Defence M&A Breaks a Half-Year Record. Here Is What the Buyer Behaviour Tells European Founders.

The headline number is striking but the wrong thing to stare at. 42 transactions were completed in H1 2026, a 56% increase from the 27 deals completed during H1 2025, while aggregate deal values remained broadly steady at £2.7bn, compared with £2.8bn in H1 2025 euro-sd.com. More deals at smaller average sizes is not froth. It is a structural shift in who is buying, what they want, and why early-stage European founders need to update their assumptions about the exit landscape right now.

Volume Without Value Inflation Is the Useful Signal

The record transaction count sits inside a broader aerospace and defence surge. The average volume of venture deals in European defence during the past five years has nearly quadrupled versus the prior five years bain.com. That acceleration inside the surge matters more than the topline: if you are building a capability-dense software or autonomous-systems venture, you are in the category that commands premium attention from both strategic and financial buyers right now.

After a decade of limited activity, private equity is investing more heavily in defence, with many general partners and limited partners now considering defence as an attractive and viable investment compared with other industrial segments. PE deal activity in European defence over the past five years has increased nearly 100% on average when compared with the prior five years bain.com.

The macro driver behind this is durable. Global military spending rose for an eleventh straight year to a record $2.89 trillion in 2025, driven by Europe's rearmament push, even as US outlays declined cnbc.com. That spending curve creates durable demand visibility, and demand visibility is what unlocks M&A at volume.

What Buyers Are Actually Acquiring

At the heart of this investment boom is defence technology, with capital increasingly flowing not into traditional military hardware but into AI, autonomous systems, drones, digital targeting systems, cyber and electromagnetic capabilities, space technologies, and maritime technologies euro-sd.com.

On the prime side, the valuation gap between legacy platforms and next-generation defence technology is widening. Europe's defence industry is entering a decade of rising investment and robust M&A as the continent commits to greater self-sufficiency, with defence spending up sharply across the continent, fuelled by growing geopolitical threats, multinational initiatives such as ReArm Europe, and a 5%-of-GDP pledge at the Hague Summit bain.com.

Promising areas for investment include carve-outs of noncore or orphaned defence businesses that require increased focus, midcap companies that need to scale, and infrastructure investments bain.com. That divestiture wave matters for founders: it generates assets that become competitors or acquisition targets, and it signals which capability gaps large players now prefer to fill via M&A rather than internal R&D.

The Neo-Prime Buyer Emerges in Europe

The term "neo-prime" refers to a new generation of venture-backed, technology-native defence companies building toward the scale and breadth of a traditional prime contractor, competing with or acquiring their way into capability domains that legacy primes have historically owned. The rise of these companies is the most consequential structural development visible in the H1 2026 data.

European primes are leading cross-border M&A while US primes are establishing partnerships euro-sd.com. But venture-backed platforms are increasingly the ones setting the acquisition agenda. On 5 May 2025, Anduril Industries announced it had signed a definitive agreement to acquire Klas, a global leader in edge computing and tactical communications, with the acquisition bringing Klas's rugged hardware into Anduril's portfolio of autonomous systems and connected warfare capabilities anduril.com. The transaction closed in July 2025 hl.com. These are early examples of neo-primes acquiring technology companies to fill stack gaps, and a clear sign the model is maturing on both sides of the Atlantic.

The pace at which European neo-primes have scaled validates the broader pattern. Germany's Helsing raised $1.8 billion in Europe's biggest-ever funding round for a defence-technology startup, valuing the company at $18 billion, with investor demand significantly exceeding the available allocation defensenews.com. New and existing investors participated in the round, including Dragoneer Investment Group, Lightspeed Venture Partners, Disruptive, Iconiq, Growth Equity at Goldman Sachs Alternatives, JPMorgan Chase, Canada Pension Plan Investment Board, General Catalyst, Plural, and Stepstone helsing.ai. The latest round raises Helsing's valuation from a reported €12 billion in June 2025 thenextweb.com. The company's valuation puts it among Europe's most valuable defence companies despite having been founded only in 2021 techfundingnews.com.

Helsing's round lands alongside comparable raises from other European ventures. Autonomous defence startup Quantum Systems raised $1.2 billion in a Series D funding round, giving it a valuation of around $8 billion on a post-money basis, announced 2 July 2026 cnbc.com. The financing was co-led by Blackstone, Noteus, Airbus, and Advent quantum-systems.com. Defence tech companies have raised a record $17.4 billion so far this year, far exceeding the $11.2 billion the sector picked up in 2025 cnbc.com.

Quantum Systems' co-CEO Florian Seibel has been explicit about the ambition, describing the company as "building a next generation neo prime that has the potential to disrupt defence as we know it today" briefs.co. The existence of this peer group changes the acquirer landscape for smaller European ventures. These capitalised neo-primes need to buy capabilities, and they are demonstrably willing to do so inside Europe.

