$SPRO
Spero Therapeutics Inc

2020 Form 10-K Financial Statement

#000156459021012514 Filed on March 11, 2021

View on sec.gov

Income Statement

Concept 2020 2019 Q4 2019
Revenue $9.330M $696.0K $18.15M
YoY Change -48.59% -58.87% 357.56%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $21.44M $3.790M $15.59M
YoY Change 37.52% 3.84% 20.95%
% of Gross Profit
Research & Development $67.00M $25.73M $65.78M
YoY Change 1.87% 181.82% 94.11%
% of Gross Profit
Depreciation & Amortization $800.0K -$110.0K $800.0K
YoY Change 0.0% -178.57% 95.6%
% of Gross Profit
Operating Expenses $88.44M $29.51M $81.36M
YoY Change 8.7% 131.0% 73.96%
Operating Profit -$79.11M -$63.22M
YoY Change 25.15% 47.68%
Interest Expense $400.0K $1.550M $1.550M
YoY Change -74.19%
% of Operating Profit
Other Income/Expense, Net $833.0K -$650.0K $2.291M
YoY Change -63.64% -232.65% 100.26%
Pretax Income -$78.28M -$24.99M -$62.62M
YoY Change 25.0% 135.75% 88.42%
Income Tax $0.00 $0.00
% Of Pretax Income
Net Earnings -$78.30M -$24.99M -$60.90M
YoY Change 28.57% 135.74% 46.04%
Net Earnings / Revenue -839.23% -3589.94% -335.59%
Basic Earnings Per Share
Diluted Earnings Per Share -$3.496M -$1.311M -$3.355M
COMMON SHARES
Basic Shares Outstanding 19.13M
Diluted Shares Outstanding

Balance Sheet

Concept 2020 2019 Q4 2019
SHORT-TERM ASSETS
Cash & Short-Term Investments $126.9M $82.00M $82.00M
YoY Change 54.76% -28.94% -28.94%
Cash & Equivalents $85.20M $29.73M $29.70M
Short-Term Investments $41.70M $52.30M $52.30M
Other Short-Term Assets $6.100M $4.800M $4.800M
YoY Change 27.08% -36.0% -36.0%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets $139.1M $95.41M $95.40M
YoY Change 45.81% -23.19% -23.19%
LONG-TERM ASSETS
Property, Plant & Equipment $8.800M $2.273M $7.100M
YoY Change 23.94% -21.43% 144.83%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $5.200M $3.520M $3.500M
YoY Change 48.57% 111.92% 105.88%
Total Long-Term Assets $14.40M $10.69M $10.70M
YoY Change 34.58% 123.29% 122.92%
TOTAL ASSETS
Total Short-Term Assets $139.1M $95.41M $95.40M
Total Long-Term Assets $14.40M $10.69M $10.70M
Total Assets $153.5M $106.1M $106.1M
YoY Change 44.67% -17.75% -17.75%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $1.200M $4.147M $4.100M
YoY Change -70.73% 15.1% 13.89%
Accrued Expenses $13.20M $22.50M $22.50M
YoY Change -41.33% 171.08% 171.08%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $14.30M $26.66M $26.70M
YoY Change -46.44% 116.46% 117.07%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00 $0.00
YoY Change
Other Long-Term Liabilities $7.100M $4.900M $4.900M
YoY Change 44.9% 512.5% 512.5%
Total Long-Term Liabilities $7.100M $4.900M $4.900M
YoY Change 44.9% 512.5% 512.5%
TOTAL LIABILITIES
Total Short-Term Liabilities $14.30M $26.66M $26.70M
Total Long-Term Liabilities $7.100M $4.900M $4.900M
Total Liabilities $21.40M $31.53M $31.50M
YoY Change -32.06% 139.75% 133.33%
SHAREHOLDERS EQUITY
Retained Earnings -$199.4M
YoY Change 43.99%
Common Stock $274.0M
YoY Change 7.86%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $132.0M $74.57M $74.60M
YoY Change
Total Liabilities & Shareholders Equity $153.5M $106.1M $106.1M
YoY Change 44.67% -17.75% -17.75%

