Mesa Air Group replaces auditor RSM with Marcum LLP; cites no disagreements but prior material weaknesses

REPUBLIC AIRWAYS HOLDINGS INC.

Audit Committee dismissed RSM and appointed Marcum as independent auditor effective May 24, 2024.
No disagreements with RSM on accounting principles or audit scope during fiscal 2023 and subsequent interim period.
Prior material weaknesses disclosed: ITGC deficiencies and failure to monitor debt covenant compliance, plus omitted impairment disclosure.
RSM's letter filed as Exhibit 16.1; no consultations with Marcum before appointment.

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