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KLRS US Equity

Kalaris Therapeutics, Inc.Health Care · Biological Products, (No Diagnostic Substances) · CIK 1754068 · FY ends Dec 31
$4.15
+0.03 (+0.73%)
USD · as of 2026-08-21 · marketstack

KLRS · 10-K · period ended 2021-12-31

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filed 2022-02-10 · EDGAR original ↗

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and related notes appearing elsewhere in this Annual Report on Form 10-K. This discussion and other parts of this Annual Report on Form 10-K contain forward-looking statements that involve risks and uncertainties, such as statements of our plans, objectives, expectations and intentions. As a result of many factors, including those factors set forth in the “Risk Factors” section of this Annual Report on Form 10-K, our actual results could differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a leading late clinical-stage cell therapy company developing highly innovative allogeneic T-cell therapies to treat and prevent devastating viral diseases. Our innovative and proprietary virus-specific T-cell, or VST, therapy platform allows us 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. We are 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 we 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 POC clinical trials for multi-virus prevention in HCT and for BKV treatment in kidney transplant.

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, we plan 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.

Our pipeline includes additional investigational VST therapies that may benefit high-risk individuals. ALVR106 is our 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 we continue to make ALVR109 available to physicians in response to appropriate compassionate use requests. In the preclinical space, we are 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.

Since inception, we have devoted substantially all of our resources on raising capital, organizing and staffing our company, business planning, conducting discovery and research activities, acquiring or discovering product candidates, establishing and protecting our intellectual property portfolio, developing and progressing posoleucel, ALVR106, ALVR107, ALVR109 and other product candidates and preparing for clinical trials and establishing arrangements with third parties for the manufacture of our product candidates and component materials. We do not have any product candidates approved for sale and have not generated any revenue from product sales. On August 3, 2020, we completed an initial public offering, or “IPO,” of our common stock and issued and sold 18,687,500 shares of our common stock at a public offering price of $17.00 per share, resulting in net proceeds of $292.0 million after deducting underwriting discounts and commissions and offering costs. Prior to our IPO, we have funded our operations to date primarily through equity financings and have received proceeds of $156.3 million, net of issuance costs of $0.6 million, from the sale of our preferred stock.

On August 6, 2021, we filed an automatically effective registration statement on Form S-3 (the “Registration Statement”) with the SEC which registered the offering, issuance and sale of an unspecified amount of common stock, preferred stock, debt securities, warrants and/or units of any combination thereof. We simultaneously entered into a sales agreement with SVB Leerink LLC, as sales agent, to provide for the issuance and sale by the Company of up to $100.0 million of common stock from time to time in “at-the-market” offerings under the Registration Statement and related prospectus filed with the Registration Statement (the “ATM Program”). As of December 31, 2021, no sales had been made pursuant to the ATM Program.

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We have incurred significant operating losses since inception, including net losses of $172.0 million and $69.8 million for the years ended December 31, 2021 and 2020, respectively. At December 31, 2021, we had an accumulated deficit of $297.1 million.

These losses have resulted primarily from costs incurred in connection with research and development activities and general and administrative costs associated with our operations. We expect to continue to incur significant and increasing expenses and operating losses for the foreseeable future, particularly if and as we:

initiate and conduct additional preclinical studies and clinical trials for our product candidates;

continue to discover and develop additional product candidates;

acquire or in-license other product candidates and technologies;

maintain, expand, and protect our intellectual property portfolio;

hire additional clinical and scientific personnel;

expand our manufacturing capabilities with third parties and establish manufacturing capabilities in-house;

seek regulatory approvals and pursue commercialization for any product candidates that successfully complete clinical trials; and

add operational, financial, and management information systems and personnel, including personnel to support our product development and planned future commercialization efforts.

We expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that we did not incur as a private company. As a result, we will need substantial additional funding to support our continuing operations and pursue our growth strategy. Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our operations through the sale of equity, debt financings or other capital sources, including potential collaborations with other companies or other strategic transactions. Our inability to raise capital as and when needed could have a negative impact on our financial condition and ability to pursue our business strategies. There can be no assurances, however, that the current operating plan will be achieved or that additional funding will be available on terms acceptable to us, or at all.

At December 31, 2021, we had cash, cash equivalents and short-term investments of $248.1 million. We believe that our existing cash, cash equivalents and short-term investments will enable us to fund our operating expenses and capital expenditure requirements into the second half of 2023. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. See “—Liquidity and Capital Resources.”

The development of our 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 ongoing COVID-19 pandemic. The spread of COVID-19 has impacted the global economy and has impacted our operations, including the interruption of our preclinical and clinical trial activities and potential interruption to our supply chain. For example, the COVID-19 pandemic has delayed clinical trials. If the disruption due to the COVID-19 pandemic continues, our 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 our trials or be unable to comply with clinical trial protocols if quarantines impede patient movement or interrupt healthcare services, which would delay our ability to conduct preclinical studies and clinical trials or release clinical trial results and could delay our ability to obtain regulatory approval and commercialize our product candidates. Furthermore, COVID-19 could affect our employees or the employees of research sites and service providers on whom we rely, including contract research organizations, or CROs, as well as those of companies with which we do business, including our suppliers and contract manufacturing organizations, or CMOs, thereby disrupting our business operations. Quarantines and travel restrictions imposed by governments in the jurisdictions in which we and the companies with which we do 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, we may experience limitations in employee resources. The outbreak and any other preventative or protective actions that we, our suppliers or other third parties with which we have business relationships, or governments may take in respect of the COVID-19 pandemic, could disrupt, delay, or otherwise adversely impact our business.

We are still assessing our business plans and the impact the COVID-19 pandemic may have on our ability to advance the testing, development and manufacturing of our drug candidates, including as a result of adverse impacts on the research sites, service providers, vendors, or suppliers on whom we rely, or to raise financing to support the development of our drug candidates. No assurances can be given that this analysis will enable us to avoid part or all of any impact from the spread of COVID-19 or its consequences, including downturns in business sentiment generally or in our sector in particular. We cannot presently predict the scope and severity of any

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potential business shutdowns or disruptions, but if we or any of the third parties on whom we rely or with whom we conduct business, were to experience shutdowns or other business disruptions, our ability to conduct our business in the manner and on the timelines presently planned could be materially and adversely impacted.

Relationship with ElevateBio

On September 17, 2018, we entered into a Series A2 Preferred Stock Purchase Agreement, or the Series A2 Agreement, with ElevateBio. ElevateBio was formed in November 2017 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 the pipeline assets, as well as a manufacturing subsidiary with the expertise to provide drug development and manufacturing services. As a result of ElevateBio’s purchase of our Series A2 Preferred Stock, which converted to common stock upon completion of our IPO, ElevateBio acquired an ownership interest to our audited consolidated financial statements appearing elsewhere in this Form 10-K. The Chief Financial Officer of ElevateBio currently serves in a similar management role with us. In May 2021, Diana M. Brainard M.D., succeeded David Hallal, ElevateBio’s Chief Executive Officer, as the Company’s Chief Executive Officer. Mr. Hallal continues to serve as Executive Chairman of the Company's board of directors. In addition to Mr. Hallal and Mr. Sinha, two other members of the Company's board of directors, Morana Jovan-Embiricos and Ansbert Gadicke, also serve as directors of the board of directors of ElevateBio.

Initial Public Offering

On August 3, 2020, the Company completed its IPO, in which the Company issued and sold 18,687,500 shares of its common stock, at a public offering price of $17.00 per share, resulting in gross proceeds of $317.7 million. The Company received $292.0 million in net proceeds after deducting underwriting discounts and commissions and offering costs. Upon the closing of the IPO, all of the then-outstanding shares of convertible preferred stock automatically converted into 39,859,139 shares of common stock at the applicable conversion ratio then in effect.

