May 2019 Chartwell Financial Advisory (“Chartwell”) is pleased to announce that it assisted Mayville Engineering Company, Inc. (“Mayville,” “MEC,” or “the Company”) in successfully executing an initial public offering (“IPO”). Chartwell served as one of MEC’s financial advisors throughout the process, providing comprehensive counsel on ESOP related matters required to effectuate the offering. The Company successfully listed its shares on the New York Stock Exchange on May 9, 2019. Having successfully operated MEC as a 100% ESOP-owned company since 1985, the Board of Directors began exploring potential strategic alternatives to address the Company’s increasing repurchase obligation and capital expenditure constraints. Chartwell’s initial involvement with Mayville began in 2018. Leveraging its extensive corporate finance expertise and ESOP knowledge, Chartwell conducted a thorough review of MEC’s capital and ownership structure to determine potential growth capital options for the Company. Chartwell presented its analyses to the Board of Directors which ultimately concluded growth capital via public equity markets was the optimal solution for the Company and, more importantly, its shareholders. Following Chartwell’s strategic alternatives review for the MEC Board of Directors, Chartwell was retained by the Company to advise it throughout the IPO process on all ESOP related matters. CHARTWELL VALUE ADD Robert Kamphuis, Chairman, President, & Chief Executive Officer: “MEC selected Chartwell as our financial advisor because of their reputation and expertise in the ESOP marketplace. Throughout each step of the process, Chartwell provided valuable, in-depth analyses and guidance on a myriad of topics and considerations that allowed our Board of Directors and Executive team to make highly analyzed and informed decisions. Chartwell helped translate complex topics into clear and concise analyses that our Board could efficiently evaluate and endorse. Chartwell acted as a true partner on the deal with senior leadership throughout the process. We truly appreciate everything Chartwell has done during this process and ultimate transaction.” Todd Butz, Chief Financial Officer :“Chartwell’s advice and guidance have been instrumental to MEC over the past two years. The team is simply first class, both professionally and personally. Their deep knowledge and expertise in corporate finance and ESOP related transactions is unparalleled. Throughout each step of the process, Chartwell provided valuable, in-depth guidance on all growth capital alternatives available to MEC. With Chartwell’s guidance, this IPO will accomplish a wide range of stated objectives and MEC is thrilled with the outcomes achieved. MEC will continue to turn to Chartwell for all ESOP related and corporate finance matters as we continue building our nationally respected brand.” ABOUT MAYVILLE ENGINEERING COMPANY, INC. Founded in 1945, MEC is one of the nation’s leading supply chain partners for blue-chip original equipment manufacturers (“OEMs”). As a leading U.S.-based value-added manufacturer, MEC provides a broad range of prototyping and tooling, production fabrication, coating, assembly and aftermarket components. The Company’s customers operate in a diverse end-markets, including heavy-and medium-duty commercial vehicles, construction, powersports, agriculture, military and other industrial markets. Headquartered in Mayville, Wisconsin, MEC operates 21 facilities with almost three million square feet of manufacturing space strategically located near its customers in Arkansas, Michigan, Mississippi, Ohio, Pennsylvania, South Carolina, Virginia and Wisconsin. Investing in state-of-the-art technology and always improving processes has allowed MEC to consistently grow while meeting and exceeding its customers’ expectations. MEC remains majority employee-owned and its teams operate with a commitment to Personal Responsibility in Daily Excellence (P.R.I.D.E.), which drives a positive and safe working environment and leads to customer success and value creation. For more information, visit www.mecinc.com. ABOUT CHARTWELL FINANCIAL ADVISORY Chartwell provides comprehensive financial advisory and investment banking services to the middle market. With substantial corporate finance and capital markets expertise, Chartwell works with clients and their advisors to deliver independent, solutions-based advisory services that are unbiased to outcome, free from conflicts, and focused on optimizing client objectives. For more information about Chartwell, please visit www.chartwellfa.com. For additional information on this transaction, please contact Greg Fresh.