Kostecsys (355150) Q3 2025 earnings summary

Executive summary

• Specializes in thermal management materials and advanced semiconductor packaging, focusing on SiC and GaN WBG semiconductors for high-performance applications.

• Major business areas include RF communication, power semiconductors, laser modules, and AI/data center solutions.

• Key customers are global players, with over 90% of sales from exports.

Financial highlights

• 2025 Q3 revenue: KRW 9.51 billion, down from KRW 14.21 billion in 2024 Q3.

• Operating loss for 2025 Q3: KRW -1.35 billion, compared to KRW -0.78 billion in 2024 Q3.

• Cash and cash equivalents at Q3-end: KRW 276.7 million, down from KRW 1.12 billion at 2024 year-end.

• Total assets: KRW 52.93 billion; total equity: KRW 21.57 billion as of 2025 Q3.

Outlook and guidance

• Focus on expanding global market share in high thermal conductivity materials and power module components.

• Plans to increase R&D investment and production capacity for next-generation power semiconductor solutions.