The following discussion and analysis of our financial condition and results of operations should be read together with our financial statements and the other financial information appearing elsewhere in this Quarterly Report on Form 10-Q. These statements generally relate to future events or to our future financial performance and involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. The following discussion and analysis contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Our actual results and the timing of events may differ materially from those discussed in our forward-looking statements as a result of various factors, including those discussed below and those discussed in the section titled "Risk Factors" included in this Quarterly Report on Form 10-Q.

Forward-looking statements may include, but are not limited to, statements concerning the following:



    •   the size of the market opportunity and the number of patients who suffer
        from the diseases and disorders we are targeting;


    •   our expectations regarding the clinical development of OTO-313, including
        availability of top-line results from the ongoing Phase 2 clinical trial
        in tinnitus patients;


    •   our expectations regarding the clinical development of OTO-413, including
        availability of top-line results from the upcoming Phase 1/2 expansion
        clinical trial in hearing loss patients;


    •   our expectations regarding the future development of OTO-825 and our
        strategic collaboration with AGTC to develop and commercialize a gene
        therapy for congenital hearing loss;


    •   our expectations regarding the potential impacts on our business,
        preclinical programs and clinical trials due to the COVID-19 pandemic;


  • the timing or likelihood of regulatory filings and approvals;


    •   our expectations regarding the future development of other product
        candidates, including but not limited to our development plans for our
        OTO-510 and OTO-6XX programs;


    •   our expectations regarding the evaluation of strategic alternatives for
        OTIPRIO;


    •   our plans regarding the use of contract manufacturers for the production
        of our product candidates for clinical trials and, if approved, commercial
        use;


    •   our plans and ability to effectively establish and manage our own sales
        and marketing capabilities, or seek and establish collaborative partners,
        to commercialize our products;


    •   our ability to advance product candidates into, and successfully complete,
        clinical trials;


    •   the implementation of our business model, strategic plans for our
        business, product candidates and technology;


    •   the initiation, timing, progress and results of future nonclinical studies
        and clinical trials;


    •   the scope of protection we are able to obtain and maintain for
        intellectual property rights covering our product candidates and
        technology;


    •   estimates of our expenses, future revenue, capital requirements and our
        needs for additional financing;


    •   our expectations regarding the benefits of the loan provided by Oxford
        Finance LLC;


  • our financial performance;


    •   our expectations and statements regarding the benefits, pricing, market
        size, opportunity and growth potential for OTO-313, OTO-413, OTO-825 and
        our other product candidates, if approved for commercial use;


    •   our expectations and statements regarding the adoption and use of OTO-313,
        OTO-413 and OTO-825, if approved;


    •   our expectations regarding potential coverage and reimbursement relating
        to OTO-313, OTO-413 and OTO-825, if approved, or any other approved
        product candidates;


  • accounting principles, policies and estimates; and


  • developments and projections relating to our competitors and our industry.


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These forward-looking statements are subject to a number of risks, uncertainties, and assumptions, including but not limited to: delays and disruption resulting from the COVID-19 pandemic and governmental responses to the pandemic, including current and future impacts to our operations, our limited operating history and our expectation that we will incur significant losses for the foreseeable future; our ability to obtain additional financing; the advancement of our product candidates, such as OTO-313, OTO-413 and OTO-825 through clinical development to regulatory approval and commercialization, the uncertainties inherent in the clinical drug development process, including, without limitation, our ability to adequately demonstrate the safety and efficacy of our product candidates, the nonclinical and clinical results for our product candidates, which may not support further development, and challenges related to patient enrollment in clinical trials; our ability to obtain regulatory approval for our product candidates; side effects or adverse events associated with our product candidates; competition in the biopharmaceutical industry; our dependence on third parties to conduct nonclinical studies and clinical trials; our dependence on third parties for the manufacture of OTIPRIO and our product candidates; our ability to protect our intellectual property related to OTIPRIO and our product candidates in the United States and throughout the world; expectations regarding potential market size, opportunity and growth; our ability to manage operating expenses; implementation of our business model and strategic plans for our business, product candidates and technology; the risk of the occurrence of any event, change or other circumstance that could give rise to the termination of promotional or collaboration agreements; the risks of the occurrence of any event, change or other circumstances that could impact our ability to repay or comply with the terms of the loan provided by Oxford Finance LLC; and other risks. These forward-looking statements reflect our beliefs and views with respect to future events and are based on estimates and assumptions as of the date of this Quarterly Report on Form 10-Q and are subject to risks and uncertainties.