The Sovereignty Constraint on Who Can Buy You

Not every acquirer is created equal in the European context, and cap table structure is increasingly a procurement eligibility variable, not just a governance preference.

One dimension of Helsing's raise that the company emphasised is what it did not change: despite taking capital from JPMorgan Chase, Goldman Sachs Alternatives, Dragoneer, and Lightspeed, the company stated it "remains predominantly European-owned" helsing.ai. Co-CEO Torsten Reil stated in May, before the round closed, that the company remained roughly 80% European-owned, though the round ultimately grew by $600 million from its originally reported size and the post-close ownership percentage has not been confirmed at a specific figure thenextweb.com. The pitch is sovereignty: European governments buying home-grown defence AI rather than importing it from the United States. The cap table complicates that story.

The governance implication for earlier-stage ventures is real. These firms are European-controlled but increasingly scaled on American money, with Goldman, JPMorgan, and a Canadian pension fund in the cap table of the continent's flagship defence unicorn helsing.ai. The question of whether that ownership structure holds, and what it means for procurement eligibility, is not hypothetical. Under the European Defence Industrial Strategy, EU member states are expected to make steady progress towards procuring at least 50% of their defence procurement budget within the EU by 2030 and 60% by 2035 defence-industry-space.ec.europa.eu. These targets are confirmed directly in the Commission's own strategy documentation. For founders, that procurement target is a customer guarantee if your cap table is structured correctly. A non-European-controlled cap table could disqualify your venture from EU-reserved contracts, regardless of where you are incorporated or where your engineers sit.

The IPO Path Opens, but Slowly

A parallel exit channel is developing alongside M&A. Helsing alongside Quantum Systems now sits in a small group of European defence tech companies that have closed billion-dollar rounds at double-digit billion valuations within recent weeks of each other 2 sources. That is a new peer group, and its existence is beginning to make a standalone public listing conceivable for the most mature European ventures.

The valuation bar for a credible IPO remains high: multi-year customer relationships, contracted revenue across multiple MoD customers, and production capacity that institutional investors can underwrite. For most Series A and B ventures, M&A remains the practical path. As one senior M&A adviser has noted, defence technology is now one of the most attractive investment sectors globally, and with government defence budgets continuing to rise and private capital flowing into the sector at unprecedented levels, investment and dealmaking activity are expected to remain exceptionally strong well beyond 2026 euro-sd.com.

Procurement moves in years, not months. Government customer relationships do not transfer automatically on a change of ownership. Security clearances, programme approvals, and export authorisations are not assets that move with the business. In defence, exit can be harder than entry.

For Founders

Know which buyer category you are positioning toward now. Promising areas for active dealmaking include carve-outs of noncore or orphaned defence businesses, midcap companies that need to scale, and infrastructure investments bain.com. Add to this the neo-prime platforms using fresh capital to acquire missing stack layers, and PE-backed roll-ups of qualified Tier 2 and Tier 3 suppliers. Each category has different due diligence timelines, valuation frameworks, and governance requirements. Founders who are not deliberately positioning toward one of these are leaving optionality on the table.

Structure your cap table for the acquirer you want. European sovereign ownership is not just a narrative choice, it is a procurement eligibility filter. EU member states are expected to procure at least 50% of their defence procurement budget within the EU by 2030, rising to 60% by 2035 defence-industry-space.ec.europa.eu. If your eventual acquirer needs to integrate your technology into Bundeswehr, UK MoD, or European Defence Agency-funded programmes, your cap table at the point of acquisition will be scrutinised. Prioritise European lead investors at early stages even if US capital offers better headline terms. The difference in exit valuation from a neo-prime acquisition versus being closed out of EU-reserved contracts could be measured in company-defining multiples.

Identify the gaps in the neo-prime stack above you. Capital is increasingly flowing into AI, autonomous systems, drones, digital targeting systems, cyber and electromagnetic capabilities, space technologies, and maritime technologies euro-sd.com. Visible examples include the "drone wall" coalition of six eastern and northern European states developing a joint unmanned defence capability, and Project Bromo, a joint venture uniting Airbus, Thales, and Leonardo to create a European champion in the space sector euro-sd.com. Map where the European neo-primes are visibly thin across these capability categories. These are the areas most likely to generate M&A interest from a well-capitalised neo-prime in the next 18 to 24 months.

Price exit friction into your timeline. Europe is embarking on a once-in-a-generation military recapitalisation bain.com, but premium outcomes in defence M&A depend on credible synergy underwriting, standalone cost models, and early identification of regulatory and national security requirements. If you are a supply chain or manufacturing-adjacent venture, this is your moment to position, but budget more time than a pure software exit: security clearances, export authorisations, and customer consent clauses can add significant time to any transaction.

The record H1 transaction count is confirmation that the money is serious, the buyer pool is wider than it has ever been in European defence, and the capability categories attracting premium attention are precisely where most early-stage European ventures are building. The execution risk is not finding interest. It is managing cap table composition, sovereign eligibility, and exit friction before a term sheet arrives.