Over the last three months, he has shaken up his management team, bringing in a new finance chief and head of alternative investments.

The finance chiefs' tenures also shortened significantly between the two periods.

Some finance chiefs, of course, are just changing companies.

That led to jail time for Boeing's finance chief and the resignation of its chief executive.

But today its finance chief Winston Yung dismissed the concerns.

He has shaken up his management team, bringing in a new finance chief and head of alternative investments.

No matter how small, any company can benefit from having a finance chief to help organize its finances and track its performance.

At these companies, the finance chief often becomes the liaison charged with keeping investors updated on how the company is performing.

The company's former finance chief and the man who ran its worldwide medicines group were not as lucky.

The interim finance chief will be Robert Levin, another executive at the company.