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AURA US Equity

Aura Biosciences, Inc.Health Care · Biological Products, (No Diagnostic Substances) · CIK 1501796 · FY ends Dec 31
$7.79
-0.37 (-4.53%)
USD · as of 2026-08-19 · marketstack

AURA · 10-K · period ended 2023-12-31

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filed 2024-03-27 · EDGAR original ↗

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

The following discussion and analysis should be read in conjunction with the audited consolidated financial statements and related notes included elsewhere in this Annual Report. This discussion and analysis and other parts of this Annual Report contain forward-looking statements based upon current beliefs, plans and expectations that involve risks, uncertainties and assumptions, such as statements regarding our plans, objectives, expectations, intentions and projections. Our actual results and the timing of selected events could differ materially from those anticipated in these forward-looking statements as a result of several factors, including those set forth under Part I, Item 1A, “Risk Factors” and elsewhere in this Annual Report. You should carefully read the “Risk Factors” section of this Annual Report to gain an understanding of the important factors that could cause actual results to differ materially from our forward-looking statements. Please also see the section titled “Special Note Regarding Forward-Looking Statements.”

Overview

We are a clinical-stage biotechnology company developing precision immunotherapies to treat a range of solid tumors designed to preserve the function of organs afflicted with cancer. Our lead candidate bel-sar is in late-stage clinical development for the treatment of patients with primary choroidal melanoma, and other ocular oncology indications as well as in early-stage clinical development in bladder cancer. There is significant unmet need for novel treatments for patients with choroidal melanoma, given the limitations of the current SoC and patient reluctance to undergo radiotherapy in the form of either plaque brachytherapy or proton beam therapy, both highly-invasive therapies that result in significant vision loss, and potential blindness. Enucleation, or surgical removal of the affected eye is another treatment option for patients with choroidal melanoma, in which patients lose all vision without the possibility of vision restoration.

We are evaluating the safety and efficacy of bel-sar as a potential vision-sparing therapy in our ongoing global Phase 3 CoMpass trial for the first-line treatment of adult patients with early-stage choroidal melanoma. Moreover, we intend to assess the safety and efficacy of bel-sar in treating a range of other solid tumors, including bladder cancer as an alternative to BCG therapy. We believe bel-sar, if approved, has the potential to change the current treatment paradigm for patients with ocular cancers and other solid tumors.

Bel-sar has shown clinical benefit and has been generally well-tolerated in clinical trials to date. Interim 12-month results from a Phase 2 trial that evaluated 22 patients in an open label dose escalation study of bel-sar delivered via SC injection followed by laser light activation was presented at the 2023 American Academy of Ophthalmology. The results demonstrated that patients who received three cycles of bel-sar therapy showed a local complete response with a tumor control rate of 80% (8/10) and a visual acuity preservation rate of 90% (9/10). The majority of patients were at high-risk for vision loss with tumors close to the fovea or optic disk. For 80% of patients that showed a local complete response, data showed a statistically significant reduction in tumor growth rate (-0.382 mm/yr, p = <0.0001) compared to each patient’s documented growth rate at study entry. The overall tolerability profile of bel-sar was favorable, with no dose-limiting toxicities, treatment-related serious adverse events or significant adverse events reported as of August 3, 2023. The interim Phase 2 results demonstrated an improved risk-benefit profile over IVT, administration and confirmed the SC delivery route of administration for the Phase 3 program. Final Phase 2 data from this study is expected to be presented by the end of 2024.

We are developing a pipeline of VDCs, a novel class of drugs with a dual mechanism of action, that promote cancer cell death by both the delivery of the cytotoxic payload to generate acute necrosis and activation of a secondary immune mediated response. Bel-sar, our lead VDC candidate, consists of an HPV, or human papilloma virus-derived VLP conjugated to hundreds of infrared laser-activated molecules. The VDC is designed in a way that prevents the conjugation from interfering with tumor binding enabling its selectivity to tumor cells but not to normal cells.

Our initial focus is in ocular and urologic oncology, both areas of high unmet medical need where local targeted therapies may enable early intervention. We envision the potential for development of additional therapeutic areas in addition to ocular and urologic cancers.

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We were incorporated as a Delaware corporation in 2009 and, as of August 1, 2022, our headquarters are located in Boston, Massachusetts. Since our inception, we have focused our efforts on identifying and developing potential product candidates, conducting preclinical studies and clinical trials, organizing and staffing our company, business planning, establishing our intellectual property portfolio, raising capital, conducting discovery, research and development activities and providing general and administrative support for these operations. We do not have any product candidates approved for sale and have not generated any revenue to date. We have funded our operations primarily through the sale of convertible preferred stock, common stock, and warrants. From inception through December 31, 2023, we have raised an aggregate of approximately $418.4 million of gross proceeds primarily from private placements of our equity and convertible preferred stock as well as through the issuance of our common stock. On November 9, 2023, we issued and sold 11,000,000 shares of common stock at a price to the public of $9.00 per share for aggregate gross proceeds of $99.0 million, or the 2023 Follow-On Offering. We received approximately $92.6 million in net proceeds from the 2023 Follow-On Offering after deducting underwriting discounts and commissions and offering expenses. On December 5, 2022, we issued and sold 7,705,000 shares of common stock, including the full exercise of the underwriters’ option to purchase additional shares at a price to the public of $12.00 per share, for aggregate gross proceeds of $92.5 million, or the 2022 Follow-On Offering. We received approximately $86.7 million in net proceeds from the 2022 Follow-On Offering after deducting underwriting discounts, commissions and offering expenses. On November 1, 2022, we filed a shelf registration statement on Form S-3, or the 2022 Shelf, with the SEC in relation to the registration of up to an aggregate offering price of $250.0 million of common stock, preferred stock, debt securities, warrants and units or any combination thereof. We also simultaneously entered into an Open Market Sale AgreementSM, or the Sales Agreement, with Jefferies LLC, or the Sales Agent, to provide for the offering, issuance and sale by us of up to an aggregate of $75.0 million of its common stock from time to time in “at-the-market” offerings, or the ATM, under the 2022 Shelf and subject to the limitations thereof. We issued 261,807 shares of common stock at an average price of $12.49 for aggregate gross proceeds of $3.3 million during the year ended December 31, 2023 under the ATM. In addition, we issued 732,189 shares of common stock at an average price of $12.51 for aggregate gross proceeds of $9.2 million as of December 31, 2022 under the ATM. In connection with the 2023 Follow-On Offering, on November 6, 2023, we delivered written notice to Jefferies that we were suspending and terminating the prospectus related to the shares issuable in the ATM pursuant to the terms of the Sales Agreement. As a result, we will not make any sales of our securities pursuant to the Sales Agreement, unless and until a new prospectus, prospectus supplement, or a new registration statement relating to the shares eligible to be sold in the ATM is filed. Other than the termination of the prospectus, the Sales Agreement remains in full force and effect.

We have incurred significant operating losses in every year since our inception in 2009 and have not generated any revenue. We expect to continue to incur significant expenses and operating losses for the foreseeable future. Our ability to generate product revenue sufficient to achieve profitability will depend on the successful development and commercialization of one or more of our product candidates. Our net losses were $76.4 million and $58.8 million for the years ended December 31, 2023 and 2022, respectively. As of December 31, 2023, we had an accumulated deficit of $287.3 million. In addition, our losses from operations may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our clinical trials and our expenditures on other research and development activities.

We anticipate that our expenses and capital requirements will increase substantially in connection with our ongoing activities, particularly as we advance the preclinical studies and clinical trials of our product candidates. In addition, we incur additional costs associated with operating as a public company. We expect that our expenses and capital requirements will increase substantially if and as we:

conduct our current and future clinical trials of bel-sar;

progress the preclinical and clinical development of new indications;

establish our manufacturing capability, including developing our CDMO relationships;

seek to identify and develop additional product candidates;

seek regulatory approval of our current and future product candidates;

expand our operational, financial, and management systems and increase personnel, including personnel to support our preclinical and clinical development, manufacturing and commercialization efforts;

maintain, expand and protect our intellectual property portfolio; and

incur additional legal, accounting, or other expenses in operating our business, including the additional costs associated with operating as a public company.

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As a result, we will need substantial additional funding to support our continuing operations and pursue our growth strategy. Until we can generate significant revenue from product sales, if ever, we expect to finance our operations through a combination of equity offerings, debt financings, collaborations or other strategic transactions. We may be unable to raise additional funds or enter into such other agreements or arrangements when needed on favorable terms, or at all. If we fail to raise capital or enter into such agreements as, and when, needed, we may have to significantly delay, scale back or discontinue the development and commercialization of one or more of our product candidates.

We will not generate revenue from product sales unless and until we successfully complete clinical development and obtain marketing approval for our product candidates. The lengthy process of securing marketing approvals for new drugs requires the expenditure of substantial resources. Any delay or failure to obtain regulatory approvals would materially adversely affect the development efforts of our product candidates and our business overall. Because of the numerous risks and uncertainties associated with product development, we are unable to predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability. Even if we are able to generate revenue from product sales, we may not become profitable. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and be forced to reduce or terminate our operations.

As of December 31, 2023, we had cash and cash equivalents and marketable securities of $226.2 million. We believe that our existing cash and cash equivalents and marketable securities will enable us to fund our operating expenses and capital expenditure requirements into the second half of 2026. 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” below.

Components of Our Results of Operations

Revenue

Since inception, we have not generated any revenue and do not expect to generate any revenue from the sale of products in the foreseeable future. If our development efforts for one or more of our product candidates are successful and result in regulatory approval, or if we enter into collaboration or license agreements with third parties, we may generate revenue in the future from a combination of product sales or payments from collaboration or license agreements. We cannot predict if, and when, or to what extent, we will generate revenue from the commercialization and sale of our product candidates. We may never succeed in obtaining regulatory approval for any of our product candidates.

Operating Expenses

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for our research activities, including our discovery efforts and the development of our bel-sar program, and include:

employee-related expenses, including salaries, related-benefits and stock-based compensation expense for employees engaged in research and development functions;

fees paid to consultants for services directly related to our product development and regulatory efforts;

expenses associated with conducting preclinical studies performed by ourselves, outside vendors or academic collaborators;

expenses incurred under agreements with CROs, as well as consultants that conduct and provide supplies for our preclinical studies and clinical trials;

the cost of manufacturing bel-sar, including the potential cost of CDMOs that manufacture product for use in our preclinical studies and clinical trials and perform analytical testing, scale-up and other services in connection with our development activities;

costs associated with preclinical activities and development activities;

costs associated with our intellectual property portfolio;

costs related to compliance with regulatory requirements; and

allocated expenses for utilities and other facility-related costs.

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We expense research and development costs as incurred. Costs for external development activities are recognized based on an evaluation of the progress to completion of specific tasks using information provided to us by our vendors. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and are reflected in our financial statements as prepaid or accrued research and development expenses. We allocate our direct external research and development costs across the entire bel-sar program. Preclinical expenses consist of external research and development costs associated with activities to support our current and future clinical programs, but are not allocated by specific indications due to the overlap of the potential benefit of those efforts across the entire bel-sar program.

