The Difficult Road of CEO Comebacks: Why Familiar Leadership Faces Unprecedented Challenges Despite Their Experience

By Staff Writer | Published: June 6, 2025 | Category: Leadership

With Stephen Hemsley returning to UnitedHealth's helm, we examine why boomerang CEOs typically underperform during their second stint despite their institutional knowledge.

Stephen Hemsley's return to UnitedHealth Group marks another chapter in the growing phenomenon of the boomerang CEO—leaders who make a comeback to rescue the companies they once led. UnitedHealth hopes Hemsley's 72-year-old steady hand can guide the health insurance behemoth through federal investigations and the aftermath of a top executive's death. Yet the odds historically favor disappointment rather than triumph in these second acts.

The Wall Street Journal article by Chip Cutter, "Boomerang CEOs Know 'Where Everything's Buried.' So Why Are Second Acts So Hard?" presents a sobering reality: returning CEOs rarely recapture their previous magic. Despite their intimate knowledge of company operations, most boomerang CEOs struggle to adapt to new challenges, with statistics showing their performance typically deteriorates during their encore performance.

The Alarming Performance Gap

The most striking evidence comes from executive recruiting firm Spencer Stuart, which analyzed boomerang CEO appointments at S&P 500 companies since 2010. Their findings reveal a stark performance gap: companies with returning CEOs averaged an annual 3% decline in shareholder return during the leader's second stint, compared with a 7% annual increase during their first tenure.

Even more concerning, Spencer Stuart found this pattern nearly universal. Of 19 S&P 500 companies that permanently appointed former CEOs since 2010, 14 of those executives performed worse in their second tenure based on total shareholder returns.

This raises fundamental questions: Why do boards continue to reach for familiar faces during crises? And what factors contribute to the deterioration in performance when previously successful leaders return?

The Seduction of Institutional Knowledge

The appeal of boomerang CEOs is undeniable. As Jeffrey Sonnenfeld of the Yale School of Management notes in Cutter's article, "When you take a returning general, they hit the ground running and take command." This institutional knowledge provides an immediate advantage—the returning CEO "knows where everything's buried in the place."

Boards justify these reappointments on several grounds:

However, these apparent advantages often prove insufficient against the rapidly changing business landscape that returning CEOs encounter. Past success doesn't guarantee future performance, particularly when the challenges have fundamentally shifted.

The Changed Landscape Problem

A.G. Lafley's experience at Procter & Gamble illustrates this dilemma perfectly. After dramatically increasing P&G's revenue and market value during his first stint as CEO, Lafley returned in 2013 to reignite growth. Despite aggressive cost-cutting measures and divesting more than $20 billion in brands like Duracell and Clairol, P&G saw tepid sales growth and a sluggish share price during his second tenure.

Lafley himself acknowledged this challenge in a 2022 Wall Street Journal opinion piece, writing: "Returning CEOs need to familiarize themselves with the changes that took place in their absence. A lot happened during my three years away from P&G. Consumer needs and wants had shifted."

This represents what we might call the "changed landscape problem"—the business environment evolves rapidly, often making previously successful strategies obsolete. The risk is that returning CEOs may reflexively apply outdated playbooks to new challenges.

Research by McKinsey & Company supports this view. In their study "Why Leadership Transitions Fail," they found that approximately 75% of major organizational transformations fail partly because leaders struggle to adapt to changing circumstances. For returning CEOs, this adaptation challenge is particularly acute, as they must unlearn certain habits and assumptions that previously served them well.

Case Studies: Mixed Results for High-Profile Returns

Beyond UnitedHealth's Hemsley, several high-profile CEO returns in recent years offer instructive examples of the challenges faced by comeback leaders.

Bob Iger at Disney

When Bob Iger returned to Disney in 2022, he faced a dramatically altered entertainment landscape from his previous tenure. Streaming had disrupted traditional media business models, the pandemic had transformed consumer behavior, and an activist investor was demanding changes.

While Iger has made progress—Disney's streaming business achieved profitability and operating margins improved—the company's performance remains below what it commanded during much of his first act when the cable TV business thrived. This illustrates how industry disruption can limit even the most capable returning CEO's ability to recreate past success.

Howard Schultz at Starbucks

Schultz's three stints at Starbucks demonstrate how each return presents escalating challenges. His second tenure beginning in 2008 was largely successful as he guided the company through the financial crisis.

However, his third return in 2022 proved more challenging. Starbucks faced a growing unionization campaign and operational inefficiencies across its stores. Despite his legendary status at the company, Schultz's handpicked successor, Laxman Narasimhan, lasted only 16 months as business performance sputtered.

This pattern suggests diminishing returns with each comeback, as the company's problems become more structurally complex and less amenable to the founder's original vision.

