Operating Partners

Mr. Andrews has 25 years of experience in a wide variety industrial distribution and manufacturing businesses. He has been an Operating Partner at LKCM since 2016 and served as the interim CEO of Relevant Solutions. Over the course of his business career Mr. Andrews has had ownership, board, and executive positions with a number of companies including value-added Industrial hose and gasket distribution, machine tool distribution, Industrial coatings, and pump distribution, among others. His activities have been centered on creating shareholder value with a focus on organization, profitable sales growth, operational excellence and the resulting growth in EBITDA. Prior to joining, Relevant Mr. Andrews lead the initial purchase, and ultimate sale, of GHX Industrial, where revenues grew from $16mm to $350MM at the time of his departure. Mr. Andrews is a Trustee of the Neuhaus Education Center, The Midtown Arts & Theater Center Houston (MATCH), and a Director of the Joe Barnhart Foundation. He is a graduate of the University of Texas at Austin, and is a CPA licensed to practice in the State of Texas.

Robert Brown has served as Chief Financial Officer in small and middle market privately held companies. He currently serves as President of Truerock Compression Supply and advisor to LKCM Headwater Investments portfolio companies. Mr. Brown graduated with a Bachelor of Business Administration in Finance from the University of Texas at Austin and holds designations as CPA and CGMA.

Mr. Comstock is a current board member for Relevant Solutions, Test Equity and Relevant Power Solutions. Previously Mr. Comstock was CEO of Rawson from February 2003 until December of 2016 ( It was sold by LKCM to ERIKS in 2013). Prior to joining Rawson, Mr. Comstock was the Chief Operating Officer of Furmanite, a petrochemical service company. Mr. Comstock spent 16 years with Keystone International, a flow control company, and served as President of the Keystone International’s Industrial Valve Group in Europe for three years. Mr. Comstock received an MBA and a Bachelor of Science in Computer Science from Texas A&M University.

The list below covers my industrial/pump/automated and engineered vales and instrumentation experience. Duriron is now Flowserve Corporation. • 1979-Duriron Sales Engineering Baton Rouge, LA • 1983-Duriron District Manager Mobile, AL • 1985-Duriron District & Regional Manager Philadelphia, PA • 1989-Duriron Control Valve Product Manager-Cookeville, TN • 1990-Duriron/Automax VP Sales-Cincinnati, OH • 1994-Valvax Corp Account Manager-Cincinnati, OH • 1996-Carter Chambers-Baton Rouge, LA 1996-2009 Carter Chamber Career Highlights Carter Chambers LLC Variety of positions with increasing responsibilities including Business Unit Manager New Orleans, VP of Sales and Marketing, Executive VP, and President & CEO from 1999 – 2009. 2009-2010 Director Of Business Development PVI Holdings a subsidiary of Pon Holdings. Offered and accepted a severance package 10.28.10. In 2013 joined LKCM team as BOD/partner of Relevant Solutions.

Mr. French has served in a variety of executive management and board of director roles over the course of his business career. He began his private investment activities in 2000 and served as a director of Fab Tech Industries, a steel fabricator, from November 2000 until August 2009, as a director of Houston Plating and Coatings Company, an industrial coatings company, from 2002 until 2007, as a director of Rawson LP, an industrial distribution and maintenance services company, from May 2003 until June 2009, and as non-executive chairman of Rawson Holdings, LLC from March 2009 until December 2010. From September 2003 through March 2007, Mr. French was a member of the Advisory Board of Main Street Capital Partners, LLC and a limited partner of Main Street Mezzanine Fund, LP (both of which are now subsidiaries of Main Street Capital) and was a founding director of Main Street when it became a public company in Oct 2007. He served as Chair of the Compensation Committee from 2007 until April 2018 and continues to serve as Main Street’s lead director and remains a member of the Compensation Committee. Since 2003, Mr. French has been associated with LKCM Capital Group, LLC as an advisor and portfolio company director. He currently serves as an independent director, Chairman of the Audit Committee and a member of the Compensation Committee of Relevant Solutions Inc. (previously LKCM Distribution Holdings LP). Relevant Solutions distributes industrial instrumentation and controls, air compressor products and systems, heat transfer and filter systems and related maintenance services to chemical, petrochemical, oil and gas and power generation customers in Texas, Oklahoma and Louisiana as well as other key markets in the central and western United States. Previously, Mr. French served as a director of Rawson LP and Industrial Distribution Group both of which were LKCM portfolio companies which focused on sale/distribution of a wide variety of process control and industrial components used in process, power and manufacturing industries. From 1996-1999, Mr. French was Chairman and Chief Executive Officer of Metals USA Inc. (NYSE), where he managed the process of founder’s acquisition, assembled the management team and took the company through a successful IPO in July 1997. From 1989-1996, he served as Executive Vice President and Director of Keystone International, Inc. (NYSE), a manufacturer of flow controls equipment. After serving as a helicopter pilot in the United States Army, Captain, Corps of Engineers from 1963-1966, Mr. French began his career as a Sales Engineer for Fisher Controls International, Inc. in 1966. During his 23-year career at Fisher Controls, from 1966-1989, Mr. French held various titles, and ended his career at Fisher Controls as President, Chief Operating Officer and Director.

