Vincent D. Foster has served as Executive Chairman since November 2018 and as Chairman of Main Street’s Board of Directors since 2007. Mr. Foster previously served as Main Street’s Chief Executive Officer from 2007 until 2018 and also served as Main Street’s President from 2012 until 2015. He has also been a member of our management team's investment committee since its formation in 2007, a member of our management team's credit committee since its formation in 2011 and a member of our management team's executive committee since its formation in 2015. Mr. Foster also currently serves as a founding director of Quanta Services, Inc. (NYSE: PWR), which provides specialty contracting services to the power, natural gas and telecommunications industries. He also served as a director of U.S. Concrete, Inc. (NASDAQ‑CM: USCR) from 1999 until 2010, Carriage Services, Inc. (NYSE: CSV) from 1999 to 2011, HMS Income Fund, Inc., a non‑publicly traded business development company of which MSC Adviser I, LLC, a wholly owned subsidiary of Main Street, acts as the investment sub‑adviser, from 2012 until 2013 and Team, Inc. (NYSE: TISI) from 2005 until 2017. In addition, Mr. Foster served as a founding director of the Texas TriCities Chapter of the National Association of Corporate Directors from 2004 to 2011. Mr. Foster, a certified public accountant, had a 19 year career with Arthur Andersen, where he was a partner from 1988‑1997. Mr. Foster was the director of Andersen’s Corporate Finance and Mergers and Acquisitions practice for the Southwest United States and specialized in working with companies involved in consolidating their respective industries. From 1997, Mr. Foster co‑founded and has acted as co‑managing partner or chief executive of several Main Street predecessor funds and entities, which are now subsidiaries of ours. Mr. Foster received the Ernst & Young Entrepreneur of the Year 2008 Award in the financial services category in the Houston & Gulf Coast Area. The program honors entrepreneurs who have demonstrated exceptionality in innovation, financial performance and personal commitment to their businesses and communities. 

Dwayne L. Hyzak has served as a Main Street’s Chief Executive Officer since November 2018 and as member of our Board of Directors since January 2018. Mr. Hyzak also serves as a member of our management team's investment and executive committees. Previously, he served as President (2015 until 2018), Chief Operating Officer (2014 until 2018), Chief Financial Officer (2011 until 2014) and Senior Managing Director since 2011. Mr. Hyzak has also served in other executive positions at Main Street since 2007. From 2002, Mr. Hyzak has also served as a Senior Managing Director and in other executive positions of several Main Street predecessor funds and entities, which are now subsidiaries of ours. From 2000 to 2002, Mr. Hyzak was a director of integration with Quanta Services, Inc. (NYSE: PWR), which provides specialty contracting services to the power, natural gas and telecommunications industries, where he was principally focused on the company’s mergers and acquisitions and corporate finance activities. Prior to joining Quanta Services, Inc., Mr. Hyzak, a certified public accountant, was a manager with Arthur Andersen in its Transaction Advisory Services group.

Michael Appling, Jr. is the Chief Executive Officer of TNT Crane & Rigging Inc., a privately held full-service crane and rigging operator. From July 2002 through August 2007, he was the Executive Vice President and Chief Financial Officer of XServ, Inc., a large private equity funded, international industrial services and rental company. Mr. Appling also held the position of CEO and President for United Scaffolding, Inc., an XServ, Inc. operating subsidiary. In February 2007, XServ, Inc. was sold to The Brock Group, a private industrial services company headquartered in Texas. From March 2000 to June 2002, Mr. Appling served as the Chief Financial Officer of CheMatch.com, an online commodities trading forum. ChemConnect, Inc., a venture-backed independent trading exchange, acquired CheMatch.com in January 2002. From June 1999 to March 2000, Mr. Appling was Vice President and Chief Financial Officer of American Eco Corporation, a publicly traded, international fabrication, construction and maintenance provider to the energy, pulp and paper and power industries. Mr. Appling worked for ITEQ, Inc., a publicly traded, international fabrication and services company, from September 1997 to May 1999, first as a Director of Corporate Development and then as Vice President, Finance and Accounting. From July 1991 to September 1997, Mr. Appling worked at Arthur Andersen, where he practiced as a certified public accountant. 

