$ALVR
Allovir, Inc. Stock $alvr

$alvr Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-K Financial Statement

#000095017022001075 Filed on February 10, 2022

Income Statement

Concept	2022 Q1	2021 Q4	2021
Revenue	$0.00	$0.00	$0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$14.13M	$14.19M	$49.08M
YoY Change	34.92%	63.89%	126.71%
% of Gross Profit
Research & Development	$29.07M	$41.60M	$120.7M
YoY Change	42.53%	148.23%	143.11%
% of Gross Profit
Depreciation & Amortization	$466.0K	$94.00K	$189.0K
YoY Change	2488.89%	840.0%	158.9%
% of Gross Profit
Operating Expenses	$43.19M	$55.80M	$169.8M
YoY Change	39.95%	119.5%	138.14%
Operating Profit	-$43.19M		-$169.8M
YoY Change	39.95%		138.14%
Interest Expense	$148.0K	$82.00K	$1.315M
YoY Change	-70.98%	-86.33%	-1.13%
% of Operating Profit
Other Income/Expense, Net	-$818.0K	-$1.220M	-$2.452M
YoY Change	44.78%	221.05%	-1357.44%
Pretax Income	-$43.86M	-$56.93M	-$171.0M
YoY Change	41.86%	125.93%	144.98%
Income Tax	$0.00	$1.007M	$1.007M
% Of Pretax Income
Net Earnings	-$43.86M	-$57.94M	-$172.0M
YoY Change	41.85%	129.92%	146.42%
Net Earnings / Revenue
Basic Earnings Per Share	-$0.69		-$2.74
Diluted Earnings Per Share	-$685.4K	-$914.4K	-$2.739M
COMMON SHARES
Basic Shares Outstanding	65.35M	65.14M	62.78M
Diluted Shares Outstanding	63.99M		62.78M

Balance Sheet

Concept	2022 Q1	2021 Q4	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments	$201.4M	$248.1M	$248.1M
YoY Change	-40.24%	-30.37%	-30.36%
Cash & Equivalents	$100.2M	$201.7M	$201.7M
Short-Term Investments	$101.2M	$46.46M	$46.46M
Other Short-Term Assets	$4.894M	$5.178M	$5.178M
YoY Change	122.45%	15.07%	15.07%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$206.4M	$253.3M	$253.3M
YoY Change	-39.22%	-29.88%	-29.88%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.083M	$1.549M	$31.29M
YoY Change	24.63%	90.76%	229.39%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$979.0K	$1.102M	$1.954M
YoY Change
Total Long-Term Assets	$24.65M	$33.25M	$33.25M
YoY Change	112.18%	249.81%	249.96%
TOTAL ASSETS
Total Short-Term Assets	$206.4M	$253.3M	$253.3M
Total Long-Term Assets	$24.65M	$33.25M	$33.25M
Total Assets	$231.1M	$286.6M	$286.6M
YoY Change	-34.22%	-22.71%	-22.71%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.473M	$8.361M	$8.361M
YoY Change	117.45%	768.22%	736.1%
Accrued Expenses	$10.08M	$20.15M	$26.74M
YoY Change	27.97%	167.62%	147.62%
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	$18.64M	$37.85M	$37.85M
YoY Change	20.25%	207.9%	207.75%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$20.78M	$23.48M	$23.48M
YoY Change	284.74%	326.82%	326.82%
Total Long-Term Liabilities	$20.78M	$23.48M	$23.48M
YoY Change	284.74%	326.82%	326.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$18.64M	$37.85M	$37.85M
Total Long-Term Liabilities	$20.78M	$23.48M	$23.48M
Total Liabilities	$39.42M	$61.33M	$61.33M
YoY Change	88.48%	245.37%	244.54%
SHAREHOLDERS EQUITY
Retained Earnings	-$385.6M	-$297.1M
YoY Change	147.14%	137.46%
Common Stock	$7.000K	$7.000K
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$191.7M	$225.3M	$225.3M
YoY Change
Total Liabilities & Shareholders Equity	$231.1M	$286.6M	$286.6M
YoY Change	-34.22%	-22.71%	-22.71%

