The following discussion and analysis should be read in conjunction with the
unaudited condensed consolidated financial statements and notes thereto included
elsewhere in this Quarterly Report on Form 10-Q.

Overview

We are 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, disorders of the central nervous system, and immune-related diseases, including cancers.


Our drug product OMIDRIA® is marketed in the United States for use during
cataract surgery or intraocular lens replacement for adult and pediatric
patients. We have multiple Phase 3 and Phase 2 clinical-stage development
programs in our pipeline, which are focused on: complement-mediated disorders,
including hematopoietic stem cell transplant-associated thrombotic
microangiopathy ("HSCT-TMA"), Immunoglobulin A ("IgA") nephropathy and atypical
hemolytic uremic syndrome ("aHUS"), as well as addiction. In addition, we have a
diverse group of preclinical programs, including GPR174, a novel target in
immuno-oncology that modulates a new cancer immunity axis that we recently
discovered. Small-molecule inhibitors of GPR174 are part of our proprietary G
protein-coupled receptor ("GPCR") platform through which we control 54 new GPCR
drug targets and their corresponding compounds. We also exclusively possess a
novel antibody-generating platform. We have retained control of all commercial
rights for OMIDRIA and each of our product candidates and programs.

Impact of Global Pandemic


The outbreak of the novel strain of coronavirus ("SARS-CoV-2") that causes the
Coronavirus Disease 2019 ("COVID-19") and the responses to the global pandemic
by various governmental authorities, the medical community and others continue
to have a significant impact on our business. In March 2020, ambulatory surgery
centers ("ASCs") and hospitals using OMIDRIA postponed nearly all cataract
surgery in response to recommendations from government and medical
organizations. As a result, we did not record any sales of OMIDRIA to our
wholesalers from March 25 to May 19, 2020. Beginning in the second half of May
2020, cataract surgery resumed to varying degrees in locations throughout the
country, generally under strict safety protocols. By the end of June 2020, the
run rate of weekly OMIDRIA sales had recovered to levels approximating those
seen prior to the pandemic. COVID-19 and the corresponding government response
could have a continuing adverse impact on our business, operations and financial
results. If the number of cataract procedures continues to be limited, either by
a need for time-consuming safety protocols, reduction in patient demand, or
prohibition on elective surgical procedures in some localities, then there may
be a corresponding reduction in demand for OMIDRIA. Additionally, continued
restrictions on visits to customer facilities by our field sales representatives
could lead to a further reduction in our OMIDRIA revenues. Due to the unknown
magnitude, duration and outcome of the COVID-19 pandemic, especially in light of
the variances both in the severity of and in the local governmental responses to
the COVID-19 pandemic across the U.S., it is not possible to estimate precisely
its impact on our business, operations or financial results; however, the impact
could be material.

Commercial Product - OMIDRIA® (phenylephrine and ketorolac intraocular solution) 1%/0.3%



OMIDRIA is approved by the FDA 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. Outside the U.S.,
we have received approval from the European Commission ("EC") to market OMIDRIA
in the European Economic Area ("EEA") for use during cataract surgery and other
IOL replacement procedures for maintenance of intraoperative mydriasis (pupil
dilation), prevention of intraoperative miosis and reduction of acute
postoperative ocular pain.

OMIDRIA is a proprietary drug product containing two active pharmaceutical ingredients: ketorolac, an anti-inflammatory agent, and phenylephrine, a mydriatic, or pupil dilating, agent. Cataract and other lens replacement surgery



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involves replacement of the original lens of the eye with an artificial
intraocular lens. OMIDRIA is added to standard irrigation solution used during
cataract and lens replacement surgery and is delivered intracamerally, or within
the anterior chamber of the eye, to the site of the surgical trauma throughout
the procedure. Preventing pupil constriction is essential for these procedures
and, if miosis occurs, the risk of damaging structures within the eye and other
complications increases, as does the operating time required to perform the
procedure.

We launched OMIDRIA in the U.S. in the second quarter of 2015 and sell OMIDRIA
primarily through wholesalers which, in turn, sell to ASCs and hospitals. The
Centers for Medicare & Medicaid Services ("CMS"), a part of the Department of
Health and Human Services ("HHS") and the federal agency responsible for
administering the Medicare program, granted transitional pass-through
reimbursement status for OMIDRIA in 2014, effective from January 1, 2015 through
December 31, 2017. Pass-through status allows for separate payment (i.e.,
outside the packaged payment rate for the surgical procedure) under Medicare
Part B. In March 2018, Congress extended pass-through reimbursement status for a
small number of drugs, including OMIDRIA, used during procedures performed on
Medicare Part B fee-for-service patients for an additional two years, running
from October 1, 2018 through September 30, 2020.

We are continuing to pursue permanent separate reimbursement for OMIDRIA beyond
the currently scheduled expiration of pass-through reimbursement on September
30, 2020, but we can provide no assurance that these efforts will be successful.
In its 2021 outpatient prospective payment system ("OPPS") proposed rule, CMS
confirmed the September 30, 2020 expiration of pass-through reimbursement for
OMIDRIA and indicated an intention to package payment for OMIDRIA with payment
for the associated surgical procedure in both the hospital outpatient department
and ASC settings.

