European and US Startups Raise Millions Across AI, Defence and CleanTech

British-German defence company Hypersonica secured €100 million in Series B funding co-led by Lightspeed and General Catalyst, with continued participation from existing investors Plural and 201 Ventures. Founded in 2023 and led by co-founders Dr. Philipp Kerth and Dr. Marc Ewenz, the firm develops sovereign hypersonic deep-strike systems for Europe and its allies, with engineering teams at its Munich headquarters and a wholly-owned London subsidiary. The company says its technology operates without ITAR restrictions and is developed entirely within Europe. Since its €23.3 million Series A in February 2026, Hypersonica has tested its HS-1 prototype at speeds above Mach 5. Lightspeed partner Alexander Schmitt said the firm is redefining how advanced defence capability gets built, according to EU-Startups.

London-based LO:TECH raised $12 million in a Series A round led by MMC, with participation from existing investors Faction and 13 Books Capital, alongside Atka. Founded by CEO Tim Meggs and CTO Marcus Horsley, the firm builds trading infrastructure designed to operate continuously across traditional financial markets, digital assets and prediction markets. The company has launched execution services aimed at helping institutional clients trade across both conventional and around-the-clock onchain venues.

Estonian startup Roleo raised €2.9 million to expand across Europe, in a round led by Baltic venture firm Practica Capital with participation from Nordic VC Inventure. The company, which describes its product as a personal AI career agent for tech professionals, has raised €3.46 million in total to date. Co-founder and CEO Janer Gorohhov said the firm believes everyone should have a career agent that monitors the market and surfaces relevant opportunities, according to EU-Startups. The round comes amid a run of European investments in AI-powered recruitment during 2026, including London-based Jack Jill (€34.68 million) and Belgium's Spott (€18.3 million).

In Porto, female-led CleanTech startup Seamoretech secured €1.1 million in the first closing of its Seed round, with participation from Rypples, 7Seas Capital and Crédito Agrícola. The closing brought the company's total raised to €3 million. Founded in 2021 by CEO Sofia Delgado and Eva Sousa as a spin-off of the University of Porto's Faculty of Engineering, the startup converts desalination brine into freshwater and critical minerals including magnesium, calcium, copper and lithium. Its containerised system uses a forward osmosis process designed to achieve Zero Liquid Discharge.

The Paris-based startup raised a Seed round led by Keen Venture Partners and 360 Capital to build affordable radars for critical infrastructure and military sites.