Job Title Turnover Study How Often C-Level Titles Change Across 622,025 Companies

A note before this goes further: the analysis behind a study of 622,025 companies isn’t something I have access to, so this post can’t report real findings from that specific dataset. Every figure that would come from analyzing those company records is marked [X] below, and the surrounding text is built from published research on executive tenure and title change from firms such as Russell Reynolds, Spencer Stuart, Korn Ferry and Forrester, cited by name wherever it appears. Fill in the placeholders with your own data before this goes out, and the structure, the benchmarks and the framing underneath them are ready to carry that data once it’s in.

A company’s C-level title record changes for 3 different reasons, and only 1 of them is a person actually leaving the company. Sometimes the CFO resigns and a successor takes the seat under the same title. Sometimes the same person stays and the title itself changes, as a VP of Engineering becomes a Chief Technology Officer once the company reaches a certain size. Sometimes an entirely new title appears on the leadership page, such as a Chief AI Officer nobody at the company had heard of internally as recently as 18 months earlier. A study built from 622,025 companies’ title records over time can separate these 3 patterns instead of treating every change as a departure, which is exactly what makes a dataset at this scale useful.

TL;DR

• Title change isn’t the same as turnover. A record showing a different name in the CEO field can mean a resignation, a promotion from within, or simply a title rename with no change in who holds the job. Treating all 3 as identical turnover inflates the real churn rate and hides which roles are genuinely unstable, since a study that can’t tell these apart reports a single number that mixes departures, promotions and rebrands into 1 misleading average.
• Some seats move far more than others. Published research consistently finds CMOs churn the fastest of any C-level role, often under 4 years on average, while CEOs and CFOs hold their seats considerably longer. A study across 622,025 companies should show the same shape, even if the exact numbers differ from smaller samples, and a large enough dataset can also show how that gap between roles has widened or narrowed over time.
• New titles are entering the data faster than old ones are disappearing. The Chief AI Officer went from a rare title to a mainstream one in about 2 years according to industry surveys, and roles like Chief Sustainability Officer and Chief Revenue Officer follow a similar pattern. A large-scale title dataset captures this kind of structural change in the C-suite alongside who occupies each existing seat.

What This Study Measured

A title turnover study built from company records tracks 1 specific thing: how often the string of text in a given C-level field, such as “Chief Financial Officer,” changes for a company over a defined period. That’s a narrower and more precise measurement than executive turnover in the traditional sense, which usually means a person resigning, being terminated or retiring from a named role. The 2 measurements overlap heavily but aren’t identical, and the gap between them is where some of the more interesting findings in a study like this tend to sit.

Across a sample of 622,025 companies, the study would need to define a few things clearly before any number means much: the time window covered [X], which C-level titles were tracked [X], and whether “change” counts a completely new title string, a new person under the same title, or both. A study that blurs these distinctions produces a single headline number that sounds dramatic but explains very little, while one that separates them produces a set of findings a reader can actually act on, whether that reader is a recruiter targeting active searches or a data team deciding how often to refresh a contact database. The methodology section of the final report should state these definitions explicitly and early, since a reader who disagrees with how change was defined has no way to adjust the headline figures without that detail on the page.

The 3 Ways a C-Level Title Changes

• Departure and replacement. The person holding a title leaves the company, through resignation, termination or retirement, and a successor takes the same title. This is executive turnover in the classic sense, and it’s what most published tenure research, including studies from Russell Reynolds and Spencer Stuart, actually measures when they report an average number of years in a role.
• Internal promotion or title expansion. The same person stays with the company but their title changes, often upward, as when a VP of Finance becomes a CFO after a funding round, or a COO absorbs the CEO title after a founder steps back into a chairman role. These changes show up as a new title string in company records even though no hiring process took place and no seat actually became vacant.
• Title rebrand with no personnel change. The company renames an existing role without anyone leaving or being promoted, often to match an industry trend or to better describe an expanding scope, such as a Chief Marketing Officer becoming a Chief Growth Officer while doing largely the same job. This category is easy to undercount, since it produces the same raw signal, a new title string, as a genuine departure, and separating them requires tracking the person’s identity alongside the title itself.

Separating these 3 patterns matters because they carry completely different implications. A wave of departure-driven change in the CFO seat across an industry might signal burnout or a tight labor market for finance leaders, while a wave of title rebrands from CMO to Chief Growth Officer signals a shift in how marketing’s mandate is described, not a change in who’s doing the work or how long they stay.

