2021 Q4 Form 10-K Financial Statement

#000156459022010895 Filed on March 17, 2022

View on sec.gov

Income Statement

Concept 2021 Q4 2021 2020 Q4
Revenue $0.00 $0.00 $0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $8.962M $35.73M $8.480M
YoY Change 5.68% 8.3% 36.55%
% of Gross Profit
Research & Development $19.00M $83.11M $19.59M
YoY Change -3.01% -4.73% 13.76%
% of Gross Profit
Depreciation & Amortization $436.0K $1.399M $310.0K
YoY Change 40.65% 15.91% 29.17%
% of Gross Profit
Operating Expenses $27.96M $118.8M $28.06M
YoY Change -0.35% -1.15% 19.76%
Operating Profit -$118.8M
YoY Change
Interest Expense -$265.0K -$285.0K -$70.00K
YoY Change 278.57% -154.81% -109.09%
% of Operating Profit
Other Income/Expense, Net -$285.0K
YoY Change -155.23%
Pretax Income -$28.23M -$119.1M -$28.13M
YoY Change 0.34% -0.49% 24.14%
Income Tax
% Of Pretax Income
Net Earnings -$28.23M -$119.1M -$28.13M
YoY Change 0.34% -0.49% 24.14%
Net Earnings / Revenue
Basic Earnings Per Share -$2.78
Diluted Earnings Per Share -$646.6K -$2.780M -$728.8K
COMMON SHARES
Basic Shares Outstanding 42.85K
Diluted Shares Outstanding 42.85K

Balance Sheet

Concept 2021 Q4 2021 2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments $189.6M $189.6M $259.7M
YoY Change -27.01% -27.01% 38.88%
Cash & Equivalents $189.6M $189.6M $259.7M
Short-Term Investments
Other Short-Term Assets $1.698M $6.881M $275.0K
YoY Change 517.45% 37.62% -20.06%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets $199.1M $199.1M $267.2M
YoY Change -25.48% -25.47% 36.56%
LONG-TERM ASSETS
Property, Plant & Equipment $4.126M $4.126M $3.064M
YoY Change 34.66% 33.1% -17.1%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $74.00K $566.0K $436.0K
YoY Change -83.03% -37.11% -30.24%
Total Long-Term Assets $4.692M $4.692M $3.992M
YoY Change 17.54% 17.3% -17.06%
TOTAL ASSETS
Total Short-Term Assets $199.1M $199.1M $267.2M
Total Long-Term Assets $4.692M $4.692M $3.992M
Total Assets $203.8M $203.8M $271.2M
YoY Change -24.85% -24.84% 35.27%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $3.486M $3.486M $2.682M
YoY Change 29.98% 29.11% -32.08%
Accrued Expenses $15.64M $5.579M $13.69M
YoY Change 14.2% -12.83% 38.96%
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 $19.39M $19.39M $16.61M
YoY Change 16.68% 16.78% 18.53%
LONG-TERM LIABILITIES
Long-Term Debt $14.95M $14.95M $0.00
YoY Change
Other Long-Term Liabilities $30.00K $30.00K $300.0K
YoY Change -90.0% -90.0% -40.0%
Total Long-Term Liabilities $14.98M $14.98M $300.0K
YoY Change 4891.67% 4891.67% -40.0%
TOTAL LIABILITIES
Total Short-Term Liabilities $19.39M $19.39M $16.61M
Total Long-Term Liabilities $14.98M $14.98M $300.0K
Total Liabilities $34.36M $34.36M $16.89M
YoY Change 103.44% 103.32% 16.47%
SHAREHOLDERS EQUITY
Retained Earnings -$383.5M -$264.4M
YoY Change 45.05% 82.73%
Common Stock $553.0M $518.8M
YoY Change 6.6% 56.86%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $169.5M $169.5M $254.3M
YoY Change
Total Liabilities & Shareholders Equity $203.8M $203.8M $271.2M
YoY Change -24.85% -24.84% 35.27%

Cashflow Statement

Concept 2021 Q4 2021 2020 Q4
OPERATING ACTIVITIES
Net Income -$28.23M -$119.1M -$28.13M
YoY Change 0.34% -0.49% 24.14%
Depreciation, Depletion And Amortization $436.0K $1.399M $310.0K
YoY Change 40.65% 15.91% 29.17%
Cash From Operating Activities -$25.90M -$98.03M -$30.48M
YoY Change -15.04% -0.79% 64.05%
INVESTING ACTIVITIES
Capital Expenditures -$850.0K $2.461M -$80.00K
YoY Change 962.5% 109.09% -89.61%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities -$850.0K -$2.461M -$80.00K
YoY Change 962.5% 109.09% -89.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 14.94M 30.37M 70.71M
YoY Change -78.86% -82.41% 235600.0%
NET CHANGE
Cash From Operating Activities -25.90M -98.03M -30.48M
Cash From Investing Activities -850.0K -2.461M -80.00K
Cash From Financing Activities 14.94M 30.37M 70.71M
Net Change In Cash -11.80M -70.12M 40.15M
YoY Change -129.39% -196.53% -307.82%
FREE CASH FLOW
Cash From Operating Activities -$25.90M -$98.03M -$30.48M
Capital Expenditures -$850.0K $2.461M -$80.00K
Free Cash Flow -$25.05M -$100.5M -$30.40M
YoY Change -17.61% 0.51% 70.69%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2021 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2021
CY2021 avro Operating Loss And Tax Credit Carryforwards Limitations Period Over Which Cumulative Changes In Ownership Interest Of Significant Shareholders Considered
OperatingLossAndTaxCreditCarryforwardsLimitationsPeriodOverWhichCumulativeChangesInOwnershipInterestOfSignificantShareholdersConsidered
P3Y
CY2021Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2020Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2021Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2020Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2021 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y21D
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y
CY2020 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P7Y7M24D
CY2021 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P6Y9M14D
CY2021 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P5Y8M8D
CY2021Q4 us-gaap Common Stock Value
CommonStockValue
4000
CY2020Q4 us-gaap Common Stock Value
CommonStockValue
4000
CY2021Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
553014000
CY2021 dei Auditor Firm
AuditorFirmId
