2020 Q4 Form 10-K Financial Statement
#000119312521085043 Filed on March 18, 2021
Income Statement
Concept | 2020 Q4 | 2020 Q1 | 2019 Q4 |
---|---|---|---|
Revenue | $0.00 | $0.00 | |
YoY Change | |||
Cost Of Revenue | |||
YoY Change | |||
Gross Profit | |||
YoY Change | |||
Gross Profit Margin | |||
Selling, General & Admin | $7.970M | $4.640M | |
YoY Change | 68.12% | ||
% of Gross Profit | |||
Research & Development | $16.37M | $13.39M | |
YoY Change | 14.25% | ||
% of Gross Profit | |||
Depreciation & Amortization | $990.0K | $680.0K | $1.330M |
YoY Change | -25.56% | 300.0% | |
% of Gross Profit | |||
Operating Expenses | $24.35M | $18.04M | $16.16M |
YoY Change | 50.67% | 24.59% | |
Operating Profit | -$24.35M | -$18.04M | -$16.16M |
YoY Change | 50.67% | 24.59% | |
Interest Expense | $120.0K | $320.0K | |
YoY Change | -15.79% | ||
% of Operating Profit | |||
Other Income/Expense, Net | |||
YoY Change | |||
Pretax Income | -$24.23M | -$17.72M | |
YoY Change | 25.76% | ||
Income Tax | |||
% Of Pretax Income | |||
Net Earnings | -$24.23M | -$17.72M | -$16.06M |
YoY Change | 50.82% | 25.71% | |
Net Earnings / Revenue | |||
Basic Earnings Per Share | |||
Diluted Earnings Per Share | -$499.7K | -$307.1K | |
COMMON SHARES | |||
Basic Shares Outstanding | 46.52M | ||
Diluted Shares Outstanding |
Balance Sheet
Concept | 2020 Q4 | 2020 Q1 | 2019 Q4 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $262.3M | $104.5M | |
YoY Change | |||
Cash & Equivalents | $62.89M | $104.5M | $15.08M |
Short-Term Investments | $199.4M | $0.00 | |
Other Short-Term Assets | $5.400M | $2.800M | |
YoY Change | |||
Inventory | |||
Prepaid Expenses | |||
Receivables | $0.00 | $0.00 | |
Other Receivables | $0.00 | $0.00 | |
Total Short-Term Assets | $267.7M | $107.3M | $18.16M |
YoY Change | 1374.64% | ||
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $23.78M | $22.60M | $21.85M |
YoY Change | 8.86% | ||
Goodwill | |||
YoY Change | |||
Intangibles | |||
YoY Change | |||
Long-Term Investments | |||
YoY Change | |||
Other Assets | $252.0K | $2.700M | |
YoY Change | |||
Total Long-Term Assets | $26.42M | $25.30M | $23.98M |
YoY Change | 10.16% | ||
TOTAL ASSETS | |||
Total Short-Term Assets | $267.7M | $107.3M | $18.16M |
Total Long-Term Assets | $26.42M | $25.30M | $23.98M |
Total Assets | $294.2M | $132.6M | $42.14M |
YoY Change | 598.04% | ||
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $267.0K | $500.0K | $2.251M |
YoY Change | -88.14% | ||
Accrued Expenses | $8.900M | $4.800M | |
YoY Change | |||
Deferred Revenue | |||
YoY Change | |||
Short-Term Debt | $0.00 | $0.00 | |
YoY Change | |||
Long-Term Debt Due | |||
YoY Change | |||
Total Short-Term Liabilities | $11.22M | $7.100M | $9.158M |
YoY Change | 22.52% | ||
LONG-TERM LIABILITIES | |||
Long-Term Debt | $0.00 | $0.00 | |
YoY Change | |||
Other Long-Term Liabilities | $14.90M | $15.80M | |
YoY Change | |||
Total Long-Term Liabilities | $14.90M | $15.80M | |
YoY Change | |||
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $11.22M | $7.100M | $9.158M |
Total Long-Term Liabilities | $14.90M | $15.80M | |
Total Liabilities | $26.14M | $22.90M | $25.14M |
YoY Change | 3.99% | ||
SHAREHOLDERS EQUITY | |||
Retained Earnings | -$189.0M | -$108.5M | |
YoY Change | 74.25% | ||
Common Stock | $5.000K | $1.000K | |
YoY Change | 400.0% | ||
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $268.0M | -$114.7M | -$98.59M |
YoY Change | |||
Total Liabilities & Shareholders Equity | $294.2M | $132.6M | $42.14M |
YoY Change | 598.04% |
Cashflow Statement
Concept | 2020 Q4 | 2020 Q1 | 2019 Q4 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | -$24.23M | -$17.72M | -$16.06M |
YoY Change | 50.82% | 25.71% | |
Depreciation, Depletion And Amortization | $990.0K | $680.0K | $1.330M |
YoY Change | -25.56% | 300.0% | |
Cash From Operating Activities | -$18.36M | -$17.78M | -$23.59M |
YoY Change | -22.17% | 47.06% | |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$1.800M | -$2.010M | -$6.790M |
YoY Change | -73.49% | -65.58% | |
Acquisitions | |||
YoY Change | |||
Other Investing Activities | $22.14M | $0.00 | $15.08M |
YoY Change | 46.82% | -100.0% | |
Cash From Investing Activities | $20.35M | -$2.010M | $8.300M |
YoY Change | 145.18% | -113.01% | |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | |||
YoY Change | |||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | 2.300M | 109.1M | 70.00K |
YoY Change | 3185.71% | 1091200.0% | |
NET CHANGE | |||
Cash From Operating Activities | -18.36M | -17.78M | -23.59M |
Cash From Investing Activities | 20.35M | -2.010M | 8.300M |
Cash From Financing Activities | 2.300M | 109.1M | 70.00K |
Net Change In Cash | 4.290M | 89.34M | -15.22M |
YoY Change | -128.19% | 2551.04% | |
FREE CASH FLOW | |||
Cash From Operating Activities | -$18.36M | -$17.78M | -$23.59M |
