CoolSem Technologies Secures Pre-Seed Funding to Advance Wafer-Level Thermal Innovation

January 19, 2026

CoolSem Technologies, a pioneer in semiconductor thermal management, today announced the closing of its pre-seed financing round. The investment round is led by High-Tech Gründerfonds (HTGF), with participation from KBC Focus Fund NV, Brabant Development Agency (BOM), and TTT Green Tech B.V. (SHIFT Invest). Backed by this strong European syndicate of four renowned international investors, the pre-seed round ensures a solid runway.

The investment will be used to advance CoolSem Technologies’ wafer-level thermal management technology (WaLTIS®) from concept to engineering samples, validated by top-tier customers in RF, power and photonics, supporting qualification activities and real-world performance evidence.

CoolSem is offering a solution to tackle thermal bottlenecks in the semiconductor industry that has the potential to unlock new and more powerful electronic chips having higher system performance, better energy efficiency and extended device lifespans. The team builds on the profound knowledge and expertise in semiconductor chip development concentrated between the regions of Eindhoven, Leuven and Achen.

Ivana Sersic

Senior Investment Manager at the Brabant Development Agency (BOM)

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Ivana Sersic

Senior Investment Manager

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Chips are now a critical resource, with rising pressure on raw materials and significant inefficiencies in heat management. CoolSem helps to make the semiconductor industry greener by reducing energy waste, extending hardware life, and enabling the reuse of rare materials, three critical levers for a low-carbon, circular economy.