Components of Results of Operations

Operating Expenses

Research and Development Expenses

Research and development expenses consist primarily of costs incurred in connection with our research and development activities, including our drug discovery efforts and the development of our product candidates. We expense research and development costs as incurred, which include:

external research and development expenses incurred under agreements with contract research organizations, or CROs, as well as investigative sites and consultants that conduct our clinical trials and other scientific development services;

costs related to manufacturing material for our clinical trials, including fees paid to CMOs;

manufacturing scale-up expenses and the cost of acquiring and manufacturing clinical trial materials;

employee-related expenses, including salaries, bonuses, benefits, stock-based compensation and other related costs for those employees involved in research and development efforts;

costs of outside consultants, including their fees, stock-based compensation and related travel expenses;

the costs of acquiring and developing clinical trial materials;

expenses to acquire technologies, such as intellectual property, to be used in research and development;

upfront and maintenance fees incurred under license, acquisition and other third-party agreements;

costs related to compliance with regulatory requirements; and

facilities, depreciation, and other expenses, which include direct and allocated expenses for rent, maintenance of facilities and equipment and software.

Costs for certain activities are recognized based on an evaluation of the progress to completion of specific tasks using data such as information provided to us by our vendors and analyzing the progress of our discovery studies or other services performed. Significant judgment and estimates are made in determining the accrued expense balances at the end of any reporting period.

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We characterize research and development costs incurred prior to the identification of a product candidate as discovery costs. Once a product candidate has been identified, research and development costs incurred are allocated as product candidate costs.

Our direct, external research and development expenses consist primarily of fees paid to outside consultants, CROs, CMOs and research laboratories in connection with our process development, manufacturing and clinical development activities. Our direct external research and development expenses also include fees incurred under license and intellectual property purchase agreements. We track these external research and development costs on a program-by-program basis once we have identified a mature product candidate.

We do not allocate employee costs, costs associated with our discovery efforts, and facilities, including depreciation or other indirect costs, to specific programs because these costs are deployed across multiple programs and, as such, are not separately classified. We use internal resources and third-party consultants primarily to conduct our research and discovery activities as well as for managing our process development, manufacturing and clinical development activities.

The successful development of our product candidates is highly uncertain. We plan to substantially increase our research and development expenses for the foreseeable future as we continue the development of our product candidates and manufacturing processes and conduct discovery and research activities for our clinical programs. We cannot determine with certainty the timing of initiation, the duration or the completion costs of current or future clinical trials of our product candidates due to the inherently unpredictable nature of preclinical and clinical development. Clinical development timelines, the probability of success and development costs can differ materially from expectations. We anticipate that we will make determinations as to which product candidates to pursue and how much funding to direct to each product candidate on an ongoing basis in response to the results of ongoing and future clinical trials, regulatory developments and our ongoing assessments as to each product candidate’s commercial potential. We will need to raise substantial additional capital in the future. Our clinical development costs are expected to increase significantly with our ongoing clinical trials. We anticipate that our expenses will increase substantially, particularly due to the numerous risks and uncertainties associated with developing product candidates, including the uncertainty of:

the scope, rate of progress and expenses of our ongoing research activities and clinical trials and other research and development activities;

establishing an appropriate safety profile;

successful enrollment in and completion of clinical trials;

whether our product candidates show safety and efficacy in our clinical trials;

receipt of marketing approvals from applicable regulatory authorities;

establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our product candidates;

commercializing product candidates, if and when approved, whether alone or in collaboration with others; and

continued acceptable safety profile of the products following any regulatory approval.

Any changes in the outcome of any of these variables with respect to the development of our product candidates in clinical development could mean a significant change in the costs and timing associated with the development of these product candidates. We may never succeed in achieving regulatory approval for any of our product candidates. We may obtain unexpected results from our clinical trials. We may elect to discontinue, delay or modify clinical trials of some product candidates or focus on others. For example, if the FDA, EMA or another regulatory authority were to delay our planned start of clinical trials or require us to conduct clinical trials or other testing beyond those that we currently expect or if we experience significant delays in enrollment in any of our planned clinical trials, we could be required to expend significant additional financial resources and time on the completion of clinical development of that product candidate.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related costs, including salaries, bonuses, benefits, stock-based compensation and other related costs, as well as expenses for outside professional services, including legal, accounting and audit services and other consulting fees, rent expense and other general administrative expenses.

We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support our continued research activities and development of our product candidates. We have incurred significantly increased accounting, audit, legal, regulatory, compliance and director and officer insurance costs as well as investor and public relations expenses associated with operating as a public company.

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Total Other Income (Loss), Net

Interest income

Interest income consists of interest income on cash, cash equivalents and short-term investments held in financial institutions.

Other income (loss), net

“Other income (loss), net” consists primarily of investment amortization and accretion of discounts on short-term investments, foreign exchange gains and losses, other income from government grants based on expenditures that qualify for reimbursement and interest expense.

Income tax expense

Income tax expense consists of current income tax expense which is expected to be payable for the current year.

Results of Operations

Comparison of the Years Ended December 31, 2021 and 2020

The following table summarizes our results of operations (in thousands):

Years Ended December 31,

Operating expenses:

Total other income (loss), net:

Research and Development Expenses

The following table summarizes our research and development costs for each of the periods presented (in thousands):

Years Ended December 31,

Direct research and development expenses by program:

Unallocated research and development expenses:

Personnel expenses (including stock-based compensation) 52,019 20,723 31,296

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Research and development expenses were $120.7 million for the year ended December 31, 2021, compared to $49.7 million for the year ended December 31, 2020. The increase of $71.1 million was primarily due to:

a $29.3 million increase in costs related to the development of posoleucel, our most advanced product candidate, primarily due to an increase in costs related to the outsourcing of manufacturing of $14.1 million and the development of clinical trials of $15.2 million;

a $4.0 million increase in costs related to the development of ALVR106, primarily due to an increase in costs related to the outsourcing of manufacturing of $4.2 million;

a $2.4 million increase in costs related to the development of ALVR109, primarily due to increased costs related to COVID-19 clinical trials;

a $1.2 million increase in costs related to discovery activities, primarily due to costs related to the outsourcing of manufacturing;

a $31.3 million increase in personnel-related costs, including an increase in stock-based compensation expense of $17.1 million and a decrease of $2.5 million in costs for external consultants, due to an increase in employee headcount in support of research activities; and

a $2.9 million increase in other research and development expenses, including facilities, rent, travel and equipment driven by an increase in headcount.

General and Administrative Expenses

General and administrative expenses were $49.1 million for the year ended December 31, 2021, compared to $21.6 million for the year ended December 31, 2020. The increase of $27.4 million primarily consisted of an increase of $21.6 million in personnel-related costs, including stock-based compensation of expense $17.5 million, due to an increase in headcount, a $1.6 million increase in professional and consulting fees for legal and accounting, a $2.7 million increase in insurance and a $1.0 million increase in software and IT services due to increased operations.

Total Other Income (Loss), Net

Total “other income (loss), net” was $(1.1) million for the year ended December 31, 2021, compared to $1.5 million for the year ended December 31, 2020. The decrease of $2.7 million is primarily attributable to a decrease of $1.2 million in foreign exchange gains and losses, a decrease of $0.7 million resulting from a change in amortization and accretion of discounts on short-term investments and a decrease of $0.6 million in other income from government grants.

Income Tax Expense

Income tax expense was $1.0 million for the year ended December 31, 2021, compared to $0 for the year ended December 31, 2020. The increase in income tax expense was due to a transfer of intellectual property rights between tax jurisdictions in 2021.

Liquidity and Capital Resources

Sources of Liquidity

At December 31, 2021, we have funded our operations primarily through equity financings and have received net cash proceeds of approximately $156.3 million from the sale of our preferred stock and $292.0 million of net proceeds from the sale of common stock in our IPO. On August 6, 2021, we filed the Registration Statement with the SEC and simultaneously entered into a sales agreement with SVB Leerink LLC, as sales agent, for the ATM Program. As of December 31, 2021, no sales had been made pursuant to the ATM Program.

We currently have no ongoing material financing commitments, such as lines of credit or guarantees, that are expected to affect our liquidity over the next five years, other than our manufacturing, licensing and lease obligations described further below.

Funding Requirements

At December 31, 2021, our cash, cash equivalents and short-term investments were $248.1 million. We believe that our existing cash, cash equivalents and short-term investments, will enable us to fund our operating expenses and capital expenditure requirements

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into the second half of 2023. We have based this estimate on assumptions that may prove to be wrong, and we could expend our capital resources sooner than we expect.

