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Onconova Therapeutics

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FY2014 Annual Report · Onconova Therapeutics
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SECURITIES AND EXCHANGE COMMISSION

UNITED STATES

Washington, D.C. 20549

Form 10-K

(Mark one)

(cid:2) ANNUAL REPORT PURSUANT TO SECTION 13 OR  15(d) OF  THE  SECURITIES

EXCHANGE ACT OF 1934

(cid:3) TRANSITION REPORT PURSUANT  TO SECTION 13 OR  15(d) OF  THE  SECURITIES

EXCHANGE ACT OF 1934

For the fiscal year  ended December 31, 2014

or

For the transition period from 

 to 

Commission file number 001-36020

Onconova Therapeutics, Inc.

(Exact name of registrant as specified in its  charter)

Delaware

(State or other jurisdiction of

incorporation  or organization)

375 Pheasant Run, Newtown, PA

(Address of principal executive  offices)

22-3627252

(I.R.S. Employer

Identification No.)

18940

(Zip Code)

(Registrant’s telephone number, including area code)

(267) 759-3680

Securities registered pursuant to Section 12(b) of the Act:

Title of  each class

Name of  each  exchange on which registered

Common Stock, par value $.01 per share

The NASDAQ Stock Market  LLC

Securities registered pursuant to Section  12(g)  of the Act: None

Indicate by check mark if the registrant is a  well-known  seasoned issuer, as defined in  Rule 405 of the Securities Act.

Yes  (cid:3) No  (cid:2)

Yes  (cid:3) No (cid:2)

Indicate by check mark if the registrant is not  required  to file reports pursuant to  Section 13 or Section  15(d)  of the Act.

Indicate by check mark whether the registrant (1) has filed all  reports required  to be filed by Section 13 or 15(d) of the

Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required

to file such reports), and (2) has been subject to such  filing requirements for the past 90 days. Yes (cid:2) No (cid:3)

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any,

every Interactive Data File required to  be submitted and posted pursuant to Rule  405  of Regulation S-T (§232.405 of this

chapter) during the preceding 12 months (or for such  shorter period that the registrant  was  required to  submit and post such

files). Yes (cid:2) No  (cid:3)

Indicate by check mark if disclosure of delinquent  filers  pursuant  to Item 405 of Regulation S-K is not contained herein,

and will not be contained, to the best of  registrant’s knowledge, in definitive proxy or information statements incorporated by

reference  in Part III of this Form 10-K or any amendment to this Form 10-K.  (cid:3)

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer,  a  non-accelerated filer,  or

a  smaller reporting company. See the definitions of  ‘‘large accelerated filer,’’ ‘‘accelerated filer’’  and ‘‘smaller reporting

company’’  in Rule 12b-2 of  the Exchange  Act.

Large accelerated filer (cid:3)

Accelerated filer (cid:3)

Non-accelerated filer (cid:2)

(Do  not check if a

smaller reporting company)

Smaller reporting company  (cid:3)

Indicate by check mark whether the registrant is a shell  company (as defined in Rule12b-2 of  the Act). Yes (cid:3) No (cid:2)

As of  June 30, 2014, the last business day of  the registrants most recently completed second fiscal quarter, the aggregate

market value of the registrant’s voting  stock held  by non-affiliates was  approximately $68.7  million, based on  the number of

shares held by non-affiliates as of June 28, 2014, and the last reported  sale price of the registrant’s common stock on the

NASDAQ Global Select Market.

There were 21,703,173 shares of Common Stock outstanding as of  March  18, 2015.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of our Proxy Statement for the 2015 Annual Meeting of  Stockholders, to be filed within 120 days  of

December 31, 2014, are incorporated by reference in Part III. Such Proxy Statement, except for the parts therein which have

been specifically incorporated by reference, shall not be deemed ‘‘filed’’ for the purposes  of this Annual Report on Form 10-K.

ONCONOVA THERAPEUTICS, INC.

INDEX TO REPORT ON FORM 10-K

Item 1:

Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 1A: Risk Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 1B: Unresolved Staff Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 2:

Item 3:

Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 4: Mine Safety Disclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 5: Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer

Purchases of Equity Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 6:

Selected Financial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 7: Management’s Discussion and Analysis of Financial Condition  and Results of

Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 7A: Quantitative and Qualitative Disclosures About Market Risk . . . . . . . . . . . . . . . . . . .

Item 8:

Item 9:

Financial Statements and Supplementary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changes in and Disagreements With Accountants on Accounting and Financial

Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 9A: Controls and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 9B: Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 10: Directors, Executive Officers and Corporate Governance . . . . . . . . . . . . . . . . . . . . .

Item 11: Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 12:

Security Ownership of Certain Beneficial Owners and Management and Related

Stockholder Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 13: Certain Relationships and Related Transactions, and Director Independence . . . . . . .

Item 14:

Principal Accounting Fees and Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART I

PART II

PART III

PART IV

Item 15: Exhibits, Financial Statement Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS AND INDUSTRY DATA

(cid:129) the successful development of our commercialization capabilities, including sales and  marketing

capabilities;

(cid:129) recently enacted and future legislation and regulation regarding the healthcare system;

(cid:129) the success of competing therapies and products that are or  become available;

(cid:129) our dependence on collaboration agreements with other pharmaceutical  companies, such as

Baxter and SymBio, for commercialization of our products and our ability to achieve certain

milestones under those agreements; and

(cid:129) the performance of third parties, including contract research organizations, or CROs and third-

party manufacturers.

Any forward-looking statements that we make in this  Annual Report speak only as of the date of

such statement, and we undertake no obligation to update such  statements to reflect events or

circumstances after the date of this Annual Report or to reflect the occurrence of unanticipated events.

Comparisons of results for current and any prior periods are not intended to express  any future trends

or indications of future performance, unless  expressed as such, and should only be viewed as historical

data.

You should also read carefully the factors described in the ‘‘Risk Factors’’ section of this Annual

Report and elsewhere to better understand  the risks and uncertainties inherent in our business and

underlying any forward-looking statements. As a result  of these factors,  actual results could differ

materially and adversely from those anticipated or  implied in the forward-looking statements  in this

report and you should not place undue reliance on any forward-looking statements.

This Annual Report on Form 10-K (‘‘Annual Report’’) includes forward-looking statements. We

may, in some cases, use terms such as ‘‘believes,’’ ‘‘estimates,’’ ‘‘anticipates,’’ ‘‘expects,’’ ‘‘plans,’’
‘‘intends,’’ ‘‘may,’’ ‘‘could,’’ ‘‘might,’’ ‘‘will,’’ ‘‘should,’’ ‘‘approximately’’ or other words that convey
uncertainty of future events or outcomes to identify these forward-looking statements.  Forward-looking
statements appear in a number of places throughout this Annual Report and include statements
regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning,
among other things, our ongoing and  planned preclinical development and clinical trials, the timing of
and our ability to make regulatory filings and  obtain and maintain regulatory approvals for our product
candidates, protection of our intellectual property portfolio, the degree of clinical utility of our
products, particularly in specific patient populations, our  ability  to  develop  commercial and
manufacturing functions, expectations  regarding clinical trial data, our results of operations, cash  needs,
financial condition, liquidity, prospects,  growth and strategies, the industry in which we  operate and the
trends that may affect the industry or  us.

By their nature, forward-looking statements involve risks and uncertainties because they relate to
events, competitive dynamics and industry change,  and depend on the economic  circumstances that may
or may not occur in the future or may occur on longer or shorter timelines than anticipated. Although
we believe that we have a reasonable basis for  each forward-looking statement contained in this Annual
Report, we caution you that forward-looking statements are not  guarantees  of future performance and
that our actual results of operations, financial condition and liquidity, and the development  of the
industry in which we operate may differ materially from the forward-looking statements contained in
this Annual Report. In addition, even if our results  of  operations, financial condition and  liquidity, and
events in the industry in which we operate are consistent  with the forward-looking statements contained
in this Annual Report, they may not be predictive of results or developments in future periods.

Actual results could differ materially from our  forward-looking statements due to a number of

factors, including risks related to:

(cid:129) our need for additional financing and our ability to obtain sufficient funds on acceptable terms
when needed, and our current plans and future needs to scale  back operations if adequate
financing is not obtained;

(cid:129) our estimates regarding expenses, future revenues, capital requirements and needs for additional

financing;

(cid:129) the success and timing of our preclinical studies  and clinical trials  and regulatory approval of

protocols for future clinical trials;

(cid:129) the difficulties in obtaining and maintaining regulatory approval of our  product candidates, and

the labeling under any approval we may obtain;

(cid:129) our plans and ability to develop, manufacture and commercialize our product candidates;

(cid:129) our failure to recruit or retain key scientific or management personnel or to retain our executive

officers;

(cid:129) the size and growth of the potential markets for our product candidates and our ability to serve

those markets;

(cid:129) regulatory developments in the United States and foreign countries;

(cid:129) the rate and degree of market acceptance of any  of our product candidates;

(cid:129) obtaining and maintaining intellectual property  protection for our product candidates and our

proprietary technology;

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(This page has been left blank intentionally.)

ITEM 1. BUSINESS

Overview

PART I

We are a clinical-stage biopharmaceutical company focused on discovering and developing novel

small molecule drug candidates to treat cancer. Using our proprietary chemistry platform, we have

created an extensive library of targeted anti-cancer agents designed to work against specific cellular

pathways important to cancer cells. We believe that the drug candidates in  our pipeline have the

potential to be efficacious in a variety of cancers. We have three clinical-stage product candidates (one

of which is being developed for treatment of acute radiation syndromes, not cancer) and several

preclinical programs, with the majority of our current efforts focused on our lead product candidate,

rigosertib, which is being tested as a single agent and in combination with azacitidine, in clinical trials

of patients with myelodysplastic syndromes, or MDS, and related cancers.

We are currently developing the protocol for a new Phase 3 clinical trial of rigosertib, our  most

advanced product candidate.  Based on separate discussions with  both the U.S. Food  and Drug

Administration, or FDA, and European Medicines Agency, or EMA, we anticipate a randomized

controlled trial of rigosertib IV in a patient subset  of more homogeneous patient population  than in

our previous clinical trials, which has  appeared to derive a greater benefit from rigosertib  treatment in

our previous clinical trials. We are also continuing the Phase 2 portion of a  clinical trial of  rigosertib

oral in combination with azacitidine for patients with MDS and acute myelogenous leukemia, or AML.

Additionally, in an extended portion of a Phase 2  clinical trial of rigosertib oral for patients with

lower-risk MDS we are assessing the utility  of  bone marrow genomic methylation patterns and genomic

DNA testing for the identification of patients  more  likely  to respond to rigosertib. We anticipate

presenting interim Phase 2 data from our combination trial, as well as data from in vitro studies

evaluating the activity of rigosertib in  lower-risk MDS, during the second quarter of 2015.

At December 31, 2014, we had approximately $43.6 million in cash and cash equivalents. We do

not believe that we will be able to complete our planned new Phase 3 clinical trial of rigosertib IV

without raising additional funds. Accordingly, we are taking actions to conserve cash (including

headcount reductions) and are evaluating other cash conservation  measures, while exploring various

dilutive and non-dilutive sources of funding. If we are not able to raise sufficient funds when needed,

our operations, including our existing and planned clinical trials, will be negatively impacted.

Rigosertib

Rigosertib is being tested as a single agent and in combination with azacitidine, in clinical trials of

patients with MDS and related cancers. To date, we have enrolled  more than 1,000 patients in

rigosertib clinical trials. We have collaboration agreements with Baxter Healthcare SA, or Baxter, and

SymBio Pharmaceuticals Limited, or SymBio, which grant Baxter certain rights  to  commercialize

rigosertib in Europe and grant SymBio certain rights to commercialize rigosertib in Japan and Korea.

We have retained development and commercialization rights to rigosertib in the rest of the world,

including in the United States.

Rigosertib Inhibits Signaling Pathways Associated with Cancer Cell Growth and Survival

Rigosertib is a small molecule that inhibits cellular signaling  in cancer cells by acting as a Ras

mimetic. This is believed to be mediated by the binding of rigosertib to the Ras-binding domain, or

RBD, found in many Ras effector proteins, including the Raf and PI3K kinases. In contrast to many

other kinase inhibitors, rigosertib does not interact at the adenosine triphosphate binding site, but

appears to act via allosteric inhibition. This mechanism of action exemplifies a new approach to block

the interactions between Ras and its targets containing RBD sites.

1

Myelodysplastic Syndromes

Treating Myelodysplastic Syndromes

MDS is a group of blood disorders that affect bone marrow function. MDS typically affects older
patients. In MDS, the bone marrow  cells  become dysplastic, or defective. Therefore blood  cells do not
develop normally, such that too few  healthy blood cells  are released  into the blood stream, leading to
low blood cell counts, or cytopenias. Thus,  many patients with MDS require frequent blood
transfusions. In most cases, the disease  worsens  and the  patient develops  progressive bone marrow
failure. In advanced stages of the disease, immature blood cells, or blasts, leave the bone marrow and
enter the blood stream, leading to AML,  which occurs in approximately one-third of patients with
MDS.

Based on Surveillance Epidemiology and End Results (SEER) data from the National Cancer

Institute, a marketing analytics firm has estimated the 2016  incidence of MDS will  be  approximately
17,390 cases and the prevalence of MDS  at approximately 61,690  cases  in the United States. We believe
that the actual incidence numbers may be higher, due  to  underdiagnosing and underreporting of new
cases of MDS to centralized cancer registries, and that the incidence of MDS  in the United States is
likely to increase, due to an aging population, improved  disease awareness and diagnostic precision, and
an increase in the number of cases of secondary, often chemotherapy-induced, MDS.

MDS is typically diagnosed using routine blood  tests  or by  observing combination of certain

symptoms, such as shortness of breath, weakness, easy  bruising or bleeding,  or fever with frequent
infections. A diagnosis of MDS is confirmed by evaluating  a  bone marrow biopsy/aspirate showing
dysplastic changes, and, in more advanced cases,  the presence of excess blasts, meaning  that blasts
account for more than 5% of the total number of nucleated cells in the bone marrow. Because the
bone marrow and blood cells in MDS patients can undergo different kinds of abnormal changes,
several classification systems have been developed to gauge  the severity  of disease and help determine
prognosis and treatment strategy. We  use two standard classification systems, the French-American-
British morphological classification system, or the FAB system, as modified by the World Health
Organization, or WHO, and the recently revised International Prognostic Scoring System, or  IPSS-R, to
define patient inclusion criteria for our rigosertib  trials in MDS:

(cid:129) FAB Classification/WHO Diagnostic Criteria. In 1999, WHO modified the FAB system for MDS

that had been based primarily on the percentage of blasts in the  bone marrow and  blood.
Sub-categories under the WHO classification are: Refractory anemia, or RA (less than  5%
blasts), RA with ringed sideroblasts,  or RARS, refractory cytopenia with multilineage dysplasia,
or RCMD, RA with excess blasts-1 (5-9% blasts),  or RAEB-1, RA with excess blasts-2, or
RAEB-2  (10-19% blasts), MDS with  isolated deletion of the long arm  of chromosome 5, or
del(5q), and MDS unclassified, or MDS-U. Patients classified as RAEB in transformation
(21-29% blasts), or RAEB-t, under the FAB system are reclassified in the WHO system as AML
patients.

IPSS-R Diagnostic Criteria.

IPSS-R ranks the severity of chromosome abnormalities, number  of
cytopenias, and percentage of bone marrow blasts observed at diagnosis to calculate a five-level risk
score: Very Low, Low, Intermediate, High and Very High. MDS patients are generally classified using
IPSS-R in order to assess the risk of dying or having their disease progress to AML. Patients with
RAEB-1, RAEB-2 or RAEB-t under the FAB/WHO criteria or patients  with IPSS-R risk scores of
High or Very High are generally considered to have higher-risk MDS, with a median survival of less
than two years. By contrast, patients with IPSS-R scores of Very Low, Low and Intermediate are
generally considered to have lower risk MDS, with an overall survival of approximately three to nine
years.

Allogeneic peripheral blood stem cell or bone marrow transplantation is a potentially curative

therapy for MDS. However, since most patients with MDS are elderly and therefore ineligible  for

transplantation due to the arduous nature of the procedure, this option is generally considered only for

the small proportion of younger MDS patients.

We believe that most higher-risk and some lower-risk MDS patients in  the United States are

treated with azacitidine and decitabine, the two approved hypomethylation drugs for treatment of

MDS. A provider of information services and technology for the healthcare  industry estimates that in

the year ended June 2012, approximately 12,500 MDS patients in the  United States received treatment

with hypomethylating agents.

A significant number of higher-risk MDS patients fail or cannot tolerate treatment  with azacitidine

or decitabine, which represent the current standard of care for higher-risk MDS patients, and almost all

patients who initially respond to therapy eventually relapse. Median survival time of MDS patients who

have failed hypomethylating drugs is less than six months. Accordingly, we believe that a new  therapy

that would extend survival in these patients would represent a major contribution in the treatment of

MDS.

Hypomethylating drugs work by inhibiting the methylation of DNA. Methylation is a biochemical

process involving the addition of a methyl group to DNA and plays an important role in gene

expression during cell division and differentiation. By inhibiting methylation, hypomethylating drugs kill

rapidly dividing cells, including cancer cells that are no longer responsive to normal growth control

mechanisms. Hypomethylation may also restore normal function to genes that are critical for

differentiation and proliferation. By contrast, rigosertib works by blocking multiple oncogenic  pathways

through a Ras mimetic mechanism. We believe that, because rigosertib has a mechanism of action  that

is different from hypomethylating agents, it  may be active in patients who have failed treatment with

those drugs. Furthermore, rigosertib’s unique mechanism of action has been shown to combine well

with hypomethylating drugs, and preclinical studies testing the combination of rigosertib with

azacitidine have demonstrated synergy between the two agents. Based on these studies and our current

understanding of the mechanism of action of rigosertib, we believe that rigosertib has the potential  to

be developed in combination with azacitidine  for front-line MDS and second-line AML.

Lower-risk MDS patients are those categorized as Very Low, Low or Intermediate risk by the

IPSS-R scoring system with transfusion-dependent anemia. The subset of del(5q) cytogenetic

abnormality patients are generally treated with lenalidomide (Revlimid(cid:2)). For all other lower-risk MDS

patients, supportive care employing blood products, such as red blood cell and platelet transfusions,

and erythroid stimulating agents, is the mainstay of therapy. Frequent transfusions introduce many

risks, including iron overload, blood borne infections and immune-related reactions. We believe that a

therapeutic agent that could lower or eliminate the need  for transfusions over an extended period of

time would fulfill a significant unmet medical need for this patient population.

Rigosertib IV for higher-risk MDS

In February 2014, we announced topline survival results from a multi-center Phase 3 clinical trial

of rigosertib IV as a single agent, which we refer to as our ‘‘ONTIME’’ trial. The ONTIME trial was a

randomized, controlled study, where eligible patients must have progressed on, failed to respond to or

relapsed after prior therapy with HMAs, have excess blasts (5-30%  blasts) and have at least one

cytopenia. There is currently no approved drug for this group of patients and the current standard

treatment consists of best supportive care, which is treatment intended to manage disease-related

symptoms. In the ONTIME trial, both groups of patients received best supportive care,  with the

treatment group of patients also receiving rigosertib. The study employed a 2:1 randomization in which

two-thirds of the patients received rigosertib plus best supportive care, and one-third of patients

2

3

received only best supportive care. The protocol for this trial was developed under a FDA Special
Protocol Assessment, or SPA. The EMA also  provided Scientific Advice. Complete results from  the
trial, presented at the 2014 Annual American Society of Hematology Meeting, or 2014  ASH Meeting,
showed numerical improvement in median overall survival in the rigosertib treated patients. However,
the observed improvement in survival of 2.3  months was not sufficient to establish the required level of
statistical significance and, therefore did not achieve the  primary  endpoint of the trial.

