First Trust Entities' Ownership in Wabash National Corporation

This Schedule 13G/A filing, submitted by First Trust Portfolios L.P., First Trust Advisors L.P., and The Charger Corporation, discloses their collective ownership of 118,010 shares, representing 0.29% of Wabash National Corporation's common stock. The filing is made pursuant to Rule 13d-1(b) and includes a joint filing agreement. The entities disclaim beneficial ownership of the shares held by unit investment trusts they sponsor, as these shares are voted by the trustee in a manner consistent with other shareholders. The filing also clarifies that the shares were acquired in the ordinary course of business and not for the purpose of influencing control of the issuer.