You should read the following discussion and analysis of our financial condition and results of operations together with our financial statements and the related notes included elsewhere in this report. This discussion and analysis and other parts of this report contain forward-looking statements based upon current beliefs, plans and expectations related to future events and our future financial performance that involve risks, uncertainties and assumptions, such as statements regarding our intentions, plans, objectives, expectations, forecasts 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 the section titled "Risk Factors" and elsewhere in this report.

Overview

We are a development-stage biopharmaceutical company developing a novel therapeutic product for the acute treatment of migraine. Our product candidate, STS101, is a drug-device combination of a proprietary dry-powder formulation of dihydroergotamine mesylate, or DHE, which is designed to be quickly and easily self-administered with a proprietary pre-filled, single-use, nasal delivery device. DHE products have long been recommended as a first-line therapeutic option for the acute treatment of migraine and have significant advantages over other therapeutics for many patients. However, broad use has been limited by invasive and burdensome administration and/or sub-optimal clinical performance of available injectable and liquid nasal spray products. STS101 is specifically designed to deliver the clinical advantages of DHE while overcoming these shortcomings. If we can timely secure a strategic transaction partner to continue development of STS101, and if such potential transaction partner can obtain regulatory approval for and successfully commercialize STS101, we believe STS101 has the potential to be an important and differentiated option for the acute treatment of migraine that can address the unmet needs of many people living with migraines.

In January 2023, we completed our STS101 clinical development program in which a total of more than 1,600 subjects have treated more than 10,000 migraine attacks with STS101. The STS101 clinical development program included multiple Phase 1 clinical trials, two Phase 3 placebo-controlled efficacy trials (the EMERGE and SUMMIT trials) and a long-term, open-label safety trial (the ASCEND trial). We believe the results of our STS101 clinical development program are supportive of the efficacy and safety of STS101. We have also worked to establish, in collaboration with our contract manufacturing partners, the ability to manufacture commercial quantities of STS101 utilizing proprietary processes, custom mold tooling that we own, and custom, automated filling, assembly and packaging equipment that we own.

In May 2022, we completed meetings with the Food and Drug Administration (FDA) related to our clinical data and chemistry, manufacturing and controls (CMC) for our planned new drug application (NDA) for STS101. The purpose of these meetings was to discuss and confirm required nonclinical, clinical and CMC content of the STS101 NDA. In November 2022, we announced topline results from our STS101 SUMMIT Phase 3 efficacy trial showing numerical differences in favor of STS101 versus placebo on the pre-specified co-primary endpoints of freedom from pain and freedom from most bothersome symptom (from among photophobia, phonophobia and nausea) at the two-hour post-administration timepoint. However, these differences did not achieve statistical significance (p-value <0.05). In addition, we announced that we do not plan to invest in commercializing STS101 and that we will actively explore alternatives to maximize value for shareholders, while minimizing cash expenditures.

In January 2023, we completed our STS101 ASCEND Phase 3 long-term, open-label safety trial. During the course of the trial, more than 446 subjects treated more than 9,000 attacks with more than 10,500 doses of STS101, with some subjects treating their migraines with STS101 for up to 18 months. STS101 demonstrated a favorable safety and tolerability profile in the ASCEND trial, consistent with clinical experience to date.

In March 2023, we filed an NDA for STS101 with the FDA, and if the FDA accepts the NDA for substantive review, we anticipate the FDA action date for the STS101 NDA will be in January 2024. As has been our longstanding plan, we are seeking FDA approval of STS101 under the 505(b)(2) regulatory pathway that allows us to reference some of the information required for STS101 approval from studies not conducted by Satsuma. Based



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on written feedback provided to us by the FDA, we believe the results of our completed Phase 1 pharmacokinetic (PK) clinical trials and our ASCEND Phase 3 long-term safety trial are sufficient, in combination with information referenced from studies not conducted by Satsuma, to support FDA approval of STS101.

The FDA has communicated to us in multiple meetings that a pivotal efficacy trial, such as the STS101 SUMMIT Phase 3 trial, which we completed and announced results from in November 2022, is not required for approval of STS101, as the efficacy of STS101 may be established via a "pharmacokinetic bridge" to the 505(b)(2) DHE reference products, D.H.E. 45 (DHE injectable solution) and Migranal (DHE liquid nasal spray). The FDA has also communicated to us that the results of the SUMMIT trial may be considered for inclusion in the STS101 prescribing information if the study is adequate and well-controlled and has results supportive of efficacy. We believe that the SUMMIT trial was adequate and well-controlled and that the results from the trial provide a totality of evidence that is supportive of the efficacy of STS101 in the acute treatment of migraine despite STS101 not having demonstrated statistical superiority over placebo on the co-primary endpoints at the two-hour post-administration timepoint. We further believe that STS101 can address unmet needs of many people with migraine, and that the results of the SUMMIT trial, if included in the prescribing information for STS101, if approved by FDA, would provide important treatment information to physicians and patients.

