content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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  <submissionType>144</submissionType>
  <filerInfo>
  <filer>
  <filerCredentials>
  <cik>0001868735</cik>
  <ccc>XXXXXXXX</ccc>
  </filerCredentials>
  </filer>
  <liveTestFlag>LIVE</liveTestFlag>
  </filerInfo>
  </headerData>
  <formData>
  <issuerInfo>
  <issuerCik>0001294133</issuerCik>
  <issuerName>Inogen Inc</issuerName>
  <secFileNumber>001-36309</secFileNumber>
  <issuerAddress>
  <street1 xmlns="http://www.sec.gov/edgar/common">859 Ward Drive</street1>
  <city xmlns="http://www.sec.gov/edgar/common">Goleta</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">93111</zipCode>
  </issuerAddress>
  <issuerContactPhone>(805)-562-0500</issuerContactPhone>
  <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Somer Jason </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
  <relationshipsToIssuer>
  <relationshipToIssuer>Officer</relationshipToIssuer>
  </relationshipsToIssuer>
  </issuerInfo>
  <securitiesInformation>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <brokerOrMarketmakerDetails>
  <name>MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE FINANCIAL SERVICES</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">1 New York Plaza</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">8th Floor</street2>
  <city xmlns="http://www.sec.gov/edgar/common">New York</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">NY</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">10004</zipCode>
  </address>
  </brokerOrMarketmakerDetails>
  <noOfUnitsSold>10000</noOfUnitsSold>
  <aggregateMarketValue>85600</aggregateMarketValue>
  <noOfUnitsOutstanding>23577109</noOfUnitsOutstanding>
  <approxSaleDate>05/10/2024</approxSaleDate>
  <securitiesExchangeName>Nasdaq</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>05/10/2024</acquiredDate>
  <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>10000</amountOfSecuritiesAcquired>
  <paymentDate>05/10/2024</paymentDate>
  <natureOfPayment>Equity Compensation</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <remarks>Shares sold were acquired at various dates.</remarks>
  <noticeSignature>
  <noticeDate>05/14/2024</noticeDate>
  <signature>Leslyn Cicekli</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 2808}]
text: 144
  0001868735
  XXXXXXXX
  LIVE
  0001294133
  Inogen Inc
  001-36309
  859 Ward Drive
  Goleta
  CA
  93111
  (805)-562-0500
  Somer Jason
  Officer
  Common Stock
  MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE FINANCIAL SERVICES
  1 New York Plaza
  8th Floor
  New York
  NY
  10004
  10000
  85600
  23577109
  05/10/2024
  Nasdaq
  Common Stock
  05/10/2024
  Restricted Stock Vesting
  Issuer
  N
  10000
  05/10/2024
  Equity Compensation
  Y
  Shares sold were acquired at various dates.
  05/14/2024
  Leslyn Cicekli