We discuss many of these risks in greater detail in the section titled "Risk Factors" included in Part II, Item 1A and elsewhere in this report. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make.

Given these uncertainties, you should not place undue reliance on these forward-looking statements. We qualify all the forward-looking statements in this Quarterly Report on Form 10-Q by these cautionary statements. Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in any forward-looking statements, whether as a result of new information, future events or otherwise.

Otonomy, the Otonomy logo, OTIPRIO, OTIVIDEX and other trademarks or service marks of Otonomy appearing in this report are the property of Otonomy. Trade names, trademarks and service marks of other companies appearing in this report are the property of their respective holders. We have generally omitted the ®, ™ and other designations, as applicable, for the trademarks used in this report.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance or events and circumstances reflected in the forward-looking statements will be achieved or occur. Moreover, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this Quarterly Report on Form 10-Q to conform these statements to actual results or to changes in our expectations, except as required by law.

You should read this Quarterly Report on Form 10-Q and the documents that we reference in this Quarterly Report on Form 10-Q and have filed with the SEC as exhibits to this Quarterly Report on Form 10-Q with the understanding that our actual future results, levels of activity, performance, and events and circumstances may be materially different from what we expect.

Overview

We are a biopharmaceutical company dedicated to the development of innovative therapeutics for neurotology. We pioneered the application of drug delivery technology to the ear and are utilizing that expertise and proprietary position to develop products that achieve sustained drug exposure from a single local administration. Our primary focus is currently on the advancement of three programs in our broad pipeline: OTO-313 in a Phase 2 trial for tinnitus; OTO-413, for which we are planning to initiate a Phase 1/2 expansion trial for hearing loss; and OTO-825, a gene therapy for congenital hearing loss, in investigational new drug (IND)-enabling activities. Additionally, we are conducting preclinical development for OTO-510 in otoprotection and OTO-6XX for severe hearing loss. We estimate, based on an external market report commissioned by us, that approximately 28 million people in the United States suffer from moderate to severe tinnitus or hearing loss.

OTO-313 is a sustained-exposure formulation of gacyclidine, a potent and selective NMDA receptor antagonist, in development for the treatment of tinnitus. In July 2020, we announced positive top-line results from a Phase 1/2 clinical trial of OTO-313 in patients with persistent tinnitus of at least moderate severity. We have recently initiated a Phase 2 clinical trial for OTO-313, with top-line results expected in mid-2022.



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OTO-413 is a sustained-exposure formulation of BDNF in development for the repair of cochlear synaptopathy, an underlying pathology in age-related and noise-induced hearing loss. In December 2020, we announced positive top-line results from a Phase 1/2 clinical trial of OTO-413, demonstrating that a single intratympanic injection of OTO-413 was well-tolerated and showed therapeutic activity across multiple speech-in-noise hearing tests. We plan to initiate an expansion of the Phase 1/2 trial in the second quarter of 2021 to evaluate a refined study protocol in additional hearing loss patients, with top-line results expected in mid-2022.

OTO-825 is a gene therapy targeting mutations in the GJB2 gene, which is the most common cause of congenital hearing loss. In October 2019, Otonomy and AGTC announced a collaboration to develop an adeno-associated virus (AAV) based gene therapy for patients with hearing loss caused by the GJB2 mutation. Based on preclinical studies, we have selected OTO-825 as a clinical candidate and are initiating activities required for an IND filing. We plan to provide an update on this program in mid-2021.

OTO-510 is a product candidate in preclinical development for the prevention of cisplatin-induced hearing loss (CIHL), which routinely occurs in patients undergoing chemotherapy with platinum-based agents. OTO-510 has demonstrated improved otoprotection in preclinical CIHL studies compared to other agents in development, and is being formulated to provide sustained exposure from a single intratympanic injection. The goal of the OTO-510 program is to preserve hearing without protecting the tumor.

