 to 2007. Prior to Sidley, Mr. Ahn was a partner in the Financial Institutions Practice Group at Winston & Strawn LLP in New York. From 2011 to 2014, he ran the “outbound” transactions practice group at Kim & Chang.

His public sector experience includes serving as a member of the Self-Regulation Committee of the Korea Financial Investment Association from 2009 to 2011. In addition, Mr. Ahn acted as Senior Counselor to Deputy Minister Kwon Oh Kyu, the Ministry of Strategy and Finance, in 2007 and Commissioner Lee Hun Je, Financial Supervisory Commission, in 2000, in which capacity he advised on matters relating to the development of the Korean financial services industry. From 1988 to 1993, he was an attorney in the Legal Department of the Federal Reserve Bank of New York, focusing on regulatory matters relating to foreign banks and securities firms operating in the United States.

Other Activities
Member, Global Insurance Forum (Korea Institute of Insurance)
Member, Global Financial Institutions (“han ryu”) Forum (Korea Institute of Finance)
Advisor, APEC Private Public Partnership Advisory Panel
Member, Self-Regulation Committee, Korea Financial Investment Association (2009.2 –2011.2)
External Counsel, EUCCK, Financial Services Committee (2009.2 – 2009.10)
Member, Management Advisory Committee, NH Bank (2008.10.-2010.10)
KAIST Graduate School of Finance (Adjunct Professor 2008-2009, Lecturer, 2010)

Boston College Law School J.D.: 1988
Columbia College, Columbia University (B.A. in Economics): 1985
London School of Economics & Political Science: 1984

Bar Admissions

United States Court of International Trade, 1990
New York Bar, 1989
Areas of Practice

Energy & Natural Resources | Financial Services & Compliance | Mergers & Acquisitions

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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