<SEC-DOCUMENT>0001058873-25-000005.txt : 20250327
<SEC-HEADER>0001058873-25-000005.hdr.sgml : 20250327
<ACCEPTANCE-DATETIME>20250327171643
ACCESSION NUMBER:		0001058873-25-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250326
FILED AS OF DATE:		20250327
DATE AS OF CHANGE:		20250327

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HERALD CHRISTOPHER E
		CENTRAL INDEX KEY:			0001058874
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32978
		FILM NUMBER:		25780540

	MAIL ADDRESS:	
		STREET 1:		4251 KIPLING STREET
		STREET 2:		SUITE 390
		CITY:			WHEAT RIDGE
		STATE:			CO
		ZIP:			80033

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOLITARIO RESOURCES CORP.
		CENTRAL INDEX KEY:			0000917225
		STANDARD INDUSTRIAL CLASSIFICATION:	GOLD & SILVER ORES [1040]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				841285791
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4251 KIPLING STREET
		STREET 2:		SUITE 390
		CITY:			WHEAT RIDGE
		STATE:			CO
		ZIP:			80033
		BUSINESS PHONE:		3035341030

	MAIL ADDRESS:	
		STREET 1:		4251 KIPLING STREET
		STREET 2:		SUITE 390
		CITY:			WHEAT RIDGE
		STATE:			CO
		ZIP:			80033

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOLITARIO ZINC CORP.
		DATE OF NAME CHANGE:	20170717

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOLITARIO EXPLORATION & ROYALTY CORP.
		DATE OF NAME CHANGE:	20080616

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOLITARIO RESOURCES CORP
		DATE OF NAME CHANGE:	20000711
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-03-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000917225</issuerCik>
        <issuerName>SOLITARIO RESOURCES CORP.</issuerName>
        <issuerTradingSymbol>xpl</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001058874</rptOwnerCik>
            <rptOwnerName>HERALD CHRISTOPHER E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4251 KIPLING STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 390</rptOwnerStreet2>
            <rptOwnerCity>WHEAT RIDGE</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80033</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>commmon</value>
            </securityTitle>
            <transactionDate>
                <value>2025-03-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>225000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.2</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2292000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.2</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-03-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>225000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.2</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2020-04-02</value>
            </exerciseDate>
            <expirationDate>
                <value>2025-04-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>225000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>860000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>Christopher E Herald</signatureName>
        <signatureDate>2025-03-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
