Lonestar Resources US Inc. is an independent oil and gas company. The Company is focused on the development, production and acquisition of unconventional oil, natural gas liquids (NGLs) and natural gas properties in the Eagle Ford Shale in Texas. It has accumulated approximately 38,242 gross acres in crude oil and condensate windows, as of December 31, 2015. As of December 31, 2015, it held a portfolio of conventional, crude oil-weighted onshore assets in Texas. It is conducting resource evaluation on approximately 44,084 gross acres in the West Poplar area of the Bakken-Three Forks trend in Roosevelt County, Montana. Its properties in Eagle Ford Shale Trend-Western Region include Asherton, Beall Ranch, Burns Ranch Area and Horned Frog. The Company also operates Southern Gonzales County property in Eagle Ford Shale Trend-Central Region, and Brazos and Robertson Counties in Eagle Ford Shale Trend-Eastern Region. It has leased approximately 1,450 gross acres in its Cyclone project area.