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>0001243706</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>DANIELS MICHAEL E</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <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>63551</noOfUnitsSold>
        <aggregateMarketValue>6766563.74</aggregateMarketValue>
        <noOfUnitsOutstanding>15211674</noOfUnitsOutstanding>
        <approxSaleDate>11/06/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>11/06/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 05/16/2017</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>63551</amountOfSecuritiesAcquired>
        <paymentDate>11/06/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Michael Daniels</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>08/26/2024</saleDate>
        <amountOfSecuritiesSold>1289</amountOfSecuritiesSold>
        <grossProceeds>127530.18</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Michael Daniels</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>08/28/2024</saleDate>
        <amountOfSecuritiesSold>1321</amountOfSecuritiesSold>
        <grossProceeds>130666.85</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Michael Daniels</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>08/29/2024</saleDate>
        <amountOfSecuritiesSold>8003</amountOfSecuritiesSold>
        <grossProceeds>792113.73</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Michael Daniels</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>08/30/2024</saleDate>
        <amountOfSecuritiesSold>10316</amountOfSecuritiesSold>
        <grossProceeds>1021043.64</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Michael Daniels</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>10/23/2024</saleDate>
        <amountOfSecuritiesSold>29071</amountOfSecuritiesSold>
        <grossProceeds>2938612.96</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>11/06/2024</noticeDate>
        <signature>/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael Daniels</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 5869}]
text: 144
  0001243706
  XXXXXXXX
  LIVE
  0001174850
  NICOLET BANKSHARES INC
  001-37700
  111 N WASHINGTON ST
  GREEN BAY
  WI
  54301
  920 430 1400
  DANIELS MICHAEL E
  Officer
  Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  63551
  6766563.74
  15211674
  11/06/2024
  NYSE
  Common
  11/06/2024
  Option Granted - 05/16/2017
  Issuer
  N
  63551
  11/06/2024
  Cash
  N
  Michael Daniels
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  08/26/2024
  1289
  127530.18
  Michael Daniels
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  08/28/2024
  1321
  130666.85
  Michael Daniels
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  08/29/2024
  8003
  792113.73
  Michael Daniels
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  08/30/2024
  10316
  1021043.64
  Michael Daniels
  111 North Washington Street
  Green Bay
  WI
  54301
  Common
  10/23/2024
  29071
  2938612.96
  11/06/2024
  /s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael Daniels