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            <filer>
                <filerCredentials>
                    <cik>0001874041</cik>
                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerCik>0001831915</issuerCik>
            <issuerName>CYTEK BIOSCIENCES INC</issuerName>
            <secFileNumber>001-40632</secFileNumber>
            <issuerAddress>
                <ns2:street1>47215 Lakeview Blvd</ns2:street1>
                <ns2:city>Fremont</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94538</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>8779229835</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MING YAN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Fl.</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>40000</noOfUnitsSold>
            <aggregateMarketValue>338400.00</aggregateMarketValue>
            <noOfUnitsOutstanding>136360208</noOfUnitsOutstanding>
            <approxSaleDate>08/21/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>12/15/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Founders Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>40000</amountOfSecuritiesAcquired>
            <paymentDate>12/15/2014</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for MING YAN</name>
                <address>
                    <ns2:street1>47215 Lakeview Blvd</ns2:street1>
                    <ns2:city>Fremont</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94538</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/19/2023</saleDate>
            <amountOfSecuritiesSold>20000</amountOfSecuritiesSold>
            <grossProceeds>175182.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for MING YAN</name>
                <address>
                    <ns2:street1>47215 Lakeview Blvd</ns2:street1>
                    <ns2:city>Fremont</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94538</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/20/2023</saleDate>
            <amountOfSecuritiesSold>20000</amountOfSecuritiesSold>
            <grossProceeds>163668.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>08/21/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>11/17/2022</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Ming Yan</signature>
        </noticeSignature>
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144
0001874041
XXXXXXXX
LIVE
0001831915
CYTEK BIOSCIENCES INC
001-40632
47215 Lakeview Blvd
Fremont
CA
94538
8779229835
MING YAN
Officer
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Fl.
New York
NY
10004
40000
338400.00
136360208
08/21/2023
NASDAQ
Common
12/15/2014
Founders Shares
Issuer
N
40000
12/15/2014
N/A
N
10b5-1 Sales Plan for MING YAN
47215 Lakeview Blvd
Fremont
CA
94538
Common
07/19/2023
20000
175182.00
10b5-1 Sales Plan for MING YAN
47215 Lakeview Blvd
Fremont
CA
94538
Common
06/20/2023
20000
163668.00
08/21/2023
11/17/2022
/s/ Ming Yan