The OTO-6XX program is focused on hair cell repair and regeneration for the treatment of severe hearing loss. In July 2020, we entered into a license agreement with Kyorin that provides us with exclusive worldwide rights to develop, manufacture and commercialize a novel compound from Kyorin that has demonstrated the ability to induce hair cell regeneration in a nonclinical proof-of-concept model. We are continuing to evaluate the potential of this compound for our OTO-6XX program.

OTIVIDEX is a product candidate for the treatment of Ménière's disease for which we completed three Phase 3 clinical trials. The AVERTS-1 trial failed its primary endpoint (p value = 0.62), while the parallel AVERTS-2 trial was successful (p value = 0.029). In order to support the filing of a New Drug Application to the FDA, we conducted a third trial with results announced in February 2021. This trial failed to achieve its primary endpoint, which is based on the intent-to-treat population (p value = 0.312). The trial did achieve statistical significance for the per protocol population (p value = 0.031). Based on a comprehensive analysis of the results, we have decided to not pursue additional development of OTIVIDEX.

In addition, we developed, received FDA approval for and commercially launched OTIPRIO (ciprofloxacin otic suspension) for use during tympanostomy tube placement (TTP) surgery in pediatric patients. OTIPRIO was also approved by the FDA for the treatment of acute otitis externa (AOE). In June 2020, we entered into a co-promotion agreement with ALK to support the promotion of OTIPRIO for the treatment of AOE in physician offices in the United States, which was amended in October 2020 to include promotion of OTIPRIO for use during TTP surgery in pediatric patients. Following the negative Phase 3 trial results for OTIVIDEX, we notified ALK of our intent to evaluate strategic alternatives for the product.

We have a limited operating history. Since our inception in 2008, we have devoted substantially all our efforts to developing and commercializing OTIPRIO, developing OTIVIDEX and our current product candidates, and providing general and administrative support for these operations. In July 2020, we sold in a public offering 17,275,000 shares of our common stock, which includes the underwriters' full exercise of their option to purchase additional shares, and we sold pre-funded warrants to purchase 4,000,000 shares of our common stock, for $64.2 million in total net proceeds after deducting underwriting discounts and commissions and offering expenses. As of March 31, 2021, we had cash, cash equivalents and short-term investments of $73.8 million and an outstanding debt balance of $15.2 million.

We have never been profitable, and as of March 31, 2021, we had an accumulated deficit of $516.8 million. Our net losses were $12.2 million and $11.8 million for the three months ended March 31, 2021 and 2020, respectively. Substantially all our net losses have resulted from research and development expenses related to our clinical trials and product development activities, commercialization expenses to launch OTIPRIO in the U.S. market, and other general and administrative expenses.

In April 2021, we sold in a public offering 8,298,890 shares of our common stock, which includes the underwriters' full exercise of their option to purchase additional shares, and we sold pre-funded warrants to purchase 7,111,110 shares of our common stock, for approximately $32.1 million in total net proceeds after deducting underwriting discounts and commissions and estimated offering expenses.



                                      -17-

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We expect to continue to incur significant expenses and operating losses for the foreseeable future as we continue to develop, seek regulatory approval, and, if approved, commercialize our product candidates. In the near term, we anticipate our expenses will continue to be substantial as we:



  • conduct clinical development of OTO-313 and OTO-413;


  • conduct preclinical development of OTO-825, OTO-510 and OTO-6XX;


  • contract to manufacture our product candidates;


  • evaluate opportunities for development of additional product candidates;


  • maintain and expand our intellectual property portfolio;


    •   hire additional staff as necessary to execute our product development
        plan; and


  • operate as a public company.

We believe that our existing cash, cash equivalents and short-term investments will be sufficient to fund our operations for a period of at least twelve months from the date of this report. When additional financing is required, we anticipate we will seek funding through public or private equity or debt financings or other sources, such as potential collaboration arrangements. We may not be able to raise capital on terms acceptable to us, or at all. Our failure to raise capital could have a negative impact on our financial condition and our ability to pursue our business strategies.