Cashflow Statement

Concept	2022 Q1	2021 Q4	2021
OPERATING ACTIVITIES
Net Income	-$43.86M	-$57.94M	-$172.0M
YoY Change	41.85%	129.92%	146.42%
Depreciation, Depletion And Amortization	$466.0K	$94.00K	$189.0K
YoY Change	2488.89%	840.0%	158.9%
Cash From Operating Activities	-$46.48M	-$28.07M	-$106.3M
YoY Change	145.57%	33.09%	74.84%
INVESTING ACTIVITIES
Capital Expenditures	$0.00	$370.0K	$26.00K
YoY Change	-100.0%	-254.17%	-88.94%
Acquisitions
YoY Change
Other Investing Activities	-$54.98M	-$13.89M	$186.0M
YoY Change	-184.71%	-743.19%	-209.9%
Cash From Investing Activities	-$54.98M	-$13.52M	$186.0M
YoY Change	-184.81%	-804.32%	-209.73%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	0.000	65.00K	232.0K
YoY Change		-118.57%	-99.92%
NET CHANGE
Cash From Operating Activities	-46.48M	-28.07M	-106.3M
Cash From Investing Activities	-54.98M	-13.52M	186.0M
Cash From Financing Activities	0.000	65.00K	232.0K
Net Change In Cash	-101.5M	-41.53M	79.85M
YoY Change	-320.63%	112.74%	29.68%
FREE CASH FLOW
Cash From Operating Activities	-$46.48M	-$28.07M	-$106.3M
Capital Expenditures	$0.00	$370.0K	$26.00K
Free Cash Flow	-$46.48M	-$28.44M	-$106.3M
YoY Change	144.6%	36.39%	74.2%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2021	alvr	Operating Loss Carryforwards Carryback Period OperatingLossCarryforwardsCarrybackPeriod	P5Y
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001754068
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-39409
CY2021	dei	Entity Registrant Name EntityRegistrantName	ALLOVIR, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	83-1971007
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	1100 Winter Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Waltham
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02451
CY2021	dei	City Area Code CityAreaCode	617
CY2021	dei	Local Phone Number LocalPhoneNumber	433-2605
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $0.0001 per share
CY2021	dei	Trading Symbol TradingSymbol	ALVR
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	true
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
CY2021	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
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CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	122661000
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CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	4543000
CY2021Q4	us-gaap	Assets Current AssetsCurrent	253348000
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	233663000
CY2021Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	50000
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CY2021Q2	dei	Entity Public Float EntityPublicFloat	598900000
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CY2021	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2021	dei	Auditor Location AuditorLocation	Boston, MA, USA
CY2021	dei	Auditor Firm AuditorFirmId	34
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CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
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CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	61084000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	202513000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	122661000
CY2021	alvr	Unrealized Gain Loss On Available For Sale Securities UnrealizedGainLossOnAvailableForSaleSecurities	1000
CY2020	alvr	Conversion Of Preferred Stock To Common Stock Upon Initial Public Offering ConversionOfPreferredStockToCommonStockUponInitialPublicOffering	173127000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201661000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	122661000
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	852000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	202513000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122661000
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	131000000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	185983000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-169497000
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	3474000
CY2020	alvr	Underwriting Discounts UnderwritingDiscounts	22238000
CY2020	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	295449000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	232000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	232000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	291975000
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;">1. Nature of the Business</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">AlloVir, Inc. (“AlloVir” or “the Company”, formerly known as ViraCyte, Inc.) is a leading late clinical-stage cell therapy company developing highly innovative allogeneic T cell therapies to treat and prevent devastating viral diseases. The Company’s innovative and proprietary virus-specific T cell, or VST, therapy platform allows AlloVir to generate off-the-shelf VSTs designed to restore immunity in patients with T-cell deficiencies who are at risk from the life-threatening consequences of viral diseases. There is an urgent medical need for therapies to treat a large number of patients suffering from viral diseases who currently have limited or no treatment options. The Company is developing four innovative, allogeneic, off-the-shelf VST therapy candidates targeting 12 different devastating viruses. The most advanced is posoleucel (previously referred to as Viralym-M or ALVR105), for which the Company has an ongoing pivotal trial for the treatment of virus-associated hemorrhagic cystitis, or HC, and for the treatment of adenovirus, or AdV, infections and ongoing proof-of-concept, or POC, clinical trials for multi-virus prevention in HCT and for BKV treatment in kidney transplant.</span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company's lead product candidate, posoleucel, is a multi-VST cell therapy that targets six viruses: AdV, BK virus, cytomegalovirus, Epstein-Barr virus, human herpesvirus 6 and JC virus. Posoleucel has the potential to fundamentally transform the treatment landscape for transplant patients by substantially reducing or preventing disease morbidity and mortality, thereby dramatically improving patient outcomes. To fully explore the clinical benefit of posoleucel, the Company plans three Phase 3 pivotal and one Phase 2 POC trial in 2022 for the treatment and prevention of life-threatening viral diseases in pediatric and/or adult allogeneic HCT patients, each representing a potential meaningful commercial opportunity. Two of the Phase 3 clinical trials – one in virus-associated HC and one in AdV infection in HCT patients – and a POC trial in BKV are ongoing. A third Phase 3 trial in multi-virus prevention in high-risk allogeneic HCT patients is expected to initiate in the first half of 2022.