The clinical portion of our STS101 NDA is supported primarily by clinical trial results, generated with investigational product that incorporates our second-generation, nasal delivery device, from (i) the Phase 1 comparative PK study of STS101 that we completed in June 2021; and (ii) the STS101 Phase 3 ASCEND long-term, open-label safety trial that we completed in January 2023.

We believe our second-generation nasal device, which we introduced into the then-ongoing ASCEND trial in January 2021, in conjunction with improved instructions for STS101 use and training of subjects in our clinical trials, effectively addressed the under-delivery issue first identified with our first-generation delivery device shortly following our announcement of results from the EMERGE Phase 3 efficacy trial in September 2020. Based on our discussions with the FDA, we believe the data in our NDA support approval of STS101 incorporating this second-generation delivery device.

In November 2022 we announced that we do not plan to invest in commercializing STS101 and that we would actively explore alternatives to maximize value for shareholders, while minimizing cash expenditures. Based on the following factors, we revised our business plan and strategy in order to maximize value for our stockholders:

results of the Phase 3 SUMMIT trial, in which STS101 did not achieve statistical superiority to placebo on the co-primary outcome measures;

our belief, based on review of the SUMMIT trial results in their entirety and our primary market research conducted subsequent to announcement of the SUMMIT trial results, that STS101, if approved and successfully commercialized, has the potential to be an important and differentiated option for the acute treatment of migraine that can address the unmet needs of many people living with migraines;

the significant decrease in our stock price that occurred following our announcement of the SUMMIT trial results;

current and anticipated future capital market conditions; and

our projected need for substantial additional capital were we to continue to develop STS101 through potential regulatory approval and pursue independent commercialization of STS101.

Accordingly, key elements of our revised business plan and strategy are as follows:

seek to conclude a strategic transaction with an industrial partner or financial sponsor on favorable terms under which a counterparty will financially support and assume responsibility for completing development of and commercializing STS101 (Potential Strategic Transaction);

minimize cash expenditures and continue to invest in and advance the STS101 development program only to the extent necessary to maintain its viability until such time as we may be able to conclude a Potential Strategic Transaction. To this end, in March 2023, we filed an NDA with the FDA for



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STS101, and if the FDA accepts the NDA for substantive review, we anticipate the FDA action date for the STS101 NDA will be in January 2024; and

seek no further funding, as such funding, if available at all, would likely not be available on terms that would be acceptable or favorable to us.

There can be no assurance that we will be able to successfully execute our revised business plan and strategy, and in the event we are unable to timely conclude a Potential Strategic Transaction on acceptable terms, we may be forced to discontinue development of STS101, withdraw the STS101 NDA and pursue other strategic alternatives, such as dissolution and wind-down.

Our net losses were $70.1 million and $51.2 million for the years ended December 31, 2022 and 2021, respectively. As of December 31, 2022, we had an accumulated deficit of $211.8 million.

Since our inception in June 2016, we have invested substantially all of our efforts and financial resources in the development of STS101 for the acute treatment of migraine. We have incurred significant operating losses to date and we expect our operating expenses will decrease significantly as we complete the clinical development of STS101, refine the manufacturing processes and seek regulatory approval of STS101 with the filing of an NDA, the;. In addition, we expect to continue to incur costs associated with operating as a public company and to maintain, protect and enforce our intellectual property portfolio.

In November 2022, we entered into an At-the-Market Sales Agreement (the "Virtu Sales Agreement"), with Virtu Americas LLC ("Virtu"), to sell shares of our common stock, from time to time, through an ATM equity offering program under which Virtu will act as its sales agent and pursuant to which we may sell common stock for aggregate gross sales proceeds of up to $100.0 million. The issuance and sale of shares of common stock by us pursuant to the Virtu Sales Agreement is deemed an ATM offering under the Securities Act of 1933, as amended. Virtu is entitled to compensation for its services equal to up to 3.0% of the gross proceeds of any shares of common stock sold through Virtu under the Virtu Sales Agreement. As of December 31, 2022, no shares of common stock have been sold pursuant to Virtu Sales Agreement.

