X0306 4 2019-03-01 0 0001294133 Inogen Inc INGN 0001751365 Sanford Bart Ben C/O INOGEN, INC. 326 BOLLAY DRIVE GOLETA CA 93117 0 1 0 0 EVP, Operations Common Stock 2019-03-01 4 A 0 3271 0.00 A 4694 D Common Stock 2019-03-01 4 A 0 614 0.00 A 5308 D Common Stock 2019-03-01 4 F 0 150 106.97 D 5158 D The reported securities represent shares of restricted stock, 25% of which shall vest on March 1, 2020, and 1/16th of which shall vest every three months thereafter on the 1st day of the month, subject in each case to the reporting person remaining a service provider through each such applicable vesting date. The reported securities represent shares earned and vested on March 1, 2019 based on achievement of the financial performance conditions for the 2018 fiscal year that were approved as part of the 2018 performance-based restricted stock award granted on September 17, 2018. The reported shares were withheld in a net issuance to cover the Reporting Person's tax withholding liability in connection with the portion of the 2018 performance-based restricted stock award that was earned and vested on March 1, 2019. /s/ Alison Bauerlein, as Attorney-in- Fact 2019-03-05