We expect to incur significant expenses and operating losses for the foreseeable future as we advance our product candidates through clinical development, seek regulatory approval and pursue commercialization of any approved product candidates. We expect that our research and development and general and administrative costs will increase in connection with our planned research and development activities. In addition, we expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that we did not incur as a private company. If we receive regulatory approval for our product candidates, we expect to incur significant commercialization expenses related to product manufacturing, sales, marketing and distribution, depending on where we choose to commercialize. We may also require additional capital to pursue in-licenses or acquisitions of other product candidates.

Because of the numerous risks and uncertainties associated with research, development and commercialization of pharmaceutical product candidates, we are unable to estimate the amount of our working capital requirements. Our future capital requirements will depend on many factors, including:

the scope, progress, results and costs of researching and developing posoleucel for our initial and potential additional indications, as well as ALVR106, ALVR109 and other product candidates we may develop, including any COVID-19-related delays or other effects on our development programs;

the timing of, and the costs involved in, obtaining marketing approvals for posoleucel for our initial and potential additional indications, and ALVR106, ALVR109 and other product candidates we may develop;

if approved, the costs of commercialization activities for posoleucel for any approved indications, or ALVR106, ALVR109 or any other product candidate that receives regulatory approval to the extent such costs are not the responsibility of a collaborator that we may contract with in the future, including the costs and timing of establishing product sales, marketing, distribution and manufacturing capabilities;

subject to receipt of regulatory approval, revenue, if any, received from commercial sales of posoleucel for any approved indications or ALVR106, ALVR109 or any other product candidates;

the extent to which we in-license or acquire rights to other products, product candidates or technologies;

our headcount growth and associated costs as we expand our research and development, increase our office space, and establish a commercial infrastructure;

the costs of preparing, filing and prosecuting patent applications, maintaining and protecting our intellectual property rights, including enforcing and defending intellectual property related claims; and

the ongoing costs of operating as a public company.

Until such time, if ever, as we can generate substantial product revenues to support our cost structure, we expect to finance our cash needs through a combination of equity offerings, debt financings, collaborations and other similar arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our shareholders will be or could be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common shareholders. Debt financing and equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise funds through collaborations, or other similar arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common stock. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves.

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Cash Flows

The following table summarizes our cash flows for each of the periods presented (in thousands):

Years Ended December 31,

Net cash used in operating activities $ (106,319 ) $ (60,811 )

Net cash provided by (used in) investing activities 185,983 (169,497 )

Net cash provided by financing activities 232 291,975

Effect of exchange rate changes on cash and cash equivalents (44 ) (90 )

Net increase in cash and cash equivalents $ 79,852 $ 61,577

Operating Activities

Net cash used in operating activities was $106.3 million for the year ended December 31, 2021, reflecting a net loss of $172.0 million, partially offset by non-cash charges of $46.3 million. The non-cash charges primarily consist of non-cash lease expense, amortization of discounts on short-term investments and stock compensation expense. The change in our net operating assets and liabilities of $19.4 million was primarily due to an increase of $20.3 million in accounts payable, accrued expenses and amount due to related party and an increase of $1.0 million in income tax payable partially offset by an increase of $1.2 million in prepaid expenses and other current assets and an increase of $1.1 million in other assets.

Net cash used in operating activities was $60.8 million for the year ended December 31, 2020, reflecting a net loss of $69.8 million, partially offset by non-cash charges of $10.0 million. The non-cash charges primarily consist of depreciation and amortization, amortization of discounts on short-term investments and stock compensation expense. The change in our net operating assets and liabilities of $1.0 million was primarily due to an increase of $4.0 million in prepaid expenses and other current assets and accrued interest, partially offset by an increase of $2.7 million in accounts payable, accrued expenses and amount due to related party and a decrease of $0.3 million in unbilled grants receivable.

The $45.5 million increase in cash used in operating activities for the year ended December 31, 2021 compared to the year ended December 31, 2020 is primarily due to an increase in research and development expenses and general and administrative expenses as a result of advancing the development of posoleucel, ALVR106 and ALVR109 and operating as a public company, including increased personnel costs related to our increased headcount and our increased efforts towards identifying product candidates.

Investing Activities

Net cash provided by investing activities was $186.0 million for the year ended December 31, 2021, which was primarily due to the investment maturities of $262.6 million, partially offset by purchases of investments of $76.6 million.

Net cash used in investing activities was $169.5 million for the year ended December 31, 2020, which was primarily due to the purchase of investments of $300.3 million and the purchase of property and equipment of $0.2 million, partially offset by investment maturities of $131.0 million.

Financing Activities

Net cash provided by financing activities was $0.2 million for the year ended December 31, 2021 due to proceeds from the exercise of stock options.

Net cash provided by financing activities was $292.0 million for the year ended December 31, 2020 due to proceeds from our IPO, net of issuance costs paid.

Contractual Obligations

Operating Leases

Operating lease payments represent our commitments for future minimum rent made under non-cancelable leases for our corporate headquarters in Waltham, MA and for dedicated manufacturing suites for the manufacture of AlloVir products at a third party contract manufacturing organization, or CMO, and at ElevateBio Basecamp. The total payments for our operating lease obligations at

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December 31, 2021 is $36.1 million, of which $7.8 million is due in the next twelve months and the remaining payments are due over the terms of the respective leases. For additional details regarding our leases, see Note 5 to our consolidated financial statements.

Sponsored Research and Collaboration Agreements

In November 2020, we entered into a Research Collaboration Agreement (the “Research Agreement”) with BCM, effective on the same date, under which we agreed to pay BCM for performing certain research activities under the direction of Dr. Ann Leen commencing on January 1, 2021 and continuing for a three-year period thereafter. The Research Agreement requires the Company to make payments to BCM totaling approximately $2.0 million per year, for a total of approximately $6.0 million over the term of the Research Agreement. These payments are included in the table above.

Purchase and Other Obligations

We enter into contracts in the normal course of business with CROs and other third-party vendors for clinical trials and testing and manufacturing services, which can contain minimum purchase commitments or other noncancelable obligations. At December 31, 2021, our total noncancelable contractual obligations was $5.0 million, with $3.0 million due in the next twelve months. Most contracts do not contain minimum purchase commitments and are cancellable by us upon written notice. Payments due upon cancellation consist of payments for services provided or expenses incurred, including non-cancelable obligations of services provided up to one year after the date of cancellation. The amount and timing of such payments are not known.

We may incur potential contingent payments upon our achievement of clinical, regulatory and commercial milestones, as applicable, or we may be required to make royalty payments under license and grant agreements we have entered into with various entities pursuant to which we have in-licensed certain intellectual property. Due to the uncertainty of the achievement and timing of the events requiring payment under these agreements, the amounts to be paid by us are not fixed or determinable at this time and have not been included in the table above. See “Business—Sponsored Research, Collaboration and License Agreements” as well as Note 8 to our audited consolidated financial statements for a description of our license agreements.

Critical Accounting Policies and Significant Judgments and Estimates

Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP). The preparation of our consolidated financial statements and related disclosures requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, costs and expenses, and the disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and events and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in Note 2 to our audited consolidated financial statements appearing elsewhere in this report, we believe that the following accounting policies are those most critical to the judgments and estimates used in the preparation of our consolidated financial statements.

Stock-Based Compensation Expense

We grant restricted stock and stock options to employees, consultants, and directors.We measure stock-based compensation for employees and non-employees based on the grant date fair value of the stock-based awards, and recognize stock-based compensation cost for awards with performance conditions if and when we conclude that it is probable that the performance conditions will be achieved using a graded-vesting basis over the requisite service period. For awards with only a service condition, we expense stock-based compensation on a straight-line basis over the requisite employee service period, which is generally the vesting period of the respective award.

Stock-based compensation expense is classified in our consolidated statements of operations and comprehensive loss based on the function to which the related services are provided or in the same manner in which the grantee’s payroll costs are classified or in which the grantee’s service payments are classified.

Prior to our IPO, we estimated the fair value of each stock option grant and restricted common stock award. We consider the fair value of our common stock prior to the IPO, an input to the option pricing models, a critical accounting estimate.