42
CY2021 dei Auditor Name
AuditorName
Ernst & Young LLP
CY2021 dei Auditor Location
AuditorLocation
Boston, Massachusetts
CY2021Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
189567000
CY2020Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
259682000
CY2021Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
9578000
CY2020Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
7560000
CY2021Q4 us-gaap Assets Current
AssetsCurrent
199145000
CY2020Q4 us-gaap Assets Current
AssetsCurrent
267242000
CY2021Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
4126000
CY2020Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
3064000
CY2021Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
492000
CY2020Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
492000
CY2021Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
74000
CY2020Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
436000
CY2021Q4 us-gaap Assets
Assets
203837000
CY2020Q4 us-gaap Assets
Assets
271234000
CY2021Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
3486000
CY2020Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
2682000
CY2021Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
15638000
CY2020Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
13693000
CY2021Q4 us-gaap Deferred Rent Credit Current
DeferredRentCreditCurrent
262000
CY2020Q4 us-gaap Deferred Rent Credit Current
DeferredRentCreditCurrent
239000
CY2021Q4 us-gaap Liabilities Current
LiabilitiesCurrent
19386000
CY2020Q4 us-gaap Liabilities Current
LiabilitiesCurrent
16614000
CY2021Q4 us-gaap Long Term Notes Payable
LongTermNotesPayable
14945000
CY2021Q4 us-gaap Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
30000
CY2020Q4 us-gaap Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
276000
CY2021Q4 us-gaap Liabilities
Liabilities
34361000
CY2020Q4 us-gaap Liabilities
Liabilities
16890000
CY2020Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.0001
CY2021Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.0001
CY2020Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2021Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2020Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2021Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2020Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2021Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2020Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.0001
CY2021Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.0001
CY2020Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
150000000
CY2021Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
150000000
CY2020Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
43652000
CY2020Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
43652000
CY2021Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
41569000
CY2021Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
41569000
CY2020 avro Other Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities
OtherAdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
20000
CY2021 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
2018000
CY2020 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-1098000
CY2021 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
-362000
CY2020Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
518756000
CY2021Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-383542000
CY2020Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-264416000
CY2021Q4 us-gaap Stockholders Equity
StockholdersEquity
169476000
CY2020Q4 us-gaap Stockholders Equity
StockholdersEquity
254344000
CY2021Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
203837000
CY2020Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
271234000
CY2021 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
83114000
CY2020 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
87236000
CY2021 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
35727000
CY2020 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
32992000
CY2021 us-gaap Operating Expenses
OperatingExpenses
118841000
CY2020 us-gaap Operating Expenses
OperatingExpenses
120228000
CY2021 us-gaap Investment Income Net
InvestmentIncomeNet
-224000
CY2020 us-gaap Investment Income Net
InvestmentIncomeNet
719000
CY2021 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-119126000
CY2020 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-119712000
CY2021 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-2.78
CY2020 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-3.31
CY2021 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
42854000
CY2020 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
36206000
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
186013000
CY2020 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
270000
CY2020 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
166000
CY2020 us-gaap Net Income Loss
NetIncomeLoss
-119712000
CY2020Q4 us-gaap Stockholders Equity
StockholdersEquity
254344000
CY2021 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
18579000
CY2021 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
920000
CY2021 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
209000
CY2021 us-gaap Net Income Loss
NetIncomeLoss
-119126000
CY2021Q4 us-gaap Stockholders Equity
StockholdersEquity
169476000
CY2021 us-gaap Profit Loss