However, CMS is required under the Substance Use-Disorder Prevention that
Promotes Opioid Recovery and Treatment for Patients and Communities Act to
review OPPS payments for opioids and evidence-based non-opioid alternatives for
pain management with a goal to ensure that there are not financial incentives to
use opioids instead of non-opioid alternatives, and in 2019 it codified
revisions to the ASC payment system pursuant to its policy to "unpackage and pay
separately at ASP+6 percent for the cost of non-opioid pain management drugs
that function as surgical supplies when they are furnished in the ASC setting."
CMS continued this policy, without change, in 2020 and has proposed to extend it
again in 2021. During the time that these revisions to the ASC payment system
have been in force, they have not applied to OMIDRIA because OMIDRIA has had
pass-through status and, accordingly, has not been packaged. OMIDRIA does not
contain an opioid, has an FDA-approved label indication for postoperative pain
reduction and CMS considers the drug to function as a surgical supply. Based on
these criteria, we believe that OMIDRIA will satisfy the criteria for separate
payment when provided in the ASC setting once it again becomes packaged
following expiration of its pass-through status, and that CMS is required to
apply this policy to OMIDRIA as it has to another drug meeting these criteria.
We intend to meet with HHS to seek separate payment for OMIDRIA when used in the
ASC setting for the fourth quarter of 2020. Although we can provide no assurance
regarding whether or when separate payment for OMIDRIA in the ASC setting will
be effective, if we are successful in securing separate payment for OMIDRIA for
the fourth quarter of 2020, we expect that OMIDRIA will receive similar separate
payment in the ASC setting throughout 2021. We also are continuing to pursue
other administrative and legislative avenues to secure permanent separate
payment or similar reimbursement for OMIDRIA beyond September 30, 2020; however,
we cannot provide assurance that these efforts will be successful. If these
efforts are not successful we expect to implement an alternative market
approach, however we are likely to have significantly reduced sales of OMIDRIA
until we are able to implement such strategy. For more information regarding
OMIDRIA reimbursement, see "Financial Summary" below.

In July 2018, we placed OMIDRIA on the market in the European Union ("EU"), on a
limited basis, which maintained the ongoing validity of the EMA for OMIDRIA. At
this time, we do not expect to see significant sales of OMIDRIA in any countries
within the EEA or other international territories.

Narsoplimab Developments



In March 2020, in response to a request from physicians at the Papa Giovanni
XXIII Hospital in Bergamo, Italy, we initiated a compassionate use program for
narsoplimab, our investigational human monoclonal antibody targeting
mannan-binding lectin-associated serine protease-2 (MASP-2), to treat COVID-19
patients with ARDS, a severe and life-threatening symptom of COVID-19.

                                      -19-

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The study included a total of six COVID-19 patients treated with narsoplimab
under compassionate use, all with ARDS and requiring continuous positive airway
pressure (CPAP) or intubation. At baseline, circulating endothelial cell (CEC)
counts and serum levels of interleukin-6 (IL-6), interleukin-8 (IL-8),
C-reactive protein (CRP), lactate dehydrogenase (LDH), D-dimer and aspartate
aminotransferase (AST) were markedly elevated. During the course of the study
institutional guidelines at the treating hospital were updated to require that
all COVID-19 patients in the hospital receive steroids. One patient treated with
narsoplimab did not receive steroids. Of the five narsoplimab-treated patients
who received steroids, two initiated them after already improving such that CPAP
was no longer required or was discontinued the following day. The study
evaluated CEC counts in a separate group of four patients receiving only
steroids for a short duration, and the counts were found to be unaffected by
steroid administration. This suggests that any beneficial effect of steroids on
COVID-19-associated endothelial damage may be delayed and had little effect on
the recovery course of the patients who initiated steroid treatment after
improving.

Narsoplimab treatment was associated with rapid and sustained reduction across
all of these markers of endothelial damage and inflammation. In addition,
massive bilateral pulmonary thromboses, seen in two of the patients, resolved
while on narsoplimab. All six narsoplimab-treated patients recovered and
survived. Narsoplimab was well tolerated in the study and no adverse drug
reactions were reported. Two control groups with similar baseline
characteristics were used for retrospective comparison, both showing substantial
mortality rates (ranging from 32% to 53%). A manuscript detailing the results of
a study evaluating narsoplimab in patients with severe COVID-19 has been
accepted for publication in the peer-reviewed journal of Immunobiology.

Endothelial damage and resultant thromboses are significant to the
pathophysiology of COVID-19, and we believe these data illustrate the importance
of inhibiting the lectin pathway to treat ARDS associated with the disease. As
we know through our work in HSCT-TMA, an endothelial injury syndrome,
endothelial damage activates the lectin pathway of complement. We believe the
results observed following narsoplimab treatment in severe COVID-19 patients
with ARDS at Papa Giovanni were consistent with those seen in HSCT-TMA and
underscore the mechanistic similarities between these two disorders. Narsoplimab
has been shown to inhibit lectin pathway activation and block microvascular
injury-associated thrombus formation as well as MASP-2-mediated activation of
kallikrein and factor XII. We believe such anticoagulant effects may provide
therapeutic benefits in both HSCT-TMA and COVID-19.

We currently are in discussions with agencies within the U.S. federal government
regarding potential funding to accelerate large-scale manufacturing of
narsoplimab to enable broader availability of narsoplimab for COVID-19 patients
and for other COVID-19-related programmatic activities.



Clinical Development Programs

Our clinical stage development programs include:

MASP-2 - narsoplimab (OMS721) - Lectin Pathway Disorders. Narsoplimab, also

referred to as OMS721, is our lead human monoclonal antibody targeting MASP-2,

a novel pro-inflammatory protein target involved in activation of the

complement system. The complement system plays a role in the body's

inflammatory response and becomes activated as a result of tissue damage or

trauma or microbial pathogen invasion. Inappropriate or uncontrolled activation

? of the complement system can cause diseases characterized by serious tissue

injury. MASP-2 is the effector enzyme of the lectin pathway of the complement

system, and the current development focus for narsoplimab is diseases in which

the lectin pathway has been shown to contribute to significant tissue injury

and pathology. When not treated, these diseases are typically characterized by

significant end organ injuries, such as kidney or central nervous system

injury.