In November 2008, we entered into an exclusive license agreement with the Regents of the University of California (UC). Under the license agreement, UC granted us an exclusive license under their rights to patents and applications that are co-developed and co-owned with us for the treatment of human otic diseases. Our financial obligations under the license agreement include development and regulatory milestone payments of up to $2.7 million per licensed product, of which $1.9 million has been paid for OTIPRIO, $0.8 million has been paid for OTIVIDEX, $0.4 million has been paid for OTO-413, and $0.1 million has been paid for OTO-311 (but such milestone payments are reduced by 75% for any orphan indication product), and a low single-digit royalty on net sales by us or our affiliates of licensed products. In addition, for each sublicense we grant we are obligated to pay UC a fixed percentage of all royalties as well as a sliding-scale percentage of non-royalty sublicense fees received by us under such sublicense, with such percentage depending on the licensed product's stage of development when sublicensed to such third party. We have the right to offset a certain amount of third-party royalties, milestone fees or sublicense fees against the foregoing financial obligations, provided such third-party royalties or fees are paid by us in consideration for intellectual property rights necessary to commercialize a licensed product.

In April 2013, we entered into an exclusive license agreement with DURECT Corporation (Durect), as part of an asset transfer agreement between us and IncuMed LLC, an affiliate of the NeuroSystec Corporation. Under this license agreement, Durect granted us an exclusive, worldwide, royalty-bearing license under Durect's rights to certain patents and applications covering our OTO-313 product candidate, as well as certain related know-how. Under this license agreement and the asset transfer agreement, we are obligated to make one-time milestone payments of up to $7.5 million for the first licensed product. Upon commercializing a licensed product, we are obligated to pay Durect tiered, low single-digit royalties on annual net sales by us or our affiliates or sublicensees of the licensed products, and we have the right to offset a certain amount of third-party license fees or royalties against such royalty payments to Durect. In addition, each sublicense we grant to a third party is subject to payment to Durect of a low double-digit percentage of all non-royalty payments we receive under such sublicense. Additionally, we are also obligated to pay the Institut National de la Santé et de la Recherche Médicale (INSERM), on behalf of Durect, for a low single-digit royalty payment on net sales by us or our affiliates or sublicensees upon commercialization of the licensed product. The foregoing royalty payment obligation to Durect would continue on a product-by-product and country-by-country basis until expiration or determination of invalidity of the last valid claim within the licensed patents that cover the licensed product, and the payment obligation to INSERM would continue so long as Durect's license from INSERM remains in effect.

Given the unprecedented and evolving nature of the COVID-19 pandemic, including the rise of new variants, there continues to be significant uncertainty about the progression and ultimate impact of the pandemic on our business operations. We have taken steps to mitigate the impact of the COVID-19 pandemic on our clinical trials, including developing processes to ensure the integrity of data collection from enrolled patients and supporting sites able to enroll patients, among other activity. Nonetheless, we do not know the full extent of potential future delays or impacts on our business operations, our preclinical programs and clinical trials, healthcare systems, our financial condition, or the global economy as a whole resulting from the COVID-19 pandemic.

In addition, as a result of the COVID-19 pandemic, we have taken steps to protect the health and safety of our employees and community by generally adopting a work from home policy in line with directives from the State of California and the applicable local governments, and guidance from the U.S. Centers for Disease Control and Prevention (CDC). On-site activities have been restricted to certain essential facility and laboratory support functions and various safety protocols have been implemented.



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Financial Operations Overview

Operating Expenses

Research and development expenses

Our research and development expenses primarily consist of costs associated with the nonclinical and clinical development of our product candidates.

