A new CEO can arrive with a clear mandate and still have a lot to learn about how the organisation really works. The culture discussed in board meetings may look very different from the one employees experience every day.
Important signals often lie in how decisions are made, what managers tolerate, and which behaviours people rely on when no one is watching. That makes the first 180 days more consequential than they may appear.
The CEO is deciding what needs to change while employees are working out what the new leadership means for them. The board, meanwhile, needs to understand whether the transition is strengthening the organisation or creating disruption that could have been avoided.
So, when is a new CEO wrong about culture? It is rarely about having bad intentions. More often, the problem comes from moving too quickly, misreading what is already working or assuming that a few visible changes can reshape how the organisation operates.
This blog looks at the cultural mistakes new CEOs can overlook, and how the CEO and board can use the first 180 days to understand the organisation before deciding what truly needs to change.
Why are the first 180 days critical for a new CEO?
The first 180 days give a new CEO time to see the organisation before making assumptions about what needs to change. They are learning how decisions get made, where influence sits and what is really working.
Meanwhile, employees and senior leaders are paying close attention to what the new CEO does and what those choices might mean. The biggest New CEO challenges often sit between the strategy and the organisation’s ability to deliver it.
A CEO may have a clear mandate for growth or transformation, but the business may not be ready to move at the same pace.
Moreover, the board has a responsibility to stay close to what the CEO is discovering and to test whether those early observations reflect genuine organisational issues.
It also needs to provide context about the organisation’s history, strengths and relationships that may not be visible from the outside.
These early choices also shape the CEO transition. Moving too quickly can disrupt strengths worth keeping, while waiting too long can leave important issues untouched.
The point of the first 180 days is not to prove how much can be changed. It is to understand the organisation well enough to decide what genuinely needs to change.
Mistakes That New CEOs Make About Culture
A new CEO can see culture as something that needs to change quickly, especially when the business needs a new direction. But culture is rarely that simple. Some behaviours may be holding the organisation back, while others may be helping it perform.
For the CEO and board, the challenge is knowing the difference before making decisions that create unnecessary disruption. The mistakes of a new CEO below often begin when leaders act on assumptions rather than what the organisation is actually showing them.
Trying to Change the Culture Too Quickly
A new CEO may feel pressure to make an early impact, especially when the organisation expects a fresh direction. But changing the culture before understanding it can create problems that are difficult to see at first.
Moving too quickly can disrupt behaviours, relationships and knowledge that support performance. Teams may become unsure about expectations, while managers hesitate to act. That adds to the hidden cost of cultural misalignment, even when the change looks successful on the surface.
The better question is not “What should I change?” but “What actually needs to change?” The CEO and board should protect what works while changing what no longer serves the strategy.
Assuming Culture Starts With the CEO
A new CEO shapes culture, but does not create it from scratch. Culture has already been shaped over years of decisions, leadership habits, incentives, and relationships.
A new CEO cannot change those patterns simply by announcing new expectations. If the systems and behaviours around people still reward the old way of working, the culture will follow.
The CEO and board need first to understand what is already in place, then decide which behaviours and systems need to change to support the strategy.
The board has an important role here. Its institutional knowledge can help the incoming CEO distinguish between long-standing weaknesses and organisational strengths that may not be immediately visible.
Treating Culture as a Branding Exercise
New values, a fresh mission statement or an internal campaign can make change look tangible. But employees pay more attention to what happens when difficult decisions are on the table. They notice what leaders reward, overlook and consistently prioritise.
For the CEO and the board, the real question is whether the organisation’s systems support the behaviours they want.
If leaders ask for collaboration but continue rewarding individual performance, the message quickly loses credibility. Culture starts to shift when everyday decisions match what leadership says matters.
Overlooking the Existing Culture’s Strengths
A new CEO may arrive with a clear view of what needs to change and overlook what is already helping the business perform. Strong customer relationships, trusted teams or a willingness to take ownership may be cultural strengths worth protecting.
The board can provide valuable context here. Directors may have a longer view of the organisation and can help the CEO understand which capabilities, relationships and behaviours have contributed to its success.
