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      <issuerName>Portillo's Inc.</issuerName>
      <secFileNumber>001-40951</secFileNumber>
      <issuerAddress>
        <com:street1>C/O THE PORTILLO RESTAURANT GROUP</com:street1>
        <com:street2>2001 SPRING ROAD, SUITE 400</com:street2>
        <com:city>OAK BROOK</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60523-1903</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>(630) 954-3773</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Cook George Richard III</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
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    <securitiesInformation>
      <securitiesClassTitle>Class A</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>
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      <noOfUnitsSold>18662</noOfUnitsSold>
      <aggregateMarketValue>353666.64</aggregateMarketValue>
      <noOfUnitsOutstanding>48541285</noOfUnitsOutstanding>
      <approxSaleDate>03/10/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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      <securitiesClassTitle>Class A</securitiesClassTitle>
      <acquiredDate>03/10/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted-05/12/2020</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>16000</amountOfSecuritiesAcquired>
      <paymentDate>03/10/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <acquiredDate>10/21/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2662</amountOfSecuritiesAcquired>
      <paymentDate>10/21/2022</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>03/10/2023</noticeDate>
      <signature>/s/ Lisa Gerard, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for George R. Cook</signature>
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144
0001887477
XXXXXXXX
LIVE
0001871509
Portillo's Inc.
001-40951
C/O THE PORTILLO RESTAURANT GROUP
2001 SPRING ROAD, SUITE 400
OAK BROOK
IL
60523-1903
(630) 954-3773
Cook George Richard III
Officer
Class A
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
18662
353666.64
48541285
03/10/2023
NASDAQ
Class A
03/10/2023
Option Granted-05/12/2020
Issuer
N
16000
03/10/2023
Cash
Class A
10/21/2022
Restricted Stock Vesting
Issuer
N
2662
10/21/2022
Compensation
Y
03/10/2023
/s/ Lisa Gerard, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for George R. Cook