Freshfields advises Blackstone and Airbus on Quantum Systems’ $1.2bn Series D financing round

Global law firm Freshfields has advised Blackstone and Airbus Defence and Space as lead investors in Quantum Systems’ $1.2bn Series D financing round, valuing the company at ~ $8 billion on a post-money basis and supporting the scale-up as a leading deep-tech prime for interoperable, multi-domain autonomous capabilities in Europe.

The round was co-led by Blackstone, Airbus, Noteus and Advent, and supported by a high-calibre syndicate of crossover and long-term institutional investors, including BOND, Fidelity Management & Research Company, Wellington Management, A.P. Moller Holding, and Elephant Lake Ventures, as well as existing shareholders such as Balderton and HV Capital.

The financing more than doubled Quantum Systems’ valuation, reflecting the company’s fast-growing revenue, demonstrated profitability, and category-defining market positioning with its multi-domain strategy.

While Blackstone joined as a new investor, Airbus Defence and Space has been invested since the Series C round in May 2025. For more information, please click here for Quantum Systems’ press release.

The two Freshfields teams advising Blackstone and, separately, Airbus Defence and Space comprised:

Advisors to Blackstone: 
Partner Arend von Riegen (Frankfurt) and Principal Associate Lorenz Koffka (Hamburg, both Private Equity/Venture Capital)

Advisors to Airbus Defence and Space:
Partners Maximilian Lasson (M&A/Venture Capital, Munich), Uwe Salaschek (Foreign Direct Investment, Berlin), Charlotte Colin-Dubuisson (Antitrust, Paris) and Associate Julius Raddatz (M&A/Venture Capital, Munich)