From High Performer to Enterprise Leader: What Changes at the C-Suite Level?

The move into the C-suite is more than a simple step up in seniority. It’s an open door into an entirely new way of leading. How can organisations prepare high-potential leaders for the shift into the C-suite landscape?

When executives reach a certain level in their functional leadership roles, the next natural step for many is a C-suite leadership position. They’ve proven themselves through long-term performance: they’ve delivered results, solved problems and helped to build strong teams. Their expertise and knowledge have earned them trust both inside and outside the organisation.   

Yet, what many discover is that the move into the C-suite isn’t simply a promotion. It’s a change in leadership identity. At this level, leaders are no longer responsible only for the success of their own function. They’re expected to contribute to the direction, resilience, reputation, performance, and long-term value of the whole organisation.  

Annelize van Rensburg, Global Chair and Director of Executive Search at Signium in Johannesburg, says,

“This is what makes the transition from high performer to enterprise leader one of the most important leadership shifts an organisation can manage. It’s also one of the easiest to underestimate. Organisations may assume that those who performed well in senior functional roles will naturally adapt to the demands of the C-suite. But the skills and habits that create functional success don’t always translate automatically into enterprise leadership.”  

Four major shifts for leaders entering the C-suite level 

Sheryl Sandberg, author and technology executive, once wrote, “Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.” This is a powerful idea, particularly at the C-suite level, where a leader is tested less by what they can personally direct and more by what they enable across the organisation. 

For rising leaders aspiring to embody this form of leadership, several shifts become especially important. 

1. From functional success to enterprise value 

Perhaps the most obvious shift at the C-suite level is that value isn’t created by making every function stronger in isolation. In fact, treating organisational success as a collection of successful silos often results in complete misalignment across departments.  

A decision may make sense from one functional perspective, but create pressure, risk or unintended consequences elsewhere. A high-performing executive may naturally advocate for what their department needs, but an enterprise leader uses that perspective to help answer a larger question: what will make the whole organisation stronger over time? They’re not afraid to explore this question, even when the answer is uncomfortable.  

2. From control to influence 

Before the C-suite, high performers often get things done through the teams and resources they directly manage. Their authority is clear. 

Van Rensburg explains how this changes: “For senior leaders, much of the work depends on people they can’t simply instruct. Decisions cross departments, involve competing priorities, and require agreement from other leaders who see things through different lenses. The skills of influence and adaptability become essential.” 

3. From certainty to judgement 

High performers are often valued – and promoted – because they solve tangible problems. They define challenges clearly and make confident decisions. 

C-suite leaders frequently face decisions where there is no perfect answer. They must weigh multiple possible outcomes: growth and margin, speed and risk, innovation and stability, short-term delivery and long-term resilience. The work becomes less about having all the answers and more about asking the right questions and exercising sound judgment. 

4. From personal impact to leadership that scales 

High-performing managers create impact through their own energy and ability to get things done – and by guiding teams to do the same.   

Van Rensburg elaborates: “As leaders move into C-suite roles, their impact has to reach further than their own performance. They must use their functional expertise and influence to help others think clearly and stay aligned. When you’re filling a senior role, your leadership must create better leadership around you.”   

What are the capabilities needed for C-suite readiness?  

Many rising executives are highly capable, experienced and respected. The challenge is that some of the behaviours that helped them succeed in their functional roles may need to evolve as they enter higher roles. 

• A leader known for decisiveness may need to create more space for collaboration.  

• One who has built credibility through expertise may need to lead conversations in which they’re not the technical authority.  

• A leader who has been praised for protecting their function may need to become more comfortable with enterprise trade-offs. 

“This is why C-suite readiness can’t be left until the moment a leader is promoted,” says van Rensburg. “If they haven’t been prepared before the transition, the move into enterprise leadership can become a bumpy ride – not only for them, but for the people around them.”  

McKinsey’s work on 21st-century leadership emphasises that succession planning doesn’t stop at identifying who may be next in line. It must also build the character and range of skills required for the next level of responsibility.  

For rising executives, this means developing the capabilities needed to take on a bigger role and lead differently when they get there.  

• The confidence to say no, and the maturity to hear no 

C-suite leaders sometimes need to challenge assumptions, ask thoughtful questions and help the team look more carefully at decisions that may create long-term risk. Just as importantly, they need to accept challenges from others without becoming defensive. 

• Business understanding beyond their own function 

Rising leaders don’t need to become experts in every area of the business, but they do need to understand how the business works. This includes enough commercial, financial, operational and people understanding to contribute outside their own specialist area. 

• Stronger relationship range 

At the enterprise level, influence depends on more than having strong allies. Leaders need to build trust with peers, sceptics, board members and people who see the organisation differently. Being able to work well with difficult or very different people becomes a real leadership skill. 

• Political awareness without political behaviour 

Senior roles come with informal power dynamics, competing agendas and reputational risk. C-suite-ready leaders need to understand these dynamics without being pulled into politically charged behaviour. They must learn to read the room, protect trust and act with integrity. 

• Humility that keeps learning possible 

This can feel like a paradox: the higher leaders rise, the less likely they are to be the expert in every conversation. Humility helps leaders stay open to insight from others, listen without defensiveness, and change their view when the evidence calls for it. This doesn’t make them less decisive; it makes their decisions more thoughtful and better informed.  

• The ability to multiply leadership capacity  

A leader’s impact needs to ripple through others. This means developing capable teams, strengthening the talent around them and creating enough leadership depth that they’re not pulled back into every operational detail. Without this, even a strong executive can become a bottleneck.  

As Van Rensburg puts it: “One of the questions we should be asking about any future C-suite leader is this: have they developed the people around them, or are they still the reason everything works? This is the true sign of leadership qualities.”  

True succession planning: From potential to preparedness 

C-suite readiness can’t be assumed simply because a leader consistently delivers good results. Although performance is an important foundation, it’s only part of the picture. 

“Organisations must give high-potential leaders the chance to build broader experience before they step into enterprise roles,” urges van Rensburg. “This may include executive assessment, coaching, cross-functional projects and exposure to real challenges that stretch how they think and lead.” 

For the leader, the transition is about building on the strengths that helped them rise in the first place. They keep their expertise, but learn not to lead only from it. They continue to deliver, but define value in a broader organisational context. They bring a strong point of view, but also learn to listen and adapt. 

In this sense, true succession planning isn’t about waiting for potential to prove itself at the highest level. It’s about preparing that potential before the promotion, which is when the stakes are highest.