Cashflow Statement

Concept 2020 2019 Q4 2019
OPERATING ACTIVITIES
Net Income -$78.30M -$24.99M -$60.90M
YoY Change 28.57% 135.74% 46.04%
Depreciation, Depletion And Amortization $800.0K -$110.0K $800.0K
YoY Change 0.0% -178.57% 95.6%
Cash From Operating Activities -$85.87M -$17.37M -$50.02M
YoY Change 71.68% 28.57% 26.23%
INVESTING ACTIVITIES
Capital Expenditures $157.0K -$120.0K $314.0K
YoY Change -50.0% -95.04% -87.11%
Acquisitions
YoY Change
Other Investing Activities $10.63M -$3.970M $29.84M
YoY Change -64.38% -140.93% -136.97%
Cash From Investing Activities $10.47M -$4.100M $29.53M
YoY Change -64.54% -156.32% -135.51%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net $13.17M $15.79M
YoY Change -16.62%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 130.9M 5.600M 16.14M
YoY Change 710.91% -3211.11% -76.78%
NET CHANGE
Cash From Operating Activities -85.87M -17.37M -50.02M
Cash From Investing Activities 10.47M -4.100M 29.53M
Cash From Financing Activities 130.9M 5.600M 16.14M
Net Change In Cash 55.48M -15.87M -4.350M
YoY Change -1375.38% 147.58% -91.83%
FREE CASH FLOW
Cash From Operating Activities -$85.87M -$17.37M -$50.02M
Capital Expenditures $157.0K -$120.0K $314.0K
Free Cash Flow -$86.03M -$17.25M -$50.33M
YoY Change 70.92% 55.55% 19.67%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2020 spro Ownership Change Increase In Ownership Percentage Term
OwnershipChangeIncreaseInOwnershipPercentageTerm
P3Y
CY2020Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2019Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2020Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P6Y7M6D
CY2019Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P7Y
CY2020Q4 us-gaap Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List
FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
us-gaap:PropertyPlantAndEquipmentMember
CY2019Q4 us-gaap Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List
FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
us-gaap:PropertyPlantAndEquipmentMember
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y2M12D
CY2019 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y3M18D
CY2019 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P7Y11M8D
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P7Y10M2D
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
P7Y10M2D
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1
P6Y11M4D
CY2020 us-gaap Operating Expenses
OperatingExpenses
88443000
CY2019 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-2654000
CY2020 spro Increase Decrease In Tax Incentives Receivable
IncreaseDecreaseInTaxIncentivesReceivable
254000
CY2019 spro Increase Decrease In Tax Incentives Receivable
IncreaseDecreaseInTaxIncentivesReceivable
-299000
CY2020 dei Icfr Auditor Attestation Flag
IcfrAuditorAttestationFlag
false
CY2019Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
29730000
CY2019Q4 us-gaap Marketable Securities Current
MarketableSecuritiesCurrent
52315000
CY2019Q4 us-gaap Other Receivables
OtherReceivables
7760000
CY2019Q4 spro Tax Incentive Receivable Current
TaxIncentiveReceivableCurrent
786000
CY2019Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
4823000
CY2019Q4 us-gaap Assets Current
AssetsCurrent
95414000
CY2019Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
2273000
CY2019Q4 spro Tax Incentive Receivable Noncurrent
TaxIncentiveReceivableNoncurrent
21000
CY2020Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
7114000
CY2019Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
4875000
CY2020Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
5212000
CY2019Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
3520000
CY2020Q4 us-gaap Assets
Assets
153451000
CY2019Q4 spro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
21588000
CY2019Q4 us-gaap Assets
Assets
106103000
CY2020Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
1155000
CY2019Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
4147000
CY2020Q4 spro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
12241000
CY2019Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
928000
CY2019Q4 us-gaap Liabilities Current
LiabilitiesCurrent
26663000
CY2019Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
4617000
CY2020Q4 us-gaap Other Long Term Debt Noncurrent
OtherLongTermDebtNoncurrent
177000
CY2019Q4 us-gaap Other Long Term Debt Noncurrent
OtherLongTermDebtNoncurrent
249000
CY2020Q4 us-gaap Liabilities
Liabilities
21411000
CY2019Q4 us-gaap Liabilities
Liabilities
31529000
CY2020Q4 us-gaap Preferred Stock Value
PreferredStockValue
3000
CY2019Q4 us-gaap Common Stock Value
CommonStockValue
19000
CY2019Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
273966000
CY2019Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-199427000
CY2019Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
16000
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
74574000
CY2020 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
67003000
CY2020 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
21440000
CY2020 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
432000
CY2020 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
1890000
CY2019 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
2912000
CY2020 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
-2975000
CY2019 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
564000
CY2020 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
-9130000
CY2019 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
13272000
CY2020 us-gaap Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
-72000
CY2019 us-gaap Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
-52000
CY2020 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
833000
CY2020 us-gaap Profit Loss
ProfitLoss
-78280000
CY2020 us-gaap Operating Income Loss
OperatingIncomeLoss
-79113000
CY2019 us-gaap Gain Loss On Sale Of Derivatives
GainLossOnSaleOfDerivatives
223000
CY2020 us-gaap Investment Income Interest
InvestmentIncomeInterest
401000
CY2020 us-gaap Profit Loss
ProfitLoss
-78280000
CY2019 us-gaap Profit Loss
ProfitLoss
-60925000
CY2019 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
38000
CY2019 us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
-6000
CY2019 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
44000
CY2018Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
115855000
CY2019 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
508000
CY2019 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
15316000
CY2019 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
3776000
CY2019 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
44000
CY2019Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
74574000
CY2020 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
