S-1

S-1 Corporation Announces Change in Transactions with Samsung C&T (0.18% of Sales)


  • S-1 Corporation disclosed a change in transactions with Samsung C&T for Q1 2026 due to a decrease of over 20% compared to the plan (disclosure date: 2026.5.15).
  • Total transaction amount: 5,205 million KRW (sales: 3,527 million, purchases: 1,678 million), representing 0.18% of S-1's total sales (2,859,677 million KRW).
  • Reason for change: actual performance variance from plan. Details include integrated security, security SI, building management, landscaping management, etc., all negotiated contracts.
  • Board resolution date and outside director attendance not disclosed. Related prior disclosure date: 2025.11.27.

KOSPI Filing Information


  • Filing: Change in Goods and Services Transactions with the Same Person and Affiliated Companies
  • Company: S-1 (012750)
  • Submission: S-1 CORPORATION
  • Receipt: 05-15-2026
  • Under Fair Trade Commission (KFTC)