Executive Management

Effective August 2026, Mark Phelan serves as Accel’s President and Chief Executive Officer. In this role, he leads the company’s overall strategy, operations, and growth initiatives.

Mr. Phelan previously served as President – US Gaming beginning in October 2023 and as Accel’s Chief Revenue Officer beginning in 2017. He holds a B.A. in English Language and Literature and an M.A. in International Relations from the University of Chicago, as well as an M.B.A. from the University of Chicago Booth School of Business.

Brett Summerer is Chief Financial Officer at Accel Entertainment and brings 25 Years of operational discipline and growth experience as well as experience in regulated industries to his role. In his capacity as CFO, Brett oversees all financial aspects of the Company’s business, including internal and external financial reporting, internal audit, compliance and controls, investor relations, and the Company’s treasury and capital markets functions. Brett also works with other members of Accel’s senior management team on strategic planning, business development, and mergers and acquisitions.

Mr. Summerer previously held senior finance, operations, and IT roles across public, private, and founder-led companies. He has a strong record of delivering enterprise-wide transformational and sustainable growth, while balancing strategic investments with operational rigor. Mr. Summerer’s prior leadership roles at Kraft Heinz, Corning, and General Motors included managing global P&Ls, leading strategic initiatives, and driving profitable growth. Most recently, Mr. Summerer served as CFO of Verano Holdings, where he built a 70-person Finance and IT team, led multiple system implementations, and completed more than 20 M&A transactions in a regulated, multi-state company operating in a high-growth industry.

Mr. Summerer holds multiple Bachelor of Science degrees and a Master’s degree from Michigan State University, as well as an MBA in Finance and Accounting from the University of Michigan’s Ross School of Business.

Stan Guidroz serves as Chief Operating Officer of Accel Entertainment, overseeing the Company’s operational strategy and driving growth across its gaming and route operations. Prior to joining Accel, he founded and served as Chief Executive Officer of Toucan Gaming, LLC, a growing Louisiana gaming operator acquired by Accel in 2024.

Before founding Toucan Gaming, Mr. Guidroz spent 20 years with Jacobs Entertainment, Inc., where he served as Vice President of Southern Operations and led gaming, retail, restaurant, and fuel operations across multiple markets. He holds a Bachelor’s Degree and a Master of Business Administration from the University of Louisiana at Lafayette.

Scott Levin is the Chief Legal Officer and Secretary of Accel Entertainment, bringing over 30 years of executive leadership and legal advisory experience to the role. In this capacity, Levin oversees all legal affairs for the company and reports directly to Chief Executive Officer Mark Phelan.

Throughout his career, Levin has held senior leadership positions at a range of public and private companies across multiple industries. He previously served as CEO of FTD Companies, where he guided the company through key strategic initiatives while building a strong legal function. Levin was also the first General Counsel of Morton’s Restaurant Group, where he helped drive the company's international expansion in the hospitality sector. Most recently, Levin was Founder and Managing Director of Portco Advisors LLC, advising high-growth companies undergoing significant transformation. His prior roles also include General Counsel positions at Torex Retail and a number of successful startups such as Atlas Power Group, Coskata, eMac Digital, and OurHouse.

Levin holds a J.D. with Honors from George Washington University and a Bachelor of Arts from Boston College.

Prior to joining Accel, Mr. Arntzen was the President and Chief Executive Officer of Century Gaming, Inc. dba Century Gaming Technologies and Grand Vision Gaming. Mr. Arntzen’s experience in regulated gaming began when Montana first legalized poker games in 1986. Over the past 40 years Mr. Arntzen has remained entrenched in this industry, building large gaming routes in both Montana and Nevada, as well as starting a Video Gaming Machine manufacturing company which designs and assembles Class III regulated gaming devices. Arntzen earned a BS degree with High Honors in Business Finance from the University of Montana in 1977.

John Houseal has served as Accel’s Chief Commercial Officer since September 2026. Prior to joining Accel, Mr. Houseal spent seven years at InComm Payments, most recently as Vice President of Product Development and Growth, where he led the expansion of the VanillaDirect cash payments platform and InComm’s entry into route gaming in Georgia, Iowa, Nebraska, Pennsylvania and Texas. Before that, he was Chief Product Officer of Linq3 Technologies, a lottery and payments company acquired by InComm in 2019, and a Director at Jabian Consulting. Mr. Houseal began his career in consulting at KPMG, BearingPoint and Deloitte, where he led public health and healthcare engagements for the U.S. Centers for Disease Control and Prevention and the Department of Health and Human Services. He is a co-founder of GIVN Bottled Water and serves as Board Chair of Water is Basic. Mr. Houseal received a B.B.A. in Accounting from the University of Georgia.

Derek Harmer serves as Chief Compliance Officer for Accel, a role he has held since 2012. In this role, Mr. Harmer is responsible for overseeing Accel’s legal and regulatory compliance across the organization. Mr. Harmer also currently serves as Secretary of the Illinois Gaming Machine Operators Association.

Prior to his time with Accel, Mr. Harmer served as President of Stadium Technology Group, a software and systems company dedicated to creating race and sports book management systems for kiosk and mobile platforms. Before launching Stadium Technology, Mr. Harmer was the Senior Vice President of Progressive Gaming International Corporation, where he led a strategic business unit created to commercialize emerging gaming technologies.

Mr. Harmer also held numerous management positions at WMS Gaming Inc. including Director of Regulatory Affairs, Director of Native American Business Development, and Director of Sales. He began his career in the gaming industry by serving as Deputy Attorney General, where he was in-house counsel to the Nevada Gaming Control Board and Nevada Gaming Commission.

Mr. Harmer received a B.A. in Criminal Justice from the University of Illinois-Chicago and a J.D from Drake University.

Irina Feldman serves as Chief People Officer of Accel Entertainment, leading the Company’s human resources organization and people strategy.

Ms. Feldman brings more than 25 years of human resources leadership experience across public and private companies in the service, manufacturing, and industrial sectors. Prior to joining Accel, she served as Vice President of Human Resources for the Metals Processing Group of The Heico Companies, LLC. She previously held senior human resources leadership roles with Packaging Corporation of America, KapStone Paper and Packaging Corporation, and ABM Industries.

Ms. Feldman holds a BBA from the University of Wisconsin-Milwaukee and an MBA from Lake Forest Graduate School of Management.