A&D M&A: Strategic Rationale, Deal Dynamics, and Recent Transactions

Introduction

Aerospace and defense M&A is in an acceleration phase driven by the convergence of rising defense budgets, the commercial aviation supercycle, and strategic imperatives that are reshaping company portfolios across the value chain. The global A&D M&A market reached approximately $195 billion in 2024 and is projected to grow at nearly 12% CAGR to $341 billion by 2029. Deal volume in the aerospace, defense, and government services space increased over 20% year-over-year through 2025, with middle-market transactions dominating by count and portfolio carve-outs driving headline value.

For industrials bankers covering A&D, this environment generates deal flow across every transaction type: sell-side and buy-side advisory, carve-out execution, PE platform builds, and fairness opinions on contested transactions. This article maps the strategic rationale driving the current M&A wave, the deal dynamics unique to A&D, and the recent landmark transactions that illustrate these themes.

Portfolio Reshaping by Primes and Tier 1 Companies

The most strategically significant A&D deals are driven by primes and large tier 1 companies reshaping their portfolios to concentrate on high-growth, high-priority capability areas. This means divesting non-core business lines and acquiring capabilities in areas aligned with Pentagon modernization priorities.

Portfolio Reshaping (A&D Context)

The strategic process of divesting business units that do not align with a defense company's core focus areas and acquiring capabilities that strengthen its competitive position in priority segments. In the current environment, primes are divesting legacy hardware, commercial-adjacent businesses, and non-core technology units while acquiring capabilities in electronic warfare, cyber, space, autonomous systems, and advanced munitions. Portfolio reshaping generates both sell-side (divestiture advisory) and buy-side (acquisition advisory) mandates for A&D bankers.

L3Harris's evolution exemplifies this trend. After acquiring Aerojet Rocketdyne for $4.7 billion in 2023 to add rocket propulsion and missile capabilities, L3Harris subsequently divested the acquired space propulsion business (selling a majority stake to AE Industrial Partners in early 2026) and sold the Aerojet Ordnance Tennessee unit to BWX Technologies. This pattern of "acquire, integrate, and re-shape" generates multiple advisory engagements from a single strategic initiative.

RTX has been equally active in portfolio optimization. The company divested Raytheon's cybersecurity business, sold its Forcepoint unit, and is continuing to evaluate its portfolio for further simplification opportunities. These divestitures create carve-out advisory mandates that are among the most complex and highest-fee transactions in A&D banking, requiring standalone financial preparation, transition services agreements, and ITAR compliance structuring.

PE Consolidation of the Supplier Tier

Private equity has become a transformative force in A&D M&A, particularly in the fragmented tier 2-3 supplier base. PE firms like Veritas Capital, AE Industrial Partners, Arlington Capital Partners, and Lindsay Goldberg are building platform companies by acquiring multiple small defense suppliers and consolidating them under professional management.

The PE playbook in A&D mirrors the broader industrials roll-up strategy but with sector-specific nuances. The buyer must hold or obtain appropriate security clearances, navigate CFIUS requirements, and maintain ITAR compliance throughout the acquisition process. These regulatory requirements increase execution complexity but also reduce competition (fewer buyers can participate), creating acquisition opportunities at reasonable multiples for qualified sponsors.

PE exit activity is also accelerating as firms that acquired A&D platforms during 2018-2021 approach hold period maturity. This creates a wave of sell-side mandates as sponsors seek liquidity through competitive auctions, secondary sales to other PE sponsors, or sponsor-backed IPOs. The combination of new platform acquisition activity, bolt-on deal flow, and exit-driven sell-side mandates makes PE sponsors the most active participant category in A&D middle-market M&A, and building strong sponsor relationships is essential for any banker covering the A&D middle market.

The cleared PE model is particularly important to understand: PE firms like Veritas Capital and Arlington Capital maintain portfolio companies with existing facility clearances and security infrastructure, allowing them to efficiently bolt on new acquisitions without establishing new clearances from scratch. This operational infrastructure is a genuine competitive advantage over generalist PE firms that would need to build clearance capability from nothing for each new investment.

Technology-Driven Acquisitions

The third driver is technology acquisition in priority areas: hypersonic weapons, space-based capabilities, cyber and electronic warfare, autonomous systems, and artificial intelligence applied to defense applications. Both primes and PE sponsors are competing for technology companies that can provide differentiated capabilities in these fast-growing segments.

A&D M&A operates under constraints that do not exist in most other industrial sub-sectors.

Restricted buyer universes. ITAR regulations and classified program access requirements often limit the buyer universe to US-based acquirers. For companies with CFIUS-sensitive operations, even some domestic PE buyers may face scrutiny if their fund structures include foreign limited partners. This restricted universe changes how bankers run processes: rather than broad market canvasses with 100+ potential buyers, A&D sell-side processes may involve targeted outreach to 15-30 qualified parties.

Extended timelines. Between ITAR compliance review, security clearance novation, and potential CFIUS filing, A&D transactions routinely take 6-12 months to close, compared to 3-6 months for most industrial M&A. Bankers must structure deals to account for these timelines, including interim operating covenants and ticking fee arrangements.

National security review. Any transaction involving a defense company with significant classified operations will likely undergo CFIUS review, adding 45-90+ days to the timeline and creating deal uncertainty. The potential for CFIUS to block or impose conditions on a transaction is a real risk that bankers must assess and communicate to clients.