Perdue also filed a 2012 disclosure as a Senate candidate, in which he reported about $887,000 in income from sitting on the boards of four companies: Marietta-based Graphic Packaging; Easton-Bell Sports of Van Nuys, California; Washington, D.C.-based Liquidity Services Inc.; and Alliant Energy Corporation of Madison, Wisconsin. In 2012, the couple's listed assets were valued at between $11.9 million and $48 million, based largely on their extensive investments. Their only liability was a margin loan between $250,000 and $500,000. They also reported receiving between $1.27 million and $7.26 million in investment income from dividends, interest and capital gains.