Our research and development expenses include:



    •   employee-related expenses, including salaries, benefits, travel and
        stock-based compensation expense;


    •   external development expenses incurred under arrangements with third
        parties, such as fees paid to CROs in connection with nonclinical studies
        and clinical trials, costs of acquiring and evaluating clinical trial data
        such as investigator grants, patient screening fees, laboratory work and
        statistical compilation and analysis, and fees paid to consultants;


    •   costs to acquire, develop and manufacture clinical trial materials,
        including fees paid to contract manufacturers;


  • payments related to licensed product candidates and technologies;


    •   costs related to compliance with drug development regulatory requirements;
        and


    •   facilities expenses which include allocated expenses for amortization of
        ROU assets, depreciation and other overhead expenses, and direct costs for
        laboratory and other supplies.

We expense our internal and third-party research and development expenses as incurred.



The following table summarizes our research and development expenses (in
thousands):



                                            Three Months Ended March 31,
                                              2021                2020
Third-party development costs:
OTIVIDEX                                  $         309       $       1,606
OTO-313                                           1,353                 608
OTO-413                                             214                 716
Total third-party development costs               1,876               2,930

Other unallocated internal research and


  development costs                               5,784               4,742

Total research and development costs $ 7,660 $ 7,672

We expect our research and development expenses to continue to be substantial for the foreseeable future as we advance our product candidates through their respective development programs. The process of conducting nonclinical studies and clinical trials necessary to obtain regulatory approval is costly and time consuming. We may never succeed in achieving regulatory approval for our product candidates. The probability of success will be affected by numerous factors, including nonclinical data, clinical data, competition, manufacturing capability and commercial viability. We are responsible for all of the research and development costs for our programs.

Completion dates and completion costs can vary significantly for each of our clinical development programs and are difficult to predict. We therefore cannot estimate with any degree of certainty the costs we will incur in connection with development of our product candidates. We anticipate that we will make determinations as to which programs and product candidates to pursue and how much funding to direct to each program and product candidate on an ongoing basis in response to the results of ongoing and future clinical trials, regulatory developments, and our ongoing assessments as to each current or future product candidate's commercial potential. We may need to raise substantial additional capital in the future to complete the development of and, if approved, commercialize, our product candidates. We may enter into collaborative agreements in the future in order to conduct clinical trials and gain regulatory approval of our product candidates, particularly in markets outside of the United States. We cannot forecast which programs or product candidates may be subject to future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and overall capital requirements.



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The costs of clinical trials may vary significantly over the life of a program owing to the following:



  • per patient trial costs;


  • the number of sites included in the trials;


  • the countries in which the trials are conducted;


  • changes in regulatory and legal requirements for clinical trials;


  • the length of time required to enroll eligible patients;


  • the number of patients that participate in the trials;


  • the number of doses that patients receive;


  • the drop-out or discontinuation rates of patients;


    •   potential additional safety monitoring or other studies requested by
        regulatory agencies;


  • the duration of patient follow-up;


  • the phase of development of the product candidate;


    •   the manufacturing process and complexity of, expiration of, and amount of
        the drug product required for the clinical trials;


  • the efficacy and safety profile of the product candidate; and


  • the impacts of COVID-19.

Selling, general and administrative expenses

Our selling, general and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, travel and stock-based compensation expense, as well as other related costs for our employees and consultants in executive, administrative, finance and human resource functions. Other selling, general and administrative expenses include facility-related costs not otherwise included in research and development, costs associated with prosecuting and maintaining our patent portfolio and corporate legal expenses, costs required for public company activities and infrastructure necessary for the general conduct of our business, and OTIPRIO product support expenses and profit-sharing fees payable to our co-promotion partners, which are reduced by payments received from them.

We expect our selling, general and administrative expenses to be substantial as we support development of our product candidates, and as we incur ongoing expenses related to audit, legal, regulatory, and tax-related services associated with maintaining compliance with stock exchange listing and SEC requirements, directors' and officers' liability insurance premiums, and investor relations-related expenses.

Other Income (Expense)

Other income (expense) primarily consists of interest income earned on cash and cash equivalents and short-term investments and interest expense related to our long-term debt and finance leases.

Critical Accounting Policies and Significant Judgments and Estimates

Our management's discussion and analysis of our financial condition and results of operations is based on our condensed financial statements. Our financial statements are prepared in accordance with generally accepted accounting principles in the United States of America. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, and expenses and the disclosure of contingent assets and liabilities in our financial statements. On an ongoing basis, we evaluate our estimates and assumptions, including those related to net product sales, accrued expenses and stock-based compensation. We base our estimates on our historical experience, known trends and events, and various other factors that we believe to be 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. Actual results may differ from these estimates under different assumptions or conditions.