2189000
CY2020 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
77929000
CY2020 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
4888000
CY2020 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
-23000
CY2020 us-gaap Profit Loss
ProfitLoss
-78280000
CY2020Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
132040000
CY2020 us-gaap Profit Loss
ProfitLoss
-78280000
CY2020 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
761000
CY2019 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
750000
CY2020 spro Non Cash Lease Cost
NonCashLeaseCost
585000
CY2019 spro Non Cash Lease Cost
NonCashLeaseCost
408000
CY2019 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
-184000
CY2019 us-gaap Gain Loss On Sale Of Derivatives
GainLossOnSaleOfDerivatives
223000
CY2020 us-gaap Share Based Compensation
ShareBasedCompensation
4888000
CY2019 us-gaap Share Based Compensation
ShareBasedCompensation
3776000
CY2019 us-gaap Realized Investment Gains Losses
RealizedInvestmentGainsLosses
1000
CY2020 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
330000
CY2019 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
18000
CY2020 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
32000
CY2019 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
750000
CY2020 us-gaap Increase Decrease In Other Receivables
IncreaseDecreaseInOtherReceivables
-2430000
CY2019 us-gaap Increase Decrease In Other Receivables
IncreaseDecreaseInOtherReceivables
7384000
CY2020 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
1240000
CY2020 spro Increase Decrease In Operating Lease Liabilities
IncreaseDecreaseInOperatingLeaseLiabilities
-333000
CY2019 spro Increase Decrease In Operating Lease Liabilities
IncreaseDecreaseInOperatingLeaseLiabilities
338000
CY2020 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-85872000
CY2019 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-50020000
CY2020 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
45723000
CY2019 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
88993000
CY2020 us-gaap Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
56350000
CY2019 us-gaap Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
118837000
CY2020 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
157000
CY2019 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
314000
CY2020 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
10470000
CY2019 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
29530000
CY2020 us-gaap Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
13166000
CY2019 us-gaap Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
15790000
CY2020 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
953000
CY2019 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
158000
CY2020 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
2189000
CY2019 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
508000
CY2020 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
130881000
CY2019 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
16140000
CY2020 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
55479000
CY2019 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-4350000
CY2019Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
29730000
CY2018Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
34080000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
85209000
CY2019Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
29730000
CY2020 spro Right Of Use Assets And Lease Obligations Recorded Upon Commencement Or Amendment Of Lease Agreements
RightOfUseAssetsAndLeaseObligationsRecordedUponCommencementOrAmendmentOfLeaseAgreements
2626000
CY2019 spro Right Of Use Assets And Lease Obligations Recorded Upon Commencement Or Amendment Of Lease Agreements
RightOfUseAssetsAndLeaseObligationsRecordedUponCommencementOrAmendmentOfLeaseAgreements
1038000
CY2020 spro Entity Incorporation Month And Year
EntityIncorporationMonthAndYear
2013-12
CY2020 dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
DE
CY2020 us-gaap Business Acquisition Date Of Acquisition Agreement1
BusinessAcquisitionDateOfAcquisitionAgreement1
2017-06-30
CY2020 us-gaap Net Income Loss
NetIncomeLoss
-78300000
CY2019 us-gaap Net Income Loss
NetIncomeLoss
-60900000
CY2020Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-277700000
CY2020 us-gaap Use Of Estimates
UseOfEstimates
<p style="margin-bottom:0pt;margin-top:10pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of Estimates </p> <p style="margin-bottom:0pt;margin-top:10pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting periods. Significant estimates and assumptions reflected in these consolidated financial statements include, but are not limited to, revenue recognition, the accrual for clinical trial costs and other research and development expenses, and the valuation of share-based awards. The full extent to which the COVID-19 pandemic will directly or indirectly impact our business, results of operations and financial condition, including expenses, manufacturing, clinical trials, research and development costs and employee-related amounts, will depend on future developments that are highly uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain it or treat COVID-19, as well as the economic impact on local, regional, national and international customers and markets. The Company has contemplated the impact of COVID-19 within its financial statements and is not aware of any specific event or circumstance that would require the Company to update estimates, judgments or revise the carrying value of any assets or liabilities. There may be changes to those estimates in future periods. On an ongoing basis, management evaluates its estimates, as there are changes in circumstances, facts and experience. Actual results may differ from those estimates or assumptions.  </p>
CY2020 us-gaap Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Concentrations of Credit Risk and of Significant Suppliers </p> <p style="margin-bottom:0pt;margin-top:10pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents. The Company maintains most of its cash and cash equivalents at one accredited financial institution. The Company does not believe that it is subject to unusual credit risk beyond the normal credit risk associated with commercial banking relationships. </p> <p style="margin-bottom:0pt;margin-top:10pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company is dependent on third-party manufacturers to supply products for research and development activities in its programs. In particular, the Company relies and expects to continue to rely on a small number of manufacturers to supply it with its requirements for the active pharmaceutical ingredients and formulated drugs related to these programs. These programs could be adversely affected by a significant interruption in the supply of active pharmaceutical ingredients and formulated drugs. As of December 31, 2020, and 2019, the Company had no off-balance sheet risk such as foreign exchange contracts, option contracts, or other hedging arrangements.</p>