Research and development activities are central to our business. We expect that our research and development expenses will increase for the foreseeable future as we continue clinical development for bel-sar and continue to discover and develop additional product candidates. If any of our product candidates enter into later stages of clinical development, they will generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in our executive and finance functions. General and administrative expenses also include professional fees for legal, accounting, auditing, tax and consulting services; travel expenses; and facility-related expenses, which include allocated expenses for rent and maintenance of facilities and other operating costs not included in research and development.

We expect that our general and administrative expenses will increase in the near-term as we continue to build a team to support our administrative, accounting and finance, communications, legal and business development efforts. We expect to incur increased expenses associated with our growth, including costs of accounting, audit, legal, regulatory and tax compliance services; director and officer insurance costs; and investor and public relations costs.

Other Income (Expense)

Our other income (expense) consists of accretion, interest income and realized losses on marketable securities, interest income on our invested cash balances, and gains and losses on disposals of equipment.

Income Tax Benefit (Provision), Net

For the year ending December 31, 2023, we have recorded a $0.1 million tax provision related to the current state income taxes. Since our inception, we have not recorded any U.S. federal benefits for our net operating loss carryforwards or research and development tax credits, due to the uncertainty of realizing a benefit from those items. As of December 31, 2023, we had federal gross operating loss carryforwards of approximately $174.4 million which may be available to offset future taxable income, of which $44.2 million begin to expire in 2029 and go through 2037 and $130.2 million do not expire. The state gross operating loss carryforwards of $148.5 million, which may be available to offset future taxable income and which would begin to expire in 2030, except for $0.7 million of state NOLs that do not expire. We had foreign gross operating loss carryforwards of $0.1 million, which may be available to offset future taxable income and which do not expire. As of December 31, 2023, we had federal and state research and experimentation credit carryforwards of $8.2 million and $2.3 million, respectively, which may be available to offset future income tax liabilities and which would begin to expire in 2029 and 2028, respectively. Due to the degree of uncertainty related to the ultimate use of the deferred tax assets, we have fully reserved these tax benefits, as the determination of the realization of the deferred tax benefits was not determined to be more likely than not.

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Results of Operations

Comparison of the Years Ended December 31, 2023 and 2022

The following table summarizes our results of operations for the years ended December 31, 2023 and 2022:

Year EndedDecember 31,

(in thousands)

Operating expenses:

Other income (expense):

Interest income, including amortization of discount 8,588 1,864 6,724

Gain (loss) from disposal of assets 208 (318 ) 526

Other income (expense): (76 ) (14 ) (62 )

Income tax benefit (provision), net (137 ) — (137 )

Research and Development Expenses

The following table summarizes our research and development expenses for the years ended December 31, 2023 and 2022:

Year EndedDecember 31,

(in thousands)

Research and development expenses increased to $65.2 million for the year ended December 31, 2023, from $42.2 million for the year ended December 31, 2022, primarily due to ongoing clinical costs associated with the progression of our Phase 2 study and CRO costs associated with the start of our Phase 3 global trial, and manufacturing and development costs for bel-sar.

General and Administrative Expenses

General and administrative expenses increased to $19.8 million for the year ended December 31, 2023, from $18.1 million for the year ended December 31, 2022, primarily driven by personnel expenses, as well as increases in travel expenses related to growth of our company.

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Liquidity and Capital Resources

To date we have funded our operations primarily through the sale of convertible preferred stock, and common stock. Through December 31, 2023, we have raised an aggregate of approximately $418.4 million of gross proceeds primarily from private placements of our equity and convertible preferred stock and warrants, as well as through the issuance of our common stock. On November 9, 2023, we issued and sold 11,000,000 shares of common stock at a price to the public of $9.00 per share for aggregate gross proceeds of $99.0 million in the 2023 Follow-On Offering. We received approximately $92.6 million in net proceeds from the 2023 Follow-On Offering after deducting underwriting discounts and commissions and offering expenses. On December 5, 2022, we issued and sold 7,705,000 shares of common stock, including the full exercise of the underwriters’ option to purchase additional shares at a price to the public of $12.00 per share for aggregate gross proceeds of $92.5 million in the 2022 Follow-On Offering. We received approximately $86.7 million in net proceeds from the 2022 Follow-On Offering after deducting underwriting discounts, commissions and offering expenses. On November 1, 2022, we filed the 2022 Shelf with the SEC in relation to the registration of up to an aggregate offering price of $250.0 million of common stock, preferred stock, debt securities, warrants and units or any combination thereof. We also simultaneously entered into the Sales Agreement with the Sales Agent to provide for the offering, issuance and sale by us of up to an aggregate of $75.0 million of our common stock from time to time in the ATM under the 2022 Shelf and subject to the limitations thereof. We issued 261,807 shares of common stock at an average price of $12.49 for aggregate gross proceeds of $3.3 million during the year ended December 31, 2023 under the ATM. In addition, we issued 732,189 shares of common stock at an average price of $12.51 for aggregate gross proceeds of $9.2 million as of December 31, 2022 under the ATM. In connection with the 2023 Follow-On Offering, on November 6, 2023, we delivered written notice to Jefferies that we were suspending and terminating the prospectus related to the shares issuable in the ATM pursuant to the terms of the Sales Agreement. As a result, we will not make any sales of our securities pursuant to the Sales Agreement, unless and until a new prospectus, prospectus supplement, or a new registration statement relating to the shares eligible to be sold in the ATM is filed. Other than the termination of the prospectus, the Sales Agreement remains in full force and effect.

The following table summarizes our cash flows for each of the periods presented:

Twelve Months EndedDecember 31,

(in thousands)

Net cash used in operating activities $ (63,847 ) $ (54,601 )

Net cash used in investing activities (113,963 ) (67,869 )

Net cash provided by financing activities 97,290 95,629

Operating Activities

During the year ended December 31, 2023, net cash used in operating activities was $63.8 million, primarily due to our net loss of $76.4 million, partially offset by an increase in accrued expenses related to clinical and CRO expenses for bel-sar.

During the year ended December 31, 2022, net cash used in operating activities was $54.6 million, primarily due to our net loss of $58.8 million and an increase in prepaid expenses and other assets related to clinical and CRO prepayments for bel-sar, partially offset by an increase in stock compensation expense.

Investing Activities

Net cash used in investing activities for the year ended December 31, 2023 was $114.0 million, primarily due to purchases of marketable securities and property and equipment, partially offset by proceeds from sale and maturities of marketable securities.

Net cash used in investing activities for the year ended December 31, 2022 was $67.9 million, primarily due to purchases of marketable securities and property and equipment, partially offset by proceeds from sale and maturities of marketable securities.

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Financing Activities

During the year ended December 31, 2023, net cash provided by financing activities was $97.3 million from the net proceeds from the 2023 follow-on offering, ATM draw-downs, and proceeds from stock option exercises and ESPP purchases.

During the year ended December 31, 2022, net cash provided by financing activities was $95.6 million from the net proceeds from the follow-on offering, ATM draw-downs, and proceeds from stock option exercises.

Funding Requirements

Our plan of operation is to continue implementing our business strategy, continue research and development of bel-sar and any other product candidates we may acquire or develop and continue to expand our research pipeline and our internal research and development capabilities. We expect our expenses to increase substantially in connection with our ongoing activities, particularly as we advance the preclinical activities and clinical trials of our current and future product candidates. In addition, we expect to incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on attractive terms, we would be forced to delay, reduce or terminate our research and development programs or future commercialization efforts. Our future capital requirements will depend on many factors, including:

the scope, timing, progress, costs, and results of discovery, preclinical development, and clinical trials for our current and future product candidates;

the number of clinical trials required for regulatory approval of our current and future product candidates;

the costs, timing, and outcome of regulatory review of any of our current and future product candidates;

the cost of manufacturing clinical and commercial supplies of our current and future product candidates;

the costs and timing of future commercialization activities, including manufacturing, marketing, sales, and distribution, for any of our product candidates for which we receive marketing approval;

the costs and timing of preparing, filing, and prosecuting patent applications, maintaining and enforcing our intellectual property rights, and defending any intellectual property-related claims, including any claims by third parties that we are infringing upon their intellectual property rights;

our ability to maintain existing, and establish new, strategic collaborations, licensing, or other arrangements and the financial terms of any such agreements, including the timing and amount of any future milestone, royalty, or other payments due under any such agreement;

the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval;

expenses to attract, hire and retain, skilled personnel;

the costs of operating as a public company;

our ability to establish a commercially viable pricing structure and obtain approval for coverage and adequate reimbursement from third-party and government payors;

addressing any potential interruptions or delays resulting from factors related to the ongoing impacts of the COVID-19 pandemic;

the effect of competing technological and market developments;

the extent to which we acquire or invest in businesses, products, and technologies; and

unfavorable global economic conditions, which may exacerbate the magnitude of the factors discussed above.

A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of that product candidate. As of December 31, 2023, we had cash and cash equivalents and marketable securities of $226.2 million. Based on our research and development plans, we believe that our existing cash and cash equivalents, will be sufficient to fund our operations into the second half of 2026. 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.

Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our operations from the sale of additional equity or debt financings, or other capital which comes in the form of strategic collaborations, licensing, or other arrangements. In the event that additional financing is required, we may not be able to raise it on terms acceptable to us, or at all. If we raise additional funds through the issuance of equity or

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convertible preferred stock, it may result in dilution to our existing stockholders. Debt financing or preferred equity financing, if available, may result in increased fixed payment obligations, and the existence of securities with rights that may be senior to those of our common stock. If we incur indebtedness, we could become subject to covenants that would restrict our operations.

If we raise funds through strategic collaboration, licensing or other arrangements, we may relinquish significant rights or grant licenses on terms that are not favorable to us. Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide. 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 products or product candidates that we would otherwise prefer to develop and market ourselves.

Material Cash Requirements

The following table summarizes our contractual obligations and commitments as of December 31, 2023.

Payments Due by Period

Total Less than1 Year 1 to 3Years 3 to 5Years More than5 Years

(in thousands)

(1)

Amounts in the table above reflect payments due for our lease of office and lab space in Boston, Massachusetts, that expires in August 2032.

On May 16, 2022, we entered into an office and laboratory lease in Boston, MA with an initial 10-year term and one renewal option to extend the lease for an additional seven years. The lease commenced on August 1, 2022.

Except as disclosed in the table above, we have no long-term debt or finance leases and no material non-cancelable purchase commitments with service providers, as we have generally contracted on a cancelable, purchase-order basis. We enter into contracts in the normal course of business with equipment and reagent vendors, CROs, CDMOs and other third parties for clinical trials, preclinical research studies and testing and manufacturing services. These contracts are cancelable by us upon prior notice. Payments due upon cancellation consist only of payments for services provided or expenses incurred, including noncancelable obligations of our service providers, up to the date of cancellation. We have also acquired exclusive and non-exclusive rights to use, research, develop and offer for sale certain products and patents under license agreements. The license agreements obligate us to make payments to the licensors for license fees, milestones, license maintenance fees and royalties. These payments are not included in the preceding table as the amount and timing of such payments are not known.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles, or U.S. GAAP. The preparation of our consolidated financial statements and related disclosures requires us to make estimates and assumptions that affect the reported amounts of assets and 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 greater detail in Note 2 to our consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K, we believe that the following accounting

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policies are those most critical to the judgments and estimates used in the preparation of our consolidated financial statements.

