A report from As You Sow analyzing the pay packages of 100 corporate CEOs found that compensation has grown nearly 1000 percent over the past four decades.

The organization, which advocates for corporate responsibility, found the largest component of executive compensation has been provided by “performance pay” incentives. However, the analysis found virtually no correlation between CEO pay and corporate performance.

"The most overpaid CEOs represent an extraordinary misallocation of assets," the organization wrote in its report. "Regression analysis showed each of the top nine most overpaid had compensation at least $20 million more than if their pay had been appropriately aligned with performance.."

Basing its findings on fiscal year 2013 data, the report found the following 10 CEOs were the most overpaid when factors such as corporate performance under their leadership were considered.

No. 10
John Hammergren
McKesson Corporation
$25,919,882 

 

No. 9
Leonard Schleifer, M.D., Ph.D.
Regeneron Pharmaceuticals
$36,272,665 

 

No. 8
Philippe Dauman
Viacom, Inc.
$37,186,099 

 

No. 7
Larry Merlo
CVS Caremark Corporation
$31,330,162 

 

No. 6
Robert Iger
The Walt Disney Corporation
$34,321,055 

 

No. 5
David Zaslav
Discovery Communications
$33,349,798 

 

No. 4
Leslie Moonves
CBS Corporation
$66,932,581 

 

No. 3
Richard Adkerson
Freeport-McMoran Copper & Gold Inc.
$55,260,539 

 

No. 2
Lawrence Ellison
Oracle Corporation
$78,440,657 

 

No. 1
Anthony Petrello
Nabors Industries Ltd.
$68,246,187

Click As You Sow to view the complete report.