While the ONTIME trial did not meet its primary endpoint in the intent-to-treat population,
improvements in median overall survival (mOS) were  observed in various pre-specified and exploratory
subgroups of patients, including ‘‘primary HMA failure’’ patients (those who had progressed on or
failed to respond to previous treatment with HMAs) and patients in the IPSS-R Very High Risk
category. Among the 184 patients (62% of patients  in the trial)  with primary HMA  failure, mOS was
8.6 months in the rigosertib arm (127 patients) compared to 5.3 months in the best supportive care arm
(57 patients), with a hazard ratio of 0.69  and a p value of 0.040. Among the 134 patients (45% of
patients in the trial) who were in the IPSS-R  Very  High Risk category, mOS  was 7.6 months in the
rigosertib arm (93 patients) compared to 3.2 months in  the best  supportive care arm (41 patients), with
a hazard ratio of 0.56 and a p value of 0.005.

During 2014 and January 2015, we held meetings with the FDA, EMA, and several European

national regulatory agencies to discuss and seek guidance on a path for approval of rigosertib IV in
higher-risk MDS. We discussed, with both the FDA and EMA, potential for refining the clinical
indication based on the demonstration  of heterogeneity in the ONTIME trial patient population and
the consequent definition of subgroups with high prognostic risk  that appear to derive a greater benefit
from rigosertib treatment. In January 2015, both the FDA  and EMA expressed a preference for
another randomized controlled trial with overall survival and overall response as clinically meaningful
endpoints. Based on the feedback from the FDA  and the  EMA, and utilizing the results of the
ONTIME trial, a protocol for a randomized controlled trial  in a more homogeneous patient population
is being developed. Pending regulatory approvals and appropriate financing,  we hope to initiate
enrollment in this trial as early as the second half  of 2015. In light of the regulatory guidance, we
stopped patient accrual in our 04-24 single-arm clinical trial of rigosertib IV in higher-risk  MDS during
the first quarter of 2015.

Safety and Tolerability of rigosertib IV in  MDS and other hematologic  malignancies

More than 500 patients have been enrolled in the six Phase 1, 2 and 3 studies  of IV rigosertib as

monotherapy in MDS and other hematologic malignancies. Three of the Phase 1 and 2 studies are
completed and clinical study reports (CSRs) are available. The three other  studies are  ongoing; thus
final data are subject to change. The most frequent  reason for study discontinuation (46.9%) was
progressive disease (PD) based on 2006 International Working Group or  IWG criteria  (43.5%) or
symptomatic deterioration (3.4%). The occurrence of adverse events (AEs) led to withdrawal of 22.7%
of patients. Withdrawal was at patient’s request  in 15.9% of the cases. Eleven patients (2.7%) died  of
treatment emergent adverse events (TEAEs) while on study; none of the TEAEs leading to death were
considered related to rigosertib. Using the Medical dictionary for Regulatory Activities (MedDRA)
terminology, the most frequently reported drug-related TEAEs were  in system  organ class (SOC)
categories of gastrointestinal (GI) disorders (28.0%) and general disorders and administration site
conditions (20.0%). Individual TEAEs reported by at least 5% of  patients across SOC categories
included, by decreasing order of frequency, nausea  (14.9%), fatigue (13.4%), diarrhoea (11.5%),
constipation (7.8%), decreased appetite  (5.6%), and vomiting (5.4%). The most frequently
reported (cid:2) Grade 3 drug-related TEAEs were in the SOC categories of blood and lymphatic system
disorders (7.8%) and Investigations (6.1%). Individual TEAEs reported  by at least 1% of patients
across SOC categories were anemia (4.1%); neutrophil count decreased  and platelet count decreased
(3.2% each); neutropenia and thrombocytopenia (2.2% each);  hyponatraemia (2.0%); white blood cell

count decreased (1.7%); febrile neutropenia (1.5%); fatigue (1.2%); and diarrhoea, delirium, and

haematuria (1.0% each). Among the 10.0%  of  patients whose serious adverse events (SAEs) were

considered drug-related, the two most frequent events  were  febrile neutropenia and delirium (1.2% of

patients each). Other drug-related SAEs included hyponatraemia, confusional state, and mental status

changes (0.7% each); fatigue, dehydration, dizziness, haematuria, pollakiuria, and dyspnoea (0.5%

each); and anaemia, diabetes insipidus, abdominal distension, gastrointestinal  haemorrhage,

retroperitoneal fibrosis, asthenia, malaise, pyrexia, cholecystitis, bronchitis, lung infection,  pneumonia,

sepsis, septic shock, sinusitis fungal, urinary tract infection, muscular weakness, convulsion, headache,

dysuria, renal failure, renal failure acute, pulmonary alveolar haemorrhage, and respiratory distress

(0.2% each). Diabetes insipidus was reported as a new suspected unexpected serious adverse reaction.

Three patients (0.7%), all enrolled in a Phase 1 dose-escalating study, experienced dose-limiting

toxicities (DLTs), defined as drug-related TEAEs that occurred during the first cycle of rigosertib

administration. DLTs included pneumonia, dysuria, and dyspnoea  (1 patient, 0.2%, each).

Rigosertib oral in combination with azacitidine for MDS and AML

We are currently enrolling patients in the Phase 2 portion of  a  Phase 1/2 clinical trial testing oral

rigosertib in combination with azacitidine for patients with MDS and AML. In December 2014, we

presented results from the Phase 1 portion  of this trial at the Annual  ASH Meeting. A total of

18 patients with MDS or non-proliferative AML, who were either previously untreated with

hypomethylating agents, or who had failed or progressed on an HMA, were enrolled. The indicated

dose of azacitidine (75 mg/m2/day) was given in combination with escalating doses of oral rigosertib in

three successive cohorts (140-560 mg given two times daily). Oral rigosertib was  administered from day

one through day 21 of a 28-day cycle. Azacitidine was administered for seven days starting on day eight

of the 28-day cycle. Nine patients with MDS, eight patients with AML and one patient with chronic

myelomonocytic leukemia, or CMML, received the combination. Responses according to International

Working Group criteria were observed. Marrow complete remission was achieved in five patients

(2 AML; 3 MDS). Complete remission with  incomplete recovery  of blood counts was observed in four

patients (1 AML; 3 MDS), and stable disease was observed in two patients (1  MDS; 1  CMML).

Measures of hematological improvement, including increases in platelet (1 AML; 2 MDS patients),

erythroid (2 MDS patients) and neutrophil (2 MDS patients) counts were observed with the

combination. Notably, two MDS patients who responded to the combination of rigosertib and

azacitidine had previously failed treatment with a hypomethylating  agent administered as a single agent.

The most frequently reported adverse events in cycle 1 included constipation, diarrhea, nausea, fatigue,

hypotension, and pneumonia. The adverse events did not differ significantly among the three dosing

cohorts. The only adverse events of Grade 3 or greater that occurred in more than one patient were

pneumonia (4), neutropenia, (3), febrile neutropenia (2) and thrombocytopenia (2). Elevation in

creatinine in one patient in the first cohort  was deemed as a possible treatment-related  Grade 3

dose-limiting toxicity that required subsequent expansion of the cohort. Overall, the adverse event

profile did not appear to differ significantly from that reported for azacitidine alone.

The combination dosing schedule of oral rigosertib in the final cohort (two  doses per day; 560mg

in the morning and 280 mg in the afternoon) given with the indicated dose of azacitidine  was well

tolerated and selected for the Phase 2 portion of the trial, which  is now underway in multiple centers.

The Phase 2 portion of the trial has been designed to assess whether treatment with rigosertib, in

combination with azacitidine, has a beneficial effect on bone marrow function and bone marrow

peripheral blood counts and symptoms of disease progression in patients with MDS  and AML. Patient

enrollment in the Phase 2 portion of this trial  is projected to be completed in the second quarter of

this year. We plan to present interim Phase 2 data from this trial at  a  scientific conference in the

second quarter of 2015.

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Rigosertib oral for lower-risk MDS

Unlike higher-risk MDS patients who suffer from a shortfall in normal blood cells, or cytopenias,

as well as elevated levels of cancer cells, or blasts in their bone marrow and  bloodstream, lower-risk
MDS patients suffer only from cytopenias, that  is low levels of red blood cells, white blood cells or
platelets. Thus, lower-risk MDS patients depend on  transfusions and growth factors or other therapies
to improve their low blood counts.

In December 2013, we presented data at the Annual ASH Meeting from our Phase 2 trial with an

oral formulation of rigosertib in lower-risk MDS patients. Phase 2 clinical  data showed encouraging
efficacy of single agent oral rigosertib (560 mg AM/560 mg PM) in  transfusion-dependent, lower-risk
MDS patients. Rigosertib was generally well tolerated, except for treatment-related urinary side effects
seen at the 560 mg AM/560 mg PM  dose. In an attempt to  ameliorate the drug-related side effects, the
dosing of oral rigosertib was changed to 560 mg AM/280 mg PM. This  modified dosing and schedule
has been tested in more than 50 patients in Phase 2 trials of lower-risk MDS. These studies indicate
that modified dosing of oral rigosertib was well tolerated without significant urinary side effects. The
reduced dosing also affected efficacy, necessitating  additional pharmacokinetic and pharmacodynamics
studies, which are now being planned. The nature of these  studies is now being discussed with the study
investigators and experts.

Data presented at ASH in December 2013  also revealed the potential of a genomic methylation

assessment as a tool to potentially identify patients likely to respond to oral rigosertib. We have
extended a Phase 2 clinical trial to add an additional cohort of 20 patients to aid in the development of
this genomic methylation test. We are collaborating with  a methylation genomics company to refine the
test. We expect to present or publish these findings this year. A second approach, aimed at patient
selection and for the understanding of  the mechanisms underlying the activity of rigosertib in lower-risk
MDS, involves a patient-derived bone marrow  cell  culture system and has been developed by our
collaborators at Columbia University Medical Center. Initial results  from these in vitro studies will  be
presented at the American Association for  Cancer Research conference in April 2015.

On January 27, 2015, Baxter, our European collaboration partner for rigosertib in response to our

delivery of a notice and materials relating to one of our Phase 2 clinical trials in lower-risk MDS,
notified us that it has elected not to  pursue additional clinical trials  or the submission  of a drug
approval application for oral rigosertib in  lower risk-MDS patients. The decision by Baxter does not
alter the terms of our collaboration agreement. We have the  right to continue the development of oral
rigosertib in this indication on our own, and Baxter  has the right to commercialize oral rigosertib for
lower-risk MDS indications in its territory, subject to its ongoing compliance with the agreement,
including payment of applicable milestones.

We have conducted clinical trials and pre-clinical tests of rigosertib for the treatment of other
cancers, including pancreatic cancer, head and neck cancers and other refractory cancers. At this time,
we are focusing our development efforts with rigosertib to MDS and  AML. We do, however, continue
to expend resources and incur costs relating to legacy trials and tests for these  indications.

Safety and Tolerability of rigosertib oral in MDS and other hematologic malignancies

More than 200 patients have been enrolled in one of four Phase 1 and 2  studies of oral rigosertib

as monotherapy in MDS and other hematologic malignancies. One study  is completed and a CSR is
available. The three other studies are ongoing; thus final data are subject to change. The main reasons
for study discontinuation were Investigator’s  decision (25.0%) and PD  per  the 2006 IWG criteria
(24.0%). The occurrence of AEs led to withdrawal  of  17.7% of patients. Patients requested withdrawal
in 13.5% of the cases. Five patients (5.2%) died of TEAEs while on  study: none of  the deaths were
considered drug-related. The majority of patients (69.7%) experienced TEAEs that were considered
drug-related. The most frequently reported drug-related TEAEs  were in the SOC  category of renal and

urinary disorders (49.2% of patients); and 23.0% of patients experienced drug-related gastrointestinal

disorders. Individual TEAEs reported by at least 5% of patients across SOC categories included, by

decreasing order of frequency, pollakiuria  (25.4%), dysuria (23.8%), haematuria (18.0%), urinary tract

pain (16.4%), micturition urgency (14.8%), diarrhoea (11.5%), fatigue (10.7%), decreased appetite

(9.0%), nausea (9.0%), urinary tract infection (8.2%), and cystitis (7.4%). Drug-related TEAEs

were (cid:2) Grade 3 in 21.3% of the patients. The most frequently reported (cid:2) Grade 3 drug-related

TEAEs were infections and infestations (6.6%), investigations (6.6%), and blood and lymphatic system

disorders (5.7%). Individual TEAEs reported by at least 1% of patients included cystitis (4.1%);

neutrophil count decreased and haematuria (3.3% each); neutropenia and urinary tract infection (2.5%

each); and thrombocytopenia, platelet count decreased, hyponatraemia, dysuria, urinary tract pain, and

dyspnoea (1.6% each). Among the 8.2% of patients whose SAEs were considered drug-related, the

events were mostly urinary. Drug-related SAEs included cystitis (4.1%), urinary tract infection and

haematuria (1.6% each); and anaemia, dysuria,  micturition urgency, urinary tract pain, and dyspnoea

(0.8% each). During Phase 1 studies, six patients (4.9%) experienced 11 DLTs, which were defined as

drug-related TEAEs that occurred during the first cycle of rigosertib administration. These included

neutropenia, pain, cystitis, alanine transaminase/aminotransferase increase,  aspartate transaminase/

aminotransferase increase, hypoalbuminaemia, hypocalcaemia, hyponatraemia, haematuria, dyspnoea,

and haematoma.

Briciclib

Our second clinical-stage product candidate is briciclib, a small molecule targeting an important

intracellular regulatory protein, cyclin D1, which is often found at elevated levels in cancer cells.

Cyclin D1 expression is regulated through a process termed cap-dependent  translation, which requires

the function of eukaryotic initiation factor 4E, or eIF4E,  protein. In vitro evidence indicates briciclib

binds to eIF4E, blocking cap-dependent translation of  Cyclin D1 and other cancer proteins, such as

c-MYC and VEGF, leading to tumor cell death. We are conducting a Phase 1 multisite dose-escalation

trial of briciclib in patients with advanced solid tumors refractory to current therapies. Upon

completion of the dose-escalation portion of the ongoing Phase 1 trial we will assess potential further

development for briciclib.

Recilisib

Our third clinical-stage product candidate, recilisib, has been developed in collaboration with the

U.S. Department of Defense for acute radiation syndromes. We have conducted animal studies and

clinical trials of recilisib under the FDA’s Animal Efficacy Rule, which permits marketing approval for

new medical countermeasures for which human efficacy  studies are not feasible or ethical, by relying on

evidence from animal studies in appropriate animal models to support efficacy in humans. We have

completed four Phase 1 trials to evaluate the safety and pharmacokinetics  of recilisib in healthy human

adult subjects using both subcutaneous and oral formulations. Ongoing studies  of recilisib are being

conducted by third party collaborators with government funding, and we anticipate that  any future

development of recilisib beyond our ongoing studies would be conducted solely with government

funding or in collaborations.

Preclinical Product Candidates

In addition to our three clinical-stage product candidates,  we  have several product candidates that

target kinases, cellular metabolism or  cell  division in preclinical development. We may  utilize

collaborations to further the development of these product candidates  as we focus internally on our

more advanced programs.

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Research and Development

Since commencing operations, we have dedicated a significant portion of  our resources to the
development of our clinical-stage product candidates, particularly rigosertib. We incurred research and
development expenses of $49.4 million, $50.2 million, and $52.8 million during the years ended
December 31, 2014, 2013, and 2012, respectively. We anticipate  that a significant portion of our
operating expenses will continue to be related to research and development.

Collaborations

Baxter Healthcare SA

In September 2012, we entered into a development and license agreement with a subsidiary of
Baxter International Inc., Baxter Healthcare SA, or Baxter,  granting Baxter an exclusive, royalty-bearing
license for the research, development, commercialization and manufacture (in  specified instances) of
rigosertib in all therapeutic indications in  Europe. Under  the Baxter  agreement, we are obligated to use
commercially reasonable efforts, in accordance with a development plan agreed upon by the parties, to
direct, coordinate and manage the development of rigosertib for certain specified indications. In
addition, the agreement provides a mechanism to expand the scope of the collaboration  for additional
indications. Collaboration and development under  our agreement with Baxter is guided by a joint
steering committee.

The initial indications specified in our agreement with Baxter are treatment of MDS with

rigosertib IV, treatment of MDS with rigosertib oral, and treatment of pancreatic cancer. Treatment of
MDS or AML with rigosertib oral in  combination with azacitidine could be added as an additional
indication in the future. The parties jointly  determined not to pursue the pancreatic  cancer indication
after a December 2013 interim futility and safety  analysis and, on  January 27, 2015, Baxter  notified us
that it elected not to pursue additional clinical trials,  or the submission of a  drug approval application,
for rigosertib oral in lower risk MDS patients. The decision by Baxter does not alter the terms of our
agreement. We have the right to continue  the development of oral rigosertib in this indication on our
own, and Baxter has the right to commercialize oral rigosertib for lower-risk MDS indications in its
territory, subject to its ongoing compliance with the agreement, including payment of applicable
milestones.

Under the terms of the agreement, Baxter made an upfront payment to us of $50.0 million, and
we are eligible to receive pre-commercial milestone payments if specified development and regulatory
milestones are achieved. The potential pre-commercial development milestone payments to the
Company include $25,000,000 for each  drug approval application filed for indications specified in the
agreement, and up to $100,000,000 for marketing approval for each of the specified MDS indications.
We can elect to have Baxter fund half  of the costs of planned new Phase 3 clinical trial of rigosertib IV
in higher-risk MDS patients, up to $15.0 million. If we do so elect, then the approval milestone for
higher-risk MDS will be reduced by $15.0 million.

In addition to these pre-commercial milestones, we are  eligible to receive up to an aggregate of
$250.0 million in milestone payments based on Baxter’s achievement of pre-specified threshold levels of
annual net sales of rigosertib. We are also entitled to receive royalties at percentage rates ranging from
the low-teens to the low-twenties on net sales of rigosertib  by Baxter in  the licensed territory, and these
royalty rates may be reduced depending on when we receive marketing approval for the use of
rigosertib IV for MDS from the EMA or specified European  Union countries, and whether or not a
competing product for refractory MDS has been approved  within a specified period after our receipt of
approval for rigosertib IV for MDS.

Under the agreement, Baxter is obligated to pay  us  royalties, on  a country-by-country basis in the

licensed territory, until the later of the expiration  of all valid claims of  the  patent rights licensed to

Baxter that cover the manufacture, use, sale or importation  of  rigosertib in such country, and the

expiration of regulatory-based exclusivity for rigosertib in such country. If the patent rights and

regulatory-based exclusivity expire in a particular  country before a specified period of time after first

commercial sale of rigosertib in that country, Baxter will pay us royalties at a reduced rate until the

end of the specified period.

