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Significant Accounting Policies (Policies)
 6 Months Ended
Jun. 30, 2022
Significant Accounting Policies  
Description of Business

Omeros Corporation (“Omeros,” the “Company” or “we”) is a clinical-stage biopharmaceutical company committed to discovering, developing and commercializing small-molecule and protein therapeutics for large-market as well as orphan indications targeting immunologic diseases, including complement-mediated diseases and cancers related to dysfunction of the immune system, as well as addictive and compulsive disorders. We marketed our first drug product, OMIDRIA® (phenylephrine and ketorolac intraocular solution) 1% / 0.3% for use during cataract surgery or intraocular lens replacement in the United States (the “U.S.”) until we sold OMIDRIA and related business assets on December 23, 2021 (see “Sale of OMIDRIA Assets” below for additional information).

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Our drug candidate narsoplimab is the subject of a biologics license application (“BLA”) pending before the U.S. Food and Drug Administration (“FDA”) for the treatment of hematopoietic stem cell transplant-associated thrombotic microangiopathy (“HSCT-TMA”). On October 18, 2021, we announced the receipt of a Complete Response Letter (“CRL”) from FDA regarding the BLA. In the CRL, FDA expressed difficulty in estimating the treatment effect of narsoplimab in HSCT-TMA and asserted that additional information will be needed to support regulatory approval. In February 2022, we had a Type A post-action meeting with FDA to discuss the CRL. Although we felt that we adequately addressed all of the issues noted in the CRL, the meeting minutes included a number of the review division’s critiques that we believe had already been addressed and/or were inaccurate. As a result, in June 2022, we submitted a Formal Dispute Resolution Request. Formal Dispute Resolution is an official pathway that enables a sponsor to appeal a decision by an FDA review division to a higher authority within FDA, in this case the Office of New Drugs (“OND”). We continue to believe that our BLA, as submitted, merits approval and that the data meet or exceed the threshold for substantial evidence of effectiveness; however, there can be no assurances that the Formal Dispute Resolution process will provide a clear path to resubmission of our BLA, that resubmission will result in approval of our BLA, or that any identified path to BLA resubmission will be satisfactory in terms of the information, time and/or expenditure required. We are currently awaiting a decision from OND on the dispute. Unless the deciding official asks us for more information or notifies us that more time is needed to complete the review, we expect a decision on the dispute to be rendered in August 2022.

We also have multiple late-stage clinical development programs in our pipeline, which are focused on: complement-mediated disorders, including immunoglobulin A (“IgA”) nephropathy, atypical hemolytic uremic syndrome (“aHUS”) and COVID-19.
Basis of Presentation

Basis of Presentation

Our condensed consolidated financial statements include the financial position and results of operations of Omeros and our wholly owned subsidiaries. All inter-company transactions have been eliminated. The accompanying condensed

consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). Certain prior year amounts in the condensed consolidated balance sheets, statements of operations, statements of stockholders’ equity (deficit) and statements of cash flows and the notes to the condensed consolidated financial statements have been reclassified in the condensed consolidated financial statements to conform to the current year presentation.
Risks and Uncertainties

Risks and Uncertainties

As of June 30, 2022, we had cash, cash equivalents and short-term investments of $122.6 million and outstanding accounts receivable of $14.5 million. Our loss for the second quarter ended June 30, 2022 was $30.9 million and included $3.7 million of noncash operating expenses. Our loss for the six months ended June 30, 2022 was $63.9 million and included $7.9 million of noncash operating expenses.

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We plan to continue to fund our operations for the next twelve months with our existing cash and investments, our current accounts receivable, and OMIDRIA royalties. There is also the potential for us to receive a $200.0 million milestone related to achievement of long-term OMIDRIA separate payment. If FDA approval is granted for narsoplimab for HSCT-TMA within the next twelve months, we expect that sales of narsoplimab will also provide funds for our operations. We have a sales agreement to sell shares of our common stock, from time to time, in an “at the market” equity offering facility through which we may offer and sell shares of our common stock equaling an aggregate amount up to $150.0 million. Should it be determined to be strategically advantageous, we could pursue debt financings as well as public and private offerings of our equity securities, similar to those we have previously completed, or other strategic transactions, which may include licensing a portion of our existing technology.

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Management believes the assets on hand along with expected royalties to be received are adequate to finance our operations at least through August 9, 2023. Accordingly, the accompanying condensed consolidated financial statements have been prepared on a going-concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.

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Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant items subject to such estimates include OMIDRIA contract royalty asset valuation, stock-based compensation expense, and accruals for clinical trials and manufacturing of drug product. We base our estimates on historical experience and on various other factors, including the impact of the COVID-19 pandemic, that we believe are reasonable under the circumstances; however, actual results could differ from these estimates.
Discontinued Operations

Discontinued Operations

We review the presentation of planned or completed business dispositions in the condensed consolidated financial statements based on the available information and events that have occurred. The review consists of evaluating whether the business meets the definition of a component for which the operations and cash flows are clearly distinguishable from the other components of the business and, if so, whether it is anticipated that after the disposal the cash flows of the component would be eliminated from continuing operations and whether the disposition represents a strategic shift that has a major effect on operations and financial results.

