<SEC-DOCUMENT>0001628280-25-053563.txt : 20251121
<SEC-HEADER>0001628280-25-053563.hdr.sgml : 20251121
<ACCEPTANCE-DATETIME>20251121154100
ACCESSION NUMBER:		0001628280-25-053563
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251121
DATE AS OF CHANGE:		20251121

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KAISER ALUMINUM CORP
		CENTRAL INDEX KEY:			0000811596
		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				943030279
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-09447
		FILM NUMBER:		251507669

	BUSINESS ADDRESS:	
		STREET 1:		1550 W. MCEWEN DRIVE, SUITE 500
		CITY:			FRANKLIN
		STATE:			TN
		ZIP:			37067
		BUSINESS PHONE:		6292527040

	MAIL ADDRESS:	
		STREET 1:		1550 W. MCEWEN DRIVE, SUITE 500
		CITY:			FRANKLIN
		STATE:			TN
		ZIP:			37067

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KAISERTECH LTD
		DATE OF NAME CHANGE:	19901122

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Harvey Keith
		CENTRAL INDEX KEY:			0001551869
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		27422 PORTOLA PARKWAY, SUITE 200
		CITY:			FOOTHILL RANCH
		STATE:			CA
		ZIP:			92610-2831
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <!-- Generated by Workiva -->
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001551869</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000811596</issuerCik>
      <issuerName>Kaiser Aluminum Corp</issuerName>
      <secFileNumber>001-09447</secFileNumber>
      <issuerAddress>
        <com:street1>1550 West McEwen Drive</com:street1>
        <com:street2>Suite 500</com:street2>
        <com:city>Franklin</com:city>
        <com:stateOrCountry>TN</com:stateOrCountry>
        <com:zipCode>37067</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>629-252-7162</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Keith Harvey</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>ceo</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Kaiser Aluminum</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill</name>
        <address>
          <com:street1>39001 w 12 Mile Rd</com:street1>
          <com:city>Farmington Hills</com:city>
          <com:stateOrCountry>MI</com:stateOrCountry>
          <com:zipCode>48331</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>32632</noOfUnitsSold>
      <aggregateMarketValue>2946625.29</aggregateMarketValue>
      <noOfUnitsOutstanding>31032</noOfUnitsOutstanding>
      <approxSaleDate>11/21/2025</approxSaleDate>
      <securitiesExchangeName>NASQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/05/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>25063</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/05/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan and Performance Shares</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>13698</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/05/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan and Performance Shares</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>14674</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/05/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>18909</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>07/29/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2588</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>07/27/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock from Comp Plan</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Harvey</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>18195</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/21/2025</noticeDate>
      <signature>Heather Hernesko</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