ProfitLoss
-119126000
CY2020 us-gaap Profit Loss
ProfitLoss
-119712000
CY2021 us-gaap Share Based Compensation
ShareBasedCompensation
18579000
CY2020 us-gaap Share Based Compensation
ShareBasedCompensation
15628000
CY2021 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1399000
CY2020 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1207000
CY2021 avro Deferred Rent Expense
DeferredRentExpense
-223000
CY2020 avro Deferred Rent Expense
DeferredRentExpense
-183000
CY2021 avro Other Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities
OtherAdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
49000
CY2020 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
-84000
CY2021 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
804000
CY2020 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
-881000
CY2021 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
2149000
CY2020 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
3936000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-98025000
CY2020 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-98803000
CY2021 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
2461000
CY2020 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
1177000
CY2021 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-2461000
CY2020 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-1177000
CY2021 us-gaap Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
15000000
CY2021 us-gaap Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
103000
CY2021 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
920000
CY2020 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
270000
CY2021 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
30371000
CY2020 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
172619000
CY2021 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-70115000
CY2020 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
72639000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
260174000
CY2019Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
187535000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
190059000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
260174000
CY2021 us-gaap Interest Paid Net
InterestPaidNet
98000
CY2020 avro Common Stock Offering Costs Incurred But Not Yet Paid
CommonStockOfferingCostsIncurredButNotYetPaid
205000
CY2021Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
189567000
CY2020Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
259682000
CY2021Q4 us-gaap Restricted Cash
RestrictedCash
492000
CY2020Q4 us-gaap Restricted Cash
RestrictedCash
492000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
260174000
CY2021 us-gaap Nature Of Operations
NatureOfOperations
<p style="margin-bottom:0pt;margin-top:12pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">1. Nature of the Business </p> <p style="margin-bottom:0pt;margin-top:6pt;text-indent:4.86%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">AVROBIO, Inc. (the “Company” or “AVROBIO”) is a clinical-stage gene therapy company focused on developing potentially curative <span style="font-style:italic;">ex vivo</span> lentiviral gene therapies to treat rare diseases following a single dose treatment regimen. </p> <p style="margin-bottom:0pt;margin-top:12pt;text-indent:4.86%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company is subject to risks and uncertainties common to early-stage companies in the biotechnology industry, including but not limited to, risks associated with completing preclinical studies and clinical trials, receiving regulatory approvals for product candidates, development by competitors of new biopharmaceutical products, dependence on key personnel, protection of proprietary technology, compliance with government regulations and the ability to secure additional capital to fund operations. Product candidates currently under development will require significant additional research and development efforts, including preclinical and clinical testing and regulatory approval, prior to commercialization. These efforts require significant amounts of additional capital, adequate personnel and infrastructure and extensive compliance-reporting capabilities. Even if the Company’s product development efforts are successful, it is uncertain when, if ever, the Company will realize revenue from product sales. <span style="font-size:12pt;"> </span> <span style="font-size:12pt;">     </span> <span style="font-size:12pt;">      </span> <span style="font-size:12pt;"> </span></p> <p style="margin-bottom:0pt;margin-top:12pt;text-indent:4.86%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company has devoted substantially all of its efforts to research and development, business planning, acquiring operating assets, seeking protection for its technology and product candidates, and raising capital. Since inception, the Company has funded its operations through sales of preferred stock and common stock and a term loan facility. As of December 31, 2021, the Company had an accumulated deficit of $383,542. Although the Company has incurred recurring losses and expects to continue to incur losses for the foreseeable future, the Company expects that its existing cash and cash equivalents on hand as of December 31, 2021 of $189,567 will be sufficient to fund current planned operations and capital expenditure requirements for at least the next twelve months from the filing date of this Annual Report on Form 10-K with the SEC. However, the future viability of the Company is dependent on its ability to raise additional capital to finance its operations. The Company’s inability to raise capital as and when needed could have a negative impact on its financial condition and ability to pursue its business strategies. There can be no assurance that the current operating plan will be achieved or that additional funding will be available on terms acceptable to the Company, or at all. </p>
