89 Energy III LLC operates oil and gas fields with assets in Oklahoma.
Casillas Petroleum dated back to 1986. Ridgemont Equity and Kayne Anderson Capital provided funding to Casillas Petroleum Resources Partners I & II beginning in 2016. Native Exploration was formed in 2017 by Lane Gibbs and Matt Whitaker with funding from Kayne Anderson, and Acacia Exploration was founded in 2018 by Brandon Junker, Melissa Andreani, and Clayton Flurry with funding from Kayne Anderson Energy Fund VIII. Kayne Anderson combined Casillas, Native, and Acacia in May 2021 to form 89 Energy, led by John-Mark Beaver, who will also manage the assets of Triumph Energy.