Capital Expenditures | -$1.800M | -$2.010M | -$6.790M |
Free Cash Flow | -$16.56M | -$15.77M | -$16.80M |
YoY Change | -1.43% | 152.32% |
Facts In Submission
Frame | Concept Type | Concept / XBRL Key | Value | Unit |
---|---|---|---|---|
CY2019Q4 | us-gaap |
Restricted Cash Noncurrent
RestrictedCashNoncurrent
|
2052000 | |
CY2019Q4 | us-gaap |
Assets Current
AssetsCurrent
|
18156000 | |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
23781000 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
21845000 | |
CY2020Q4 | us-gaap |
Restricted Cash Noncurrent
RestrictedCashNoncurrent
|
2051000 | |
CY2019Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
2577000 | |
CY2019Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
55000 | |
CY2020Q4 | us-gaap |
Assets Current
AssetsCurrent
|
267735000 | |
CY2020Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
62889000 | |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
15076000 | |
CY2020Q4 | us-gaap |
Marketable Securities Current
MarketableSecuritiesCurrent
|
199438000 | |
CY2020Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
5408000 | |
CY2019Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
87000 | |
CY2020Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
252000 | |
CY2020Q4 | us-gaap |
Assets
Assets
|
294155000 | |
CY2019Q4 | us-gaap |
Assets
Assets
|
42140000 | |
CY2020Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
267000 | |
CY2019Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
2251000 | |
CY2020Q4 | us-gaap |
Accrued Liabilities And Other Liabilities
AccruedLiabilitiesAndOtherLiabilities
|
10953000 | |
CY2019Q4 | us-gaap |
Accrued Liabilities And Other Liabilities
AccruedLiabilitiesAndOtherLiabilities
|
6907000 | |
CY2020Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
11220000 | |
CY2019Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
9158000 | |
CY2020Q4 | us-gaap |
Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
|
14922000 | |
CY2019Q4 | us-gaap |
Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
|
15981000 | |
CY2020Q4 | us-gaap |
Liabilities
Liabilities
|
26142000 | |
CY2019Q4 | us-gaap |
Liabilities
Liabilities
|
25139000 | |
CY2019Q4 | us-gaap |
Temporary Equity Carrying Amount Attributable To Parent
TemporaryEquityCarryingAmountAttributableToParent
|
115593000 | |
CY2020Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
5000 | |
CY2019Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
1000 | |
CY2020Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
456974000 | |
CY2019Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
9859000 | |
CY2020Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
9000 | |
CY2020Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
-188975000 | |
CY2019Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
-108452000 | |
CY2020Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
268013000 | |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
-98592000 | |
CY2020Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
294155000 | |
CY2019Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
42140000 | |
CY2020 | us-gaap |
Research And Development Expense
ResearchAndDevelopmentExpense
|
58532000 | |
CY2019 | us-gaap |
Research And Development Expense
ResearchAndDevelopmentExpense
|
50134000 | |
CY2020 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
22582000 | |
CY2019 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
12168000 | |
CY2020 | us-gaap |
Operating Expenses
OperatingExpenses
|
81114000 | |
CY2019 | us-gaap |
Operating Expenses
OperatingExpenses
|
62302000 | |
CY2020 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-81114000 | |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-62302000 | |
CY2020 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
591000 | |
CY2019 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
985000 | |
CY2020 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
-80523000 | |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
-61317000 | |
CY2020 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-2.95 | |
CY2019 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-12.96 | |
CY2020 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
27256494 | |
CY2019 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
4731519 | |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-80523000 | |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-61317000 | |
CY2020 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
|
9000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
|
9000 | |
CY2020 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-80514000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-61308000 | |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
-41591000 | |
CY2019 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
100000 | |
