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        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001674332</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001666138</issuerCik>
            <issuerName>ATKORE INC.</issuerName>
            <secFileNumber>001-37793</secFileNumber>
            <issuerAddress>
                <ns2:street1>16100 South Lathrop Avenue</ns2:street1>
                <ns2:city>Harvey</ns2:city>
                <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                <ns2:zipCode>60426</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>708-339-1610</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>WILLIAM E WALTZ</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>43072</noOfUnitsSold>
            <aggregateMarketValue>6912048.12</aggregateMarketValue>
            <noOfUnitsOutstanding>36768282</noOfUnitsOutstanding>
            <approxSaleDate>02/26/2024</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/23/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of options under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5448</amountOfSecuritiesAcquired>
            <paymentDate>11/23/2020</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/17/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>3006</amountOfSecuritiesAcquired>
            <paymentDate>11/17/2022</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/16/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1530</amountOfSecuritiesAcquired>
            <paymentDate>11/16/2022</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/19/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of options under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5744</amountOfSecuritiesAcquired>
            <paymentDate>11/19/2020</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/21/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Performance Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>25167</amountOfSecuritiesAcquired>
            <paymentDate>11/21/2022</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/21/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2177</amountOfSecuritiesAcquired>
            <paymentDate>11/21/2022</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>William Waltz</name>
                <address>
                    <ns2:street1>16100 South Lathrop Avenue</ns2:street1>
                    <ns2:city>Harvey</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60426</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>12/14/2023</saleDate>
            <amountOfSecuritiesSold>79600</amountOfSecuritiesSold>
            <grossProceeds>11999337.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>02/26/2024</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ WILLIAM E WALTZ</signature>
        </noticeSignature>
    </formData>
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144
0001674332
XXXXXXXX
LIVE
0001666138
ATKORE INC.
001-37793
16100 South Lathrop Avenue
Harvey
IL
60426
708-339-1610
WILLIAM E WALTZ
Officer
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
43072
6912048.12
36768282
02/26/2024
NYSE
Common
11/23/2020
Exercise of options under a registered plan
Issuer
N
5448
11/23/2020
Services Rendered
Common
11/17/2022
Restricted stock vesting under a registered plan
Issuer
N
3006
11/17/2022
Services Rendered
Common
11/16/2022
Restricted stock vesting under a registered plan
Issuer
N
1530
11/16/2022
Services Rendered
Common
11/19/2020
Exercise of options under a registered plan
Issuer
N
5744
11/19/2020
Services Rendered
Common
11/21/2022
Performance Stock Units
Issuer
N
25167
11/21/2022
Services Rendered
Common
11/21/2022
Restricted stock vesting under a registered plan
Issuer
N
2177
11/21/2022
Services Rendered
N
William Waltz
16100 South Lathrop Avenue
Harvey
IL
60426
Common
12/14/2023
79600
11999337.00
02/26/2024
/s/ WILLIAM E WALTZ