<SEC-DOCUMENT>0001628280-25-057727.txt : 20251217
<SEC-HEADER>0001628280-25-057727.hdr.sgml : 20251217
<ACCEPTANCE-DATETIME>20251217174226
ACCESSION NUMBER:		0001628280-25-057727
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251217
DATE AS OF CHANGE:		20251217

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Metallus Inc.
		CENTRAL INDEX KEY:			0001598428
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				464024951
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-36313
		FILM NUMBER:		251580430

	BUSINESS ADDRESS:	
		STREET 1:		1835 DUEBER AVENUE SW
		CITY:			CANTON
		STATE:			OH
		ZIP:			44706-0928
		BUSINESS PHONE:		330-471-7000

	MAIL ADDRESS:	
		STREET 1:		1835 DUEBER AVENUE SW
		CITY:			CANTON
		STATE:			OH
		ZIP:			44706-0928

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TimkenSteel Corp
		DATE OF NAME CHANGE:	20140128

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Williams Michael S
		CENTRAL INDEX KEY:			0001554176
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		1835 DUEBER AVE. SW
		CITY:			CANTON
		STATE:			OH
		ZIP:			44706
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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    <submissionType>144</submissionType>
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      <filer>
        <filerCredentials>
          <cik>0001554176</cik>
          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0001598428</issuerCik>
      <issuerName>Metallus Inc.</issuerName>
      <secFileNumber>001-36313</secFileNumber>
      <issuerAddress>
        <com:street1>1835 DUEBER AVENUE SW</com:street1>
        <com:city>CANTON</com:city>
        <com:stateOrCountry>OH</com:stateOrCountry>
        <com:zipCode>44706</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>330-471-7000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Michael Williams</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill Lynch</name>
        <address>
          <com:street1>8890 Lyra Drive 5th Floor</com:street1>
          <com:city>Columbus</com:city>
          <com:stateOrCountry>OH</com:stateOrCountry>
          <com:zipCode>43240</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>33334</noOfUnitsSold>
      <aggregateMarketValue>633346</aggregateMarketValue>
      <noOfUnitsOutstanding>42023268</noOfUnitsOutstanding>
      <approxSaleDate>12/17/2025</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/05/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vest</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>METALLUS INC.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>33334</amountOfSecuritiesAcquired>
      <paymentDate>01/05/2024</paymentDate>
      <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>12/17/2025</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>05/23/2025</planAdoptionDate>
      </planAdoptionDates>
      <signature>Michael Williams</signature>
    </noticeSignature>
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