Research and Development Costs

We expense all costs in performing research and development activities in the periods in which they are incurred. Research and development expenses include salaries and benefits, stock-based compensation expense, lab supplies and facility costs, as well as fees paid to nonemployees and entities that conduct certain research and development activities on our behalf and expenses incurred in connection with license agreements. Non-refundable advance payments for goods or services that will be used for rendered or future research and development activities are deferred and amortized over the period that the goods are delivered, or the related services are performed, subject to an assessment of recoverability.

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued research and development expenses. We make estimates of our accrued expenses as of each balance sheet date in the consolidated financial statements based on facts and circumstances known to us at that time. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the expense. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from the estimate, we adjust the accrual or the amount of prepaid expenses accordingly. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in reporting amounts that are too high or too low in any particular period. To date, there have not been any material adjustments to our prior estimates of accrued research and development expenses.

Stock-Based Compensation

We account for our stock-based compensation as expense in the consolidated statements of operations and comprehensive loss based on the awards’ grant date fair values. We account for forfeitures as they occur by reversing any expense recognized for unvested awards.

For grants of restricted stock units, we base the fair value on the stock price as of the date of grant. We estimate the fair value of options granted using the Black-Scholes option pricing model. The Black-Scholes option pricing model requires inputs based on certain subjective assumptions, including (a) the expected stock price volatility, (b) the calculation of expected term of the award, (c) the risk-free interest rate and (d) expected dividends. Due to a lack of company-specific historical and implied volatility data, we have based our estimate of expected volatility on the historical volatility of a group of similar companies that are publicly traded. The historical volatility is calculated based on a period of time commensurate with the expected term assumption. The computation of expected volatility is based on the historical volatility of a representative group of companies with similar characteristics to us, including stage of product development and life science industry focus. We use the simplified method as allowed by the SEC, Staff Accounting Bulletin, or SAB, No. 107, Share-Based Payment, to calculate the expected term for options granted to employees as we do not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected term of the stock options. The expected dividend yield is assumed to be zero as we have never paid dividends and have no current plans to pay any dividends on our common stock. The fair value of stock-based payments is recognized as expense over the requisite service period which is generally the vesting period.

Recent Accounting Pronouncements

See Note 2 in our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for a description of recent accounting pronouncements applicable to our consolidated financial statements. Other than as disclosed in our consolidated financial statements, we do not expect that any recently issued accounting standards will have a material impact on our consolidated financial statements or will otherwise apply to our operations.

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Emerging Growth Company and Smaller Reporting Company Status

The JOBS Act, permits that an “emerging growth company” may take advantage of the extended transition period to comply with new or revised accounting standards applicable to public companies until those standards would otherwise apply to private companies. We have elected to use the extended transition period under the JOBS Act. Accordingly, our consolidated financial statements may not be comparable to the financial statements of public companies that comply with such new or revised accounting standards. The JOBS Act also exempts us from having to provide an auditor attestation of internal control over financial reporting under Sarbanes-Oxley Act Section 404(b).

We will remain an “emerging growth company” until the earliest of: the last day of the fiscal year in which we have more than $1.235 billion in annual revenue; the date we qualify as a “large accelerated filer,” with at least $700.0 million of equity securities held by non-affiliates; the issuance, in any three-year period, by us of more than $1.0 billion in non-convertible debt securities; or the last day of the fiscal year ending after the fifth anniversary of our IPO.

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 is 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 will not be required to obtain a separate attestation of internal control over financial reporting, or ICFR, from an outside auditor.

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

Under SEC rules and regulations, as a smaller reporting company, we are not required to provide the information required by this item.

Item 8. Financial Statements and Supplementary Data.

Our consolidated financial statements, together with the report of our independent registered public accounting firm, appear beginning on page F-1 of this Annual Report for the year ended December 31, 2023.

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 Rules 13a-15(e) and 15d-15(e) under the Exchange Act, that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized and reported, within the time periods specified in the SEC's rules and forms and (2) accumulated and communicated to our management, including our principal executive officer and principal financial officer, to allow timely decisions regarding required disclosure.

As of December 31, 2023, our management, under the supervision of our Chief Executive Officer and Chief Financial Officer, performed an evaluation of the effectiveness of our disclosure controls and procedures. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of December 31, 2023.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining an adequate system of internal control over financial reporting, as defined in the Exchange Act Rule 13a-15(f). Management conducted an assessment of our internal control over financial reporting based on the framework established in 2013 by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control—Integrated Framework. Based on the assessment, management concluded that, as of December 31, 2023, our internal control over financial reporting was effective.

This Annual Report does not include an attestation report of our registered public accounting firm regarding internal control over financial reporting as required by Section 404(c) of the Sarbanes Oxley Act of 2002. Because we qualify as an emerging growth company under the JOBS Act, management's report was not subject to attestation by our independent registered public accounting firm.

Limitations on Effectiveness of Controls and Procedures

Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Due to the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our company have been detected. Because of these limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become ineffective because of changes in conditions or that the degree of compliance with established policies or procedures may deteriorate.

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Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of the end of the period covered by this Annual Report. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that as of December 31, 2023, our disclosure controls and procedures were effective to provide reasonable assurance that the information required to be disclosed by us in this Annual Report was (a) reported within the time periods specified by the SEC rules and regulations, and (b) communicated to our management, including our Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding any required disclosure.

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(d) and 15d-15(d) of the Exchange Act that occurred during the year ended December 31, 2023, that have materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.

Attestation Report of the Registered Public Accounting Firm

This Annual Report on Form 10-K does not include an attestation report of our registered public accounting firm due to a transition period established by rules of the SEC for newly public companies. Additionally, our independent registered public accounting firm will not be required to opine on our internal control over financial reporting until we are no longer an emerging growth company.

Item 9B. Other Information.

(a) None.

(b) During our last fiscal quarter, the following officer, as defined in Rule 16a-1(f), adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows: On November 14, 2023, Cadmus C. Rich, M.D., our former Chief Medical Officer, modified his existing Rule 10b5-1(c) trading arrangement, originally adopted on April, 20, 2022. The modified trading arrangement is intended to satisfy the affirmative defense of Rule 10b5-1(c) for the sale of up to 139,787 shares of our common stock. The modified trading arrangement terminates on April 15, 2024, or upon the earlier completion of all authorized transactions under the trading arrangement.

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

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance.

The following table sets forth information about our directors, executive officers and other key employees as of March 20, 2024.

Name Positions Age

Executive Officers 

Elisabet de los Pinos, Ph.D. President, Chief Executive Officer and Director 51

Julie Feder Chief Financial Officer 53

Mark Plavsic, Ph.D. Chief Technology Officer 63

Non-Employee Directors 

David Johnson (2)(3) Director 59

Giovanni Mariggi, Ph.D. (1) Director 39

Antony Mattessich (1)(3) Director 57

Raj Parekh, Ph.D. Director 63

Sapna Srivastava, Ph.D. (1) Director 53

Karan Takhar (2)(3) Director 32

(1)

Member of the Audit Committee.

(2)

Member of the Compensation Committee.

(3)

Member of the Nominating and Corporate Governance Committee.

Executive Officers

Elisabet de los Pinos, Ph.D., is our founder and Chief Executive Officer. Since our founding in January 2010, Dr. de los Pinos has led our strategy and operations and has spearheaded our fundraising efforts. Prior to our founding, she was a brand manager in Eli Lilly & Co.’s oncology business unit, where she was part of the leadership team responsible for the market launch in Europe of Alimta, a drug for the treatment of lung cancer. Earlier in her career, Dr. de los Pinos worked as a post-doctoral fellow at the Institute of Cancer Research at the University of London. She previously completed research fellowships at the Mount Sinai School of Medicine Institute of Molecular Medicine of New York University and at the Georgetown School of Medicine. She is a member of the board of overseers at the Museum of Science, Boston. Dr. de los Pinos has been named to Boston Business Journal’s 2009 “Top 40 under 40” list; as a Mass High Tech “Woman to Watch” in 2010; as a “Technology Pioneer” by the World Economic Forum in 2010; and as one of Goldman Sachs’s “100 Most Intriguing Entrepreneurs” in 2014. Dr. de los Pinos holds a Ph.D., magna cum laude, in Molecular Biology from the University of Barcelona and an M.B.A. from IE Business School.

Julie Feder has served as our Chief Financial Officer since August 2018. Prior to this role, Ms. Feder served as Chief Financial Officer at Verastem, from July 2017 to June 2018, where she was responsible for developing the company’s strategic financial plan and overseeing a rapid financial and staff growth. Prior to joining Verastem, Ms. Feder served as the Chief Financial Officer at CHAI from September 2011 to July 2017. At CHAI, Ms. Feder was responsible for managing a global team across multiple departments and developed the global finance strategy and internal audit, treasury and global payroll functions. Prior to joining CHAI, Ms. Feder spent three years at Genzyme Corporation, as Vice President of Internal Audit and later as Finance Integration Leader. In these roles, she managed the day-to-day operations of Genzyme Corporation’s global internal audit function, while leading the Genzyme Corporation Global Finance integration following Sanofi’s acquisition of Genzyme Corporation. Ms. Feder began her career at Deloitte & Touche LLP, where she was Senior Manager of Audit, Consulting and Enterprise Risk Services. Ms. Feder holds a B.S. in Accounting from Yeshiva University’s Sy Syms School of Business.

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J. Jill Hopkins, M.D, has served as our Chief Medical Officer and President of Research & Development since October 2023. Prior to this role, Dr. Hopkins served as Senior Vice President, Global Head of Ophthalmology and Exploratory Development at Novartis (NYSE: NVS and NOVN) and Chief Executive Officer of Gyroscope Therapeutics (Nasdaq: VISN), a Novartis company, where she was responsible for the global ophthalmic pipeline and portfolio of medicines, gene therapy, devices and digital solutions to impact eye disease and reduce visual impairment globally. Previously, Dr. Hopkins spent over a decade at Roche-Genentech in roles of increasing responsibility, most recently as Global Head Ophthalmology Personalized Health Care. Before Roche-Genentech, she spent over 20 years in clinical retinal research and academic practice at the University of Toronto, University of Southern California, and Retina-Vitreous Associates Medical Group. Dr. Hopkins has over 30 years of cross-sector experience in ophthalmology, spanning clinical care, academia, education, industry, advocacy and innovation. Dr. Hopkins received her M.D. from McMaster University and completed her Ophthalmology residency at the University of Toronto. She has completed fellowships in Retinal Disease from Moorfields Eye Hospital in London UK and in Visual Electrophysiology from the Universities of Toronto and Ottawa. Dr. Hopkins is board certified in Ophthalmology from the American Board of Ophthalmology and the Royal College of Surgeons Canada.

