<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.3.0.1 -->
<!--Based on XBRL 2.1-->
<!--Created on: 5/19/2026 12:57:07 PM-->
<!--Modified on: 5/19/2026 12:57:07 PM-->
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_CommonSharesMember" xlink:to="gbdc_CommonSharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_CommonSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_CommonSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_PreferredSharesMember" xlink:label="gbdc_PreferredSharesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_PreferredSharesMember" xlink:to="gbdc_PreferredSharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_PreferredSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for preferred stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_PreferredSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_SubscriptionRightsMember" xlink:label="gbdc_SubscriptionRightsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_SubscriptionRightsMember" xlink:to="gbdc_SubscriptionRightsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_SubscriptionRightsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Subscription rights.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_SubscriptionRightsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription Rights [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_WarrantsMember" xlink:label="gbdc_WarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_WarrantsMember" xlink:to="gbdc_WarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_WarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_WarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_DebtSecurityMember" xlink:label="gbdc_DebtSecurityMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_DebtSecurityMember" xlink:to="gbdc_DebtSecurityMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_DebtSecurityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for debt securities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_DebtSecurityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Security [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Instrument, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_Debt2024SecuritizationMember" xlink:label="gbdc_Debt2024SecuritizationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_Debt2024SecuritizationMember" xlink:to="gbdc_Debt2024SecuritizationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_Debt2024SecuritizationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2024 Debt Securitization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_Debt2024SecuritizationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt 2024 Securitization [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_JpmCreditFacilityMember" xlink:label="gbdc_JpmCreditFacilityMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_JpmCreditFacilityMember" xlink:to="gbdc_JpmCreditFacilityMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_JpmCreditFacilityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">JPM Credit Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_JpmCreditFacilityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">JPM Credit Facility [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_AdviserRevolverMember" xlink:label="gbdc_AdviserRevolverMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_AdviserRevolverMember" xlink:to="gbdc_AdviserRevolverMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_AdviserRevolverMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adviser Revolver</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_AdviserRevolverMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adviser Revolver [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_Notes2026Member" xlink:label="gbdc_Notes2026Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_Notes2026Member" xlink:to="gbdc_Notes2026Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_Notes2026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2026 Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_Notes2026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2026 [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_Notes2027Member" xlink:label="gbdc_Notes2027Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_Notes2027Member" xlink:to="gbdc_Notes2027Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_Notes2027Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2027 Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_Notes2027Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2027 [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_Notes2028Member" xlink:label="gbdc_Notes2028Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_Notes2028Member" xlink:to="gbdc_Notes2028Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_Notes2028Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2028 Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_Notes2028Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2028 [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_Notes2029Member" xlink:label="gbdc_Notes2029Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_Notes2029Member" xlink:to="gbdc_Notes2029Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_Notes2029Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Notes 2029.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_Notes2029Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes 2029 [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember" xlink:label="gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember" xlink:to="gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The Notes will be unsecured and therefore will be effectively subordinated to any secured indebtedness we have currently incurred or may incur in the future.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_NotesWillBeUnsecuredAndThereforeWillBeEffectivelySubordinatedToAnySecuredIndebtednessCurrentlyIncurredOrMayIncurInFutureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes Will be Unsecured and Therefore Will be Effectively Subordinated to Any Secured Indebtedness Currently Incurred or May Incur in Future [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember" xlink:label="gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember" xlink:to="gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The Notes will be structurally subordinated to the indebtedness and other liabilities of our subsidiaries.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_NotesWillBeStructurallySubordinatedToIndebtednessAndOtherLiabilitiesOfSubsidiariesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes Will be Structurally Subordinated to Indebtedness and Other Liabilities of Subsidiaries [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember" xlink:label="gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember" xlink:to="gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The indenture governing the Notes will contain limited protection for holders of the Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_IndentureGoverningNotesWillContainLimitedProtectionForHoldersOfNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Indenture Governing The Notes Will Contain Limited Protection For Holders Of The Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember" xlink:label="gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember" xlink:to="gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of debt outstanding may increase as a result of this offering. current indebtedness could adversely affect business, financial condition and results of operations and our ability to meet payment obligations under the Notes and other debt.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_DebtOutstandingIncreaseAffectPaymentObligationsUnderNotesAndOtherDebtMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Outstanding Increase Affect Payment Obligations Under the Notes and Other Debt [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_ActiveTradingMarketForNotesNotAbleToResellMember" xlink:label="gbdc_ActiveTradingMarketForNotesNotAbleToResellMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_ActiveTradingMarketForNotesNotAbleToResellMember" xlink:to="gbdc_ActiveTradingMarketForNotesNotAbleToResellMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_ActiveTradingMarketForNotesNotAbleToResellMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">An active trading market for the Notes does not develop, may not be able to resell them.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_ActiveTradingMarketForNotesNotAbleToResellMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Active Trading Market For The Notes Not Able To Resell [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember" xlink:label="gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember" xlink:to="gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Default on obligations to pay other indebtedness may not be able to make payments on the Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_DefaultOnObligationsToPayOtherIndebtednessMayNotBeAbleToMakePaymentsOnNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Default On Obligations To Pay Other Indebtedness May Not Be Able To Make Payments On The Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember" xlink:label="gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember" xlink:to="gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Any downgrade or withdrawal of the rating assigned by a rating agency to the Notes may cause their trading price to fall.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_DowngradeOrWithdrawalOfRatingAssignedByRatingAgencyToNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Downgrade or Withdrawal of Rating Assigned by a Rating Agency to the Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember" xlink:label="gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember" xlink:to="gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">An increase in market interest rates could result in a decrease in the market value of the Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_IncreaseInMarketInterestRatesResultsInMarketValueOfNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Market Interest Rates Results In The Market Value Of The Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember" xlink:label="gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember" xlink:to="gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Optional redemption provision may materially adversely affect your return on the Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_OptionalRedemptionProvisionAffectReturnOnNotesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Optional Redemption Provision Affect Return On The Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="gbdc-20260519.xsd#gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember" xlink:label="gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember" xlink:to="gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">May not be able to repurchase the Notes upon a Change of Control Repurchase Event.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="gbdc_MayNotBeAbleToRepurchaseNotesUponChangeOfControlRepurchaseEventMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">May Not be Able to Repurchase Notes upon a Change of Control Repurchase Event [Member]</label>
  </link:labelLink>
</link:linkbase>