We have completed our pivotal clinical trial for narsoplimab in HSCT-TMA, and
Phase 3 clinical programs are in process for narsoplimab in IgA nephropathy

and
aHUS.

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Narsoplimab has received multiple designations from the FDA and from the EMA across the three current indications. These include:

HSCT-TMA: In the U.S., the FDA has granted narsoplimab (1) breakthrough therapy

designation in patients who have persistent TMA despite modification of

immunosuppressive therapy, (2) orphan drug designation for the prevention

? (inhibition) of complement-mediated TMAs, and (3) orphan drug designation for

the treatment of HSCT-TMA. The EC also granted narsoplimab a designation as an


   orphan medicinal product for treatment in hematopoietic stem cell
   transplantation.


   IgA nephropathy: In the U.S., narsoplimab has received from the FDA

(1) breakthrough therapy designation for the treatment of IgA nephropathy and

? (2) orphan drug designation in IgA nephropathy. In Europe, narsoplimab has

received from the EC designation as an orphan medicinal product for the

treatment of primary IgA nephropathy.

aHUS: In the U.S., narsoplimab has received from the FDA (1) fast-track

? designation for the treatment of patients with aHUS and (2) orphan drug

designation for the prevention (inhibition) of complement-mediated thrombotic

microangiopathies.


In October 2019, we initiated the rolling submission to FDA of our BLA for
narsoplimab for the treatment of HSCT-TMA, a frequently lethal complication of
HSCT. A rolling submission enables us to submit sections of the BLA as they are
completed, which can accelerate the time to approval by allowing FDA to review
completed sections of the application as they are submitted rather than waiting
for the entire BLA to be submitted before beginning its review. The initial
submission to FDA included all of the nonclinical (i.e., pharmacology,
pharmacokinetics and toxicology) data, study reports, overview and summaries for
the nonclinical sections of the BLA. Following the successful completion of
manufacturing of the required process validation lots of narsoplimab, we
submitted in April 2020 the second part of the BLA containing information
related to the chemistry, manufacturing and controls ("CMC") for narsoplimab.
The remaining CMC information for the BLA was submitted to FDA in early August
2020. The clinical sections of the BLA are being prepared for submission and,
once all analyses are complete and compiled, these remaining parts of the BLA
will be submitted.

In March 2020, we reported clinical data from our pivotal trial of narsoplimab
in HSCT-TMA. The single-arm, open-label trial included safety and efficacy
endpoints that were previously agreed to with FDA. These endpoints were assessed
for (1) all 28 patients who received at least one dose of narsoplimab and (2)
patients who received the protocol-specified dosing of at least four weeks of
narsoplimab.

The primary efficacy endpoint in the trial was the proportion of patients who
achieved designated "responder" status based on improvement in HSCT-TMA
laboratory markers and clinical status. This is referred to as the "complete
response rate." The primary laboratory markers that were evaluated were platelet
count and LDH, levels, while improvement in clinical status was evaluated based
on organ function and transfusions. Patients who did not fully meet these
criteria were considered "non-responders."

The FDA-agreed efficacy threshold for the primary endpoint is a complete
response rate of 15%. Among patients who received at least one dose of
narsoplimab, the complete response rate was 54% (p<0.0001), while the complete
response rate among patients who received the protocol-specified narsoplimab
treatment of at least four weeks of dosing was 65% (p<0.0001).

Secondary endpoints in the trial were survival rates and change from baseline in
HSCT-TMA laboratory markers. Among the responder population, 93% of patients
survived for at least 100 days following HSCT-TMA diagnosis, while 83% of
patients who received treatment for at least four weeks and 68% of the total
treated population achieved this endpoint. Results also included statistically
significant improvements in platelet count, LDH and haptoglobin. The treated
population had multiple high-risk features that portend a poor outcome,
including the persistence of HSCT-TMA despite modification of immunosuppression
(which was a criterion for entry into the trial), graft-versus-host disease,
significant infections, non-infectious pulmonary

                                      -21-

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complications and neurological findings. Patients in the trial had a high
expected mortality rate, with 93% of them having multiple risk factors. The most
common adverse events observed in the trial were nausea, vomiting, diarrhea,
hypokalemia, neutropenia and fever, which are all common in stem-cell transplant
patients. Six deaths occurred during the trial. These were due to sepsis,
progression of the underlying disease, and graft-versus-host disease. All of
these are common causes of death in this patient population.

In Europe, EMA has confirmed narsoplimab's eligibility for EMA's centralized
review of a single MAA that, if approved, authorizes the product to be marketed
in all EU member states and EEA countries. We plan to complete the submission of
an MAA after our BLA submission has been filed with FDA. We are targeting to
complete our MAA submission in the first half of 2021. In October 2019 we
received a positive opinion from EMA on our pediatric investigation plan ("PIP")
for narsoplimab in the treatment of HSCT-TMA. A PIP outlining a development
program for the investigational product in the pediatric population must be
agreed with EMA as a prerequisite to EMA's acceptance of an MAA. The
narsoplimab PIP provides a study plan to evaluate the safety and effectiveness
of the drug for HSCT-TMA in patients from one month through 17 years of age. We
received a deferral for completion of our PIP until after approval of the
narsoplimab MAA.

