Organization and Basis of Presentation	6 Months Ended
Jun. 30, 2022
Organization and Basis of Presentation
Organization and Basis of Presentation	Note 1—Organization and Basis of Presentation General 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). 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. Sale of OMIDRIA Assets On December 23, 2021, we completed the sale of OMIDRIA and certain related assets and liabilities to Rayner Surgical Inc. (“Rayner”) pursuant to an Asset Purchase Agreement dated December 1, 2021 (the “Asset Purchase Agreement”). We received a payment of $126.0 million at closing and receive royalty payments on worldwide sales of OMIDRIA and potentially a $200.0 million milestone payment if separate payment for OMIDRIA is secured in the U.S. for a continuous period of at least four years before January 1, 2025. As a result of the divestiture, the results of OMIDRIA operations (e.g., revenues and operating costs) are included in discontinued operations in our condensed consolidated statements of operations and comprehensive loss for all periods presented (see “Note 3 – Discontinued Operations”). 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 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. 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. 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. 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.

Organization and Basis of Presentation

6 Months Ended

Jun. 30, 2022

Organization and Basis of Presentation

Note 1—Organization and Basis of Presentation

General

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).

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.

Sale of OMIDRIA Assets

On December 23, 2021, we completed the sale of OMIDRIA and certain related assets and liabilities to Rayner Surgical Inc. (“Rayner”) pursuant to an Asset Purchase Agreement dated December 1, 2021 (the “Asset Purchase Agreement”). We received a payment of $126.0 million at closing and receive royalty payments on worldwide sales of OMIDRIA and potentially a $200.0 million milestone payment if separate payment for OMIDRIA is secured in the U.S. for a continuous period of at least four years before January 1, 2025.

As a result of the divestiture, the results of OMIDRIA operations (e.g., revenues and operating costs) are included in discontinued operations in our condensed consolidated statements of operations and comprehensive loss for all periods presented (see “Note 3 – Discontinued Operations”).

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

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.

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.

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.

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.