The agreement with Baxter will remain in effect until the expiration of all applicable royalty  terms

and satisfaction of all payment obligations in  each licensed country,  unless terminated earlier due to the

uncured material breach or bankruptcy of a party, force majeure, or in the event of a specified

commercial failure. We may terminate the agreement in the event that  Baxter brings a challenge

against us in relation to the licensed patents. Baxter may terminate the agreement without cause upon

180 days’ prior written notice.

In July 2012, Baxter purchased $50.0 million of our Series J convertible preferred stock, which

converted to shares of our common stock  immediately prior to the consummation of our initial public

offering in July 2013 and invested an additional $5.0 million in our initial public offering.

SymBio Pharmaceuticals Limited

In July 2011, we entered into a license agreement with SymBio Pharmaceuticals Limited, or

SymBio, as subsequently amended, granting SymBio an exclusive, royalty-bearing license for the

development and commercialization of rigosertib in Japan and Korea. Under the SymBio license

agreement, SymBio is obligated to use commercially reasonable efforts to develop and obtain market

approval for rigosertib inside the licensed territory and  we  have similar obligations  outside of the

licensed territory. In January 2015, SymBio completed enrollment in a Phase 1 clinical  trial testing

rigosertib IV (SyB L-1101) for refractory/relapsed higher-risk MDS patients. SymBio is also evaluating

rigosertib oral (SyB C-1101) in an ongoing domestic Phase 1 clinical trial for patients with higher-risk

MDS. We have also entered into an agreement  with SymBio to supply  them with development-stage

product. Under the SymBio license agreement we also agreed to supply commercial product to SymBio

under specified terms that will be included in a commercial supply agreement to be negotiated prior to

the first commercial sale of rigosertib. We have also granted SymBio a right of first negotiation to

license or obtain the rights to develop and commercialize compounds having a chemical structure

similar to rigosertib in the licensed territory.

Under the terms of the SymBio license agreement, we received an upfront payment of

$7.5 million. We are eligible to receive milestone payments of up to an aggregate of $22.0 million from

SymBio upon the achievement of specified development and regulatory milestones for specified

indications. Of the regulatory milestones, $5.0 million  is due  upon receipt  of marketing approval in the

United States of rigosertib IV in higher-risk MDS patients,  $3.0 million is due upon receipt of

marketing approval in Japan for rigosertib IV in higher-risk MDS patients, $5.0 million is due upon

receipt of marketing approval in the United States for rigosertib oral in lower-risk MDS patients and

$5.0 million is due upon receipt of marketing approval in Japan  for rigosertib oral in lower-risk MDS

patients. Furthermore, upon receipt of marketing approval in the United  States and Japan for  an

additional specified indication of rigosertib, which we are currently not pursuing, an aggregate of

$4.0 million would be due. In addition to these pre-commercial milestones, we are eligible to receive

tiered milestone payments of up to an aggregate of $30.0 million based upon annual net sales of

rigosertib by SymBio in the licensed territory. Further, under the terms of the SymBio license

agreement, SymBio is obligated to make royalty payments to us at percentage  rates ranging from the

mid-teens to 20% based on net sales, if any, of rigosertib by  SymBio in the licensed territory.

Royalties will be payable under the SymBio agreement on a country-by-country  basis in the

licensed territory, until the later of the expiration of marketing exclusivity in those countries, a specified

period of time after first commercial sale of rigosertib in such country, or the  expiration of all valid

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claims of the licensed patents covering rigosertib or the manufacture or use of rigosertib in such
country. If no valid claim exists covering the composition of matter of rigosertib  or the use of or
treatment with rigosertib in a particular country before the expiration of the royalty term, and specified
competing products achieve a specified market share percentage in  such country, SymBio’s obligation to
pay us royalties will continue at a reduced royalty rate until the  end  of the royalty term. In addition,
the applicable royalties payable to us may be reduced if SymBio is required to pay royalties to third
parties for licenses to intellectual property rights necessary to develop, use,  manufacture or
commercialize rigosertib in the licensed territory.

The license agreement with SymBio will remain in  effect until the expiration of the royalty term.

However, the SymBio license agreement may be terminated  earlier due to the uncured material breach
or bankruptcy of a party, or force majeure. If SymBio terminates the  license agreement in these
circumstances, its licenses to rigosertib  will survive, subject to SymBio’s milestone and royalty
obligations, which SymBio may elect  to  defer and offset against any damages that may be determined
to be due from us. In addition, we may  terminate the license agreement in  the event that SymBio
brings a challenge against us in relation to the licensed patents, and SymBio may terminate the license
agreement without cause by providing us  with written notice a  specified period of time in advance of
termination.

The Leukemia and Lymphoma Society

investment.

In May 2010, we entered into a funding agreement with The Leukemia and Lymphoma Society, or
LLS, to fund the development of rigosertib. Under the LLS funding agreement, we are obligated to use
the funding received exclusively for the payment or reimbursement of the costs and expenses for
clinical development activities for rigosertib. Under this agreement, we retain ownership and  control  of
all intellectual property pertaining to works of authorship, inventions, know-how, information, data and
proprietary material.

Under the LLS funding agreement, as amended, we  received funding  of $8.0 million from LLS

through 2012. We did not receive any funding from LLS in 2013 and we terminated the funding
agreement effective as of March 2013. We are required to make specified payments to LLS, including
payments payable upon execution of the first out-license; first approval for marketing by a regulatory
body; completion of the first commercial sale of rigosertib; and achieving  specified annual net sales
levels of rigosertib. The extent of these payments and our obligations will depend on whether we
out-license rights to develop or commercialize  rigosertib  to a third party, we commercialize rigosertib
on our own or we combine with or are sold to another company. In addition, we will pay to LLS a
single-digit percentage royalty of our net sales of rigosertib, if  any. Following a $1.0 million repayment,
which occurred in October 2012, the sum of our payments to LLS is capped at $23.0 million.

Preclinical Collaboration

In December 2012, we agreed to form GBO,  LLC, or GBO, a joint venture entity owned by us
and GVK Biosciences Private Limited, or GVK BIO, to collaborate on the  development of two of our
preclinical programs through filing of an  IND and/or conducting proof of concept studies using our
technology platform. GVK BIO has operational control of GBO  and we have strategic and scientific
control. During 2013, GVK BIO made an initial  capital contribution of $500,000 in exchange for a 10%
interest in GBO, and we contributed a sub-license to the  intellectual  property  related to the two
programs in exchange for a 90% interest. In November  2014, GVK BIO made  a second capital
contribution of $500,000 which increased its interest in GBO to 17.5% (which decreased our interest to
82.5%). GVK BIO will be required to make additional capital contributions over time, subject to
specified conditions, and its interest in GBO will increase to as much as  50%. At specified times, we
will be entitled to buy back from GVK BIO the rights to either of  these two programs. In addition,
upon the occurrence of certain events namely termination of our participation in  the programs  either
with or without a change in control, GVK Bio will be entitled to purchase or obtain our interest in
GBO.

Intellectual Property

Patents and Proprietary Rights

Medicine, or Mount Sinai.

License Agreement with Temple University

Our intellectual property is derived through our internal research, licensing agreements with

Temple University, or Temple, and licensing research agreements with the Mount Sinai School of

In January 1999, we entered into a license agreement with Temple as subsequently amended,  to

obtain an exclusive, world-wide license to certain Temple patents and technical information to make,

have made, use, sell, offer for sale and import several classes  of novel compounds, including our three

clinical-stage product candidates, rigosertib,  briciclib and recilisib.

Under the terms of the license agreement, we paid Temple a non-refundable up-front payment,

and are required to pay annual license  maintenance fees, as well as a low  single-digit percentage of net

sales as a royalty. In addition, we agreed to pay Temple  25% of any consideration received from any

sublicensee of the licensed Temple patents and technical information, which does not include any

royalties on sales, funds received for research and development or proceeds from any equity or debt

The license agreement with Temple can  be  terminated by mutual agreement or due to the material

breach or bankruptcy of either party. We may terminate the license agreement for any reason by giving

Temple prior written notice.

Research Agreement with Mount Sinai School of Medicine

In May 2010, we entered into a research agreement with Mount Sinai. This agreement is described

in more detail under the caption ‘‘Certain Relationships and Related Party Transactions—Research

Agreement.’’

Rigosertib Patents

Briciclib Patents

Recilisib Patents

As of March 2015, we owned or exclusively licensed  75 issued patents and 11 pending patent

applications covering composition-of-matter,  process, formulation and various indications for

method-of-use for rigosertib filed worldwide, including  seven patents and two patent applications in the

United States. The U.S. composition-of-matter patent for rigosertib, which we in-licensed pursuant to

the license agreement with Temple, currently expires  in 2026. The U.S. method of treatment patent for

rigosertib, which we also in-licensed from Temple, expires in 2025.

As of March 2015, we owned or exclusively licensed  13 issued patents and three pending patent

applications covering composition-of-matter,  process, formulation and various indications for

method-of-use for briciclib filed worldwide, including two patent in the United States. The U.S.

composition-of-matter patent for briciclib expires in 2025.

As of March 2015, we owned or exclusively licensed  57 issued patents and 31 pending patent

applications covering composition of matter, formulation and various indications for method-of-use for

recilisib filed worldwide, including four patents and five patent  applications in the United States. The

U.S. composition-of-matter patent for recilisib expires in 2020.

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General Considerations

As with other biotechnology and pharmaceutical companies, our ability to maintain and solidify a

proprietary position for our product candidates will depend upon  our success in obtaining  effective
patent claims and enforcing those claims once granted.

Our commercial success will depend in part upon not infringing upon the proprietary rights of
third parties. It is uncertain whether the issuance of any third-party  patent would require us to alter
our development or commercial strategies, or our product candidates  or processes, obtain licenses or
cease certain activities. The biotechnology and pharmaceutical  industries are characterized by extensive
litigation regarding patents and other intellectual property rights. If a third  party commences a patent
infringement action against us, or our collaborators, it could consume significant financial and
management resources, regardless of  the merit of the  claims or the outcome  of the litigation.

The term of a patent that covers an FDA-approved drug may be eligible for additional patent term

extension, which provides patent term restoration as compensation for the patent term lost during the
FDA regulatory review process. The Drug Price Competition and Patent Term Restoration Act of 1984,
or the Hatch-Waxman Act, permits a patent term extension of up to five years beyond the expiration of
the patent. The length of the patent term extension is related to the length of time the drug is under
regulatory review. Patent extension cannot extend the remaining term of a patent beyond a total of
14 years from the date of product approval  and only one patent  applicable to an approved drug may be
extended. Similar provisions are available in Europe and other foreign jurisdictions to extend the term
of a patent that covers an approved drug. In the future, if and when our pharmaceutical products
receive FDA approval, we expect to apply for patent term  extensions on patents covering those
products.

Furthermore, we may be able to obtain extension of patent  term by adjustment of the  said term
under the provisions of 35 U.S.C. § 154 if the issue of an original patent is delayed due to the failure
of the U.S. Patent and Trademark Office. For example,  we have received adjustments of 1,139  days
extension to the patent term for the rigosertib composition of matter  patent (US 7,598,232), 1,155 days
extension for the patent covering the process for  making rigosertib (US 8,143,453) and 751 days
extension for rigosertib formulation patent (US  8,063,109)  under the  provisions of 35 U.S.C. §154.

We have received orphan designation for rigosertib for the treatment of MDS in the US  and

Europe. Our partner SymBio has received similar designation in Japan.

In addition to patents, we rely upon unpatented trade secrets, know-how  and continuing
technological innovation to develop and maintain a competitive position. We seek to protect our
proprietary information, in part, through confidentiality agreements  with our employees, collaborators,
contractors and consultants, and invention assignment agreements with our employees. We also have
agreements requiring assignment of inventions with  selected  consultants and collaborators. The
confidentiality agreements are designed to protect  our proprietary information and, in the case of
agreements or clauses requiring invention assignment, to grant us  ownership  of technologies that are
developed through a relationship with a  third party.

Competition

The pharmaceutical industry is highly competitive and subject to rapid and significant technological

change. While we believe that our development experience and scientific  knowledge provide us with
competitive advantages, we face competition from both large  and small pharmaceutical and
biotechnology companies. There are a number of pharmaceutical companies, biotechnology companies,
public and private universities and research organizations actively engaged  in the research and
development of products that may compete with our products. Many  of  these companies are
multinational pharmaceutical or biotechnology organizations, which are pursuing the development of,

or are currently marketing, pharmaceuticals  that target the key oncology indications  or cellular

pathways on which we are focused.

It is probable that the increasing incidence and prevalence of cancer will  lead to many more

companies seeking to develop products and therapies for the treatment of unmet needs in oncology.

Many of our competitors have significantly greater financial, technical and human resources  than we

have. Many of our competitors also have a significant advantage with respect to experience in  the

discovery and development of product candidates, as well as obtaining FDA  and other regulatory

approvals of products and the commercialization of those products. We anticipate intense and

increasing competition as new drugs enter the market and as more advanced technologies become

available. Our success will be based in part on our ability to identify, develop and manage  a portfolio

of drugs that are safer and more effective than competing products in the treatment of cancer patients.

Myelodysplastic Syndromes

There are several ongoing clinical trials aimed at expanding the use of approved chemotherapeutic

and immunomodulatory agents in higher-risk MDS, as well as several new clinical programs testing

novel technologies in this area. Companies competing in this space include Eisai Inc. (decitabine),

Celgene Corporation (azacitidine in combination with lenalidomide,  Cell Therapeutics, Inc. (tosedostat

in combination with decitabine or cytarabine), Cyclacel Pharmaceuticals, Inc. (sapacitabine), Mirati

Therapeutics (mocetinostat in combination with azacitidine), and MEI Pharma (pacrinostat in

combination with azacitidine). To our knowledge, there  are no Phase 3 trials being conducted for

higher-risk MDS patients who have failed treatment with hypomethylating agents. In the lower-risk

MDS market, we face competition from a number of companies in mid-stage clinical trials, such as

Celgene Corporation (lenalidomide), Array BioPharma Inc (ARRY-614), and Acceleron Pharma

(sotatercept and luspatercept).

Acute Radiation Syndrome

Competitors developing products to address  ARS include Soligenix, Inc., Cellerant

Therapeutics, Inc., and Cleveland BioLabs, Inc. Each of these companies is working with  the U.S.

government to develop its products through federal contracts and grants.

Manufacturing

Our product candidates are synthetic small  molecules. Manufacturing  activities must comply  with

FDA current good manufacturing practices, or cGMP, regulations. We conduct our manufacturing

activities under individual purchase orders with third-party contract manufacturers, or CMOs. We have

in place quality agreements with our key CMOs. We  have also established an internal quality

management organization, which audits and qualifies CMOs in the United States and abroad.

We are working with CMOs to produce the rigosertib active pharmaceutical ingredient, which we

believe will enable us to launch and commercialize rigosertib IV if and when marketing approval is

obtained. Other CMOs produce rigosertib IV and rigosertib oral  for use in our clinical trials. We

believe that the manufacturing processes for the active pharmaceutical  ingredient and finished drug

products for rigosertib are being developed to adequately support future development and commercial

demands.

The FDA regulates and inspects equipment, facilities and  processes used  in manufacturing

pharmaceutical products prior to approval. If we fail to comply with applicable cGMP requirements

and conditions of product approval, the FDA may seek sanctions, including fines, civil penalties,

injunctions, suspension of manufacturing operations, operating restrictions, withdrawal of FDA

approval, seizure or recall of products and criminal prosecution. Although we periodically monitor the

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FDA compliance of our third-party CMOs, we cannot be certain  that our  present or future third-party
CMOs will consistently comply with cGMP and other applicable FDA regulatory requirements.

(cid:129) Submission of an NDA to the FDA;

Commercial Operations

We do not currently have an organization for the sales, marketing and distribution of
pharmaceutical products. We  may rely on licensing  and co-promotion agreements with strategic
partners for the commercialization of  our products in the  United States and other territories. If we
choose to build a commercial infrastructure to support  marketing  in the United States, such
commercial infrastructure could be expected to include a targeted, oncology sales force supported by
sales management, internal sales support,  an internal marketing group and distribution support. To
develop the appropriate commercial infrastructure internally, we would have to invest financial and
management resources, some of which would have to be deployed prior to any confirmation that
rigosertib will be approved.

Government Regulation

As a pharmaceutical company that operates in the United States, we are subject to extensive
regulation by the FDA, and other federal, state, and local  regulatory agencies. The Federal Food, Drug,
and Cosmetic Act, or the FDC Act, and its implementing regulations set forth, among other things,
requirements for the research, testing, development,  manufacture, quality  control, safety, effectiveness,
approval, labeling, storage, record keeping, reporting, distribution, import, export, advertising  and
promotion of our products. Although the  discussion below  focuses  on regulation in the United States,
we anticipate seeking approval for, and marketing of, our products  in other countries. Generally, our
activities in other countries will be subject to regulation that is similar in nature and  scope as that
imposed in the United States, although there can be important differences.  Additionally, some
significant aspects of regulation in Europe  are addressed  in a centralized  way through the EMA, but
country-specific regulation remains essential in many  respects. The process of obtaining regulatory
marketing approvals and the subsequent compliance with  appropriate federal, state, local and  foreign
statutes and regulations require the expenditure of substantial  time and  financial resources and may not
be successful.

United  States Government Regulation

The FDA is the main regulatory body that controls pharmaceuticals in the United States, and its
regulatory authority is based in the FDC Act. Pharmaceutical products  are also subject to other federal,
state and local statutes. A failure to comply  explicitly with any  requirements during the product
development, approval, or post-approval periods,  may lead to administrative or judicial sanctions. These
sanctions could include the imposition by the FDA or  an institutional  review board, or  IRB, of a hold
on clinical trials, refusal to approve pending marketing applications or supplements, withdrawal of
approval, warning letters, product recalls, product seizures, total or partial suspension of production or
distribution, injunctions, fines, civil penalties or criminal prosecution.

The steps required before a new drug may  be  marketed in the United States generally include:

(cid:129) Completion of preclinical laboratory tests, animal studies  and formulation studies in compliance

with the FDA’s GLP regulations;

(cid:129) Submission to the FDA of an IND to support human clinical testing;

(cid:129) Approval by an IRB at each clinical site before each  trial may be initiated;

(cid:129) Performance of adequate and well-controlled clinical trials in accordance with federal  regulations

and with current good clinical practices, or GCPs, to establish the safety and efficacy of  the
investigational drug product for each targeted indication;

(cid:129) Satisfactory completion of an FDA Advisory Committee review, if applicable;

(cid:129) Satisfactory completion of an FDA inspection of the manufacturing facilities at which the

investigational product is produced to assess compliance with cGMP, and to assure that the

facilities, methods and controls are adequate; and

(cid:129) FDA review and approval of the NDA.