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company’s pipeline includes additional investigational VST therapies that may benefit high-risk individuals. ALVR106 is the Company’s second off-the-shelf, multi-VST product candidate targeting devastating respiratory diseases caused by human metapneumovirus, or hMPV, influenza, parainfluenza virus, or PIV and respiratory syncytial virus, or RSV. A Phase 1/2 POC clinical study of ALVR106 opened for enrollment at the end of 2021. ALVR109 is an allogeneic, off-the-shelf, single virus-targeted cell therapy designed to target SARS-CoV-2, the virus that causes the severe and life-threatening viral disease, COVID-19. Data from the POC clinical trial of ALVR109 were reported in 2021, and the Company continues to make ALVR109 available to physicians in response to appropriate compassionate use requests. In the preclinical space, the Company is advancing ALVR107 designed to target hepatitis B, or HBV, infected cells and with the aim of curing chronic HBV infection. Preclinical and IND-enabling studies of ALVR107 to treat and cure HBV will be completed in 2022 to support advancement into a POC study.</span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company was formed on August 16, 2013 as a Delaware limited liability company (“LLC”) under the name AdCyte LLC and on July 29, 2014 the Company changed its name to ViraCyte LLC. On September 17, 2018, the Company converted from a Delaware LLC to a Delaware corporation (“LLC Conversion”) and changed its name to ViraCyte, Inc. On May 22, 2019, the Company changed its name to AlloVir, Inc. The Company has principal offices in Waltham, Massachusetts, Houston, Texas and Cambridge, Massachusetts.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On August 8, 2019, AlloVir formed AlloVir International Designated Activity Company (“AlloVir International”), a wholly-owned subsidiary established in Ireland.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On October 9, 2019, AlloVir Securities Corporation was incorporated as a Massachusetts Security Corporation, a wholly-owned subsidiary of AlloVir.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On November 10, 2019, AlloVir International formed AlloVir Italia S.R.L. (“AlloVir Italia”), a wholly-owned subsidiary in Italy.</span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On August 3, 2020, the Company completed an initial public offering (“IPO”) in which the Company issued and sold </span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">18,687,500</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> shares of its common stock, at a public offering price of $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">17.00</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> per share, resulting in gross proceeds of $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">317.7</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million. The Company received $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">292.0</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million in net proceeds after deducting underwriting discounts and commissions and offering costs.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">Upon the closing of the IPO, all of the then-outstanding shares of convertible preferred stock automatically converted into </span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">39,859,139</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> shares of common stock at the applicable conversion ratio then in effect. Subsequent to the closing of the IPO, there were </span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">no</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> shares of convertible preferred stock outstanding.</span></p><p style="text-indent:4.587%;font-size:10.0pt;margin-top:12.0pt;line-height:1.035;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On July 20, 2021 AlloVir Inc formed AlloVir U.S., Inc. (“AlloVir U.S.”), a wholly-owned subsidiary of AlloVir.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;">ElevateBio LLC</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">On September 17, 2018, the Company executed a Series A2 Preferred Stock Purchase Agreement (“Series A2 Agreement”) with ElevateBio, LLC, a Delaware LLC (“ElevateBio”) concurrent with the LLC Conversion. ElevateBio was formed on November 29, 2017</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">and is headquartered in Cambridge, Massachusetts with a focus on the development of a portfolio of novel cell therapy programs acquired through business development activities with biotechnology companies. ElevateBio is structured as a holding company, comprised of asset-specific subsidiaries focused on the development of pipeline assets, as well as a manufacturing subsidiary with the expertise to provide drug development and manufacturing services. As a result of the purchase of the Company’s Series A2 Preferred Stock, ElevateBio acquired an ownership interest in the Company. The Chief Executive Officer, Chief Financial Officer, and other executives of ElevateBio have previously or currently serve in similar management roles with AlloVir. In May 2021, Diana M. Brainard M.D., succeeded David Hallal, ElevateBio's Chief Executive Officer, as the Company’s Chief Executive Officer and principal executive officer.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;">Going Concern</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">In accordance with Accounting Standards Update (“ASU”) 2014-15,</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (Subtopic 205-40)</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">, the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date the consolidated financial statements are issued.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:12.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company is subject to risks and uncertainties common to early-stage companies in the biotechnology industry, including, but not limited to, development by competitors of new technological innovations, 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 and reporting capabilities. Even if the Company’s product development efforts are successful, it is uncertain when, if ever, the Company will realize significant revenue from product sales.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:12.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The accompanying consolidated financial statements have been prepared on the basis of continuity of operations, realization of assets and the satisfaction of liabilities and commitments in the ordinary course of business. Through December 31, 2021, the Company has funded its operations primarily with proceeds received from the sale of common stock, research grants, and from the sale of preferred stock. The Company has incurred recurring losses since its inception, including net losses attributable to common stockholders of $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">172.0</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million for the year ended December 31, 2021 and $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">69.8</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million for the year ended December 31, 2020. In addition, at December 31, 2021, the Company had an accumulated deficit of $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">297.1</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million. The Company expects to continue to generate operating losses for the foreseeable future.