X0407 4 2023-03-20 0 0000810332 MESA AIR GROUP INC MESA 0001244796 RICH BRADFORD R C/O MESA AIR GROUP, INC. 410 N. 44TH STREET, SUITE 700 PHOENIX AZ 85008 0 1 0 0 EVP & Chief Operating Officer 0 Common Stock 2023-03-20 4 M 0 21300 0.00 A 67794 D Common Stock 2023-03-20 4 F 0 10170 2.10 D 57624 D Common Stock 2023-03-20 4 M 0 4607 0.00 A 62231 D Common Stock 2023-03-20 4 F 0 2200 2.10 A 60031 D Common Stock 2023-03-20 4 M 0 15723 0.00 A 75754 D Common Stock 2023-03-20 4 F 0 7508 2.10 D 68246 D Restricted Stock Unit Award 0.00 2023-03-14 4 A 0 95238 0.00 A 2024-03-20 Common Stock 95238 165527 D Restricted Stock Unit 0.00 2023-03-20 4 M 0 21300 0.00 D Common Stock 21300 144227 D Restricted Stock Unit 0.00 2023-03-20 4 M 0 4607 0.00 D Common Stock 4607 139620 D Restricted Stock Unit 0.00 2023-03-20 4 M 0 15723 0.00 D Common Stock 15723 123897 D Each restricted stock unit ("RSU") represents a contingent right to receive, on a one-for-one basis, common stock of the Issuer. An RSU award of 95,238 was granted under the 2018 Equity Incentive Plan on March 14, 2023. This award shall vest annually in three equal installments beginning on March 20, 2024, March 20, 2025 and March 20, 2026, until fully vested. A restricted stock unit award of 63,898 was granted under the 2018 Equity Incentive Plan on March 26, 2020. This award is fully vested. A restricted stock unit award of 13,822 was granted under the 2018 Equity Incentive Plan on March 20, 2021. These restricted stock units shall vest annually in equal one-third increments beginning on March 20, 2022, until fully vested. A restricted stock unit award was granted under the 2018 Equity Incentive Plan on March 23, 2022. This award will vest as follows: 15,723 on March 20, 2023, 15,723 on March 20, 2024, and 15,724 on March 20, 2025. /s/ Bradford Rich 2023-03-22