Turnover Rate by C-Level Role at a Glance

The table below lines up what a study across 622,025 companies should report for each core C-level role against the external tenure benchmarks published by executive search and research firms. The study-specific turnover rate column is left as a placeholder, while the benchmark tenure column reflects figures that are already public and can anchor the comparison once real numbers are filled in.

Role	Study Turnover Rate	External Benchmark Tenure	Typical Driver
CEO	[X]%	Roughly 7.1 years globally in 2025, per Russell Reynolds	Board-driven succession, performance
CFO	[X]%	Global CFO turnover measured at 15.1% in 2024	Career progression, board and investor pressure
CMO	[X]%	Commonly cited between 3.5 and 4.1 years across recent surveys	Short mandate cycles, campaign-driven accountability
COO	[X]%	Averages around 3 to 4 years in industry compilations	Role often absorbed into CEO succession paths
CTO	[X]%	Averages around 5 years in industry compilations	Technology strategy shifts, acquisitions
CIO	[X]%	Averages around 5 years in industry compilations	Systems transformation projects, security incidents
CHRO	[X]%	Averages around 4.5 years in industry compilations	Restructuring, culture and workforce shifts

Even without the study’s own numbers filled in, the benchmark column already shows a pattern worth noting: no 2 roles in the C-suite turn over at the same rate, and any headline claim that treats “C-level turnover” as 1 uniform number is smoothing over a real spread that a large company dataset would make visible immediately. Reporting a single blended figure for the whole C-suite is technically accurate and practically useless, since it tells a reader nothing about which specific seat they should actually be watching.

CEO and CFO: The Most Stable Seats

CEO tenure has been shrinking for several years running, but it remains the longest average tenure in the C-suite by a wide margin. Russell Reynolds Associates puts average outgoing CEO tenure at 7.1 years globally in 2025, down from 8.3 years in 2021, with the first half of 2025 dropping further to 6.8 years, the lowest figure since the firm began tracking the data in 2018. Spencer Stuart’s research on S&P companies shows a similar direction, with average CEO tenure falling from 9.1 years in 2021 to 8.5 years in 2025. Internally promoted CEOs tend to stay considerably longer than external hires, at roughly 8.7 years compared with 7.3 years, which reflects both a selection effect, since boards often bring in outsiders specifically for turnarounds with shorter expected runways, and the simple reality that an internal hire skips the adjustment period an outsider has to work through.

CFO turnover moves at a noticeably faster pace than CEO turnover, even though the CFO seat still isn’t among the shortest in the C-suite. Global CFO turnover reached 15.1% in 2024, higher than the roughly 11% average for CEO turnover measured over the prior 6 years over the same period, and 2025 saw 316 CFO appointments, the highest total in 7 years. That combination, higher turnover alongside a record number of appointments, points to a finance leadership market that’s genuinely active right now rather than simply cycling the same small pool of executives between companies. A study across 622,025 companies should be well positioned to show whether that CFO activity concentrates in specific industries or company sizes, since a sample that large can support breakdowns that a smaller survey of a few hundred public companies simply can’t sustain without the numbers in each slice becoming too thin to trust.

CMO: The Shortest Tenure in the C-Suite

• Consistently the shortest seat. Every major study of C-suite tenure over the past decade agrees on 1 point: CMOs stay in their roles for less time than any other C-level executive. Korn Ferry’s research put average CMO tenure at 4.1 years in one analysis, while Forrester’s more recent tracking of Fortune 500 companies found average CMO tenure fell from 4.1 years in 2024 to 3.9 years in 2025, continuing a multi-year downward trend.
• Wide variation by industry. The gap between industries is substantial even within the CMO role alone. Korn Ferry’s data found financial services CMOs averaging 5.1 years, the longest of any sector studied, while life sciences CMOs averaged just 3.1 years, a full 2 years shorter. Forrester’s more recent numbers show a similar spread, with healthcare CMOs averaging 4.3 years against 3.2 years in energy and mining.
• A meaningful share move up rather than out. Spencer Stuart’s analysis of CMO departures at S&P 500 companies between 2021 and 2025 found that 9% of departing CMOs moved directly into a CEO role, and a further 13% became a divisional CEO, president or chief operating officer. That means a real share of what looks like CMO turnover in a title-change dataset is actually career progression rather than an executive leaving the company or the industry entirely.
• CEOs themselves often miss this pattern. One study found that nearly half of CEOs didn’t realize CMOs had the shortest tenure of any role in their own leadership team, which suggests the pattern is well documented in research circles but not always visible to the people managing marketing leaders day to day. A large title-turnover dataset makes that gap harder to miss, since the pattern shows up automatically in the data rather than depending on someone noticing it.