The CEO and board need to distinguish between what is outdated and what is valuable. Replacing good habits to signal a new era can weaken the organisation rather than move it forward.
The better approach is to keep what works and change what no longer supports the strategy.
Making Leadership Changes Without Understanding Cultural Impact
A new CEO may change senior roles quickly to build the leadership team they want. Sometimes that is necessary.
But every appointment, removal or shift in responsibility sends a message about what the new leadership values. The risk is greater when those decisions happen before the CEO understands the organisation’s informal dynamics.
Removing a trusted leader, for example, can unsettle teams far beyond that person’s immediate function. The CEO and board need to consider not only whether someone fits the strategy, but also what their departure or appointment will signal across the organisation.
The board should also test whether proposed leadership changes address a genuine strategic need or reflect the incoming CEO’s preferred way of working.
Underestimating Middle Managers
A CEO can align the executive team and still struggle to shift the organisation if middle managers are left out of the transition.
They are often the people who turn strategic decisions into everyday choices, so they see quickly where a new direction works and where it creates friction.
If managers lack context, authority or confidence in the direction, they may default to familiar ways of working.
For a new CEO, listening to this layer of leadership can reveal issues that are easy to miss at the top and help distinguish between cultural resistance and practical barriers to execution.
Ignoring Informal Culture
A CEO can understand the formal structure and still miss how the organisation really operates. The important signals may lie in who people turn to for advice, how decisions are influenced, and what happens when formal processes get in the way.
These informal patterns often carry more weight than leaders expect. A new CEO who overlooks them may push changes that look sensible on paper but struggle in practice.
Paying attention to these networks gives the CEO and board a clearer picture of where the organisation has real influence, trust and resistance.
Prioritising Quick Wins Over Cultural Trust
Quick wins can show that a new CEO is willing to act, but moving too fast can send the wrong signal. A decision that looks efficient from the top may leave employees wondering why it happened and what comes next.
Trust builds when people see consistency between leadership’s decisions and its stated direction. For the CEO and board, the better test is whether an early action strengthens confidence in the transition rather than simply proving that change is happening.
Failing to Listen to Employees
A new CEO cannot understand the organisation from the executive floor alone. Employees often see operational friction, weak processes and cultural tensions before they reach senior leadership. Listening to them can reveal what is actually getting in the way of the strategy.
When CEOs dismiss those signals, the impact can extend beyond morale. People who feel unheard may disengage or eventually leave, making retention one useful signal of deeper organisational misalignment.
For the CEO and board, listening is not about agreeing with every concern; it is about seeing risks and realities that may not appear in leadership reports.
Believing Culture Can Be Changed Without Changing Systems
A CEO can ask people to work differently, but old systems can pull them back into familiar habits.
If incentives, decision rights, reporting structures or performance measures still reward the old way of working, cultural change will struggle to take hold.
For the CEO and board, the question is whether the organisation’s systems support the behaviours the strategy now requires. Culture becomes more credible when the way people are measured, rewarded, and given authority aligns with what leaders expect of them.
The First 180 Days: A Better Cultural Leadership Approach
The first 180 days give the CEO and board time to understand how the organisation really works before deciding what to change. That becomes even more important when company challenges are already putting pressure on strategy and execution.
The aim is not to make the culture look different simply because a new CEO is in place. It is to understand what is helping the business, where things are getting stuck, and what needs to change for the organisation to move forward.
Listen and Learn
A better cultural leadership approach begins with hearing what rarely makes its way to the boardroom.
Early conversations can help a new CEO test what the reports are saying, understand where work gets stuck and see how leadership decisions are playing out across the business.
The board can add important context by helping the CEO understand how the organisation reached its current position. Directors can also challenge early assumptions when the CEO’s outside perspective risks overlooking established strengths or relationships.
The point is not to gather endless opinions. It is to notice patterns. If the same issue keeps coming up in different parts of the organisation, it is worth looking into before deciding that a broader cultural change is needed.
