24/7 Wall St. has chosen its list of the “Worst CEOs In America” for 2017. All the executives on this list have done serious damage to the companies they lead. In some cases it will take years for the businesses to recover, if they ever can.

We used several criteria to select the chief executive officers on the list. Among the factors we considered were stock price changes, earnings and revenue, and tenure at the company. CEOs must have led their companies for two years, or been in the No. 2 position during that period.

This list includes CEOs who departed earlier this year because of poor performance.

It can also include those with the chairman’s title who are not the CEO, but who control the company and make major strategic decisions. For example, The New York Times Co., which is not on this list, is led by Arthur O. Sulzberger, Jr., chairman and, until recently, publisher. President and Chief Executive Officer Mark Thompson works for him, although on paper he reports to the board

Some of these CEOs are still at the companies they run, while others could be gone soon.

Click here to see the worst CEOs in America.

These are the worst CEOs of 2017.