When Should a Mid-Market Company Actually Start CEO Succession Planning?

CEO Succession Planning: When Should a Board Start?

The call almost always comes from a board member, not from the CEO. The CEO has quietly told the board they want to be done in eighteen months, the board has just done the arithmetic, and someone has realized that eighteen months is not the comfortable runway it sounded like in the room.

It is not. By the time a board is having that conversation, the useful part of the window has already closed.

Here is what most mid-market boards get wrong. They think CEO succession planning is a search that starts when the CEO gives notice. It is not a search. The search is the last third of it. The first two thirds are the part that decides whether you end up with a leader you chose or a leader you settled for, and that part cannot be compressed no matter how much you are willing to spend.

PRL International is a retained executive search firm serving Pittsburgh and Western Pennsylvania, specializing in senior-level placements in mid-market manufacturing, energy, and industrial companies. In more than thirty years of retained search, the pattern we see most often is not a board that refuses to plan. It is a board that plans on a timeline built for a role one level down.

When Should a Mid-Market Company Start CEO Succession Planning?

A mid-market company should start CEO succession planning at least twenty four months before the expected transition, because the search itself runs six to nine months and the work that determines whether a viable internal candidate exists takes far longer than that.

The twenty four month figure is not padding. Work backward and it accounts for itself. An external CEO search at this level runs six to nine months from engagement to signed offer, and that assumes a clean process. Add sixty to ninety days of notice at the candidate's current employer. Add a transition overlap with the outgoing CEO, which is the single cheapest insurance a board can buy and the first thing that gets cut when the calendar is tight.

That is already twelve months, and none of it has touched the more important question: do you actually have someone inside?

Answering that question honestly takes twelve to eighteen months on its own, because the answer is almost never a clean yes or no. It is usually "our COO could do it if someone fixed the two gaps everyone has been politely ignoring for three years." Finding out whether those gaps are fixable is the work. You cannot run that experiment in ninety days, and you cannot run it at all once the CEO's departure is public knowledge, because the moment it is public, every internal candidate starts behaving like a candidate instead of an operator.

Spencer Stuart's 2025 U.S. Board Index found that while 84 percent of boards report having a formal succession plan process in place, only about 55 percent of nominating and governance committee chairs said their board was actively supporting CEO succession activity. That gap between having a process and working it is the whole problem in one statistic. A plan in a binder is not a plan.

The picture is worse in private and closely held companies. NACD's 2024 Private Company Board Practices and Oversight Survey found that many private boards lack a formal CEO succession plan entirely, even while identifying it as critically important. That is the mid-market. That is most of the companies we work with.

Plans are worthless, but planning is everything.Dwight D. Eisenhower

Eisenhower said that in 1957, and he was making a point boards should take literally. The document is not the asset. The annual discipline of asking the question is the asset, because it is the only thing that keeps the answer current when the timing turns out to be somebody else's decision.

What Does CEO Succession Planning Actually Involve?

CEO succession planning involves five distinct phases that run in sequence, and each one produces something the next phase needs, which is why compressing the front end breaks the back end.

Phase	When it runs	What it has to produce
Internal bench assessment	24 to 18 months out	An honest answer on whether a real internal candidate exists
Development or decision	18 to 12 months out	Either a developed successor or a decision to go external
External market mapping	12 to 9 months out	A live view of who exists outside and what they cost
Active search	9 to 3 months out	A short list and a signed offer
Transition overlap	3 months to day one	A handoff that does not strand key relationships

Before any of this begins, the board has to be clear that selecting the chief executive is its own decision and not management's, which we cover in who actually hires the CEO. A succession process run at the CEO's direction produces the CEO's preferred successor, which is a different outcome from the one the board is accountable for.

The phase mid-market boards skip is the third one, and skipping it is expensive in a way that does not show up until much later.