We do not have any products approved for sale and have not generated any product revenue since our inception. Our ability to generate revenues will depend on the successful development of STS101 and eventual commercialization of STS101 by a third party. We do not intend to seek further funding, as we believe such funding, if available at all, would likely not be available on terms that would be acceptable or favorable to us.

As of December 31, 2022, we had cash, cash equivalents and marketable securities of $52.5 million. We believe our cash, cash equivalents and marketable securities would be insufficient to enable us to fund current operations for a period of one year or more from the issuance date of this Annual Report on Form 10-K were we to continue to pursue development and commercialization of STS101. We believe that this raises substantial doubt about our ability to continue as a going concern. See "Organization and Summary of Significant Accounting Policies-Liquidity" in Note 1 to our financial statements included elsewhere in this Annual Report on Form 10-K for additional information on our assessment. Similarly, the report of our independent registered public accounting firm on our financial statements as of and for the year ended December 31, 2022 includes an explanatory paragraph indicating that there is substantial doubt about our ability to continue as a going concern. If we are unable to timely conclude a strategic transaction with an industrial partner or financial sponsor on favorable terms under which a counterparty will financially support and assume responsibility for completing development of and commercializing STS101 (Potential Strategic Transaction) on acceptable terms, we may be forced to discontinue development of STS101, withdraw the STS101 NDA and pursue other strategic alternatives, such as dissolution and wind-down.

Workforce Reduction

On March 27, 2023, our board of directors approved a plan to reduce our workforce by 9 employees, or approximately 36% of the our headcount as of such date (the "Workforce Reduction"), in order to preserve cash and maximize the value of STS101 for a potential strategic transaction partner. In connection with the Workforce Reduction, the position of Detlef Albrecht, M.D., our Chief Medical Officer, with the Company was eliminated. We



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estimate that we will incur aggregate charges in connection with the Workforce Reduction of approximately $1.3 million, which relate primarily to severance payments and related continuation of benefits costs, all of which are anticipated to result in future cash expenditures, along with the payment of approximately $0.2 million in accrued benefits including paid-time-off. We expect the majority of these costs to be incurred during the quarter ending March 31, 2023.

The foregoing estimates of the charges and expenditures that we expect to incur in connection with the Workforce Reduction, and the timing thereof, are subject to several assumptions and the actual amounts incurred may differ materially from these estimates. In addition, we may incur other charges or cash expenditures not currently contemplated due to unanticipated events that may occur, including in connection with the implementation of the Workforce Reduction.

Components of Operating Results

Operating Expenses

Research and Development Expenses

All of our research and development expenses consist of expenses incurred in connection with the development of STS101 for the acute treatment of migraine. These expenses include:

payroll and personnel-related expenses, including salaries, annual cash bonuses, employee benefit costs and stock-based compensation expenses for our research and product development employees;

fees paid to third parties to conduct preclinical and clinical studies and other research and development activities, including contract research organizations, or CROs, contract manufacturing organizations, or CMOs, consultants, and other service providers; and

costs for licenses and allocated overhead, including rent, equipment, depreciation, information technology costs and utilities.

We expense both internal and external research and development expenses as they are incurred. We have entered into various agreements with third party vendors and CMOs. Our research and development accruals are estimated based on the level of services performed, progress of the studies, including the phase or completion of events or tasks, and contracted costs. The estimated costs of research and development provided, but not yet invoiced, are included in accrued and other current liabilities on the balance sheet. If the actual timing of the performance of services or the level of effort varies from the original estimates, we adjust the accrual accordingly. Payments made to CROs and CMOs under these arrangements in advance of the performance of the related services are recorded as prepaid expenses and other current assets until the services are rendered. Nonrefundable payments made prior to the receipt of goods or services that will be used or rendered for future research and development activities are deferred and capitalized as prepaid expenses and other current assets on our balance sheet. The capitalized amounts are recognized as expense as the goods are delivered or the related services are performed.

