The CEO of Marathon Petroleum, Gary Heminger, took home an astonishing 935 times more pay than his typical employee in 2017. One of Marathon's gas station workers would have to toil more than nine centuries to make as much as Heminger grabbed in just one year. Employees of at least five other US firms would have to work even longer - more than a millennium - to catch up with their top bosses. These companies include the auto parts maker Aptiv (CEO-worker pay ratio: 2,526 to 1), the temp agency Manpower (2,483 to 1), amusement park owner Six Flags (1,920 to 1), Del Monte Produce (1,465 to 1), and apparel maker VF (1,353 to 1). These revelations come thanks to a new federal regulation that requires publicly traded US corporations to disclose, for the first time ever, how much their chief executives are making compared with their median workers. The disclosures are just now starting to flow in. Ever since 2010, the year Congress plugged a ratio disclosure mandate into the Dodd-Frank financial reform act, corporate lobbyists have been scheming to delay and repeal that mandate's implementation. But responsible investors and other activists rallied and kept the mandate in place. The new ratios offer a benchmark for corporate greed that exposes exactly which firms are sharing the wealth their employees create and which aren't, knowledge we can use to impose consequences on the corporations doing the most to make the United States more unequal.