Certain Common Stock of Gulfport Energy Corporation are subject to a Lock-Up Agreement Ending on 11-JAN-2024.

Gulfport Energy Corporation is an independent natural gas-weighted exploration and production company. The Company is focused on the exploration, acquisition, and production of natural gas, crude oil and natural gas liquid (NGL) in the United States, with a primary focus in the Appalachia and Anadarko basins. Its principal properties are located in Eastern Ohio, targeting the Utica and in central Oklahoma targeting the South-Central Oklahoma Oil Province (SCOOP) Woodford and SCOOP Springer formations. The Utica is a hydrocarbon-bearing rock formation located in the Appalachian Basin of the United States and Canada. It has approximately 188,000 net reservoir acres located primarily in Belmont, Harrison, Jefferson and Monroe Counties in Eastern Ohio. The SCOOP play mainly targets the Devonian to Mississippian aged Woodford Shale. It has approximately 73,000 net reservoir acres located primarily in Garvin, Grady and Stephens Counties.