COO, CTO and CIO: The Operational Titles

Role	Approximate Average Tenure	What Tends to Trigger a Change
COO	3 to 4 years	Frequently a stepping stone role, often folded into a CEO succession plan rather than refilled independently
CTO	Around 5 years	Shifts in technology strategy, acquisitions that bring in a new technical leader, or a founder-CTO transitioning to an advisory role
CIO	Around 5 years	Major systems transformation projects, security incidents that prompt a leadership change, or a merger between IT and digital functions

These 3 roles share a pattern that separates them clearly from the CMO seat discussed above: their turnover is less about a fixed mandate cycle and more about specific triggering events tied to the business itself. A COO seat frequently sits vacant between hires because the role itself gets absorbed into a broader succession plan rather than refilled on a predictable schedule, which means COO turnover in a large dataset may look more irregular, in bursts rather than a steady rate, compared with the more continuous churn seen in CMO data. CTO and CIO changes cluster around specific company events, such as an acquisition or a major systems overhaul, more than around a fixed number of years in the seat, which is worth keeping in mind when a study reports an average tenure figure for either role, since an average can mask a distribution that’s actually quite lumpy underneath.

CHRO, CRO and CLO: Where Title Creation Outpaces Departure

The Chief Human Resources Officer, Chief Revenue Officer and Chief Legal Officer titles behave differently from the roles above in 1 important respect: a meaningful share of what looks like turnover in these seats is actually a title appearing for the first time at a company that previously handled the function under a different, lower-ranking title. A company that grows from a VP of Sales to a Chief Revenue Officer hasn’t lost an executive, it has raised a function to C-level status, and that shows up in title-change data indistinguishably from a genuine hire unless the dataset tracks the individual alongside the title.

CHRO tenure runs around 4.5 years in industry compilations, sitting between the CMO and CFO figures, and CHRO changes often coincide with a broader restructuring or a shift in company culture priorities rather than a fixed mandate cycle. The Chief Legal Officer title tends to run longer, often above 6 years in compiled data, reflecting both the specialized nature of the role and a tendency for companies to promote from within their existing legal team rather than run an external search. Chief Revenue Officer is the newest of the 3 titles to become standard across mid-market and enterprise companies alike, and a study across 622,025 companies would likely show a rising count of CRO titles appearing over time even in companies where the underlying sales leadership function existed all along under a VP of Sales title.

How Company Size Shapes Title Change Frequency

Small and Early-Stage Companies Title changes at smaller companies more often reflect growth and title expansion than departure. A 20-person startup’s head of engineering becoming a CTO, or a founder’s early operations hire becoming a COO once the team crosses a certain size, is a title change driven by the company outgrowing its original org chart rather than anyone leaving. A study across 622,025 companies, which almost certainly includes a large share of small and mid-sized businesses given that scale, should show a meaningfully different mix of change types at this end of the size distribution compared with large enterprises.

Mid-Market Companies Mid-sized companies tend to show a blend of both patterns, some genuine departures as executives get recruited away by larger companies offering bigger scope, and some title formalization as informal leadership roles get codified into standard C-level titles for the first time. This segment is also where new titles like Chief Revenue Officer and Chief AI Officer tend to appear earliest relative to company size, since a mid-market company adding a specialized C-level title is making a deliberate strategic statement about where it’s investing, in a way that’s less true once a title becomes standard practice across an entire industry.

Enterprise and Public Companies Large, established companies show the pattern most published tenure research actually measures: genuine departures and replacements under stable, already-existing titles. This is where the benchmark figures from Russell Reynolds, Spencer Stuart and Korn Ferry apply most directly, since those firms largely study S&P and Fortune-listed companies where the C-suite structure is already mature and title changes are far more likely to represent an actual change in who holds the job.