Clinical Trials

An IND is a request for authorization from the  FDA to administer an  investigational drug product

to humans. This authorization is required before interstate shipping and administration of any new drug

product to humans that is not the subject of an approved NDA. A 30-day waiting period after the

submission of each IND is required prior to the commencement of clinical testing in humans. If the

FDA has neither commented on nor questioned the IND within this 30-day period, the clinical trial

proposed in the IND may begin. Clinical trials involve the administration of the investigational drug to

patients under the supervision of qualified investigators following GCPs, an international standard

meant to protect the rights and health of patients and to define the roles of clinical trial sponsors,

administrators and monitors. Clinical trials are conducted  under  protocols that detail the parameters to

be used in monitoring safety, and the efficacy  criteria to be evaluated. Each protocol  involving testing

on U.S. patients and subsequent protocol  amendments must be submitted to the FDA as part of the

IND. The informed written consent of each participating subject is required. The  clinical investigation

of an investigational drug is generally divided into three phases. Although the phases are usually

conducted sequentially, they may overlap or be combined. The three phases of  an investigation are as

follows:

(cid:129) Phase 1. Phase 1 includes the initial introduction of an investigation drug into humans. Phase 1

clinical trials may be conducted in patients with the target disease or condition  or healthy

volunteers. These studies are designed to evaluate the safety, metabolism, pharmacokinetics and

pharmacologic actions of the investigational drug in humans,  the side effects associated with

increasing doses, and if possible, to gain  early evidence on effectiveness. During Phase 1 clinical

trials, sufficient information about the investigational product’s pharmacokinetics and

pharmacological effects may be obtained to permit the design of Phase 2 clinical trials.  The total

number of participants included in Phase 1 clinical trials varies, but is  generally in the range of

20 to 80.

(cid:129) Phase 2. Phase 2 includes the controlled clinical trials conducted to evaluate the  effectiveness of

the investigational product for a particular indication(s) in patients with the disease or condition

under study, to determine dosage tolerance and optimal dosage, and to identify  possible adverse

side effects and safety risks associated with the drug. Phase 2 clinical trials are typically

well-controlled, closely monitored, and  conducted in a limited patient population, usually

involving no more than several hundred participants.

(cid:129) Phase 3. Phase 3 clinical trials are controlled clinical trials conducted in an expanded patient

population at geographically dispersed clinical trial sites. They are performed after preliminary

evidence suggesting effectiveness of the investigational product has been obtained, and are

intended to further evaluate dosage, clinical effectiveness  and safety, to establish the overall

benefit-risk relationship of the product, and to provide an adequate basis for product approval.

Phase 3 clinical trials usually involve  several hundred to several thousand participants. In most

cases, the FDA requires two adequate and well controlled Phase 3 clinical trials to demonstrate

the efficacy of the drug. A single Phase 3 trial  with other  confirmatory evidence may be

sufficient in rare instances where the study is a large multicenter trial demonstrating internal

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consistency and a statistically very persuasive finding of a clinically meaningful effect on
mortality, irreversible morbidity or prevention of a  disease with a potentially serious outcome
and confirmation of the result in a second  trial would be practically or ethically impossible.

The decision to terminate development of an investigational drug product may be made by either a
health authority body, such as the FDA or IRB/ethics committees, or by a company for various reasons.
The FDA may order the temporary, or permanent, discontinuation  of a clinical trial at any time, or
impose other sanctions, if it believes that the clinical trial either is not being conducted in accordance
with FDA requirements or presents an unacceptable risk to the clinical trial  patients. In  some cases,
clinical trials are overseen by an independent  group of qualified experts organized by the trial  sponsor,
or the clinical monitoring board. This group provides authorization for whether or not a trial may move
forward at designated check points. These decisions are based on the limited access to data from the
ongoing trial. The suspension or termination of development can occur during any  phase of clinical
trials if it is determined that the participants or patients are being exposed  to  an unacceptable health
risk. In addition, there are requirements for the registration of ongoing clinical trials of  drugs on public
registries and the disclosure of certain  information pertaining to the trials as well as clinical trial results
after completion.

A sponsor may be able to request a special protocol assessment, or  SPA,  the purpose of which is

to reach agreement with the FDA on the Phase 3 clinical trial protocol design and analysis that will
form the primary basis of an efficacy claim. A sponsor meeting the  regulatory criteria may make a
specific request for a SPA and provide information regarding the  design and size of the proposed
clinical trial. A SPA request must be made before the proposed trial begins, and all open issues must
be resolved before the trial begins. If a written agreement is reached, it will be documented and made
part of the record. The agreement will be binding on the  FDA and may  not  be changed by the  sponsor
or the FDA after the trial begins except with the written agreement of the sponsor and the FDA or if
the FDA determines that a substantial scientific issue  essential to determining the safety or efficacy  of
the product candidate was identified after the testing  began.  A SPA is not  binding if new circumstances
arise, and there is no guarantee that a study will ultimately be adequate  to  support an approval even if
the study is subject to a SPA. Having a SPA  agreement does not guarantee that a  product will receive
FDA approval.

Assuming successful completion of all required testing in accordance with all applicable regulatory
requirements, detailed investigational drug product information is submitted to the FDA in the form of
a NDA to request market approval for the product in specified indications.

New Drug Applications

In order to obtain approval to market a drug in the United States, a marketing application must

be submitted to the FDA that provides data establishing the safety  and effectiveness of  the drug
product for the proposed indication.  The application includes all relevant data available from pertinent
preclinical and clinical trials, including negative  or ambiguous results as  well as positive findings,
together with detailed information relating to the  product’s chemistry, manufacturing, controls and
proposed labeling, among other things. Data can  come from company-sponsored clinical trials intended
to test the safety and effectiveness of a product, or from a  number  of alternative sources,  including
studies initiated by investigators. To support marketing approval, the data submitted must be sufficient
in quality and quantity to establish the safety and effectiveness of the investigational  drug product to
the satisfaction of the FDA.

In most cases, the NDA must be accompanied  by a substantial user fee (currently exceeding
$1,958,000); there may be some instances in  which the  user fee is waived. The FDA will initially review
the NDA for completeness before it accepts the  NDA for  filing.  The FDA  has 60 days from its receipt
of an NDA to determine whether the application will be accepted for filing based on the  agency’s

threshold determination that it is sufficiently complete to permit substantive review.  After the NDA

submission is accepted for filing, the FDA  begins an in-depth review. The FDA  has agreed to certain

performance goals in the review of NDAs. Most such applications for standard review drug products

are reviewed within ten to twelve months. The  FDA can extend this review by three months to consider

certain late-submitted information or information intended to clarify information already provided in

the submission. The FDA reviews the  NDA to determine, among other things, whether the proposed

product is safe and effective for its intended use, and whether the product is being manufactured in

accordance with cGMP. The FDA may  refer applications for novel drug products which present difficult

questions of safety or efficacy to an advisory  committee, typically a panel that includes clinicians and

other experts, for review, evaluation and a recommendation as to whether the application should be

approved and under what conditions. The FDA is  not  bound by the recommendations of an advisory

committee, but it considers such recommendations carefully when  making decisions.

Before approving an NDA, the FDA will inspect the facilities at which the product is

manufactured. The FDA will not approve the product unless it determines that the manufacturing

processes and facilities are in compliance with cGMP requirements and adequate to assure consistent

production of the product within required  specifications. Additionally, before approving an NDA, the

FDA will typically inspect one or more clinical sites to assure compliance with GCP. After the FDA

evaluates the NDA and the manufacturing facilities, it issues either an approval letter or a complete

response letter. A complete response letter generally outlines the deficiencies in the submission and

may require substantial additional testing or information in order for the FDA to reconsider the

application. If, or when, those deficiencies have been addressed to the FDA’s satisfaction in a

resubmission of the NDA, the FDA will issue an approval letter. The FDA has committed to reviewing

such resubmissions in two or six months depending on the  type of information included.

Notwithstanding the submission of any  requested additional information, the FDA ultimately may

decide that the application does not satisfy  the regulatory criteria for approval.

An approval letter authorizes commercial marketing of the drug with specific prescribing

information for specific indications. As a condition  of NDA approval, the FDA may require a risk

evaluation and mitigation strategy, or REMS, to help  ensure that  the benefits of the drug outweigh the

potential risks. REMS can include medication guides, communication plans for healthcare

professionals, and elements to assure safe use, or ETASU. ETASU can include, but  are not limited to,

special training or certification for prescribing or dispensing, dispensing only under certain

circumstances, special monitoring, and the use of patient registries. The requirement for a REMS can

materially affect the potential market  and profitability of the drug. Moreover,  product approval  may

require substantial post-approval testing and surveillance to monitor the drug’s safety or efficacy. Once

granted, product approvals may be withdrawn if compliance with regulatory standards is not maintained

or problems are identified following initial marketing.

Changes to some of the conditions established in an approved application, including changes in

indications, labeling, or manufacturing processes or facilities, require submission  and FDA approval of

a new NDA or NDA supplement before the change  can be implemented. An NDA supplement for a

new indication typically requires clinical data similar to that in the  original application, and the FDA

uses the same procedures and actions in reviewing NDA  supplements  as it does in reviewing NDAs.

Advertising and Promotion

The FDA and other federal regulatory agencies closely regulate the marketing and promotion of

drugs through, among other things, standards and regulations for direct-to-consumer advertising,

communications regarding unapproved uses, industry-sponsored scientific and educational activities, and

promotional activities involving the Internet. A product cannot be commercially promoted before it is

approved. After approval, product promotion can include only  those claims relating to safety and

effectiveness that are consistent with  the labeling approved by the FDA. Healthcare providers are

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permitted to prescribe drugs for ‘‘off-label’’ uses—that is, uses not approved by the FDA and therefore
not described in the drug’s labeling—because the FDA does  not regulate the practice of medicine.
However, FDA regulations impose stringent restrictions  on manufacturers’ communications regarding
off-label uses. Broadly speaking, a manufacturer may not  promote  a drug for off-label use, but may
engage in non-promotional, balanced  communication regarding off-label use under specified conditions.
Failure to comply with applicable FDA requirements and restrictions in this area  may subject a
company to adverse publicity and enforcement action by the FDA, the  DOJ, or the Office of  the
Inspector General of HHS, as well as state authorities.  This could subject a company to a range of
penalties that could have a significant commercial impact,  including civil and criminal fines and
agreements that materially restrict the manner in which a  company promotes or distributes drug
products.

Post-Approval Regulations

After regulatory approval of a drug is obtained,  a company is required to comply  with a number of
post-approval requirements. For example, as a condition of approval of  an NDA, the FDA may require
post-marketing testing, including Phase 4 clinical  trials, and  surveillance to further assess and monitor
the product’s safety and effectiveness after commercialization. Regulatory  approval of oncology
products often requires that patients in clinical trials be followed  for long periods to determine the
overall survival benefit of the drug. In addition, as a holder of an approved NDA, a company would be
required to report adverse reactions and production problems to the FDA, to provide updated safety
and efficacy information, and to comply with requirements concerning advertising and promotional
labeling for any of its products. Also, quality control and manufacturing procedures must continue to
conform to cGMP after approval to assure and preserve the  long term  stability of the  drug or biological
product. The FDA periodically inspects manufacturing facilities to assess compliance with cGMP, which
imposes extensive procedural and substantive record keeping  requirements. In addition, changes to the
manufacturing process are strictly regulated, and,  depending on the significance of the  change, may
require  prior FDA approval before being implemented.  FDA regulations  also require investigation and
correction of any deviations from cGMP and impose reporting and documentation requirements upon a
company and any third-party manufacturers that a  company  may decide to use. Accordingly,
manufacturers must continue to expend time, money  and effort in the area  of production and quality
control to maintain compliance with cGMP and other aspects of regulatory compliance.

We rely, and expect to continue to rely, on third parties for the production of clinical and

commercial quantities of our product candidates. Future FDA  and state inspections may identify
compliance issues at our facilities or at  the facilities of our contract manufacturers that may disrupt
production or distribution, or require substantial resources to correct. In addition, discovery of
previously unknown problems with a product  or the failure to comply with applicable requirements may
result in restrictions on a product, manufacturer or holder of an approved  NDA, including withdrawal
or recall of the product from the market or  other  voluntary,  FDA-initiated or judicial action that  could
delay or prohibit further marketing.

Newly discovered or developed safety or effectiveness data may require changes to a  product’s
approved labeling, including the addition of new warnings and contraindications, and also may require
the implementation of other risk management measures.  Also, new government requirements, including
those resulting from new legislation, may be established,  or the FDA’s policies may change, which could
delay or prevent regulatory approval  of our products under development  or result in  additional
post-approval requirements.

FDA Animal Efficacy Rule for Approval of Medical Countermeasures

Marketing approval by the FDA for new medical countermeasures in situations for which  human
efficacy testing is not feasible or ethical,  such as  for ARS, is based  on the so-called ‘‘Animal Efficacy

Rule.’’ Under this rule, FDA can rely on the evidence  from animal studies to provide substantial

prediction of effectiveness of an agent in humans, when coupled with:

(cid:129) a reasonably well understood pathophysiological mechanism for the toxicity of the radiological or

nuclear substance and its amelioration or prevention by the agent;

(cid:129) protective effect is demonstrated in generally more than one animal species expected to react

with a response predictive for humans, and hence be a reliable indicator of  its effectiveness in

humans;

in humans.

(cid:129) animal study endpoint is clearly related to the desired benefit  in humans; and

(cid:129) data or information on the pharmacokinetics and pharmacodynamics of the product in animals

and humans is sufficiently well understood to allow selection of a dose predicted to be effective

The Hatch-Waxman Amendments to the FDC Act

Orange Book Listing

In seeking approval for a drug through an NDA, applicants are required to  list with the FDA  each

patent whose claims cover the applicant’s product or method of using the product. Upon approval of a

drug, each of the patents listed in the application for the drug is then published in the FDA’s Approved

Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book.

Drugs listed in the Orange Book can, in turn, be cited by potential generic competitors in support of

approval of an abbreviated new drug application, or ANDA or 505(b)(2) application. An ANDA

provides for marketing of a drug product that has the same active ingredients in the same strengths

and dosage form as the listed drug and has been shown through bioequivalence testing  to  be

therapeutically equivalent to the listed drug. Other than the requirement for bioequivalence testing,

ANDA applicants are not required to conduct, or submit results of, pre-clinical or clinical tests to prove

the safety or effectiveness of their drug product. Drugs approved in this way are commonly referred to

as ‘‘generic equivalents’’ to the listed drug, and  can often be substituted by pharmacists under

prescriptions written for the original listed drug.  505(b)(2) applications provide for marketing of a drug

product that may have the same active ingredients as the listed drug and contain the same full safety

and effectiveness data as an NDA, but at least some of the information comes from studies not

conducted by or for the applicant. The ANDA or 505(b)(2) applicant is required to certify to the FDA

concerning any patents listed for the approved product in the FDA’s Orange Book. Specifically,  the

applicant must certify that: (i) the required patent information has not been filed; (ii) the  listed patent

has expired; (iii) the listed patent has not expired, but will expire on a particular date and approval is

sought after patent expiration; or (iv) the listed patent is invalid or  will not be infringed by the new

product. The ANDA or 505(b)(2) applicant may also elect to submit a statement certifying that its

proposed label does not contain (or carves out) any language regarding the patented method-of-use

rather than certify to a listed method-of-use patent.  If the applicant  does not challenge the listed

patents, the ANDA or 505(b)(2) application will not be approved until all the listed patents claiming

the referenced product have expired.

A certification that the new product will not infringe the already approved product’s listed patents,

or that such patents are invalid, is called a Paragraph  IV certification. If the ANDA or 505(b)(2)

applicant has provided a Paragraph IV certification to the FDA,  the applicant must also send notice of

the Paragraph IV certification to the NDA and patent holders once the ANDA or 505(b)(2) application

has been accepted for filing by the FDA. The NDA and patent  holders  may then initiate a patent

infringement lawsuit in response to the notice of  the Paragraph IV certification. The filing of a patent

infringement lawsuit within 45 days of the receipt  of a Paragraph IV certification automatically prevents

the FDA from approving the ANDA or 505(b)(2)  application until the earlier of 30 months, expiration

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of the patent, settlement of the lawsuit, or a  decision in the infringement case that is favorable to the
ANDA or 505(b)(2) applicant.

The ANDA or 505(b)(2) application also will not be approved  until any applicable non-patent

exclusivity listed in the Orange Book for the referenced product has  expired.

Exclusivity

Upon NDA approval of a new chemical  entity, or NCE, which is a drug  that contains no active

moiety that has been approved by the FDA in any  other NDA, that drug receives five years of
marketing exclusivity during which the FDA cannot receive any ANDA seeking approval of a generic
version of that drug. Certain changes to a drug, such as the  addition  of a new  indication to the  package
insert, are associated with a three-year period of exclusivity during which the FDA cannot approve an
ANDA for a generic drug that includes the change.

An ANDA may be submitted one year before NCE exclusivity expires if a Paragraph IV

certification is filed. If there is no listed patent in the Orange  Book, there may not be a Paragraph IV
certification, and, thus, no ANDA may be filed before the expiration of the exclusivity period.

Patent Term Extension

After NDA approval, owners of relevant drug patents may apply  for  up to a five year patent
extension. The allowable patent term  extension is  calculated as half of the drug’s testing phase—the
time between IND application and NDA submission—and all  of  the review phase—the time between
NDA submission and approval up to a maximum of five years. The time can be shortened if the FDA
determines that the applicant did not pursue approval with due diligence. The  total  patent term after
the extension may not exceed 14 years.

The Foreign Corrupt Practices Act

The Foreign Corrupt Practices Act, or FCPA, prohibits any  U.S. individual or business  from
paying, offering, or authorizing payment or offering of anything of value, directly or indirectly, to any
foreign official, political party or candidate for the purpose of influencing any act or decision of  the
foreign entity in order to assist the individual or  business in  obtaining or retaining business. The FCPA
also obligates companies whose securities  are listed in the United States to comply with accounting
provisions requiring the company to maintain books and records that accurately  and fairly reflect all
transactions of the corporation, including international subsidiaries,  and to devise and maintain an
adequate system of internal accounting controls for international operations.

Europe and Other International Government Regulation

In addition to regulations in the United  States, we will be subject to a variety of regulations in

other jurisdictions governing, among other things,  clinical trials and any commercial sales  and
distribution of our products. Whether  or not we  obtain FDA approval for a product, we  must obtain
the requisite approvals from regulatory  authorities  in foreign countries prior to the commencement of
clinical trials or marketing of the product in  those countries. Some countries outside of the United
States have a similar process  that requires the submission of a clinical trial application, or CTA,  much
like the IND prior to the commencement of human  clinical trials. In  Europe, for example, a CTA must
be submitted to each country’s national health authority and  an  independent ethics committee, much
like the FDA and IRB, respectively. Once the CTA is approved in accordance with a country’s
requirements, clinical trial development  may proceed.

To obtain regulatory approval to commercialize a new drug under European Union regulatory

systems, we must submit a marketing authorization application, or MAA. The MAA is similar to the

NDA, with the exception of, among other things, country-specific document requirements.

For other countries outside of the European Union, such as countries in Eastern Europe, Latin

America or Asia, the requirements governing the conduct of  clinical trials,  product licensing,  pricing

and reimbursement vary from country to country. In all  cases, again, the clinical trials are conducted in

accordance with GCP and the applicable regulatory requirements and the ethical principles that have

their origin in the Declaration of Helsinki.

Compliance

During all phases of development (pre- and post-marketing), failure to comply with applicable

regulatory requirements may result in administrative or judicial sanctions. These sanctions could include

the FDA’s imposition of a clinical hold on trials, refusal to approve pending  applications, withdrawal of

an approval, warning letters, product recalls, product seizures, total or partial suspension of production

or distribution, product detention or refusal to permit the import or export of products, injunctions,

fines, civil penalties or criminal prosecution. Any agency or judicial enforcement action could have a

material adverse effect on us.

