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<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001430462</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>
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</headerData>
<formData>
<issuerInfo>
<issuerCik>0001756262</issuerCik>
<issuerName>TransMedics Group, Inc.</issuerName>
<secFileNumber>001-38891</secFileNumber>
<issuerAddress>
<street1 xmlns="http://www.sec.gov/edgar/common">200 MINUTEMAN ROAD</street1>
<city xmlns="http://www.sec.gov/edgar/common">ANDOVER</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</issuerAddress>
<issuerContactPhone>978-5520900</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Khayal Tamer I</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Officer</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Morgan Stanley Smith Barney LLC</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">2000 Westchester Ave</street1>
<city xmlns="http://www.sec.gov/edgar/common">Purchase</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">NY</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">10577-2530</zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>1317</noOfUnitsSold>
<aggregateMarketValue>115408.71</aggregateMarketValue>
<noOfUnitsOutstanding>32715316</noOfUnitsOutstanding>
<approxSaleDate>03/08/2024</approxSaleDate>
<securitiesExchangeName>Nasdaq</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<acquiredDate>03/08/2024</acquiredDate>
<natureOfAcquisitionTransaction>Vesting of Restricted Stock Units - See Remarks</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>TransMedics Group, Inc.</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>1317</amountOfSecuritiesAcquired>
<paymentDate>03/08/2024</paymentDate>
<natureOfPayment>Equity Compensation</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/16/2024</saleDate>
<amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
<grossProceeds>804087.78</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/23/2024</saleDate>
<amountOfSecuritiesSold>2330</amountOfSecuritiesSold>
<grossProceeds>209909.70</grossProceeds>
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<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>02/07/2024</saleDate>
<amountOfSecuritiesSold>736</amountOfSecuritiesSold>
<grossProceeds>66306.24</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
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</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>02/14/2024</saleDate>
<amountOfSecuritiesSold>3050</amountOfSecuritiesSold>
<grossProceeds>274591.50</grossProceeds>
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<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
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</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>02/15/2024</saleDate>
<amountOfSecuritiesSold>776</amountOfSecuritiesSold>
<grossProceeds>69840</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
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<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>02/16/2024</saleDate>
<amountOfSecuritiesSold>2858</amountOfSecuritiesSold>
<grossProceeds>257220</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
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<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>02/20/2024</saleDate>
<amountOfSecuritiesSold>250</amountOfSecuritiesSold>
<grossProceeds>22500</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>03/01/2024</saleDate>
<amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
<grossProceeds>829891.92</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Tamer Khayal</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">c/o TransMedics Group, Inc.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">200 Minuteman Road</street2>
<city xmlns="http://www.sec.gov/edgar/common">Andover</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">01810</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>03/08/2024</saleDate>
<amountOfSecuritiesSold>100</amountOfSecuritiesSold>
<grossProceeds>9004</grossProceeds>
</securitiesSoldInPast3Months>
<remarks>Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units.</remarks>
<noticeSignature>
<noticeDate>03/18/2024</noticeDate>
<signature>/s/ Tamer Khayal</signature>
</noticeSignature>
</formData>
</edgarSubmission>
