S-1

S-1 provides security and building-management services, from alarm monitoring and on-site response teams to cybersecurity software and full-service property management, for homes, commercial buildings, and large industrial facilities across South Korea.

Its customers range from individual households to major corporations and property owners. Listed on KOSPI, South Korea's main stock exchange, the company operates two roughly equal revenue streams: a physical and digital security division, and an infrastructure division covering facility management, property management, and security system integration.