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S-1 (012750) Q4 2025 earnings summary

Event summary combining transcript, slides, and related documents.

Logotype for S-1 Corporation

Q4 2025 earnings summary

30 Jan, 2026

Executive summary

  • Achieved 2.7% year-over-year sales growth in 4Q25, with balanced expansion across Security and Infra segments.

  • Operating profit for 4Q25 rose 16.5% year-over-year, with an operating profit margin of 7.1%.

  • FY25 revenue reached KRW 28,894 billion, up 3.0% year-over-year, maintaining a 5.7% CAGR since 2021.

Financial highlights

  • 4Q25 sales: KRW 7,839 billion; operating profit: KRW 558 billion; net profit: KRW 362 billion.

  • FY25 operating profit: KRW 2,346 billion (12.1% YoY increase); net profit: KRW 1,786 billion (1.1% YoY increase).

  • Gross profit margin for FY25: 23.5%; operating margin: 8.1%; EBITDA margin: 14.1%.

Outlook and guidance

  • Profitability initiatives supported margin recovery to the 8% range in FY25.

  • Revenue growth momentum expected to continue, driven by new contracts and expanded management scope.

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