Other Special Regulatory Procedures

Orphan Drug Designation

The FDA may grant Orphan Drug Designation  to  drugs intended to treat a  rare disease  or

condition that affects fewer than 200,000 individuals in the United States, or, if the disease or condition

affects more than 200,000 individuals in the United States, there is no reasonable expectation that the

cost of developing and making the drug would be recovered from sales in the United States. In the

European Union, the EMA’s Committee for Orphan Medicinal Products, or COMP, grants Orphan

Drug Designation to promote the development of products that  are  intended for the diagnosis,

prevention or treatment of life-threatening or chronically debilitating conditions affecting not more  than

five in 10,000 persons in the European Union community. Additionally,  designation  is granted for

products intended for the diagnosis, prevention or treatment of a life- threatening, seriously debilitating

or serious and chronic condition and when, without incentives, it  is unlikely that sales of the drug in

the European Union would be sufficient to justify the necessary investment in developing the  drug.

In the United States, Orphan Drug Designation entitles a party to financial incentives, such as

opportunities for grant funding towards clinical trial costs,  tax credits for certain research and user fee

waivers under certain circumstances. In addition, if a product receives the first FDA approval for the

indication for which it has orphan designation, the  product is entitled to seven years of  market

exclusivity, which means the FDA may  not approve any other application for the same drug for the

same indication for a period of seven years, except in  limited circumstances, such as a showing of

clinical superiority over the product with orphan exclusivity.  Orphan drug exclusivity does not prevent

the FDA from approving a different drug for the same disease or condition, or the same drug for a

different disease or condition.

In the European Union, Orphan Drug Designation also entitles a party to financial  incentives such

as reduction of fees or fee waivers and ten years of market  exclusivity is granted following drug

approval. This period may be reduced to six years if the Orphan Drug Designation criteria  are no

longer met, including where it is shown that the product is sufficiently profitable not to justify

maintenance of market exclusivity.

Orphan drug designation must be requested before submission of an application  for marketing

approval. Orphan drug designation does not convey any advantage in, or shorten the duration of the

regulatory review and approval process.

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Priority Review (United States) and Accelerated Review (European Union)

Among the Affordable Care Act’s provisions of importance to the pharmaceutical industry are the

Based on results of one or more Phase 3 clinical trials submitted in an NDA, upon the request of

an applicant, a priority review designation may be granted to a product by the FDA, which sets the
target date for FDA action on the application  at six months from FDA filing, or eight months from the
sponsor’s submission. Priority review is given where preliminary estimates indicate that a product, if
approved, has the potential to provide a  safe and effective therapy where no satisfactory alternative
therapy exists, or a significant improvement compared to marketed products is possible. If  criteria are
not met for priority review, the standard FDA review period is ten months  from FDA filing, or
12 months from sponsor submission. Priority review designation does not change the scientific/medical
standard for approval or the quality of evidence necessary  to support approval.

Under the Centralized Procedure in the European Union, the maximum timeframe for the

evaluation of a marketing authorization application is 210 days (excluding clock stops, when additional
written or oral information is to be provided by the applicant in response to questions asked by the
CHMP). Accelerated evaluation might be granted by the CHMP in exceptional cases, when a medicinal
product is expected to be of a major public health interest, defined by three cumulative criteria: the
seriousness of the disease (e.g., heavy  disabling or life-threatening diseases) to be treated; the absence
or insufficiency of an appropriate alternative therapeutic approach; and  anticipation of  high therapeutic
benefit. In this circumstance, EMA ensures  that the opinion of the CHMP is given within 150 days.

Pediatric Information

Under the Pediatric Research Equity Act, or PREA, NDAs or supplements to NDAs must contain

data to assess the safety and effectiveness of the drug for the claimed  indications in all relevant
pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for
which the drug is safe and effective. The FDA may grant full  or partial waivers, or deferrals, for
submission of data. Unless otherwise required by regulation,  PREA does not apply to any drug for an
indication for which orphan designation has been  granted.

The Best Pharmaceuticals for Children Act, or BPCA, provides  NDA holders a six-month

extension of any exclusivity—patent or non-patent—for a drug if certain conditions are met. Conditions
for exclusivity include the FDA’s determination that  information  relating to the use of a  new drug in
the pediatric population may produce  health  benefits in  that population, the FDA making a written
request for pediatric studies, and the applicant agreeing to perform, and reporting on, the requested
studies within the statutory timeframe. Applications under the  BPCA receive  priority review
designation, with all of the benefits that designation confers.

Healthcare Reform

In March 2010, the President of the United States signed into law the Patient Protection and
Affordable Care Act, which we refer to collectively as the  Affordable Care Act. The Affordable Care
Act substantially changes the way healthcare will be financed by both governmental and private
insurers, and significantly impacts the pharmaceutical industry.  The Affordable Care Act is a sweeping
law intended to broaden access to health insurance, reduce or  constrain the growth of healthcare
spending, enhance remedies against fraud and abuse, add  new transparency requirements for healthcare
and health insurance industries, impose new taxes  and fees on the health industry and impose
additional health policy reforms.

following:

(cid:129) an annual, nondeductible fee on any entity that manufactures or imports  specified branded

prescription drugs and biologic agents apportioned among these entities according to their

market share in some government healthcare programs;

(cid:129) an increase in the statutory minimum rebates a manufacturer must pay under the Medicaid

Drug Rebate Program, retroactive to January 1, 2010, to 23% and 13% of the average

manufacturer price for most branded  and generic drugs, respectively;

(cid:129) expansion of healthcare fraud and abuse laws, including the False Claims Act and the

Anti-Kickback Statute, new government investigative powers, and enhanced penalties for

noncompliance;

(cid:129) a new Medicare Part D coverage gap discount program, in which manufacturers must  agree to

offer 50% point-of-sale discounts off negotiated  prices of applicable brand drugs to eligible

beneficiaries during their coverage gap period, as a condition for  the manufacturers’ outpatient

drugs to be covered under Medicare Part D;

(cid:129) extension of manufacturers’ Medicaid rebate liability to covered drugs dispensed to individuals

who are enrolled in Medicaid managed care organizations;

(cid:129) expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to

offer Medicaid coverage to additional individuals and by adding new mandatory eligibility

categories for individuals with income at or below 133% of the Federal Poverty Level, thereby

potentially increasing manufacturers’ Medicaid rebate liability;

(cid:129) expansion of the entities eligible for discounts under the Public Health Service pharmaceutical

pricing program;

(cid:129) new requirements to report annually specified financial arrangements with physicians and

teaching hospitals, as defined in the Affordable Care  Act and its implementing regulations,

including reporting any ‘‘payments or transfers of value’’ made or distributed to prescribers,

teaching hospitals, and other healthcare providers  and reporting any ownership and investment

interests held by physicians and other healthcare providers and their immediate family  members

and applicable group purchasing organizations during the  preceding calendar year, with data

collection required beginning August 1, 2013 and reporting to the Centers  for Medicare and

Medicaid Services required by March 31, 2014 and by the 90th day of each subsequent calendar

year;

to physicians;

Department).

(cid:129) a new requirement to annually report drug samples that manufacturers and distributors provide

(cid:129) a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and

conduct comparative clinical effectiveness research, along with funding for such research; and

(cid:129) a mandatory nondeductible payment for employers with 50  or more full time employees (or

equivalents) who fail to provide certain minimum health insurance coverage for such employees

and their dependents, beginning in 2015 (pursuant to relief enacted by the Treasury

The Affordable Care Act also establishes an Independent Payment Advisory Board, or IPAB, to

reduce the per capita rate of growth in Medicare spending. Beginning in  2014, IPAB was  mandated to

propose changes in Medicare payments if it determines that the rate of growth of Medicare

expenditures exceeds target growth rates. The IPAB has broad discretion to propose policies to reduce

expenditures, which may have a negative impact on payment rates for pharmaceutical products.

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A proposal made by the IPAB is required to be implemented by  the U.S. government’s Centers for
Medicare & Medicaid Services unless Congress adopts a proposal with savings greater than those
proposed by the IPAB. IPAB proposals may impact payments for physician and free-standing services
beginning in 2015 and for hospital services beginning in 2020.

In addition, other legislative changes have been proposed and adopted since the Affordable Care

Act was enacted. On August 2, 2011, the  President signed into law the Budget Control Act of 2011,
which, among other things, created the Joint Select Committee  on Deficit Reduction to recommend
proposals in spending reductions to Congress. The Joint Select Committee did not achieve its targeted
deficit reduction of at least $1.2 trillion for the years 2013 through  2021, triggering the legislation’s
automatic reductions to several government programs. These reductions include aggregate reductions to
Medicare payments to providers of up to 2% per fiscal year, starting in  2013. On January 2, 2013,
President Obama signed into law the American  Taxpayer Relief Act of 2012, which, among other
things, reduced Medicare payments to several providers and increased the statute of limitations period
for the government to recover overpayments to providers from three  to  five years. These  new laws may
result in additional reductions in Medicare and other healthcare funding, which  could  have a material
adverse effect on our customers and accordingly, our financial operations.

We anticipate that the Affordable Care Act  will result in additional downward pressure on
coverage and the price that we receive for any approved product, and could seriously harm our
business. Any reduction in reimbursement from Medicare and other government programs may result
in a similar reduction in payments from private payors. The implementation  of cost containment
measures or other healthcare reforms may prevent us from being able to generate revenue, attain
profitability, or commercialize our products. In addition, it is possible that there will be further
legislation or regulation that could harm our business, financial condition, and results of operations.

Coverage and Reimbursement

In the US, many independent third-party payers, as  well as the Medicare and state Medicaid
programs, reimburse buyers of pharmaceutical products. Medicare is the federal program that provides
health care benefits to senior citizens and certain disabled and chronically ill persons. Medicaid is the
federal program administered by the states to provide health care benefits to certain indigent  persons.
In return for including our pharmaceutical commercial products in the  Medicare and Medicaid
programs, we may need to agree to pay  a rebate to state Medicaid agencies that provide
reimbursement for those products. We will  also have to agree to sell our commercial products under
contracts with the Department of Veterans Affairs, Department of Defense, Public Health Service, and
numerous other federal agencies as well as certain hospitals that are designated as 340B covered
entities (entities designated by federal programs to receive drugs at  discounted prices) at prices that are
significantly below the price we may charge to commercial pharmaceutical distributors. These programs
and contracts are highly regulated and may  impose restrictions on our business. Failure to comply with
these regulations and restrictions could result in a loss  of  our ability to continue receiving
reimbursement for our drugs once approved.

Different pricing and reimbursement schemes exist in  other  countries. In the European
Community, governments influence the price of pharmaceutical products through their pricing and
reimbursement rules and control of national health care systems that fund  a large part of the cost of
those products to consumers. Some jurisdictions operate positive  and negative list systems under which
products may only be marketed once a reimbursement  price has been agreed. To obtain reimbursement
or pricing approval, some of these countries may require the completion of clinical trials that compare
the cost-effectiveness of a particular drug candidate to currently available therapies. Other member
states allow companies to fix their own prices for  medicines, but monitor and control company profits.
The downward pressure on health care costs  in general, particularly prescription  drugs, has become
very intense. As a result, increasingly  high barriers are being erected to the entry of new products. In

addition, in some countries, cross-border imports from low-priced markets exert a commercial pressure

on pricing within a country. There can be no assurance that any country that  has price controls or

reimbursement limitations for dug products will allow favorable reimbursement and pricing

arrangements of our products.

Other Healthcare Laws and Compliance Requirements

The federal Anti-Kickback Statute prohibits, among other things, knowingly and willfully offering,

paying, soliciting or receiving remuneration to induce or in return for purchasing, leasing, ordering or

arranging for the purchase, lease or order of any healthcare  item or service  reimbursable  under

Medicare, Medicaid or other federally  financed healthcare programs. This statute has been interpreted

to apply to arrangements between pharmaceutical manufacturers on  one hand and prescribers,

purchasers, and formulary managers on the other. Although there are a number of statutory

exemptions and regulatory safe harbors protecting some business arrangements from prosecution, the

exemptions and safe harbors are drawn narrowly and practices that involve remuneration intended to

induce prescribing, purchasing or recommending may be subject to scrutiny if  they do not qualify for an

exemption or safe harbor. Our practices may not in all  cases meet all of the criteria for safe harbor

protection from federal Anti-Kickback Statute liability. The reach of the Anti-Kickback  Statute was

broadened by the Affordable Care Act,  which, among other things, amends the intent requirement of

the federal Anti-Kickback Statute. Pursuant to the statutory amendment, a person or entity no longer

needs to have actual knowledge of this statute or specific intent to violate it in order to have

committed a violation. In addition, the Affordable Care Act provides that the government may  assert

that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute

constitutes a false or fraudulent claim for purposes  of the civil False Claims Act (discussed below) or

the civil monetary penalties statute, which imposes penalties  against any person who is determined to

have presented or caused to be presented a claim to a federal health program that the person knows  or

should know is for an item or service that was not provided as claimed or is false or fraudulent.

The federal False Claims Act prohibits any person from knowingly presenting, or causing to be

presented, a false claim for payment to the federal government or knowingly making, using, or causing

to be made or used a false record or statement material to a  false or fraudulent claim to the federal

government. As a result of a modification made  by the Fraud Enforcement  and Recovery Act of 2009,

a claim includes ‘‘any request or demand’’ for money or property presented to the U.S. government.

Recently, several pharmaceutical and other healthcare companies have  been prosecuted under these

laws for allegedly providing free product to customers with the expectation that the customers would

bill federal programs for the product. Other companies have been prosecuted for causing false claims

to be submitted because of the companies’ marketing of the product for unapproved, and thus

non-reimbursable, uses. HIPAA created new federal criminal statutes that prohibit knowingly and

willfully executing a scheme to defraud any healthcare benefit program, including private third-party

payors and knowingly and willfully falsifying, concealing or covering up a  material fact or making any

materially false, fictitious or fraudulent statement in connection with the delivery of or payment  for

healthcare benefits, items or services.  Also, many states have similar fraud and  abuse statutes or

regulations that apply to items and services reimbursed under Medicaid and other  state programs, or,

in several states, apply regardless of the payor.

In addition, we may be subject to data privacy and security regulation by both the  federal

government and the states in which we conduct our business. HIPAA, as amended by HITECH,  and its

implementing regulations, imposes requirements relating to the privacy, security and transmission of

individually identifiable health information. Among  other things, HITECH  makes HIPAA’s privacy and

security standards directly applicable  to  ‘‘business associates’’—independent contractors or agents of

covered entities that receive or obtain protected health information in connection with providing a

service on behalf of a covered entity.  HITECH also increased the civil and criminal penalties that may

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be imposed against covered entities, business  associates and  possibly other persons,  and gave state
attorneys general new authority to file civil actions for damages or injunctions in federal courts to
enforce the federal HIPAA laws and  seek attorney’s fees and costs associated with pursuing federal civil
actions. In addition, state laws govern the privacy and  security of  health  information in specified
circumstances, many of which differ from each  other  in significant ways  and may  not  have the same
effect, thus complicating compliance efforts.

In the United States, our activities are  potentially subject to additional regulation by various

federal, state and local authorities in addition to the FDA, including the Centers for Medicare and
Medicaid Services, other divisions of HHS (e.g., the Office of Inspector General), the  DOJ and
individual U.S. Attorney offices within the DOJ, and state and local governments. If a drug product is
reimbursed by Medicare or Medicaid, pricing and rebate  programs must comply with, as applicable, the
Medicare Prescription Drug, Improvement, and Modernization Act  of 2003 as well as the Medicaid
rebate requirements of the Omnibus Budget Reconciliation Act of 1990, or the OBRA, and the
Veterans Health Care Act of 1992, each as amended. Among  other things,  the OBRA requires drug
manufacturers to pay rebates on prescription drugs to state Medicaid programs and empowers states to
negotiate rebates on pharmaceutical prices, which may result in prices for our future products that will
likely be lower than the prices we might otherwise obtain. If products  are made available to authorized
users of the Federal Supply Schedule of the General Services Administration, additional laws and
requirements apply. Under the Veterans Health Care Act, or VHCA, drug companies are required to
offer some drugs at a reduced price to a number of federal agencies including the U.S. Department of
Veterans Affairs and DoD, the Public  Health Service and some private  Public Health Service
designated entities in order to participate in other federal funding programs including Medicaid. Recent
legislative changes require that discounted prices be offered for specified DoD purchases for its
TRICARE program via a rebate system. Participation  under the VHCA requires  submission of pricing
data and calculation of discounts and rebates pursuant  to  complex statutory formulas, as  well as the
entry into government procurement contracts governed by the Federal Acquisition Regulation.

Because of the breadth of these laws and the narrowness of available statutory and regulatory
exemptions, it is possible that some of our  business  activities could be subject to challenge  under one
or more of such laws. If our operations are found to be in violation of any of the federal and state laws
described above or any other governmental regulations  that apply to us, we may be subject to penalties,
including criminal and significant civil monetary penalties, damages, fines, imprisonment, exclusion from
participation in government programs, injunctions, recall or seizure of products, total or partial
suspension of production, denial or withdrawal of pre-marketing  product  approvals, private ‘‘qui tam’’
actions brought by individual whistleblowers in the  name of the government or refusal to allow us to
enter into supply contracts, including government contracts, and the curtailment or restructuring of our
operations, any of which could adversely affect our ability to operate our business and our results of
operations. To the extent that any of our products are sold in  a  foreign country, we may be subject to
similar foreign laws and regulations, which may include, for instance, applicable post-marketing
requirements, including safety surveillance, anti-fraud and abuse laws, and implementation of corporate
compliance programs and reporting of payments or transfers of value to healthcare professionals.

In order to distribute products commercially, we must comply with state laws that require the

registration of manufacturers and wholesale distributors of pharmaceutical products in a  state,
including, in some states, manufacturers and distributors who  ship products into the state even if such
manufacturers or distributors have no place of business within the  state. Some states also  impose
requirements on manufacturers and distributors to establish the  pedigree  of product in the chain of
distribution, including some states that require manufacturers and others to adopt new technology
capable of tracking and tracing product  as it moves through the  distribution chain. Several states have
enacted legislation requiring pharmaceutical companies to,  among other things, establish marketing
compliance programs, file periodic reports with the state, make periodic public disclosures on sales,

marketing, pricing, clinical trials and other activities, and/ or register their sales representatives, as well

as to prohibit pharmacies and other  healthcare entities from providing specified physician prescribing

data to pharmaceutical companies for use in sales and marketing, and to prohibit other specified sales

and marketing practices. All of our activities are potentially subject to federal and state consumer

protection and unfair competition laws.

Employees

employees are good.

ITEM 1A. RISK FACTORS

As of December 31, 2014, we had 50 employees. As part of our efforts to conserve cash, we are

reducing our headcount during the first half of 2015. We have no collective bargaining agreements with

our employees and have not experienced any work stoppages. We believe that relations with our

You should carefully consider the following risk factors together with the other information contained in

this Annual Report, including our financial statements and the related notes appearing in this report. We

cannot assure you that any of the events discussed in the risk factors below will not occur. If any of the

following risks actually occur, they may materially harm our business and our financial condition and results

of operations. In this event, the market price of our common stock could decline and your investment could

be lost. You should understand that it is not possible to predict or identify all such risks. Consequently, you

should not consider the following to be a complete discussion of all  potential risks or uncertainties.

Risks Related to Our Financial Position and Capital Needs

If we are unable to meet our needs for additional funding in the future, we will be required to limit, scale

back or cease operations.

