Mesa Air Group, Inc. (“Mesa” or the “Company”) (NASDAQ: MESA) today announced that the underwriters of its previously announced initial public offering of 9,630,000 common shares of the Company, which closed on August 14, 2018, have partially exercised their overallotment option to purchase an additional 1,344,500 common shares at a price of $12.00 per share. The exercise of the underwriters’ option closed on September 11, 2018, with 723,985 of the common shares purchased directly from the Company and the remaining 620,515 common shares purchased directly from the selling shareholders. The Company has now sold a total of 10,353,985 common shares in connection with the offering, raising gross proceeds of approximately $124,247,820. The Company did not receive any proceeds from the sale of the common shares by the selling shareholders.

Raymond James and BofA Merrill Lynch acted as lead book-running managers for the offering. Cowen, Stifel and Imperial Capital acted as additional book-running managers for the offering.

A copy of the final prospectus for the offering may be obtained for free by visiting the SEC website at http://www.sec.gov. Alternatively, a copy of the prospectus related to this offering may be obtained from Raymond James & Associates, Inc., 880 Carillon Parkway, St. Petersburg, FL 33716, telephone: (800) 248-8863, email: prospectus@raymondjames.com; or BofA Merrill Lynch, attention: Prospectus Department, NC1-004-03-43, 200 North College Street 3rd floor, Charlotte, NC 28255-0001, email: dg.prospectus_requests@baml.com. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, 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.