Stonehill is a leading M&A integration consulting firm in the United States, helping organizations turn transactions into measurable enterprise value. While many firms focus on strategy, we focus on execution—ensuring that every merger, acquisition, or carve-out delivers on its investment thesis. Our operator-first approach brings structure, speed, and accountability to integration, aligning leadership, processes, systems, and teams to accelerate value capture and minimize disruption. We partner with private equity firms, corporate acquirers, and portfolio companies to drive disciplined integration from Day 1 through full synergy realization.

M&A integration is where deals succeed or fail. Without a clear roadmap, strong governance, and hands-on execution, even the most strategic acquisitions can fall short of expectations. Stonehill addresses this gap by embedding experienced operators into the integration process—working alongside executive teams to translate deal rationale into actionable plans, drive alignment across functions, and deliver results at pace. Our approach is designed to reduce risk, compress timelines, and unlock both cost and revenue synergies faster than traditional consulting models.

1. Integration Strategy & Value Creation Planning

We define how the deal will create value—and build the roadmap to achieve it. Stonehill aligns the integration strategy to the investment thesis, identifying cost synergies, revenue opportunities, and operational improvements. We develop a detailed value creation plan that includes quantified targets, initiative-level roadmaps, ownership structures, and KPI frameworks. This ensures leadership is aligned from the outset and that integration efforts are directly tied to measurable financial outcomes.

2. Integration Management Office (IMO) Design & Execution

Stonehill designs, stands up, and leads high-performing Integration Management Offices that drive execution discipline. We implement governance structures, reporting cadences, and decision-making frameworks that provide full visibility into integration progress. Acting as an extension of the executive team, we coordinate workstreams, manage dependencies, track synergy realization, and proactively address risks—ensuring the integration stays on track and delivers results.

3. Functional Integration & Operating Model Alignment

We integrate the core functions of the business to create a cohesive, scalable operating model. Stonehill works across operations, finance, sales, HR, procurement, and supply chain to align processes, eliminate redundancies, and define clear roles and responsibilities. This includes process mapping, organizational design, and workflow optimization to improve efficiency and performance. The outcome is a unified organization that operates seamlessly and is positioned for growth.

4. Systems Integration & Technology Enablement

Technology integration is often the most complex and critical component of M&A. Stonehill supports system rationalization, data migration, and platform alignment to ensure business continuity and scalability. We bridge the gap between business and IT, ensuring that systems decisions are driven by operational needs and long-term strategy. Our approach reduces integration risk, accelerates timelines, and enables a modern, scalable technology environment.

5. Change Management & Communication

Successful integration requires more than systems and processes—it requires people alignment. Stonehill designs and executes structured change management strategies that align leadership, engage employees, and maintain productivity through transition. We focus on clear communication, stakeholder alignment, and adoption planning to ensure the organization embraces the new operating model and delivers sustained performance.

As a leading M&A integration consulting firm in the United States, Stonehill differentiates itself through execution. We don’t operate as passive advisors—we act as integration leaders, embedded within your team, driving outcomes in real time. Our experience across industries and transaction types allows us to tailor integration strategies to each client while maintaining a disciplined, repeatable approach that delivers consistent results.

From pre-close planning and Day 1 readiness through full integration and value realization, Stonehill helps organizations move faster, operate more effectively, and achieve the full potential of their transactions. Whether integrating a platform acquisition, scaling a portfolio company, or executing a complex carve-out, we bring the structure, expertise, and execution focus required to make M&A successful.