AdvertisementFTC bars former Pioneer CEO in Exxon Mobil deal, saying he colluded with OPECMay 02, 2024The Associated PressfacebookEmailPioneer Natural Resources' office is shown on Jan. 13, 2021, in Midland, Texas. Exxon Mobil's $60 billion deal to buy Pioneer has received clearance from the Federal Trade Commission, but the former CEO of Pioneer was barred from joining the new company's board of directors. (AP)