In our IgA nephropathy program, patient enrollment continues in the narsoplimab
Phase 3 clinical trial, ARTEMIS-IGAN. The single Phase 3 trial design is a
randomized, double-blind, placebo-controlled multicenter trial in patients at
least 18 years of age with biopsy-confirmed IgA nephropathy and with 24-hour
urine protein excretion greater than one gram per day at baseline on optimized
renin-angiotensin system blockade. This trial includes a run-in period.
Initially, patients are expected to receive an IV dose of study drug each week
for 12 weeks; additional weekly dosing can be administered to achieve optimal
response. The primary endpoint, which we believe could suffice for full or
accelerated approval depending on the effect size, is reduction in proteinuria
at 36 weeks after the start of dosing. The trial is designed to allow
intra-trial adjustment in sample size. For the purposes of safety and efficacy
assessments, the initial sample size for the proteinuria endpoint is estimated
at 140 patients in each of the treatment and placebo groups. This will include a
subset of patients with high levels of proteinuria (i.e., equal to or greater
than 2 g/day) at baseline, and a substantial improvement at 36 weeks in this
subset of patients alone could potentially form the basis for approval. We
believe that the trial design will allow assessment for either full or
accelerated approval at 36 weeks based on proteinuria results either (1) across
the general population of study patients or (2) in the high-proteinuria subset
of patients.

The Phase 3 clinical program in patients with aHUS, in which patient enrollment
is ongoing, consists of one Phase 3 clinical trial - a single-arm (i.e., no
control arm), open-label trial in patients with newly diagnosed or ongoing aHUS.
This trial is targeting approximately 40 patients for full approval in Europe
and accelerated approval in the U.S. with approximately 80 total patients
required by FDA for full approval in the U.S.

PDE7 - OMS527. In our phosphodiesterase 7 (PDE7) program, we are developing

proprietary compounds to treat addiction and compulsive disorders as well as

? movement disorders. In September 2019 we reported positive results from our

Phase 1 single-ascending- and multiple-ascending-dose clinical trial designed

to assess safety, tolerability and pharmacokinetics of our lead compound in

healthy subjects.


In the double blind, randomized Phase 1 study, the study drug, referred to as
OMS182399, met the primary endpoints of safety and tolerability and showed a
favorable and dose-proportional pharmacokinetic profile supporting once-daily
dosing. There was no apparent food effect on plasma exposure to OMS182399. Our
focus is nicotine addiction, and we are planning our Phase 2 development
program.

MASP-3 - OMS906 - Alternative Pathway Disorders. As part of our MASP program,

we have identified mannan-binding lectin-associated serine protease-3

("MASP-3"), which has been shown to be the key activator of the complement

system's alternative pathway ("APC"), and we believe that we are the first to

make this and related discoveries associated with the APC. The complement

? system is part of the immune system's innate response, and the APC is

considered the amplification loop within the complement system. MASP-3 is

responsible for the conversion of pro-factor D to factor D; converted factor D

is necessary for the activation of the APC. Based on our alternative

pathway-related discoveries, we have expanded our intellectual property

position to protect our inventions stemming from these discoveries beyond


   MASP-2-associated inhibition of the


                                      -22-

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lectin pathway to include inhibition of the alternative pathway. Our current

primary focus in this program is developing MASP-3 inhibitors for the treatment

of disorders related to the APC. We believe that MASP-3 inhibitors have the

potential to treat patients suffering from a wide range of diseases and

conditions, including: paroxysmal nocturnal hemoglobinuria ("PNH"); C3

glomerulopathy; multiple sclerosis; arthritis; traumatic brain injury;

neuromyelitis optica; pauci-immune necrotizing crescentic glomerulonephritis;

disseminated intravascular coagulation; age-related macular degeneration;

asthma; dense deposit disease; Bechet's disease; aspiration pneumonia; TMA;

ischemia-reperfusion injury; Guillain Barre syndrome; Alzheimer's disease;

amylotrophic lateral sclerosis; systemic lupus erythematosus; diabetic

retinopathy; uveitis; chronic obstructive pulmonary disease; transplant

rejection; acute respiratory distress syndrome; antineutrophil cytoplasmic

antibody-associated vasculitis; anti-phospholipid syndrome; atherosclerosis;

myasthenia gravis and others. Our OMS906 monoclonal antibody program has

generated positive data in a well-established animal model associated with PNH,

as well as strong pharmacodynamic activity in non-human primates. The program

has also generated positive data in a well-established animal model of

arthritis.


In June 2020 we submitted a Clinical Trial Application ("CTA") to European
regulators to initiate clinical trials evaluating OMS906, the company's lead
human monoclonal antibody from its MASP-3 program. For maximum flexibility in
the conduct of our OMS906 clinical trials and to ensure timely progress of our
OMS906 program, we also submitted an IND application to FDA to initiate clinical
trials evaluating OMS906 in the United States. Assuming positive regulatory
review of the CTA or IND, as applicable, we plan to initiate the Phase 1
clinical trial evaluating OMS906 in either the United States or Europe, based on
the earliest availability of clinical testing sites. We currently expect to
begin enrollment in the Phase 1 trial in September. The Phase 1 clinical trial
will be a placebo-controlled, double-blind, single-ascending-dose and
multiple-ascending-dose study to evaluate the safety, tolerability,
pharmacodynamics and pharmacokinetics of OMS906 administered subcutaneously and
intravenously to healthy subjects. Following adequate collection and analysis in
the Phase 1 study data, the initial Phase 2 study for OMS906 is expected to be
conducted in patients with paroxysmal nocturnal hemoglobinuria (PNH), a rare,
acquired, life-threatening disease of the blood.

