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  <xs:element id="forge_ClassAACommonStockMember" abstract="true" name="ClassAACommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_WarrantsIssuedInConnectionWithFPA" abstract="false" name="WarrantsIssuedInConnectionWithFPA" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ClassOfWarrantOrRightNumberOfCommonSecuritiesCalledByWarrantsOrRights" abstract="false" name="ClassOfWarrantOrRightNumberOfCommonSecuritiesCalledByWarrantsOrRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_PlacementFeesMember" abstract="true" name="PlacementFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_TemporaryEquityIssuanceOfStockUponConversionValue" abstract="false" name="TemporaryEquityIssuanceOfStockUponConversionValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ClassEE1CommonStockMember" abstract="true" name="ClassEE1CommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_A2020LoanAndSecurityAgreementMember" abstract="true" name="A2020LoanAndSecurityAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_CapitalizationAbstract" abstract="true" name="CapitalizationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="forge_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_CustodialAdministrationFeesMember" abstract="true" name="CustodialAdministrationFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_MotiveCapitalCorpMember" abstract="true" name="MotiveCapitalCorpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_CommonStockConversionRatioIntoAnotherClassOfCommonStock" abstract="false" name="CommonStockConversionRatioIntoAnotherClassOfCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="forge_PaymentDependentNotesPayableNoncurrentFairValueDisclosure" abstract="false" name="PaymentDependentNotesPayableNoncurrentFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_MeasurementInputFairValueOfStockMember" abstract="true" name="MeasurementInputFairValueOfStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_EarlyExerciseOfCommonStockOptionsUponSettlementOfRelatedPartyPromissoryNotes" abstract="false" name="EarlyExerciseOfCommonStockOptionsUponSettlementOfRelatedPartyPromissoryNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_AccountingPoliciesLineItems" abstract="true" name="AccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="forge_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingThresholdSharePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingThresholdSharePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="forge_PublicAndPrivateWarrantsMember" abstract="true" name="PublicAndPrivateWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_NumberOfMembersOfBoardOfDirectorsWhoAreEntitledToBeElectedByHoldersOfCommonStock" abstract="false" name="NumberOfMembersOfBoardOfDirectorsWhoAreEntitledToBeElectedByHoldersOfCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="forge_AccountingPoliciesTable" abstract="true" name="AccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="forge_ClassAMember" abstract="true" name="ClassAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_LesseeOperatingLeaseLiabilityPaymentsNetSubleaseIncomeFiscalYearMaturityAbstract" abstract="true" name="LesseeOperatingLeaseLiabilityPaymentsNetSubleaseIncomeFiscalYearMaturityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="forge_TransactionBonusPaidInCash" abstract="false" name="TransactionBonusPaidInCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_SaleOfUnitsPricePerUnit" abstract="false" name="SaleOfUnitsPricePerUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="forge_PaymentDependentNotesPayableCurrentFairValueDisclosure" abstract="false" name="PaymentDependentNotesPayableCurrentFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_NumberOfStockClasses" abstract="false" name="NumberOfStockClasses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="forge_StockIssuedDuringPeriodSharesVestedStockOptionedExercised" abstract="false" name="StockIssuedDuringPeriodSharesVestedStockOptionedExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_SharesAuthorized" abstract="false" name="SharesAuthorized" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_ProceedsFromReverseRecapitalizationTransaction" abstract="false" name="ProceedsFromReverseRecapitalizationTransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_RecapitalizationOfCommonStock" abstract="false" name="RecapitalizationOfCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsTrailingTradingDays" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsTrailingTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="forge_A2022ESPPMember" abstract="true" name="A2022ESPPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_PrivatePlacementWarrantMember" abstract="true" name="PrivatePlacementWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_WarrantContractualTerm" abstract="false" name="WarrantContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="forge_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsExtendedValueCap" abstract="false" name="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsExtendedValueCap" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_AuditFeesMember" abstract="true" name="AuditFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_SeriesBConvertiblePreferredStockMember" abstract="true" name="SeriesBConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_CapitalizationTextBlock" abstract="false" name="CapitalizationTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="forge_CommonStockCapitalSharesReservedForFutureIssuanceAutomaticIncreasePeriod" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceAutomaticIncreasePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="forge_MeasurementInputValueOfWarrantMember" abstract="true" name="MeasurementInputValueOfWