Why CEO Turnover Spikes at Year Two — And What the Due Diligence Missed

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65% of PE Firms Replace the CEO During the Hold. 83% Say It Extends the Hold. The Assessment That Cleared the CEO Read the Presentation, Not the Person.

Don L. Gaconnet, CSE III

Founder & Principal Investigator, LifePillar Institute for Structural Identity Sciences

ORCID: 0009-0001-6174-8384 · SSRN Author ID: 7657314

June 2026

The pattern repeats across the industry with structural consistency. The CEO passes the behavioral assessment. The first year looks strong — KPIs tracking, board presentations polished, the operating partner reports alignment. Somewhere around month fourteen, something shifts. Decision-making slows. Follow-through degrades. The presentations remain polished but the substance beneath them thins. By month eighteen, the PE firm initiates a conversation neither party wanted to have. By month twenty-four, the CEO is replaced.

The firm loses two years: the year spent with a faltering CEO and the year it takes to find and onboard the replacement. The hold extends. Returns erode. The deal thesis — the plan the capital was deployed to execute — stalls while the leadership question is resolved.

This is not an occasional failure. It is the industry's dominant outcome.

The Data the Industry Published in 2026

AlixPartners released its 11th Annual PE Leadership Survey in March 2026. The findings confirm what every operating partner already knows from experience:

65% of PE firms report CEO turnover during the holding period. Only 9% say they rarely replace CEOs. CEO turnover spikes at year two. 83% of PE executives say unplanned CEO turnover lengthens holding periods. Nearly half say it reduces returns. 86% of CEO turnover is driven by the private equity firm — not initiated by the CEO (AlixPartners, 10th Annual Survey, 2025).

75% of CEOs exit after a change in control. 54% of those exits occur one to two years following the transaction (AlixPartners / Russell Reynolds Associates, October 2025). The year-two window is not a statistical anomaly. It is the structural consequence of what the assessment missed at close.

The perception gap is documented: 41% of PE executives say the quality of portfolio company senior leadership is a significant challenge. Only 13% of portfolio company leaders agree (AlixPartners, 10th Annual Survey, 2025). A 28-point gap between how the investor reads the executive and how the executive reads themselves.

Mark Gillett, Managing Director and Head of Value Creation at Silver Lake Partners, stated it directly: "There are lots of examples of executives thinking they are doing a great job, but it isn't the plan the sponsor underwrote."

Ted Billies, PhD, at AlixPartners summarized the structural position in March 2026: "Too many private equity firms are still reacting to leadership crises instead of preventing or anticipating them."

The industry knows the problem. The industry publishes the data documenting the problem. The industry continues using the tools that produce the problem.

Why Year Two Is the Spike

Year one is survivable on performance capacity alone. The new CEO — or the founder retained through the transition — has the skills, the experience, and the track record that earned the role. The behavioral assessment confirmed these qualities. The personality test validated the profile. The references verified the history. None of this was wrong. The CEO does have these capabilities.

What the assessment did not measure is the structural cost of carrying these capabilities under the specific load the post-acquisition plan imposes.

The deal thesis does not hold still. Post-acquisition, the CEO must simultaneously execute the operational plan, manage the integration, satisfy board reporting requirements, maintain team stability through uncertainty, absorb the PE firm's operating cadence, navigate the cultural shift from founder-led to sponsor-backed, and sustain personal functioning across all of it. The aggregate structural demand on the person escalates through the first year while the surface performance holds.

By year two, the accumulated structural cost exceeds what the system can sustain. Not because the CEO lacks capability — but because structural capacity is a different variable than performance capability, and no instrument in the current pipeline measures it.

Performance is what the executive does. Structural capacity is what it costs the executive's system to keep doing it. An executive can perform at the highest level while the structural cost of that performance degrades the system's ability to sustain it. The performance holds until it cannot. When it breaks, it breaks suddenly — not gradually — because the structural degradation was invisible to every instrument that was reading the performance layer.

This is why the PE firm sees it "too late." The instruments read the surface. The surface looked fine. The structural degradation was happening beneath the surface, in a domain that no behavioral assessment, no personality profile, no 360-degree survey, and no board presentation can reach.

What the Perception Gap Reveals

The 28-point perception gap between PE executives (41% concerned) and portfolio company leaders (13% concerned) is not a communication problem. It is a measurement problem.

The PE executive evaluates the CEO from the outside — through board meetings, operating reviews, KPI tracking, and direct interaction. This external observation catches signals the CEO's own self-assessment does not: the decision-making that has slowed, the follow-through that has degraded, the presentations that are polished but thinner. The PE executive sees the drift before the CEO reports it.

The CEO evaluates themselves from the inside — through their own perception of their own state. This internal assessment is structurally compromised. The Recursive Reliability Effect (Gaconnet, 2026; SSRN 7657314; DOI: 10.17605/OSF.IO/MVYZT) establishes the mechanism: self-assessment accuracy in human systems under load degrades as a recursive function of structural severity. The deeper the structural failure, the less accurately the system self-reports.

A 10,000-case Monte Carlo simulation quantified the error rates in a near-capacity population at 81.4% domain mismatch (95% CI: 80.7–82.2%). Four out of five executives under structural load misidentify the domain where their primary failure lives. 73.0% minimize the depth. 61.1% are simultaneously wrong about both.

The CEO reporting 13% concern is not being dishonest. The CEO is reporting accurately from inside a system that can perceive 3.6% of its own structural state. The confidence is genuine. The perception it is based on is 3.6% of structural reality.

The PE executive seeing 41% concern is not being pessimistic. The PE executive is reading signals that the CEO's own system cannot produce about itself.

The 28-point gap is the Recursive Reliability Effect measured at the industry level. The executive who matters most to the investment is the executive whose self-report is least reliable about their own structural state.

