Board of Directors

Dwayne Hyzak

Chairman of the Board and Chief Executive Officer

Dwayne Hyzak is MSC Income’s Chief Executive Officer and Chairman of the Board of Directors. Mr. Hyzak has served in these roles and as a Senior Managing Director since October 2020. Mr. Hyzak also serves as Chief Executive Officer and as a Senior Managing Director of Main Street and MSC Adviser, MSC Income’s investment adviser and a wholly owned portfolio company of Main Street, and as a member of Main Street’s Board of Directors. He also serves as a member of Main Street’s management team’s executive and investment committees. Previously, Mr. Hyzak served in several other executive roles at Main Street from 2011 to 2018, including as its President (2015 until 2018), Chief Operating Officer (2014 until 2018), Chief Financial Officer (2011 until 2014) and in other senior executive positions at Main Street prior to 2011. Prior to its IPO in 2007, Mr. Hyzak served as a Senior Managing Director and in other executive positions of several Main Street predecessor funds and entities, which are now subsidiaries of Main Street. Mr. Hyzak joined Main Street in 2002, becoming one of the founding members of the firm. Prior to joining Main Street, Mr. Hyzak was a Director of Acquisitions and 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 Quanta’s mergers and acquisitions and corporate finance activities. Previously, Mr. Hyzak was a Manager at Arthur Andersen LLP 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.

Robert L. Kay

Independent Director

Mr. Kay has been an independent director since October 2020 and Chair of the Nominating and Corporate Governance Committee since January 2025. Mr. Kay has more than 40 years of broad based banking, investments, private equity intermediary and private business management experience, including commercial loan and venture capital investment portfolio oversight. After spending the first 10 years of his career as a corporate lender with a major Texas bank holding company in Dallas, he returned to his hometown in Austin where he spent the next eight years in the venture investing arena. Beginning in 1990, Mr. Kay served as Chief Executive Officer and/or Chief Operating Officer of multiple start up, growth phase and turnaround operating company situations, including serving as Chief Operating Officer and Chief Financial Officer of DrillingInfo from 2006 until its sale in 2012. Mr. Kay has served as the managing member and Chief Executive Officer of Excelleration Partners, an early stage investment firm since 2012. Mr. Kay currently serves as Chief Executive Officer of halFILE Systems Corporation, a software and data subscription business located in Kyle, Texas, as the Chairman of the Board and interim Chief Executive Officer of Myocardial Solutions, Inc., a healthcare technology company located in Raleigh, North Carolina, and as a Director of The Muny Conservancy, a non-profit organization located in Austin, Texas. Mr. Kay earned a B.B.A. in general business (accounting concentration) from the University of Texas.

John O. Niemann, Jr.

Independent Director, Lead Independent Director

Mr. Niemann has been an independent director since 2012 and Lead Independent Director and Chair of the Compensation Committee since January 2025. He is the President and Chief Operating Officer of Arthur Andersen LLP and has been since 2003. He previously served as a Managing Director of Andersen Tax LLC from June 2013 until his retirement from this position in March 2023. He previously served on the administrative board of Arthur Andersen LLP and on the board of partners of Andersen Worldwide. He began his career at Arthur Andersen LLP in 1978 and has served in increasing responsibilities in senior management positions, since 1992. Mr. Niemann has served as a director and Chairman of the Audit Committee of Hines Global Income Trust since July 2014 and as the lead independent director since May 2019. He previously served as a director of Adams Resources & Energy, Inc. from May 2019 to February 2025 and as a director of Professional Asset Indemnity Limited, a non-public Bermuda captive insurance company, from October 2021 until it was voluntarily wound up in March 2024. Mr. Niemann has served on the board of directors of many Houston area non-profit organizations, including Catholic Endowment Foundation of Galveston-Houston, Strake Jesuit College Preparatory School (past chair of the board), The Regis School of the Sacred Heart (past chair of the board), The Houston Symphony, The University of St. Thomas, The Alley Theatre and Taping for the Blind, Inc. He graduated with a B.A. in Managerial Studies (magna cum laude) and a master’s degree in accounting from Rice University, received a J.D. (summa cum laude) from the South Texas College of Law and an LL.M. in taxation (summa cum laude) from the University of San Francisco School of Law.

Jeffrey B. Walker

Independent Director

Mr. Walker has been an independent director and Chair of the Audit Committee since October 2020. Mr. Walker retired in May 2020 after a successful 38 year career in public accounting with Arthur Andersen and, more recently, Deloitte Tax, LLP where he held several leadership roles including, most recently, Vice Chairman from 2014 until May 2020. Mr. Walker served as a member of Deloitte LLP’s board from 2011 until 2015 and also served as the Chief Development Officer of Deloitte Tax from 2013 until 2015. During Mr. Walker’s tenure with Deloitte, he assisted and advised some of the world’s leading private equity firms. Mr. Walker is a certified public accountant and a member of the AICPA and Texas State Board of CPAs and earned a B.B.A. in Accounting and Economics from the University of Mississippi.