As we continue the development of STS101, we, an industrial partner or financial sponsor will incur significantly lower research and development expenses, as we, an industrial partner or financial sponsor refine the STS101 manufacturing processes and seek regulatory approval of STS101 and as a result of the workforce reduction announced in March 2023. Predicting the timing or the cost to complete validation of commercial manufacturing and supply processes is difficult and delays may occur because of many factors, including factors outside of our control. For example, if the FDA or other regulatory authorities were to require us, an industrial partner or financial sponsor to conduct clinical trials beyond those completed anticipate or if we experience delays in manufacturing with any of our CMOs, we could be required to expend significant additional financial resources and time on the completion of clinical development. Furthermore, we are unable to predict with certainty when or if STS101 will receive regulatory approval.

General and Administrative Expenses

General and administrative expenses consist principally of payroll and personnel expenses, including salaries, annual cash bonuses, benefits, and stock-based compensation expenses, professional fees for legal, consulting,



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accounting and tax services, directors and officers insurance, allocated overhead, including rent, equipment, depreciation, information technology costs, and utilities, and other general operating expenses not otherwise classified as research and development expenses including expenses associated with pre-commercialization activities.

We anticipate that general and administrative expenses will decrease as the result of the workforce reduction announced in March 2023 and termination of pre-commercialization activities due to our decision not to pursue independent commercialization STS101. These costs consist of personnel costs, including salaries, benefits and stock-based compensation expenses, consulting, legal and accounting services associated with maintaining compliance with stock exchange listing and Securities and Exchange Commission, or SEC, requirements, investor relations costs and director and officer insurance premiums associated with being a public company.

Interest Income

Interest income consists primarily of interest earned on our cash, cash equivalents and marketable securities.

Interest Expense

Interest expense consists primarily of interest related to our long-term debt and accretion of debt discount, debt issuance costs and final payment.

Results of Operations

Comparison of the Years Ended December 31, 2022 and 2021

The following table summarizes our results of operations for the periods indicated (in thousands, except percentages):



                               Year Ended December 31,
                                 2022             2021         Change       % Change
Operating expenses:
Research and development     $     44,092       $  37,635     $   6,457            17 %
General and administrative         15,126          13,531         1,595            12 %
Impairment loss                    11,729               -        11,729           100 %
Loss from operations              (70,947 )       (51,166 )     (19,781 )          39 %
Interest income                       905             157           748           476 %
Interest expense                      (13 )          (163 )         150           (92 %)
Net loss                     $    (70,055 )     $ (51,172 )   $ (18,883 )          37 %



Research and Development Expenses

Research and development expenses increased from the year ended December 31, 2021 to the year ended December 31, 2022 primarily due to increase of $6.8 million in clinical trial costs, which was the net of an increase of $7.4 million for the SUMMIT efficacy trial and $0.7 million for NDA preparation work, offset by decrease of $0.3 million for the ASCEND safety trial, and a decrease of $0.8 million for the STS101 Phase 1 trials and other clinical analysis, and a decrease of $0.2 million in recruitment of clinical personnel, as well as increases of $0.6 million in payroll and personnel expenses, including salaries, benefits, bonuses and stock-based compensation expenses, and an increase of $0.3 million in allocated facilities related expenses, partly offset by a decrease of $1.3 million in manufacturing activities.

General and Administrative Expenses

General and administrative expenses increased from the year ended December 31, 2021 to the year ended December 31, 2022 primarily due to an increase of $2.2 million due to increased pre-commercialization activity, partly offset by a decrease of $0.1 million of payroll and personnel expenses, including salaries, benefits, bonuses



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and stock-based compensation expenses, a decrease of $0.3 million in professional services for consulting, accounting, tax and other administrative fees, and a decrease of $0.2 million in allocated facilities related expenses.

Impairment Loss

During the year ended December 31, 2022, we recorded an impairment loss of $11.7 million consisting of $6.7 million impairment loss to write down the property and equipment to its fair market value, $2.2 million impairment loss to write off prepaid expenses and other current assets related to purchases of property and equipment, and $2.8 million impairment loss to accrue non-cancelable future payments related to purchases of the property and equipment. The impairment loss was a result of our reported topline results from the STS101 SUMMIT Phase 3 efficacy trial and our plan not to invest in commercialization of STS101. We did not record any long-lived asset impairment loss for the year ended December 31, 2021.

Interest Income

Interest income increased from the year ended December 31, 2021 to the year ended December 31, 2022 primarily as a result of the higher interest yields in the year ended December 31, 2022, partly offset by a decrease in average balances of our cash, cash equivalents and marketable securities in the year ended December 31, 2022.

Interest Expense

Interest expense decreased from the year ended December 31, 2021 to the year ended December 31, 2022 primarily attributable to the decrease of outstanding debt balance, which was fully repaid in May 2022.