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model, which requires inputs based on certain subjective assumptions, including the fair value of our common stock and assumptions we make for the expected stock price volatility, the expected term of the option, the risk-free interest rate for a period that approximates the expected term of the option and our expected dividend yield.

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The expected term of our options granted to employees and non-employees has been determined utilizing the “simplified” method for awards that qualify as “plain-vanilla” options, and we calculate the expected term of these awards using the midpoint between the vesting date and the contractual term. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. We have not paid, and do not anticipate paying, dividends on our common stock; therefore, the expected dividend yield is assumed to be zero.

Valuation of Common Stock

Prior to our IPO, the fair value of each restricted common stock award was estimated on the date of grant based on the fair value of our common stock on that same date. In estimating its stock price, the Company utilized a hybrid method consisting of an option-pricing method and a zero-value scenario. We determine the volatility for awards granted based on an analysis of reported data for a group of guideline companies that issued options with substantially similar terms. The expected volatility has been determined using a weighted-average of the historical volatility measures of this group of guideline companies. We expect to continue to do so until we have adequate historical data regarding the volatility of the trading price of our common stock on Nasdaq.

As there had been no public market for our common stock prior to the initial public offering of our common stock, the historical estimated fair value of our common stock has been approved by our board of directors, considering our most recently available independent third-party valuations of common stock. In accordance with the guidance outlined in the American Institute of Certified Public Accountants’ Accounting and Valuation Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation, a third-party valuation firm prepared valuations of our common stock using either an option pricing method, or OPM, or a hybrid method, both of which used market approaches to estimate our enterprise value.

In addition to considering the results of the third-party valuations, our board of directors considered various objective and subjective factors to determine the fair value of our common stock as of each grant date, which may be a date later than the most recent third-party valuation date, including:

the prices at which we sold preferred stock and the superior rights and preferences of the preferred stock relative to our common stock at the time of each grant;

the progress of our research and development efforts, including the status of clinical studies for our product candidates;

the lack of liquidity of our equity as a private company;

our stage of development and business strategy and the material risks related to our business and industry;

the achievement of enterprise milestones, including entering into collaboration and license agreements;

the valuation of publicly traded companies in the life sciences and biotechnology sectors, as well as recently completed mergers and acquisitions of peer companies;

any external market conditions affecting the biotechnology industry and trends within the biotechnology industry;

the likelihood of achieving a liquidity event for the holders of our preferred stock and holders of our common stock, such as an IPO, or a sale of our company, given prevailing market conditions; and

the analysis of IPOs and the market performance of similar companies in the biopharmaceutical industry.

There are significant judgments and estimates inherent in these valuations. The assumptions underlying these valuations represent management’s best estimates, which involve inherent uncertainties and the application of management judgment. As a result, if factors or expected outcomes change and we use significantly different assumptions or estimates, our stock-based compensation expense could be materially different.

Following the closing of our initial public offering, the fair value of our common stock is determined based on the quoted market price of our common stock.

Emerging Growth Company Status

On April 5, 2012, the Jumpstart Our Business Startups Act, or the JOBS Act, was enacted. The JOBS Act provides that, among other things, an “emerging growth company” can take advantage of an extended transition period for complying with new or revised accounting standards. This provision allows an emerging growth company to delay the adoption of some accounting standards until those standards would otherwise apply to private companies. As an emerging growth company, we have irrevocably elected to take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards and, as a result, we will comply with new or revised accounting standards on the relevant dates on which adoption of such standards is

117

required for non-emerging growth public companies on a case-by-case basis. As a result, our consolidated financial statements may not be comparable to companies that comply with new or revised accounting pronouncements as of public company effective dates.

We intend to rely on certain of the other exemptions and reduced reporting requirements provided by the JOBS Act. As an emerging growth company, we are not required to, among other things, (i) provide an auditor’s attestation report on our system of internal controls over financial reporting pursuant to Section 404(b), and (ii) comply with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis).

We will remain an emerging growth company until the earlier to occur of (1) the last day of our fiscal year (a) following the fifth anniversary of the closing of our IPO, (b) in which we have total annual gross revenues of at least $1.0 billion or (c) in which we are deemed to be a “large accelerated filer” under the rules of the SEC, which means the market value of our common shares that is held by non-affiliates exceeds $700 million as of the last day of our second quarter, and (2) the date on which we have issued more than $1.0 billion in non-convertible debt during the prior three-year period.

We are also a “smaller reporting company” meaning that the market value of our stock held by non-affiliates is less than $700 million and our annual revenue was less than $100 million during the most recently completed fiscal year. We may continue to be a smaller reporting company if either (i) the market value of our stock held by non-affiliates is less than $250 million or (ii) our annual revenue was less than $100 million during the most recently completed fiscal year and the market value of our stock held by non-affiliates is less than $700 million. If we are a smaller reporting company at the time we cease to be an emerging growth company, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies. Specifically, as a smaller reporting company we may choose to present only the two most recent fiscal years of audited financial statements in our Annual Report on Form 10-K and, similar to emerging growth companies, smaller reporting companies have reduced disclosure obligations regarding executive compensation.

Recently Issued Accounting Pronouncements

A description of recent issued accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2 to our consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K.

118

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

As a smaller reporting company, we are not required to disclose this item.

Item 8. Financial Statements and Supplementary Data.

Our consolidated financial statements, together with the independent registered public accounting firm report thereon, are presented beginning on page F-1 of this Annual Report on Form 10-K.

Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

None.

Item 9A. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

We maintain “disclosure controls and procedures,” as defined in Rule 13a-15(e) and Rule 15d-(e) under the Exchange Act that are designed to ensure that information required to be disclosed by a company in the reports it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to our management, including our principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2021. Based on the evaluation of our disclosure controls and procedures as of December 31, 2021, our Chief Executive Officer and our Chief Financial Officers concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(e) and Rule 15d-(e) under the Exchange Act that occurred during the period covered by this Annual Report on Form 10-K that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

This report does not include a report of management’s assessment regarding internal control over financial reporting or an attestation report of our registered public accounting firm due to a transition period established by the rules of the SEC for newly public companies.

As a result of the COVID-19 pandemic, certain employees began working remotely in March 2020. Notwithstanding these changes to the working environment, we have not identified any material changes in our internal control over financial reporting. We will continue to monitor and assess the COVID-19 situation to determine any potential impact on the design and operating effectiveness of our internal controls over financial reporting.

Inherent Limitations on Effectiveness of Controls

Our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.

Item 9B. Other Information.

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

Not Applicable.

119

PART III

Item 10. Directors, Executive Officers and Corporate Governance.

The information required by this Item 10 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2022 Annual Meeting of the Stockholders and is included herein by reference.

Item 11. Executive Compensation.

The information required by this Item 11 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2022 Annual Meeting of the Stockholders and is included herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by this Item 12 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2022 Annual Meeting of the Stockholders and is included herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information required by this Item 13 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2022 Annual Meeting of the Stockholders and is included herein by reference.

Item 14. Principal Accounting Fees and Services.

Our independent public accounting firm is Deloitte & Touche LLP, Boston, MA, USA, PCAOB Auditor Firm ID 34.

The information required by this Item 14 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2022 Annual Meeting of the Stockholders and is included herein by reference.

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PART IV

Item 15. Exhibits, Financial Statement Schedules.

(1) Consolidated Financial Statements

The following documents are included this Annual Report on Form 10-K:

Report of Independent Registered Public Accounting Firm

Consolidated Financial Statements

Consolidated Balance Sheets

Consolidated Statements of Operations and Comprehensive Loss

Consolidated Statements of Convertible Preferred Stock and Changes in Stockholders’ Equity (Deficit)

Consolidated Statements of Cash Flows

Notes to Consolidated Financial Statements

(2) Financial Statement Schedules

All financial statement schedules have been omitted because they are not applicable, not required, or the information required is shown in the consolidated financial statements or the notes thereto.

(3) Exhibits

The exhibits required by Item 601 of Regulation S-K and Item 15(b) of this Annual Report on Form 10-K are listed in the Exhibit Index below. The exhibits listed in the Exhibit Index are incorporated by reference herein.