Preclinical Development Programs and Platforms

Our preclinical programs and platforms include:

Other MASP Inhibitor Preclinical Programs. We have generated positive

preclinical data from MASP-2 inhibition in in vivo models of age-related

macular degeneration, myocardial infarction, diabetic neuropathy, stroke,

ischemia-reperfusion injury, and other diseases and disorders. We are also

? developing a longer-acting second generation antibody targeting MASP-2, which

we are targeting for initiation of clinical trials in 2022. This program is

designated as "OMS1029." Development efforts are also directed to a

small-molecule inhibitor of MASP-2 designed for oral administration, as well as

small-molecule inhibitors of MASP-3 and bispecific small- and large-molecule


   inhibitors of MASP-2/-3.


   GPR174 and GPCR Platform. We have developed a proprietary cellular

redistribution assay which we use in a high-throughput manner to identify

synthetic ligands, including antagonists, agonists and inverse agonists, that

bind to and affect the function of orphan GPCRs. We have screened Class A

orphan GPCRs against our small-molecule chemical libraries using the cellular

redistribution assay and have identified and confirmed compounds that interact

with 54 of the 81 Class A orphan GPCRs linked to a wide range of indications

including cancer as well as metabolic, cardiovascular, immunologic,

inflammatory and central nervous system disorders. One of our priorities in

this program is GPR174, which is involved in the modulation of the immune

? system. In ex vivo human studies, our small-molecule inhibitors targeting

GPR174 upregulate the production of cytokines, block multiple checkpoints and

tumor promoters, and suppress regulatory T-cells. Based on our data, we believe

that GPR174 controls a major pathway in cancer and modulation of the receptor

could provide a seminal advance in immuno-oncologic treatments for a wide range

of tumors. Our studies in mouse models of melanoma and colon carcinoma found

that GPR174-deficiency resulted in significantly reduced tumor growth and

improved survival of the animals versus normal mice. Our recent discoveries

suggest a new approach to cancer immunotherapy that targets inhibition of

GPR174 and can be combined with and significantly improve the tumor-killing


   effects of adenosine pathway inhibitors. These discoveries include (1)
   identification of cancer-


                                      -23-

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  immunity pathways controlled by GPR174, (2) the identification of

phosphatidylserine as a natural ligand for GPR174, (3) a collection of novel

small-molecule inhibitors of GPR174 and (4) a synergistic enhancement of

"tumor-fighting" cytokine production by T cells following the combined

inhibition of both GPR174 and the adenosine pathway (e.g., A2A and/or A2B),

another key metabolic pathway that regulates tumor immunity. We continue to

focus on GPR174 and several other of our GPCR targets with the objective of

moving compounds targeting them into human trials.

Financial Summary



We recognized net losses of $33.3 million and $14.5 million for the three months
ended June 30, 2020 and 2019, respectively, and our OMIDRIA revenues were $13.5
million and $26.8 million for the same periods. As of June 30, 2020, we had
$16.1 million in cash and cash equivalents and short-term investments available
for general corporate use and $15.8 million in accounts receivable, net.

We expect our net losses will continue until such time as we derive sufficient
revenues from sales of OMIDRIA and/or other sources, such as licensing, product
sales and other revenues from our product candidates, that are sufficient to
cover our operating expenses and debt service obligations.

                           [[Image Removed: Graphic]]



              *Fiscal quarters without pass-through reimbursement.

** Fiscal quarters with reduced cataract procedures due to COVID-19



During the period from January 1, 2018 to September 30, 2018, OMIDRIA was not
reimbursed separately when used for procedures involving patients covered by
Medicare Part B, and our revenues decreased significantly. After reinstatement
of separate reimbursement for OMIDRIA in Q4 2018, our revenues quickly returned
to levels when separate reimbursement was available and quarter-over-quarter
revenue growth approximated historical rates. Due to the postponement of
elective surgical procedures, including cataract surgery, we did not make any
sales of OMIDRIA to our wholesalers from March 25 to May 19, 2020. Beginning in
the second half of May 2020, cataract procedures resumed to varying degrees in
locations throughout the country. By the end of June 2020, the run rate of
weekly OMIDRIA sales approximated those seen prior to the pandemic.

In its 2021 OPPS proposed rule, CMS confirmed the September 30, 2020 expiration
of pass-through reimbursement for OMIDRIA. However, in 2019 CMS codified
revisions to the ASC payment system pursuant to its policy to "unpackage and pay
separately at ASP+6 percent for the cost of non-opioid pain management drugs
that function as surgical supplies when they are furnished in the ASC setting."
CMS continued this policy, without change, in 2020 and has proposed to extend it
again in 2021. During the time that these revisions to the ASC payment system
have been in force, they have not applied to OMIDRIA because OMIDRIA has had
pass-through status and, accordingly, has not been packaged. OMIDRIA does not
contain an opioid, has an FDA-approved label indication for pain reduction and
CMS considers it to function as a surgical supply. Based on these criteria, we
believe that OMIDRIA will satisfy the criteria

                                      -24-

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for separate payment when provided in the ASC setting once it again becomes
packaged following expiration of its pass-through status. We are also continuing
to pursue other administrative and legislative avenues to secure permanent
separate payment or similar reimbursement for OMIDRIA beyond September 30, 2020.
If these efforts are not successful, we expect to implement an alternative
market approach, however we are likely to have significantly reduced sales of
OMIDRIA until we are able to implement such strategy. We may face difficulties
or delays in implementing such a strategy and, even if successfully implemented,
we cannot predict whether, or to what extent, our customers would maintain or
increase their utilization of OMIDRIA. See "Commercial Product - OMIDRIA"
earlier in this section for additional details regarding the pass-through
reimbursement status for OMIDRIA.

