content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001253903</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001174850</issuerCik>
        <issuerName>NICOLET BANKSHARES INC</issuerName>
        <secFileNumber>001-37700</secFileNumber>
        <issuerAddress>
          <com:street1>111 N WASHINGTON ST</com:street1>
          <com:city>GREEN BAY</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>920 430 1400</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ATWELL ROBERT BRUCE</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>3446</noOfUnitsSold>
        <aggregateMarketValue>389398.00</aggregateMarketValue>
        <noOfUnitsOutstanding>15211674</noOfUnitsOutstanding>
        <approxSaleDate>12/02/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>12/02/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted 05/16/2017</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3446</amountOfSecuritiesAcquired>
        <paymentDate>12/02/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>10/18/2024</saleDate>
        <amountOfSecuritiesSold>2908</amountOfSecuritiesSold>
        <grossProceeds>300162.02</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>10/22/2024</saleDate>
        <amountOfSecuritiesSold>2500</amountOfSecuritiesSold>
        <grossProceeds>252520.44</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>10/28/2024</saleDate>
        <amountOfSecuritiesSold>2721</amountOfSecuritiesSold>
        <grossProceeds>280263.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>10/29/2024</saleDate>
        <amountOfSecuritiesSold>200</amountOfSecuritiesSold>
        <grossProceeds>20600.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>10/30/2024</saleDate>
        <amountOfSecuritiesSold>14171</amountOfSecuritiesSold>
        <grossProceeds>1459613.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Stella Maris Foundation</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>11/05/2024</saleDate>
        <amountOfSecuritiesSold>500</amountOfSecuritiesSold>
        <grossProceeds>300120.72</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>11/07/2024</saleDate>
        <amountOfSecuritiesSold>14</amountOfSecuritiesSold>
        <grossProceeds>1540.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Stella Maris Foundation</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>11/07/2024</saleDate>
        <amountOfSecuritiesSold>500</amountOfSecuritiesSold>
        <grossProceeds>54771.80</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Robert Atwell</name>
          <address>
            <com:street1>111 North Washington Street</com:street1>
            <com:city>Green Bay</com:city>
            <com:stateOrCountry>WI</com:stateOrCountry>
            <com:zipCode>54301</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>11/08/2024</saleDate>
        <amountOfSecuritiesSold>9986</amountOfSecuritiesSold>
        <grossProceeds>1098460.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <remarks>The sales that occurred 11/05/2024 and 11/07/2024 in 3 month history are from the Stella Maris Foundation account, of which Robert Atwell is an account stakeholder.</remarks>
      <noticeSignature>
        <noticeDate>12/02/2024</noticeDate>
        <signature>/s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Robert Atwell.</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 8363}]
text: 144
  0001253903
  XXXXXXXX
  LIVE
  0001174850
  NICOLET BANKSHARES INC
  001-37700
  111 N WASHINGTON ST
  GREEN BAY
  WI
  54301
  920 430 1400
  ATWELL ROBERT BRUCE
  Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  3446
  389398.00
  15211674
  12/02/2024
  NYSE
  Common
  12/02/2024
  Option Granted 05/16/2017
  Issuer
  N
  3446
  12/02/2024
  Cash
  N
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/18/2024
  2908
  300162.02
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/22/2024
  2500
  252520.44
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/28/2024
  2721
  280263.00
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/29/2024
  200
  20600.00
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/30/2024
  14171
  1459613.00
  Stella Maris Foundation
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  11/05/2024
  500
  300120.72
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  11/07/2024
  14
  1540.00
  Stella Maris Foundation
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  11/07/2024
  500
  54771.80
  Robert Atwell
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  11/08/2024
  9986
  1098460.00
  The sales that occurred 11/05/2024 and 11/07/2024 in 3 month history are from the Stella Maris Foundation account, of which Robert Atwell is an account stakeholder.
  12/02/2024
  /s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Robert Atwell.