Exhibit Index

ExhibitNumber Description

10.4*# Senior Executive Cash Bonus Plan

121

122

21.1* List of Subsidiaries of Registrant.

24.1* Power of Attorney (included on signature page).

101.INS Inline XBRL Instance Document

101.SCH Inline XBRL Taxonomy Extension Schema Document

101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document

101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

* Filed herewith.

# Indicates a management contract or any compensatory plan, contract or arrangement.

† Portions of this exhibit (indicated by asterisks) have been omitted in accordance with the rules of the Securities and Exchange Commission.

+ Schedules to the Sublease and Lease have been omitted pursuant to Item 601(b)(2) of Regulation S-K because they contain information that is both (i) not material and (ii) of the type that the registrant treats as private and confidential. The registrant will furnish copies of any such schedules to the U.S. Securities and Exchange Commission upon request.

16. Form 10-K Summary

None.

123

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

ALLOVIR, INC.

Date: February 10, 2022 By: /s/ Diana Brainard

Diana Brainard

Chief Executive Officer and Director(Principal Executive Officer)

POWER OF ATTORNEY

Each person whose individual signature appears below hereby authorizes and appoints Diana Brainard with full power of substitution and resubstitution and full power to act as his or her true and lawful attorney-in-fact and agent to act in his or her name, place and stead and to execute in the name and on behalf of each person, individually and in each capacity stated below, and to file any and all amendments to this Annual Report on Form 10-K and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing, ratifying and confirming all that said attorney-in-fact and agent or her substitute or substitutes may lawfully do or cause to be done by virtue thereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated.

Signature Title Date

Diana Brainard

Vikas Sinha

/s/ David Hallal Executive Director February 10, 2022

David Hallal

/s/ Jeffrey Bornstein Director February 10, 2022

Jeffrey Bornstein

/s/ Malcolm Brenner, MD, PhD Director February 10, 2022

Malcolm Brenner, MD, PhD

/s/ Ansbert Gadicke, MD Director February 10, 2022

Ansbert Gadicke, MD

/s/ Morana Jovan-Embiricos, PhD Director February 10, 2022

Morana Jovan-Embiricos, PhD

/s/ Juan F. Vera, MD Director February 10, 2022

Juan F. Vera, MD

/s/ John Wilson Director February 10, 2022

John Wilson

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INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm (PCAOB ID No. 34) F-2

Consolidated Balance Sheets F-3

Consolidated Statements of Operations and Comprehensive Loss F-4

Consolidated Statements of Cash Flows F-6

Notes to Consolidated Financial Statements F-7

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of AlloVir, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of AlloVir, Inc. and subsidiaries (the “Company”) as of December 31, 2021 and 2020, the related consolidated statements of operations and comprehensive loss, convertible preferred stock and changes in stockholders’ equity (deficit), and cash flows, for each of the two years in the period ended December 31, 2021, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2021, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 10, 2022

We have served as the Company’s auditor since 2019.

F-2

ALLOVIR, INC.

CONSOLIDATED BALANCE SHEETS

December 31,

(in thousands, except share and per share amounts) 2021 2020

Assets

Current assets:

Prepaid expenses and other current assets 5,178 4,543

Restricted cash 852 —

Property and equipment, net 1,549 812

Operating lease right-of-use assets 29,743 8,692

Liabilities and stockholders’ equity

Current liabilities:

Income tax payable 1,007 —

Operating lease liability, current 6,591 3,229

Amount due to related party 1,742 572

Operating lease liability, long term 23,475 5,463

Stockholders’ equity:

Accumulated other comprehensive loss (155 ) (112 )

Total liabilities and stockholders’ equity $ 286,594 $ 370,821

The accompanying notes are an integral part of these consolidated financial statements.

F-3

ALLOVIR, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

Years Ended December 31,

(in thousands, except share and per share amounts) 2021 2020

Operating expenses:

Total other income (loss), net:

Other (loss) income, net (2,452 ) 195

Income tax expense 1,007 —

Net loss per share — basic and diluted $ (2.74 ) $ (2.59 )

Comprehensive loss:

Other comprehensive income (loss), net of tax:

Unrealized gain (loss) on available-for-sale securities 1 (90 )

Foreign currency translation adjustment (44 ) (90 )

Total other comprehensive loss (43 ) (180 )

The accompanying notes are an integral part of these consolidated financial statements.

F-4

ALLOVIR, INC.

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND CHANGES IN STOCKHOLDERS’ EQUITY (DEFICIT)

Stock-based compensation — — — — — — 9,429 — — 9,429

Unrealized loss on available-for-sale securities — — — — — — — (90 ) — (90 )

Foreign currency translation adjustment — — — — — — — (90 ) — (90 )

Stock-based compensation — — — — — — 43,975 — — 43,975

Unrealized gain on available-for-sale securities — — — — — — — 1 — 1

Foreign currency translation adjustment — — — — — — — (44 ) — (44 )

The accompanying notes are an integral part of these consolidated financial statements.

F-5

ALLOVIR, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

Years Ended December 31,

Cash flows from operating activities

Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation and amortization 189 73

Non-cash lease expense 928 —

Amortization and accretion of discounts on short-term investments 1,197 502

Changes in operating assets and liabilities:

Unbilled grant receivables — 298

Prepaid expenses and other current assets (1,241 ) (3,867 )

Other assets (1,102 ) —

Income tax payable 1,007 —

Accounts payable, accrued expenses and amount due to related party 20,290 2,726

Net cash used in operating activities (106,319 ) (60,811 )

Cash flows from investing activities

Purchase of property and equipment (26 ) (235 )

Net cash provided by (used in) investing activities 185,983 (169,497 )

Cash flows from financing activities

Payment of initial public offering costs — (3,474 )

Proceeds from exercise of stock options 232 —

Net cash provided by financing activities 232 291,975

Net increase in cash, cash equivalents, and restricted cash 79,852 61,577

Cash, cash equivalents, and restricted cash at end of period $ 202,513 $ 122,661

Non-cash investing and financing activities

Unrealized gain (loss) on available-for-sale securities $ 1 $ (90 )

Years Ended December 31,

Restricted cash 852 —

Total cash, cash equivalents, and restricted cash $ 202,513 $ 122,661

The accompanying notes are an integral part of these consolidated financial statements.

F-6

ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Nature of the Business

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.

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.

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.

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.

On August 8, 2019, AlloVir formed AlloVir International Designated Activity Company (“AlloVir International”), a wholly-owned subsidiary established in Ireland.

On October 9, 2019, AlloVir Securities Corporation was incorporated as a Massachusetts Security Corporation, a wholly-owned subsidiary of AlloVir.

On November 10, 2019, AlloVir International formed AlloVir Italia S.R.L. (“AlloVir Italia”), a wholly-owned subsidiary in Italy.

On August 3, 2020, the Company completed an initial public offering (“IPO”) in which the Company issued and sold 18,687,500 shares of its common stock, at a public offering price of $17.00 per share, resulting in gross proceeds of $317.7 million. The Company received $292.0 million in net proceeds after deducting underwriting discounts and commissions and offering costs.

Upon the closing of the IPO, all of the then-outstanding shares of convertible preferred stock automatically converted into 39,859,139 shares of common stock at the applicable conversion ratio then in effect. Subsequent to the closing of the IPO, there were no shares of convertible preferred stock outstanding.

On July 20, 2021 AlloVir Inc formed AlloVir U.S., Inc. (“AlloVir U.S.”), a wholly-owned subsidiary of AlloVir.

ElevateBio LLC

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

F-7

ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

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.

Going Concern

In accordance with Accounting Standards Update (“ASU”) 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (Subtopic 205-40), 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.

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.

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 $172.0 million for the year ended December 31, 2021 and $69.8 million for the year ended December 31, 2020. In addition, at December 31, 2021, the Company had an accumulated deficit of $297.1 million. The Company expects to continue to generate operating losses for the foreseeable future.

The Company believes that its $201.7 million of cash and cash equivalents and $46.5 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.

COVID-19 Considerations

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.

F-8

ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

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.