We do not have the funding resources necessary  to  carry out all of our proposed operating

activities. We will need to obtain additional financing in the future in order to fully fund rigosertib or

any other product candidates through the regulatory approval process. Accordingly, we may delay our

planned clinical trials, including the planned new Phase 3 clinical trial of rigosertib IV in higher-risk

MDS patients, until we secure adequate additional funding. If we seek to proceed with a new clinical

trial without additional funding, we may receive questions or comments from the FDA, fail  to  obtain

IRB approval, or find it more difficult to enroll patients in the trial. Additionally, we plan to scale

down our operations in order to reduce spending on general  and administrative functions, research and

development, and other clinical trials, but may not be able to do so quickly .

We are exploring various dilutive and non-dilutive sources of funding, including equity and debt

financings, strategic alliances, business development and other sources. However, we may not be able to

obtain additional funding on favorable terms,  if at all. If we are  unable to secure adequate additional

funding, we will continue to delay, scale-back or eliminate certain of our planned research, drug

discovery and development activities and certain other aspects  of  our operations and our business until

such time as we are successful in securing adequate additional  funding. As a result, our business,

operating results, financial condition and cash flows may be materially and adversely affected. We  will

incur substantial costs beyond the present and  planned clinical trials in order to file a New  Drug

Application (NDA) for rigosertib. The nature, design, size and cost of further studies will depend in

large part on the outcome of preceding studies and discussions with  regulators.

Our future capital requirements will depend on many factors, including:

(cid:129) timing and success of our clinical trials for rigosertib;

(cid:129) continued progress of and increased spending related to our research and development activities;

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(cid:129) conditions in the capital markets and  the biopharmaceutical industry, particularly with respect to

raising capital or entering into strategic arrangements;

December 31, 2014, 2013 and 2012, we reported net losses of $63.8 million, $62.6 million and

$29.9 million, respectively, and we had an accumulated deficit of $294.6 million at December 31,  2014.

(cid:129) progress with preclinical experiments and  clinical trials, including regulatory approvals  necessary

for advancement and continuation of our  development programs;

(cid:129) changes in regulatory requirements and guidance of the FDA and other regulatory authorities,
which may require additional clinical trials to evaluate safety and/or efficacy, and thus have
significant impacts on our timelines, cost projections, and financial requirements;

(cid:129) ongoing general and administrative expenses related to our reporting obligations under the

Exchange Act;

(cid:129) cost, timing, and results of regulatory reviews and approvals;

(cid:129) costs of any legal proceedings, claims, lawsuits  and investigations;

(cid:129) success, timing, and financial consequences of any existing or future  collaborative, licensing  and
other arrangements that we may establish, including potential granting of licenses to one or
more of our programs in various territories, or  otherwise monetizing one or more of our
programs;

(cid:129) cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual

property rights;

(cid:129) costs of commercializing any of our other  product candidates;

(cid:129) technological and market developments;

(cid:129) cost of manufacturing development; and

(cid:129) timing and volume of sales of products for which  we obtain marketing approval.

These factors could result in variations from our projected operating  and  liquidity requirements.
Additional funds may not be available when needed, or, if available, we may not be able to obtain such
funds on terms acceptable to us. If adequate funds are unavailable, we  may be required, among other
things, to:

(cid:129) delay, reduce the scope of or eliminate one or more of  our research  or development programs;

(cid:129) license rights to technologies, product candidates  or products at an earlier stage than otherwise
would be desirable or on terms that are less favorable to us than might otherwise be available;

(cid:129) obtain funds through arrangements  that may require us to relinquish rights to product

candidates or products that we would otherwise  seek to develop or commercialize by ourselves;
or

(cid:129) cease operations.

We have incurred significant losses since our inception and anticipate that  we will continue to incur losses in
the future.

We are a clinical-stage biopharmaceutical company. Investment in biopharmaceutical product

development is highly speculative because it entails substantial upfront capital expenditures and
significant risk that a product candidate  will  fail to gain regulatory approval or become commercially
viable. We do not have any products approved by regulatory authorities for marketing and have not
generated any revenue from product sales to date,  and  we continue  to  incur  significant research,
development and other expenses related to our ongoing operations.  As a result, we are not profitable
and have incurred  losses in every reporting period since  our inception in 1998. For the years ended

We expect to continue to incur significant expenses and operating losses for the  foreseeable future.

These losses may increase as we continue the research and development of,  and seek regulatory

approvals for, our product candidates, and potentially  begin to commercialize any products that may

achieve regulatory approval. We may encounter unforeseen expenses, difficulties, complications, delays

and other unknown factors that may adversely affect our business. For example, the FDA’s and EMA’s

preference that we conduct an additional randomized  Phase 3 clinical trial for rigosertib IV for

higher-risk MDS will cause us to incur additional expenses and has altered our anticipated regulatory

approval timeline. The size of our future net losses will depend, in part, on the rate of future  growth of

our expenses and our ability to generate revenues. If any of our product candidates fail in clinical trials

or do not gain regulatory approval, or if approved, fail  to  achieve market acceptance, we may never

become profitable. Even if we achieve profitability in the future, we may not be able to sustain

profitability in subsequent periods.

We have a limited operating history, which may make it  difficult for you  to evaluate the  success of our

business to date and to assess our future viability.

Our operations to date have been limited to organizing and staffing our company, acquiring

product and technology rights, discovering novel molecules and conducting product development

activities for our product candidates. We have not yet obtained regulatory approval for any of our

product candidates. Consequently, any predictions about  our future success, performance or viability

may not be as accurate as they could be if we had a longer operating history or approved products on

the market.

We currently have no source of product revenue and may never become profitable.

To date, we have not generated any revenues from commercial product sales.  Our ability to

generate revenue from product sales and achieve profitability will depend upon our ability to

successfully commercialize products, including any of our current product candidates, or other product

candidates that we may in-license or acquire in the future. Even if we are able to successfully achieve

regulatory approval for these product candidates, we  do not know when any of these products will

generate revenue from product sales for us, if at all. Our ability to generate revenue from product sales

from our current or future product candidates also depends on a number  of additional factors,

including our ability to:

(cid:129) successfully complete development activities, including  the necessary clinical trials;

(cid:129) complete and submit new drug applications, or NDAs, to the U.S. Food and Drug

Administration, or FDA, and obtain regulatory  approval for indications for which there is a

commercial market;

authorities;

(cid:129) complete and submit applications to, and obtain regulatory approval from, foreign regulatory

(cid:129) successfully complete all required regulatory agency inspections;

(cid:129) set a commercially viable price for our products;

(cid:129) obtain commercial quantities of our products at acceptable cost levels;

(cid:129) develop a commercial organization capable of sales, marketing and distribution for any products

we intend to sell ourselves in the markets  in which we choose to commercialize on  our own;

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(cid:129) find suitable distribution partners to help us market,  sell and distribute  our approved products in

other markets; and

(cid:129) obtain coverage and adequate reimbursement from  third parties, including government and

private payors.

In addition, because of the numerous risks and uncertainties associated with product development,
including that our product candidates may  not advance through development or  achieve the endpoints
of applicable clinical trials, we are unable to predict the  timing or amount of increased expenses, or
when or if we will be able to achieve or maintain profitability. Even  if we are  able to complete the
development and regulatory process for any product candidates, we anticipate incurring significant costs
associated with commercializing these products.

Even if we are able to generate revenues from the sale of our products,  we may  not  become
profitable and may need to obtain additional funding to continue operations. If we fail to become
profitable or are unable to sustain profitability on  a continuing basis, then we may be unable to
continue our operations at planned levels and be forced to reduce our operations.

Raising additional capital may cause dilution  to our existing stockholders, restrict our operations or require
us to relinquish rights to our technologies or product candidates.

Until we can generate substantial revenue from product sales, if ever, we expect to seek additional

capital through a combination of private and public equity offerings, debt  financings, strategic
collaborations and alliances and licensing  arrangements. To the extent  that  we raise additional capital
through the sale of equity or convertible  debt securities, the ownership interests of existing stockholders
will be diluted, and the terms may include liquidation or other preferences that adversely affect  the
rights of existing stockholders. Debt financing, if  available, may involve agreements that  include
restrictive covenants limiting our ability to take  important actions, such as incurring additional debt,
making capital expenditures or declaring dividends. If we raise additional  funds through strategic
collaborations and alliances or licensing arrangements with third parties,  we may have to relinquish
valuable rights to our technologies or product candidates, or grant  licenses on terms that are not
favorable to us. If we are unable to raise additional funds  through equity or  debt financing when
needed, we may be required to delay,  limit, reduce or terminate our  product development  or
commercialization efforts or grant rights to develop  and market  product candidates that we would
otherwise prefer to develop and market ourselves.

Risks Related to Our Business and Industry

Our future success is dependent primarily on  the regulatory  approval and commercialization of our product
candidates, including rigosertib.

We do not have any products that have gained regulatory  approval. Currently, our only clinical-

stage product candidates are rigosertib, briciclib and recilisib, and  rigosertib is our only late-stage
product candidate.

As a result, our business is substantially dependent on  our ability to obtain regulatory approval for,

and, if approved, to successfully commercialize rigosertib and, to a lesser degree, briciclib and recilisib
in a timely manner. We cannot commercialize product  candidates in the United States without first
obtaining regulatory approval for the product from the FDA.  Similarly, we cannot commercialize
product candidates outside of the United States  without obtaining  regulatory approval  from comparable
foreign regulatory authorities. Before obtaining regulatory approvals for the commercial sale of any
product candidate for a target indication, we must demonstrate  with substantial evidence gathered in
preclinical and well-controlled clinical studies, generally including two well-controlled Phase 3 trials,
and, with respect to approval in the United States, to the satisfaction of the FDA, that the product

candidate is safe and effective for use for that target indication and that the manufacturing facilities,

processes and controls are adequate. Even if rigosertib or another product candidate were to

successfully obtain approval from the FDA  and comparable foreign regulatory authorities, any approval

might contain significant limitations related to use restrictions for specified age groups, warnings,

precautions or contraindications, or may be subject to burdensome post-approval study or risk

management requirements. If we are unable to obtain regulatory approval for rigosertib in one or more

jurisdictions, or any approval contains significant limitations, we may not be able to obtain sufficient

funding or generate sufficient revenue to continue the development of briciclib, recilisib, or any other

product candidate that we may discover, in-license, develop or acquire in the future. Furthermore, even

if we obtain regulatory approval for rigosertib, we will still need  to  develop a  commercial organization,

establish commercially viable pricing and obtain approval  for adequate reimbursement from third-party

and government payors. If we or our commercialization collaborators are unable to successfully

commercialize rigosertib, we may not  be  able to earn sufficient revenues to  continue our business.

The results of preclinical testing or earlier clinical studies are not necessarily predictive of future results,

rigosertib, or any other product candidate we advance into clinical trials may not have favorable  results in

later-stage clinical trials or receive regulatory approval.

Success in preclinical testing and earlier clinical studies does not ensure that later clinical trials will

generate adequate data to demonstrate the efficacy and safety of an investigational drug. A number of

companies in the pharmaceutical and biotechnology industries, including those with greater resources

and experience, have suffered significant setbacks in clinical trials, even after seeing promising results in

earlier clinical trials. Despite the results reported in earlier clinical trials for  rigosertib and our other

clinical-stage product candidates, we do not know whether the later-stage clinical  trials we may  conduct

in the future will demonstrate adequate efficacy and safety to result in  regulatory approval to market

any of our product candidates in any particular jurisdiction. If later-stage  clinical trials do not produce

favorable results, our ability to achieve regulatory  approval for any of our product candidates may  be

adversely impacted.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome.

Clinical testing is expensive, can take many years to complete, and its outcome  is inherently

uncertain. Failure can occur at any time during the  clinical trial process. Product candidates in later

stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed

through preclinical studies and early clinical  trials.

We may experience delays in our ongoing  or future clinical trials and we do not know whether

planned clinical trials will begin or enroll  subjects on time, need to be redesigned or  be  completed on

schedule, if at all. For example, we experienced a clinical  hold with our initial IND submission  for

recilisib based on the need to conduct additional toxicology studies and to revise  quality requirements

for manufacture of the drug product. While we do not anticipate any such delays, there  can be no

assurance that the FDA will not put clinical trials of recilisib or any other of our product candidates on

clinical hold in the future. Clinical trials may  be  delayed, suspended or prematurely terminated for a

variety of reasons, such as:

(cid:129) delay or failure in reaching agreement with the FDA or a comparable foreign regulatory

authority on a trial design that we are able to execute;

(cid:129) delay or failure in obtaining authorization to commence a trial or inability to comply with

conditions imposed by a regulatory authority regarding the scope or design of a clinical study;

(cid:129) delay or failure in reaching agreement on acceptable terms with prospective contract research

organizations, or CROs, and clinical trial sites, the  terms of which can be subject to extensive

negotiation and may vary significantly among different CROs and trial sites;

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(cid:129) delay or failure in obtaining institutional review board, or IRB, approval or the approval of
other reviewing entities, including comparable foreign  regulatory authorities,  to  conduct a
clinical trial at each site;

(cid:129) withdrawal of clinical trial sites from our  clinical trials  as a result  of changing standards of care

or the ineligibility  of a site to participate in our  clinical trials;

(cid:129) delay or failure in recruiting and enrolling suitable subjects to participate in a trial;

(cid:129) delay or failure in subjects completing a  trial or returning  for post-treatment follow-up;

(cid:129) clinical sites and investigators deviating from trial protocol, failing to conduct the trial in

accordance with regulatory requirements, or dropping out of a trial;

(cid:129) inability to identify and maintain a sufficient number of trial sites,  many of which may already be
engaged in other clinical trial programs, including  some that may be for the same indication;

(cid:129) failure of our third-party clinical trial managers to satisfy  their contractual  duties or meet

expected deadlines;

(cid:129) delay or failure in adding new clinical trial sites;

(cid:129) delay or failure in meeting regulatory agency inspectional requirements;

Our product candidates could fail to receive regulatory approval from the FDA or a comparable

(cid:129) ambiguous or negative interim results or results  that are inconsistent  with earlier results;

(cid:129) feedback from the FDA, the IRB, data safety monitoring  boards, or a comparable foreign

regulatory authority, or results from  earlier stage  or concurrent preclinical and clinical studies,
that might require modification to the protocol for the  trial;

(cid:129) decision by the FDA, the IRB, a comparable foreign regulatory authority, or us, or

recommendation by a data safety monitoring board or comparable foreign regulatory authority,
to suspend or terminate clinical trials at any time for safety issues or for any other reason;

(cid:129) unacceptable risk-benefit profile, unforeseen safety  issues or  adverse side effects;

(cid:129) failure to demonstrate a benefit from using a  drug;

(cid:129) difficulties in manufacturing or obtaining from  third parties sufficient quantities  of a product

candidate for use in clinical trials;

(cid:129) lack of adequate funding to continue the clinical trial, including the incurrence  of unforeseen

costs due to enrollment delays, requirements to conduct additional  clinical studies or increased
expenses associated with the services of our  CROs and other  third parties;  or

(cid:129) changes in governmental regulations or  administrative actions or lack of adequate funding to

continue the clinical trial.

Patient enrollment, a significant factor in the  timing of clinical trials, is affected by many factors
including the size and nature of the patient population, the proximity of subjects to clinical sites, the
eligibility criteria for the trial, the design of the  clinical trial, ability to obtain and maintain patient
consents, risk that enrolled subjects will drop out before completion, competing clinical trials and
clinicians’ and patients’ perceptions as to the potential advantages  of  the drug being studied in relation
to other available therapies, including any new drugs that may be approved for the indications we are
investigating. Furthermore, we rely on CROs and  clinical trial sites to ensure the proper and timely
conduct  of our clinical trials, and while we have agreements governing their committed  activities, we
have limited influence over their actual performance.

If we experience delays in the completion or termination of, any clinical trial of  our product

candidates, the commercial prospects of our product candidates will be harmed, and our ability to

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generate product revenues from any of these product candidates will be delayed. In addition, any delays

in completing our clinical trials will increase our costs, slow down our product candidate development

and approval process and jeopardize our ability to commence product  sales  and generate revenues. In

addition, many of the factors that could cause a delay in the commencement or completion of clinical

trials may also ultimately lead to the denial of  regulatory approval of our product candidates.

The regulatory approval processes of the FDA and comparable foreign regulatory authorities are lengthy,  time

consuming and inherently unpredictable, and  if we are  ultimately unable to obtain regulatory approval for our

product candidates, our business will be substantially harmed.

The time required to obtain approval by the FDA and comparable foreign regulatory authorities is

unpredictable, but typically takes many years following the commencement of preclinical studies and

clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory

authorities. In addition, approval policies, regulations, or the type and amount of clinical data necessary

to gain approval may change during the course of a product candidate’s clinical development and may

vary among jurisdictions. We have not obtained regulatory approval for any product candidate, and it is

possible that none of our existing product candidates or any product candidates we may discover,

in-license or acquire and seek to develop in the future  will ever obtain regulatory approval.

foreign regulatory authority for many reasons, including:

(cid:129) disagreement over the design or implementation of our clinical trials;

(cid:129) failure to demonstrate that a product candidate is safe and effective for its proposed indication;

(cid:129) failure of clinical trials to meet the level of statistical significance required for approval;

(cid:129) failure to demonstrate that a product candidate’s clinical and other benefits outweigh  its  safety

risks;

(cid:129) disagreement over our interpretation of data from preclinical studies or clinical trials;

(cid:129) delay or failure in meeting regulatory agency inspectional requirements;

(cid:129) disagreement over whether to accept efficacy results from clinical  trial sites outside the United

States or clinical trial sites where the standard of care is potentially different from that in  the

United States;

(cid:129) the insufficiency of data collected from  clinical trials of our product candidates to support the

submission and filing of an NDA or other submission  or to  obtain regulatory approval;

(cid:129) disapproval of the manufacturing processes or facilities of third-party manufacturers with whom

we contract for clinical and commercial supplies; or

(cid:129) changes in the approval policies or regulations that render our preclinical  and clinical data

insufficient for approval.

The FDA or a comparable foreign regulatory authority may require more  information, including

additional preclinical or clinical data to support approval, which may delay or prevent approval and  our

commercialization plans, or we may decide to abandon the development program altogether. Even if

we do obtain regulatory approval, our product candidates may be approved for fewer or  more limited

indications than we request, approval contingent on the performance of costly post-marketing clinical

trials, or approval with a label that does not include  the labeling claims necessary or desirable for the

successful commercialization of that product candidate. In addition, the FDA may require the

establishment of Risk Evaluation Mitigation Strategies, or REMS, or a comparable foreign  regulatory

authority may require the establishment of a similar strategy, that may restrict distribution of our

products and impose burdensome implementation requirements on us.  Any of the foregoing scenarios
could materially harm the commercial prospects for our product candidates.

Approval by the FDA does not ensure approval by  foreign regulatory authorities and approval by
one or more foreign regulatory authorities does not ensure approval by regulatory authorities in other
countries or by the FDA. However, a failure or delay in obtaining regulatory approval in one country
may have a negative effect on the regulatory process  in others. We may not be able to file for
regulatory approvals and even if we file  we may not receive the necessary approvals to commercialize
our products in any market.

Our product candidates may cause undesirable side effects or have other properties that could delay  or prevent
their regulatory approval, limit the commercial profile of an approved label,  or result in significant negative
consequences following any marketing approval.

