Why 42% of S&P 500 Firms Still Combine CEO and Board Chair Roles
Board oversight versus decision-making speed creates a persistent governance tradeoff. Most public companies now split the roles, but the pattern still favors unified command in larger firms.
A company's choice between combining the chief executive and board chair roles into one or splitting them across two people reflects a fundamental tension in governance. Combined roles consolidate authority and speed decision-making under one person's vision. Separated roles distribute power, allowing the board to oversee the CEO more independently. As of 2025, most large U.S. public companies had separated the two roles: 39% of S&P 500 firms had an independent chair and about 19% were chaired by a different, nonindependent director, while 42% combined the positions. But this split remains context-dependent, with the largest companies still favoring combined roles paired with additional oversight mechanisms like lead independent directors.
The choice also exposes a gap between what shareholders want and what boards choose. Investors filed 98 proposals in 2026 asking companies to separate the roles—up from 31 the previous year—but these proposals had a median shareholder approval of only about 24%, suggesting that board judgment about this question does not yet command investor consensus. Yet boards retain wide discretion here: most public companies disclose policies that explicitly let the board combine or separate the roles depending on circumstances, rather than following a single mandated structure.
What each model offers
Combining the CEO and chair roles creates what governance experts call 'unified leadership.' One person sets strategy, runs operations, and leads the board. This model streamlines communication, accelerates decisions, and lets the organization speak with a single authoritative voice. The CEO leverages operational knowledge and industry expertise to shape board discussions. In fast-moving industries or during crises, this concentration of decision-making authority can be an advantage.
Separation assigns the CEO to operations and the chair to board governance and oversight. An independent chair can challenge management assumptions, ensure rigorous evaluation of strategic choices, and act impartially during crises or leadership transitions. This model explicitly creates tension between the two roles—the chair represents the board's interests as a check on executive power. Separation also clarifies accountability: directors manage the CEO; the CEO manages the company.
Most S&P 500 and Russell 3000 companies—79% and 71% respectively—disclose policies that explicitly preserve the board's discretion to combine or separate the roles depending on circumstances, rather than committing to one structure.
The trend toward separation accelerates, but large firms still resist
Across the S&P 500, the combined CEO-chair model has declined from 47% of companies in 2020 to 42% in 2025. Independent chairs have grown from 33% to 39% over the same period. The Russell 3000, which includes mid-size companies, shows an even stronger shift: 46% now have independent chairs, compared with only 34% that combine roles.
Company size reshapes this pattern significantly. Among companies with $25 billion to $49.9 billion and those with $50 billion or more in annual revenue, the combined CEO-chair structure fell in the mid-40% to near-50% range as of 2025. This suggests larger, more established firms retain unified command more often, possibly because they pair combined roles with other oversight mechanisms like lead independent directors to manage the governance tradeoff. Smaller firms, facing different competitive pressures and often earlier in their development, more frequently opt for separate roles.
When companies appoint a new CEO through succession, they rarely elect that incoming executive as board chair at the same time. Only about 3% of S&P 500 CEO successions from 2018 to 2025 combined both titles on appointment. This pattern indicates boards have moved toward sequential decision-making: first appoint a CEO, then later—if at all—decide whether to add the chair title.
Shareholders push the question harder, but boards have not budged
Shareholder pressure for chair-CEO separation has intensified dramatically. Proposals requesting separation surged to 98 in 2026, up from 31 the previous year—more than tripling in a single year. These came from multiple constituencies: traditional governance proponents like investor John Chevedden accounted for 71 of these proposals that went to a vote, while activist groups from both left and right filed others.
The voting results, however, reveal limited shareholder consensus. A median of about 24% of shareholders voted for these proposals in 2026, below the low-30% range of average support such proposals have drawn in recent years. Proposals targeting the highest-profile firms showed pockets of stronger support—a National Legal and Policy Center-sponsored proposal at Wells Fargo won nearly 34%, the highest backing of any anti-ESG-sponsored chair-separation proposal in the past three years. Yet none of the chair separation proposals achieved majority support. The gap between proposal filings and voting outcomes suggests that while some investors believe chair separation matters, many shareholders remain unconvinced—or prioritize other governance issues.
This voting split reflects genuine disagreement within the investor community. Some investors prioritize board independence and view separation as a key control on executive power. Others value unified executive authority, especially during periods of strategic transition or competitive pressure. Still others question whether separating roles would meaningfully improve performance or accountability, pointing to mixed academic evidence. The relatively low approval rates suggest that boards' discretionary approach—deciding structure case-by-case—aligns with where most shareholders currently stand.
Why CEO tenure matters more than the structure question
Research on board governance reveals something unexpected: CEO tenure may matter more than whether the CEO also serves as chair. CEOs who hold both roles tend to remain in office longer, by an average of three years, than peers who do not. However, this correlation does not mean combining roles causes stability. Rather, boards may structure leadership this way to support longer-term strategic thinking when they believe the CEO merits extended tenure.
The stability question is consequential for company performance. As leadership cycles compress, companies face risks of repeated strategic resets, erosion of institutional memory, and underinvestment in long-term priorities. Whether the CEO also chairs the board appears less important than whether the board can retain effective leadership long enough to execute strategy.
This finding suggests boards should focus on 'choosing a structure that fits the company's long-term needs' rather than adhering to a single governance ideal. The tradeoff between oversight and decision-making speed is real, but it exists within a larger context of leadership continuity and strategic execution. A separated chair structure with constant board turnover may provide less actual oversight than a combined structure with stable, experienced directors.
“CEOs who hold both roles tend to remain in office longer, by an average of three years, than peers who do not, and this stability may matter more to long-term performance than whether the roles are separated.”
The fallback mechanism: lead independent directors and alternative structures
When companies combine the CEO and chair roles, many employ a lead independent director to balance the concentration of power. This director serves as the board's internal counterweight to the CEO-chair, meeting independently with other directors and sometimes acting as the board's external spokesperson.
The lead independent director role has become increasingly active when it exists. In 2023, 27% of S&P 500 companies reported that their lead independent director serves as the official board spokesperson on governance matters to outside audiences—a jump from 8% in 2022. This expanded role suggests companies are finding ways to strengthen board voice without formally separating the chair position.
Yet adoption of the lead independent director role itself has declined overall: at its peak in 2006, 96% of S&P 500 boards had a lead or presiding director; as of 2025, 61% do. This paradox suggests companies are consolidating around fewer distinct models. Some separate the chair role outright. Others rely more heavily on independent directors in committee chairs and rely less on a separate presiding or lead director. The result is a more heterogeneous governance landscape, with boards choosing structures that fit their specific circumstances rather than gravitating toward a single best practice.
What independent directors earn in salary and equity
The compensation for serving as board chair or lead independent director reflects the additional governance responsibilities these roles entail. Boards recognize that separate chairs and lead directors perform additional work compared to regular independent directors. In aggregate, chair and leadership roles increase director compensation, though specific amounts vary widely by company size, industry, and complexity. S&P 500 boards typically compensate chairs and lead directors with cash retainers above the standard director fee, plus additional equity grants to align long-term interests with shareholders. The practice underscores that boards view these leadership roles as distinct from regular directorship and worthy of differentiated pay.