CY2019 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
4207000 | |
CY2019 | us-gaap |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
|
9000 | |
CY2020 | us-gaap |
Stock Issued During Period Value Conversion Of Convertible Securities
StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
|
224425000 | |
CY2020 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
210715000 | |
CY2020 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
3567000 | |
CY2020 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
8412000 | |
CY2020 | us-gaap |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
|
9000 | |
CY2020 | us-gaap |
Profit Loss
ProfitLoss
|
-80523000 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
-61317000 | |
CY2020 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
8412000 | |
CY2019 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
4207000 | |
CY2020 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
3432000 | |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1864000 | |
CY2020 | us-gaap |
Investment Income Net Amortization Of Discount And Premium
InvestmentIncomeNetAmortizationOfDiscountAndPremium
|
-249000 | |
CY2019 | us-gaap |
Investment Income Net Amortization Of Discount And Premium
InvestmentIncomeNetAmortizationOfDiscountAndPremium
|
317000 | |
CY2020 | gbio |
Increase Decrease In Tenant Improvements Allowance Receivable
IncreaseDecreaseInTenantImprovementsAllowanceReceivable
|
-448000 | |
CY2019 | gbio |
Increase Decrease In Tenant Improvements Allowance Receivable
IncreaseDecreaseInTenantImprovementsAllowanceReceivable
|
-840000 | |
CY2020 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
2831000 | |
CY2019 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
1863000 | |
CY2020 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
252000 | |
CY2020 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-1444000 | |
CY2019 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
761000 | |
CY2020 | us-gaap |
Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
|
3426000 | |
CY2019 | us-gaap |
Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
|
2470000 | |
CY2019 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
20040099 | |
CY2020 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
5939586 | |
CY2020 | us-gaap |
Increase Decrease In Deferred Charges
IncreaseDecreaseInDeferredCharges
|
1059000 | |
CY2020 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
494000 | |
CY2019 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
644000 | |
CY2019 | us-gaap |
Increase Decrease In Deferred Charges
IncreaseDecreaseInDeferredCharges
|
-13019000 | |
CY2020 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
-70142000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
-40346000 | |
CY2020 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
5518000 | |
CY2019 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
19986000 | |
CY2020 | us-gaap |
Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
|
243178000 | |
CY2019 | us-gaap |
Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
|
20789000 | |
CY2019 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
88680000 | |
CY2020 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-205196000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
47985000 | |
CY2020 | us-gaap |
Proceeds From Issuance Of Convertible Preferred Stock
ProceedsFromIssuanceOfConvertiblePreferredStock
|
108854000 | |
CY2020 | us-gaap |
Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
|
213900000 | |
CY2020 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
3567000 | |
CY2019 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
100000 | |
CY2020 | us-gaap |
Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
|
3185000 | |
CY2020 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
323095000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
78000 | |
CY2020 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
47757000 | |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
7717000 | |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
17183000 | |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
9466000 | |
CY2020Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
64940000 | |
CY2020 | us-gaap |
Stock Issued1
StockIssued1
|
224425000 | |
CY2020Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
6150000 | |
CY2019Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
3255000 | |
CY2020Q4 | gbio |
Accrued External Research And Development Expenses Current
AccruedExternalResearchAndDevelopmentExpensesCurrent
|
1772000 | |
CY2019Q4 | gbio |
Accrued External Research And Development Expenses Current
AccruedExternalResearchAndDevelopmentExpensesCurrent
|
1344000 | |
CY2020Q4 | us-gaap |
Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
|
940000 | |
CY2019Q4 | us-gaap |
Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
|
619000 | |
CY2020Q4 | us-gaap |
Deferred Rent Credit Current
DeferredRentCreditCurrent
|
1389000 | |
CY2019Q4 | us-gaap |
Deferred Rent Credit Current
DeferredRentCreditCurrent
|
1370000 | |
CY2020Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
702000 | |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
319000 | |
CY2020Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
150000000 | |
CY2020Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.0001 | |
CY2020 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
8412000 | |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
4207000 | |
CY2020Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
|
27100000 | |
CY2020 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
|
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CY2020 | gbio |
Lessee Operating Lease Year Of Expiry
LesseeOperatingLeaseYearOfExpiry
|
2029 | |
CY2020Q4 | gbio |
Tenant Improvement Allowance Maximum
TenantImprovementAllowanceMaximum
|
14700000 | |
CY2020Q4 | gbio |
Letter Of Credit For Security Deposit
LetterOfCreditForSecurityDeposit
|
2100000 | |
CY2020 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
7500000 | |
CY2019 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
7900000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
7053000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
7251000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
7441000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
7679000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
27570000 | |
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
7881000 | |
CY2019Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
||
CY2020Q4 | us-gaap |
Temporary Equity Par Or Stated Value Per Share
TemporaryEquityParOrStatedValuePerShare
|
0.0001 | |
CY2019Q4 | us-gaap |
Temporary Equity Par Or Stated Value Per Share
TemporaryEquityParOrStatedValuePerShare
|
0.0001 | |
CY2020 | dei |
Entity Address State Or Province
EntityAddressStateOrProvince
|
MA | |
CY2020 | dei |
Security Exchange Name
SecurityExchangeName
|
NASDAQ | |
CY2020Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
46970012 | |
CY2020 | dei |
Entity Ex Transition Period
EntityExTransitionPeriod
|
false | |
CY2020 | dei |
Icfr Auditor Attestation Flag
IcfrAuditorAttestationFlag
|
false | |
CY2020Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
336000 | |
CY2020Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
||
CY2020Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
64875000 | |
CY2020 | dei |
Amendment Flag
AmendmentFlag
|
false | |
CY2020 | dei |
Document Fiscal Year Focus
DocumentFiscalYearFocus
|
2020 | |
CY2020 | dei |
Document Fiscal Period Focus
DocumentFiscalPeriodFocus
|
FY | |
CY2020 | dei |
Entity Interactive Data Current
EntityInteractiveDataCurrent
|
Yes | |
CY2020 | dei |
Entity Central Index Key
EntityCentralIndexKey
|
0001733294 | |
CY2020 | dei |
Current Fiscal Year End Date
CurrentFiscalYearEndDate
|
--12-31 | |
CY2020 | dei |
Document Annual Report
DocumentAnnualReport
|
true | |
CY2020 | dei |
Document Transition Report
DocumentTransitionReport
|
false | |
CY2020 | dei |
Document Type
DocumentType
|
10-K | |
CY2020 | dei |
Document Period End Date
DocumentPeriodEndDate
|
2020-12-31 | |
CY2020 | dei |
Entity Registrant Name
EntityRegistrantName
|
GENERATION BIO CO. | |
CY2020 | dei |
Trading Symbol
TradingSymbol
|
GBIO | |
CY2020 | dei |
Entity File Number
EntityFileNumber
|
001-39319 | |
CY2020 | dei |
Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
|
DE | |
CY2020 | dei |
Entity Current Reporting Status
EntityCurrentReportingStatus
|
Yes | |
CY2020 | dei |
Entity Shell Company
EntityShellCompany
|
false | |
CY2020 | dei |
Entity Small Business
EntitySmallBusiness
|
true | |
CY2020 | dei |
Entity Emerging Growth Company
EntityEmergingGrowthCompany
|
true | |
CY2020Q4 | us-gaap |
Temporary Equity Shares Authorized
TemporaryEquitySharesAuthorized
|
0 | |
CY2019Q4 | us-gaap |
Temporary Equity Shares Authorized
TemporaryEquitySharesAuthorized
|
26425664 | |
CY2020Q4 | us-gaap |
Temporary Equity Shares Issued
TemporaryEquitySharesIssued
|
0 | |
CY2020Q4 | us-gaap |
Temporary Equity Shares Outstanding
TemporaryEquitySharesOutstanding
|
0 | |
CY2019Q4 | us-gaap |
Temporary Equity Shares Issued
TemporaryEquitySharesIssued
|
26425664 | |
CY2019Q4 | us-gaap |
Temporary Equity Shares Outstanding
TemporaryEquitySharesOutstanding
|
26425664 | |
CY2020Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.0001 | |
CY2019Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.0001 | |
CY2020Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
5000000 | |
CY2019Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
0 | |
CY2020Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | |
CY2020Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | |
CY2019Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | |
CY2019Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | |
CY2019Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.0001 | |
CY2019Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
46750000 | |
CY2020Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
46291877 | |
CY2019Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
5270889 | |
CY2019Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
6976077 | |
CY2019 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
10000 | |
CY2019 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
80000 | |
CY2020 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
43500000 | |
CY2020 | us-gaap |
Payments Of Financing Costs
PaymentsOfFinancingCosts
|
41000 | |
CY2019 | us-gaap |
Payments Of Financing Costs
PaymentsOfFinancingCosts
|
22000 | |
CY2020 | dei |
Entity Incorporation Date Of Incorporation
EntityIncorporationDateOfIncorporation
|
2016-10-21 | |
CY2020 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="font-family: times new roman; font-size: 10pt; margin-top: 6pt; margin-bottom: 0pt;"><div style="font-family: "times new roman"; font-size: 10pt; letter-spacing: 0px; top: 0px;;display:inline;"><div style="font-weight:bold;display:inline;"><div style="font-style:italic;display:inline;;font-style:italic;display:inline;">Use of estimates </div></div></div></div> <div style="font-family: times new roman; font-size: 10pt; margin-top: 6pt; margin-bottom: 0pt;"><div style="font-family: "times new roman"; font-size: 10pt; letter-spacing: 0px; top: 0px;;display:inline;">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, the accrual of research and development expenses and stock-based compensation expense. The Company bases its estimates on historical experience, known trends and other market-specific or other relevant factors that it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates, as there are changes in circumstances, facts and experience. Changes in estimates are recorded in the period in which they become known. Actual results may differ from those estimates or assumptions. </div></div> <table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table> | |
CY2020Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
29443000 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
24075000 | |
CY2020Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
5662000 | |
CY2019Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
2230000 | |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
4.76 | |
CY2020 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
13.40 | |
CY2020 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
4.49 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1
|
P7Y8M4D | |
CY2020 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
4.73 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
9.89 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
|
10.57 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
|
4.54 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
|
P8Y7M17D | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
|
0.0060 | |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
|
0.0200 | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
|
0.7730 | |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
|
0.757 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
|
P6Y | |
CY2019 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
|
P6Y | |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
3373884 | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
3090315 | |
CY2020 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
792845 | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
429584 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
5241770 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
|
4585120 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
|
1108099 | |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
8492000 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
99467000 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
|
84238000 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
|
26388000 | |
CY2019Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
1705188 | |
CY2019Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
|
1.22 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
|
1022234 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
|
1.17 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares
|
4819 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue
|
1.95 | |
CY2020Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
678135 | |
CY2020Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
|
1.28 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
|
-0.026 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