CY2020 us-gaap Concentration Risk Credit Risk Financial Instruments Off Balance Sheet Risk
ConcentrationRiskCreditRiskFinancialInstrumentsOffBalanceSheetRisk
As of December 31, 2020, and 2019, the Company had no off-balance sheet risk such as foreign exchange contracts, option contracts, or other hedging arrangements.
CY2020Q4 us-gaap Fair Value Disclosure Offbalance Sheet Risks Amount Asset
FairValueDisclosureOffbalanceSheetRisksAmountAsset
0
CY2019Q4 us-gaap Fair Value Disclosure Offbalance Sheet Risks Amount Asset
FairValueDisclosureOffbalanceSheetRisksAmountAsset
0
CY2020 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
0
CY2019 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
0
CY2020 spro Cares Act Eliminated Percentage On Limitation Of Taxable Income
CARESActEliminatedPercentageOnLimitationOfTaxableIncome
0.80
CY2020 spro Cares Act Percentage Of Adjusted Taxable Income Plus Business Interest Income
CARESActPercentageOfAdjustedTaxableIncomePlusBusinessInterestIncome
0.50
CY2020 spro Cares Act Percentage Of Limitation On Adjusted Taxable Income Plus Business Interest Income Under Tax Cut And Jobs Act2017
CARESActPercentageOfLimitationOnAdjustedTaxableIncomePlusBusinessInterestIncomeUnderTaxCutAndJobsAct2017
0.30
CY2020Q4 us-gaap Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
2700000
CY2019Q4 us-gaap Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
3000000.0
CY2020Q4 us-gaap Fair Value Assets Level1 To Level2 Transfers Amount
FairValueAssetsLevel1ToLevel2TransfersAmount
0
CY2019Q4 us-gaap Fair Value Assets Level1 To Level2 Transfers Amount
FairValueAssetsLevel1ToLevel2TransfersAmount
0
CY2019Q4 us-gaap Fair Value Liabilities Level2 To Level1 Transfers Amount
FairValueLiabilitiesLevel2ToLevel1TransfersAmount
0
CY2020 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet
0
CY2019 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet
0
CY2020Q4 us-gaap Fair Value Assets Level2 To Level1 Transfers Amount
FairValueAssetsLevel2ToLevel1TransfersAmount
0
CY2019Q4 us-gaap Fair Value Assets Level2 To Level1 Transfers Amount
FairValueAssetsLevel2ToLevel1TransfersAmount
0
CY2020Q4 us-gaap Fair Value Liabilities Level1 To Level2 Transfers Amount
FairValueLiabilitiesLevel1ToLevel2TransfersAmount
0
CY2019Q4 us-gaap Fair Value Liabilities Level1 To Level2 Transfers Amount
FairValueLiabilitiesLevel1ToLevel2TransfersAmount
0
CY2020Q4 us-gaap Fair Value Liabilities Level2 To Level1 Transfers Amount
FairValueLiabilitiesLevel2ToLevel1TransfersAmount
0
CY2020Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
41703000
CY2020Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
6000
CY2020Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
41697000
CY2019Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
5545000
CY2020Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.098
CY2019Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
52299000
CY2019Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
18000
CY2019Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
2000
CY2019Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
52315000
CY2020Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
3945000
CY2019Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
3788000
CY2020Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
2276000
CY2019Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
1515000
CY2020Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
1669000
CY2019Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
2273000
CY2020 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
800000
CY2019 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
800000
CY2020 us-gaap Lease Cost
LeaseCost
1373000
CY2019 us-gaap Lease Cost
LeaseCost
1479000
CY2020 us-gaap Operating Lease Payments
OperatingLeasePayments
1171000
CY2019 us-gaap Operating Lease Payments
OperatingLeasePayments
1234000
CY2020 spro Non Cash Amount Of Right Of Use Asset And Lease Obligation Incurred
NonCashAmountOfRightOfUseAssetAndLeaseObligationIncurred
2626000
CY2019 spro Non Cash Amount Of Right Of Use Asset And Lease Obligation Incurred
NonCashAmountOfRightOfUseAssetAndLeaseObligationIncurred
1038000
CY2020Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
7114000
CY2019Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
4875000
CY2020Q4 us-gaap Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
736000
CY2019Q4 us-gaap Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
1004000
CY2020Q4 spro Operating And Finance Lease Assets
OperatingAndFinanceLeaseAssets
7850000
CY2019Q4 spro Operating And Finance Lease Assets
OperatingAndFinanceLeaseAssets
5879000
CY2020Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
947000
CY2019Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
928000
CY2020Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
6891000
CY2019Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
4617000
CY2020Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
7838000
CY2019Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.103
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
947000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
1662000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
1690000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
1718000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
1746000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
3113000
CY2020Q4 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
10876000
CY2020Q4 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
3038000
CY2020Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
7838000
CY2020Q4 spro Accrued External Research And Development Expenses Current
AccruedExternalResearchAndDevelopmentExpensesCurrent
7035000
CY2019Q4 spro Accrued External Research And Development Expenses Current
AccruedExternalResearchAndDevelopmentExpensesCurrent
17746000
CY2020Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
3918000
CY2019Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
2630000
CY2020Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
1066000
CY2019Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
803000
CY2020Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
222000
CY2019Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
409000
CY2020Q4 spro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
12241000
CY2019Q4 spro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
21588000
