<SEC-DOCUMENT>0000935836-25-000733.txt : 20251222
<SEC-HEADER>0000935836-25-000733.hdr.sgml : 20251222
<ACCEPTANCE-DATETIME>20251222175437
ACCESSION NUMBER:		0000935836-25-000733
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251219
FILED AS OF DATE:		20251222
DATE AS OF CHANGE:		20251222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Man Christine
		CENTRAL INDEX KEY:			0001950121
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34018
		FILM NUMBER:		251593672

	MAIL ADDRESS:	
		STREET 1:		915 1055 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 2E9

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LM Asset (IM) Inc.
		CENTRAL INDEX KEY:			0002057190
		ORGANIZATION NAME:           	
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34018
		FILM NUMBER:		251593674

	BUSINESS ADDRESS:	
		STREET 1:		915 1055 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 2E9
		BUSINESS PHONE:		778-688-3813

	MAIL ADDRESS:	
		STREET 1:		915 1055 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 2E9

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lau Daniel
		CENTRAL INDEX KEY:			0001950123
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34018
		FILM NUMBER:		251593673

	MAIL ADDRESS:	
		STREET 1:		915 1055 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 2E9

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GRAN TIERRA ENERGY INC.
		CENTRAL INDEX KEY:			0001273441
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		500 CENTRE STREET SE
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2G 1A6
		BUSINESS PHONE:		(403) 265-3221

	MAIL ADDRESS:	
		STREET 1:		500 CENTRE STREET SE
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2G 1A6

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GRAN TIERRA ENERGY, INC.
		DATE OF NAME CHANGE:	20051130

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GOLDSTRIKE INC
		DATE OF NAME CHANGE:	20040113

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GOLKSTRIKE INC
		DATE OF NAME CHANGE:	20031216
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001273441</issuerCik>
        <issuerName>GRAN TIERRA ENERGY INC.</issuerName>
        <issuerTradingSymbol>GTE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002057190</rptOwnerCik>
            <rptOwnerName>LM Asset (IM) Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>915 1055 WEST HASTINGS STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V6E 2E9</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001950123</rptOwnerCik>
            <rptOwnerName>Lau Daniel</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>915 1055 WEST HASTINGS STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V6E 2E9</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001950121</rptOwnerCik>
            <rptOwnerName>Man Christine</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>915 1055 WEST HASTINGS STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V6E 2E9</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>140000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.8733</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3671200</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>240000</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>65550</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>145000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.83 to $3.91, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F2">These securities are held by private investment funds managed by LM Asset (IM) Inc. (&quot;LMAIM&quot;). LMAIM may be deemed to beneficially own these securities as the investment adviser to those funds. Daniel Lau and Christine Man are control persons of LMAIM and may be deemed to beneficially own these securities as control persons of LMAIM. Each reporting person disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interests therein.</footnote>
        <footnote id="F3">These securities are beneficially owned solely by Daniel Lau.</footnote>
        <footnote id="F4">These securities are beneficially owned solely by Christine Man.</footnote>
        <footnote id="F5">These securities are held by companies of which Daniel Lau and Christine Man are directors and controlling shareholders. They may be deemed to beneficially own these shares because they are control persons of those companies. They disclaim beneficial ownership of such securities except to the extent of their respective pecuniary interests therein.</footnote>
    </footnotes>

    <remarks>The reporting persons are filing this Form 4 jointly but not as a group, and each reporting person expressly disclaims membership in a group within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934.</remarks>

    <ownerSignature>
        <signatureName>/s/ Daniel Lau, director of LM Asset (IM), Inc.</signatureName>
        <signatureDate>2025-12-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Daniel Lau</signatureName>
        <signatureDate>2025-12-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Christine Man</signatureName>
        <signatureDate>2025-12-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
