Gulfport in contract spat with Mammoth

Published  9 January 2020 23:00 GMT

Gulfport investor calls for $500m buyback

Published  17 January 2019 18:33 GMT

Mammoth grows with pair of deals

Published  6 August 2018 22:46 GMT

Gulfport extends Mammoth fracking contract

Published  12 July 2018 22:56 GMT