Why Leadership Disputes Can Destroy Billion-Dollar Deals Even After Financial Terms Are Settled

A merger can make sense on paper and still fail because the companies cannot agree on who will lead the combined business. Even after negotiations settle financial terms disagreements over executive appointments, board control and corporate influence can become obstacles that neither side is willing to accept.

A recent example came up in October 2026 when merger talks between Johnson & Johnsons orthopaedics division and medical technology company Smith & Nephew ended because of leadership issues. According to Reuters the companies had reached a stage in negotiations and were aligned on major financial terms and deal structure but they could not agree on the chief executives role. The proposed transaction had been valued at $34 billion for the combined business. Source: Reuters

The case shows a truth in mergers and acquisitions (M&A): agreeing on the price is only part of completing a transaction. Companies must also decide how power, responsibility and accountability will work after two organisations become one.

Why Leadership Becomes a Deal-Breaker

1. The CEO position represents control, not a job title

In a big merger the chief executive officer determines the organisations strategic direction influences senior appointments and oversees the execution of business priorities. The position can shape how budgets are allocated, which divisions receive investment and how quickly integration plans move forward.

For executives who have spent years building their organisations accepting a leader can mean giving up influence over the companys future. Both sides may believe their preferred candidate is best equipped to lead the business.

That conflict becomes especially hard when a transaction is presented as a merger of equals. Even if the financial structure appears balanced disagreements over leadership can show differences in how each company sees the proposed partnership.

1. Financial agreement does not guarantee strategic alignment

Companies can agree on valuation, ownership percentages, financing and other major terms while having views about what the combined business should become.

One company may want cost reduction while the other wants to focus on long-term investment. They may also disagree over where headquarters should be, which divisions should be expanded or how quickly overlapping operations should be merged.

A leadership appointment often becomes the center of these differences. The candidate selected to lead the business may decide which strategy gets priority making the CEO decision a matter of control, not personal choice.

Without agreement on the organisations direction even an attractive financial transaction can become hard to complete.

1. Boardroom power can be as important as ownership

Ownership percentages determine rights but governance arrangements decide how important decisions are made. Companies negotiating a merger must create the board composition, voting rights, committee responsibilities and the authority given to executives.

Disagreements can happen when each side wants representation or stronger protection against decisions made by the other. Investors may also question if a proposed governance structure gives the combined company accountability.

The failed $35 billion merger between advertising groups Omnicom and Publicis in 2014 shows these challenges. Reuters reported that the transaction failed after disagreements over control, executive roles and the companies’ different corporate cultures. The proposed merger was meant to create a global advertising group but the parties could not resolve their differences. Source: Reuters via Business Standard

How Leadership Conflicts Destroy Deal Value

When negotiations fall apart late in the process the financial consequences can go beyond the transaction itself.

Companies may lose months of management time face legal costs and delay strategic plans while negotiations continue. They may also deal with uncertainty among employees, customers, suppliers and investors.

Employees may worry about reporting lines, possible job cuts and changes to company culture. Customers may wonder if the merged business will keep the service levels while investors may rethink the companys growth prospects on its own.

There can also be an opportunity cost. A company looking for one merger may put acquisitions, partnerships or internal investments on hold. When the transaction fails management has to go to the market with less confidence about the next move.

The damage is not always permanent and a failed merger can sometimes make a company better positioned to pursue another strategy. However the longer the process continues without a result the more disruption can happen.

A Recent Example: The Estée Lauder–Puig Talks

Leadership and control issues can go beyond the CEO role. Ownership structures, family influence and how key stakeholders are treated can also be important.

In May 2026 talks between US cosmetics company Estée Lauder and Spanish beauty company Puig ended, stopping a merger that would have created a combined business about $40 billion. Reuters said that disagreements involving the controlling families, leaks of information and demands linked to the minority stake of Charlotte Tilbury, whose brand is mostly owned by Puig led to the breakdown. Source: Reuters

This case shows why dealmakers must look beyond the value. Existing shareholders, founders and important executives may have expectations about their roles, ownership rights and independence. If those expectations are not handled they can stop an agreement when the reason for the merger seems strong.

How Companies Can Prevent Leadership Disputes

The best way is to settle questions of governance and leadership not treat them as final details after the financial terms are agreed.

Companies should create a process for choosing the combined companys CEO, including the standards for evaluating candidates and who makes the final decision. Succession plans should also cover what happens if the chosen leader leaves or does not meet expectations.

Board representation, voting rights and decision-making roles must be clearly defined. Both sides should know how to handle disagreements and which matters need agreement from both sides.

It is also important to check if the two management teams have a view of the post-merger strategy. Differences in culture risk tolerance and management style should be looked at during diligence not after the deal is mostly done.

Finally sensitive agreements should be included in the transactions details wherever possible. Clear terms can help reduce confusion although legal words cannot fully replace trust and real cooperation.

Leadership disagreements can end billion-dollar deals because a merger involves more than combining statements and agreeing on a price. It also requires companies to decide who has control how strategy will be carried out and how different interests will be managed.

The collapse of the proposed Johnson & Johnson–Smith & Nephew deal along with problems in other big mergers shows how executive appointments and governance arrangements can become major problems.

For companies planning acquisitions the message is clear: leadership, control and decision-making should be talked about along with valuation and financing. A deal has a chance of delivering what it promises when both sides agree not only on the financial details but also, on how the combined business will be run.

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