<ACCESSION-NUMBER>0001564590-18-019924 <TYPE>8-K <PUBLIC-DOCUMENT-COUNT>3 <PERIOD>20180807 <ITEMS>2.02 <ITEMS>9.01 <FILING-DATE>20180807 <DATE-OF-FILING-DATE-CHANGE>20180807 <FILER> <COMPANY-DATA> <CONFORMED-NAME>Inogen Inc <CIK>0001294133 <ASSIGNED-SIC>3842 <IRS-NUMBER>000000000 <STATE-OF-INCORPORATION>DE </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>8-K <ACT>34 <FILE-NUMBER>001-36309 <FILM-NUMBER>18998019 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>326 BOLLAY DRIVE <CITY>GOLETA <STATE>CA <ZIP>93117 <PHONE>805-562-0500 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>326 BOLLAY DRIVE <CITY>GOLETA <STATE>CA <ZIP>93117 </MAIL-ADDRESS> </FILER>