CY2020Q1 spro Proceeds From Issuance Of Common Stock Gross
ProceedsFromIssuanceOfCommonStockGross
9400000
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
9.10
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
37881000
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
3682233
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
9.10
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
37881000
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
1771383
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
7.94
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
20286000
CY2019Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
2969428
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
1214528
CY2020 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
324433
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
177290
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
3682233
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
4942549
CY2020Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
769932
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
0
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.011
CY2019 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.024
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.827
CY2019 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.752
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.000
CY2019 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.000
CY2019Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
2969428
CY2019Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
8.13
CY2019Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
6689000
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
1214528
CY2020 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
10.94
CY2020 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
324433
CY2020 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
6.80
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
177290
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
9.94
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
3682233
CY2020 us-gaap Share Based Compensation
ShareBasedCompensation
4888000
CY2019 us-gaap Share Based Compensation
ShareBasedCompensation
3776000
CY2020 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
0
CY2019 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
0
CY2020 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
-77671000
CY2019 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
-62623000
CY2020 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-609000
CY2019 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
1698000
CY2020 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
-78280000
CY2019 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
-60925000
CY2020 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.210
CY2019 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.210
CY2020 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
-0.032
CY2019 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
-0.030
CY2020 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
-0.062
CY2019 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
-0.067
CY2019 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
-0.008
CY2020 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
0.009
CY2019 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
0.011
CY2020 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
0.295
CY2019 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
0.304
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
63612000
CY2019Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
44239000
CY2020Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
8024000
CY2019Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
5220000
CY2020Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
3403000
CY2019Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
2521000
CY2020Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
75039000
CY2019Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
51980000
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
75039000
CY2019Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
51980000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
228100000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
226200000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards Foreign
DeferredTaxAssetsOperatingLossCarryforwardsForeign
10700000
CY2020 spro Ownership Change Increase In Ownership By Maximum Percentage
OwnershipChangeIncreaseInOwnershipByMaximumPercentage
0.50
CY2019Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
51980000
CY2018Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
34141000
CY2020 spro Valuation Allowance Deferred Tax Asset Increase In Amount
ValuationAllowanceDeferredTaxAssetIncreaseInAmount
23059000
CY2019 spro Valuation Allowance Deferred Tax Asset Increase In Amount
ValuationAllowanceDeferredTaxAssetIncreaseInAmount
17839000
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
75039000
CY2019Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
51980000
CY2020Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2019Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2020Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
0
CY2019Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
0
CY2020Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2017 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.34
CY2018 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2020 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2018 spro Tax Cuts And Jobs Act Of2017 Net Operating Losses Limitation Percentage
TaxCutsAndJobsActOf2017NetOperatingLossesLimitationPercentage
0.80
CY2017 us-gaap Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Asset Income Tax Expense
TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxAssetIncomeTaxExpense
9400000
CY2020 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-78829000
CY2019 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-60925000
CY2020 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
22386122
CY2019 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
18160525
CY2020 us-gaap Profit Loss
ProfitLoss
-78280000
CY2019 us-gaap Profit Loss
ProfitLoss
-60925000
CY2020 us-gaap Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
549000
CY2020 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-3.52
CY2019 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-3.35
CY2020 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
10214794
CY2019 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
5730178
CY2020 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
300000
CY2019 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
200000