Mark Plavsic, Ph.D., has served as our Chief Technology Officer since September 2023. Prior to this role, Dr. Plavsic served as Chief Technology Officer at Fate Therapeutics, Inc. (Nasdaq: FATE), a clinical-stage biopharmaceutical company and was previously Chief Technical Officer at Lysogene, a late-stage gene therapy company. Dr. Plavsic also spent over 10 years at Sanofi Genzyme in Technical Operations, where he was Head of Product Bio-safety and Global Manufacturing Process Improvement, and in Technology Development & Manufacturing, where he was Head of Gene Therapy Development. Before joining Sanofi Genzyme, Dr. Plavsic held various technical leadership positions with AstraZeneca (Nasdaq: AZN), Q-One Biotech Ltd. and Life Technologies. Dr. Plavsic has approximately 30 years of global biopharmaceutical experience including end-to-end technical operations in the United States, Europe and Australasia and successful translation and scale-up of complex biologics from preclinical development through commercial launch and distribution. Dr. Plavsic received his Ph.D. in Virology and Immunology and his DVM from the University of Belgrade, and is board certified in Microbiology, subspeciality Virology from the American College of Veterinary Microbiologists, and Regulatory Affairs Certification credentialed.

Non-Employee Directors

David Johnson has served as a member of our Board since January 2021. He has 25 years of experience in the biopharmaceutical space. Since July 2021, he has been Founder and Chief Executive Officer of Solve Therapeutics, a venture-backed start-up focused on developing next-generation monoclonal antibody (mAb)-based oncology therapeutics. Prior to SolveTx, Mr. Johnson was Chief Executive Officer of VelosBio, which he founded in December 2017 based upon technology licensed from Tom Kipps of University of California, San Diego, built out as a fully functioning preclinical through clinical development organization, and led through an acquisition by Merck & Co. in December 2020 for $2.75B. VelosBio is a clinical stage, oncology-focused, biopharmaceutical company advancing novel ROR1-directed ADCs and bispecific antibodies (BiAbs). VLS-101 Phase 1 clinical proof of concept data was presented at the American Society of Hematology Meeting in the fourth quarter of 2020 and published in manuscript form in 2021. Before VelosBio, Mr. Johnson was with Acerta Pharma, an oncology-focused pharmaceutical company focused on covalent small-molecule technology where he rose to Chief Executive Officer. While with Acerta Pharma, he built out all facets of the corporation, including accelerating the growth of acalabrutinib to rapidly move from early- to late-stage clinical development and launching four global registration directed trials, including an accelerated approval study which ultimately delivered acalabrutinib’s first regulatory approval. His tenure culminated in the execution of a strategic transaction with AstraZeneca valued at $7B. Mr. Johnson is chairman of the board of Zentalis Pharmaceuticals, Inc. (Nasdaq: ZNTL), which is focused on the creation of differentiated small molecules targeting fundamental biological pathways of cancer. From April 2021 until its acquisition by Blueprint Medicine Corporation in December 2021, Mr. Johnson served as chairman of Lengo Therapeutics. Since November 2021, Mr. Johnson has also been a board member of Palleon Pharmaceuticals, Inc., a biopharmaceutical company focused on novel IO therapeutics targeting the immunosuppressive cell surface sialoglycan system associated with cancer cells. Prior to his Chief Executive Officer and board roles, Mr. Johnson held various biopharmaceutical roles of increasing responsibility with Calistoga Pharmaceuticals (acquired by Gilead Sciences), Gloucester Pharmaceuticals (acquired by Celgene), Millennium (acquired by Takeda), Immunex (acquired by Amgen), and Hoffman La-Roche making contributions to many drugs garnering regulatory approval. He has raised $750m+ in biopharma capital and delivered transactions valued at over $10B. Mr. Johnson is a coauthor on numerous publications including four New England Journal of Medicine manuscripts. He has a bachelor’s degree from Indiana University. We believe that Mr. Johnson’s experience as a pharmaceutical business leader provides him with the appropriate set of skills to serve as a member of our Board.

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Giovanni Mariggi, Ph.D., has served as a member of our Board since April 2019. Dr. Mariggi is a member of the co-founding team at Medicxi, having served as a Partner since October 2018 and a Principal from February 2016 to September 2018. Prior to Medicxi, Dr. Mariggi served in multiple roles at Index Ventures, or Index, over four years, ultimately serving as a Principal from January 2015 to January 2016. Prior to joining Index, Dr. Mariggi worked at Cancer Research UK’s London Research Institute (now the Crick Institute) conducting research on vascular biology and angiogenesis, whilst also performing competitive intelligence projects as an independent consultant to various biopharma companies. He currently serves on the boards of a number of portfolio companies, including Vicebio Ltd, Vaderis AG and Ateda Therapeutics Limited. Dr. Mariggi holds a Ph.D. in Biochemistry and Molecular Biology from University College London and a B.Sc. in Biochemistry from Imperial College London. We believe Dr. Mariggi’s experience and background in the biopharmaceutical industry provides him with the appropriate set of skills to serve as a member of our Board.

Antony Mattessich has served as a member of our Board since September 2021. Mr. Mattessich is currently the Chief Executive Officer and a member of the board of directors of Ocular Therapeutix (Nasdaq: OCUL), a position he has held since August 2017. Prior to Ocular Therapeutix, beginning in 2009, he served in roles of increasing responsibility at Mundipharma International, including serving as Managing Director from May 2011 to August 2017. Previous to his time at Mundipharma, Mr. Mattessich ran the U.S. respiratory, dermatology and pediatrics group at Novartis. Before Novartis, Mr. Mattessich held several positions at Bristol-Myers Squibb, among them, Managing Director roles in Malaysia/Singapore and The Netherlands, and Head of Operations for the International Medicines Group. Mr. Mattessich holds a Masters in International Affairs from Columbia University and a B.A. from the University of California at Berkeley. We believe Mr. Mattessich’s leadership experience in biotech and pharmaceuticals provides him with the appropriate set of skills to serve as a member of our Board.

Raj Parekh, Ph.D., has served as a member of our Board since 2015. Dr. Parekh joined Advent Life Sciences as a General Partner in 2005, bringing over 20 years of experience in biomedical research and as an entrepreneur and investor. Since joining Advent, he has been involved with portfolio companies primarily engaged in the discovery of new medicines, including Avila Therapeutics, Inc., Aleta Biotherapeutics, Inc., Levicept Ltd., Artax Biopharma, Inc. and Amphista Therapeutics Limited. Earlier in his career, Dr. Parekh co-founded Oxford GlycoSciences, which was sold to UCB-Celltech. He then served as chairman of Galapagos NV, a member of the Supervisory Board of the Novartis Venture Fund and a founding director of Celldex Therapeutics. Dr. Parekh currently serves on the boards of directors of several portfolio companies, including Arrakis Therapeutics and Levicept Ltd. Previously, Dr. Parekh served on the board of directors of Eloxx Pharmaceuticals (Nasdaq: ELOX). Dr. Parekh holds a Ph.D. in Molecular Medicine and an M.A. in Biochemistry from Oxford University. We believe Dr. Parekh’s experience and background provides him with the appropriate set of skills to serve as a member of our Board.

Sapna Srivastava, Ph.D., has served as a member of our Board since May 2021. Dr. Srivastava most recently served as the Interim Chief Financial Officer at eGenesis, Inc., or eGenesis, a position she has held from March 2021 until October 2021. Prior to eGenesis, she held similar roles as the Chief Financial and Strategy Officer at Abide Therapeutics, Inc. (acquired by Lundbeck) from September 2017 to January 2019 and at Intellia Therapeutics, Inc., or Intellia, from April 2015 to December 2016. In these positions, she has played a key role in equity financings including a successful initial public offering, strategic alliances, mergers and acquisitions and shaping the strategic direction of the companies. Before Intellia, Dr. Srivastava spent more than a decade as a senior biotechnology analyst for Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC and ThinkEquity Partners. She served on the board of directors of Talaris Therapeutics, Inc. (Nasdaq: TALS) from January 2021 to October 2023 until it merged with Tourmaline Bio, Inc. (Nasdaq: TRML) in October 2023 and has since served on the board of Tourmaline Bio, Inc. She also currently serves of the boards of directors of Nuvalent, Inc. (Nasdaq: NUVL), SQZ Biotechnologies Company (Nasdaq: SQZ), Social Capital Suvretta Holdings Corp. II (Nasdaq: DNAB), a special purpose acquisition corporation, and Innoviva, Inc. (Nasdaq: INVA). Dr. Srivastava holds a Ph.D. in Neuroscience from the New York University School of Medicine and a B.S. in Microbiology from St. Xavier’s College at the University of Mumbai. We believe Dr. Srivastava’s experience as an executive officer in the biopharmaceutical industry and investment banking provides her with the appropriate set of skills to serve as a member of our Board.

Our Board recognizes that Dr. Srivastava serves as a director of multiple other public companies, and we believe that it is strongly in the best interests of our company, and our stockholders that Dr. Srivastava serves as a director. Our Board considered her extensive experience serving on the boards of publicly traded life sciences companies and high-level accounting and financial expertise as key attributes in her selection.

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Karan Takhar has served as a member of our Board since March 2021. Since 2013, Mr. Takhar has held roles of increasing responsibility at Matrix Capital Management, L.P., or Matrix, an investment fund focused on technology and life sciences. He currently serves as a Senior Managing Director and the head of Life Sciences investing, a position he has held since February 2021. He previously served as a Managing Director from January 2017 to January 2021 and as a Vice President from January 2016 to December 2016. Mr. Takhar has served as a member of the board of directors of Zentalis (Nasdaq: ZNTL) since December 2017. Mr. Takhar received a B.S. in Economics and Mathematics from the Massachusetts Institute of Technology. We believe Mr. Takhar’s experience investing in life sciences companies provides him with the appropriate set of skills to serve as a member of our Board.

Family Relationships and Arrangements

There are no family relationships between or among any of our directors or executive officers. The principal occupation and employment during the past five years of each of our directors was carried on, in each case except as specifically identified above, with a corporation or organization that is not a parent, subsidiary or other affiliate of us. There is no arrangement or understanding between any of our directors and any other person or persons pursuant to which he or she is to be selected as a director.

Code of Business Conduct and Ethics

We have adopted a Code of Business Conduct and Ethics that applies to our directors, officers, and employees, including our principal executive officer, principal financial officer, principal accounting officer, or controller, or persons performing similar functions. The full text of our Code of Business Conduct and Ethics is posted on our website at https://ir.aurabiosciences.com/corporate-governance/documents-charters. The inclusion of our website address in this Annual Report does not include or incorporate by reference the information on our website into this Annual Report, and you should not consider that information a part of this Annual Report. If we make any substantive amendments to, or grant any waivers from, our Code of Business Conduct and Ethics for any officer or director, we will disclose the nature of such amendment or waiver on our website or in a current report on Form 8-K.

Recommendation of Director Nominees by Stockholders

There have been no material changes to the procedures by which our stockholders may recommend nominees to the Board.

Audit Committee

The members of our Audit Committee are Sapna Srivastava, Ph.D., Giovanni Mariggi, Ph.D., and Antony Mattessich. Dr. Srivastava is the Chair of the Audit Committee. Our Board has determined that all members of our Audit Committee meet the requirements for financial literacy under the applicable rules and regulations of the SEC and the Nasdaq listing rules and that Dr. Srivastava is a “audit committee financial expert” (within the meaning of applicable SEC regulations). Please see “—Non-Employee Directors—Sapna Srivastava, Ph.D.” for more information. Each of the members of the audit committee is independent pursuant to applicable Nasdaq listing standards.

