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      <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>Tobias Paul Davison</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
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      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>5000</noOfUnitsSold>
      <aggregateMarketValue>419450.00</aggregateMarketValue>
      <noOfUnitsOutstanding>14740465</noOfUnitsOutstanding>
      <approxSaleDate>08/07/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>08/17/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Employee Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>5140</amountOfSecuritiesAcquired>
      <paymentDate>08/17/2021</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/03/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Employee Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>399</amountOfSecuritiesAcquired>
      <paymentDate>03/03/2021</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul D Tobias Revocable Trust</name>
        <address>
          <com:street1>1336 N. Cranbrook Road</com:street1>
          <com:city>Bloomfield Village</com:city>
          <com:stateOrCountry>MI</com:stateOrCountry>
          <com:zipCode>48301</com:zipCode>
        </address>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/03/2023</saleDate>
      <amountOfSecuritiesSold>500</amountOfSecuritiesSold>
      <grossProceeds>42269.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Account registration at Schwab: PAUL D TOBIAS REVOCABLE TRUST, Paul D Tobias ttee</remarks>
    <noticeSignature>
      <noticeDate>08/07/2023</noticeDate>
      <signature>Paul D Tobias</signature>
    </noticeSignature>
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144
0001312334
XXXXXXXX
LIVE
0001174850
NICOLET BANKSHARES INC
001-37700
111 N WASHINGTON ST
GREEN BAY
WI
54301
920 430 1400
Tobias Paul Davison
Officer
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
5000
419450.00
14740465
08/07/2023
NYSE
Common
08/17/2021
Employee Compensation
Issuer
N
5140
08/17/2021
Equity Compensation
Common
03/03/2021
Employee Compensation
Issuer
N
399
03/03/2021
Equity Compensation
N
Paul D Tobias Revocable Trust
1336 N. Cranbrook Road
Bloomfield Village
MI
48301
Common
08/03/2023
500
42269.00
Account registration at Schwab: PAUL D TOBIAS REVOCABLE TRUST, Paul D Tobias ttee
08/07/2023
Paul D Tobias