<SEC-DOCUMENT>0000899243-21-041023.txt : 20211021
<SEC-HEADER>0000899243-21-041023.hdr.sgml : 20211021
<ACCEPTANCE-DATETIME>20211021193540
ACCESSION NUMBER:		0000899243-21-041023
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20211021
FILED AS OF DATE:		20211021
DATE AS OF CHANGE:		20211021

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Partners LLC
		CENTRAL INDEX KEY:			0001312988
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338309

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

	FORMER NAME:	
		FORMER CONFORMED NAME:	Berkshire Partners LLC (d/b/a Stockbridge Investors)
		DATE OF NAME CHANGE:	20120313

	FORMER NAME:	
		FORMER CONFORMED NAME:	Berkshire Partners LLC
		DATE OF NAME CHANGE:	20041229

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Investors III LLC
		CENTRAL INDEX KEY:			0001505184
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338306

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617 227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Investors IV LLC
		CENTRAL INDEX KEY:			0001505185
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338305

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617 227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Fund VIII-A, L.P.
		CENTRAL INDEX KEY:			0001514454
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338308

	BUSINESS ADDRESS:	
		STREET 1:		C/O EIGHTH BERKSHIRE ASSOCIATES LLC
		STREET 2:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-227-0050

	MAIL ADDRESS:	
		STREET 1:		C/O EIGHTH BERKSHIRE ASSOCIATES LLC
		STREET 2:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Eighth Berkshire Associates LLC
		CENTRAL INDEX KEY:			0001888111
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338304

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116-5009
		BUSINESS PHONE:		(617) 227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116-5009

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Partners Holdings LLC
		CENTRAL INDEX KEY:			0001597786
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338303

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		(617) 227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BPSP, L.P.
		CENTRAL INDEX KEY:			0001597787
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338302

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		(617) 227-0050

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		35TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Berkshire Fund VIII, L.P.
		CENTRAL INDEX KEY:			0001514470
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40951
		FILM NUMBER:		211338307

	BUSINESS ADDRESS:	
		STREET 1:		C/O EIGHTH BERKSHIRE ASSOCIATES LLC
		STREET 2:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-227-0050

	MAIL ADDRESS:	
		STREET 1:		C/O EIGHTH BERKSHIRE ASSOCIATES LLC
		STREET 2:		200 CLARENDON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Portillo's Inc.
		CENTRAL INDEX KEY:			0001871509
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING PLACES [5812]
		IRS NUMBER:				871104304
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE PORTILLO RESTAURANT GROUP
		STREET 2:		2001 SPRING ROAD, SUITE 400
		CITY:			OAK BROOK
		STATE:			IL
		ZIP:			60523-1903
		BUSINESS PHONE:		(630) 954-3773