Policy on Trading, Pledging and Hedging of Company Stock

Certain transactions in our securities (such as purchases and sales of publicly traded put and call options, and short sales) create a heightened compliance risk or could create the appearance of misalignment between management and stockholders. In addition, securities held in a margin account or pledged as collateral may be sold without consent if the owner fails to meet a margin call or defaults on the loan, thus creating the risk that a sale may occur at a time when an officer or director is aware of material, non-public information or otherwise is not permitted to trade in our securities. Our insider trading policy expressly prohibits derivative transactions of our stock by our executive officers, directors, employees, consultants and designated contractors. Our insider trading policy expressly prohibits purchases of any derivative securities that provide the economic equivalent of ownership.

Item 11. Executive Compensation.

Executive Compensation Overview

As an emerging growth company, we have opted to comply with the executive compensation disclosure rules applicable to “smaller reporting companies,” as such term is defined in the rules promulgated under the Securities

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Act. This section provides an overview of the compensation awarded to and earned by each individual who served as our principal executive officer at any time during the year ended December 31, 2023 and to our next two most highly compensated executive officers in respect of their service to our company for our year ended December 31, 2023. We refer to these individuals as our “named executive officers.” Our named executive officers for the year ended December 31, 2023 are:

Elisabet de los Pinos, Ph.D., our President and Chief Executive Officer;

Julie B. Feder, our Chief Financial Officer; and

Cadmus C. Rich, M.D., our former Chief Medical Officer.

2023 Summary Compensation Table

The following table presents the compensation awarded to, earned by or paid to each of our named executive officers for the years indicated.

Chief Financial Officer

(1)

Amounts represent the aggregate grant date fair value of the restricted stock unit and option awards granted to our named executive officers during the fiscal year ended December 31, 2023, computed in accordance with FASB Accounting Standards Codification Topic 718, or FASB ASC Topic 718. A discussion of the assumptions used in determining grant date fair value may be found in Note 9 to our consolidated financial statements included in this Annual Report for the fiscal year ended December 31, 2023. This amount does not correspond to the actual value that may be recognized by the named executive officer upon exercise of the applicable award or sale of the underlying shares of stock.

(2)

Amounts represent the annual bonuses paid with respect to achievement of our company and, if applicable, individual performance objectives for 2023 and 2022.

(3)

The amounts reported represent matching contributions made by us under our 401(k) plan.

(4)

Dr. Rich resigned as Chief Medical Officer effective October 16, 2023. Amount reported represents (i) $19,800 in employer matching contributions made by us under our 401(k) plan, (ii) $12,189 in accrued vacation and (iii) nine months’ of severance ($341,550) and nine months’ of benefits continuation ($25,675) paid or accrued in 2023 pursuant to a Transition Agreement as described below under “—Executive Employment Arrangements.”

Narrative to 2023 Summary Compensation Table

Our Board and Compensation Committee review compensation annually for our executive officers. In setting executive base salaries and bonuses and granting equity incentive awards, we consider compensation for comparable positions in the market, the historical compensation levels of our executives, individual performance as compared to our expectations and objectives, our desire to motivate our employees to achieve short- and long-term results that are in the best interests of our stockholders and a long-term commitment to our company. We target a general competitive position, based on independent third-party benchmark analytics to inform the mix of compensation of base salary, bonus or long-term incentives.

Our Compensation Committee is authorized to retain the services of one or more executive compensation advisors, as it sees fit, in connection with the establishment of our executive compensation programs and related

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policies. In fiscal year 2023 the Compensation Committee continued to retain Pay Governance to provide it with market information, analysis and other advice relating to executive compensation on an ongoing basis. The Compensation Committee engaged Pay Governance to, among other things, assist in developing a group of peer companies to help us determine overall compensation for our executive officers, as well as to assess each separate element of compensation. The goal was to ensure that the compensation we offer to our executive officers, individually as well as in the aggregate, is competitive and aligned with our business and executive talent requirements. We do not believe the retention of, and the work performed by, Pay Governance creates any conflict of interest because Pay Governance performs no other work for our company besides advising the Compensation Committee.

Our Compensation Committee is responsible for determining the compensation for all executive officers. Based on its discretion, taking into account the factors noted above, the Compensation Committee sets the compensation for each executive officer, including for the Chief Executive Officer, without the Chief Executive Officer present.

Base Salaries

Our named executive officers each receive a base salary to compensate them for services rendered to our company. The base salary payable to each named executive officer is intended to provide a fixed component of compensation reflecting the executive’s skill set, experience, role and responsibilities. Base salaries are reviewed annually, typically in connection with our annual performance review process, approved by our Board or Compensation Committee, and may be adjusted from time to time to realign salaries with market levels after taking into account individual responsibilities, performance and experience.

For fiscal year 2023, the annual base salary for each of Dr. de los Pinos, Ms. Feder and Dr. Rich were $585,525, $437,825 and $455,400, respectively.

Bonuses

We pay cash bonuses to reward our executives for their performance over the fiscal year, based on the achievement of certain corporate performance goals and, if applicable, individual performance goals. We believe such bonuses properly incentivize our named executive officers and allow us to remain competitive within the marketplace. The target annual bonuses for Dr. de los Pinos, Ms. Feder and Dr. Rich for the fiscal year ended December 31, 2023 were 55%, 40% and 40% of annual base salary, respectively. Based on our achievement of the applicable performance goals for 2023, the Compensation Committee determined that we had achieved 90% of our corporate goals, and, after evaluating applicable individual performance goals, each named executive officer (other than Dr. Rich) earned the amount set forth in the 2023 Summary Compensation Table above. Dr. Rich resigned in October 2023 and, accordingly, was not eligible to earn a bonus for 2023 performance.

Equity Compensation

Although we do not have a formal policy with respect to the grant of equity incentive awards to our executive officers, we believe that equity grants provide our executives with a strong link to our long-term performance, create an ownership culture and help to align the interests of our executives and our stockholders. In addition, we believe that equity grants promote executive retention because they incentivize our executive officers to remain in our employment during the vesting period. Accordingly, our Board or our Compensation Committee periodically reviews the equity incentive compensation of our named executive officers and may grant equity incentive awards to them from time to time. During fiscal year 2023, we granted both options and restricted stock units to our named executive officers.

Perquisites

We generally do not provide perquisites to our executives, other than matching contributions to our 401(k) plan, reimbursements for certain travel and relocation expenses and certain other de minimis perquisites to our executive officers, including our named executive officers.

Aura Biosciences, Inc. 401(k) Plan

We currently maintain a 401(k) retirement savings plan for our employees, including our named executive officers, who satisfy certain eligibility requirements. Our named executive officers are eligible to participate in the 401(k) plan on the same terms as other full-time employees. Our 401(k) plan is intended to qualify for favorable tax

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treatment under Section 401(a) of the Code, and contains a cash or deferred feature that is intended to meet the requirements of Section 401(k) of the Code. We believe that providing a vehicle for tax-deferred retirement savings though our 401(k) plan adds to the overall desirability of our executive compensation package and further incentivizes our employees, including our named executive officers, in accordance with our compensation policies.

Executive Employment Arrangements

Elisabet de los Pinos, Ph.D.

We entered into an employment agreement with Dr. de los Pinos, who serves as our Chief Executive Officer, in January 2015, which we amended in October 2017, or as amended, the de los Pinos Employment Agreement. The de los Pinos Employment Agreement provides for Dr. de los Pinos’s at-will employment, base salary, and annual target bonus. Dr. de los Pinos is also eligible to participate in the employee benefit plans available to our employees, subject to the terms of those plans.

Pursuant to the de los Pinos Employment Agreement, in the event that Dr. de los Pinos’s employment is terminated by us without “cause” or by Dr. de los Pinos for “good reason” (as defined in the de los Pinos Employment Agreement), subject to the execution and effectiveness of a release within 60 days of such termination, she will be entitled to receive (i) 12 months of base salary continuation and a pro-rata share of any bonus for which Dr. de los Pinos was eligible, (ii) continued vesting of stock options for 12 months and (iii) subject to the Dr. de los Pinos’s timely election to continue COBRA health coverage and copayment of premium amounts at the applicable active employees’ rate, we will continue to pay the share of the premiums that we would have paid to provide health insurance to Dr. de los Pinos for the 12 month severance period. In the event that such termination occurs within nine months after a “change of control” (as defined in the de los Pinos Employment Agreement), Dr. de los Pinos will, subject to the execution and effectiveness of a release within 60 days of such termination, be entitled to receive a lump sum payment equal to 12 months of base salary as of the date of termination.

The de los Pinos Employment Agreement contains non-competition and non-solicitation provisions that apply during Dr. de los Pinos’s employment with us and for one year thereafter.

Julie Feder

In August 2018, we entered into an employment offer letter, or the Feder Offer Letter, with Ms. Feder, for the position of Chief Financial Officer. The Feder Offer Letter provides for Ms. Feder’s at-will employment, base salary, and target annual bonus. Ms. Feder is eligible to participate in the employee benefit plans available to our employees, subject to the terms of those plans.

Pursuant to the Feder Offer Letter, in the event that Ms. Feder’s employment is terminated by us without “cause” (as defined in the Feder Offer Letter), subject to her execution of a release within 60 days of such termination, she will be entitled to receive (i) continuation of her annual base salary for nine months and (ii) subject to Ms. Feder’s timely election to continue COBRA health coverage and copayment of premium amounts at the applicable active employees’ rate, a monthly cash payment equal to the amount that we would have paid to provide health insurance to Ms. Feder for nine months.

Ms. Feder has also entered into a Confidential Information, Non-Solicitation, and Invention Assignment Agreement with us that contains non-solicitation and non-disclosure provisions that apply during and for one year following her employment with us.

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Cadmus Rich, M.D.

On October 16, 2023, Dr. Rich resigned as Chief Medical Officer and transitioned into the role of Senior Clinical Advisor until November 7, 2023, or the Departure Date. Following the Departure Date, pursuant to a Resignation and Consulting Agreement with us, or the Consulting Agreement, Dr. Rich will remain with our company as Senior Clinical Advisor for an additional period of nine months beginning on the Departure Date, or the Consulting Period. Pursuant to the Consulting Agreement, Dr. Rich will be entitled to continued vesting of his restricted stock units and stock options, subject to the terms and conditions of 2021 Plan and associated restricted stock unit award agreements and stock option agreements. In connection with Dr. Rich’s resignation, we and Dr. Rich entered into a Transition and Release Agreement, or the Transition Agreement, effective on November 7, 2023. Pursuant to the Transition Agreement and subject to entering into a release of claims in favor of our company, Dr. Rich is entitled to receive (i) severance pay equal to continuation of his annual base salary for nine months and (ii) subject to Dr. Rich’s timely election to continue COBRA health coverage and copayment of premium amounts at the applicable active employees’ rate, a monthly cash payment equal to the amount that our company would have paid to provide health insurance to Dr. Rich until the earlier of nine months, eligibility for medical care coverage through other employment or termination of eligibility under COBRA. Any continued vesting relating to Dr. Rich’s existing equity awards were subject, upon the Departure Date, to his entry into the Consulting Agreement. The Transition Agreement also includes customary confidentiality and non-disparagement provisions.

