Southwestern Energy

GeoSouthern Haynesville is an energy company focusing on the development of natural gas properties in the stacked Haynesville and Middle Bossier shale plays in North Louisiana.

Indigo Natural Resources is a Houston-based company engaged in the exploration and production of oil. Founded in 2015, it operates through a dual strategy of aggregating mineral interests and acquiring and developing operated working interest production. The company manages over 600,000 acres of mineral rights across 15 states, with a significant concentration along the Gulf Coast in Louisiana, Alabama, and Mississippi. Indigo Natural Resources oversees production from more than 600 wells, positioning itself as a notable player in the oil industry.

Montage Resources Corporation was an oil and natural gas exploration and production company based in Irving, Texas, primarily active in the United States. The company focused on the Utica and Marcellus Shales, holding approximately 227,000 net effective undeveloped acres across southeast Ohio, West Virginia, and North Central Pennsylvania. As of its last reporting, Montage had estimated proved reserves of approximately 2,729.8 billion cubic feet of natural gas equivalent. Founded in 2011, Montage Resources emerged from the combination of Eclipse Resources and Blue Ridge Mountain Resources, and it underwent a name change in 2019. The company operated exclusively in the exploration and production segments of the oil and gas industry. In November 2020, Montage was acquired by Southwestern Energy.