Undesirable side effects caused by our product candidates could cause us or regulatory  authorities

to interrupt, delay or halt clinical trials and could result in a more restrictive label or  the delay or
denial of regulatory approval by the FDA or other comparable foreign  regulatory authority. For
example, patients in our earlier-stage clinical trials  of  rigosertib in some cases experienced side effects,
some of which were severe.

As a result of undesirable side effects or safety or toxicity issues  that we may experience in our

clinical trials, we may not receive approval to market  any product candidates, which could prevent us
from ever generating revenues or achieving profitability. Results  of  our trials could reveal an
unacceptably high severity and prevalence of side effects. In such  an event, our trials could be
suspended or terminated and the FDA  or comparable foreign regulatory authorities could order us to
cease further development or deny approval of our product candidates for any or all targeted
indications. These side effects could affect patient  recruitment or the ability of  enrolled subjects  to
complete the trial or result in potential  product liability claims.

Additionally, if any of our product candidates receives marketing approval, and we  or others later

identify undesirable side effects caused by such product,  a number of potentially significant negative
consequences could result, including:

(cid:129) we may be forced to suspend marketing of  such product;

(cid:129) regulatory authorities may withdraw their approvals of such product;

(cid:129) seize or detain products, refuse to permit the import or export of products, or require us to

(cid:129) regulatory authorities may require additional warnings on the label that could diminish the usage

or otherwise limit the commercial success  of such products;

(cid:129) we may be required to conduct post-market studies;

(cid:129) we could be sued and held liable for harm caused to subjects  or patients;  and

(cid:129) our reputation may suffer.

Any of these events could prevent us from achieving or maintaining market acceptance of the

particular product candidate, if approved.

Even if our product candidates receive regulatory approval,  they may still face future development  and
regulatory difficulties.

Even if we obtain regulatory approval for a product  candidate, it would be subject to ongoing

requirements by the FDA and comparable foreign regulatory authorities governing the manufacture,
quality control, further development, labeling, packaging, storage, distribution, safety surveillance,
import, export, advertising, promotion, recordkeeping  and reporting of safety and other post-market
information. The safety profile of any  product will continue to be closely monitored by the FDA and

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comparable foreign regulatory authorities after approval. If the FDA or comparable foreign regulatory

authorities become aware of new safety information after approval of any of our product candidates,

they may require labeling changes or establishment of a REMS or similar strategy, impose significant

restrictions on a product’s indicated uses  or marketing, or impose ongoing requirements for potentially

costly post-approval studies or post-market surveillance. The label ultimately approved for rigosertib, if

it achieves marketing approval, may include restrictions on use.

In addition, manufacturers of drug products and their facilities are subject to continual review and

periodic inspections by the FDA and other regulatory authorities for compliance  with current good

manufacturing practices, or cGMP, and other regulations. If we or a regulatory agency discover

previously unknown problems with a product, such as adverse events of unanticipated severity or

frequency, or problems with the facility where the product is manufactured, a regulatory agency may

impose restrictions on that product, the manufacturing facility or us, including requiring recall or

withdrawal of the product from the market or suspension of manufacturing. If we, our product

candidates or the manufacturing facilities for our product  candidates fail to comply with applicable

regulatory requirements, a regulatory agency may:

(cid:129) issue warning letters or untitled letters or otherwise unacceptable  inspectional findings;

(cid:129) mandate modifications to promotional materials or require us to provide corrective information

to healthcare practitioners;

(cid:129) require us to enter into a consent decree, which can include imposition of various fines,

reimbursements for inspection costs,  required due dates for specific actions and penalties for

noncompliance;

(cid:129) seek an injunction or impose civil or criminal penalties or monetary fines;

(cid:129) suspend or withdraw regulatory approval;

(cid:129) suspend any ongoing clinical studies;

(cid:129) refuse to approve pending applications or supplements to applications filed by us;

(cid:129) suspend or impose restrictions on  operations, including costly new manufacturing requirements;

or

initiate a product recall.

The occurrence of any event or penalty described above may inhibit our ability to commercialize

our products and generate revenue.

Advertising and promotion of any product candidate that obtains approval  in the United States will

be heavily scrutinized by the FDA, the Department of Justice, or the DOJ, the Office of Inspector

General of the Department of Health and Human Services, or HHS, state attorneys general, members

of Congress and the public. Violations, including promotion of our products for unapproved or off-label

uses, are subject to enforcement letters, inquiries and investigations, and civil and criminal sanctions by

the FDA. Additionally, advertising and promotion of any product candidate that obtains  approval

outside of the United States will be heavily  scrutinized by comparable foreign regulatory authorities.

In the United States, engaging in impermissible promotion of our  products for off-label uses can

also subject us to false claims litigation under federal and state statutes, which can lead to civil and

criminal penalties and fines and agreements that materially restrict the manner in which we promote or

distribute our drug products. These false claims statutes include the federal False Claims Act, which

allows any individual to bring a lawsuit against a pharmaceutical company on behalf of the federal

government alleging submission of false or fraudulent claims,  or causing  to  present such false or

fraudulent claims, for payment by a federal program such as Medicare  or Medicaid. If the government
prevails in the lawsuit, the individual will share in any fines or settlement funds. Since 2004, these False
Claims Act lawsuits against pharmaceutical companies have increased  significantly  in volume and
breadth, leading to several substantial civil  and criminal settlements based on certain sales  practices
promoting off-label drug uses. This growth in litigation has increased the risk that a pharmaceutical
company will have to defend a false claim action, pay settlement  fines or restitution, agree to comply
with burdensome reporting and compliance obligations, and be excluded from the Medicare, Medicaid
and other federal and state healthcare programs. If we do  not lawfully promote our approved products,
we may become subject to such litigation and, if we are not successful in defending against such
actions, those actions could compromise our ability to become profitable.

Failure to obtain regulatory approval in international jurisdictions would prevent our product candidates from
being marketed abroad.

In order to market and sell our products in the European Union  and many  other jurisdictions,

including Japan and Korea, we must obtain separate  marketing approvals and comply with numerous
and varying regulatory requirements. The approval procedure varies among countries and can involve
additional testing. The time required  to  obtain approval may differ substantially from that required to
obtain FDA approval. The regulatory approval process outside the United States generally includes all
of the risks associated with obtaining FDA approval. In addition, in many countries outside  the United
States, it  is required that the product be approved for reimbursement before the  product can be
approved for sale in that country. We may not obtain approvals from regulatory authorities outside the
United States on a timely basis, if at all. Approval by the  FDA does not ensure approval by regulatory
authorities in other countries or jurisdictions, and approval by one regulatory authority outside the
United States does not ensure approval by regulatory authorities in other  countries or jurisdictions or
by the FDA. We may not be able to  file for marketing approvals and may not receive necessary
approvals to commercialize our products in  any market. If we are unable to  obtain approval of any of
our product candidates by regulatory authorities in the European Union, Japan, Korea or another
country, the commercial prospects of that product candidate may be significantly diminished and our
business prospects could decline.

Healthcare legislation, including potentially unfavorable pricing regulations or other healthcare reform
initiatives, may increase the difficulty and cost for us to  obtain marketing approval of and commercialize our
product candidates and affect the prices  we may obtain.

The regulations that govern, among other things, marketing approvals, coverage, pricing and
reimbursement for new drug products vary widely  from country to country. In the United States and
some foreign jurisdictions, there have been a number of legislative  and regulatory changes and
proposed changes regarding the healthcare system that could prevent  or delay marketing approval of
our product candidates, restrict or regulate post-approval activities and  affect our ability to successfully
sell any product candidates for which we obtain marketing approval. The Patient Protection and
Affordable Care Act and the Health Care and Education Affordability Reconciliation Act of 2010, or
the Affordable Care Act, among other  things, imposes a significant  annual fee on companies that
manufacture or import branded prescription  drug products. It  also contains  substantial provisions
intended to broaden access to health insurance, reduce  or constrain the growth of healthcare spending,
enhance remedies against healthcare fraud and  abuse, add new transparency requirements for the
healthcare and health insurance industries, impose new taxes  and fees on pharmaceutical and medical
device manufacturers, and impose additional health policy reforms, any of which could negatively
impact our business. A significant number of provisions are not yet, or have only recently become
effective, but the Affordable Care Act is likely to continue the downward pressure on pharmaceutical
and medical device pricing, especially under the Medicare program, and may also increase  our
regulatory burdens and operating costs.

In addition, other legislative changes have been proposed and adopted since passage of the

Affordable Care Act. The Budget Control Act of 2011, among other things, created the Joint Select

Committee on Deficit Reduction to recommend to Congress proposals in spending reductions. The

Joint Select Committee did not achieve a targeted deficit reduction  of  an amount greater than  $1.2

trillion for the fiscal years 2012 through  2021, triggering  the legislation’s automatic reduction to several

government programs. This included aggregate reductions to Medicare payments to healthcare

providers of up to 2.0% per fiscal year, which went into effect in April 2013. In January 2013,  President

Obama signed into law the American Taxpayer Relief Act of 2012, which, among  other things, reduced

Medicare payments to several categories of healthcare providers and increased the statute of limitations

period for the government to recover overpayments to providers from three to five years. If we ever

obtain regulatory approval and successfully commercialize our product candidates, these new laws may

result in additional reductions in Medicare and other  healthcare funding, which  could  have a material

adverse effect on our customers and accordingly, our financial operations.

In the United States, the European Union and other potentially significant markets for our

product candidates, government authorities and third-party payors are increasingly attempting to limit

or regulate the price of medical products and services, particularly for new and innovative products and

therapies, which has resulted in lower average selling prices. Furthermore, the increased emphasis on

managed healthcare in the United States  and on country and regional pricing and reimbursement

controls in the European Union will put additional pressure on product pricing, reimbursement  and

usage, which may adversely affect our future product sales and results of operations. These pressures

can arise from rules and practices of managed care groups, judicial decisions and governmental laws

and regulations related to Medicare, Medicaid and healthcare reform, pharmaceutical reimbursement

policies and pricing in general.

Some countries require approval of the sale price of a drug before it can be marketed. In many

countries, the pricing review period begins after marketing or product licensing approval is granted. In

some foreign markets, prescription pharmaceutical pricing remains  subject to continuing governmental

control even after initial approval is granted. As a result, we might obtain marketing approval for a

product candidate in a particular country, but then be subject to price regulations that delay our

commercial launch of the product, possibly for lengthy time periods, which could negatively impact the

revenues we are able to generate from the sale of the product in that particular country. Adverse

pricing limitations may hinder our ability to recoup our investment in one or more product candidates

even if our product candidates obtain marketing approval.

Laws and regulations governing international operations may preclude us from developing, manufacturing and

selling certain product candidates outside of the United States and require us to develop and implement costly

compliance programs.

As we expand our operations outside of the United States, we must  comply with  numerous laws

and regulations in each jurisdiction in which we plan to operate. The creation and implementation of

international business practices compliance programs is costly and such programs are difficult to

enforce, particularly where reliance on  third parties is required.

The Foreign Corrupt Practices Act, or FCPA, prohibits any U.S. individual or business  from

paying, offering, authorizing payment or offering anything of value, directly or indirectly, to any foreign

official, political party or candidate for the  purpose of influencing any  act or decision of the  foreign

entity in order to assist the individual or business in obtaining or retaining  business. The FCPA also

obligates companies whose securities are listed in the United States to comply with certain accounting

provisions requiring the company to maintain books and records that accurately  and fairly reflect all

transactions of the corporation, including international subsidiaries, and to devise and maintain an

adequate system of internal accounting controls for international operations. The anti-bribery provisions

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of the FCPA are enforced primarily by the  DOJ. The Securities  and Exchange Commission, or the
SEC, is involved with enforcement of  the books and records provisions of  the FCPA.

Compliance with the FCPA is expensive and difficult, particularly in countries in which corruption

is a recognized problem. In addition, the FCPA presents  particular challenges in the pharmaceutical
industry, because, in many countries, hospitals are operated by  the  government, and doctors and other
hospital employees are considered foreign officials. Certain payments to hospitals in connection with
clinical studies and other work have been deemed to be improper payments to government officials and
have led to FCPA enforcement actions.

Various laws, regulations and executive orders also restrict the use and dissemination outside of

the United States, or the sharing with certain non-U.S. nationals, of information classified for national
security purposes, as well as certain products and technical data relating to those products. Our
expanding presence outside of the United States will  require us to dedicate additional resources to
comply with these laws, and these laws may preclude us from developing, manufacturing, or selling
certain products and product candidates outside of the United  States, which  could limit  our growth
potential and increase our development costs.

The failure to comply with laws governing international business practices may result in substantial
penalties, including suspension or debarment  from government contracting. Violation of the FCPA can
result in significant civil and criminal penalties. Indictment alone under the FCPA can lead to
suspension of the right to do business with the U.S. government until  the pending claims are resolved.
Conviction of a violation of the FCPA can result in  long-term disqualification  as a government
contractor. The termination of a government contract or relationship as a result of our  failure to satisfy
any of our obligations under laws governing international business practices would have a negative
impact on our operations and harm our reputation and  ability  to  procure government contracts. The
SEC also may suspend or bar issuers from trading securities on  U.S. exchanges for violations of  the
FCPA’s accounting provisions.

Even if we are able to commercialize our product  candidates, the  products may not receive coverage and
adequate reimbursement from third-party payors,  which could harm our business.

Our ability to commercialize any products successfully will depend, in part, on the extent to which
coverage and adequate reimbursement for these products  and related treatments will be available  from
government health administration authorities,  private health  insurers  and other organizations.
Government authorities and third-party payors, such as private  health insurers and health  maintenance
organizations, determine which medications they will cover and establish reimbursement levels. A
primary trend in the U.S. healthcare industry and  elsewhere is cost containment. Government
authorities and third-party payors have attempted to control costs by limiting coverage and the amount
of reimbursement for particular medications. Increasingly, third-party payors are requiring that drug
companies provide them with predetermined discounts from list prices  and  are challenging the prices
charged for medical products. Third-party payors may also seek additional clinical evidence, beyond the
data required to obtain marketing approval, demonstrating  clinical benefits and value in specific  patient
populations before covering our products for those patients. We  cannot be sure that coverage and
adequate reimbursement will be available for any product  that we commercialize and, if reimbursement
is available, what the level of reimbursement will be. Coverage and reimbursement may impact the
demand for, or the price of, any product candidate for  which we obtain marketing approval. If
reimbursement is not available or is available only  at limited levels, we may not be able to successfully
commercialize any product candidate for  which we  obtain marketing approval.

In the United States, the Medicare Prescription Drug, Improvement, and Modernization Act of

2003, or Medicare Modernization Act, established the Medicare Part  D  program and provided
authority for limitingthe number of drugs that will be covered in any  therapeutic class thereunder. The

Medicare Modernization Act, including its cost reduction initiatives, could decrease the coverage and

reimbursement rate that we receive for any of our approved products. Furthermore, private  payors

often follow Medicare coverage policies and payment limitations in setting their own reimbursement

rates. Therefore, any reduction in reimbursement that results from the Medicare Modernization Act

may result in a similar reduction in payments from private payors.

There may be significant delays in obtaining coverage and reimbursement for newly approved

drugs, and coverage may be more limited  than the purposes for which the drug is approved  by  the

FDA or comparable foreign regulatory authorities. Moreover, eligibility for coverage and

reimbursement does not imply that any drug will be paid for in all cases or at a rate that covers our

costs, including research, development, manufacture, sale and distribution.  Interim reimbursement

levels for new drugs, if applicable, may  also not be sufficient to cover our costs and may only be

temporary. Reimbursement rates may vary according to the use of the drug and the clinical setting in

which it is used, may be based on reimbursement levels already set for lower cost drugs and may be

incorporated into existing payments for other services. Net prices for drugs may  be  reduced by

mandatory discounts or rebates required by government healthcare programs or private payors and by

any future relaxation of laws that presently restrict imports of drugs from countries where  they may be

sold at lower prices than in the United States. Third-party payors often rely upon Medicare coverage

policy and payment limitations in setting their own reimbursement policies. Our inability to obtain

coverage and profitable reimbursement rates from both government-funded  and private payors for any

approved products that we develop could have a material adverse effect  on our operating results, our

ability to raise capital needed to commercialize products and our overall financial condition.

If we are unable to establish sales and marketing capabilities or enter into agreements  with third parties to

market and sell our product candidates,  we may  be unable to generate any revenue.

We do not currently have an organization for the sale, marketing and distribution of

pharmaceutical products and the cost of establishing  and maintaining such an organization may exceed

the cost-effectiveness of doing so. In order to market any products that may be approved by the FDA

and comparable foreign regulatory authorities, we must build our sales, marketing, managerial and

other non-technical capabilities or make arrangements with third parties to perform these services. If

we are unable to establish adequate sales, marketing and distribution capabilities, whether

independently or with third parties, we may not be able to generate product revenue  and may  not

become profitable. We will be competing with many companies that currently have extensive and

well-funded sales and marketing operations. Without an internal commercial organization or the

support of a third party to perform sales and marketing functions, we  may be unable to compete

successfully against these more established companies.

Our commercial success depends upon attaining significant market acceptance  of our product candidates,  if

approved, among physicians, patients, healthcare payors and the major operators of cancer clinics.

Even if we obtain regulatory approval for any of our product candidates that we may develop or

acquire in the future, the product may not gain market acceptance among physicians, healthcare payors,

patients or the medical community. Market acceptance of any of  our product candidates for which we

receive approval depends on a number of factors, including:

(cid:129) the efficacy and safety of such product candidates as demonstrated in clinical trials;

(cid:129) the clinical indications for which the product candidate is approved;

(cid:129) acceptance of such product candidates as a safe and effective treatment by physicians, major

operators of cancer clinics and patients;

(cid:129) the potential and perceived advantages of product candidates over alternative treatments;

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(cid:129) the safety of product candidates seen in broader patient groups, including its use outside the

approved indications;

(cid:129) the prevalence and severity of any side effects;

(cid:129) product labeling or product insert requirements of the FDA or other regulatory authorities;

(cid:129) the timing of market introduction of our products as well as competitive products;

(cid:129) the cost of treatment in relation to alternative treatments;

(cid:129) the availability of coverage and adequate reimbursement and pricing by third-party payors and

government authorities;

(cid:129) relative convenience and ease of administration; and

(cid:129) the effectiveness of our sales and marketing  efforts and those of  our collaborators.

If any of our product candidates are approved but fail to achieve market  acceptance among
physicians, patients, or healthcare payors,  we may not be able to generate significant revenues,  which
would compromise our ability to become profitable.

Our relationships with customers and third-party payors will be subject to applicable anti-kickback, fraud and
abuse and other healthcare laws and regulations,  which could expose  us to criminal sanctions, civil penalties,
contractual damages, reputational harm and diminished profits and future earnings.