We believe the estimates, assumptions and judgments involved in the accounting policies described in the section titled "Management's Discussion and Analysis of Financial Condition and Results of Operations" in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC on February 11, 2021, have the greatest potential impact on our financial statements, so we consider them to be our critical accounting policies and estimates.



                                      -20-

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Clinical Trial Expense Accruals

We estimate expenses resulting from our obligations under contracts with vendors, CROs and consultants and under clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts vary and may result in payment flows that do not match the periods over which materials or services are provided.

We record clinical trial expenses in the period in which services are performed and efforts are expended. We accrue for these expenses according to the progress of the trial as measured by patient progression and the timing of various aspects of the trial. We estimate accruals through financial models taking into account discussion with applicable personnel and outside service providers as to the progress of trials. During the course of a clinical trial, we may adjust our clinical accruals if actual results differ from our estimates. We estimate accrued expenses as of each balance sheet date based on the facts and circumstances known at that time. Our clinical trial accruals are dependent upon accurate reporting by CROs and other third-party vendors. Although we do not expect our estimates to differ materially 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 for any particular period. For the three months ended March 31, 2021 and 2020, there were no material adjustments to our prior period estimates of accrued expenses for clinical trials.

Stock-based Compensation

We recognize non-cash expense for the fair value of all stock options and other share-based awards. We use the Black-Scholes-Merton option valuation model to calculate the fair value of stock options, using the single-option award approach and straight-line attribution method. For options granted to employees and directors, we recognize the resulting fair value as expense on a straight-line basis over the vesting period of each respective stock option, generally four years.

Results of Operations

Comparison of the Three Months Ended March 31, 2021 and 2020

The following table sets forth the significant components of our results of operations for the periods presented (in thousands):





                                        Three Months Ended March 31,
                                          2021                2020           Change
Research and development              $       7,660       $       7,672     $    (12 )
Selling, general and administrative           4,043               3,836          207




Research and development expenses. Research and development expenses were consistent year-over-year due to a number of activities including: (i) a decrease of $1.3 million in OTIVIDEX clinical trial and development costs primarily due to lower activity during 2021 as a result of the completion of the Phase 3 clinical trial; (ii) a decrease of $0.5 million in development costs for our OTO-413 hearing loss program due to the completion of the initial dose cohorts of the clinical trial in 2020; offset by (iii) a $0.8 million net increase in OTO-313 clinical trial and development costs; (iv) an increase of $0.4 million in personnel costs; and (v) a $0.6 million increase in facilities and other operating expenses mainly due to the impairment of OTIVIDEX manufacturing equipment.

Selling, general and administrative expenses. The increase of $0.2 million in selling, general and administrative expenses was primarily related to an increase in other operating expenses.

Liquidity and Capital Resources

We have incurred significant losses and negative cash flows from operations since our inception. As of March 31, 2021, we had an accumulated deficit of $516.8 million and we expect to continue to incur significant losses for the foreseeable future. We have principally financed our operations through sales and issuances of our equity securities, debt financing as well as private placements of redeemable convertible preferred stock and convertible notes.

As of March 31, 2021, we had cash, cash equivalents and short-term investments of $73.8 million and an outstanding debt balance of $15.2 million. We expect our research and development and selling, general and administrative expenses to continue to be substantial for the foreseeable future and, as a result, we will need additional capital to fund our operations, which we may obtain through one or more public or private equity or debt financings, or other sources such as potential collaboration arrangements.



                                      -21-

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The following table sets forth a summary of the primary sources and uses of cash for the three months ended March 31, 2021 and 2020 (in thousands):





                                               2021          2020
Net cash (used in) provided by:
Operating activities                         $ (12,367 )   $ (12,141 )
Investing activities                            32,615        17,986
Financing activities                                 1             -

Net increase in cash, cash equivalents and


  restricted cash                            $  20,249     $   5,845

Operating activities. The primary uses of cash were to fund increased levels of development activities for our product candidates. We expect to continue the use of cash for development of our product candidates for the foreseeable future.