COVID-19 and uncertainty around pass-through status for OMIDRIA could have a
continuing adverse impact on our business, operations and financial results,
limiting the number of cataract procedures which may be performed and reducing
demand for our commercial drug product, OMIDRIA. COVID-19 and the corresponding
governmental response has and may continue to lead to disruptions in commercial
sales activities, delays in our clinical trials or in the submission or review
of regulatory applications. Due to the ongoing impact of the global pandemic on
OMIDRIA sales, as well as the uncertain reimbursement status for OMIDRIA
following the scheduled expiration of pass-through status on September 30, 2020,
we are unable to predict future OMIDRIA product sales, net.

Results of Operations

Revenue

Our revenue consists of OMIDRIA product sales to ASCs and hospitals in the U.S. Our product sales, net are as follows:




                        Three Months Ended        Six Months Ended
                            June 30,                 June 30,
                         2020         2019        2020        2019

                          (In thousands)           (In thousands)

Product sales, net $ 13,530 $ 26,753 $ 37,067 $ 48,532




During the three and six months ended June 30, 2020, OMIDRIA revenue was $13.5
million and $37.1 million as compared to $26.8 million and $48.5 million for the
three and six months ended June 30, 2019. The decrease in revenue during the
three and six months ended June 30, 2020 compared to the same period in the
prior year was due to COVID-19-related closings of ASCs and hospitals to
elective cataract procedures beginning in mid-March 2020. In early May, a large
number of states began re-opening, and, by the end of June 2020 the weekly run
rate of OMIDRIA sales had returned to levels approaching those seen prior to the
pandemic. Given the uncertainty and local variances in the severity and response
to the COVID-19 pandemic across the U.S., and the future of pass-through
reimbursement, we are not able to predict future OMIDRIA revenue.

Gross-to-Net Deductions



We record OMIDRIA product sales net of estimated chargebacks, rebates,
distribution fees and product returns. These deductions are generally referred
to as gross-to-net deductions. Our total gross-to-net provision for the three
and six months ended June 30, 2020 was 14.6% and 26.8% of gross OMIDRIA product
sales. This compares to 28.2% and 27.7% for the three and six months ended
June 30, 2019. The decrease in gross-to-net deductions as a percentage of sales
compared to the three months ended June 30, 2019 is primarily due to the
reversal of $2.4 million of product return allowances which were originally
recorded in Q1 2020 to account for potential product returns due to the
postponement of elective surgical procedures, including cataract surgery due to
the COVID-19 pandemic. The reserve was eliminated in Q2 2020 due to the
resumption of cataract procedures in mid-May 2020.

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A summary of our gross-to-net related accruals for the six months ended June 30,
2020 is as follows:


                                                     Distribution
                                                       Fees and
                                                       Product
                                    Chargebacks         Return
                                    and Rebates       Allowances        Total

                                                  (In thousands)
Balance as of December 31, 2019    $      10,240    $        2,237    $   12,477
Provisions                                11,534             2,022        13,556
Payments                                (16,086)           (3,147)      (19,233)
Balance as of June 30, 2020        $       5,688    $        1,112    $    6,800




Chargebacks and Rebates

We record a provision for estimated chargebacks and rebates at the time we
recognize OMIDRIA product sales revenue and reduce the accrual when payments are
made or credits are granted. Our chargebacks are related to a pharmaceutical
pricing agreement, a federal supply schedule agreement, a 340B prime vendor
agreement, a Medicaid drug rebate agreement and an off-invoice discount to our
ASC and hospital customers. We also record a provision for our
OMIDRIAssure® patient assistance and reimbursement services program and our
rebates under our purchase volume-discount programs.

Distribution Fees and Product Return Allowances


We pay our wholesalers a distribution fee for services they perform for us based
on the dollar value of their purchases of OMIDRIA. We record a provision for
these charges as a reduction to revenue at the time of sale to the wholesaler
and make payments to our wholesalers based on contractual terms.

We allow for the return of product up to 12 months past its expiration date, or
for product that is damaged or not used by our customers. We record a provision
for returns upon sale of OMIDRIA to our wholesaler. When a return or claim is
received, we issue a credit memo to the wholesaler against its outstanding
receivable to us or we reimburse the customer. Additionally, if separate
reimbursement for OMIDRIA does not last beyond September 30, 2020, it is
possible that wholesalers, ASCs and hospitals may return a portion of their
OMIDRIA on hand for a full refund of the purchase price. If a reserve is
required, we would record the reserve during our third quarter of 2020.

Research and Development Expenses


Our research and development expenses can be divided into three categories:
direct external expenses, which include clinical research and development,
preclinical research and development activities; internal, overhead and other
expenses; and stock-based compensation expense. Direct external expenses consist
primarily of expenses incurred pursuant to agreements with third-party
manufacturing organizations prior to receiving regulatory approval for a product
candidate, contract research organizations, clinical trial sites, collaborators,
consultants, and licensors consultants. Costs are reported in preclinical
research and development until the program enters the clinic. Internal, overhead
and other expenses consist of personnel costs, overhead costs such as rent,
utilities and depreciation and other miscellaneous costs. We do not generally
allocate our internal resources, employees and infrastructure to any individual
research project because we deploy them across multiple clinical and preclinical
projects that we are advancing in parallel.