CY2021Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-383542000
CY2021Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
189567000
CY2021Q4 us-gaap Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
5625000
CY2021Q4 us-gaap Long Term Debt
LongTermDebt
15000000
CY2021Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
150000000
CY2020Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
150000000
CY2021Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.0001
CY2021 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2021 us-gaap Use Of Estimates
UseOfEstimates
<p style="margin-bottom:0pt;margin-top:18pt;margin-left:4.86%;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:6pt;margin-top:6pt;text-indent:5.43%;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 that the Company make estimates and judgments that may affect the reported amounts of assets, liabilities and expenses and the related disclosure of contingent assets and liabilities<span style="color:#000000;"> at the date of the financial statements and the reported amounts of expenses during the reporting periods</span>. </p> <p style="margin-bottom:6pt;margin-top:6pt;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">On an on</span><span style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">‑going basis, the Company evaluates its estimates, judgments and methodologies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates. Changes in estimates are reflected in reported results in the period in which they become known.</span></p>
CY2021 us-gaap Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
<p style="margin-bottom:0pt;margin-top:18pt;margin-left:4.86%;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 </p> <p style="margin-bottom:0pt;margin-top:6pt;text-indent:4.86%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company has no significant off-balance sheet risk, such as foreign exchange contracts, option contracts, or other foreign hedging arrangements. Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash, cash equivalents and restricted cash. Periodically, the Company maintains deposits in accredited financial institutions in excess of federally insured limits. The Company deposits its cash and cash equivalents in financial institutions that it believes have high credit quality and has not experienced any losses on such accounts and does not believe it is exposed to any unusual credit risk beyond the normal credit risk associated with commercial banking relationships. </p>
CY2021 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2020 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2021 avro Foreign Exchange Loss
ForeignExchangeLoss
61000
CY2020 avro Foreign Exchange Loss
ForeignExchangeLoss
203000
CY2021 avro Collaborative Agreement Expenses
CollaborativeAgreementExpenses
1437000
CY2020 avro Collaborative Agreement Expenses
CollaborativeAgreementExpenses
565000
CY2021Q4 avro Fair Value Input Amount Transfer Between Levels
FairValueInputAmountTransferBetweenLevels
0
CY2020Q4 avro Fair Value Input Amount Transfer Between Levels
FairValueInputAmountTransferBetweenLevels
0
CY2021Q4 avro Tax Incentive Refund Current
TaxIncentiveRefundCurrent
2697000
CY2020Q4 avro Tax Incentive Refund Current
TaxIncentiveRefundCurrent
2558000
CY2021Q4 avro Prepaid Research And Development Costs Current
PrepaidResearchAndDevelopmentCostsCurrent
4496000
CY2020Q4 avro Prepaid Research And Development Costs Current
PrepaidResearchAndDevelopmentCostsCurrent
3145000
CY2021Q4 us-gaap Prepaid Insurance
PrepaidInsurance
112000
CY2020Q4 us-gaap Prepaid Insurance
PrepaidInsurance
973000
CY2021Q4 avro Prepaid Compensation Benefits
PrepaidCompensationBenefits
575000
CY2020Q4 avro Prepaid Compensation Benefits
PrepaidCompensationBenefits
609000
CY2020Q4 us-gaap Interest Receivable Current
InterestReceivableCurrent
4000
CY2021Q4 us-gaap Other Assets Current
OtherAssetsCurrent
1698000
CY2021Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
9578000
CY2021Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
7946000
CY2021Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
3820000
CY2021Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
4126000
CY2021 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1399000
CY2021Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
492000
CY2020Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
492000
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
1468969000
CY2021Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
5579000
CY2021Q4 avro Accrued Research And Development Expense Current
AccruedResearchAndDevelopmentExpenseCurrent
8882000
CY2021Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
999000
