Europe's Launchpad | Molten Backs Isar Aerospace's €270m Series D

Introducing Isar Aerospace

In 2025, Europe conducted fewer than 10 orbital launches. The United States conducted more than 190. For a continent increasingly reliant on space-based infrastructure for defence, communications, and economic competitiveness, that gap has become impossible to ignore. Isar Aerospace is building the solution.

Founded in 2018 and headquartered near Munich, Isar Aerospace is Europe's leading private orbital launch company. Its flagship vehicle, Spectrum, is a two-stage rocket designed to deliver small and medium-sized satellites into orbit, developed, manufactured, and tested almost entirely in-house at the company's production facility in Parsdorf, near Munich. With over 400 employees across five international locations, Isar is establishing itself as one of the most credibly positioned private launch companies in Europe with ambitions to reach orbit.

The deal

We're glad to announce Molten's strategic investment of €30 million in Isar Aerospace's €270m Series D round, where we are a significant strategic backer alongside various others including Island Green Capital and existing investors HV Capital, Lakestar, UVC Partners and KfW Capital. The round includes substantial contributions from European stakeholders, underlining the continent's commitment to space sovereignty and Isar's role in delivering it.

The capital will drive global scaling and ramp up serial production of the Spectrum launch vehicle. Following its existing launch complex at Andøya, Norway, Isar has signed a Letter of Intent with Maritime Launch Services to establish a second site at Spaceport Nova Scotia in Canada, broadening its orbital coverage and customer reach.

Why we’re investing

We believe Isar Aerospace has the potential to become a generational European company.

Space launch is facing a structural supply deficit in Europe at precisely the moment demand is accelerating. Governments and commercial operators increasingly require reliable, responsive access to orbit for communications, earth observation, defence, and national security, yet Europe lacks an operational, commercially competitive launch provider. We believe success in this market is a function of the ability to iterate fast and drive down the cost of failure, and that requires owning the full technical stack.

The Spectrum launch vehicle offers something Europe has long needed: a commercially competitive, privately operated dedicated small-launch capability, built Europe, s that come with US launch providers. For European government and defence customers, who now represent 60% of Isar's demand pipeline (up from almost entirely civil demand just 12 months ago), this matters enormously. Sovereign access to space has become a defining requirement for European defence autonomy, and Isar is the leading private European company with a credible near-term path to commercial launch.

What sets Isar apart isn't just the market it's serving but how it's been built. Its vertically integrated manufacturing model enables rapid development cycles and a structural cost advantage over peers, driving and accelerating iteration in a way that competitors relying on outsourced supply chains can't match.

The global precedents for what this can become are compelling. The space economy is large and growing fast, and launch has historically been a gateway into a much broader value chain.  Isar’s Anthem programme, which enables allied nations to build national launch capabilities free from US technology dependencies, is an early signal of that wider ambition.

. Its qualification flight, Mission 'Onward and Upward', carries five CubeSats for ESA's Boost! Programme, with a launch window opening 15 to 21 June. The next milestone is close.

This is a company that has made real technical progress, is funded to reach its next key milestones, and is operating in a market where demand is structural, urgent, and growing. We're proud to be part of the journey.

“Isar Aerospace represents one of the most significant opportunities in the European space technology sector. It exemplifies what we do as venture capital investors: identifying and providing our investors with exposure to category-defining companies, backing them from an early stage, continuing to support these companies at key value inflexion points, and ultimately being well-positioned to realise outsized returns. We are extremely proud to be continuing to support Isar’s success.”

Ben Wilkinson, CEO, Molten Ventures

"Isar is the kind of company that comes along rarely, one where the technology, the timing, and the market need are all aligned. Europe's demand for sovereign launch capability has accelerated faster than almost anyone anticipated, and Isar has made genuine technical progress at exactly the right moment. We've been watching this company closely for some time, and are excited to be backing them."

Franco Danesi, Senior Partner, Molten Ventures

"Space is no longer a frontier; it is the infrastructure of national power. With this strategic backing, we are expanding access to space for nations worldwide, delivering an orbital launch system at scale for government and commercial customers."

Daniel Metzler, Co-Founder and CEO, Isar Aerospace