Sung-Jin Kim Partner
  • TEL 82 2 6182 8335
  • FAX 82 2 6003 7835
  • E-MAIL
Sung-Jin Kim is a partner at Yoon & Yang LLC and his main practice areas include M&A, private equity funds, domestic and overseas investment, corporate law, financial laws, and healthcare.
Mr. Kim has extensive experience of handling M&A cases for various industries including IT, finance, manufacturing and healthcare, and advises numerous companies at home and abroad based on such experiences. Mr. Kim also provides broad legal consultations on diverse types of transactions involving private equity funds, e.g., M&As, mezzanine investment, and equity investment, etc. He has represented domestic and foreign companies and advised them on international M&As, establishment of JV, and investment dealings. He also offers specialized legal services regarding corporate governance, transition to holding company, management rights disputes, IPO, acquisition financing, and regulations on finance or listing, etc.


  • 2014-present Yoon & Yang LLC
  • 2003-14 Yulchon LLC
  • 2008 Fulbright & Jaworski LLP (U.S.)


  • 2008 University of Southern California, LL.M.
  • 2003 Judicial Research and Training Institute
  • 1996 Yonsei University College of Law, LL.B

Representative Matters

    • Advised IMM Private Equity on acquisition of Hanssem
    • Advised Korean Air on acquisition of Asiana Airlines
    • Advised on establishment of JV between SK E&S and Plug Power (U.S.)
    • Advised Bucket Place on acquisition of Hipvan (Singapore)
    • Advised Naver Webtoon and Premier Private Equity on acquisition of Munpia
    • Advised SK Ecoplant on acquisition of Saehan Environment and Green Energy
    • Advised Premier Private Equity, etc. on acquisition of Mega Coffee
    • Advised Alchemist Private Equity on acquisition of SK TNS
    • Advised Korea Development Bank on equity investment in Hanjin KAL
    • Advised Hanwha Life on spin-off of Hanwha Life Financial Services
    • Advised on Korean Air’s sale of in-flight catering/retail business to Hahn & Company Private Equity
    • Advised SKS Private Equity and Kiwoom on investment in One Store
    • Advised on Soulbrain on transition to holding company
    • Advised SKS Private Equity and Mirae Asset Venture on investment in Wavve
    • Advised Clearwater Capital Partners on its sale of Aerix to Keystone Private Equity
    • Advised Cha Healthcare on acquisition of SMG (a listed company in Singapore)
    • Advised Ace Private Equity on sale of Daeho Technology
    • Advised SPC Group on merger of five companies
    • Advised SC Private Equity on sale of five companies including Sunwoo MT
    • Advised Cha Hospital Group on acquisition of CFC (Australia)
    • Advised Hyundai Materials on acquisition of Mando Advanced Materials
    • Advised on the sale of Happy Call (kitchen appliance company) to East Bridge and Goldman Sachs
    • Advised AP System on transition to holding company and promotion of investment from private equity funds
    • Advised on Dongbu CNI’s split-off and a private equity fund’s acquisition of FIS System
    • Advised Dongwon Group on acquisition of Geumcheon
    • Advised GE Group on international restructuring
    • Advised Ildong Pharma on transition to holding company
    • Advised POSCO Energy on promotion of RCPS investment from Mirae Asset Daewoo, etc.
    • Advised on Hyundai Motor Group’s securing 100% stake in Hyundai Kefico and on Hyundai Kefico’s business transfer to Bosch Korea
    • Advised on establishment JV between Donga Socio Holdings and Meiji Group (Japan)


  • Leading Individual, Corporate/M&A, Chambers and Partners Asia-Pacific (2020-2023)
  • Leading Individual, Corporate/M&A, Chambers and Partners Global (2021-2023)
  • Highly Regarded, M&A, IFLR1000 (2020-2023)
  • Distinguished Practitioner, Corporate and M&A, asialaw (2020-2023/24)
  • Outstanding Lawyer, Corporate and M&A, asialaw Client Service Excellence (2021)


    • Establishment of investor-owned medical institutions in South Korea (co-author), 2015
    • Practical Issues concerning Regulations on Financial Institutions (co-author), 2013
    • Study on U.S. Class Actions on Securities and Their Implications I and II (co-author), 2005
    • Legal Issues concerning Breach of Obligation to Report Mass Holding of Stocks, etc. (co-author), 2004