Dr. Barry Lawrence has served on the Relevant Solutions Board of Directors since 2014. A professor at Texas A&M University, Dr. Lawrence is Coordinator of the Industrial Distribution Program; Director of the Thomas and Joan Read Center for Distribution Research and Education; Director the Global Supply Chain Laboratory, and author of twelve books on distribution excellence. He also holds the prestigious Leonard and Valerie Bruce Leadership Chair. His faculty duties include teaching graduate, undergraduate and professional continuing education classes in logistics, Supply Chain Management, distribution information systems and distribution strategy, and working on funded research projects, publications and industry presentations. He is a frequent speaker for distribution associations and companies on topics in his areas of research, ranging from optimizing growth and market share, to sales and marketing optimization, inventory and other asset management, network improvements, transportation and logistics, and best practices and information systems for distribution operations. He has worked on many large industry projects and had more than 12 years of industry experience in sales and retail business before joining Texas A&M. Dr. Lawrence holds a Ph.D. degree in Information and Operations Management from Texas A&M University, a Master of Business Administration degree from Texas State University and a bachelor’s degree in Finance from the University of Texas at Austin.

Charles Lingenfelter currently serves as a principal at Stonefence Advisors, LLC, an advisory firm that provides investment life cycle support with a focus on strategic, operational and cultural aspects of companies. Mr. Lingenfelter retired in 2015 as President and Chief Executive Officer of Industrial Distribution Group (IDG), a national distributor of indirect materials and a global leader in the design, build and management of supply chain solutions which generated approximately $800 million in revenue. IDG was publicly traded on NASDAQ and was subsequently purchased by an affiliate of Luther King Capital Management in August 2008. Prior to being appointed CEO, Mr. Lingenfelter was President of IDG’s largest division since IDG’s inception as a public company in 1997. From 1988 to 1997, Mr. Lingenfelter was an owner and executive of The Distribution Group, one of the companies that combined to form IDG upon its initial public offering. Prior to 1988, Mr. Lingenfelter held various positions in sales and marketing with Ingersoll Rand’s Tools Group culminating in his appointment to Vice President, Sales and Marketing in 1984. He joined Ingersoll Rand in January 1973 after receiving his undergraduate degree in Mechanical Engineering from the Indiana Institute of Technology. Mr. Lingenfelter currently serves on the Board of Directors of BearCom Wireless, a privately held national wireless equipment distributor. Mr. Lingenfelter has significant experience in the operational aspects of national distribution and service companies with a focus on increasing revenue profitably through internal growth, acquisitions, operational efficiencies and margin enhancement. During his tenure as CEO at IDG, Mr. Lingenfelter grew sales 60% while increasing profits over 350%. Charles and his wife, Cheryl, reside in Charlotte, North Carolina.

Mr. Maske currently serves as Chairman of Sakrete of North America, as well as a Board Member / Business Advisor for Gemseal Pavement products. He is a graduate of Wingate College and has an MBA from Winthrop University. He has successfully completed Executive Leadership training from Duke University Fuqua school of business, as well as numerous other leadership training courses. Mr. Maske has spent more than 45 years in the bagged concrete industry, beginning his career in 1973, joining a family owned business – the W. R. Bonsal Company, in rural North Carolina. During his nearly 30 years with Bonsal – he held leadership positions in Finance, Construction Management, Purchasing Management, Personnel Management, Plant Management, Director of Operations, and Chief Operating Officer. In 2001, David, along with the CEO and W.R. Bonsal III (Chairman) led the divesture of the business to Oldcastle, a CRH Company. After the acquisition, David was named President of the new company, Bonsal American, Inc. In 2015, David moved into the Chairman’s role.

