Mayville Engineering Company, Inc. Announces Launch of Initial Public Offering

Mayville Engineering Company, Inc. (“MEC”) today announced the launch of its initial public offering of 6,250,000 shares of common stock. The initial public offering price is expected to be between $19.00 and $21.00 per share, before underwriting discounts and commissions. In addition, the company expects to grant the underwriters a 30-day option to purchase up to an additional 937,500 shares of common stock at the initial public offering price, less underwriting discounts and commissions. MEC’s existing stockholders will not sell any shares in the offering. MEC has applied to list its common stock on the New York Stock Exchange under the ticker symbol “MEC.”

MEC expects to receive gross proceeds of approximately $125.0 million from the offering, or approximately $143.8 million if the underwriters exercise their option in full, assuming the shares price at the mid-point of the offering range. MEC intends to use the gross proceeds from the offering to repay outstanding indebtedness and for general corporate purposes.

Baird, Citigroup and Jefferies are acting as lead book-running managers for the offering. UBS Investment Bank and William Blair are also acting as joint book-running managers for the offering.

The offering will be made only by means of a prospectus. Copies of the preliminary prospectus relating to this offering may be obtained from Robert W. Baird & Co. Incorporated, Attention: Syndicate Department, 777 East Wisconsin Avenue, Milwaukee, WI 53202, by telephone at (800) 792-2473, or by email at syndicate@rwbaird.com; Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (800) 831-9146; or Jefferies LLC, Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 2nd Floor, New York, NY 10022, by telephone at (877) 821-7388, or by email at prospectus_department@jefferies.com.

A registration statement relating to these securities has been filed with the SEC but has not yet become effective. It may be obtained by visiting the SEC’s website www.sec.gov. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About MEC

Founded in 1945, MEC is a leading U.S.-based value-added manufacturing partner that provides a broad range of prototyping and tooling, production fabrication, coating, assembly and aftermarket services. Our customers operate in diverse end markets, including heavy- and medium-duty commercial vehicle, construction, powersports, agriculture, military and other end markets. Along with process engineering and development services, MEC maintains an extensive manufacturing infrastructure in 21 facilities across eight states. These facilities make it possible to offer conventional and CNC stamping, shearing, fiber laser cutting, forming, drilling, tapping, grinding, tube bending, machining, welding, assembly and logistic services. MEC also possesses a broad range of finishing capabilities including shot blasting, e-coating, powder coating, wet spray and military grade chemical agent resistant coating (CARC) painting.

Cautionary Statement Concerning Forward-Looking Statements

Certain statements contained in this press release constitute forward-looking statements within the meaning of the U.S. securities laws. MEC’s management has based these forward-looking statements on its current expectations, assumptions, estimates and projections with respect to the offering and the proceeds it expects to receive from the offering. While they believe these expectations, assumptions, estimates and projections are reasonable, such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which are beyond management’s control. These statements involve risks and uncertainties that may cause MEC’s actual results, performance or achievements to differ materially from any future results, performance or achievements expressed or implied by these forward-looking statements. MEC undertakes no obligation to update or revise any of the forward-looking statements contained herein, whether as a result of new information, future events or otherwise.