CY2021Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
178000
CY2020Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
348000
CY2021Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
15638000
CY2020Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
13693000
CY2018Q1 avro Lease Expiration Month And Year
LeaseExpirationMonthAndYear
2023-01
CY2018Q1 avro Operating Lease Annual Increase In Rental Percentage
OperatingLeaseAnnualIncreaseInRentalPercentage
0.03
CY2018Q1 us-gaap Payments For Proceeds From Tenant Allowance
PaymentsForProceedsFromTenantAllowance
842000
CY2018Q3 avro Lease Expiration Month And Year
LeaseExpirationMonthAndYear
2020-10
CY2020Q2 avro Lease Expiration Month And Year
LeaseExpirationMonthAndYear
2022-04
CY2020Q2 avro Lease Expiration Month And Year
LeaseExpirationMonthAndYear
2025-06
CY2021 avro Annual Lease Payments Description
AnnualLeasePaymentsDescription
The annual lease payments are fixed for years 1 and 2, and then subject to a 6.67% increase for years 3 through 5
CY2020Q2 avro Operating Lease Annual Increase In Rental Percentage
OperatingLeaseAnnualIncreaseInRentalPercentage
0.0667
CY2021 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
2648000
CY2020 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
2352000
CY2021Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
1297000
CY2021Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
208000
CY2021Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
147000
CY2021Q4 us-gaap Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
73000
CY2021Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
1725000
CY2021Q4 us-gaap Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
16350000
CY2021Q4 us-gaap Deferred Finance Costs Net
DeferredFinanceCostsNet
1405000
CY2021Q4 us-gaap Long Term Notes Payable
LongTermNotesPayable
14945000
CY2021Q4 us-gaap Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
1875000
CY2021Q4 us-gaap Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
7500000
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
13.54
CY2020Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.0001
CY2021Q4 avro Undesignated Preferred Stock
UndesignatedPreferredStock
10000000
CY2020Q4 avro Undesignated Preferred Stock
UndesignatedPreferredStock
10000000
CY2021Q4 avro Undesignated Shares Of Preferred Stock Outstanding
UndesignatedSharesOfPreferredStockOutstanding
0
CY2020Q4 avro Undesignated Shares Of Preferred Stock Outstanding
UndesignatedSharesOfPreferredStockOutstanding
0
CY2021 us-gaap Dividends Cash
DividendsCash
0
CY2021Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
13808059
CY2020Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
12266171
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0080
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0076
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.8122
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.7602
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
5559545
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
14.97
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
13511000
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
4253232
CY2021 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
12.64
CY2021 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
226180
CY2021 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
4.07
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
2162820
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
16.55
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
7423777
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
2690230
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
12.87
CY2021Q4 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
1466939000
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
1826000
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
2077000
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
8.70
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
12.28
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
1198
CY2020Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
15.65
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
771600
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
9.63
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
575
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
15.65
CY2021 avro Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod
172373
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
9.63
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
599850
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
9.64
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
5000
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
29000
CY2021 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
18579000
CY2020 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
15628000
CY2021Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
43331000
CY2021 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P2Y9M25D
CY2020 avro Additional Research And Development Expense
AdditionalResearchAndDevelopmentExpense
417000
CY2021 us-gaap Description Of Defined Contribution Pension And Other Postretirement Plans
DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans
Currently, the Company makes matching contributions at a rate of 50% of the first 6% of employee contributions.
