Mergers and Acquisitions

Partners in Strategic Growth

We are preeminent strategic advisors on law firm combinations. In the first quarter of 2018 alone, we were involved in three combinations involving Am Law 100, 200 or Global 100 firms on both sides of each deal. Over the past two decades, we have advised on many of the most successful and historic law firm combinations between firms in the United States, Great Britain, and the People’s Republic of China. We counsel law firms of every size, from local and regional partnerships to leading global participants in the legal sector. In every combination, our goal is to optimize the value proposition of the combined firm as driven by its people, practices, culture, brand equity, and desired position in the marketplace.

Our Experience

Our consultants serve as trusted advisors to firm leadership on all aspects of mergers and acquisitions, including developing a merger strategy, building internal consensus for the strategy, analyzing and prioritizing targets and suitors, and facilitating discussions between them. We have served as advisors to the deal, as well as independent advisors to both targets and suitors. We offer particular value in overcoming the often vexing impediments to successful mergers, from governance issues to conflicts, choice of name, and disparate compensation systems.

Our Approach

While each combination is unique, engagements typically include some or all of the following:

  • Work with firm leadership to create an expansion strategy that will accelerate achievement of the firm’s short- and long-term vision
  • Conduct market analysis and build consensus among key partners around criteria for candidate firms
  • Develop a list of target firms based on our client’s priorities and facilitate meetings between firm leaders
  • Prepare for meetings with candidate firms by supplying relevant data and helping identify and articulate the value proposition for the combined firm
  • Formally and informally facilitate merger discussions, manage the due diligence process, and analyze data relevant to the combination
  • Develop and implement solutions to bridge performance and other gaps between the firms, as well as internal and external communications to achieve client objectives
  • Advise on realizing the benefits of the combination through client interviews and leveraging cross-servicing and cross-selling opportunities in the combined firm

The Man in the Middle of Law Firm Combinations

Kent Zimmermann advised on the largest two mergers of 2025, one of which was the largest law firm merger in history, the combination of Cadwalader Wickersham & Taft with Hogan Lovells. In this Q&A, Kent discusses with law.com how ZG has invested for the past decade in building out the future of its firm, including a team of associates and analysts, and how that has translated into more impactful value for clients and deeper, longer relationships with them

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Law Firm Disrupted: Getting 'Under the Hood' of Law Firms at Merger Time More Art Than Science

The fact that law firm merger partners may have significantly different revenue per lawyer or profits per partner figures doesn’t matter as much in today’s world of law firm combinations. The will for law firms to merge—and any changes that firm leaders are willing to make to complete a deal—may be more important than a firm’s revenue per lawyer or profits per partner figures. Profit pools are not typically integrated on day one of a combined firm. Kent Zimmermann explains that this delay gives firms some time to bridge any gaps in financial performance through a mix of what he calls “revenue and expense” synergies.

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Outperformers: Lessons from Top Law Firm Leaders

What distinguishes the world’s most successful law firms from their peers?

The Outperformers draws on candid conversations with leaders of the profession’s most admired and profitable firms to reveal how exceptional firms build and sustain competitive advantage. Through first-hand insights from chairs, managing partners, COOs, and senior business leaders, the book explores how strategic clarity, disciplined execution, and strong leadership cultures drive superior performance in an increasingly competitive legal market.

Authored by Kent Zimmermann with journalists Patrick Smith and Carlyn Kolker, The Outperformers is written for firm leaders, partners, and senior professionals who aim not merely to keep pace—but to lead.

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