Files In Submission

Name View Source Status
0001564590-21-012514-index-headers.html Edgar Link pending
0001564590-21-012514-index.html Edgar Link pending
0001564590-21-012514.txt Edgar Link pending
0001564590-21-012514-xbrl.zip Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
gevav2fdbihf000001.jpg Edgar Link pending
gevav2fdbihf000002.jpg Edgar Link pending
gevav2fdbihf000003.jpg Edgar Link pending
gevav2fdbihf000004.jpg Edgar Link pending
gvevkd3hu4gj000001.jpg Edgar Link pending
gvevkd3hu4gj000002.jpg Edgar Link pending
MetaLinks.json Edgar Link pending
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R64.htm Edgar Link pending
R65.htm Edgar Link pending
R66.htm Edgar Link pending
R67.htm Edgar Link pending
R68.htm Edgar Link pending
R69.htm Edgar Link pending
R7.htm Edgar Link pending
R70.htm Edgar Link pending
R71.htm Edgar Link pending
R72.htm Edgar Link pending
R73.htm Edgar Link pending
R8.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending
spro-10k_20201231.htm Edgar Link pending
spro-10k_20201231_htm.xml Edgar Link completed
spro-20201231.xsd Edgar Link pending
spro-20201231_cal.xml Edgar Link unprocessable
spro-20201231_def.xml Edgar Link unprocessable
spro-20201231_lab.xml Edgar Link unprocessable
spro-20201231_pre.xml Edgar Link unprocessable
spro-ex1013_147.htm Edgar Link pending
spro-ex1025_149.htm Edgar Link pending
spro-ex1028_438.htm Edgar Link pending
spro-ex108_148.htm Edgar Link pending
spro-ex231_7.htm Edgar Link pending
spro-ex311_14.htm Edgar Link pending
spro-ex312_6.htm Edgar Link pending
spro-ex32_150.htm Edgar Link pending