Compensation Risk Assessment

We believe that although a portion of the compensation provided to our executive officers and other employees is performance-based, our executive compensation program does not encourage excessive or unnecessary risk taking. This is primarily due to the fact that our compensation programs are designed to encourage our executive officers and other employees to remain focused on both short-term and long-term strategic goals, in particular in connection with our pay-for-performance compensation philosophy. As a result, we do not believe that our compensation programs are reasonably likely to have a material adverse effect on us.

Outstanding Equity Awards at Fiscal 2023 Year-End

The following table sets forth information regarding outstanding equity awards held by our named executive officers as of fiscal year 2023:

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OPTION AWARDS (1) STOCK AWARDS

(1)

Each of the outstanding equity awards in the table above granted prior to our IPO was granted pursuant to our Amended and Restated 2009 Stock Option and Restricted Stock Plan, or the 2009 Plan, or our 2018 Equity Incentive Plan, or the 2018 Plan. Each of the outstanding equity awards in the table above granted following our IPO was granted pursuant to our 2021 Stock Option and Incentive Plan, or the 2021 Plan.

(2)

Amounts are equal to $8.86, the closing price of our common stock on December 29, 2023, the last trading day of 2023, times the number of unvested restricted stock units.

(3)

The restricted stock units vest in four equal annual installments following January 23, 2023.

(4)

25% of the shares subject to this stock option vest on the first anniversary of January 23, 2023 with the remainder vesting thereafter in 36 equal monthly installments.

(5)

The restricted stock units vest in four equal annual installments following October 28, 2021.

(6)

25% of the shares subject to this stock option vest on the first anniversary of October 28, 2021 with the remainder vesting thereafter in 36 equal monthly installments.

(7)

The shares vest in 48 equal monthly installments beginning on the one-month anniversary of the vesting commencement date of June 28, 2021.

(8)

The shares vest in 48 equal monthly installments beginning on the one-month anniversary of the vesting commencement date of February 6, 2020.

(9)

Dr. Rich resigned as Chief Medical Officer effective October 16, 2023 and departed as an employee on November 7, 2023. Pursuant to the Consulting Agreement, Dr. Rich shall continue to vest in all outstanding options and restricted stock units during a nine-month consulting period, as described above under “—Executive Employment Arrangements.”

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Non-Employee Director Compensation

The following table presents the total compensation for each person who served as a non-employee member of our Board and received compensation for such service during fiscal year 2023. Directors who also serve as employees received no additional compensation for their service as directors. During fiscal year 2023, Elisabet de los Pinos, Ph.D., our Chief Executive Officer, was a member of our Board, as well as an employee, and received no additional compensation for her services as a director. See the section titled “2023 Summary Compensation Table” for more information about her compensation in fiscal year 2023.

2023 Director Compensation Table

NAME FEES EARNED OR PAID IN CASH ($) OPTION AWARDS ($) (1)(2) TOTAL ($)

Giovanni Mariggi, Ph.D. (3) — — —

Karan Takhar (5) — — —

(1)

Amounts represent the aggregate grant date fair value of option awards granted to our directors during our fiscal year ended December 31, 2023, computed in accordance with FASB ASC Topic 718. A discussion of the assumptions used in determining grant date fair value may be found in Note 9 to our consolidated financial statements included in this Annual Report for the fiscal year ended December 31, 2023. This amount does not correspond to the actual value that may be recognized by the director upon exercise of the applicable award or sale of the underlying shares of stock. Except as noted below, none of our directors held options to purchase our common stock or any other stock awards as of December 31, 2023.

(2)

As of December 31, 2023, none of our non-employee directors held unvested stock awards. The table below reflects the aggregate number of outstanding stock options held by our non-employee directors as of December 31, 2023:

Giovanni Mariggi, Ph.D. —

Rajesh Parekh, Ph.D. 48,000

Sapna Srivastava, Ph.D. 101,649

Karan Takhar —

(3)

Dr. Mariggi has waived all compensation and stock options for which he would otherwise be eligible as a non-employee director.

(4)

These cash fees were paid directly to a fund affiliated with Dr. Parekh’s employer, Advent Life Sciences.

(5)

Mr. Takhar has waived all compensation and stock options that he would otherwise be eligible to receive for his service as a non-employee director.

Non-Employee Director Compensation Policy

Our non-employee directors are compensated pursuant to a formal policy pursuant to which we pay our non-employee directors a cash retainer for service on our Board and for service on each committee on which the director is a member. The Chair of each committee receives a higher retainer for such service. The fees paid to non-employee directors for service on our Board and for service on each committee of our Board on which the director is a member are as follows:

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Board of Directors: 

Annual retainer for non-executive chair $ 30,000

Audit Committee: 

Members (other than chair) $ 7,500

Retainer for chair $ 15,000

Compensation Committee: 

Members (other than chair) $ 5,000

Retainer for chair $ 10,000

Nominating and Corporate Governance Committee: 

Members (other than chair) $ 4,000

Retainer for chair $ 8,000

In addition, the non-employee director compensation policy provides that, upon initial election to our Board, each non-employee director will be granted an option to purchase 32,000 shares of our common stock, or the Initial Grant. The Initial Grant will vest in equal installments on the first, second and third anniversaries of the grant date, subject to continued service through the applicable vesting date. Furthermore, on the date of each annual meeting of stockholders, each non-employee director who continues as a non-employee director following such meeting will be granted an annual option to purchase 16,000 shares of our common stock, or the Annual Grant. The Annual Grant will vest in full on the earlier of (i) the first anniversary of the grant date or (ii) our next annual meeting of stockholders, subject to continued service through the applicable vesting date. Such awards are subject to full accelerated vesting upon the sale of our company.

We will reimburse all reasonable out-of-pocket expenses incurred by directors for their attendance at meetings of our Board or any committee thereof.

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

Securities Authorized for Issuance Under Equity Compensation Plans

The following table provides information as of December 31, 2023 with respect to the shares of our common stock that may be issued under our existing equity compensation plans.

(a) (b) (c)

Equity compensation plans not approved by security holders — — —

(1)

Includes the following plans: the 2009 Plan, the 2018 Plan, the 2021 Plan, and our 2021 Employee Stock Purchase Plan, or the 2021 ESPP.

(2)

Consists of 5,030,351 shares issuable upon the exercise of outstanding options under the 2009 Plan, the 2018 Plan, and the 2021 Plan and 1,093,402 shares issuable upon the vesting of restricted stock units. This does not include purchase rights under the 2021 ESPP because the purchase right (and therefore the number of shares to be purchased) will not be determined until the end of the current purchase period. Since restricted stock units do not have any exercise price, such units are not included in the weighted average exercise price calculation.

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(3)

As of December 31, 2023, a total of 3,307,871 shares of our common stock have been reserved for issuance pursuant to the 2021 Plan, which number excludes the 2,457,539 shares that were added to the plan as a result of the automatic annual increase on January 1, 2024. The 2021 Plan provides that the number of shares reserved and available for issuance under the plan will automatically increase each January 1, beginning on January 1, 2022, by 5% of the outstanding number of shares of our common stock on the immediately preceding December 31 or such lesser number of shares as determined by the Compensation Committee. This number will be subject to adjustment in the event of a stock split, stock dividend or other change in our capitalization. The shares of common stock underlying any awards that are forfeited, cancelled, held back upon exercise or settlement of an award to satisfy the exercise price or tax withholding, reacquired by us prior to vesting, satisfied without the issuance of stock, expire or are otherwise terminated, other than by exercise, under the 2021 Plan, the 2018 Plan and the 2009 Plan will be added back to the shares of common stock available for issuance under the 2021 Plan. Our company no longer makes grants under the 2009 Plan and 2018 Plan. As of December 31, 2023, a total of 947,639 shares of our common stock have been reserved for issuance pursuant to the 2021 ESPP, which number excludes the 335,217 shares that were added to the plan as a result of the automatic annual increase on January 1, 2024. The 2021 ESPP provides that the number of shares reserved and available for issuance under the plan will automatically increase each January 1, beginning on January 1, 2022, by the lesser of (i) 335,217 shares of our common stock, (ii) 1% of the outstanding number of shares of our common stock on the immediately preceding December 31 or (iii) such lesser number of shares as determined by the Compensation Committee. This number will be subject to adjustment in the event of a stock split, stock dividend or other change in our capitalization.

Security Ownership of Certain Beneficial Owners

The following table sets forth information, to the extent known by us or ascertainable from public filings, with respect to the beneficial ownership of our common stock as of March 20, 2024 by:

each of our directors;

each of our named executive officers;

all of our directors and executive officers as a group; and

each person, or group of affiliated persons, who is known by us to beneficially own greater-than-5.0% of our common stock.

The column entitled “Shares Beneficially Owned” is based on a total of 49,504,405 shares of our common stock outstanding as of March 20, 2024.

Beneficial ownership is determined in accordance with the rules and regulations of the SEC and includes voting or investment power with respect to our common stock. Shares of our common stock subject to options that are currently exercisable or exercisable within 60 days of March 20, 2024 are considered outstanding and beneficially owned by the person holding the options for the purpose of calculating the percentage ownership of that person but not for the purpose of calculating the percentage ownership of any other person. Except as otherwise noted, the persons and entities in this table have sole voting and investing power with respect to all of the shares of our common stock beneficially owned by them, subject to community property laws, where applicable.

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Name and address of beneficial owner (1) Shares Beneficially Owned Percentage

> 5% Stockholders:

Matrix Capital Management Master Fund, LP (2) 6,922,870 14.0%

Citadel-Multi Strategy Equities Master Fund Ltd. (5) 3,631,494 7.3%

Entities affiliated with Medicxi (6) 3,039,892 6.1%

Named Executive Officers and Directors:

Giovanni Mariggi, Ph.D. — —

Sapna Srivastava, Ph.D. (12) 72,243 *

Karan Takhar — —

* Represents beneficial ownership of less than one percent.

(1)

Unless otherwise indicated, the address for each beneficial owner is c/o Aura Biosciences, Inc., 80 Guest Street, Boston, MA 02135.

(2)

Information herein is based on the Schedule 13D/A filed with the SEC on November 9, 2023, jointly, by Matrix Capital Management Company LP, or Investment Manager, and David E. Goel, or together with Investment Manager, the Reporting Persons. Matrix Capital Management Master Fund, LP, or Matrix is the record owner of 6,922,870 shares of common stock. Investment Manager is the investment advisor to Matrix with respect to the shares of common stock held by Matrix. Mr. Goel serves as the Managing General Partner of Investment Manager with respect to the shares of common stock held by Matrix. Karan Takhar, a member of our Board, is a Senior Managing Director of Matrix and may be deemed to have voting and dispositive power over the shares held by Matrix. The mailing address for Matrix is 1000 Winter Street, Suite 4500, Waltham, Massachusetts 02451.

