The First 100 Days: Why New CEO Communications Determine Long-Term Authority
The first 100 days of a new CEO's tenure are not a grace period. They're the period in which the people around that leader form the views that will be hardest to shift later — about whether they're worth following, whether they understand the organisation, and whether the change is going to be good or bad for them personally. Those views, once formed, shape the CEO's authority for the rest of their tenure.
Most organisations treat CEO succession communications as event with two key moments: the announcement of the outgoing CEO's departure and the announcement of the incoming CEO's appointment. Both are managed carefully. Both are a small fraction of the actual communications challenge.
Why the announcement is ten percent of the problem
Appointment announcements are well understood. The language is agreed, the quotes are approved, the market disclosure obligations are met, the media is briefed, the internal message is sent. Boards and outgoing CEOs typically handle this moment competently. It's a bounded, controlled communications event.
The communications work that actually determines the outcome of a CEO transition begins after the announcement and runs for months. It operates across multiple audiences simultaneously, through channels that are largely informal and therefore harder to manage, and it shapes perceptions that are far more consequential than the initial appointment announcement.
A CEO succession communications plan that consists primarily of announcement management is not a plan. It's a starting point.
The internal audience problem
The incoming CEO's most important audience in the first 100 days is the organisation's own leadership layer — the executives, senior managers, and high-performing people at every level whose commitment determines whether the transition succeeds.
This audience is forming a view based on everything they observe, not just what the CEO says formally. How the new CEO spends their time signals what they think matters. Who they listen to and who they don't signals what kind of leader they'll be. What they leave unchanged and what they question signals whether they've genuinely assessed the organisation's situation or arrived with a predetermined agenda. What they say about the outgoing CEO — and how they navigate the inevitable dynamics of being compared — signals whether they're secure enough in their own authority to be generous.
None of this is a PR problem. It's a leadership communications problem, and it requires the same deliberateness that the formal announcement received. The incoming CEO who operates in their first 100 days without a clear communications strategy — not a PR plan, a genuine leadership communications strategy — is leaving those perceptions to form by default. The perceptions that form by default are rarely the ones that build authority.
The external audience problem
For ASX-listed companies and large private organisations, the incoming CEO is simultaneously managing a second audience: investors, analysts, major customers, regulators, and the financial media. This audience is assessing one primary question: does this person have the credibility and judgment to deliver on whatever the board said when they appointed them?
The answer to that question is formed in the first 100 days through a combination of formal signals — investor briefings, results presentations, any major strategic announcements — and informal ones — how the CEO handles unexpected questions, how they perform under media pressure, what they choose to say and not say in the first months in role.
Leadership transition communications for an incoming ASX CEO or large-company CEO is not primarily a media relations exercise. It's a credibility construction exercise. The communications decisions — what to communicate and when, to which audiences, through which channels, at what level of detail — either build that credibility systematically or leave it to chance.
What a new CEO communications plan actually contains
A genuine new CEO communications plan covers the period from appointment through to the end of the first 100 days and addresses three things that most plans miss.
First, an audit of the inherited communications environment: what the outgoing CEO's key audiences believe about the organisation's situation, where confidence is strong and where it's fragile, what expectations have been set that the incoming CEO will be held to. The incoming CEO doesn't arrive on a blank slate. They arrive into a set of existing perceptions that their communications either confirms, adjusts, or contradicts.
Second, a sequencing plan for early stakeholder engagement designed around credibility-building rather than box-ticking. Most incoming CEOs do a listening tour. Most listening tours are poorly designed — a series of polite conversations that don't generate the genuine insight or the genuine relationships they're nominally intended to create. A well-designed stakeholder engagement program in the first 100 days has a clear strategic logic: which audiences most need to form a positive early view, what those audiences most need to hear, and how the incoming CEO demonstrates that they've actually listened.
Third, a narrative for the transition itself — a clear, credible account of why the change is happening, what it means for the organisation's direction, and how continuity and change are balanced. This narrative needs to work simultaneously for internal and external audiences and needs to hold up over time, not just in the announcement.
The organisations that manage CEO transitions well don't treat the appointment announcement as the finish line of the communications work. They treat it as the starting gun.