Three Deep-Tech Startups Raise Fresh Capital Across US and Europe

Fortastra, a space technology company based in Torrance, California, raised $30 million in Series A funding led by First In, Ventureburn reported. Upfront Ventures, Space Capital, Rsquared, Side Door Ventures, ATX Ventures and existing investors also participated. The company builds maneuverable spacecraft for on-orbit security and national defence, positioning satellites near key orbital assets to monitor and respond to potential threats. Its platform combines autonomy with a modular design intended for faster production and broader mission flexibility. Founder and CEO Mike Smayda leads the company, which has launched its Watchdog V0 platform and secured initial government contracts. The funding will support engineering and manufacturing expansion.

Sava Technologies, a London-based health technology company, raised a Series B round of €32.08 million ($36 million), EU-Startups reported. The round was led by Ascensia, with participation from Balderton Capital, Norrsken VC, Simplyhealth Ventures, JamJar Investments, Pentland Ventures and others. Sava develops a wearable biosensor platform that detects molecules just beneath the skin, and the funding is intended for manufacturing scale-up and commercial readiness. The company also appointed Ascensia, a subsidiary of PHC Holdings Corporation (TYO 6523), as its commercialisation and distribution partner, initially in Europe. Founded in 2019 by Imperial College London bioengineers Renato Circi and Rafaël Michali, Sava emerged from stealth in June 2024 and raised a €16.6 million Series A in July 2025. Its total funding now stands at €60.6 million ($68 million). EU-Startups quoted co-founder and Co-CEO Renato Circi as saying that continuous monitoring has long been held back by legacy technology and that this is about to change.

The early-stage venture firm has reached a €13 million first close toward a €26 million target, with five investments already made.