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The following table illustrates our expenses associated with these activities:


                                             Three Months Ended        Six Months Ended
                                                 June 30,                 June 30,
                                              2020         2019        2020        2019

                                               (In thousands)           (In thousands)
Direct external expenses:
Clinical research and development:
MASP-2 Program - OMS721 (narsoplimab)      $    9,720    $  5,058    $ 22,935    $ 19,495
OMIDRIA - Ophthalmology                           433         379         884       1,087
PDE7 - OMS527                                     259         603       1,596       1,179
Total clinical research and development        10,412       6,040      25,415      21,761
Preclinical research and development            3,144       2,102       6,834       3,617
Total direct external expenses                 13,556       8,142      32,249      25,378
Internal, overhead and other expenses           8,945       9,320      17,716      16,845
Stock-based compensation expense                1,631       1,646       

3,078 3,140 Total research and development expenses $ 24,132 $ 19,108 $ 53,043 $ 45,363






Total direct clinical research and development expenses increased $4.4 million
and $3.7 million for the three and six months ended June 30, 2020 compared to
the same periods in 2019. The $4.4 million increase for the three months ended
June 30, 2020 is due to higher narsoplimab manufacturing costs and increased
costs supporting the preparation of our rolling BLA for HSCT-TMA in the U.S. The
increase for the six months ended June 30, 2020 is due to increased IgA
nephropathy clinical trial costs as well as higher costs supporting the
preparation of our rolling BLA in HSCT-TMA and the increased medical affairs
activities.

The $1.0 million and $3.2 million increase in our preclinical research and
development expense for the three and six months ended June 30, 2020 as compared
to the same periods in 2019 reflects additional third-party manufacturing scale
up costs related to our OMS906 program as well as development and analytical
activities related our MASP-2 long-acting second-generation antibody program.

We expect the majority of our research and development expenses for the
remainder of 2020 to be related to our narsoplimab program. We expect research
and development costs to increase in 2020 as we incur incremental manufacturing
costs in preparation for the anticipated commercial launch of narsoplimab in
HSCT-TMA in the U.S.

At this time, we are unable to estimate with certainty the longer-term costs we
will incur in the continued development of our product candidates due to the
inherently unpredictable nature of our preclinical and clinical development
activities, as well as the potential impacts of the COVID-19 pandemic. Clinical
development timelines, the probability of success and development costs can
differ materially as new data become available and as expectations change. Our
future research and development expenses will depend, in part, on the
preclinical or clinical success of each product candidate as well as ongoing
assessments of each program's commercial potential. In addition, we cannot
forecast with precision which product candidates, if any, may be subject to
future collaborations, when such arrangements will be secured, if at all, and to
what degree such arrangements would affect our development plans and capital
requirements.

We are required to expend substantial resources in the development of our
product candidates due to the lengthy process of completing clinical trials and
seeking regulatory approval. Any failure or delay in completing clinical trials,
or in obtaining regulatory approvals, could delay our generation of product
revenue and increase our research and development expenses.

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Selling, General and Administrative Expenses




                                               Three Months Ended        Six Months Ended
                                                   June 30,                 June 30,
                                                2020         2019        2020        2019

                                                 (In thousands)           (In thousands)
Selling, general and administrative
expenses, excluding stock-based
compensation expense                         $   14,740    $ 14,976    $ 30,747    $ 27,727
Stock-based compensation expense                  2,191       1,952       4,220       3,833
Total selling, general and administrative
expenses                                     $   16,931    $ 16,928    $ 34,967    $ 31,560

The increase in selling, general and administrative expenses during the six months ended June 30, 2020 compared to the same periods in 2019 was primarily due to increased pre-commercialization marketing activities for narsoplimab, including employee-related costs and professional service fees.

We expect that our selling, general and administrative expenses will increase in the remaining quarters of 2020 compared to current levels, primarily due to increased pre-commercialization activities for narsoplimab.



Interest Expense


                      Three Months Ended        Six Months Ended
                          June 30,                 June 30,
                       2020         2019        2020        2019

                        (In thousands)           (In thousands)
Interest expense    $    5,978     $ 5,530    $ 11,880    $ 11,130
Interest expense is comprised of interest related to our $210.0 million of 6.25%
Convertible Senior Notes due 2023 (the "Convertible Notes"). Non-cash interest
expense for the three and six months ended June 30, 2020 was $2.6 million and
$5.2 million, respectively. For more information regarding our Convertible
Notes, see Part II, Item 8, "Note 8--Convertible Senior Notes" in   our Annual
Report on Form 10-K for the year ended December 31, 2019.

Financial Condition - Liquidity and Capital Resources



As of June 30, 2020, we had $16.1 million in cash, cash equivalents and
short-term investments available for general corporate use held primarily in
money-market accounts as compared to $60.8 million at December 31, 2019. In
addition, as of June 30, 2020, we had $15.8 million in accounts receivable, net.
We have historically generated net losses and incurred negative cash flows from
operations and debt service. For the six months ended June 30, 2020, we incurred
net losses of $62.3 million and incurred negative cash flows from operations of
$46.7 million. We expect to continue to incur losses from operations until our
revenues exceed operating costs and debt service obligations.

In the second quarter of 2020, our business operations and liquidity continued
to be negatively affected by the reduction in demand for OMIDRIA caused by
restrictions on the number of elective surgical procedures which could be
performed. The continued increase in the number of COVID-19 cases within the
U.S. may lead to further restrictions on elective surgeries going forward. This
may continue to negatively impact our ability to cover our expenses in future
periods, with the magnitude being dependent on the duration and extent of
applicable limitations placed on the operations of our ASC and hospital
customers.

In mid-May, a large number of states began re-opening ASCs and hospitals to
cataract surgery with a number of our customers re-ordering OMIDRIA from our
wholesalers. We cannot yet predict with certainty the levels of OMIDRIA product
sales we will achieve. In addition, pass-through reimbursement for OMIDRIA is
currently scheduled to expire on September 30, 2020. We are pursuing legislative
and administrative means to extend permanent reimbursement but have not yet
received such an extension. However, regardless of whether we secure continued
pass-through treatment for OMIDRIA, our working capital needs are likely to
continue to increase, particularly if the disruption to our operations caused by
the COVID-19 pandemic continues. Consequently, we are unable to include these
factors in the determination regarding our prospects as a going concern.

