( 1 ) 42749 shares were repurchased in open-market transactions under the marathon oil corporation dividend reinvestment and direct stock purchase plan ( the 2018 2018plan 2019 2019 ) by the administrator of the plan . stock needed to meet the requirements of the plan are either purchased in the open market or issued directly by marathon . ( 2 ) 2936 shares of restricted stock were delivered by employees to marathon , upon vesting , to satisfy tax withholding requirements . item 6