(3)

Information herein is based on the Schedule 13G/A filed with the SEC on December 11, 2023, jointly, by Eventide Asset Management, LLC, or Eventide, Finny Kuruvilla, M.D. Ph. D., and Robin C. John, or collectively, the Reporting Persons, with respect to the shares owned by Eventide. Eventide Healthcare & Life Sciences Fund, or Eventide Fund, a registered investment company, is the record owner of 5,802,682 shares of common stock. Eventide is the investment advisor to Eventide Fund Eventide. Finny Kuruvilla, M.D. Ph. D., and Robin C. John have the shared power to vote or direct the vote of, and/or shared power to dispose or to direct the disposition of, the shares held by Eventide and Eventide Fund. The address for each of the persons and entities named in this footnote is One International Place, Suite 4210, Boston, MA 02110.

(4)

Information herein is based on the Schedule 13G/A filed with the SEC on February 7, 2024, jointly, by Adage Capital Partners, L.P., or ACP, Adage Capital Partners GP, L.L.C., or ACPGP, Adage Capital Management, L.P., or ACM, Robert Atchinson and Phillip Gross, or together, the Reporting Persons. ACP is the record owner of 4,225,000 shares of common stock. ACPGP is the general partner of ACP. ACM is the investment manager of ACP. Mr. Atchinson is (a) a managing member of Adage Capital Advisors, L.L.C., or ACA, managing member of ACPGP, and (b) a managing member of Adage Capital Partners LLC, or ACPLLC, general partner of ACM. Mr. Gross is (a) a managing member of ACA, managing member of ACPGP, and (b) a managing member of ACPLLC, general partner of ACM. Mr. Atchinson and Mr. Gross have shared power to vote the shares beneficially owned by ACP. The address for ACP, Mr. Atchinson and Mr. Gross is 200 Clarendon Street, 52nd floor, Boston, Massachusetts 02116.

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(5)

Information herein is based on the Schedule 13G/A filed with the SEC on February 14, 2024, jointly, by Citadel Advisors LLC, or Citadel Advisors, Citadel Advisors Holdings LP, or CAH, Citadel GP LLC, or CGP, Citadel Securities LLC, or Citadel Securities, Citadel Securities Group LP, or CALC4, Citadel Securities GP LLC, or CSGP, and Kenneth Griffin, or collectively, the Reporting Persons, with respect to the shares owned by Citadel Multi-Strategy Equities Master Fund Ltd., or Citadel, CRBU Holdings LLC, or CRBH, and Citadel Securities. Citadel is the record owner of 3,568,099 shares of common stock, CRBH is the record owner of 37,967 shares of common stock and Citadel Securities is the record owner of 25,428 shares of common stock. Citadel Advisors is the portfolio manager of Citadel. CAH is the sole member of Citadel Advisors. CGP is the general partner of CAH. CALC4 is the non-member manager of CRBH and Citadel Securities. CSGP is the general partner of CALC4. Kenneth Griffin owns a controlling interest in CGP and CSGP and may be deemed to have shared power to vote or direct the vote of, and/or shared power to dispose or to direct the disposition of, the shares held by Citadel, CRBU and Citadel Securities. The foregoing should not be construed as an admission that Mr. Griffin or any of the Citadel-related entities is the beneficial owner of any of our securities other than the securities actually owned by such person (if any). The address for each of the persons and entities named in this footnote is Southeast Financial Center, 200 S. Biscayne Blvd., Suite 3300, Miami, Florida 33131

(6)

Information herein is based on the Schedule 13D filed with the SEC on November 10, 2021, jointly, by Medicxi Growth I LP, or Growth I, Medicxi Growth Co-Invest I LP, Growth Co-Invest I, and, together with Growth I, the Medicxi Funds, Medicxi Growth I GP Limited, or Growth I GP, and Medicxi Ventures Management (Jersey) Limited, or Medicxi Manager and, collectively with the Medicxi Funds and Growth I GP, the Reporting Person. Growth I is the record owner of 2,969,352 shares of common stock and Growth Co-Invest I is the record owner of 70,540 shares of common stock. Growth I GP is the sole managing general partner of the Medicxi Funds, and Medicxi Manager is the sole manager of the Medicxi Funds. Growth I GP and Medicxi Manager may be deemed to have voting and dispositive power over the shares held by the Medicxi Funds. The share ownership reported by the Medicxi Funds does not include any shares beneficially owned by Index Ventures Life VI (Jersey) LP and Yucca (Jersey) SLP, and each of the Medicxi Funds and their affiliates disclaim beneficial ownership of the securities beneficially owned by Index Ventures Life VI (Jersey) LP, Yucca (Jersey) SLP and their affiliates. Giovanni Mariggi, Ph.D. is a member of Medicxi and a member of our Board. The address of the principal business office of each of the Medicxi Funds is c/o Intertrust Fund Services (Jersey) Limited, 44 Esplanade, St. Helier, Jersey JE4 9WG.

(7)

Consists of (i) 131,412 shares of common stock held of record by EdlP Revocable Trust, (ii) [36,503] shares of common stock issuable upon the vesting of restricted stock units within 60 days after March 20, 2024, and (iii) options to purchase 1,366,420 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(8)

Consists of options to purchase 225,865 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(9)

Consists of (i) 13,305 shares of common stock issuable upon the vesting of restricted stock units within 60 days after March 20, 2024, and (ii) options to purchase 323,243 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(10)

Consists of (i) 139,672 shares of common stock held by Velosity Capital Management LLC, an entity that Mr. Johnson is the sole member of, (ii) 135,667 shares of common stock held individually, (iii) 150,000 shares of common stock held in irrevocable trusts, and (iv) options to purchase [297,295] shares of our common stock that are exercisable within 60 days of March 20, 2024, which are individually held by Mr. Johnson.

(11)

Consists of options to purchase 32,000 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(12)

Consists of options to purchase 72,243 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(13)

Consists of options to purchase 66,658 shares of our common stock that are exercisable within 60 days of March 20, 2024.

(14)

Consists of 556,751 shares of our common stock, 49,808 shares of common stock issuable upon the vesting of restricted stock units within 60 days after March 20, 2024, and options to purchase 2,157,859 shares of our common stock that are exercisable within 60 days of March 20, 2024. Excludes shares held by Dr. Rich, who is not a current executive officer.

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Communications with Board of Directors

Any interested party with concerns about our company may report such concerns to the Board or the Chairman of our Board or the Chair of our Nominating and Corporate Governance Committee, by submitting a written communication to the attention of such director to c/o Aura Biosciences, Inc., 80 Guest Street

Boston, MA 02135, United States.

You may submit your concern anonymously or confidentially by postal mail. You may also indicate whether you are a stockholder, customer, supplier, or other interested party.

A copy of any such written communication may also be forwarded to our legal counsel and a copy of such communication may be retained for a reasonable period of time. The director may discuss the matter with our legal counsel, with independent advisors, with non-management directors, or with our management, or may take other action or no action as the director determines in good faith, using reasonable judgment, and applying his or her own discretion.

Communications may be forwarded to other directors if they relate to important substantive matters and include suggestions or comments that may be important for other directors to know. In general, communications relating to corporate governance and long-term corporate strategy are more likely to be forwarded than communications relating to ordinary business affairs, personal grievances, and matters as to which we tend to receive repetitive or duplicative communications.

The Audit Committee oversees the procedures for the receipt, retention, and treatment of complaints received by our company regarding accounting, internal accounting controls, or audit matters, and the confidential, anonymous submission by employees of concerns regarding questionable accounting, internal accounting controls or auditing matters. We have also established a toll-free telephone number for the reporting of such activity, which is 877-554-1974.

Board Committees

Our Board has established an Audit Committee, a Compensation Committee, and a Nominating and Corporate Governance Committee, each of which operate pursuant to a charter adopted by our Board. We believe that the composition and functioning of all of our committees comply with the applicable requirements of Nasdaq, the Sarbanes-Oxley Act of 2002 and the SEC rules and regulations that are applicable to us. We intend to comply with future requirements to the extent they become applicable to us.

The full text of our Audit Committee charter, Compensation Committee charter and Nominating and Corporate Governance charter is posted on the investor relations portion of our website at https://aurabiosciences.com/. We do not incorporate the information contained on, or accessible through, our corporate website into this Annual Report, and you should not consider it a part of this Annual Report.

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

Other than the compensation agreements and other arrangements described under “Executive Compensation” and “Non-Employee Director Compensation” in this Annual Report and the transactions described below, since January 1, 2022, there has not been and there is not currently proposed, any transaction or series of similar transactions to which we were, or will be, a party in which the amount involved exceeded, or will exceed, $120,000 (or, if less, 1% of the average of our total assets amounts at December 31, 2022 and 2023) and in which any director, executive officer, holder of five percent or more of any class of our capital stock or any member of the immediate family of, or entities affiliated with, any of the foregoing persons, had, or will have, a direct or indirect material interest.

2022 Public Offering

In December 2022, in connection with a public offering, we sold an aggregate of 7,705,000 shares of common stock, including the exercise in full by the underwriters of their exercise to purchase up to 1,005,000 shares at a public offering price of $12.00 per share, or the 2022 Public Offering. The aggregate gross proceeds to us from the 2022 Public Offering were approximately $92.5 million, before deducting underwriting discounts and commissions and other offering expenses. The following table summarizes purchases of our shares of common stock by related persons in connection with the 2022 Public Offering:

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STOCKHOLDER SHARES OF COMMON STOCK TOTAL PURCHASE PRICE

(1)

Matrix Capital Management Master Fund, LP, beneficially owns more than five percent of our outstanding capital stock. Karan Takhar is an affiliate of Matrix Capital Management Master Fund, LP and a member of our Board.

2023 Public Offering

In November 2023, in connection with a public offering, we sold an aggregate of 11,000,000 shares of common stock at a public offering price of $9.00 per share, or the 2023 Public Offering. The aggregate gross proceeds to us from the 2023 Public Offering were approximately $99.0 million, before deducting underwriting discounts and commissions and other offering expenses. The following table summarizes purchases of our shares of common stock by related persons in connection with the 2023 Public Offering:

STOCKHOLDER SHARES OF COMMON STOCK TOTAL PURCHASE PRICE

(1)

Matrix Capital Management Master Fund, LP, beneficially owns more than five percent of our outstanding capital stock. Karan Takhar is an affiliate of Matrix Capital Management Master Fund, LP and a member of our Board.

Agreements with Stockholders

In connection with our Series E convertible preferred stock financing, we entered into investors’ rights, voting and right of first refusal and co-sale agreements containing registration rights, information rights, voting rights and rights of first refusal, among other things, with certain holders of our preferred stock and certain holders of our common stock. These stockholder agreements terminated upon the closing of our IPO in November 2021, except for the registration rights granted under our investors’ rights agreement, as more fully described in our Description of Securities, filed as Exhibit 4.1 to this Annual Report.

Indemnification Agreements

We have entered into agreements to indemnify our directors and executive officers. These agreements, among other things, require us to indemnify these individuals for certain expenses (including attorneys’ fees), judgments, fines and settlement amounts reasonably incurred by such person in any action or proceeding, including any action by or in our right, on account of any services undertaken by such person on our behalf or that person’s status as a member of our Board to the maximum extent allowed under Delaware law.