CY2021 us-gaap Defined Contribution Plan Employer Matching Contribution Percent Of Match
DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
0.50
CY2021 us-gaap Defined Contribution Plan Employer Matching Contribution Percent
DefinedContributionPlanEmployerMatchingContributionPercent
0.06
CY2021 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
593000
CY2020 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
468000
CY2021 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
0
CY2020 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
0
CY2021Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
100893000
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
70492000
CY2021Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
107000
CY2020Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
160000
CY2021Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
107000
CY2020Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
160000
CY2021 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
30401000
CY2020 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
32066000
CY2021 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.210
CY2020 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.210
CY2021 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.060
CY2020 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.056
CY2021 avro Effective Income Tax Rate Reconciliation Permanent Difference
EffectiveIncomeTaxRateReconciliationPermanentDifference
-0.012
CY2020 avro Effective Income Tax Rate Reconciliation Permanent Difference
EffectiveIncomeTaxRateReconciliationPermanentDifference
-0.006
CY2021 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
0.001
CY2020 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
0.001
CY2021 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.020
CY2020 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.023
CY2021 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.279
CY2020 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.283
CY2021 us-gaap Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
0.000
CY2020 us-gaap Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
-0.001
CY2021 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.000
CY2020 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.000
CY2021Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
84102000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
57705000
CY2021Q4 us-gaap Deferred Tax Assets In Process Research And Development
DeferredTaxAssetsInProcessResearchAndDevelopment
7821000
CY2020Q4 us-gaap Deferred Tax Assets In Process Research And Development
DeferredTaxAssetsInProcessResearchAndDevelopment
4383000
CY2021Q4 avro Deferred Tax Assets Capitalized Start Up And Organizational Costs
DeferredTaxAssetsCapitalizedStartUpAndOrganizationalCosts
26000
CY2020Q4 avro Deferred Tax Assets Capitalized Start Up And Organizational Costs
DeferredTaxAssetsCapitalizedStartUpAndOrganizationalCosts
29000
CY2021Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
3926000
CY2020Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
2944000
CY2021Q4 avro Deferred Tax Assets License Agreement
DeferredTaxAssetsLicenseAgreement
3749000
CY2020Q4 avro Deferred Tax Assets License Agreement
DeferredTaxAssetsLicenseAgreement
4004000
CY2021Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther
1376000
CY2020Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther
1587000
CY2021Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
101000000
CY2020Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
70652000
CY2021Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
312967000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
213991000
CY2021Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration
DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration
295224000
CY2021Q4 avro Payroll Tax Liability Capped Per Year
PayrollTaxLiabilityCappedPerYear
250000
CY2021 us-gaap Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
250000
CY2021 avro Tax Credit Carryforwards Expiration Period
TaxCreditCarryforwardsExpirationPeriod
P20Y
CY2021 avro Operating Loss And Tax Credit Carryforwards Limitations Threshold Percentage Of Cumulative Changes In Ownership Interest Of Significant Shareholders Considered
OperatingLossAndTaxCreditCarryforwardsLimitationsThresholdPercentageOfCumulativeChangesInOwnershipInterestOfSignificantShareholdersConsidered
0.50

Files In Submission

Name View Source Status
0001564590-22-010895-index-headers.html Edgar Link pending
0001564590-22-010895-index.html Edgar Link pending
0001564590-22-010895.txt Edgar Link pending
0001564590-22-010895-xbrl.zip Edgar Link pending
avro-10k_20211231.htm Edgar Link pending
avro-10k_20211231_htm.xml Edgar Link completed
avro-20211231.xsd Edgar Link pending
avro-20211231_cal.xml Edgar Link unprocessable
avro-20211231_def.xml Edgar Link unprocessable
avro-20211231_lab.xml Edgar Link unprocessable
avro-20211231_pre.xml Edgar Link unprocessable
avro-ex1022_34.htm Edgar Link pending
avro-ex211_9.htm Edgar Link pending
avro-ex231_6.htm Edgar Link pending
avro-ex311_8.htm Edgar Link pending
avro-ex312_7.htm Edgar Link pending
avro-ex321_10.htm Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
gfgzzkq0234g000001.jpg Edgar Link pending
gfgzzkq0234g000002.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
R7.htm Edgar Link pending
R8.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending