• Company
    • Company Status
    • Global
    • CEO Message
    • History
    • S-OIL CI
  • Sustainability
    • 7 Strategic imperatives
    • Enhance Customer-Centric Management
    • Provide Best-in-Class Work Environment
    • Achieve Operational Excellence
    • Contribute to Society
    • Pursue Global Best Practices of
    • Attain Highest Level of Capital Efficiency
    • Develop Platform for Sustainable Growth
    • Sustainability Report
  • Business
    • Outline of Business Lines
    • Oil Refining Business
    • Lube Oil Business
      • About us
      • Base Oil Basics
      • lubricants
      • About STLS
    • Petrochemical Business
    • Line R&D
      • S-OIL R&D Center
      • Research into Production Technologies
      • Research into Refined Oil Products
      • Research into Lube Oil Products
      • Analysis lf Samples and Additives
    • Global
  • Investor Relations
    • Outline of Investor Relations
    • Corporate Governance
      • Corporate governance assessment
      • Current status of Board of Directors(BOD)
      • Ownership Structure
      • Affiliated Companies
    • Stock Information
      • Current price
      • Every Hour Interval
      • Histofical Prices
      • Foreign ratio
      • Technical Analysis
    • Financial Information
      • Financial Highlights
      • Financial Statements
      • Dividend
      • Credit Rating
    • IR Event
    • IR Library
      • IR Presentation
      • Earnings Conference Call
      • Audit Report
    • disclosure
  • CSR Activities
    • Introduction of CSR
      • CSR Vision
      • CSR History
    • CSR Programs
    • Public Service Corps
  • PR Room
    • Press Center
    • TV CF
    • PR Movie

Affiliated Companies

Investor RelationsCorporate Governance
Affiliated Companies

Affiliated company

S-OIL Total Lubricants Co.,Ltd.
  • S-OIL Total Lubricants Co., Ltd. is an unlisted company specialized in lubricants.
    The company sells lubricants at home and abroad by producing finished lubricant products out of the
    base material, lubricant base oil, supplied by S-OIL.
  • S-OIL newly acquired 50%+1 shares of S-OIL Total Lubricants Co., Ltd. according to the Joint Venture
    contract with TOTAL Raffinage Marketing S.A. on May 8, 2008.


S-International Ltd.
  • S-International Ltd. was established under the nationality of Liberia on Oct. 30, 1987 to support the
    import of crude oil and changed its registered address to the Independent State of Samoa on Feb. 9,
    2011. Currently, S-OIL has a 100% stake.

S-International Ltd.

Mutual ownership relations among affiliates

S-OIL Total Lubricants S-International
Type of investment Joint Venture Subsidiary company
Share 50% +1 100%

On April 1, 2009, the Korea Fair Trade Commission designated S-OIL and S-OIL Total Lubricants Co.,  Ltd. as Business Group subject to Limitations on Cross-shareholding. Accordingly, based on relevant  laws and regulations such as Fair Trade Act, S-OIL has been complying with the followings.

  • Ban on cross-shareholding among affiliates (Fair Trade Act Article 9 Clause 1)
  • Prohibition of Provision of Guarantee for Korean Affiliate's Debt (Fair Trade Act Article 10 Clause 2)
  • Duty to report stock ownership and debt guarantee status (Fair Trade Act Article 13)


  • The IR section of this Web site contains forward-looking statements that are based on our current expectation, assumptions, estimates and projections about S-OIL and the refinery industry. We caution you not to place undue reliance on any forward-looking statement which may involve various risks and uncertainties.
  • Please also note that although we believe that the assumptions on which our forward-looking statements are based on reasonable, any of those assumptions could prove to be inaccurate, and, as a result, the forward-looking statements based on those assumptions could be incorrect. Except as required by law, we do not undertake to release the results of any revisions of these forward-looking statements to reflect future events or circumstances.


  1. Stock  Information

    • Current price
    • Every Hour Interval
    • Histofical Prices
    • Foreign ratio
    • Technical Analysis
  2. Investor  Relations

    • IR Event
    • IR Presentation
    • Eamings Conference Call
    • Audit Report
    • Credit rating
  3. Corporate  Governance

    • Corporate structure assessment results
    • Affiliated companies
  4. Sustainability

    • 7 Strategic imperatives
    • Pursue Global Best Practices of Corporate Governance


  1. Company

    • History
    • Global Competitiveness
  2. Business

    • Oil Refining Business
    • Basics of Lube Base Oil
    • MSDS
    • S-OIL R&D Center
    • Research into Production Technologies
    • Overseas market
  3. Sustainability

    • 7 Strategic imperatives
    • Develop Platform for Sustainable Growth


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