Diagnose and Prioritise
A better cultural leadership approach does not try to fix everything at once. Once the CEO has a clearer picture of the organisation, the real task is to work out which cultural issues are actually getting in the way of performance or the strategy.
Not every complaint needs attention from the top. The CEO and board should focus on the issues where a behaviour change can make a real difference.
The board can test the diagnosis by asking whether a perceived cultural problem is actually a leadership, governance, capability, or operating model issue. This helps prevent culture from becoming a catch-all explanation for problems that require a different response.
Align Leadership
A better cultural leadership approach starts with the board and executive team clarifying what the organisation needs from its culture.
That means agreeing on the behaviours the strategy requires, where leadership may need to change and what they will hold each other accountable for.
Strong board-executive alignment matters because people notice when leaders are pulling in different directions. When the board and executives are aligned, the CEO can make cultural decisions with greater confidence.
The board should also ensure that alignment does not mean automatic agreement. Its role includes testing assumptions, challenging the pace of change and asking what valuable organisational strengths should remain intact.
Employees also get a clearer sense of what the new direction means for how the organisation works.
Begin Behavioural Change
A better cultural leadership approach is to make a few meaningful changes in how people work. Rather than rolling out another broad initiative, the CEO can focus on behaviours that matter to the strategy, such as how leaders make decisions, take responsibility and respond when challenged.
People will notice what leaders actually do. Changes in meetings, decisions and everyday leadership carry far more weight than another message about the culture the organisation wants.
The board also has a role in reinforcing these expectations through its relationship with the CEO and its own conduct. Cultural change becomes more credible when leadership behaviour remains consistent under pressure.
Institutionalise
A better cultural leadership approach makes new behaviours part of the way the business operates.
They should show up in leadership expectations, performance reviews, succession decisions, and important business choices, rather than depend on the CEO to push them forward.
The board should monitor whether these changes are becoming embedded without turning cultural oversight into operational management. It can ask whether the behaviours support the strategy and whether the organisation has retained the strengths that made it effective.
The real test comes later, when the transition no longer feels new. If those behaviours still shape decisions during leadership changes and periods of pressure, they have become part of how the organisation works.
How Can New CEOs Tell if Culture Is Actually Changing?
You will not see a culture shift in a new values statement. You see it when people behave differently, especially when things get difficult. Watch what happens when priorities clash, problems surface, or someone challenges a decision.
Look at the managers and teams closest to the work. Are they making decisions with more confidence? Are they raising problems sooner? Are people willing to question an approach without waiting for the CEO to step in?
Those signs tell you far more than a culture survey alone.
Leadership communication is another useful test. When leaders stay consistent in what they say and do, people begin to trust the direction they set. When the message changes from one meeting to the next, that trust becomes harder to build.
The board should assess whether these behaviours hold up under pressure. That is when you find out whether the culture has really changed or whether the organisation has become better at talking about it.
Leading Culture to the Next Stage of Change
The first 180 days are not about showing how quickly a new CEO can change the culture. They are about working out what is worth keeping and what needs to change for the strategy to move forward.
Getting that right can avoid unnecessary disruption and build trust with the board and the wider organisation.
The bigger risk is making decisions without seeing the full picture. When a new CEO is wrong about culture, the fallout can go well beyond employee sentiment. It can affect leadership alignment, retention, decision-making and, ultimately, execution.
A CEO transition is a good time for the board and leadership team to step back and ask whether culture, leadership and strategy are still working together.
SageFlow provides an independent strategic perspective for boards and executive teams navigating significant leadership transitions. It helps leaders question assumptions, identify areas of misalignment and assess whether the organisation has the leadership capability, cultural strength and organisational readiness to support its next phase.
The objective is not to prescribe a standard cultural change programme. It is to help boards and executive teams understand what should be protected, what needs to evolve, and where greater alignment may be required to keep strategy and execution connected.
If your organisation is entering a new phase of leadership, the conversation does not have to start with changing the culture. It can start with understanding what is already there and deciding what is worth changing.
Talk with SageFlow about gaining a clearer view of where leadership, culture governance and strategy need to align before the next phase of change.
