Silicon Box focuses on large-scale chiplet packaging that combines multiple smaller chips into single high-performance packages. The company emerged from stealth in 2021 and was founded by BJ Han, Sehat Sutardja, and Weili Dai, claiming unicorn status in late 2023. It has completed multiple financing rounds, including a $200 million Series B in January 2024, a $150 million Series B2, and $208 million across seed, Series A, and SAFE rounds. In 2024, Silicon Box reported $1.87 million in revenue in the first year of production at its Singapore factory from pre-qualified customers and R&D investments. The company says it intends to scale manufacturing capacity to meet rising customer demand and support customers across AI, high-performance computing, mobile devices, IoT, robotics, and space technology. Its recent S$100 million debt facility is intended to bolster the capital base while limiting shareholder dilution as it expands production.

Total raised

$378M

Funding rounds

3

Latest round

Debt Financing

Latest activity

Jun 2026