X0306 4 2023-03-01 0 0001294133 Inogen Inc INGN 0001751365 Sanford Bart Ben C/O INOGEN, INC. 301 COROMAR DRIVE GOLETA CA 93117 0 1 0 0 EVP, Operations Common Stock 2023-03-01 4 A 0 1135 0.00 A 10531 D Common Stock 2023-03-01 4 F 0 507 15.56 D 10024 D Common Stock 2023-03-01 4 M 0 2402 0.00 A 12426 D Common Stock 2023-03-01 4 F 0 1166 15.56 D 11260 D Restricted Stock Unit 2023-03-01 4 M 0 273 0.00 D Common Stock 273 1092 D Restricted Stock Unit 2023-03-01 4 M 0 236 0.00 D Common Stock 236 1881 D Restricted Stock Unit 2023-03-01 4 M 0 1893 0.00 D Common Stock 1893 3787 D The reported securities represent shares earned and vested on March 1, 2023 based on achievement of the financial performance conditions for the 2022 fiscal year that were approved as part of the 2022 performance-based restricted stock award granted on March 1, 2022. The reported shares were withheld to cover the Reporting Person's tax withholding liability in connection with the 2022 performance-based restricted stock award granted on March 1, 2022 and vested on March 1, 2023. The reported shares were withheld to cover the Reporting Person's tax withholding liability in connection with a portion of a time-based restricted stock award that vested on March 1, 2023. Each restricted stock unit represents a contingent right to receive one share of Inogen common stock. Subject to the reporting person's continued service, 25% of the restricted stock units shall vest on March 1, 2021, and 1/16th of the restricted stock units shall vest every three months thereafter on the 1st day of the month. Subject to the reporting person's continued service, 25% of the restricted stock units shall vest on March 1, 2022, and 1/16th of the restricted stock units shall vest every three months thereafter on the 1st day of the month. Subject to the reporting person's continued service, 1/3rd of the restricted stock units shall vest on March 1, 2023, and 1/3rd of the restricted stock units shall vest every year thereafter on the same day of the year as the vesting commencement date. /s/ Leslyn Cicekli, as Attorney-in-Fact 2023-03-02