Former senior managers of KCS Energy Corp. and Charlie Prioleau have formed Houston-based privately held Force 5 Energy LLC with a $100-million equity commitment from EnCap Investments LP affiliates and other minority investors. Force 5 will focus principally onshore South and East Texas and northern Louisiana.

Cliff Foss is president and chief executive. He was senior vice president and senior manager of KCS Energy, which merged with Petrohawk Energy Corp., and has experience with Cockrell Oil, Barrett Resources and other E&P companies.

Charlie Prioleau has been named executive vice president, finance, and chief financial officer. Wes VanNatta has been named executive vice president, ...