<?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">
<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0002010692</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>
</filerInfo>
</headerData>
<formData>
<issuerInfo>
<issuerCik>0001962738</issuerCik>
<issuerName>CASI Pharmaceuticals, INc.</issuerName>
<secFileNumber>001-41666</secFileNumber>
<issuerAddress>
<street1 xmlns="http://www.sec.gov/edgar/common">1701-1702, CHINA CENTRAL OFFICE TOWER 1</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">NO. 81 JIANGUO ROAD, CHAOYANG DISTRICT</street2>
<city xmlns="http://www.sec.gov/edgar/common">BEIJING</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">F4</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">100025</zipCode>
</issuerAddress>
<issuerContactPhone>86 10-6561 8789</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Panacea Innovation Ltd</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Owner</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Ordinary Shares</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Cantor Fitzgerald</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">110 East 59th Street</street1>
<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">10022</zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>171000</noOfUnitsSold>
<aggregateMarketValue>534186.90</aggregateMarketValue>
<noOfUnitsOutstanding>13378175</noOfUnitsOutstanding>
<approxSaleDate>03/15/2024</approxSaleDate>
<securitiesExchangeName>NASDAQ</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Ordinary Shares</securitiesClassTitle>
<acquiredDate>09/08/2022</acquiredDate>
<natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>Open Market Purchase</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>371517</amountOfSecuritiesAcquired>
<paymentDate>09/08/2022</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Panacea Innovation Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">C/O PANACEA VENTURE, NO. 5, LANE 1350</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">FUXING MIDDLE ROAD</street2>
<city xmlns="http://www.sec.gov/edgar/common">SHANGHAI</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">F4</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">200031</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Ordinary Shares</securitiesClassTitle>
<saleDate>03/05/2024</saleDate>
<amountOfSecuritiesSold>134000</amountOfSecuritiesSold>
<grossProceeds>925940.00</grossProceeds>
</securitiesSoldInPast3Months>
<noticeSignature>
<noticeDate>03/15/2024</noticeDate>
<signature>/s/ James Huang</signature>
</noticeSignature>
</formData>
</edgarSubmission>
