<SEC-DOCUMENT>0001140361-16-077164.txt : 20160818
<SEC-HEADER>0001140361-16-077164.hdr.sgml : 20160818
<ACCEPTANCE-DATETIME>20160818163822
ACCESSION NUMBER:		0001140361-16-077164
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150831
FILED AS OF DATE:		20160818
DATE AS OF CHANGE:		20160818

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ryerson Holding Corp
		CENTRAL INDEX KEY:			0001481582
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-METALS SERVICE CENTERS & OFFICES [5051]
		IRS NUMBER:				261251524
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		227 W. MONROE ST., 27TH FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		312 292-5014

	MAIL ADDRESS:	
		STREET 1:		227 W. MONROE ST., 27TH FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schnaufer Erich S
		CENTRAL INDEX KEY:			0001490657

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34735
		FILM NUMBER:		161841292

	MAIL ADDRESS:	
		STREET 1:		C/O RYERSON HOLDING CORPORATION
		STREET 2:		227 W. MONROE ST., 27TH FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2015-08-31</periodOfReport>

    <dateOfOriginalSubmission>2015-09-01</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001481582</issuerCik>
        <issuerName>Ryerson Holding Corp</issuerName>
        <issuerTradingSymbol>RYI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001490657</rptOwnerCik>
            <rptOwnerName>Schnaufer Erich S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RYERSON HOLDING CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>227 W. MONROE ST., 27TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-08-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1500</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1980</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation.</footnote>
        <footnote id="F2">On August 17, 2015, the reporting person was granted 3,480 restricted stock units, of which 1,500 vested on August 31, 2015.  Of the remaining unvested restricted stock units, 660 vest on August 17, 2016, 660 vest on August 17, 2017 and 660 vest on August 17, 2018. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.</footnote>
        <footnote id="F3">The purpose of this amendment is to correct the number of shares reported under Column 7 of Table II.  The original Form 4, filed September 1, 2015, erroneously reported 3,480 shares under Column 7 of Table II.</footnote>
        <footnote id="F4">The restricted stock units reported as disposed herein were settled for shares of common stock of Ryerson Holding Corporation.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Mark S. Silver, attorney-in-fact</signatureName>
        <signatureDate>2016-08-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