	MAIL ADDRESS:	
		STREET 1:		C/O THE PORTILLO RESTAURANT GROUP
		STREET 2:		2001 SPRING ROAD, SUITE 400
		CITY:			OAK BROOK
		STATE:			IL
		ZIP:			60523-1903
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-10-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001871509</issuerCik>
        <issuerName>Portillo's Inc.</issuerName>
        <issuerTradingSymbol>PTLO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001312988</rptOwnerCik>
            <rptOwnerName>Berkshire Partners LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001514454</rptOwnerCik>
            <rptOwnerName>Berkshire Fund VIII-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001514470</rptOwnerCik>
            <rptOwnerName>Berkshire Fund VIII, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001505184</rptOwnerCik>
            <rptOwnerName>Berkshire Investors III LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001505185</rptOwnerCik>
            <rptOwnerName>Berkshire Investors IV LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001888111</rptOwnerCik>
            <rptOwnerName>Eighth Berkshire Associates LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET, 35TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001597786</rptOwnerCik>
            <rptOwnerName>Berkshire Partners Holdings LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>35TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116-5021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001597787</rptOwnerCik>
            <rptOwnerName>BPSP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 CLARENDON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>35TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116-5021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A common stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13133967</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Berkshire Fund VIII-A, L.P.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>LLC Units of PHD Group Holdings LLC</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>31609401</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Berkshire Fund VIII, L.P.</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>LLC Units of PHD Group Holdings LLC</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>868687</value>
                    <footnoteId id="F5"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>LLC Units of PHD Group Holdings LLC</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2861078</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of Class A common stock of the Issuer held by Berkshire Fund VIII-A, L.P. (&quot;VIII-A&quot;), which may be deemed to be beneficially owned by Berkshire Partners Holdings LLC (&quot;BPH&quot;); BPSP, L.P. (&quot;BPSP&quot;); Eighth Berkshire Associates LLC (&quot;8BA&quot;), its general partner; and Berkshire Partners L.P. (&quot;BP&quot;), its investment adviser. BPH is the general partner of BPSP, which is the managing member of BP. As the managing member of BP, BPSP may be deemed to beneficially own shares of common stock that are beneficially owned by BP. As the general partner of BPSP, BPH may be deemed to beneficially own shares of common stock that are beneficially owned by BPSP. BPH VIII-A, 8BA and BP are under common control and may be deemed to be, but do not admit to being, a group for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the &quot;Act&quot;).</footnote>
        <footnote id="F2">(continued from footnote 1) Each of BPH, BPSP, VIII-A, 8BA and BP disclaims beneficial ownership of any securities except to the extent of its pecuniary interest therein.</footnote>
        <footnote id="F3">Pursuant to the Second Amended and Restated Limited Liability Company Agreement of PHD Group Holdings LLC (&quot;PHD Group Holdings&quot;), dated as of October 20, 2021, LLC Units (as defined therein) held by the Reporting Persons are exchangeable for shares of Class A common stock on a one-for-one basis, subject to certain exceptions, conditions and adjustments. The LLC Units have no expiration date. At the time of any such exchange, an equal number of shares of Class B common stock of the Issuer held by the Reporting Persons, which have no economic value and entitle holders thereof to one vote per share on all matters on which stockholders of the Issuer are entitled to vote generally, will be cancelled.</footnote>
        <footnote id="F4">Represents LLC Units of PHD Group Holdings held by Berkshire Fund VIII, L.P. (&quot;VIII&quot;), which may be deemed to be beneficially owned by BPH; BPSP; 8BA, its general partner; and BP, its investment adviser. BPH, BPSP, VIII, 8BA and BP are under common control and may be deemed to be, but do not admit to being, a group for purposes of Section 13(d)(3) of the Act. Each of BPH, BPSP, VIII, 8BA and Berkshire Partners disclaims beneficial ownership of any securities except to the extent of its pecuniary interest therein.</footnote>
        <footnote id="F5">Represents LLC Units of PHD Group Holdings held by Berkshire Investors III LLC (&quot;BI III&quot;). BI III may be deemed to be, but does not admit to being, a member of a group holding over 10% of the outstanding common stock of the Issuer for purposes of Section 13(d)(3) of the Act, and disclaims beneficial ownership of any securities except to the extent of its pecuniary interest therein.</footnote>
        <footnote id="F6">Represents LLC Units of PHD Group Holdings held by Berkshire Investors IV LLC (&quot;BI IV&quot;). BI IV may be deemed to be, but does not admit to being, a member of a group holding over 10% of the outstanding common stock of the Issuer for purposes of Section 13(d)(3) of the Act and disclaims beneficial ownership of any securities except to the extent of its pecuniary interest therein.</footnote>
    </footnotes>

    <remarks>Each of Joshua Lutzker and Richard Lubin will serve on the Board of Directors of the Issuer as a representative of the Reporting Persons, certain of which may be deemed a director by deputization solely for purposes of Section 16 of the Act.</remarks>

    <ownerSignature>
        <signatureName>By: See Signatures Included in Exhibit 99.1</signatureName>
        <signatureDate>2021-10-21</signatureDate>
    </ownerSignature>
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<PRE>
                                                                    Exhibit 99.1


                            Joint Filer Information


Name of Joint Filer:                         Berkshire Partners LLC

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021


Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Partners LLC


By: BPSP, L.P., its managing member
By: Berkshire Partners Holdings LLC, its general partner

/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date



                            Joint Filer Information


Name of Joint Filer:                         Berkshire Fund VIII-A, L.P.

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021



Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Fund VIII-A, L.P.

By Eighth Berkshire Associates LLC,
its general partner


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date



                            Joint Filer Information


Name of Joint Filer:                         Berkshire Fund VIII, L.P.

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021


Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Fund VIII, L.P.

By Eighth Berkshire Associates LLC,
its general partner


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date



                            Joint Filer Information


Name of Joint Filer:                         Berkshire Investors III LLC

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021


Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Investors III LLC


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date



                            Joint Filer Information


Name of Joint Filer:                         Berkshire Investors IV LLC

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021


Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Investors IV LLC


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date



                            Joint Filer Information


Name of Joint Filer:                         Eighth Berkshire Associates LLC

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021



Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Eighth Berkshire Associates LLC


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date




                            Joint Filer Information


Name of Joint Filer:                         Berkshire Partners Holdings LLC

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021



Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

Berkshire Partners Holdings LLC


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date




Joint Filer Information


Name of Joint Filer:                         BPSP, L.P.

Address of Joint Filer:                      200 Clarendon Street
                                             35th Floor
                                             Boston, MA 02116-5021



Issuer Name and Ticker or Trading Symbol:    Portillo's, Inc. [PTLO]

Date of Event Requiring this Statement
(Month/Day/Year):                            10/21/2021

Designated Filer:                            Berkshire Partners LLC


Signature:

BPSP, L.P.
By: Berkshire Partners Holdings LLC, its general partner


/s/ Sharlyn C. Heslam
--------------------------------
Name:  Sharlyn C. Heslam
Title: Managing Director

10/21/2021
----------
Date
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