The Leadership Choices Behind M&A Winners  

Despite growth being the primary rationale behind most M&A deals, too often, transactions close without creating a stronger business. Harvard Business Review estimates that 70–90% of deals fail to realize their intended value.

Recent Prophet research offers a useful lens on why. We analyzed the S&P Composite 1500 and identified 179 companies that outperformed their industries by delivering exceptional, sustained growth between 2019 and 2024. 

On average, these companies delivered 27% annual revenue growth, compared with 6% for others. We then looked more closely at the Uncommon Growth companies that were active in M&A, alongside major transactions in the past five years, to identify the choices that distinguish stronger performers.

The differentiator is rarely the deal itself, but what companies do after the strategy is set. Top performers move beyond treating M&A as a financial event, using it instead to build a business that is more relevant, more capable, and better positioned than either company alone.

M&A, in other words, is often a driver of uncommon growth rather than separate from it. So which choices do the winners make that reliably shape value creation?

1. They Articulate the Story of Value Early – and Create Immediate Narrative Clarity for Investors, Employees and Customers 

M&A winners give the market a clear reason to care, articulating early a concise story of value that explains why the deal happened, what it unlocks, and how it will make the combined business more compelling. The strongest stories are not abstract or purely financial; they specify the core capability, adjacency, or platform advantage the transaction is meant to create.

This clarity provides investors with a basis for belief, helps employees understand what is being built, and equips commercial teams to talk about additive value that the deal creates with prospects and customers. When the value story is vague or overly technical, attention quickly shifts to back-end mechanics while the growth case remains unclear.

In some of the strongest cases, M&A did more than add capabilities or revenue. It helped shift the company’s frame of reference in the market. For example, Xylem used the Evoqua acquisition to move from being seen more narrowly as an equipment and infrastructure player toward a broader water technology, treatment and services platform with stronger recurring-revenue characteristics. Nasdaq used Adenza to reinforce its shift from market operator toward a higher growth, more software and solutions-led financial technology and infrastructure business. In both cases, the deal supported a stronger investor narrative around quality of growth, business mix and margin potential. 

2. They Define and Actively Manage Brand Portfolio and Architecture Logic 

Ambiguous brand portfolios create friction by confusing customers, diluting commercial focus, duplicating investment, and slowing execution.

M&A winners are deliberate from the outset about brand portfolio and architecture: which brands to integrate, which to keep distinct, and the role each should play in supporting growth. They do not leave these questions unresolved or assume they can be addressed later. When managed well, brand architecture clarifies the offer, helps leadership prioritize investment, and gives the organization a disciplined path for building, combining, or retiring brands over time. Importantly, they also treat brand architecture as a living system, to be actively managed as the business evolves and priorities shift.

Our research shows that top performers made these choices explicit and followed through. Home Depot preserved the SRS brand and operating model, which delivered $6.4B in fiscal 2024 sales. Extra Space, by contrast, consolidated under one brand after concluding dual brands lacked payoff. UBS made the clearest call, retiring Credit Suisse entirely. The common thread is not one brand versus many, but early, deliberate choice and sustained execution. 

3. They Treat Brand as an Operating System, not Just a Communications Asset 

The best M&As do not treat brand as a late-stage communications wrapper. Rather, brand functions as an operating system: the organizing idea that connects business ambition, market confidence, and internal alignment. It defines what the combined company stands for, how it creates value, and how decisions should be made—across client engagement, sales, talent, partnerships, and leadership behavior.

Used this way, brand shapes integration rather than decorating it. It guides how the business is integrated, how the new company is perceived, investment decisions, and can inspire confidence. Done well; it turns a transaction into more than a legal or financial event, providing a unifying logic that supports execution and growth.

Our research shows that top performers used brand to drive growth. Carrier positioned Viessmann as a premier brand and platform in sustainable climate solutions. UBS applied the same principle at far greater complexity when migrating Credit Suisse, using a clear brand narrative, “Banking is our Craft” to reinforce reputation, retain and grow client assets. 

4. They Strategically Align Culture and Performance 

Culture is one of the clearest differentiators between deals that build momentum and those that stall. While hard to measure in a short financial window, its effects surface quickly. When leadership is unclear or behaviors misaligned, value creation slows. When leadership creates a post‑deal environment that is coherent, purposeful, and well led, the organization can forge ahead.

Culture should not be treated as a soft topic or parallel workstream, rather a catalyst for success. Leaders define the values, behaviors, and ways of working that guide the combined company, shaping collaboration, decisions, and change. Further, in industries experiencing talent scarcity or where there’s heightened competition to attract in-demand talent pools, culture becomes a critical source of advantage.

Our research shows that this discipline translates into execution. Companies such as Xylem, Emerson, and Globus Medical made culture visible through integration outcomes, achieving early synergies and strong post‑close performance. This reinforces broader evidence that effective cultural management materially increases the likelihood of value realization.