Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Cash flows from operating activities:    
Net loss $ (21,718)us-gaap_NetIncomeLoss $ (4,687)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 458us-gaap_DepreciationDepletionAndAmortization 477us-gaap_DepreciationDepletionAndAmortization
Common stock contribution to 401(k) 986us-gaap_NoncashContributionExpense 870us-gaap_NoncashContributionExpense
Stock-based compensation expense 3,665us-gaap_ShareBasedCompensation 3,924us-gaap_ShareBasedCompensation
Accrued interest on interest bearing obligations 90us-gaap_DebtInstrumentIncreaseAccruedInterest (1,764)us-gaap_DebtInstrumentIncreaseAccruedInterest
Revaluation of contingent warrant liabilities 40xoma_UnrealizedGainLossOnWarrants (20,002)xoma_UnrealizedGainLossOnWarrants
Amortization of debt discount, final payment fee on debt, and debt issuance costs 296us-gaap_AmortizationOfFinancingCostsAndDiscounts 674us-gaap_AmortizationOfFinancingCostsAndDiscounts
Loss on loan extinguishment 429us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt
Unrealized gain on foreign currency exchange (1,949)us-gaap_ForeignCurrencyTransactionGainLossUnrealized (66)us-gaap_ForeignCurrencyTransactionGainLossUnrealized
Unrealized loss on foreign exchange options 5us-gaap_UnrealizedGainLossOnDerivatives 122us-gaap_UnrealizedGainLossOnDerivatives
Other non-cash adjustments 0us-gaap_OtherNoncashIncomeExpense 1us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities:    
Trade and other receivables, net 38us-gaap_IncreaseDecreaseInReceivables (530)us-gaap_IncreaseDecreaseInReceivables
Prepaid expenses and other assets (2)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (923)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable and accrued liabilities (6,455)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities (5,721)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Deferred revenue (163)us-gaap_IncreaseDecreaseInDeferredRevenue (524)us-gaap_IncreaseDecreaseInDeferredRevenue
Other liabilities 0us-gaap_IncreaseDecreaseInOtherOperatingLiabilities (51)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Net cash used in operating activities (24,280)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (28,200)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities:    
Net purchase of property and equipment (225)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (49)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Net cash used in investing activities (225)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (49)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities:    
Proceeds from issuance of common stock, net of issuance costs 134us-gaap_ProceedsFromIssuanceOfCommonStock 3,053us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from the exercise of warrants 0us-gaap_ProceedsFromWarrantExercises 35us-gaap_ProceedsFromWarrantExercises
Proceeds from issuance of long term debt 20,000us-gaap_ProceedsFromIssuanceOfLongTermDebt 0us-gaap_ProceedsFromIssuanceOfLongTermDebt
Debt issuance costs and loan fees (477)us-gaap_PaymentsOfFinancingCosts 0us-gaap_PaymentsOfFinancingCosts
Principal payments of debt (6,083)us-gaap_RepaymentsOfLongTermDebt (2,792)us-gaap_RepaymentsOfLongTermDebt
Net cash provided by financing activities 13,574us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations 296us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of exchange rate changes on cash (23)us-gaap_EffectOfExchangeRateOnCashContinuingOperations 0us-gaap_EffectOfExchangeRateOnCashContinuingOperations
Net decrease in cash and cash equivalents (10,954)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (27,953)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at the beginning of the period 78,445us-gaap_CashAndCashEquivalentsAtCarryingValue [1] 101,659us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at the end of the period 67,491us-gaap_CashAndCashEquivalentsAtCarryingValue 73,706us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash paid for:    
Interest 333us-gaap_InterestPaid 2,194us-gaap_InterestPaid
Non-cash financing activities:    
Reclassification of contingent warrant liability to equity upon exercise of warrants 0xoma_ReclassificationOfContingentWarrantLiabilityToEquityExerciseOfWarrants (2,525)xoma_ReclassificationOfContingentWarrantLiabilityToEquityExerciseOfWarrants
Issuance of warrants $ 450us-gaap_ProceedsFromIssuanceOfWarrants $ 0us-gaap_ProceedsFromIssuanceOfWarrants
[1] The condensed consolidated balance sheet as of December 31, 2014 has been derived from the audited consolidated financial statements as of that date included in the Company 's Annual Report on Form 10-K for the year ended December 31, 2014.