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Omeros Corporation Announces Reinstatement of Pass-Through Status for OMIDRIA®

October 1, 2018

SEATTLE--(BUSINESS WIRE)--Oct 1, 2018--Omeros Corporation (NASDAQ: OMER) announced that reinstatement of separate payment by the Centers for Medicare and Medicaid Services (CMS) under the pass-through program for the company’s cataract surgery drug OMIDRIA ® (phenylephrine and ketorolac intraocular solution) 1% / 0.3% is effective as of today, October 1, 2018. OMIDRIA, and a small number of other drugs used during procedures performed on Medicare Part B fee-for-service patients, received a two-year extension of pass-through reimbursement status as a result of a bipartisan Congressional response to nationwide concerns regarding limited access for Medicare beneficiaries to these drugs due to inadequate reimbursement when payments for the drugs are packaged into their respective procedural fees. The two-year extension of pass-through for these drugs, including OMIDRIA, was passed into law in March of this year as part of the Consolidated Appropriations Act of 2018, which mandates that the extension remain in effect until October 1, 2020.

Omeros continues to pursue permanent separate payment for OMIDRIA.

About OMIDRIA ®

Omeros’ OMIDRIA ® (phenylephrine and ketorolac intraocular solution) 1% / 0.3% is the first and only FDA-approved product of its kind and is marketed in the U.S. for use during cataract surgery or intraocular lens replacement to maintain pupil size by preventing intraoperative miosis (pupil constriction) and to reduce postoperative ocular pain. OMIDRIA also is the only NSAID-containing product FDA-approved for intraocular use. In post-launch studies across conventional and femtosecond laser-assisted cataract surgery, OMIDRIA has been shown (1) to be effective in patients with intraoperative floppy iris syndrome (IFIS), pseudoexfoliation and other ophthalmic conditions, (2) to significantly reduce complication rates, use of pupil-expanding devices, and surgical times, and (3) to significantly improve uncorrected visual acuity on the first day following cataract surgery. While OMIDRIA is broadly indicated for use in cataract surgery, the above outcomes are not in its currently approved labeling. Surgical time was not an endpoint in the OMIDRIA Phase 3 clinical trials and did not reach statistical significance in post hoc analysis of the Phase 3 data.

Important Safety Information for OMIDRIA ®

Systemic exposure of phenylephrine may cause elevations in blood pressure. In clinical trials, the most common reported ocular adverse reactions at two percent or greater are eye irritation, posterior capsule opacification, increased intraocular pressure, and anterior chamber inflammation; incidence of adverse events was similar between placebo-treated and OMIDRIA-treated patients. OMIDRIA must be added to irrigation solution prior to intraocular use.

About Omeros Corporation

Omeros is a commercial-stage biopharmaceutical company committed to discovering, developing and commercializing small-molecule and protein therapeutics for large-market as well as orphan indications targeting inflammation, complement-mediated diseases and disorders of the central nervous system. The company’s drug product OMIDRIA® (phenylephrine and ketorolac intraocular solution) 1% / 0.3% is marketed for use during cataract surgery or intraocular lens (IOL) replacement to maintain pupil size by preventing intraoperative miosis (pupil constriction) and to reduce postoperative ocular pain. In the European Union, the European Commission has approved OMIDRIA for use in cataract surgery and other IOL replacement procedures to maintain mydriasis (pupil dilation), prevent miosis (pupil constriction), and to reduce postoperative eye pain. Omeros has multiple Phase 3 and Phase 2 clinical-stage development programs focused on: complement-associated thrombotic microangiopathies; complement-mediated glomerulonephropathies; cognitive impairment; and addictive and compulsive disorders. In addition, Omeros has a diverse group of preclinical programs and a proprietary G protein-coupled receptor (GPCR) platform through which it controls 54 new GPCR drug targets and corresponding compounds, a number of which are in preclinical development. The company also exclusively possesses a novel antibody-generating platform.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, which are subject to the “safe harbor” created by those sections for such statements. All statements other than statements of historical fact are forward-looking statements, which are often indicated by terms such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “goal,” “intend,” “likely,” “look forward to,” “may,” “plan,” “potential,” “predict,” “project,” “prospects,” “should,” “will,” “would” and similar expressions and variations thereof. Forward-looking statements are based on management’s beliefs and assumptions and on information available to management only as of the date of this press release. Omeros’ actual results could differ materially from those anticipated in these forward-looking statements for many reasons, including, without limitation, risks associated with product commercialization and commercial operations, unproven preclinical and clinical development activities, regulatory oversight, intellectual property claims, competitive developments, litigation, and the risks, uncertainties and other factors described under the heading “Risk Factors” in the company’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 9, 2018. Given these risks, uncertainties and other factors, you should not place undue reliance on these forward-looking statements, and the company assumes no obligation to update these forward-looking statements, even if new information becomes available in the future.

View source version on businesswire.com:https://www.businesswire.com/news/home/20181001005373/en/

CONTACT: Cook Williams Communications, Inc.

Jennifer Cook Williams, 360-668-3701

Investor and Media Relations

jennifer@cwcomm.org

KEYWORD: UNITED STATES NORTH AMERICA WASHINGTON

INDUSTRY KEYWORD: HEALTH BIOTECHNOLOGY PHARMACEUTICAL RESEARCH SCIENCE GENERAL HEALTH

SOURCE: Omeros Corporation

Copyright Business Wire 2018.

PUB: 10/01/2018 08:45 AM/DISC: 10/01/2018 08:45 AM

http://www.businesswire.com/news/home/20181001005373/en

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