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OMIDRIA revenues and amounts available under the Line of Credit Agreement with
Silicon Valley Bank, are determined based on eligible OMIDRIA accounts
receivable, less certain reserves. As of August 7, 2020, we were eligible to
borrow approximately $6.6 million under the Line of Credit Agreement. We have
also not included any proceeds from debt transactions or other financing
instruments in our analysis of our ability to continue as a going concern,
despite our successful track record in accessing capital through each of these
avenues nor any potential partnerships related to our products or product
candidates. The conditions described above when evaluated within the constraints
of the accounting literature raise substantial doubt with respect to our ability
to meet our obligations through August 10, 2021 and, therefore, to continue as a
going concern.

We plan to continue to fund our operations through proceeds from sales of
OMIDRIA, and we may utilize funds available under our receivable-based line of
credit to the extent it is available to us. Should it be necessary or determined
to be strategically advantageous, we may pursue debt financings, public and
private offerings of our equity securities similar to those we have completed
previously, or other strategic transactions, which may include licensing a
portion of our existing technology. If these capital sources, for any reason,
are needed but inaccessible, it would have a significantly negative effect on
our financial condition. Should it be necessary to manage our operating
expenses, we would reduce our projected cash requirements through reduction of
our expenses by delaying clinical trials, reducing selected research and
development efforts, or implementing other restructuring activities.

Cash Flow Data


                                 Six Months Ended June 30,
                                    2020             2019

                                       (In thousands)
Selected cash flow data
Cash provided by (used in):
Operating activities           $     (46,738)     $  (29,537)
Investing activities           $       43,370     $    26,499
Financing activities           $        2,248     $     1,163




Operating Activities. Net cash used in operating activities for the six months
ended June 30, 2020 increased by $17.2 million as compared to the same period in
2019. The net increase is primarily due to an increase in our net loss of $23.5
million and an increase of $20.1 million in cash used in accounts payable and
accrued expense offset by a $25.1 million increase in cash provided from
collections of accounts receivable.

Investing Activities. Cash flows from investing activities primarily reflect
cash used to purchase short-term investments and proceeds from the sale of
short-term investments, thus causing a shift between our cash and cash
equivalents and short-term investment balances. Because we manage our cash usage
with respect to our total cash, cash equivalents and short-term investments, we
do not consider fluctuations in cash flows from investing activities to be
important to the understanding of our liquidity and capital resources.

Net cash provided by investing activities during the six months ended June 30,
2020 was $43.4 million, an increase of $16.9 million for the same period in 2019
driven by an increase in proceeds from sale and maturities of investments of
$19.5 million offset by purchases of $2.7 million.

Financing Activities. Net cash provided by financing activities during the
six months ended June 30, 2020 was $2.2 million, an increase of $1.1 million
compared to the same period in 2019. The increase for the six months ended June
30, 2020 compared to the prior year was due to incremental proceeds from
exercises of stock options.

Line of Credit Agreement. Our Line of Credit Agreement with Silicon Valley Bank
provides for a $50.0 million revolving line of credit facility. Under the Line
of Credit Agreement we may draw, on a revolving basis, up to the lesser of $50.0
million or 85.0% of our eligible accounts receivable, less certain reserves. The
Line of Credit Agreement is secured by all our assets excluding intellectual
property and development program inventories and matures on August 2, 2022. As
of June 30, 2020, we had no outstanding borrowings under the Line of Credit

Agreement, and we were in

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compliance with all covenants in all material respects. See earlier discussion under "Liquidity and Capital Resources" for further detail regarding the availability of the line of credit.

Contractual Obligations and Commitments

The following table presents a summary of our contractual obligations and commitments as of June 30, 2020.




                                                                  Payments Due Within
                                                                                     More than
                                            1 Year      2-3 Years     4-5 Years       5 Years        Total

                                                                    (In thousands)
Operating leases                           $  3,210    $    13,214    $   13,795    $    19,590    $  49,809

Finance leases (principal and interest)         697          1,693           152              -        2,542
Unsecured convertible senior notes            6,563         26,250       223,125              -      255,938
Goods & services                             17,621            429            54              -       18,104
Total                                      $ 28,091    $    41,586    $  237,126    $    19,590    $ 326,393




Lease Agreements

We lease our office and laboratory space in The Omeros Building under a lease
agreement with BMR - 201 Elliott Avenue LLC. The initial term of the lease ends
in November 2027, and we have two options to extend the lease term, each by
five years. As of June 30, 2020, the remaining aggregate non-cancelable rent
payable under the initial term of the lease, excluding common area maintenance
and related operating expenses, is $49.8 million.

Convertible Notes

For more information regarding our Convertible Notes, see Part II, Item 8, "Note 8--Convertible Senior Notes" in our Annual Report on Form 10-K for the year ended December 31, 2019.

Goods and Services

We have certain other non-cancelable obligations under various agreements that relate to goods and services. As of June 30, 2020, our aggregate firm commitments were $18.1. million.

We may be required, in connection with in-licensing or asset acquisition agreements, to make certain royalty and milestone payments and we cannot, at this time, determine when or if the related milestones will be achieved or whether the events triggering the commencement of payment obligations will occur. Therefore, such payments are not included in the amount above.

Critical Accounting Policies and Significant Judgments and Estimates

There have not been any material changes in our critical accounting policies and significant judgments and estimates as disclosed in Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" included in our Annual Report on Form 10-K for the year ended December 31, 2019.

Off-Balance Sheet Arrangements

We have not engaged in any off-balance sheet arrangements.





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