# S-Transistors raises €2.6 million for cryogenic quantum-control hardware

_Monday, August 31, 2026 at 5:00 AM EDT · Capital, Science · Latest · Tier 2 — Notable_

![S-Transistors raises €2.6 million for cryogenic quantum-control hardware — Primary](https://www.eu-startups.com/wp-content/uploads/2026/08/Untitled-design-2026-08-31T140932.888.jpg)

S-Transistors, a Finnish VTT spin-off, raised €2.6 million in pre-seed funding to develop superconducting-transistor products for cryogenic signal control, build a cryogenic laboratory and pilot manufacturing line, and expand its team. The company says its first product will be a multiplexer for existing cryogenic setups and plans to ship it to early customers and strategic partners in its first year. Its longer-term quantum-motherboard concept remains a company vision for controlling qubit processors at millikelvin temperatures.

## Sources

- [EU-Startups](https://www.eu-startups.com/2026/08/finlands-s-transistors-raises-e2-6-million-to-build-the-worlds-first-quantum-motherboard/)

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