For two out of three CEOs in our database, performance was lower in their years six to ten than it was in years one to five. Some gave up their gains of the first five years altogether. Results may not actually dive into negative territory, but if they do, they vacillate up and down around a mean, which only reinforces the sense that one can let up on the gas.

The danger is exacerbated when boards also become less energetic in pushing for vigorous changes in strategy or operations. As director Ann Hanley shared, “It’s easy to get into incremental mode.” A CEOs internal team may resist a continuous quick pace of change.

As for former CFOs, analysis shows that, although they often get off to a very strong start, their performance tends to lag beginning in their third year. For the full course of their tenure, they accounted for the smallest share of top performers, at just 8 percent. They also accounted for the highest percentage of bottom-quintile performers. In examining their performance according to measures in addition to TSR, including revenue growth, return on invested capital, and profitability, we found that their strong early performance is largely due to their experience with finding efficiencies. This often leads them to continue to focus heavily on driving growth in profitability by taking cost out of the business and shoring up the company’s balance sheet. The market generally rewards them in the first two to three years for those achievements. But over time, the emphasis on holding down costs versus driving revenue growth through product, marketing, and sales innovation, and revenue performance, which few CFOs have experience in, impedes growth.

The study analyzed the fortunes of nearly four hundred CEOs appointed to the helm of S&P 500 companies within the decade of 2004 to 2014. A set of the fifteen most effective early moves was identified. And out of those, the highest performers relied most on these five: operational improvements, launching new products, improving customer relationships, increasing employee engagement, and culture change.

Those in the top quintile of performance increased company efficiency at a much faster clip in their first two years than lower performers. In fact, they cut costs at twice the pace as those in the lower performance groups. This allowed them to achieve, on average, gains of 10 percent in operating income in their first year and 20 percent in year two. Top performers also engaged, on average, in fewer acquisitions in these years, and those they did were typically smaller scale.

When CEOs depart during the Complacency Trap stage of the life cycle, generally from years six to ten, inefficiencies that have crept into the organization and problems that have been festering— such as an underperforming unit or product line— constitute much of the low-hanging fruit their successors immediately go after. This invites the question: If those problems are so apparent to new leaders and boards that appoint them, why haven’t they been more effectively addressed?