SILICON INTEGRATED SYSTEM Business Summary

Silicon Integrated Systems Corp. (SiS) is a Taiwan-based fabless semiconductor company that generates revenue through the design, development, and global distribution of integrated circuits (ICs) and customized System-on-Chip (SoC) solutions. The company’s primary business segments include human-interface technologies, such as projected capacitive touch controllers and active pen controllers, as well as multimedia graphics chips, MEMS microphones for AI-driven voice recognition, and battery management ICs. Following its January 2025 acquisition of Hycon Technology, SiS has significantly expanded its footprint in the microcontroller and power management markets. Within the competitive landscape, SiS maintains a specialized market position relative to larger peers like PixArt Imaging, Myson Century, and Niko Semiconductor, focusing on high-integration, cost-effective silicon solutions for the consumer electronics, automotive, and industrial sectors. Founded in 1987 by a core engineering team including Hwa Huang and Chih-Kang Wang, SiS is currently led by Chairman Stan Hung, who concurrently serves as the Chairman of United Microelectronics Corporation (UMC). The executive leadership team is anchored by CEO and President Le-Tien Jung, a former Vice President at UMC who assumed the role in August 2023 to spearhead the company’s operational transformation. Other key executives include Chief Strategy Officer Cheng-Chien Chien and CFO Wen Huang Po. The company’s strategic direction is heavily influenced by its primary institutional investor, UMC, which holds an approximate 18% stake and provides critical foundry support and board-level oversight, positioning SiS as a key satellite entity within the broader UMC ecosystem.