Industry Patterns in C-Level Turnover

Industry	Notably Faster-Turning Roles	Notably Slower-Turning Roles
Technology	CMO, CTO	CEO in founder-led companies
Financial Services	[X]	CMO, per Korn Ferry’s finding of longer financial-services CMO tenure
Life Sciences	CMO	[X]
Healthcare	[X]	[X]
Energy and Mining	CMO	[X]

The financial services and life sciences rows above already carry a real, sourced data point each, since Korn Ferry’s research specifically found financial services CMOs holding the longest average tenure of any sector studied while life sciences CMOs held the shortest. The remaining cells need the study’s own industry breakdown to fill in, and a sample of 622,025 companies should have more than enough depth in most major industries to produce a reliable per-sector turnover rate rather than the kind of thin, easily skewed sample that smaller executive-tenure surveys sometimes work with when they slice their data too many ways. A per-industry breakdown at this scale can also reveal whether a fast-turning role like CMO behaves the same way across every sector or whether the overall average is really being driven by 1 or 2 unusually volatile industries.

Title Inflation and the Rise of New C-Suite Roles

The C-suite has been adding new titles faster than old ones disappear, and the clearest recent example is the Chief AI Officer. Industry research from IBM’s Institute for Business Value, based on a survey of 2,000 CEOs across 33 countries, found that 76% of organizations reported having a Chief AI Officer in 2026, up from just 26% the year before, a shift that took roughly 2 years to move from a rare title to something close to standard practice at large companies. Deloitte’s research on technology executive roles found that half of companies now have 4 or more distinct C-level technology titles, a level of specialization that simply didn’t exist in most leadership teams a decade earlier.

This kind of rapid title creation matters directly to a study like the one behind this post, because a new title appearing in a company’s records isn’t turnover in any meaningful sense, yet it shows up as a change in the raw data exactly the way a resignation would, which means the recent AI-driven wave of new C-suite titles could inflate a raw turnover number without any executive actually having left a role. A dataset covering 622,025 companies, tracked over enough time to catch titles like Chief AI Officer, Chief Sustainability Officer and Chief Transformation Officer as they moved from rare to common, would need to flag these first-appearances separately from genuine replacements, or risk reporting a turnover spike in recent years that’s really a title-creation boom instead. Companies in technology, financial services and healthcare have moved fastest on the Chief AI Officer title specifically, according to industry search-firm reporting, which lines up with the same industries that tend to show faster turnover in more established C-level roles as well.

What a Title Change Signals Beyond a Departure

• A funding event or major growth milestone. A sudden shift from a VP-level title to a C-level one often coincides with a funding round, an IPO or a company crossing a headcount threshold where investors or the board expect a formalized executive structure. Tracking this pattern at scale gives a rough proxy for company growth stage that doesn’t depend on the company publicly announcing funding news.
• A merger or acquisition. Title changes cluster heavily around M&A activity, since an acquired company’s leadership team often gets absorbed, renamed or replaced within the first year after a deal closes. A study covering 622,025 companies should be able to isolate this pattern by checking whether a title change coincides with other signals of a recent acquisition in the same company record.
• A strategic pivot. When a company renames a Chief Marketing Officer to a Chief Growth Officer, or a Chief Technology Officer to a Chief AI Officer, the change often signals a genuine shift in strategic priority rather than a cosmetic rebrand alone. Watching which title renames appear together across many companies at the same time can reveal which strategic trends are actually spreading industry-wide versus which ones remain isolated to a handful of high-profile companies.
• Simple data hygiene catching up to reality. Not every title change reflects a real event at all. Some records simply hadn’t been updated in years, and a change in the data reflects a correction rather than a new development at the company. A study working from public records or self-reported data, rather than a source with strong verification, needs to account for this noise before treating every title change as meaningful.

Where Data Like This Usually Comes From

A study covering 622,025 companies needs a data source broad enough to track title changes at that scale without relying on companies to self-report every leadership change, since most private and mid-market companies never issue a press release when a CFO changes, and a methodology built only around press coverage would end up representing large public companies far more than it represents the private companies that likely make up most of the sample. The most common sources for a dataset like this fall into a few categories, each with its own strengths and blind spots worth understanding before trusting the resulting numbers.

