<SEC-DOCUMENT>0001562180-25-006000.txt : 20250825
<SEC-HEADER>0001562180-25-006000.hdr.sgml : 20250825
<ACCEPTANCE-DATETIME>20250825170120
ACCESSION NUMBER:		0001562180-25-006000
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250825
FILED AS OF DATE:		20250825
DATE AS OF CHANGE:		20250825

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Malm Joshua
		CENTRAL INDEX KEY:			0002025901
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41279
		FILM NUMBER:		251251746

	MAIL ADDRESS:	
		STREET 1:		C/O 5E ADVANCED MATERIALS, INC.
		STREET 2:		9329 MARIPOSA ROAD, SUITE 210
		CITY:			HESPERIA
		STATE:			CA
		ZIP:			92344

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			5E Advanced Materials, Inc.
		CENTRAL INDEX KEY:			0001888654
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				873426517
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		9329 MARIPOSA ROAD
		STREET 2:		SUITE 210
		CITY:			HESPERIA
		STATE:			CA
		ZIP:			92344
		BUSINESS PHONE:		442 292 2120

	MAIL ADDRESS:	
		STREET 1:		9329 MARIPOSA ROAD
		STREET 2:		SUITE 210
		CITY:			HESPERIA
		STATE:			CA
		ZIP:			92344
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primarydocument.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-08-25</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0001888654</issuerCik>
        <issuerName>5E Advanced Materials, Inc.</issuerName>
        <issuerTradingSymbol>FEAM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002025901</rptOwnerCik>
            <rptOwnerName>Malm Joshua</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9329 MARIPOSA ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>HESPERIA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92344</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-08-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1425.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.50</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1425.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joshua Malm</signatureName>
        <signatureDate>2025-08-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