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:12.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company believes that its $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">201.7</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million of cash and cash equivalents and $</span><span style="font-size:10.0pt;font-family:Times New Roman;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">46.5</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> million of short-term investments held at December 31, 2021, are sufficient to fund planned operations for at least twelve months from the date that these consolidated financial statements are available to be issued.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;">COVID-19 Considerations</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The development of product candidates could be disrupted and materially adversely affected in the future by a pandemic, epidemic or outbreak of an infectious disease, such as the recent COVID-19 pandemic. The spread of COVID-19 has impacted the global economy and has impacted the Company’s operations, including the interruption of preclinical and clinical trial activities and potential interruption to the Company’s supply chain. For example, the COVID-19 pandemic has delayed clinical trials. If the disruption due to the COVID-19 pandemic continues, planned pivotal clinical trials also could be delayed due to government orders and site policies on account of the pandemic, and some patients may be unwilling or unable to travel to study sites, enroll in trials or be unable to comply with clinical trial protocols if quarantines impede patient movement or interrupt healthcare services, which would delay the Company’s ability to conduct preclinical studies and clinical trials or release clinical trial results and could delay the Company’s ability to obtain regulatory approval and commercialize product candidates. Furthermore, COVID-19 could affect the Company’s employees or the employees of research sites and service providers on whom the Company relies on as well as those of companies with which the Company does business, including suppliers and contract manufacturing organizations or CMOs, thereby disrupting business operations. Quarantines and travel restrictions imposed by governments in the jurisdictions in which the Company and the companies with which it does business operate could materially impact the ability of employees to access preclinical and clinical sites, laboratories, manufacturing sites and offices. For the health and safety of our employees, the Company has implemented work-at-home policies and we have generally restricted on site staff to only those employees who are fully vaccinated or essential to the development and research of product candidates; accordingly, the Company may experience limitations in employee resources. The outbreak and any other preventative or protective actions that the Company, its suppliers or other third parties with which it has business relationships, or governments may take in respect of the COVID-19 pandemic, could disrupt, delay or otherwise adversely impact the business.</span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:12.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The Company is still assessing business plans and the impact the COVID-19 pandemic may have on its ability to advance the testing, development and manufacturing of drug candidates, including as a result of adverse impacts on the research sites, service providers, vendors, or suppliers on whom the Company relies on, or to raise financing to support the development of our drug candidates. No assurances can be given that this analysis will enable the Company to avoid part or all of any impact from the spread of COVID-19 or its consequences, including downturns in business sentiment generally or this sector in particular. The Company cannot presently predict the scope and severity of any potential business shutdowns or disruptions, but if the Company or any of the third parties on whom it relies on or with whom it conducts business, were to experience shutdowns or other business disruptions, the Company’s ability to conduct business in the manner and on the timelines presently planned could be materially and adversely impacted.</span></p>
CY2020Q3	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	292000000.0
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-172000000.0
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-69800000
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-297100000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201700000
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	46500000
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;">Use of Estimates</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Changes in estimates and assumptions are reflected in reported results in the period in which they become known. Actual results could differ from those estimates.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p>
CY2021	alvr	Cash And Cash Equivalents Maturity Period CashAndCashEquivalentsMaturityPeriod	P3M
CY2021	alvr	Short Term Investments Maturity Period ShortTermInvestmentsMaturityPeriod	P1Y
CY2021	alvr	Number Of Individual Securities With Impairment NumberOfIndividualSecuritiesWithImpairment	0
CY2020	alvr	Number Of Individual Securities With Impairment NumberOfIndividualSecuritiesWithImpairment	0
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0
CY2021	us-gaap	Property Plant And Equipment Basis Of Valuation PropertyPlantAndEquipmentBasisOfValuation	cost
CY2021	us-gaap	Property Plant And Equipment Depreciation Methods PropertyPlantAndEquipmentDepreciationMethods	recognizes depreciation using the straight-line method over the estimated useful lives of the respective assets
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
CY2021Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	0
CY2020Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	0
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	100000