Net cash used in operating activities was $12.4 million during the three months ended March 31, 2021 compared to $12.1 million, for the prior year period. The $0.3 million increase in the utilization of cash was primarily due to an increase in operating losses compared to the prior year period.

Investing activities. The primary source of cash from investing activities was from maturities of short-term investments and the primary use of cash from investing activities was for purchases of short-term investments and capital expenditures.

Net cash provided by investing activities was $32.6 million during the three months ended March 31, 2021 compared to net cash provided by investing activities of $18.0 million during the prior year period. The increase in net cash provided by investing activities was primarily due to net maturities of short-term investments.

Financing activities. The primary sources of net cash provided by financing activities were net proceeds from the sale of our equity securities.

April 2021 Financing

In April 2021, we sold in a public offering 8,298,890 shares of our common stock, which includes the underwriters' full exercise of their option to purchase additional shares, and we sold pre-funded warrants to purchase 7,111,110 shares of our common stock, for approximately $32.1 million in total net proceeds after deducting underwriting discounts and commissions and estimated offering expenses.

At the Market Offering Program

In August 2019, we entered into a sales agreement (Sales Agreement) with Cowen and Company, LLC (Cowen) to sell shares of our common stock having aggregate sales proceeds of up to $40.0 million, from time to time, through an "at the market" equity offering program under which Cowen will act as sales agent or principal. Under the Sales Agreement, we set the parameters for the sale of shares, including the number or dollar value of shares to be issued, the time period during which sales are requested to be made, limitation on the number of shares that may be sold in any one trading day and any minimum price below which sales may not be made. The Sales Agreement provides that Cowen will be entitled to compensation for its services that will equal 3.0% of the gross sales price per share of all shares sold through Cowen under the Sales Agreement. The Sales Agreement shall automatically terminate upon the issuance and sale of placement shares equaling sales proceeds of $40.0 million and may be terminated earlier by either us or Cowen upon five days' notice. We have no obligation to sell any shares under the Sales Agreement and may at any time suspend solicitation and offers under the Sales Agreement. Through March 31, 2021, we have not sold any shares under the Sales Agreement.

Term Loan

Oxford Loan

On December 31, 2018 (the Closing Date), we entered into a Loan and Security Agreement with Oxford Finance LLC (the Loan Agreement). The Loan Agreement provides for a $15.0 million secured term loan credit facility (the Term Loan). The proceeds of the Term Loan may be used for working capital and general corporate purposes. We have the right to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee of 1.00%. Amounts prepaid or repaid under the Term Loan may not be reborrowed. The Term Loan was fully funded on the Closing Date and matures on December 1, 2023 (the Maturity Date). We paid a facility fee of 0.75% and customary closing fees on the Closing Date.



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The Term Loan bears interest at a floating rate equal to the greater of 5.25% and the prime rate as reported in the Wall Street Journal from time to time, plus 3.75% (9.0% as of March 31, 2021, the minimum interest rate). Interest on the Term Loan is payable monthly in arrears. The Company is permitted to make interest-only payments on the Term Loan for the 36 months following the Closing Date, followed by consecutive equal monthly payments of principal and interest in arrears through the Maturity Date. The outstanding principal amount of the Term Loan, together with accrued and unpaid interest, is due on December 1, 2023. The net outstanding Term Loan balance was $15.2 million as of March 31, 2021.

Upon repayment or acceleration of the Term Loan, a final payment fee equal to 4.00% of the aggregate original principal amount of the Term Loan is payable (the Final Payment). The Final Payment of $0.6 million, as well as the initial facility fee and all other direct fees and costs associated with the Loan Agreement, was recognized as a debt discount. The debt discount will be amortized to interest expense over the term of the Loan Agreement using the effective interest method.

Our obligations under the Loan Agreement are secured by substantially all of our assets, excluding intellectual property and subject to certain other exceptions and limitations.

