Filed Pursuant to Rule 424(b)(4)
Registration No. 333-251290
Prospectus
MESA AIR GROUP, INC.

4,899,497 Shares of Common Stock
Warrants to Purchase 4,899,497 Shares of Common Stock
This prospectus covers the offer, resale or other disposition from time by the selling securityholder named herein of (i) warrants (each, a “Warrant” and, collectively, the “Warrants”) to purchase up to 4,899,497 shares of our common stock, no par value (“common stock”), and (ii) 4,899,497 shares of our common stock underlying the Warrants (the “Warrant Shares”). The Warrants and Warrant Shares are collectively referred to herein as the “Securities”. We are not selling any Warrants or Warrant Shares under this prospectus and will not receive any proceeds from the sale of Warrants or Warrant Shares by the selling securityholder. The selling securityholder will bear all commissions and discounts, if any, attributable to the sale of the shares of common stock. We will bear all costs, expenses and fees in connection with the registration of the shares of common stock.
On October 30, 2020 (the “Treasury Loan Closing Date”), we, along with Mesa Airlines, Inc., our wholly-owned subsidiary, and certain other parties thereto entered into a Loan and Guarantee Agreement (the “Treasury Loan Agreement”) with the U.S. Department of the Treasury (“Treasury”) with respect to the loan program under the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). In connection with our entry into the Treasury Loan Agreement, on the Treasury Loan Closing Date, we entered into a Warrant Agreement (“Warrant Agreement”) with Treasury.
Pursuant to the Treasury Loan Agreement, we received financial assistance from Treasury in the aggregate amount of $195.0 million. As compensation to Treasury for the provision of financial assistance under the Treasury Loan Agreement, we issued Warrants to Treasury to purchase up to an aggregate of 4,899,497 shares of our common stock at an initial exercise price of $3.98 per share, which was the closing price of our common stock on the Nasdaq Global Select Market on April 9, 2020. The number of Warrant Shares to be issued is subject to adjustment as a result of anti-dilution adjustments contained in the Warrants.
Pursuant to the Warrant Agreement, we agreed to file a registration statement, of which this prospectus is a part, with the Securities and Exchange Commission (“SEC”) to register the disposition of the maximum number of Warrants and Warrant Shares.
The Warrants and Warrant Shares may be sold by the selling securityholder to or through underwriters or dealers, directly to purchasers or through agents designated from time to time. For additional information regarding the methods of sale, you should refer to the section of this prospectus entitled “Plan of Distribution” on page 13.
We may amend or supplement this prospectus from time to time by filing amendments or supplements as required. You should read the entire prospectus and any amendments or supplements carefully before you make your investment decision.
INVESTING IN THE SECURITIES DESCRIBED IN THIS PROSPECTUS INVOLVES RISKS. YOU SHOULD CAREFULLY READ AND CONSIDER “RISK FACTORS” BEGINNING ON PAGE 5 OF THIS PROSPECTUS AS WELL AS THE RISK FACTORS CONTAINED IN DOCUMENTS WE FILE WITH THE SECURITIES AND EXCHANGE COMMISSION, WHICH ARE INCORPORATED BY REFERENCE INTO THIS PROSPECTUS, BEFORE INVESTING IN OUR SECURITIES.
Our common stock is listed on The Nasdaq Global Select Market under the symbol “MESA.” The last reported sale price of our common stock on The Nasdaq Global Select Market on April 19, 2021 was $11.70 per share. There is no established trading market for the Warrants and we do not expect a market to develop. In addition, we do not intend to list the Warrants on any securities exchange or automated quotation system.
Neither the SEC nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.
The date of this prospectus is April 28, 2021.