2. Summary of Significant Accounting Policies

Basis of Presentation and Consolidation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).The consolidated financial statements include the Company’s accounts and those of its wholly-owned subsidiaries. All intercompany accounts, transactions and balances have been eliminated in consolidation.

Segment Information

Operating segments are defined as components of an enterprise for which separate and discrete information is available for evaluation by the chief operating decision-maker in deciding how to allocate resources and assess performance. The Company has one operating segment. The Company’s singular focus is the research, development and commercialization of off-the-shelf VST therapies to prevent and treat severe viral-associated diseases. The Company’s chief operating decision maker, its Chief Executive Officer, manages the Company’s operations on a consolidated basis for the purpose of allocating resources. All of the Company’s long-lived assets are held in the United States.

Use of Estimates

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.

Cash and Cash Equivalents

Cash and cash equivalents are short-term, highly liquid investments with original maturities of three months or less at the date of purchase. Investments qualifying as cash equivalents primarily consist of money market funds, corporate bonds and commercial paper.

Short-Term Investments

Short-term investments consist of U.S. treasury securities, corporate bonds and commercial paper classified as available-for-sale that have maturities of less than one year. Available-for-sale securities are carried at fair value, with the unrealized gains and losses reported in other comprehensive income (loss). The amortized cost of debt securities in this category is adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization or accretion is included in "other income (loss), net".

The cost of securities sold is based on the specific identification method. Interest on debt securities classified as available-for-sale are included in interest income. To determine whether an other-than-temporary impairment exists, the Company considers whether it has the ability and intent to hold the investment until a market price recovery, and whether evidence indicating the recoverability of the cost of the investment outweighs evidence to the contrary. There were no individual securities with impairments at December 31, 2021 and 2020.

Restricted Cash

Cash accounts with any type of restriction are classified as restricted cash. The Company has restricted cash deposits with a bank, which serve as collateral for a letter of credit issued to the landlord of the Company’s leased Waltham facility for a security deposit. The Company classified this amount as non-current restricted cash in the accompanying condensed consolidated balance sheet at December 31, 2021. There was no restricted cash balance at December 31, 2020.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Property and Equipment, Net

The Company records property and equipment at cost and recognizes depreciation using the straight-line method over the estimated useful lives of the respective assets, as follows:

Asset category Estimated useful life

Computer equipment 3 years

Laboratory equipment 5 years

The Company periodically evaluates whether events and circumstances have occurred that may warrant revision of the estimated useful life of property and equipment. Expenditures for repairs and maintenance of assets are expensed as incurred. Upon retirement or sale, the cost of assets disposed and the corresponding accumulated depreciation are removed from the related accounts and any resulting gain or loss is reflected in the results of operations. Construction in progress is not depreciated until it is placed in service. Property and equipment to be disposed of are carried at fair value less costs to sell.

Impairment of Long-Lived Assets

The Company accounts for long-lived assets in accordance with ASC Topic 360, Property, Plant, and Equipment (“ASC 360”). ASC 360 requires companies to: (i) recognize an impairment loss only if the carrying amount of a long-lived asset is not recoverable based on its undiscounted future cash flows and (ii) measure an impairment loss as the difference between the carrying amount and the fair value of the asset.

The Company tests long-lived assets to be held and used, including property and equipment, for impairment whenever events or changes in circumstances indicate that the carrying amount of assets or asset groups may not be fully recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. In the event that such cash flows are not expected to be sufficient to recover the carrying amount of the assets, the assets are written-down to their fair values. The Company has not recognized any impairment losses during the years ended December 31, 2021 and 2020.

Fair Value Measurements

ASC Topic 820, Fair Value Measurement (“ASC 820”), establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances.

ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a three-tier fair value hierarchy that distinguishes among the following:

Level 1 – Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access.

Level 2 – Valuations based on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and models for which all significant inputs are observable, either directly or indirectly.

Level 3 – Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The Company’s financial instruments include cash equivalents, short-term investments, accounts payable, amount due to related party and accrued expenses. Certain of the Company’s financial assets, including cash equivalents and short-term investments, have

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

been initially valued at the transaction price, and subsequently revalued at the end of each reporting period, utilizing third-party pricing services or other observable market data. The pricing services utilize industry standard valuation models and observable market inputs to determine value.

Other financial instruments, including accounts payable, amount due to related party and accrued expenses, are carried at cost, which approximate fair value due to the short duration and term to maturity.

Deferred Offering Costs

The Company capitalizes certain legal, professional accounting and other third-party fees that are directly associated with in-process equity financings as deferred offering costs until such financings are consummated. After consummation of the equity financing, these costs are presented in the consolidated balance sheets as a direct reduction from the carrying amount of the respective equity instrument issued. Should an in-process equity financing be abandoned, the deferred offering costs will be expensed immediately as a charge to operating expenses in the consolidated statements of operations and comprehensive loss. Upon closing the IPO in August 2020, deferred offering costs were derecognized and recorded against the IPO proceeds as a debit to additional paid-in capital. At December 31, 2021 and 2020, the Company had no deferred offering costs.

Cloud Computing Arrangements

The Company capitalizes certain implementation costs for internal-use software incurred in a cloud computing agreement that is a service contract. Eligible costs associated with cloud computing arrangements, such as the implementation costs incurred to develop or obtain software business applications used in the normal course of business, are capitalized in accordance with ASC 350. Capitalization ceases at the point the software is substantially complete and ready for its intended use, and after all substantial testing is completed. Amortization is recorded on a straight-line basis over the expected useful life of three years of the internal-use software cost in the same line item in the statement of operations and comprehensive loss as the expense for fees for the associated cloud computing arrangement. Amortization expense associated with the Company's cloud computing arrangements has been recognized in the amount of $0.1 million and $0 during the years ended December 31, 2021 and 2020.

Other Income (Loss), Net

The Company records interest expense, investment amortization and accretion and other government grants, not considered customers under ASC 606, in “other income (loss), net” over the same period in which the qualifying costs are incurred. Proceeds received from other government grants prior to the costs being incurred or the conditions of the award being met are recognized as deferred grant income until the services are performed and the conditions of the grant are met. To the extent that qualifying costs have been incurred prior to receipt of funds, the Company records an unbilled grant receivable upon recognition of those expenses.

Research and Development Costs

Research and development costs are charged to expense as incurred. Research and development expenses are comprised of costs incurred in performing research and development activities, including personnel-related costs, stock-based compensation, facilities, research-related overhead, clinical trial costs, contracted services, research-related manufacturing, license fees and other external costs. The Company accounts for nonrefundable advance payments for goods and services that will be used in future research and development activities as expenses when the services have been performed or when the goods have been received.

Accrued Research and Development Expenses

The Company has entered into various research and development contracts. The payments under these contracts are recorded as research and development expenses as incurred. The Company records accrued liabilities for estimated ongoing research costs. When evaluating the adequacy of the accrued liabilities, the Company analyzes progress of the studies, including the phase or completion of events, invoices received and contracted costs. Judgements and estimates are made in determining the accrued balances at the end of any reporting period. Actual results could differ from the Company’s estimates. The Company’s historical accrual estimates have not been materially different from the actual costs.

Research and Development Grants

Grants are recognized as a receivable at their fair value when there is reasonable assurance that the grant will be received and the Company will comply with all the attached conditions. Grants receivable are recognized on a systematic basis as income over the periods

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

necessary to match them with the related costs which they are intended to compensate. Grants that have been earned, other than those grants that fall under ASC 606, where the Company determined that the grantor is a customer, are presented in the consolidated statements of operations and comprehensive loss as “other income (loss), net”.

Stock-Based Compensation Expense

The Company grants restricted stock and stock options to employees, consultants and directors.The Company recognizes stock-based compensation cost for awards with performance conditions if and when it concludes that it is probable that the performance conditions will be achieved. For awards with only a service condition, the Company expenses stock-based compensation on a straight-line basis over the requisite employee service period or for grants issued with performance conditions, on a graded-vesting basis over the requisite employee service period. Awards for employees and non-employees are accounted for similarly. The Company records stock-based compensation expense associated with grants of restricted stock and stock options in the consolidated statements of operations and comprehensive loss based on their estimated fair value at the date of the grant. The Company classifies stock-based compensation expense in its consolidated statements of operations and comprehensive loss in the same manner in which the grantee’s payroll costs are classified or in which the grantee’s service payments are classified. Forfeitures are accounted for as they occur.

