MESA AIR GROUP INC

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended September 30,2025

Or

FOR THE TRANSITION PERIOD FROM TO

Commission File Number 001-38626

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (602)685-4000

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ No☒

As of November 14, 2025, the registrant had 41,886,643 shares of common stock, no par value per share, issued and outstanding.

TABLE OF CONTENTS

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical fact contained in this Quarterly Report on Form 10-Q, including statements regarding our future results of operations and financial position, business strategy and plans, and objectives of management for future operations, are forward-looking statements. These statements involve known and unknown risks, uncertainties, and other important factors that may cause our actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking statements.

Forward-looking statements provide current expectations of future events based on certain assumptions and include any statement that does not directly relate to any historical or current fact. Forward-looking statements can also be identified by words such as "future," "anticipates," "believes," "estimates," "expects," "intends," "plans," "predicts," "will," "would," “should,” "could," "can," "may," and similar terms. Forward-looking statements are not guarantees of future performance and our actual results may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such differences include, but are not limited to, those discussed in Item 1A. Risk Factors of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024 and our Transition Report on Form 10-KT for the transition period ended December 31, 2024, filed with the Securities and Exchange Commission on May 13, 2025 and November 20, 2025, respectively. Unless otherwise stated, references to particular years, quarters, months, or periods refer to our fiscal years ended December 31 and the associated quarters, months, and periods of those fiscal years. Each of the terms "the Company," "Mesa Airlines," "Mesa," "we," "us" and "our" as used herein refers collectively to Mesa Air Group, Inc. and its wholly owned subsidiaries, unless otherwise stated. We do not assume any obligation to revise or update any forward-looking statements.

The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Some of the key factors that could cause actual results to differ from our expectations include:

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public health epidemics or pandemics;

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the supply and retention of qualified airline pilots and mechanics and associated costs;

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the volatility of pilot and mechanic attrition;

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dependence on, and changes to, or non-renewal of, our Amended and Restated United Capacity Purchase Agreement;

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failure to meet certain operational performance targets in our Amended and Restated United Capacity Purchase Agreement, which could result in termination of such agreement;

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increases in our labor costs;

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reduced utilization - the percentage derived from dividing (i) the number of block hours actually flown during a given month by (ii) the maximum number of block hours that could be flown during such month under our capacity purchase agreement;

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the direct operation of regional jets for United Airlines, Inc. ("United");

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the financial strength of United and its ability to successfully manage its businesses through potential adverse events impacting the industry

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restrictions under our Amended and Restated United Capacity Purchase Agreement to enter into new regional air carrier service agreements, which will remain in place until the earlier to occur of (i) January 1, 2026 and (ii) the Company’s satisfaction of certain Performance Milestones (as defined in the Amended and Restated United CPA);

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our significant amount of debt and other contractual obligations;

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our compliance with ongoing financial covenants under our credit facilities

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our ability to keep costs low and execute our growth strategies; and

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the effects of extreme or severe weather conditions that impacts our ability to complete scheduled flights.

While we may elect to update these forward-looking statements at some point in the future, whether as a result of any new information, future events, or otherwise, we have no current intention of doing so except to the extent required by applicable law.