J. Skinner

Mr. Jenkins is the Commercial Transformation Lead for Stellex Resource Group, primarily focusing on acquisition diligence and portfolio operational improvement. Prior to joining Stellex Resource Group in 2025, Russell Jenkins was a Managing Partner at Maple Street Advisors and Investor Group Services, a services firm focusing on portfolio improvement for private equity backed companies. Mr. Jenkins was also on the portfolio operations team for TPG capital and has spent the last 15 years working in private equity and portfolio company improvement.

Previously, Mr. Jenkins was a founding partner and board member of Maple Street Advisors. Mr. Jenkins was a financial board member of Prince of Peace Christian School in Carrollton, Texas, and an entrepreneurial mentor at Ascend Dallas, a non-profit focused on female owned businesses and startups, specializing in commercial strategy and helping small businesses to secure capital.

Mr. Jenkins received his B.S. from the University of North Texas in Economics and Environment Engineering, his M.A. in Finance from Tulane University, and his M.B.A. from Southern New Hampshire University.

Mr. Kajfez is the Supply Chain Transformation Lead for Stellex Resource Group, primarily focusing on acquisition diligence and portfolio company operational improvement. Prior to joining Stellex Resource Group in 2025, Mr. Kajfez established and operated Harrison Matthews Consulting, LLC, a boutique consulting firm supporting the private equity industry since 2013. Prior to Harrison Matthews Consulting, Mr. Kajfez held various senior leadership positions with General Electric, Compagnie de Saint Gobain S.A., and Ferro Corporation.

Previously, Mr. Kajfez served as an executive board member for Society Plastics Industry.

Mr. Kajfez received his B.S. in Business Management from Myers University and his M.B.A from Lake Erie University.

Mr. Hartenstein is a member of Stellex’s investment team. Prior to joining Stellex, Mr. Hartenstein was an Associate, and previously Analyst, at Fremman Capital.

Mr Hartenstein received his master’s degree from IE Business School in Spain.