External market mapping is not recruiting. Nobody is contacted about a job. It is a structured read of who is running comparable businesses in your sector at your revenue band, where they sit in their own tenure, and what a company would realistically have to pay to move them. It exists to do one thing: give the board a real number and a real field before anyone is emotionally invested in an internal candidate.

Boards that skip it end up choosing between an internal candidate and an abstraction. And when the only alternative to your COO is a hypothetical, the COO wins every time, because the argument for the COO is concrete and the argument against is a feeling. That is not a decision. That is a default with a board vote attached to it.

For a fuller view of how the mechanics work at this level, read what happens in a retained executive search and how long it actually takes, and see the Retained Search FAQ for the questions boards ask most often before they engage.

Why Does an External CEO Hire Cost More Than an Internal Promotion?

An external CEO hire costs more than an internal promotion because it carries a structural pay premium, and a board that starts the process late has no leverage to negotiate that premium down.

The premium is well documented. Wharton research by Matthew Bidwell, published in Administrative Science Quarterly, found that external hires are paid significantly more than internally promoted people in equivalent roles, take roughly two years to perform at the level of an internal promote, and are more likely to exit. You pay more, you wait longer, and you carry more risk. That is the trade, and it is a defensible trade when you have chosen it deliberately. It is a bad trade when the calendar chose it for you.

The size of it surprises people. Equilar's analysis of newly hired CFOs, the closest well-measured proxy at this level, put the external hire pay premium at roughly 20 percent at mid-cap companies, with the bulk of it arriving as equity and one-time awards rather than base salary. Broader executive transition data shows the same shape: one-time award amounts for internally promoted leaders run dramatically below what external hires receive, and external transitions are far more likely to include such an award at all.

That last point is the one boards miss when they budget. The number that blows up a mid-market CEO offer is rarely base salary. It is the make-whole. A sitting CEO you want to recruit is walking away from unvested equity, a long-term incentive plan mid-cycle, and often a bonus they have already earned but not been paid. Somebody has to cover that, and the person who covers it is you.

A board that started twenty four months out has options here. It can develop an internal candidate and avoid the premium entirely. It can map the market early and build a realistic number into the plan. It can approach a target when that person is between vesting cliffs instead of on top of one.

A board that started ninety days out has none of those options. It has one candidate who will say yes, a compressed timeline, and a make-whole number handed to it rather than negotiated. We have watched that dynamic add real money to a mid-market CEO package for no reason other than the calendar.

This is the pay premium, not the cost of running the search itself. For the search economics, read how much it costs to hire a CEO in the mid-market. For the pay mechanics that decide these offers, read why retention bonuses fail to keep senior executives and how to make a senior candidate whole when they forfeit a bonus to join you.

If Your CEO Resigned Tomorrow, Who Runs the Company on Monday?

Most mid-market boards can name a successor and almost none can say how long that person could actually hold the company together, which is the question that reveals whether you have ninety days of cover or nine. Not who becomes CEO. Who runs it Monday.

Put that question on the next board agenda and watch which half of the room has an answer.

From there the sequence is short. Name the interim, in writing, and tell that person. Write down the three capabilities the next CEO needs that the current one does not have, because that list is what the company's next five years require and it is never identical to the job the incumbent has been doing. Then commit to reviewing both once a year, on a fixed date, whether or not anything has changed.

That is the entire discipline. It is not expensive and it does not require a consultant. What it requires is a board willing to have a slightly uncomfortable conversation in a year when nothing is wrong, which is exactly the year in which it is easy and therefore the only year it ever actually gets done.

The mid-market companies that handle CEO transitions well are not the ones with the thickest binders. They are the ones where the board has already said the awkward thing out loud, more than once, long before it mattered. For related reading, see what mid-market CEOs get wrong about board-level succession planning, why external CEO hires nearly doubled in one year, and why promoting from within fails at the VP and C-suite level. To understand how we approach searches at this level, visit our mid-market executive search practice.

If you are ready to fill a senior role or want to talk through your search, reach out at prlinternational.com/contact

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