Endurance Resources III LLC

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Meet Our Management Team

Don Ritter

Chief Executive Officer

Don brings to his leadership of Endurance diverse experience in oil and gas engineering, technology, and management. Don spent the last 10 years leading Endurance Resources I & II, and its predecessor, TriTex Energy A, LP as President and CEO.  Don spent the first 19 years of his career at Mobil where he served in various engineering and management roles in the United States and internationally and developed expertise in drilling engineering, completion design, and project planning.  Before co-founding the predecessor company of Endurance in 2008, Don led the engineering, business development, and sales efforts at GeoMechanics International, a technology firm focused on helping companies maximizing success in horizontal resources plays.



Randall brings nearly 40 years of geological and exploration experience across the Permian Basin to his role at Endurance.  He began his career as an exploration geologist for Yates petroleum before spending nearly 22 years as exploration manager of Ray Westall Operating. Randall joined the Endurance Resources team when the predecessor company of Endurance acquired the assets of his former employer.

Randall Harris, Vice-President

Hunter Cardwell

V.P. of Finance

Joined Endurance in June 2015 and has since been responsible for all finance functions of Endurance Resources. He oversaw and managed rapid asset growth in Endurance's two entities during his tenure.  Prior to Endurance, Hunter was most recently with Crestline Investors, a ~$8B alternative asset manager where he evaluated distressed Oil & Gas credit opportunities.  Hunter also worked at Disiere Holdings, a 'family office' where he analyzed debt and equity investments across a multitude of industries. BBA-Finance: SMU, 2008. MBA: Duke University, 2015. CFA Charterholder

Brad Booth


Brad Booth joined the Endurance team in 2014 as the Endurance account manager for OGBS, Endurance's third-party accounting vendor.  At OGBS, Brad was responsible for all Accounting functions for Endurance Resources.  Served as Controller & Director of Corporate Development for Icon Midstream from February 2016 - February 2017.  Brad began his career as an Audit Associate with Montgomery Coscia Greilich LLP.  Most recently Brad served as controller/financial director for Jay-Bee Oil and Gas. BBA-Accounting & Finance: University of South Carolina, 2010.