|
0.010 | |
CY2019Q4 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-3.09 | |
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 State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
-0.070 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
-0.059 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
|
-0.042 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
|
-0.051 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
0.002 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
0.348 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
0.308 | |
CY2020 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.000 | |
CY2019 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
48280000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
25023000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Research
DeferredTaxAssetsTaxCreditCarryforwardsResearch
|
9385000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Research
DeferredTaxAssetsTaxCreditCarryforwardsResearch
|
5998000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
|
4456000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
|
4740000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
2747000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
1469000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
|
64868000 | |
CY2019Q3 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-3.31 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
|
37230000 | |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
3900000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
4117000 | |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
3900000 | |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
4117000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
60968000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
33113000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
33113000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
14246000 | |
CY2020 | us-gaap |
Tax Adjustments Settlements And Unusual Provisions
TaxAdjustmentsSettlementsAndUnusualProvisions
|
27855000 | |
CY2019 | us-gaap |
Tax Adjustments Settlements And Unusual Provisions
TaxAdjustmentsSettlementsAndUnusualProvisions
|
18867000 | |
CY2020Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
60968000 | |
CY2020 | gbio |
Tax Credit Carryforward Expiration Year
TaxCreditCarryforwardExpirationYear
|
2036 | |
CY2020Q4 | us-gaap |
Operating Loss Carryforwards
OperatingLossCarryforwards
|
169100000 | |
CY2020 | gbio |
Percentage On Annual Taxable Income
PercentageOnAnnualTaxableIncome
|
0.80 | |
CY2020Q4 | us-gaap |
Tax Credit Carryforward Amount
TaxCreditCarryforwardAmount
|
3900000 | |
CY2020 | gbio |
Operating Loss Carryforwards Expiration Year
OperatingLossCarryforwardsExpirationYear
|
2036 | |
CY2020 | gbio |
Percentage Of Change In Ownership
PercentageOfChangeInOwnership
|
0.50 | |
CY2020 | gbio |
Unrecognized Tax Benefits Of Income Tax Rate
UnrecognizedTaxBenefitsOfIncomeTaxRate
|
0.50 | |
CY2020Q4 | us-gaap |
Lessee Operating Lease Renewal Term
LesseeOperatingLeaseRenewalTerm
|
P5Y | |
CY2020 | us-gaap |
Lessee Operating Lease Existence Of Option To Extend
LesseeOperatingLeaseExistenceOfOptionToExtend
|
true | |
CY2020 | us-gaap |
Defined Contribution Plan Employer Matching Contribution Percent
DefinedContributionPlanEmployerMatchingContributionPercent
|
0.04 | |
CY2020 | us-gaap |
Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
|
<div style="font-family: times new roman; font-size: 10pt; margin-top: 18pt; margin-bottom: 0pt;"><div style="font-family: "times new roman"; font-size: 10pt; letter-spacing: 0px; top: 0px;;display:inline;"><div style="font-weight:bold;display:inline;"><div style="font-style:italic;display:inline;;font-style:italic;display:inline;">Concentrations of credit risk and of significant suppliers </div></div></div></div> <div style="font-family: times new roman; font-size: 10pt; margin-top: 6pt; margin-bottom: 0pt;"><div style="font-family: "times new roman"; font-size: 10pt; letter-spacing: 0px; top: 0px;;display:inline;">Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash, cash equivalents, and marketable securities. The Company believes it is not exposed to significant credit risk due to the financial strength of the depository institutions in which the cash and cash equivalents are held. The Company maintains its cash equivalents in money market funds that invest in U.S. treasury securities. The Company’s marketable securities as of December 31, 2020 consisted of U.S government treasury securities, commercial paper and corporate debt securities. The Company has adopted an investment policy that limits the amounts the Company may invest in the securities of single issuer with the exclusion of the U.S. government. The Company has not experienced any credit losses