Mr. Moon is currently the President of MFM Advisory Services. Prior to this role, Mark was the President for Motorola Solutions, Inc. He left the company at the end of 2016 after an outstanding 30+ year career. Prior to his departure, he was responsible for the strategy of the company and leading all aspects of global operations including Sales and Marketing, Product Research and Development, Software and Services, and Supply Chain. Mr. Moon joined Motorola in 1985. He held a variety of leadership roles throughout the organization culminating in responsibility for leading 10,000+ employees located in 100+ countries and serving as the face and voice of the company to customers and partners around the world. In addition, he was previously Chairman of the Board of Directors for Vertex Standard, a Motorola joint venture headquartered in Tokyo, Japan. He has served on the Board of Directors for the National Fallen Firefighters Foundation, which was created by the U.S. Congress to lead a nationwide effort to honor America’s firefighters and provide support and assistance to their families. He is an advisor and operating partner for Luther King Capital Management and an advisor and operating partner for Bertram Capital. He currently serves on the Board of Directors for BearCom LLC, which is the largest value-added distributor of two-way radio communications and solutions in North America and on the Board of Directors of TestEquity LLC, which is the premier value-added distributor of electronic test and measurement solutions and eMRO tools and supplies. Mr. Moon’s past experiences and relationships have established him as an innovative thought leader on voice and data communications and information management. With this said, his true strength lies in his ability to build, coach and lead highly effective teams, developing a clear vision and strategy, creating the right organizational structure and leadership team, developing leaders and a leadership pipeline, and creating a consistent cadence to get stakeholder “buy-in” and deliver results. Mr. Moon earned a bachelor’s degree in industrial and systems engineering from the Georgia Institute of Technology, where he was named to the school’s Academy of Distinguished Engineering Alumni in 2014 and currently serves on the Advisory Board of the School of Industrial and Systems Engineering.

Mr. Murdock has 40 years of experience in the natural gas compression industry and has been an Operating Partner at LKCM since 2012. He is currently a board member and adviser for Flatrock Compression, Ltd. For 32 years, Mr. Murdock held senior management and leadership positions at Compressor Systems, Inc. including president and chief operating officer. He specializes in contract compression services and specialty compressor products distribution. He has served as president of the Gas Compressor Association and has been a board member of numerous other energy industry organizations throughout his career. He holds a Bachelor of Science degree from Texas State University.

Spanning a 30-year career, Dr. Palumbo has developed a unique expertise and skill set in the diverse fields of psychology, technology, organizational management required to harness innovative business opportunities. David joined LKCM as an Operating Partner for Leading Quality Assurance, a London based benchmarking and assessment company focused in the Luxury Hospitality sector. Prior to joining LKCM, David has served in a variety of professional services and platform companies including: Chairman at Degree Analytics, an big data/machine learning company based in Austin, Texas serving the Higher Education sector focusing on student success; Vice President for Professional Services and Engineering at Compass Learning, an Austin,Texas based educational technology company which provides a full suite of digital content, learning management software and professional services to more than 2 million K-12 students annually; Chief Academic Officer and Chief Information Officer of National Heritage Academies, a leading charter school network, where he led measurement, research, accountability, curriculum, assessment and all aspects of information technology for their network of 71 schools in nine states; President of CTB/McGraw Hill, the leading publisher of comprehensive test systems for children and adults; Vice President and Chief Learning Officer for Sapient Corporation, a leading business and technology consultancy where he spearheaded the design and development of both the CISCO Learning Network and MIT’s OpenCourseWare initiatives; CEO of WOWIO, an emerging leader in e-book distribution technologies; and Human Code where he was an early leader in the convergence of education and entertainment for clients like Disney, National Geographic, Leapfrog, and the Discovery Channel. In addition, David was a tenured faculty member at the University of Houston-Clear Lake’s School of Education for more than a decade where he taught courses and conducted research in the emerging field of cognitive science. Dr. Palumbo holds a Bachelor of Arts in psychology from the University of Michigan, a Masters of Arts in educational psychology and a Doctorate in educational psychology/instructional technology from West Virginia University.

Corbin J. Robertson, III serves on the boards of portfolio companies of LKCM Headwater and Quintana. Mr. Robertson is also currently an owner of various interests associated with the Robertson family holding company and Quintana Capital Group, a $1 billion energy-focused private equity firm that he co-founded in 2006.

Previously, he was Managing Partner of Spring Street Capital Partners LP, a successful small cap long/short hedge fund, a Vice President for Sandefer Capital Partners, a $500 million energy investment fund and a Vice President for Reservoir Capital Group, a $2 billion New York-based investment firm.

Mr. Robertson began his career as a business analyst for Deloitte & Touche Consulting Group LLP. In addition to many civic and charitable boards, Mr. Robertson serves on the boards of LKCM Headwater and Quintana-affiliated portfolio companies. Mr. Robertson graduated with a Bachelor of Arts in Plan II and a Bachelor of Business Administration in Business Honors and Finance from University of Texas at Austin and a Masters of Business Administration from Harvard Business School. He also serves as the Managing Member and President of CIII Capital Management, LLC.