Longtime shale boss and North Texas energy magnate Scott Sheffield said he’s no longer interested in joining Exxon Mobil Corp.’s board after the U.S.

The Federal Trade Commission said Tuesday that Scott Sheffield, founder and former chief executive of Pioneer Natural Resources, would not be allowed to directly challenge its order blocking him from Exxon Mobil's board,

The Federal Trade Commission on Thursday set aside orders barring Hess (NYSE:HES) CEO John Hess from joining Chevron's (CVX) board and former Pioneer Natural Resources CEO Scott Sheffield from joining Exxon Mobil's (XOM) board (I,