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="text-indent:0.0%;font-size:10.0pt;margin-top:18.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;">Concentration of Credit Risk and Off-Balance Sheet Risk</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:Times New Roman;font-style:italic;"> </span></p><p style="text-indent:4.533%;font-size:10.0pt;margin-top:6.0pt;line-height:1.15;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">Financial instruments that subject the Company to credit risk consist primarily of cash, cash equivalents, restricted cash and short-term investments. Periodically, the Company maintains deposits in accredited financial institutions in excess of federally insured limits. The Company deposits its cash in financial institutions that it believes have high credit quality and have 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. Such deposits have and will continue to exceed federally insured limits. The Company has not experienced any losses on its cash deposits.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;"> </span></p><span style="font-size:10.0pt;font-family:Times New Roman;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">At </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">December 31, 2021 and 2020</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:Times New Roman;">, the Company had no off-balance sheet risk.</span></span><span style="white-space:pre-wrap;font-size:10.0pt;font-family:Times New Roman;"/>
CY2021	us-gaap	Concentration Risk Credit Risk Financial Instruments Off Balance Sheet Risk ConcentrationRiskCreditRiskFinancialInstrumentsOffBalanceSheetRisk	At December 31, 2021 and 2020, the Company had no off-balance sheet risk.
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1000
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	46481000
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1000
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	23000
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	46459000
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	233687000
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	24000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	233663000
CY2021Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	150129000
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	46459000
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	95503000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	233663000
CY2021	alvr	Lease Expiration Month And Year LeaseExpirationMonthAndYear	2022-09
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	400000
CY2021	alvr	Non Lease Costs Including Utilities And Cleaning NonLeaseCostsIncludingUtilitiesAndCleaning	37500
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	400000
CY2020	alvr	Non Lease Costs Including Utilities And Cleaning NonLeaseCostsIncludingUtilitiesAndCleaning	58200
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	7767000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5273000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3177000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3255000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3334000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	13247000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	36053000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5987000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30066000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	6591000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	23475000
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	6200000
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	4000000.0
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	5200000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	3600000
CY2021	alvr	Variable Non Lease Cost VariableNonLeaseCost	14500000
CY2020	alvr	Variable Non Lease Cost VariableNonLeaseCost	4500000
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M1D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0496
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	6867000
CY2021	alvr	Number Of Milestone Events NumberOfMilestoneEvents	3
CY2021Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	12834360
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1830000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	904000
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	281000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	92000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1549000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	812000
CY2021	us-gaap	Depreciation Depreciation	200000
CY2020	us-gaap	Depreciation Depreciation	100000
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	3314000
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	738000
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	696000
CY2021Q4	alvr	Accrued Research And Development Current AccruedResearchAndDevelopmentCurrent	3573000
CY2020Q4	alvr	Accrued Research And Development Current AccruedResearchAndDevelopmentCurrent	1797000
CY2021Q4	alvr	Accrued Process Development And Manufacturing Costs Current AccruedProcessDevelopmentAndManufacturingCostsCurrent	7685000
CY2020Q4	alvr	Accrued Process Development And Manufacturing Costs Current AccruedProcessDevelopmentAndManufacturingCostsCurrent	1550000
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1289000
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	173000
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	20152000
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	7530000
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
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
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2021	us-gaap	Common Stock Voting Rights CommonStockVotingRights	The holders of the common stock are entitled to one vote for each share of common stock held at all meetings of stockholders (and written actions in lieu of meetings), and there are not any cumulative voting rights. The number of authorized shares of common stock may be increased or decreased by the affirmative vote of the holders of shares of capital stock of the Company; however, the issuance of common stock may be subject to the vote of the holders of one or more series of preferred stock that may be required by terms of the Third Amended and Restated Certificate of Incorporation.
CY2021	alvr	Number Of Votes Per Share NumberOfVotesPerShare	1
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	11279849
CY2021	us-gaap	Dividends Cash DividendsCash	0
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	3972909
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.84
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P9Y7M6D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	81822000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	2478888
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	32.41
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	25152
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.25
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	274000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	271590
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	25.31
CY2021	alvr	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodAggregateIntrinsicValue	1047000
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	6155055
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.42
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y9M18D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	480000
CY2021Q4	alvr	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableNumber	1310019