Liquidity and Capital Resources; Plan of Operations

Sources of Liquidity

We have historically financed our operations primarily through the issuance of common stock in our IPO, and private placements of equity securities and borrowings under our long-term debt facility. We have no products approved for sale, and we have not generated any revenue since inception. We expect to incur significant additional operating losses over at least the next several years.

In October 2020, we entered into the SVB Sales Agreement with SVB to sell shares of our common stock, from time to time, through an ATM equity offering program under which SVB acted as our sales agent and pursuant to which we could sell common stock for aggregate gross sales proceeds of up to $50.0 million. In September 2022, we received $9.7 million in net proceeds from the sale of shares of common stock pursuant to the SVB Sales Agreement. On October 26, 2022, we terminated the SVB Sales Agreement. As a result, the ATM equity offering facility under the SVB Sales Agreement is no longer available for use.

In November 2022, we entered into the Virtu Sales Agreement with Virtu to sell shares of our common stock, from time to time, through an ATM equity offering program under which Virtu will act as our sales agent and pursuant to which we may sell common stock for aggregate gross sales proceeds of up to $100.0 million.

In October 2018, we entered into the Loan Agreement with Silicon Valley Bank. The Loan Agreement provided for loan advances of up to $10.0 million. We drew down the first advance of $5.0 million as of the effective date of the Loan Agreement. The remaining $5.0 million under the facility was never drawn down and is no longer available for draw. Interest on the loan advances was payable monthly at a floating per annum rate equal to the greater of 1.5% above the prime rate and 6.5%. Upon the occurrence of an event of default, interest would increase to 5.0% above the rate that is otherwise applicable. Principal on the outstanding loan advance was repayable commencing on December 1, 2019 in 30 monthly payments through maturity. The maturity date of the loan advances was May 1, 2022.

In May 2022, we repaid our entire obligation under the Loan Agreement amounting to $0.4 million, including outstanding loan amount of $0.2 million and final payment of $0.2 million.

On March 10, 2023, the California Department of Financial Protection and Innovation closed Silicon Valley Bank and appointed the Federal Deposit Insurance Corporation ("FDIC") as receiver. On March 12, 2023, the U.S. Department of the Treasury, the Federal Reserve and the FDIC released a joint statement confirming that all depositors of Silicon Valley Bank would have access to all of their money after only one business day of closure, including funds held in uninsured deposit accounts. We received full access to the funds in our deposit and money



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market accounts on March 13, 2023. In light of actions by the federal government to fully protect deposit accounts, we believe that the impact on our liquidity is immaterial.

Future Funding Requirements

We have incurred net losses since our inception. Our net losses were $70.1 million and $51.2 million for the years ended December 31, 2022 and 2021, respectively. We believe our cash, cash equivalents and marketable securities would be insufficient to enable us to fund current operations for a period of one year or more from the issuance date of this Annual Report on Form 10-K were we to continue to pursue development and commercialization of STS101. We believe that this raises substantial doubt about our ability to continue as a going concern. See Note 1 to our financial statements included elsewhere in this Annual Report on Form 10-K for additional information on our assessment.

Based on our current plans and strategies, we anticipate our operating expenses will decrease as we do not plan to invest in commercializing STS101 and plan to pursue a Potential Strategic Transaction. While less than historically incurred, on-going expenses will be required to continue development of STS101 to maintain its viability for a Potential Strategic Transaction partner.

We do not intend to pursue further funding and, instead, are seeking to conclude a Potential Strategic Transaction with an industrial partner or financial sponsor that would fund further development and commercialization of STS101.

If we are unable to timely conclude a Potential Strategic Transaction, we would likely terminate development of STS101, withdraw our NDA and pursue other strategic alternatives, such as dissolution and wind-down. See "Risk Factors" for additional risks associated with substantial capital requirements.