The Legacy Risk

Beyond performance metrics, returning CEOs face a profound personal risk: damaging their legacy. As Jim Citrin of Spencer Stuart bluntly states, "You're very likely not going to be as successful, and your legacy is going to be reduced."

This legacy consideration often goes unacknowledged in board discussions but represents a significant factor both for the returning CEO and for organizational morale. A failed second act can retroactively tarnish the leader's previous achievements and create confusion about the company's direction.

Research published in the Harvard Business Review by Jeffrey Sonnenfeld and Andrew Ward suggests that how leaders exit their roles significantly impacts both their personal legacy and the organization's subsequent performance. For boomerang CEOs, this creates a double jeopardy scenario—they must manage both their return and eventual re-exit carefully.

Alternative Approaches for Boards

Given the statistical evidence against boomerang CEO success, boards should consider alternative approaches when facing leadership challenges:

1. Transitional Leadership with Defined Objectives

Rather than an open-ended return, boards might structure the former CEO's comeback as an explicitly transitional role with specific, measurable objectives and a clear timeline. This approach acknowledges the temporary nature of the arrangement while leveraging the former leader's institutional knowledge.

The Journal of Leadership Studies published research indicating that clearly defined transitional leadership arrangements tend to outperform open-ended returns, particularly when paired with robust succession planning.

2. Advisory Rather Than Executive Roles

Former CEOs can provide valuable guidance without assuming full executive responsibility. Creating structured advisory roles allows the organization to benefit from their experience while still moving forward with fresh leadership perspectives.

This approach preserves the former CEO's legacy while providing continuity and mentorship to new leadership. It also avoids the direct performance comparisons between first and second tenures that often disadvantage returning executives.

3. Paired Leadership Models

Some organizations have successfully paired returning CEOs with complementary executives who bring fresh perspectives and skills. This co-leadership model balances institutional knowledge with innovation and can help bridge the gap between past successes and current challenges.

Research from the MIT Sloan Management Review suggests that dual-leadership models can be particularly effective during periods of significant transformation, combining stability with adaptation.

Learning from Successful Second Acts

While the statistics are discouraging, some returning CEOs have managed to succeed in their second tenure. What distinguishes these rare success stories?

1. Acknowledging Changed Circumstances

Successful returning CEOs explicitly recognize that both the organization and business environment have evolved. Rather than attempting to recreate their previous tenure, they approach the role with fresh eyes.

Steve Jobs at Apple represents perhaps the most successful boomerang CEO in business history. His return was marked not by attempts to recreate his first tenure but by revolutionary new directions with the iPod, iPhone, and iPad.

2. Assembling New Leadership Teams

Effective returning CEOs typically refresh their leadership team rather than reassembling their previous lieutenants. This brings new perspectives while still benefiting from the CEO's institutional knowledge.

3. Mission-Driven Rather Than Ego-Driven Returns

As Citrin noted in the WSJ article, CEOs should return only if they feel "a genuine sense of purpose and duty to right their companies." Returns motivated primarily by ego or legacy protection tend to underperform compared to those driven by organizational mission.

Implications for UnitedHealth and Hemsley

For Stephen Hemsley and UnitedHealth, the historical patterns suggest caution. At 72, Hemsley returns to a company facing not only business challenges but federal investigations and the aftermath of an executive's death—circumstances quite different from his previous tenure.

To succeed where other boomerang CEOs have failed, Hemsley will need to:

Conclusion: Rethinking the Boomerang Strategy

The data on returning CEOs presents a clear challenge to the conventional wisdom that familiar leadership provides a safe harbor during stormy times. While institutional knowledge and established relationships offer short-term advantages, they frequently prove insufficient against the headwinds of changed business environments and heightened expectations.

Boards considering the boomerang CEO option should proceed with clear eyes about the statistical likelihood of underperformance. If they choose this path despite the odds, they should structure the return to maximize chances of success: limited duration, clear objectives, refreshed leadership teams, and robust succession planning.

For investors watching UnitedHealth and other companies with returning CEOs, the historical pattern suggests measured expectations rather than assuming the returning leader will automatically recreate past successes.

Perhaps most importantly, both boards and returning CEOs should remember Jim Citrin's sobering assessment: "You're very likely not going to be as successful, and your legacy is going to be reduced." With this understanding, the decision to return becomes not just a business calculation but a deeply personal one—weighing the opportunity to help a struggling organization against the risk of diminishing one's own legacy.

As UnitedHealth's Hemsley embarks on his second act, he joins a distinguished group of executives who have accepted this challenge and its attendant risks. Whether he can beat the statistical odds remains to be seen, but the broader pattern suggests that in leadership as in life, you can't simply go home again.