and does not believe that it is subject to significant credit risk. </div></div> <div style="font-family: times new roman; font-size: 10pt; margin-top: 12pt; margin-bottom: 0pt;"><div style="font-family: "times new roman"; font-size: 10pt; letter-spacing: 0px; top: 0px;;display:inline;">The Company is dependent on a small number of third-party suppliers for its drug substance and drug product. In particular, the Company relies, and expects to continue to rely, on third-party suppliers for certain materials and components required for the production of any product candidates it may develop for its programs. These programs could be adversely affected by a significant interruption in the supply process. </div></div> <table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table> | |
CY2019Q2 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-3.30 | |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
33400000 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Tax Settlements
EffectiveIncomeTaxRateReconciliationTaxSettlements
|
0.50 | |
CY2020Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
49700000 | |
CY2020 | gbio |
Preferred Stock Issuance Costs Included In Accrued Expenses
PreferredStockIssuanceCostsIncludedInAccruedExpenses
|
295000 | |
CY2019 | gbio |
Preferred Stock Issuance Costs Included In Accrued Expenses
PreferredStockIssuanceCostsIncludedInAccruedExpenses
|
65000 | |
CY2019Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-14094000 | |
CY2020Q2 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-1.50 | |
CY2020Q1 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-3.22 | |
CY2019Q4 | us-gaap |
Operating Expenses
OperatingExpenses
|
16158000 | |
CY2019Q3 | us-gaap |
Operating Expenses
OperatingExpenses
|
16333000 | |
CY2019Q2 | us-gaap |
Operating Expenses
OperatingExpenses
|
15335000 | |
CY2019Q1 | us-gaap |
Operating Expenses
OperatingExpenses
|
14476000 | |
CY2019Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-16158000 | |
CY2019Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-16333000 | |
CY2019Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-15335000 | |
CY2020Q4 | us-gaap |
Operating Expenses
OperatingExpenses
|
24345000 | |
CY2020Q3 | us-gaap |
Operating Expenses
OperatingExpenses
|
20969000 | |
CY2020Q2 | us-gaap |
Operating Expenses
OperatingExpenses
|
17764000 | |
CY2020Q1 | us-gaap |
Operating Expenses
OperatingExpenses
|
18036000 | |
CY2020Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-24345000 | |
CY2020Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-20969000 | |
CY2020Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-17764000 | |
CY2020Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-18036000 | |
CY2020Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-24226000 | |
CY2020Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-20849000 | |
CY2020Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-17731000 | |
CY2020Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-17717000 | |
CY2020Q4 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.53 | |
CY2020Q3 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.46 | |
CY2019Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-14476000 | |
CY2019Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-16063000 | |
CY2019Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-16128000 | |
CY2019Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-15032000 | |
CY2019Q1 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-3.29 | |
CY2020 | dei |
Entity Filer Category
EntityFilerCategory
|
Non-accelerated Filer | |
CY2019Q4 | us-gaap |
Receivables Net Current
ReceivablesNetCurrent
|
448000 | |
CY2020 | dei |
Entity Voluntary Filers
EntityVoluntaryFilers
|
No | |
CY2020 | dei |
Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
|
No | |
CY2020Q2 | dei |
Entity Public Float
EntityPublicFloat
|
646200000 | |
CY2020Q4 | us-gaap |
Operating Lease Liability Statement Of Financial Position Extensible List
OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList
|
us-gaap:OperatingLeaseLiabilityCurrent | |
CY2019 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P8Y9M14D | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P8Y8M8D | |
CY2020 | dei |
Entity Address Address Line1
EntityAddressAddressLine1
|
301 Binney Street | |
CY2020 | dei |
Entity Address City Or Town
EntityAddressCityOrTown
|
Cambridge | |
CY2020 | dei |
Entity Address Postal Zip Code
EntityAddressPostalZipCode
|
02142 | |
CY2020 | dei |
City Area Code
CityAreaCode
|
617 | |
CY2020 | dei |
Local Phone Number
LocalPhoneNumber
|
655-7500 | |
CY2020 | dei |
Security12b Title
Security12bTitle
|
Common Stock, $0.0001 Par Value | |
CY2021Q1 | dei |
Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
|
56427399 | |
CY2020Q4 | us-gaap |
Preferred Stock Value
PreferredStockValue
|