Summary Statement of Cash Flows

The following table sets forth the primary sources and uses of cash and cash equivalents for each of the periods presented below:



                                                         Year Ended December 31,
                                                           2022             2021
                                                              (in thousands)
Net cash (used in) provided by:
Operating activities                                   $    (51,516 )     $ (42,997 )
Investing activities                                         43,371         (50,777 )
Financing activities                                          8,739          73,283

Net increase (decrease) in cash and cash equivalents $ 594 $ (20,491 )

Cash Flows Used in Operating Activities

Net cash used in operating activities was $51.5 million for the year ended December 31, 2022. Cash used in operating activities was primarily due to the use of funds in our operations to develop STS101, which resulted in a net loss of $70.1 million, adjusted for a decrease in accrued and other current liabilities of $2.6 million, which amounts were partially offset by a decrease in prepaid expenses and other assets of $2.7 million, an increase in accounts payable of $0.5 million, impairment loss of $11.7 million, stock-based compensation expense of $5.7 million, and depreciation expense of $0.5 million. The decrease in prepaid expenses and other assets and accrued and other current liabilities and increase in accounts payable were primarily the result of the timing of payments to our vendors.

Net cash used in operating activities was $43.0 million for the year ended December 31, 2021. Cash used in operating activities was primarily due to the use of funds in our operations to develop STS101, which resulted in a net loss of $51.2 million, adjusted for a decrease of accounts payable by $1.2 million and an increase in prepaid expenses and other assets of $0.9 million, which amounts were partially offset by an increase in accrued and other liabilities of $3.3 million, stock-based compensation expense of $5.4 million, net amortization of premiums and



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discounts on marketable securities of $0.7 million, loss on disposal of property and equipment of $0.6 million and depreciation expense of $0.4 million. The decrease in accounts payable and an increase in prepaid expenses and other assets and accrued and other liabilities were primarily the result of the timing of payments to our vendors.

Cash Flows Provided by (Used in) Investing Activities

Net cash provided by investing activities was $43.4 million for the year ended December 31, 2022, which consisted of proceeds from maturities of marketable securities of $91.6 million, which amounts were partially offset by purchases of marketable securities of $47.8 million and purchases of property and equipment of $0.5 million.

Net cash used in investing activities was $50.8 million for the year ended December 31, 2021, which consisted of purchases of marketable securities of $88.6 million and purchases of property and equipment of $2.0 million, which amounts were partially offset by proceeds from maturities of marketable securities of $39.9 million.

Cash Flows Provided by Financing Activities

Net cash provided by financing activities was $8.7 million for the year ended December 31, 2022, which consisted of $9.7 million of net cash proceeds from our At-the-Market offering and proceeds from the issuance of common stock under employee share purchase plan of $0.1 million, partially offset by repayment of debt of $1.1 million.

Net cash provided by financing activities was $73.3 million for the year ended December 31, 2021, which consisted of $75.2 million of net cash proceeds from our Private Placement and proceeds from the issuance of common stock under employee plans of $0.1 million, partially offset by repayment of debt of $2.0 million.

Contractual Obligations and Commitments

We enter into contracts in the normal course of business with third-party contract organizations for clinical trials, manufacturing and testing and providing other services and products for operating purposes. These contracts generally provide for termination following a certain period after notice, and therefore we believe that our non-cancelable obligations under these agreements are not material.

Critical Accounting Policies, Significant Judgments and Use of Estimates

Our financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in Note 1, Organization and Summary of Significant Accounting Policies, to the financial statements, we believe that the following accounting policy is the most critical to the judgement and estimates used in the preparation of our financial statements.

Accrued Research and Development

We monitor the activity under our various agreements with CROs, CMOs and other service providers to the extent possible through communication with each service provider, detailed invoice and task completion review, analysis of actual expenses against budget, pre-approval of any changes in scope, and review of contractual terms. Our research and development accruals are estimated based on the level of services performed, progress of the studies, including the phase or completion of events, and contracted costs. These estimates may or may not match the actual services performed by the service providers. 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



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to the actual status and timing of services performed may vary and could result in us reporting amounts that are too high or too low in any particular period. The estimated costs of research and development provided, but not yet invoiced, are included in accrued liabilities on the balance sheet. If the actual timing of the performance of services or the level of effort varies from our estimates, we will adjust the accrual or amount of prepaid expenses and other current assets accordingly.

JOBS Act Accounting Election

The Jumpstart Our Business Startups Act of 2012, or the JOBS Act, permits an "emerging growth company" such as us to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. We have elected to use this extended transition period under the JOBS Act. As a result, our financial statements may not be comparable to the financial statements of issuers who are required to comply with the effective dates for new or revised accounting standards that are applicable to public companies, which may make comparison of our financials to those of other public companies more difficult.

Recent Accounting Pronouncements See "Organization and Summary of Significant Accounting Policies-Recent Accounting Pronouncements" in Note 1 to our financial statements included elsewhere in this Annual Report on Form 10-K for additional information.



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