The fair value of each stock option grant is estimated on the date of grant using the Black‐Scholes option pricing model. As there was no public market for the Company’s common stock prior to the initial public offering of its common stock in August 2020, the estimated fair value of common stock was determined by the Company’s board of directors as of the date of each option grant, with input from management, considering third-party valuations of its common stock, as well as the Company’s board of directors’ assessment of additional objective and subjective factors that it believed were relevant, and which may have changed from the date of the most recent third-party valuation through the date of the grant. These third-party valuations were performed in accordance with the guidance outlined in the American Institute of Certified Public Accountants’ Accounting and Valuation Guide, Valuation of Privately Held Company Equity Securities Issued as Compensation. Following the closing of the initial public offering, the fair value of the Company’s common stock is determined based on the quoted market price of common stock. The Company also lacks company‐specific historical and implied volatility information for its stock. The Company estimates its expected stock price volatility based on the historical volatility of publicly traded peer companies and expects to continue to do so until such time as it has adequate historical data regarding the volatility of its own traded stock price. The expected term of the Company’s stock options has been determined utilizing the “simplified” method. The “simplified” method estimates the expected term of stock options as the mid‐point between the weighted average time to vesting and the contractual maturity. The risk‐free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. There is no expected dividend yield since the Company has never paid cash dividends on common stock and does not expect to pay any cash dividends in the foreseeable future.

Net Loss per Share

Basic and diluted net loss per share is determined by dividing net loss by the weighted‐average common stock outstanding during the period. Since we have incurred operating losses for all periods presented, outstanding stock options and unvested restricted common stock have been excluded from the calculation because their effects would be anti‐dilutive. Therefore, the weighted‐average shares used to calculate both basic and diluted loss per share are the same.

Income Taxes

The Company accounts for income taxes under the asset and liability method in accordance with ASC 740, Income Taxes. Under this method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted rates in effect for the year in which these temporary differences are expected to be recovered or settled. Valuation allowances are provided if based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Management believes that it is more likely than not that all deferred tax assets will not be realized.

The Company recognizes liabilities for potential tax payments to various tax authorities related to uncertain tax positions. The liabilities are based on a determination of whether and how much of a tax benefit taken by the Company in its tax filing is more likely than not to be realized following resolution of any potential contingencies present related to the tax benefit. Potential interest and penalties associated with such uncertain tax positions, if any, are recorded as components of income tax expense.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company assesses its income tax positions and records tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances and information available as of the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, the Company records the largest amount of tax benefit with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. For those income tax positions where it is not more likely than not that a tax benefit will be sustained, the Company does not recognize a tax benefit in the consolidated financial statements.

Concentration of Credit Risk and Off-Balance Sheet Risk

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.

At December 31, 2021 and 2020, the Company had no off-balance sheet risk.

Foreign Exchange

As a result of certain intercompany transactions in September 2021, the Company has determined that the functional currency for AlloVir International and AlloVir Italia is the U.S. Dollar (“USD”). Prior to this determination, the functional currency of AlloVir International and Allovir Italia was the Euro; however, due to the immateriality of the transactions that occurred at AlloVir International and AlloVir Italia previously, the impact of the determination for the transition from Euro to USD is not material and is not considered a change in accounting principle for reporting purposes. Reporting currency has been and remains the USD.

Prior to the change in functional currency for AlloVir International and AlloVir Italia, assets and liabilities were translated into USD at the exchange rate in effect on the balance sheet date. Equity balances, other than retained earnings, were translated at historical exchange rates. Income items and expenses were translated at the average exchange rate in effect during the period. Unrealized translation gains and losses were recorded as a cumulative translation adjustment in the consolidated balance sheets.

Transactions in foreign currencies are remeasured into the functional currency of the relevant subsidiaries at the exchange rate in effect at the date of the transaction. Any monetary assets and liabilities arising from these transactions are translated into the functional currency at exchange rates in effect at the balance sheet date or on settlement. Resulting gains and losses are recorded in "other income (loss), net" within the consolidated statements of operations and comprehensive loss.

Comprehensive Loss

Comprehensive loss is defined as a change in equity of a business enterprise during a period, resulting from transactions from non-owner sources. Comprehensive loss includes net loss and certain changes in stockholder’s deficit that are excluded from net loss. The Company had a net change in available-for-sale securities and a foreign currency translation adjustment during the years ended December 31, 2021 and 2020, which met the criteria as other comprehensive income and, therefore, the Company’s comprehensive loss includes unrealized gains (losses) on those available-for-sale securities and foreign currency translation adjustments from foreign subsidiaries prior to the change in functional currency for AlloVir International and AlloVir Italia

Leases

Effective January 1, 2019, the Company adopted and accounts for its leases under ASC 842, Leases (“ASC 842”), using the modified retrospective transition approach, as applied to the earliest comparative period presented. At the inception of an arrangement, the Company determines whether the arrangement is or contains a lease. Leases with a term greater than one year are recognized on the consolidated balance sheet as a right-of-use (“ROU”) asset and current and non-current lease liabilities, as applicable. The Company has made an accounting policy election, known as the short-term lease recognition exemption, which allows the Company to not recognize ROU assets and lease liabilities that arise from short-term leases (12 months or less) for any class of underlying asset. The Company typically only includes an initial lease term in its assessment of a lease arrangement. Options to renew or options to cancel a lease are not included in the Company’s assessment unless there is reasonable certainty that the Company will renew or will not cancel, respectively. The Company monitors its leases on a quarterly basis.

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ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Operating lease liabilities and their corresponding ROU assets are recorded based on the present value of future lease payments over the expected remaining lease term. Lease cost for operating leases is recognized on a straight-line basis over the lease term as an operating expense. Certain adjustments to the ROU asset may be required for items such as lease prepayments or incentives received. The interest rate implicit in lease contracts is typically not readily determinable. As a result, the Company utilizes its incremental borrowing rate, which reflects the fixed rate at which the Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, in a similar economic environment.

The Company has elected to account for the lease and non-lease components together for all existing classes of underlying assets.

Subsequent Events

The Company evaluates events occurring after the date of our accompanying consolidated balance sheets for potential recognition or disclosure in our consolidated financial statements. The Company did not identify any material subsequent events requiring adjustment to our accompanying consolidated financial statements (recognized subsequent events). Those items requiring disclosure (unrecognized subsequent events) in the consolidated financial statements have been disclosed accordingly. Refer to Note 17 for further details.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”), or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed, the impact of recently issued standards that are not yet effective will not have a material impact on the Company’s consolidated financial statements upon adoption. Under the Jumpstart Our Business Startups Act of 2012, as amended (the “JOBS Act”), the Company meets the definition of an emerging growth company and has elected the extended transition period for complying with certain new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. As noted below, certain new or revised accounting standards were early adopted.

Recently Adopted Accounting Pronouncements

In December 2019, the FASB issued ASU 2019-12 – Income Taxes (Topic 740) (“ASU 2019-12”), which removes certain exceptions from the guidance and simplifies the accounting for income taxes in certain areas. The Company adopted ASU 2019-12 on January 1, 2021. There was no material impact to the Company’s consolidated financial statements as a result of adopting this new standard.

Recently Issued Accounting Pronouncements Not Yet Adopted

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 significantly changes the impairment model for most financial assets and certain other instruments. ASU 2016-13 will require immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets, which will generally result in earlier recognition of allowances for credit losses on loans and other financial instruments. ASU 2016-13 is effective for the Company’s fiscal year beginning after December 15, 2022 and subsequent interim periods. The adoption of this standard is not expected to have a material impact on the Company’s consolidated financial statements and related disclosures.