Planned or completed business dispositions are presented as discontinued operations when all the criteria described above are met. For those divestitures that qualify as discontinued operations, all comparative periods presented are reclassified in the consolidated balance sheets. Additionally, the results of operations of a discontinued operation are reclassified to income from discontinued operations, for all periods presented in the condensed consolidated statements of operations and comprehensive loss. Results of discontinued operations include all revenues and expenses directly derived from such businesses; general corporate overhead is not allocated to discontinued operations. The OMIDRIA

asset sale to Rayner qualifies as a discontinued operation. The Company included information regarding cash flows from discontinued operations (see “Note 3 – Discontinued Operations”).

OMIDRIA Royalties and OMIDRIA Contract Royalty Assets

OMIDRIA Royalties and OMIDRIA Contract Royalty Assets

We have rights to receive future royalties from Rayner on OMIDRIA net sales at rates that vary based on geography and certain regulatory contingencies. Therefore, future OMIDRIA royalties are treated as variable consideration. The sale of OMIDRIA qualified as an asset sale under GAAP. To measure the OMIDRIA contract royalty asset, we used the expected value approach which is the sum of the discounted probability-weighted royalty payments, net of tax, we would receive using a range of potential outcomes, to the extent that it is probable that a significant reversal in the amount of cumulative income recognized will not occur. Accordingly, the contract royalty asset excludes the achievement of the $200.0 million milestone payment and any foreign royalties to the extent it is probable that a significant reversal in the amount of cumulative income recognized will not occur. Royalties earned will primarily be recorded as a reduction to the OMIDRIA contract royalty asset. The amount recorded in discontinued operations will reflect interest earned on the outstanding OMIDRIA contract royalty asset and any amounts received that are different from the expected royalties recorded at closing. The OMIDRIA contract royalty asset will also be re-measured periodically using the expected value approach based on actual results and future expectations. Any required adjustment to the OMIDRIA contract royalty asset will be recorded into discontinued operations.
OMIDRIA Revenue Recognition

OMIDRIA Revenue Recognition

Prior to the sale of OMIDRIA on December 23, 2021, when we entered into a customer contract, we performed the following five steps: (i) identified the contract with a customer; (ii) identified the performance obligations in the contract; (iii) determined the transaction price; (iv) allocated the transaction price to the performance obligations in the contract; and (v) recognized revenue when (or as) we satisfy a performance obligation.

We generally recorded OMIDRIA product sales when the product was delivered to our wholesalers. OMIDRIA product sales were recorded net of wholesaler distribution fees and estimated chargebacks, rebates, returns and purchase-volume discounts. Accruals or allowances were established for these deductions in the same period when revenue was recognized, and actual amounts incurred were offset against the applicable accruals or allowances. We reflected each of these accruals or allowances as either a reduction in the related accounts receivable or as an accrued liability, depending on how the amount is expected to be settled.
Inventory

Inventory

We expense inventory costs related to product candidates as research and development expenses until regulatory approval is reasonably assured in the U.S. or the European Union (the “EU”). Once approval is reasonably assured, costs including amounts related to third-party manufacturing, transportation and internal labor and overhead will be capitalized.

Right of Use Assets and Related Lease Liabilities

Right of Use Assets and Related Lease Liabilities

We record operating leases as right-of-use assets and recognize the related lease liabilities equal to the fair value of the lease payments using our incremental borrowing rate when the implicit rate in the lease agreement is not readily available. We recognize variable lease payments, when incurred. Costs associated with operating lease assets are recognized on a straight-line basis within operating expenses over the term of the lease.

We record finance leases as a component of property and equipment and amortize these assets within operating expenses on a straight-line basis to their residual values over the shorter of the term of the underlying lease or the estimated useful life of the equipment. The interest component of a finance lease is included in interest expense and recognized using the effective interest method over the lease term.

We account for leases with initial terms of 12 months or less as operating expenses on a straight-line basis over the lease term.
Stock-Based Compensation

Stock-Based Compensation

Stock-based compensation expense is recognized for all share-based payments based on estimated fair values. The fair value of our stock options is calculated using the Black-Scholes option-pricing model which requires judgmental assumptions around volatility, forfeiture rates and expected option term. Compensation expense is recognized over the optionees’ requisite service periods, which is generally the vesting period, using the straight-line method. Forfeiture expense is estimated at the time of grant and revised in subsequent periods if actual forfeitures differ from those estimates.
Income Taxes

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases. Deferred tax assets and liabilities are measured using enacted tax rates applied to taxable income in the years in which those temporary differences are expected to be recovered or settled. We recognize the effect of income tax positions only if those positions are more likely than not of being sustained upon an examination. A valuation allowance is established when it is more likely than not that the deferred tax assets will not be realized.