Policies for Approval of Related Party Transactions

Our Board reviews and approves transactions with directors, officers and holders of five percent or more of our voting securities and their affiliates, each a related party. Prior to our IPO in November 2021, the material facts as to the related party’s relationship or interest in the transaction were disclosed to our Board prior to their consideration of such transaction, and the transaction was not considered approved by our Board unless a majority of the directors who are not interested in the transaction approved the transaction. Further, when stockholders are entitled to vote on a transaction with a related party, the material facts of the related party’s relationship or interest in the transaction were disclosed to the stockholders, who must approve the transaction in good faith.

In connection with our IPO in November 2021, we adopted a written related party transactions policy that provides that such transactions must be approved by our Audit Committee. This policy became effective on the date on which the registration statement related to our IPO was declared effective by the SEC. Pursuant to this policy, the Audit Committee has the primary responsibility for reviewing and approving or disapproving “related party transactions,” which are transactions between us and related persons in which the aggregate amount involved exceeds or may be expected to exceed $120,000 and in which a related person has or will have a direct or indirect material interest. For purposes of this policy, a related person will be defined as a director, executive officer, nominee for director, or greater than 5% beneficial owner of our common stock, in each case since the beginning of the most recently completed year, and their immediate family members.

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Director Independence

Under the Nasdaq listing rules, independent directors must comprise a majority of a listed company’s board of directors within twelve months from the date of listing. In addition, the Nasdaq listing rules require that, subject to specified exceptions, each member of a listed company’s audit, compensation and nominating and corporate governance committees be independent within twelve months from the date of listing. Audit committee members must also satisfy additional independence criteria, including those set forth in Rule 10A-3 under the Exchange Act, and compensation committee members must also satisfy the independence criteria set forth in Rule 10C-1 under the Exchange Act. Under Nasdaq listing rules, a director will only qualify as an “independent director” if, in the opinion of that company’s board of directors, that person does not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director. In order to be considered independent for purposes of Rule 10A-3 under the Exchange Act, a member of an audit committee of a listed company may not, other than in his or her capacity as a member of the audit committee, the board of directors, or any other board committee: (1) accept, directly or indirectly, any consulting, advisory, or other compensatory fee from the listed company or any of its subsidiaries, other than compensation for board service; or (2) be an affiliated person of the listed company or any of its subsidiaries. In order to be considered independent for purposes of Rule 10C-1, the board of directors must consider, for each member of a compensation committee of a listed company, all factors specifically relevant to determining whether a director has a relationship to such company which is material to that director’s ability to be independent from management in connection with the duties of a compensation committee member, including, but not limited to: the source of compensation of the director, including any consulting advisory or other compensatory fee paid by such company to the director, and whether the director is affiliated with the company or any of its subsidiaries or affiliates.

In March 2024, our Board undertook a review of the composition of our Board and its committees and the independence of each director. Based upon information requested from and provided by each director concerning his or her background, employment and affiliations, including family relationships, our Board has determined that all members of the Board, except Elisabet de los Pinos, Ph.D., are independent directors, including for purposes of Nasdaq and the SEC rules. In making that determination, our Board considered the relationships that each director has with us and all other facts and circumstances the Board deemed relevant in determining independence, including the potential deemed beneficial ownership of our capital stock by each director and respective affiliations, including non-employee directors that are affiliated with certain of our major stockholders. We expect that the composition and functioning of our Board and each of our committees will continue to comply with all applicable requirements of Nasdaq and the rules and regulations of the SEC. There are no family relationships among any of our directors or executive officers. Elisabet de los Pinos, Ph.D., is not an independent director under these rules because she is currently employed as the Chief Executive Officer and President of our company.

Director Affiliations

Some of our directors are affiliated with and serve on the Board as representatives of entities which beneficially own or owned 5% or more of our common stock, as indicated below:

Name Principal Stockholder (1)

Giovanni Mariggi, Ph.D. Entities affiliated with Medicxi

Karan Takhar Matrix Capital Management Master Fund, LP

Rajesh Parekh, Ph.D. Entities affiliated with Advent Life Sciences

(1)

Please see “—Security Ownership of Certain Beneficial Owners” for more information on director affiliations.

Item 14. Principal Accounting Fees and Services.

Our independent registered public accounting firm is Ernst & Young LLP, Boston, Massachusetts, PCAOB ID: 42. The Audit Committee has selected Ernst & Young LLP as our independent registered public accounting firm for the years ended December 31, 2023 and 2022. In addition to retaining Ernst & Young LLP to audit our consolidated financial statements for the years ended December 31, 2023 and 2022, we may engage the firm from time to time during the year to perform other services.

We incurred the following fees from Ernst & Young LLP for the audit of the financial statements and for other services provided during the years ended December 31, 2023 and 2022.

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Audit-Related fees — —

All other fees — —

(1)

Audit fees consist of fees billed for the audit of our annual consolidated financial statements, the review of our interim financial statements included in our quarterly reports on Form 10-Q, and services in connection with our securities offerings, including registration statements, responding to SEC comment letters, comfort letters and consents.

(2)

Tax fees consist of fees billed for tax compliance, tax advice and tax planning services, including the review and preparation of federal and state income tax returns.

During our 2023 and 2022 fiscal years, no services other than those discussed above were provided by Ernst & Young LLP.

Audit Committee Pre-approval Policy and Procedures

Our Audit Committee has adopted policies and procedures relating to the approval of all audit and non-audit services that are to be performed by our independent registered public accounting firm. This policy provides that we will not engage our independent registered public accounting firm to render audit or non-audit services unless the service is specifically approved in advance by our Audit Committee or the engagement is entered into pursuant to the pre-approval procedure described below.

From time to time, our Audit Committee may pre-approve specified types of services that are expected to be provided to us by our independent registered public accounting firm during the next 12 months. Any such pre-approval details the particular service or type of services to be provided and is also generally subject to a maximum dollar amount.

During our 2023 and 2022 fiscal years, no services were provided to us by Ernst & Young LLP other than in accordance with the pre-approval policies and procedures described above.

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PART IV

Item 15. Exhibits, Financial Statement Schedules.

(1)

For a list of the consolidated financial statements included herein, see “Index to the Consolidated Financial Statements” on page F-1 of this Annual Report on Form 10-K, incorporated into this Item by reference.

(2)

Financial statement schedules have been omitted because they are either not required or not applicable or the information is included in the financial statements or the notes thereto.

(3)

Exhibits:

ExhibitNumber Description

4.1* Description of Securities

117

19.1* Amended and Restated Insider Trading Policy

21.1* List of Subsidiaries of Registrant

23.1* Consent of Ernst & Young, independent registered public accounting firm.

97.1* Compensation Recovery Policy

101.SCH Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents

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

* Filed herewith.

**These certifications are furnished to the SEC pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference in such filing.

118

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

† Confidential treatment has been granted for portions of this Exhibit pursuant to Rule 406 promulgated under the Securities Act of 1933, as amended.

(1) Schedules and exhibits have been omitted from this filing pursuant to Item 601(b)(10) of Regulation S-K. The registrant agrees to furnish supplementally a copy of any omitted schedule or exhibit to the SEC upon its request; provided, however, that the registrant may request confidential treatment pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended, for any schedule or exhibit so furnished.

Item 16. Form 10-K Summary

Not applicable.

119

Index to CONSOLIDATED Financial Statements

Page

Report of Independent Registered Public Accounting Firm (PCAOB ID 42) F-2

Consolidated Balance Sheets F-3

Consolidated Statements of Operations and Comprehensive Loss F-4

Consolidated Statements of Stockholders’ Equity F-5

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 Aura Biosciences, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Aura Biosciences, Inc. (the Company) as of December 31, 2023 and 2022, the related consolidated statements of operations and comprehensive loss, stockholders’ equity and cash flows for each of the two years in the period ended December 31, 2023, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles.

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/ Ernst & Young LLP

We have served as the Company’s auditor since 2016.

Boston, Massachusetts

March 27, 2024

F-2

Aura Biosciences, Inc.

Consolidated Balance Sheets

(in thousands, except share and per share amounts)

Assets

Current assets:

Restricted cash and deposits 19 20

Prepaid expenses and other current assets 5,625 7,871

Restricted cash and deposits, net of current portion 768 768

Right of use assets - operating lease 18,854 20,671

Liabilities and Stockholders’ Equity

Current liabilities:

Short-term operating lease liability 2,687 2,963

Accrued expenses and other current liabilities 7,883 4,573

Commitments and Contingencies (Note 12)

Stockholders’ Equity:

Accumulated other comprehensive loss 539 (72 )

Total Liabilities and Stockholders’ Equity $ 255,075 $ 223,935

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

F-3

Aura Biosciences, Inc.

Consolidated Statements of Operations and Comprehensive Loss

(in thousands except share and per share data)

Year EndedDecember 31,

Operating Expenses:

Other income (expense):

Interest income, including amortization and accretion income 8,588 1,864

Gain (loss) from disposal of assets 208 (318 )

Other income (expense) (76 ) (14 )

Income tax benefit (provision), net (137 ) —

Net loss per common share—basic and diluted (1.93 ) (1.96 )

Comprehensive loss:

Other comprehensive items:

Unrealized gain (loss) on marketable securities 611 (72 )

Total other comprehensive income (loss) 611 (72 )

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

F-4

Aura Biosciences, Inc.

Consolidated Statements of Stockholders’ Equity

(in thousands, except share data)

Additional Accumulated Total

Common Stock Paid-In Accumulated Other Comprehensive Stockholders’

Shares Amount Capital Deficit Loss Amount Equity

Stock-based compensation expense — — 8,772 — — 8,772

Employee Stock Purchase Plan Issuance 14,911 — 128 — — 128

Vesting of restricted stock 43,162 — 0 — — —

Unrealized gain on marketable securities — — 0 — 611 611

Additional Accumulated Total

Common Stock Paid-In Accumulated Other Comprehensive Stockholders’

Shares Amount Capital Deficit Loss Amount Equity

Stock-based compensation expense — — 6,412 — 6,412

Vesting of restricted stock 51,444 — — — —

Unrealized loss on marketable securities — — — — (72) (72)

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

F-5

Aura Biosciences, Inc.

Consolidated Statements of Cash Flows

(in thousands)

Twelve Months EndedDecember 31,

Cash flows from operating activities:

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

Accretion on marketable securities (3,992 ) (527 )

Stock-based compensation expense 8,772 6,412

(Loss) gain on disposal of property and equipment 208 (22 )

Changes in operating assets and liabilities:

Prepaid expenses and other assets 3,579 (3,253 )

Other long-term assets (86 ) (423 )

Accrued expenses and other liabilities 3,310 234

Operating lease liabilities (1,322 ) (744 )

Net cash used in operating activities (63,847 ) (54,601 )

Cash flows from investing activities:

Purchases of property and equipment (709 ) (1,094 )

Source: SEC EDGAR (public domain) · 10-K for the period ended 2023-12-31, filed 2024-03-27 · accession 0000950170-24-036814

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