CY2021Q4	alvr	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableWeightedAverageExercisePrice	17.87
CY2021	alvr	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableWeightedAverageRemainingContractualTerm	P8Y7M6D
CY2021Q4	alvr	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Exercisable Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableIntrinsicValue	294000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.76
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	13.77
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	43786000
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	P6Y29D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.95
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.95
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0087
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0036
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2021	alvr	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Fair Value Of Common Stock ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValueOfCommonStock	32.41
CY2020	alvr	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Fair Value Of Common Stock ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValueOfCommonStock	18.08
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	43975000
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9429000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	49045000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-68356000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-220000000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1428000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-170955000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-69784000
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	987000
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	20000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1007000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1007000
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-35901000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-14655000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1018000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.006
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1943000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.028
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CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	17756000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.254
CY2021	alvr	Effective Income Tax Rate Reconciliation Intellectual Property Transfer EffectiveIncomeTaxRateReconciliationIntellectualPropertyTransfer	-25538000
CY2021	alvr	Effective Income Tax Rate Reconciliation Intellectual Property Transfer Percent EffectiveIncomeTaxRateReconciliationIntellectualPropertyTransferPercent	0.149
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	5540000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.033
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1220000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.017
CY2021	alvr	Effective Income Tax Rate Reconciliation Officers Compensation EffectiveIncomeTaxRateReconciliationOfficersCompensation	2648000
CY2021	alvr	Effective Income Tax Rate Reconciliation Officers Compensation Percent EffectiveIncomeTaxRateReconciliationOfficersCompensationPercent	-0.015
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-2464000
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CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	730000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.005
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	62000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1007000
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.006
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1000000.0
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5460000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	20866000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4683000
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CY2021Q4	alvr	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	6865000
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CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	8028000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1326000
CY2021Q4	alvr	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Restricted Stock Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsRestrictedStockCompensation	1778000
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1646000
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	910000
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CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	27561000
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CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	2244000
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CY2020Q4	alvr	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	65000
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	34000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	68000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7175000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3006000
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	22300000
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CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
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CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-171962000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-69874000
CY2021	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	62782126
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	26897390
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CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.59
CY2021Q4	alvr	Long Term Purchase Commitment Amount Per Month LongTermPurchaseCommitmentAmountPerMonth	300000
CY2021	alvr	Lease Expiration Month And Year LeaseExpirationMonthAndYear	2022-09
CY2021	alvr	Sublease Expiration Date SubleaseExpirationDate	2022-01-31
CY2021	us-gaap	Long Term Purchase Commitment Minimum Quantity Required LongTermPurchaseCommitmentMinimumQuantityRequired	1
CY2020	us-gaap	Management Fee Expense ManagementFeeExpense	600000
CY2021	us-gaap	Management Fee Expense ManagementFeeExpense	500000
CY2021	alvr	Long Term Purchase Commitment Expiration Month And Year LongTermPurchaseCommitmentExpirationMonthAndYear	2023-07
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	500000
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	100000

Files In Submission

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$ALVR
Allovir, Inc. Stock $alvr

2022 Q1 Form 10-K Financial Statement

#000095017022001075 Filed on February 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALVR Allovir, Inc. Stock $alvr

2022 Q1 Form 10-K Financial Statement

#000095017022001075 Filed on February 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALVR
Allovir, Inc. Stock $alvr