Valerie L. Banner has served as Vice President, General Counsel and Corporate Secretary of Exterran Corporation (NYSE: EXTN) since November 2015.  Prior to the spin-off of Exterran Corporation from Archrock, Inc., formerly known as Exterran Holdings, Inc. (NYSE: AROC, formerly EXH), in November 2015, Ms. Banner served as Associate General Counsel of Exterran Holdings from 2008 to 2015 and as special counsel from 2007 to 2008.  Prior to the merger of Hanover Compressor Company and Universal Compression Holdings, Inc. in August 2007 to form Exterran Holdings, she served Universal as special counsel from 2000 to 2007, and served as Senior Vice President, General Counsel and Secretary from 1998 through 2000.  Prior to joining Universal, Ms. Banner served as counsel for several publicly traded companies and was in private practice, having begun her career as an associate with Andrews & Kurth LLP.  Ms. Banner also serves as an officer and director of certain Exterran Corporation subsidiaries. 

Joseph E. Canon, since 1982, has been the Executive Vice President and Executive Director, and a member of the Board of Directors, of Dodge Jones Foundation, a private charitable foundation located in Abilene, Texas. Since 2008, he has also been the Executive Vice President and Executive Director, and a member of the Board of Directors, of Kickapoo Springs Foundation and The Legett Foundation, two private family foundations located in Abilene, Texas. Mr. Canon has also been involved during this time as an executive officer and director of several private companies and partnerships with emphasis on energy, financial and other alternative investments. From 1974 to 1982, he served as Executive Vice President and Trust Officer of First National Bank of Abilene. Mr. Canon served until April 2014 on the Board of Directors of First Financial Bankshares, Inc. (NASDAQ: FFIN), a bank and financial holding company headquartered in Abilene, Texas. Mr. Canon also served until April 2014 on the Board of Directors for several bank and trust/asset management subsidiaries of First Financial Bankshares, Inc. He has also served as an executive officer and member of the Board of Directors of various other organizations including the Abilene Convention and Visitors Bureau, Abilene Chamber of Commerce, Conference of Southwest Foundations, City of Abilene Tax Increment District, West Central Texas Municipal Water District and the John G. and Marie Stella Kenedy Memorial Foundation. 

Arthur L. 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). Mr. French currently serves as an advisor to LKCM Capital Group, LLC, an alternative investment vehicle for Luther King Capital Management headquartered in Fort Worth, Texas (“LKCM”). In addition, he 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), an LKCM portfolio company which provides 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. From 1996‑1999, Mr. French was Chairman and Chief Executive Officer of Metals USA Inc. (NYSE), where he managed the process of founders 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. 

John E. Jackson is the President and Chief Executive Officer of Spartan Energy Partners, LP, a gas gathering, treating and processing company. He has also been a director of Seitel, Inc., a privately owned provider of onshore seismic data to the oil and gas industry in North America, since August 2007, CNX Midstream Partners, LP, formerly known as CONE Midstream Partners, LP (NYSE: CNXM, formerly CNNX), a master limited partnership that owns and operates natural gas gathering and other midstream energy assets in the Marcellus Shale in Pennsylvania and West Virginia, since January 2015, and Basic Energy Services, Inc. (NYSE: BAS), a provider of well site services in the United States to oil and natural gas drilling and producing companies, since December 2016. Mr. Jackson was Chairman, Chief Executive Officer and President of Price Gregory Services, Inc., a pipeline‑related infrastructure service provider in North America, from February 2008 until its sale in October of 2009. He served as a director of Hanover Compressor Company (“Hanover”), now known as Exterran Corporation (NYSE: EXTN) and Archrock, Inc. (NYSE: AROC), from July 2004 until May 2010. Mr. Jackson also served as Hanover’s President and Chief Executive Officer from October 2004 to August 2007 and as Chief Financial Officer from January 2002 to October 2004. He also serves on the board of several non‑profit organizations.

Stephen B. Solcher has served as the Senior Vice President of Finance and Business Operations and Chief Financial Officer of BMC Software, Inc., a privately held company that is a global leader in software solutions, since 2005. Previously, Mr. Solcher served as BMC’s Treasurer and Vice President of Finance. He joined BMC in 1991 as Assistant Treasurer and became Treasurer the following year. During Mr. Solcher’s tenure, BMC grew from nearly $130 million in annual revenue to $2.2 billion in annual revenue in 2013, its last year operating as a public company. In addition to leading many M&A transactions as Chief Financial Officer, Mr. Solcher was instrumental in BMC’s transition from being a publicly traded company to becoming a private held company in 2013. Prior to joining BMC, he was employed by Arthur Andersen as a certified public accountant. Mr. Solcher also serves on the development board of the Mays Business School at Texas A&M University and has served on the board of numerous nonprofit organizations. He was recognized by Institutional Investor magazine as part of the “All American Executive Team” in 2010 and 2012 and by Houston Business Journal as 2012 Best CFO—Large Public Company.