The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and pursuant to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the Company’s opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of the results of operations and cash flows for the periods presented have been included.

Operating results for the six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020 or for any future period. The balance sheet as of December 31, 2019 has been derived from audited consolidated financial statements at that date but does not include all of the information required by U.S. GAAP for complete financial statements. Certain reclassifications have been made to prior period amounts to conform to the current year presentation. “Accrued interest receivable,” which was previously reported as “Prepaid expenses and other current assets”, and “Accrued research and development expense”, which was previously reported as “Other accrued liabilities” on the consolidated balance sheets, are now reported as separate line items.

The accompanying condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes thereto for the year ended December 31, 2019 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 5, 2020.

The Company is an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, and will remain an emerging growth company until December 31, 2020. Under the JOBS Act, the Company elected the extended transition period for complying with new or revised accounting standards. At June 30, 2020 the Company determined that it will become a large accelerated filer at December 31, 2020 and in the process will no longer qualify as an emerging growth company. The Company will adopt any accounting pronouncements deferred under the extended transition period election on or before December 31, 2020.

The Company established a wholly-owned subsidiary in Australia in 2017 and a wholly-owned subsidiary in Ireland in 2019. The condensed consolidated financial statements include the Company’s accounts and those of its wholly-owned subsidiaries. All intercompany accounts, transactions and balances have been eliminated.

The preparation of the Company’s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as related disclosures of contingent assets and liabilities. Estimates were used to determine the value of stock-based awards and other issuances, accruals for research and development costs, useful lives of long-lived assets, and uncertain tax positions. Actual results could differ materially from the Company’s estimates.

Cash equivalents include marketable securities having an original maturity of three months or less at the time of purchase. Short-term investments have maturities of greater than three months and up to twelve months at the time of purchase. Collectively, cash equivalents, short-term and long-term investments are considered available-for-sale and are recorded at fair value. Unrealized gains and losses are recorded in accumulated other comprehensive loss. Realized gains and losses are included in interest and other income, net in the condensed consolidated statements of operations and comprehensive income or loss. The basis on which the cost of a security that is sold or an amount that is reclassified out of accumulated other comprehensive income or loss into earnings is determined using the specific identification method.

Reconciliation of Cash, Cash Equivalents, and Restricted Cash as Reported in Condensed Consolidated Statements of Cash Flows

Restricted cash at June 30, 2020 and December 31, 2019 represents cash balances held as security in connection with the Company’s facility lease agreements. The following table provides a reconciliation of cash, cash equivalents, and restricted cash within the condensed consolidated balance sheets to the total shown in the condensed consolidated statements of cash flows (in thousands):

	June 30, 2020		December 31, 2019
Cash and cash equivalents	$	285,185	$	57,937
Restricted cash		203		203
Cash, cash equivalents and restricted cash	$	285,388	$	58,140

Cash equivalents, short-term and long-term investments are financial instruments that potentially subject the Company to concentrations of credit risk. The Company invests in money market funds, treasury bills and notes, government bonds, commercial paper and corporate notes. The Company limits its credit risk associated with cash equivalents, short-term and long-term investments by placing them with banks and institutions it believes are credit worthy and in highly rated investments.

Research and development costs are expensed as incurred. Research and development expenses consist primarily of personnel costs for the Company’s research and development employees, costs incurred to third-party service providers for the conduct of research, preclinical and clinical studies, laboratory supplies and equipment maintenance costs, product license fees, consulting and other related expenses.

The Company estimates research, preclinical and clinical study expenses based on services performed, pursuant to contracts with third-party research and development organizations that conduct and manage research, preclinical and clinical activities on its behalf. The Company estimates these expenses based on discussions with internal management personnel and external service providers as to the progress or stage of completion of services and the contracted fees to be paid for such services. If the actual timing of the performance of services or the level of effort varies from the original estimates, the Company will adjust the accrual accordingly. Payments associated with licensing agreements to acquire licenses to develop, use, manufacture and commercialize products that have not reached technological feasibility and do not have alternative future use are expensed as incurred. Payments made to third parties under these arrangements in advance of the performance of the related services by the third parties are recorded as prepaid expenses until the services are rendered.

Stock-based awards granted include stock options and restricted stock awards with time-based vesting. ASC 718 requires the recognition of compensation expense, using a fair value-based method, for costs related to all stock-based payments. The Company’s determination of the fair value of stock options with time-based vesting on the date of grant utilizes the Black-Scholes option-pricing model, and is impacted by the Company’s common stock price as well as other variables including, but not limited to, expected term that options will remain outstanding, expected common stock price volatility over the term of the option awards, risk-free interest rates and expected dividends. Compensation expense associated with restricted stock awards is based on the fair value of common stock on the date of grant.