Why Coaching After the Problem Surfaces Does Not Solve It

The industry's response to the year-two spike has been earlier coaching, more structured feedback, and stronger alignment protocols. AlixPartners recommends "earlier alignment, assessment, and targeted executive support." The coaching industry has built an entire practice around executive performance optimization for PE portfolio company leaders.

The structural problem with coaching as the intervention: the coach asks the executive what they want to work on. The executive answers from inside the same degraded self-assessment. The executive reports goals constructed on 3.6% of structural reality. The coaching targets those goals. The goals are in the wrong domain 81.4% of the time.

Each subsequent coaching engagement follows the same trajectory: new coach, same self-report, same presented domain, same intervention on the wrong layer, same temporary improvement, same return to baseline. The executive accumulates a history of "coaching didn't work for me." The conclusion is structurally accurate — coaching as currently practiced cannot sustain improvement because it operates on the self-report, and the self-report is recursively corrupted.

The failure is not the coach's. It is the input's.

The clinical literature confirms this independently. Savant Care (2025) reports that somatic therapies — body-based interventions that partially bypass the self-report layer — show 45% adherence in high-performing populations versus 28% for traditional cognitive behavioral approaches. The body-based approaches outperform because they do not depend on the executive accurately reporting what is wrong. The body does not produce a performance narrative.

What Independent Structural Measurement Changes

The structural fix for the year-two spike is not a better interview at month eighteen. It is an independent measurement before the structural degradation becomes invisible to the instruments reading the surface.

Independent structural measurement operates on a different principle than behavioral assessment. It does not begin from the executive's verbal narrative. It does not depend on the executive's self-report as primary input. It reads the structural state of the system directly and measures the gap between what the executive reports and what the instrument finds.

The output is not a personality profile. It is not a competency score. It is not a coaching recommendation. It is a written structural engineering report that goes in the file — the same file that holds the financial analysis, the operational assessment, and the legal findings.

The report tells the PE firm what the behavioral assessment structurally cannot: where the executive's load actually lives, what depth it operates at, whether the system can carry what the deal thesis requires, and what will happen at year two if the structural condition is not addressed.

This is cognitive due diligence — the fifth pillar of the due diligence framework. Independent, instrument-based measurement of the person the capital depends on.

Deployed before the close, it tells the board whether the CEO being retained or hired can structurally carry the post-acquisition plan — not whether they have the skills (the behavioral assessment confirms skills), but whether the system sustaining those skills can hold under the specific load the deal will impose.

Deployed during the hold — at the six-month mark, at the twelve-month mark — it reads the structural trajectory before the year-two spike arrives. It measures the gap between surface performance and structural capacity while the gap is still addressable.

The forensic accountant does not wait until the restatement to read the books. The forensic accountant reads the books before the deal closes because the cost of discovery after close is measured in years and returns. The structural assessment of the CEO follows the same logic: measure before the spike, not after.

The Cost of Not Measuring

The mathematics are direct. The average PE hold period is four to six years. An unplanned CEO replacement at year two costs two years — the year with the faltering CEO plus the year to find and onboard the replacement. That is 33% to 50% of the hold period consumed by a leadership failure that the due diligence framework did not measure.

At 11.8x entry multiples, the capital deployed per deal is higher than at any point in history. $1 trillion in US dry powder is under deployment pressure. The cost of a year-two CEO replacement is not abstract — it is a quantifiable erosion of returns on capital deployed at record valuations.

46% of PE firms say unplanned CEO turnover erodes the rate of return on their investments (AlixPartners / Russell Reynolds, October 2025). 38% of portfolio company executives worry about losing their jobs due to disruption — far higher than at companies without PE investment (AlixPartners, 11th Annual Survey, March 2026).

The structural gap in the due diligence framework produces structural losses. The instruments read the presentation. The presentation holds through year one. The structural degradation accumulates beneath the presentation. Year two arrives. The spike hits. The hold extends. Returns erode.

Every pillar of due diligence is instrumented except the person. The cost of that gap is documented in the industry's own surveys, measured in the industry's own data, and acknowledged in the industry's own practitioners' own words. The structural correction — independent measurement of the person's actual capacity, not their presented capability — is the category that does not yet exist at scale in the due diligence framework.

It should.

References

AlixPartners. (2025). 10th Annual PE Leadership Survey.

AlixPartners. (2026). 11th Annual PE Leadership Survey. March 2026.

AlixPartners / Russell Reynolds Associates. (2025). CEO turnover and exit patterns in PE portfolio companies. October 2025.

The Conference Board / Egon Zehnder / ESGAUGE / Semler Brossy. (2025). CEO Succession 2025. November 2025.

Gaconnet, D. L. (2026). The Recursive Reliability Effect. LifePillar Institute. SSRN 7657314. DOI: 10.17605/OSF.IO/MVYZT. Zenodo: 10.5281/zenodo.20099853.

Russell Reynolds Associates. (2026). Global CEO Turnover Index 2025. February 2026.

Savant Care. (2025). High achiever burnout: The hidden mental health crisis.

Woozle Research. (2026). Entry multiples data. April 2026.

Don L. Gaconnet, CSE III

Cognitive Systems Engineer III

Founder & Principal Investigator, LifePillar Institute for Structural Identity Sciences

ORCID: 0009-0001-6174-8384 · SSRN: 7657314

Institute: lifepillarinstitute.org/research · Practice: dongaconnet.com/writings

Lake Geneva, Wisconsin · don@lifepillar.org

Copyright © Don L. Gaconnet, June 2026. All rights reserved. The assessment instrument, its operational architecture, scoring methodology, and all associated protocols are proprietary trade secrets of Don L. Gaconnet and the LifePillar Institute for Structural Identity Sciences.