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ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

3. Short-Term Investments

The following tables summarize the amortized cost and estimated fair value of the Company’s marketable securities, which are considered to be available-for-sale investments and were included in short-term investments on the consolidated balance sheets:

(in thousands) AmortizedCost UnrealizedGains UnrealizedLosses FairValue

U.S. government treasury securities $ 25,092 $ — $ (20 ) $ 25,072

Marketable securities:

(in thousands) AmortizedCost UnrealizedGains UnrealizedLosses FairValue

Certain short-term debt securities with original maturities of less than three months are included in cash and cash equivalents on the consolidated balance sheets and are not included in the tables above. At December 31, 2021 and 2020, all investments had contractual maturities within one year.

4. Fair Value Measurements

The following tables present information about the Company’s financial assets measured at fair value on a recurring basis:

(in thousands) Level 1 Level 2 Level 3 Total

Cash equivalents:

Marketable securities:

Short-term investments:

U.S. government treasury securities $ 25,072 $ — $ — $ 25,072

Marketable securities:

(in thousands) Level 1 Level 2 Level 3 Total

Cash equivalents:

U.S. government treasury securities 39,998 — — 39,998

Short-term investments:

U.S. government treasury securities $ 233,663 $ — $ — $ 233,663

During the years ended December 31, 2021 and 2020, there were no transfers between levels. The Company classifies its money market fund and U.S. government treasury securities as Level 1 assets under the fair value hierarchy, as these assets have been valued using quoted market prices in active markets without any valuation adjustment. The Company classifies its marketable securities

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ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(corporate bonds and commercial paper) as Level 2 assets under the fair value hierarchy, as these assets have pricing inputs that are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined using models or other valuation methodologies.

The carrying amounts of prepaid expenses and other current assets, accounts payable, amount due to related party and accrued expenses approximate their fair values due to the short-term nature of these assets and liabilities.

5. Leases

Short-term leases

The Company leases an office space in Houston, Texas under an operating lease that expires in September 2022. The Company also sub-leased, on a month-to-month basis, a portion of ElevateBio's office space in Cambridge, Massachusetts, which terminated effective January 31, 2022. During the years ended December 31, 2021 and 2020, total short-term lease expense recognized was $0.4 million (of which approximately $37.5 thousand relates to non-lease costs, such as utilities and cleaning), and $0.4 million (of which approximately $58.2 thousand relates to non-lease costs such as utilities and cleaning), respectively.

In April 2021, the Company entered into a Statement of Work (“SOW”) with a third-party supplier under the Development and Manufacturing Services Agreement (“DMS Agreement”) made effective in July 2019. This SOW is to lease a dedicated manufacturing suite for the manufacture of AlloVir’s products at the facility. On July 30, 2021, the Company provided a notification to reduce capacity to the third-party supplier which terminates this lease agreement in the first quarter of 2022. During the years ended December 31, 2021 and 2020, total lease expense recognized under this SOW was $0.5 million and $0, respectively.

Operating leases

Operating lease liabilities and their corresponding right-of-use ("ROU") assets are recorded based on the present value of future lease payments over the expected remaining lease term. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of the lease payments over the lease term. The Company uses an incremental borrowing rate based on information available at the commencement date in determining the present value of lease payments. The incremental borrowing rate represents the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term at an amount equal to the lease payments in a similar economic environment. The Company estimates this rate based on prevailing market conditions, comparable company and credit analysis, the impact of collateralization, and the term of each of the Company’s lease agreements.

In March 2019, the Company entered into an interim services agreement which ultimately led to a DMS Agreement with a third-party supplier in July 2019. The DMS Agreement specifies a dedicated manufacturing suite for the manufacture of AlloVir’s products at the facility. The DMS Agreement will expire upon the later of: 1) two years from the Effective Date, or July 2021, and 2) the completion of services under all SOWs. The term may be extended by agreement of the parties for additional two-year periods upon written notice to the supplier at least 30 days prior to expiration of the then-current term.The DMS Agreement (or any individual SOW) may be terminated earlier by AlloVir at any time by providing 190 days’ notice. The Company has extended the DMS Agreement, and estimates that early termination is not reasonably certain to occur. The total estimated lease term of approximately 4.25 years expires in July 2023. In March 2019, at the inception of this lease, the Company recorded a ROU asset and lease liability of $6.9 million. In September 2019, the Company executed a SOW for another dedicated manufacturing suite under the DMS Agreement with substantially the same terms as the original SOW. In September 2019, at the inception of this lease, the Company recorded a ROU asset and lease liability of $6.3 million. The SOW calls for a fixed monthly payment through July 2023, with additional two-year renewal options. The total estimated lease term of approximately 3.75 years expires in July 2023. The use of these manufacturing suites qualify as a lease under ASC 842, as it includes an identified asset for exclusive use by the Company at its direction.

In May 2020, the Company entered into a new Development and Manufacturing Services Agreement (“2020 DMS Agreement”) with ElevateBio BaseCamp, Inc. and signed a SOW in November 2020. The 2020 DMS Agreement and related SOW contained an embedded lease for a dedicated manufacturing suite for the manufacture of AlloVir’s products at the facility because the Company directs how and for what purpose the suite is used for and obtains substantially all of the economic benefit of the suite. In exchange for this dedicated manufacturing suite, AlloVir will pay the supplier a monthly fixed suite utilization fee, and other related fixed costs, totaling $3.2 million over the two-year lease term (one year lease with a one-year renewal option), that covers costs associated with reserving capacity for AlloVir, as well as cleaning services, utilities, handling and maintenance of the manufacturing suite. The Company estimates that the exercise of the one-year renewal option is reasonably certain to occur, and the Company is reasonably certain that it will not exercise its early termination right, providing for a total estimated lease term of two years expiring in January 2023. As part of

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ALLOVIR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

the arrangement, there were also variable costs for materials, non-fixed batch payments, storage, knowledge and tech transfer and other common area maintenance fees that were not included in the measurement of the lease. The lease of the facility was determined to be classified as an operating lease and commenced in February 2021, the point at which the new facility area was substantially complete and available for use by the Company. Accordingly, at inception, the Company recorded a ROU asset of $3.1 million and a lease liability of $2.5 million. The Company prepaid $0.6 million of the suite utilization fee, which was reclassified from prepaid expense to the ROU asset upon lease commencement.

In September 2021, the Company entered into a new lease agreement with BP Bay Colony LLC and a sublease with AMAG Pharmaceuticals Inc. for the lease of property in Waltham, Massachusetts (collectively, the "Waltham leases"). The space identified under the Waltham leases is intended for general office space, research and development, laboratory use, and light manufacturing. The Waltham leases have been classified as operating leases and commenced in September 2021. At the inception date, the Company has recorded an ROU asset and lease liability of $6.0million for the lease and a ROU asset and lease liability of $17.3 million for the sublease based on a July 30, 2030 end date for the Waltham leases. As part of the arrangement, there were also variable costs for common area maintenance fees that were not included in the measurement of the lease. The agreement also provides a $3.1 million tenant improvement allowance which is to be reimbursed by the landlord over the duration of the first two years of the Waltham leases. As of December 31, 2021no allowances have been used and therefore no reduction to the tenant improvement allowance has been made. The Company will monitor the timing of the reimbursements and adjust the ROU asset and lease liability at such time. The Company has the option to renew the leased space for an additional one time period of five years with written notice from the Company. As of December 31, 2021, the Company has no reasonable certainty that this option to extend will be exercised.

Maturities of operating lease liabilities at December 31, 2021 are as follows (in thousands):

Total lease payments 36,053

Total lease liability $ 30,066

Lease liability – current $ 6,591

Lease liability – long-term $ 23,475

Total lease costs were $6.2 million and $4.0 million for the years ended December 31, 2021 and 2020, respectively. Cash paid for operating leases was $5.2 million and $3.6 million for the year ended December 31, 2021 and 2020, respectively. The Company’s total variable non-lease costs, such as materials, non-fixed batch payments, storage, tech transfer and other common area maintenance fees, related to the operating leases was $14.5 million and $4.5 million for the years ended December 31, 2021 and 2020, respectively. The weighted average remaining lease term is 7.17 years at December 31, 2021. The weighted average discount rate is 4.96%.

6. Property and Equipment, Net

Property and equipment, net consisted of the following:

December 31,

Computer equipment 435 —

Source: SEC EDGAR (public domain) · 10-K for the period ended 2021-12-31, filed 2022-02-10 · accession 0000950170-22-001075

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