Harvard Business Review Says the Best PE-Backed CEOs Do 5 Things. A Fractional HR Leader Makes All 5 Easier.

The research is in — and it maps perfectly to the case for embedded people strategy.

"Immediate buy." I said as I came across the Harvard Business Review article from AdvantageCEO, about their new book, The 5x CEO. And to be clear - I have no ties to them, or receive anything other than I found it great, interesting, and something I wanted to dive more into. Recently published in the April 2026 issue of Harvard Business Review, the study (by Samantha Allison, Taavo Godtfredsen, and Nada Hashmi) analyzed two years of data on the CEOs who consistently deliver outsized returns. Their conclusion? The top performers excel at five specific behaviors. Five.

Those same five behaviors form the backbone of AdvantageCEO's The 5x Model — a framework built around the essential disciplines that high-performing PE-backed leaders must master.

Here's what stops me cold as a Fractional HR Leader: every single one of those five behaviors has a direct people operations layer. And yet most PE-backed companies especially in that growth-stage sweet spot, are trying to execute on them without a senior HR partner in the room.

Let's talk about that.

The 5x Model: A Quick Breakdown

AdvantageCEO defines the five essential CEO responsibilities as:

1. Strategic Clarity — defining and communicating the most important objectives and value creation drivers

2. Scalable Talent — having A-players in critical roles who can grow with the organization

3. Relentless Focus — allocating resources and attention only to what moves the needle

4. Disciplined Execution — rigorous, consistent implementation with real accountability

5. Energized Culture — an ecosystem of shared purpose, trust, and high performance

The HBR research confirms these aren't just nice-to-haves. CEOs who fail to embed these behaviors into their systems get replaced. (And more than 50% of PE-backed CEOs do get replaced during the investment period. Eeks!)

Where a Fractional HR Leader Changes the Game

Here's what most people miss: three of these five disciplines are majority people work. And the other two? Still have a people layer that most CEOs are under-equipping.

1. Strategic Clarity → Your Fractional CHRO is the translation layer.

You can have a brilliant strategy and still watch it fall apart in execution because your managers don't know how to cascade it, your performance system doesn't reinforce it, and your hiring isn't aligned to it. A Fractional HR Leader ensures that the organizational design, role accountability, and communication infrastructure actually carry your strategy downfield. Clarity doesn't live in the deck. It lives in the operating system of your people.

2. Scalable Talent → This is literally the job.

The HBR study found that top CEOs align talent to growth ambitions — not just headcount needs. That requires a sophisticated understanding of where the organization is going, what capabilities it will need 18 months from now, and whether your current team can get you there. A Fractional Chief People Officer brings talent architecture: org design, succession readiness, leadership development, and the honest conversations most CEOs avoid having about their current A/B/C players. You can't scale talent reactively. You need someone thinking ahead.

3. Relentless Focus → Stop letting people problems steal your attention.

One of the biggest hidden costs in a scaling organization is the CEO time consumed by people dysfunction — the manager who keeps blowing up their team, the comp situation that keeps coming up in 1:1s, the performance issue that no one has documented. A Fractional HR Leader takes that off your plate and handles it with actual expertise. Your focus stays on the work that creates value.

4. Disciplined Execution → Operating rhythms require people infrastructure.

Accountability doesn't happen because you announce it. It requires clear role definitions, performance expectations, calibration processes, and management capability. A Fractional HR Leader builds the people-side operating rhythm that makes disciplined execution sustainable — not just possible in the quarters right after a reorg.

5. Energized Culture → You can't engineer culture without HR.

The HBR research specifically calls out cultures that balance trust with accountability. That's not a vibes thing. That's a systems thing. It's how you hire, how you onboard, how you develop leaders, how you handle conflict, and how you reinforce what "good" looks like. Culture is the sum of every people decision you've made — and a Fractional CPO helps you make those decisions intentionally.

The Fractional Advantage in a PE Environment

Here's where it gets really interesting for PE-backed companies specifically.

You're operating on a compressed timeline. The value creation plan has a clock. You can't afford to hire wrong, lose key talent, or let culture erode because you're too focused on the operational levers. But you also — often — can't justify or don't yet need a full-time CHRO.

Enter the Fractional Chief People Officer.

A senior Fractional HR Leader brings C-suite-level people strategy at a fraction of the cost, embedded into your business with the context and ownership of an insider. They're not a consultant who shows up with a report. They're a partner who shows up in your leadership team meetings, who knows your org chart, who has the hard conversations with your managers, and who builds the infrastructure that outlasts them.

For PE-backed CEOs racing to execute the 5x Model, this is the competative advantage.

The Bottom Line

The research is clear: the CEOs who win in PE environments don't just know the right things to do. They build the systems and routines that make those things happen at scale and beyond their own personal involvement.

People operations is one of the most powerful levers for doing exactly that.

If you're a PE-backed CEO and you don't have a senior HR partner helping you execute on talent, culture, and organizational effectiveness, you're leaving performance on the table. Full stop.

That's what a Fractional HR Leader does. And that's why it works.