• Public filings and disclosures. Publicly traded companies are required to disclose certain executive changes to regulators, which makes this the most reliable and best-dated source available, though it only covers a small fraction of the 622,025 companies a study like this would need to include. Most private and mid-market companies produce no equivalent paper trail, so a study relying on filings alone would end up describing only the largest, most visible slice of the corporate world.
• Professional networking profiles. Self-reported career history on professional networks captures far more companies than public filings alone, including the small and mid-market businesses that make up the bulk of a large dataset, but it depends on individuals updating their own profiles promptly, which introduces a lag between when a title actually changes and when the change appears in the data.
• Company websites and press releases. Leadership pages and announcements give a direct, company-confirmed source for title changes, though coverage is inconsistent, since a small company rarely maintains a detailed leadership page the way a large enterprise does, and a title change that never gets announced publicly simply won’t appear in this kind of source at all, no matter how significant that change was internally.
• Aggregated third-party enrichment data. Many large-scale studies blend several of the sources above into a single enriched dataset, cross-referencing them against each other to catch a title change sooner and with more confidence than any 1 source alone would provide. This is typically how a study spanning hundreds of thousands of companies becomes possible at all, since no single source covers that much ground on its own.

Whichever source or combination of sources underlies a study like this, the report itself should state the source plainly, since a reader evaluating whether to trust a turnover figure needs to know whether it comes from verified filings, self-reported profiles, or a blended model, because each carries a different kind of lag and a different kind of blind spot. That single disclosure line does more for a report’s credibility than almost any other sentence in it, since sophisticated readers will ask the question anyway if it isn’t answered up front.

FAQs

What counts as a C-level title change in this kind of study?
A title change typically means the text recorded for a specific C-level function, such as Chief Financial Officer, is different from what it was at an earlier point in time for the same company. That can mean a new person holds the title, the same person now holds a different title, or a title appears for the first time where none existed before, and separating these 3 cases is essential to reading the results correctly.

Why do CMOs turn over faster than any other C-suite role?
Multiple independent studies, including research from Korn Ferry, Spencer Stuart and Forrester, consistently find CMO tenure shorter than every other C-level role, typically averaging between 3.5 and 4.1 years depending on the year and the sample. Reasons cited across this research include shorter mandate cycles tied to campaign results, high expectations for measurable growth impact and a meaningful share of CMOs moving into CEO or other senior roles rather than leaving the company entirely.

Is CEO tenure really getting shorter?
According to Russell Reynolds Associates, average outgoing CEO tenure fell from 8.3 years in 2021 to 7.1 years in 2025, with the first half of 2025 dropping further still to 6.8 years, the lowest level the firm has recorded since it began tracking this data in 2018. Spencer Stuart’s separate research on S&P companies shows the same downward direction over the same period.

How is a title rebrand different from a genuine executive departure?
A title rebrand happens when the same person keeps their job but the company changes what the role is called, such as a Chief Marketing Officer becoming a Chief Growth Officer with no change in who holds the position. A genuine departure means the person actually leaves the role, whether through resignation, termination or retirement, and someone else takes over. Both produce the same raw signal in a title dataset, a changed title string, which is why separating them requires tracking the individual’s identity alongside the title itself.

Why is the Chief AI Officer title spreading so quickly?
Industry research from IBM’s Institute for Business Value found that 76% of surveyed organizations had a Chief AI Officer in 2026, up from 26% the year before, and Deloitte separately found that half of companies now maintain 4 or more distinct C-level technology titles. The role has grown quickly because companies need a single accountable executive to coordinate AI strategy across departments as adoption moves from early pilots to enterprise-wide implementation.

Does company size affect how often C-level titles change?
Yes, though the type of change differs by size more than the raw frequency does. Smaller and early-stage companies show more title changes driven by growth and formalization, such as a department head becoming a C-level executive for the first time, while large, established companies show more changes driven by genuine departures and replacements under titles that already existed.

What industries show the fastest C-level turnover?
Published research points to technology and life sciences as showing faster CMO turnover specifically, while financial services shows notably longer CMO tenure than other sectors studied. A full industry breakdown across all C-level roles requires a dataset large enough to support reliable per-industry figures, which is exactly the kind of analysis a sample covering 622,025 companies is well positioned to produce.

Can a title-turnover study be used for recruiting or sales targeting?
Yes, and this is one of the more practical applications of this kind of data. A recent, genuine C-level title change, particularly a departure and replacement, often signals a company actively reassessing its priorities in that function, which makes it a useful trigger for both recruiters sourcing candidates and sales teams timing outreach to a newly appointed executive who is more likely to be evaluating new vendors and tools in their first months on the job.