Spain

The M&A state of play

Spanish M&A activity has remained strategically resilient in 2026 despite a backdrop of global trade tensions, geopolitical uncertainty, and evolving monetary policy. The market is characterised by a clear concentration dynamic: while the number of completed deals has declined, capital mobilised has held firm or increased markedly, driven by a series of transformational mega-deals that underscore Spain’s attractiveness as an investment destination.

In particular, Spanish target-side M&A activity in H1 2026 recorded 604 completed deals worth €27.3 billion. This represented a decline of approximately 14% in deal volume and 43% in aggregate deal value compared with H2 2025 (703 deals / €48.21 billion), partly reflecting the exceptional concentration of large-ticket transactions in the second half of last year. However, a comparison to H1 2025 paints a more constructive picture: relative to this period, aggregate completed deal value increased by approximately 29%, even as deal volume for completed deals declined by approximately 8%, confirming the trend towards fewer but larger completed transactions.

2026’s market-defining transactions

Spain has attracted a number of headline-making transactions in H1 2026 that illustrate the breadth and depth of the market. The largest inbound deal was the €5.6 billion acquisition of Urbaser SAU (a major waste management platform) by Blackstone and EQT from Platinum Equity reflecting continued investor appetite for essential infrastructure assets. CVC Capital Partners’ disposal of its 11.08% stake in Naturgy for €3.1 billion underlined the ongoing portfolio rotation by global sponsors in the Spanish energy sector.

The top 10 publicly disclosed M&A deals in Spain in H1 2026 were as follows:

Source: Mergermarket

On the outbound side, Banco Santander’s €10.8 billion acquisition of US-based Webster Financial Corp represented Spain's largest cross-border deal, signalling the renewed international ambition of Spanish corporates. Amadeus IT Group’s €1.35 billion acquisition of Idemia Public Security in France and Abertis’s €731 million completion of its Atlandes SA consolidation further demonstrate Spanish companies’ appetite for strategic international growth.

The top 5 publicly disclosed M&A deals closed by Spanish companies abroad in H1 2026 were as follows:

Source: Mergermarket

Energy and Natural Resources dominate

By deal value, Energy and Natural Resources was the dominant sector in H1 2026, accounting for €12.18 billion across 53 deals (nearly 45% of total disclosed value). The sector was anchored by the Urbaser acquisition (€5.6 billion) and CVC's full exit from Naturgy through an accelerated placement (€3.1 billion), alongside significant activity in the energy transition space: Asterion Industrial Partners’ €800 million investment in ABIO Energy, a biomethane platform, highlights growing investor confidence in Spain’s decarbonisation pathway. Exolum Corp’s €1.25 billion partial stake sale to Stoneshield Capital and Iconiq Capital further illustrates the appetite for energy infrastructure assets.

Real estate ranked second by value (€4.88 billion, 51 deals), driven by Brookfield’s €1.2 billion acquisition of the Fidere residential portfolio from Blackstone and HOOPP’s €690 million purchase of full control of the Iante REIT, reflecting sustained international demand for Spanish residential assets.

By deal count, Consumer and Retail and Industrials led by volume, underscoring the breadth of Spanish M&A, even as a relatively small number of high-value strategic transactions in Energy and Natural Resources dominated the value league table.

Private capital and cross-border activity

Private equity and financial sponsors continue to be a central driver of Spanish M&A, albeit with more selective deployment. In H1 2026, 177 private equity transactions were recorded, of which 39 disclosed values totalling €8.7 billion. Deal value declined year-on-year, reflecting tighter sponsor underwriting standards. Venture capital, by contrast, recorded 279 transactions worth €3.5 billion, with capital deployed up 17% despite a 21% decline in deal count. The combination of selective capital allocation and available dry powder is supporting activity in resilient sectors such as technology, business and professional support services, and infrastructure.

Cross-border investment remains strong. On the inbound side, France, the United States and the United Kingdom led foreign investment into Spain. On the outbound side, the United States was the lead destination by value, with €10.9 billion deployed (a figure largely driven by the Santander-Webster deal). Spanish companies are therefore participating in a two-way market: attracting international capital while using outbound acquisitions to build scale and capability.

Family-owned companies, representing over 90% of Spain’s business fabric, are increasingly seeking capital to scale and professionalise. Private capital can support growth and succession while allowing founders to retain a stake or bring in an industrial partner, creating opportunities for minority investments, buyouts and structured transactions.

Digital infrastructure and defence on the rise

Spain is increasingly positioning itself as a strategic hub for European digital infrastructure. The convergence of AI-driven demand, data sovereignty requirements, and cloud computing expansion is driving significant investment in data centres, fibre networks, and related technology assets. Amadeus IT Group’s €1.35 billion acquisition of Idemia Public Security (France) exemplifies how Spanish technology champions are acquiring capabilities in cybersecurity and digital identity to complement their existing platforms.

That said, the evolving regulatory framework for data centres in Spain (particularly around sustainability standards) remains a source of uncertainty that investors and developers will need to monitor closely as the sector scales.

The defence sector is emerging as a new frontier for Spanish M&A, driven by the geopolitical context and European commitments to increased defence spending. A landmark example is the agreement signed in August 2026 between Indra Sistemas and the South Korean firm Hanwha Aerospace to manufacture K9 self-propelled howitzers in Spain for the Spanish Army.

Increasing regulation

Spain’s regulatory environment for M&A has become significantly more complex. Royal Decree-Law 1/2025 extended the transitional FDI authorisation regime for certain EU/EFTA investments until 31 December 2026, maintaining a broader screening framework than ever before. The regime now covers critical infrastructure, defence, media, data, telecommunications, energy, transport, food, health, and financial sectors - effectively subjecting a wide range of transactions to government scrutiny. At the EU level, a new FDI Screening Regulation adopted in June 2026 will broaden mandatory screening obligations across Member States once it becomes applicable, further increasing the regulatory touchpoints for cross-border transactions into Spain.

In a landmark development, the CNMC (Spain’s competition authority) issued its first-ever prohibition of a concentration in late 2025 (Curium Pharma/Institut de Radiofarmàcia Aplicada de Barcelona), signalling a more interventionist approach. The CNMC also reviewed BBVA’s proposed takeover of Banco Sabadell and cleared deals involving Vodafone España's acquisition of Finetwork, and a Mahou San Miguel distribution transaction, among others. The practical message is that even transactions with strong strategic logic require careful competition analysis and a realistic approvals timetable. Complex competition cases now take 5-6 months for review, adding meaningful timeline risk to transactions.

Additionally, at the European level, the EU AI Act became fully applicable in August 2026, making AI governance a transaction-critical element. Buyers are increasingly demanding evidence of robust governance frameworks, and gaps may be reflected in valuation adjustments, escrow arrangements and tailored contractual protections. The Digital Operational Resilience Act (DORA), applicable since January 2025, has also made ICT risk management and third-party oversight central to financial sector due diligence.