On March 18, 2020, the Families First Coronavirus Response act (FFCR Act), and on March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) were each enacted in response to the COVID-19 pandemic. The FFCR Act and the CARES Act contain numerous tax-related provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. On June 29, 2020 California State Assembly Bill 85 (the Trailer Bill) was enacted which suspends the use of California net operating loss (NOL) deductions and certain tax credits, including research and development tax credits, for the 2020, 2021, and 2022 tax years.

The FFCR Act, CARES Act and Trailer Bill did not have a material impact on the Company’s condensed consolidated financial statements as of June 30, 2020; however, the Company continues to examine the impacts the FFCR Act, CARES Act and Trailer Bill may have on its business, results of operations, financial condition and liquidity.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 reduces costs and complexity of applying accounting standards while maintaining the usefulness of the information provided to users of financial statements. While not required to be adopted until 2021 for most calendar year public business entities, early adoption is permitted for any financial statements not yet issued. The Company early adopted this ASU as of January 1, 2020, with an immaterial impact on its financial statements.

In February 2016, the FASB issued ASU No. 2016-02 (Topic 842), Leases (ASU 2016-02). ASU 2016-02 requires an entity to recognize assets and liabilities arising from a lease for both financing and operating leases. The ASU will also require new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases and ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, which offers a practical expedient for transitioning at the adoption date. The Company is required to adopt these ASUs for its year ended December 31, 2020, with an effective date of January 1, 2020. The Company expects to adopt the standard using the modified retrospective approach which requires a cumulative-effect adjustment to retained earnings for adjustments prior to January 1, 2020. The Company also expects to adopt certain practical expedients provided by ASU 2018-11. The Company is in the process of implementing its plan, which includes the identification of its lease population and implementing changes to existing process that will be required to meet the requirements of the new standard. The adoption of Topic 842 is expected to impact the Company’s condensed consolidated financial statements as the Company has certain operating lease arrangements for which it is the lessee. The Company is currently evaluating the impact the adoption of Topic 842 will have on its financial position and results of operations but anticipates the recognition of additional material assets and corresponding material liabilities on its condensed consolidated balance sheet related to leases. The adoption of this accounting standard update is also expected to impact the Company’s condensed consolidated financial statement disclosures.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which modifies the measurement and recognition of credit losses for most financial assets and certain other instruments. The ASU updates the guidance for measuring and recording of current expected credit losses on financial assets measured at amortized cost by replacing the “incurred loss” model with an “expected loss” model. Accordingly, these financial assets will be presented at the net amount expected to be collected. The ASU also requires that credit losses related to available-for-sale debt securities be recorded as an allowance through net income rather than reducing the carrying amount under the current, other-than-temporary-impairment model. The Company is required to adopt ASU 2016-13 for its year ended December 31, 2020, with an effective date of January 1, 2020. The Company expects to adopt the standard using the modified retrospective approach which requires a cumulative-effect adjustment to accumulated deficit for adjustments prior to January 1, 2020. The adoption of this standard is not expected to have a material impact on the Company’s condensed consolidated financial statements.

In August 2018, the FASB issued ASU No.2018-13 (Topic 820), Fair Value Measurement. ASU 2018-13 modifies the disclosure requirements on fair value measurement in Topic 820. The Company is required to adopt ASU 2018-13 by December 31, 2020, with an effective date of January 1, 2020. The Company expects to adopt the standard on December 31, 2020. The adoption of this standard is not expected to have a material impact on the Company’s condensed consolidated financial statements.

In August 2018, the FASB issued ASU No.2018-15 (Subtopic 350-40), Intangibles – Goodwill and Other – Internal-Use Software. ASU 2018-15 requires an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to internal-use software. The Company is required to adopt ASU 2018-15 by December 31, 2020, with an effective date of January 1, 2020. The Company expects to adopt the standard on December 31, 2020. The adoption of this standard is not expected to have a material impact on the Company’s condensed consolidated financial statements.

In November 2018, the FASB issued ASU No. 2018-18 (Topic 808), Collaborative Arrangements. ASU 2018-18 clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606 when the collaborative arrangement participant is a customer in the context of a unit of account and precludes recognizing as revenue consideration received from a collaborative arrangement participant if the participant is not a customer. The Company is required to adopt ASU 2018-18 by December 31, 2020, with an effective date of January 1, 2020. The adoption of this standard is not expected to have a material impact on the Company’s condensed consolidated financial statements.