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_PaymentDependentNotesReceivableCurrentFairValueDisclosure" abstract="false" name="PaymentDependentNotesReceivableCurrentFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_StockIssuedDuringPeriodValueVestedStockOptionedExercised" abstract="false" name="StockIssuedDuringPeriodValueVestedStockOptionedExercised" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingThresholdSaleOfStockProceeds" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingThresholdSaleOfStockProceeds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ClassEE2CommonStockMember" abstract="true" name="ClassEE2CommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_JamesHerbertIIMember" abstract="true" name="JamesHerbertIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_TemporaryEquityValueConversionOfConvertibleSecurites" abstract="false" name="TemporaryEquityValueConversionOfConvertibleSecurites" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedStockExpirationPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedStockExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="forge_ReverseRecapitalizationDisclosureTextBlock" abstract="false" name="ReverseRecapitalizationDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="forge_SaleOfUnitsDomain" abstract="true" name="SaleOfUnitsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_AccruedPaymentsRelatedToAcquisitionsAndFinancingCurrent" abstract="false" name="AccruedPaymentsRelatedToAcquisitionsAndFinancingCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ConversionRatio" abstract="false" name="ConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_MaximumNumberOfSharesThatMayBeConverted" abstract="false" name="MaximumNumberOfSharesThatMayBeConverted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeRemainderOfFiscalYear" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_OneTimeTransactionBonusAmount" abstract="false" name="OneTimeTransactionBonusAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_RentAndOccupancy" abstract="false" name="RentAndOccupancy" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_FinancialFeesMember" abstract="true" name="FinancialFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_October2020WarrantsMember" abstract="true" name="October2020WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_SaleOfUnitsNumberOfWarrantsInEachUnit" abstract="false" name="SaleOfUnitsNumberOfWarrantsInEachUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="forge_PrivatePlacementProceedsReceivable" abstract="false" name="PrivatePlacementProceedsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_SaleOfUnitsNumberOfSharesInEachUnit" abstract="false" name="SaleOfUnitsNumberOfSharesInEachUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_TemporaryEquityIssuanceOfStockUponConversionShares" abstract="false" name="TemporaryEquityIssuanceOfStockUponConversionShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_SeriesB2ConvertiblePreferredStockMember" abstract="true" name="SeriesB2ConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_SeriesAAConvertiblePreferredStockMember" abstract="true" name="SeriesAAConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_AccruedTaxesAndDeferredTaxLiabilitiesCurrent" abstract="false" name="AccruedTaxesAndDeferredTaxLiabilitiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_InsurancePremiumsMember" abstract="true" name="InsurancePremiumsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_TemporaryEquitySharesConversionOfConvertibleSecurities" abstract="false" name="TemporaryEquitySharesConversionOfConvertibleSecurities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_SaleOfUnitsAxis" abstract="true" name="SaleOfUnitsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="forge_PropertyAndEquipmentExpendituresIncurredButNotYetPaid" abstract="false" name="PropertyAndEquipmentExpendituresIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_JuniorConvertiblePreferredStockMember" abstract="true" name="JuniorConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_PaymentsOfWarrantIssuanceCosts" abstract="false" name="PaymentsOfWarrantIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_ClassOfWarrantOrRightTradingPriceOfWarrants" abstract="false" name="ClassOfWarrantOrRightTradingPriceOfWarrants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="forge_FinancialTechnologyPartnersMember" abstract="true" name="FinancialTechnologyPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_PerformanceAndMarketConditionBasedOptionMember" abstract="true" name="PerformanceAndMarketConditionBasedOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_StockIssuedDuringPeriodSharesUnvestedStockOptionsExercised" abstract="false" name="StockIssuedDuringPeriodSharesUnvestedStockOptionsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_JuniorPreferredWarrantMember" abstract="true" name="JuniorPreferredWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_ClassOfWarrantOrRightNumberOfConvertiblePreferredSecuritiesCalledByWarrantsOrRights" abstract="false" name="ClassOfWarrantOrRightNumberOfConvertiblePreferredSecuritiesCalledByWarrantsOrRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="forge_VestingOfEarlyExercisedStockOptionsAndRSAs" abstract="false" name="VestingOfEarlyExercisedStockOptionsAndRSAs" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="forge_IssuanceOfPublicAndPrivateWarrantsMember" abstract="true" name="IssuanceOfPublicAndPrivateWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="forge_RecapitalizationTable" abstract="true" name="RecapitalizationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="forge_ScheduleOfCommonStockReservedForFutureIssuanceTableTextBlock" abstract="false" name="ScheduleOfCommonStockReservedForFutureIssuanceTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
</xs:schema>
