Vince Foster

Executive Chairman

Vince Foster

Vince Foster

Executive Chairman

Phone: 713-350-6000

Email: vdfoster@mainstcapital.com

Location: Houston, Texas

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 November 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 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, where he also serves on the audit committee and investment committee. 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 to 1997. Mr. Foster was the director of Arthur 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 and in other senior executive positions 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 Hyzak

Member of the Board and Chief Executive Officer

Dwayne Hyzak

Dwayne Hyzak

Member of the Board and Chief Executive Officer

Phone: 713-350-6013

Email: dhyzak@mainstcapital.com

Location: Houston, Texas

Dwayne L. Hyzak has served as Main Street’s Chief Executive Officer since November 2018 and as a 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 and also serves as the Chief Executive Officer and Chairman of the Board of MSC Income Fund, Inc.(“MSC Income”), a business development company that is managed by MSC Adviser I, LLC, our wholly owned portfolio company. Previously, he served as President (2015 until November 2018), Chief Operating Officer (2014 until November 2018), Chief Financial Officer (2011 until 2014) and Senior Managing Director since 2011. Mr. Hyzak has served in other senior executive positions at Main Street since prior to its IPO in 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. Mr. Hyzak currently serves on the board of directors of Child Advocates, a non-profit organization that trains and supports advocates to serve the interests of abused or neglected children in the greater Houston area.

David Magdol

President and Chief Investment Officer

David Magdol

David Magdol

President and Chief Investment Officer

Phone: 713-350-6009

Email: dmagdol@mainstcapital.com

Location: Houston, Texas

David L. Magdol has served as President since November 2018 and Chief Investment Officer since 2011. Mr. Magdol is also the chairman of our management team’s investment committee and a member of our management team’s executive committee and also currently serves as the President and Chief Investment Officer of MSC Income. Previously, he served as Vice Chairman from 2015 until November 2018. Mr. Magdol has served in other senior executive positions at Main Street since prior to its IPO in 2007. Mr. Magdol 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, since 2002. Mr. Magdol joined Main Street from the investment banking group at Lazard Freres & Co. Prior to Lazard, he managed a portfolio of private equity investments for the McMullen Group, a private investment firm/family office capitalized by Dr. John J. McMullen, the former owner of the New Jersey Devils and the Houston Astros. Mr. Magdol began his career in the structured finance services group of JP Morgan Chase.

Jesse Morris

Executive Vice President, Chief Operating Officer

Jesse Morris

Jesse Morris

Executive Vice President, Chief Operating Officer

Phone: 713-350-9221

Email: jmorris@mainstcapital.com

Location: Houston, Texas

Jesse E. Morris has served as Executive Vice President and Chief Operating Officer since July 2019. Mr. Morris also currently serves as the Executive Vice President and Chief Operating Officer of MSC Income. He previously served in various roles of increasing responsibility with Quanta Services, Inc. (NYSE: PWR), which provides specialty contracting services to the power, natural gas and telecommunications industries, including most recently as Executive Vice President – Finance and President – Infrastructure Solutions from 2018 until July 2019. In this position, he oversaw the accounting, treasury, tax and financial planning and analysis activities and led Quanta’s public-private partnership (P3) concession and private infrastructure investment activities. He previously served as Quanta’s Executive Vice President – Corporate Development from 2014 to 2018. Prior to joining Quanta, Mr. Morris served in various financial and accounting positions of increasing responsibility with Sysco Corporation (NYSE: SYY), a global distributor of food and related products primarily to the foodservice or food-away-from-home industry, from 2002 through 2013, including as Vice President and Chief Financial Officer – Foodservice Operations and Vice President of Finance and Chief Financial Officer – Broadline Operations. His responsibilities in those positions at Sysco included the oversight of financial and accounting matters for field operations and corporate financial planning and analysis matters. Mr. Morris began his career as a certified public accountant with Arthur Andersen where he advanced to experienced audit manager.

Brent Smith

Chief Financial Officer and Treasurer

Brent Smith

Brent Smith

Chief Financial Officer and Treasurer

Phone: 713-350-6045

Email: bsmith@mainstcapital.com

Location: Houston, Texas

Brent D. Smith has served as Chief Financial Officer and Treasurer since November 2014 and previously as Senior Vice President—Finance since August 2014. Mr. Smith also currently serves as Chief Financial Officer and Treasurer of MSC Income. He previously served as Executive Vice President, Chief Financial Officer and Treasurer of Cal Dive International, Inc. from 2010 through June 2014 and in various finance and accounting roles at Cal Dive from 2005 through 2010. Prior to joining Cal Dive, Mr. Smith was a manager with FTI Consulting (NYSE: FCN). Prior to that, Mr. Smith, a certified public accountant, was employed as a senior auditor at Arthur Andersen LLP.

Jason Beauvais

Senior Vice President, General Counsel, Chief Compliance Officer and Secretary

Jason Beauvais

Jason Beauvais

Senior Vice President, General Counsel, Chief Compliance Officer and Secretary

Phone: 713-350-6043

Email: jbeauvais@mainstcapital.com

Location: Houston, Texas

Jason B. Beauvais has served as Senior Vice President, General Counsel, Chief Compliance Officer and Secretary since 2012. Previously, Mr. Beauvais served as Vice President, General Counsel and Secretary since 2008. He also currently serves as Senior Vice President, General Counsel, Chief Compliance Officer and Secretary of MSC Income and as chair of the BDC Council Legal Committee of the Small Business Investor Alliance (SBIA), the BDC and small business investment company trade association. From 2006 through 2008, Mr. Beauvais was an attorney with Occidental Petroleum Corporation (NYSE: OXY), an international oil and gas exploration and production company. Prior to joining Occidental Petroleum Corporation, Mr. Beauvais practiced corporate and securities law at Baker Botts L.L.P., where he primarily counseled companies in public issuances and private placements of debt and equity and handled a wide range of general corporate and securities matters as well as mergers and acquisitions.