The Loan Agreement contains customary affirmative covenants, including covenants regarding compliance with applicable laws and regulations, reporting requirements, payment of taxes and other obligations, and maintenance of insurance. Further, subject to certain exceptions, the Loan Agreement contains customary negative covenants limiting our ability to, among other things, sell assets, allow a change of control to occur (if the Term Loan is not repaid), make acquisitions, incur debt, grant liens, make investments, pay dividends or repurchase stock. Upon the occurrence and during the continuance of an event of default, the lenders may declare all outstanding principal and accrued and unpaid interest under the Loan Agreement immediately due and payable, increase the applicable rate of interest by 5.00%, and exercise the other rights and remedies provided for under the Loan Agreement and related loan documents. The events of default under the Loan Agreement include payment defaults, breaches of covenants or representations and warranties, material adverse changes, certain bankruptcy events, cross defaults with certain other indebtedness, and judgment defaults.

Funding Requirements

We expect to continue to incur significant losses for the foreseeable future as we: (i) develop and seek regulatory approvals for our product candidates OTO-313, OTO-413 and OTO-825; and (ii) work to develop additional product candidates through research and development programs. We are subject to all the risks incident in the development of new therapeutic products, and we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business.

We believe that our existing cash, cash equivalents and short-term investments will be sufficient to fund our operations for a period of at least twelve months from the date of this report. When additional financing is required, we anticipate that we will seek funding through public or private equity or debt financings or other sources, such as potential collaboration arrangements. Additional capital may not be available in sufficient amounts or on reasonable terms, if at all, and our ability to raise additional capital 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 resulting from the COVID-19 pandemic. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we may have to significantly delay, scale back or discontinue the development or commercialization of one or more of our product candidates. If we raise additional funds through the issuance of additional debt or equity securities, it could result in dilution to our existing stockholders, 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 and potentially impair our competitiveness, such as limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. Any collaboration agreements we enter into may provide capital in the near-term but limit our potential cash flow and revenue in the future. Any of the foregoing could significantly harm our business, financial condition and prospects.



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Our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement and involves risks and uncertainties, and actual results could vary as a result of a number of factors. We have based this estimate on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we currently expect. The amount and timing of future funding requirements, both near- and long-term, will depend on many factors, including:



    •   the design, initiation, progress, size, timing, costs and results of
        nonclinical studies and clinical trials for our product candidates,
        including OTO-313, OTO-413, and OTO-825;


    •   the outcome, timing and cost of regulatory approvals by the FDA and
        comparable foreign regulatory authorities, including the potential for the
        FDA or comparable foreign regulatory authorities to require that we
        perform more studies than, or evaluate clinical endpoints other than,
        those that we currently expect;


  • the revenue generated by OTIPRIO and our product candidates, if approved;


  • the costs related to manufacturing commercial supplies of OTIPRIO;


    •   the timing and costs associated with manufacturing our product candidates
        for clinical trials, nonclinical studies and for commercial sale;


    •   the cost of building and maintaining sales, marketing and distribution
        capabilities for any products for which we may receive regulatory approval
        and commercialize, including related facilities expansion costs;


  • the number and characteristics of product candidates that we pursue;


    •   the potential acquisition and in-licensing of other technologies, products
        or assets;


    •   the extent to which we are required to pay milestone or other payments
        under our in-license agreements and the timing of such payments;


    •   the cost of obtaining, maintaining, defending and enforcing any patent
        claims and other intellectual property rights, including litigation costs
        and the outcome of such litigation;


  • the cost associated with legal and regulatory compliance;


    •   our need to expand our development activities, including our need and
        ability to hire and adequately compensate additional employees;


  • the potential impacts of the COVID-19 pandemic;


  • the costs associated with being a public company;


  • the effect of competing technological and market developments; and


  • the cost of litigation, including potential patent litigation.

If we cannot expand our operations or otherwise capitalize on our business opportunities because we lack sufficient capital, our business, financial condition and results of operations could be materially adversely affected.

Off-Balance Sheet Arrangements

During the periods presented we did not have, nor do we currently have, any off-balance sheet arrangements as defined under the applicable rules of the SEC.



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