Healthcare providers, physicians and third-party  payors  will  all play important roles in  the

recommendation and prescription of any product candidates for which we obtain marketing approval.
Our future arrangements with third-party payors and customers  may expose us to broadly applicable
fraud and abuse and other healthcare laws and regulations that may constrain the business or financial
arrangements and relationships through which we would market, sell and distribute our products. As a
pharmaceutical company, even though we do not and will not control referrals of healthcare services or
bill directly to Medicare, Medicaid or other third-party payors, federal and state healthcare laws and
regulations pertaining to fraud and abuse  and patients’ rights are and will be applicable to our business.
Restrictions under applicable federal and  state healthcare laws  and regulations that may affect our
ability to operate include the following:

(cid:129) the federal healthcare Anti-Kickback Statute will constrain our marketing practices, educational

programs, pricing policies, and relationships  with healthcare providers or other entities, by
prohibiting, among other things, persons  from knowingly and willfully soliciting, offering,
receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or
reward, or in return for, either the referral of an individual for, or  the  purchase, order or
recommendation of, any good or service, for which payment may be made under a federal
healthcare program such as Medicare  and Medicaid;

(cid:129) federal civil and criminal false claims laws and civil monetary penalty laws impose  criminal and
civil penalties, including through civil whistleblower or qui  tam  actions, against individuals or
entities for knowingly presenting, or causing to be presented, to the federal government,
including the Medicare and Medicaid programs, claims for payment that are false or fraudulent
or making a false statement to avoid, decrease or conceal an obligation to pay money to the
federal government;

(cid:129) the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, imposes

criminal and civil liability for executing a scheme to defraud any healthcare benefit program  and
also created federal criminal laws that prohibit knowingly  and willfully falsifying, concealing or
covering up a material fact or making any materially false statements in connection with the
delivery of or payment for healthcare  benefits, items or services;

(cid:129) HIPAA, as amended by the Health Information Technology  for Economic and Clinical Health

Act, or HITECH, also imposes obligations, including mandatory contractual terms, with  respect

to safeguarding the privacy, security and transmission of individually identifiable health

information;

(cid:129) the federal physician sunshine requirements under the Affordable Care Act requires

manufacturers of drugs, devices, biologics and medical supplies to report annually to HHS

information related to payments and other transfers of value to physicians, other healthcare

providers, and teaching hospitals, and  ownership and investment interests held by physicians and

other healthcare providers and their immediate family members and applicable group purchasing

organizations; and

(cid:129) analogous state and foreign laws and regulations, such as state anti-kickback and false claims

laws, may apply to sales or marketing arrangements and claims involving healthcare items or

services reimbursed by non-governmental third-party payors, including private insurers; some

state laws require pharmaceutical companies to comply with the pharmaceutical industry’s

voluntary compliance guidelines and the relevant compliance guidance promulgated  by  the

federal government and may require drug manufacturers to report information related  to

payments and other transfers of value to physicians and other healthcare providers or marketing

expenditures; and state and foreign laws govern the privacy and security of health information in

specified circumstances, many of which  differ from each other in significant ways and  often are

not preempted by HIPAA, thus complicating compliance efforts.

Efforts to ensure that our business arrangements with third parties  will comply with  applicable

healthcare laws and regulations will involve substantial costs. It is  possible that governmental authorities

will conclude that our business practices may not comply with current or future statutes, regulations or

case law involving applicable fraud and abuse or other healthcare laws and regulations. If our

operations are found to be in violation of any of these laws or any other governmental regulations that

may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages,

fines, imprisonment, exclusion from government funded healthcare programs, such as Medicare and

Medicaid, and the curtailment or restructuring of our operations. If any  physicians or other  healthcare

providers or entities with whom we expect to do business are found  to  not be in compliance with

applicable laws, they may be subject to criminal, civil or administrative  sanctions, including exclusions

from government funded healthcare programs.

Our employees may engage in misconduct or other improper activities, including noncompliance with

regulatory standards and requirements, which could cause significant liability  for us and harm our reputation.

We are exposed to the risk of employee fraud or other misconduct, including intentional failures to

comply with FDA regulations or similar regulations of comparable foreign regulatory authorities,

provide accurate information to the FDA or comparable  foreign regulatory authorities, comply with

manufacturing standards we have established, comply with federal and state healthcare fraud and abuse

laws and regulations and similar laws and regulations established and enforced by comparable foreign

regulatory authorities, report financial  information or data accurately or disclose unauthorized  activities

to us. Employee misconduct could also involve the improper use of information obtained in the course

of clinical trials, which could result in regulatory sanctions and serious harm to our reputation.  We have

adopted a code of conduct for our directors, officers and employees, or the Code of Conduct, but it is

not always possible to identify and deter employee misconduct, and the precautions  we take to detect

and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in

protecting us from governmental investigations or other actions or lawsuits stemming from  a failure to

be in compliance with such laws or regulations. If any  such actions are instituted  against us, and we are

not successful in defending ourselves or  asserting our rights, those  actions could have a significant

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impact on our business and results of operations,  including the  imposition of significant fines or other
sanctions.

We face substantial competition, which may result in others discovering, developing or commercializing
products before or more successfully than we do.

The development and commercialization of  new drug products is highly competitive. We face
competition with respect to our current product candidates,  rigosertib, briciclib  and recilisib, and will
face competition with respect to any  product candidates that we may seek to develop or commercialize
in the future, from major pharmaceutical companies, specialty pharmaceutical companies and
biotechnology companies worldwide. There are a number of large pharmaceutical and biotechnology
companies that currently market and sell  products or are pursuing the development of products for the
treatment of the disease indications for which we are developing our product  candidates. Some of these
competitive products and therapies are  based on scientific approaches that are the same as or similar to
our approach, and others are based on entirely different approaches.  Potential competitors also include
academic institutions, government agencies and other public and private research organizations that
conduct  research, seek patent protection and establish collaborative arrangements for research,
development, manufacturing and commercialization.

Our product candidates are being developed for cancer therapeutics and radiation protection.
There are a variety of available therapies and supportive care products marketed for cancer patients. In
many cases, these drugs are administered in combination to enhance efficacy or to reduce side effects.
Some of these drugs are branded and subject to patent protection,  and others are available on  a
generic basis. Many of these approved drugs are well established therapies or products and are widely
accepted by physicians, patients and third-party payors. Insurers and other third-party payors  may also
encourage the use of generic products. This may make it difficult for us to achieve market acceptance
at desired levels in a timely manner to ensure  viability of our business.

More established companies may have a competitive advantage over us due to their  greater size,

(cid:129) withdrawal of clinical trial participants;

cash flows and institutional experience. Compared to us, many of our  competitors may have
significantly greater financial, technical and human resources.

As a result of these factors, our competitors may obtain regulatory approval of their products
before we are able to obtain patent protection or other  intellectual property rights which will  limit our
ability to develop or commercialize our product candidates. Our competitors may also develop drugs
that are safer, more effective, more widely  used  and cheaper than ours, and may also be more
successful than us in manufacturing and marketing their products. These appreciable advantages could
render our product candidates obsolete or non-competitive before we can recover the expenses of
development and commercialization.

Mergers and acquisitions in the pharmaceutical and biotechnology industries  may result in even
more resources being concentrated among a smaller number of  our competitors. Smaller  and other
early-stage companies may also prove to be significant competitors, particularly through collaborative
arrangements with large and established companies. These third parties compete with us in recruiting
and retaining qualified scientific, management and  commercial personnel, establishing clinical trial sites
and patient registration for clinical trials,  as well as in acquiring technologies complementary to, or
necessary for, our programs.

If we breach the license agreements or fail to negotiate new agreements pertaining to our product candidates,
we could lose the ability to continue the  development  and potential commercialization of  these product
candidates.

In January 1999, we entered into an agreement with  Temple, as subsequently amended, to obtain
an exclusive, world-wide license to make, have made,  use, sell, offer  for  sale and import several classes

We are highly dependent upon Ramesh Kumar, Ph.D., President and Chief Executive Officer;

Thomas McKearn, M.D., Ph.D., President, Research  and Development; Manoj Maniar, Ph.D., Senior

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of novel compounds, including all three of our clinical-stage product candidates.  In May 2010,  we

entered into an agreement with Mount Sinai School of Medicine, as subsequently amended, giving us

the option to exclusively negotiate licenses  related to certain compounds. If we fail to meet our

obligations under these license agreements or if we fail to negotiate future license agreements, our

rights under the licenses could be terminated, and upon the effective date of such termination, our

right to use the licensed technology would terminate. While we would expect to exercise all rights and

remedies available to us, including attempting to cure any breach by us, and otherwise seek  to  preserve

our rights under the patents and other technology licensed to us,  we may not be able to do so in a

timely manner, at an acceptable cost or at all. Any uncured, material breach under the  license

agreement could result in our loss of exclusive rights and may lead to a complete termination of our

product development and any commercialization efforts for the applicable product  candidates.

Product liability lawsuits against us could  cause us to incur substantial liabilities and to limit

commercialization of any products that we may develop.

We face an inherent risk of product liability exposure related to the testing of our product

candidates in human clinical trials and will face an even greater  risk if we commercially sell  any

products that we may develop. Product liability claims may be brought against us by subjects enrolled in

our clinical trials, patients, healthcare providers or others using, administering or selling our products.

If we cannot successfully defend ourselves against claims  that our product candidates or products

caused injuries, we could incur substantial liabilities. Regardless of merit or eventual outcome, liability

claims may result in:

(cid:129) decreased demand for any product candidates or products that we may develop;

(cid:129) termination of clinical trial sites or entire trial programs;

(cid:129) injury to our reputation and significant negative  media attention;

(cid:129) significant costs to defend the related litigation;

(cid:129) substantial monetary awards to trial subjects or patients;

(cid:129) loss of revenue;

(cid:129) diversion of management and scientific resources from our business operations; and

(cid:129) the inability to commercialize any products that  we may develop.

We currently hold $10.0 million in product liability insurance coverage in the aggregate, which may

not be adequate to cover all liabilities that we may incur. Insurance coverage is increasingly expensive.

We may not be able to maintain insurance coverage at a reasonable cost or in an amount adequate to

satisfy any liability that may arise. We intend  to  expand our insurance coverage for products to include

the sale of commercial products if we obtain marketing approval for our product candidates in

development, but we may be unable to obtain commercially reasonable product liability insurance  for

any products approved for marketing. Large judgments have been awarded in class action lawsuits

based on drugs that had unanticipated  side effects. A successful product liability claim or series of

claims brought against us, particularly if judgments exceed our  insurance coverage,  could  decrease our

cash and adversely affect our business.

Our future success depends on our ability to retain our executive officers and to attract, retain and motivate

qualified personnel.

Vice President, Product Development; Steven Fruchtman, M. D.,  Chief Medical Officer and Senior
Vice President, Research and Development  and Ajay Bansal, Chief Financial Officer.  Although we
have employment agreements with the persons named above, these agreements are  at-will and do not
prevent such persons from terminating their employment with us at any  time. We do not maintain ‘‘key
person’’ insurance for any of our executives or other employees, other than our President and Chief
Executive Officer. The loss of the services of any of these persons could impede the achievement  of
our research, development and commercialization objectives.

If we are unable to attract and retain highly  qualified employees, we may not be able to grow effectively.

Our future and success depend on our ability to retain,  manage and motivate our employees.
During the first half of 2015, we are reducing our headcount in  order to conserve cash. These activities,
along with any other actions we are taking or may take to conserve  cash, may make it more difficult to
retain key employees. The loss of any member of our senior management  team or the inability to hire
or retain experienced management personnel  could compromise our ability to execute our business plan
and harm our operating results. Because of the specialized scientific and managerial nature of our
business, we rely heavily on our ability to attract and retain  qualified scientific, technical and
managerial personnel. The competition  for qualified personnel in the pharmaceutical field is intense
and as a result, we may be unable to continue to retain qualified personnel necessary for the
development of our business. In addition, if  our development plans are successful, we will need
additional managerial, operational, sales, marketing, financial and other resources, and may find it
more difficult to attract such qualified personnel.

We may engage in future acquisitions that could disrupt  our business, cause dilution to our stockholders and
harm our financial condition and operating results.

While we currently have no specific plans to acquire any other businesses,  we may,  in the future,
make acquisitions of, or investments in, companies that we believe have products or capabilities that
are a strategic or commercial fit with our  current product  candidates and business or otherwise offer
opportunities for our company. In connection with these acquisitions or  investments, we  may:

(cid:129) issue stock that would dilute our existing stockholders’ percentage of ownership;

(cid:129) incur debt and assume liabilities; and

(cid:129) incur amortization expenses related to intangible  assets or incur large and  immediate write-offs.

We may not be able to complete acquisitions on favorable  terms, if at all. If we do complete an
acquisition, we cannot assure you that it  will ultimately strengthen our competitive position or  that it
will be viewed positively by customers, financial  markets or  investors. Furthermore, future acquisitions
could pose numerous additional risks to our operations, including:

(cid:129) problems integrating the purchased business, products or technologies;

(cid:129) increases to our expenses;

(cid:129) the failure to discover undisclosed liabilities of the acquired asset or company;

(cid:129) diversion of management’s attention  from their day-to-day responsibilities;

(cid:129) harm to our operating results or financial  condition;

(cid:129) entrance into markets in which we have limited  or no  prior experience; and

(cid:129) potential loss of key employees, particularly those of the acquired entity.

We may not be able to complete any acquisitions or effectively integrate  the operations, products

or personnel gained through any such acquisition.

Our business and operations would suffer in the event of computer  system failures.

Despite the implementation of security measures, our internal computer systems, and those of our

CROs and other third parties on which we rely, are vulnerable to damage from computer viruses,

unauthorized access, natural disasters, fire, terrorism, war and telecommunication and electrical

failures. If such an event were to occur and cause interruptions in our operations,  it could result in a

material disruption of our drug development programs. For example, the  loss of clinical trial data from

completed, ongoing or planned clinical trials could  result in delays  in our regulatory approval efforts

and significantly increase our costs to recover or reproduce the data. To the extent that any disruption

or security breach results in a loss of or damage to our data  or applications, or inappropriate disclosure

of confidential or proprietary information, we could incur liability and the further development of our

product candidates could be delayed.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to

fines or penalties or incur costs that could have a material adverse  effect on the success of our business.

We are subject to numerous environmental, health and safety laws and regulations, including  those

governing laboratory procedures and the handling, use, storage, treatment and disposal of hazardous

materials and wastes. Our operations involve the use of hazardous and flammable materials, including

chemicals and biological materials. Our  operations also produce hazardous waste products. We

generally contract with third parties for the disposal  of  these materials and wastes. We cannot eliminate

the risk of contamination or injury from these materials. In the event of contamination or injury

resulting from our use of hazardous materials, we could be held liable for any resulting damages, and

any liability could exceed our resources.  We also could incur significant costs  associated with civil  or

criminal fines and penalties.

Although we maintain workers’ compensation  insurance to cover us for costs and expenses we may

incur due to injuries to our employees resulting from the use of hazardous materials, this insurance

may not provide adequate coverage against potential liabilities. We do not maintain  insurance for

environmental liability or toxic tort claims that may be asserted against us in connection with our

storage or disposal of biological or hazardous materials.

In addition, we may incur substantial  costs in order to comply with current or future

environmental, health and safety laws and regulations. These current or future laws and regulations

may impair our research, development  or production efforts. Failure to comply with these laws and

regulations also may result in substantial fines,  penalties or other sanctions.

Business disruptions could seriously harm our  future revenues and financial condition and increase our costs

and expenses.

Our operations could be subject to earthquakes, power shortages, telecommunications failures,

water shortages, floods, hurricanes, typhoons, fires, extreme  weather conditions, medical epidemics and

other natural or manmade disasters or business interruptions, for which we are predominantly

self-insured. The occurrence of any of these business disruptions could seriously harm our operations

and financial condition and increase our costs  and expenses. We rely on third-party manufacturers to

produce our product candidates. Our ability to obtain  clinical supplies of product candidates  could  be

disrupted if the operations of these suppliers is affected by a man-made or natural disaster  or other

business interruption. The ultimate impact on  us, our significant suppliers and our  general

infrastructure of being consolidated in certain geographical areas is unknown, but our operations and

financial condition could suffer in the event of a major earthquake, fire or other natural disaster.

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We are relying on the FDA’s ‘‘Animal Efficacy Rule’’ to demonstrate efficacy of recilisib, which could result in
delays or failure at any stage of recilisib’s development process, increase our development costs and adversely
affect the commercial prospects  of recilisib.

Because humans are not normally exposed to radiation and it would  be  unethical to expose
humans to such, effectiveness of recilisib cannot be demonstrated in humans, but instead, under the
FDA’s ‘‘Animal Efficacy Rule,’’ can be demonstrated,  in part,  by utilizing  animal models. This effect has
to be demonstrated in more than one  animal species expected to be predictive of  a response in
humans, but an effect in a single animal species  may be acceptable if that animal model is sufficiently
well-characterized for predicting a response in humans. The animal study endpoint must be clearly
related to the desired benefit in humans and  the information obtained from animal studies  must allow
selection of an effective dose in humans. Safety may be demonstrated  in human studies.

We may not be able to sufficiently demonstrate the animal correlation to the satisfaction of the
FDA, as these correlates are difficult  to  establish and are often unclear. The FDA may decide  that our
data are insufficient for approval and require additional preclinical, clinical or other studies, refuse to
approve recilisib, or place restrictions on our ability to commercialize recilisib. Furthermore, other
countries, at this time, have not established criteria for review and approval of these types of products
outside their normal review process. There is no ‘‘Animal Efficacy Rule’’ equivalent  in countries other
than the United States, and consequently  there can  be  no assurance that we  will be able to make a
submission for marketing approval in foreign countries based on such animal data.

Risks Related to Our Dependence on Third Parties

We rely on third parties to conduct our preclinical and clinical trials.  If these third parties do not successfully
carry out their contractual duties or meet  expected deadlines, we may not be able to obtain regulatory
approval for or commercialize our product candidates.

We have relied upon and plan to continue to rely upon third-party CROs to monitor and manage

data for our ongoing preclinical and clinical programs. We rely on these parties for execution of our
preclinical and clinical trials, and we control only some aspects of their activities. Nevertheless, we are
responsible for ensuring that each of our studies is conducted in accordance with the applicable
protocol and legal, regulatory and scientific standards, and our reliance on the CROs does not relieve
us of our regulatory responsibilities. We also rely on third parties to assist  in conducting our preclinical
studies in accordance with Good Laboratory  Practices, or GLP, and the Animal Welfare Act
requirements. We and our CROs are required to comply with federal regulations and current Good
Clinical Practices, or GCP, which are  international standards meant to protect the rights and health of
patients that are enforced by the FDA, the Competent Authorities of the Member States of the
European Economic Area, or EEA, and comparable foreign regulatory authorities for all of our
products in clinical development. Regulatory authorities enforce GCP through periodic inspections of
trial sponsors, principal investigators and trial sites. If we or any of our CROs fail to comply with
applicable GCP, the clinical data generated  in our clinical trials may be deemed unreliable and the
FDA or comparable foreign regulatory authorities  may require us to perform additional  clinical trials
before approving our marketing applications. We cannot  assure you that upon inspection by a given
regulatory authority, such regulatory  authority  will determine that any of our clinical trials comply with
GCP requirements. In addition, our clinical  trials must be conducted with product produced under
cGMP requirements. Failure to comply with these regulations may require us  to  repeat preclinical and
clinical trials, which would delay the regulatory approval process.

Our CROs are not our employees, and except for  remedies available to us under our agreements

with such CROs, we cannot control whether or  not  they devote sufficient time and resources to our
ongoing clinical, nonclinical and preclinical  programs. If CROs do not successfully carry out their
contractual duties or obligations or meet expected deadlines or if the quality or accuracy  of the clinical

data they obtain is compromised due to the failure to adhere to our clinical protocols, regulatory

requirements or for other reasons, our clinical trials may be extended, delayed or terminated  and we

may not be able to obtain regulatory approval for or successfully commercialize our product  candidates.

As a result, our results of operations and the commercial prospects for our product candidates would

be harmed, our costs could increase and our ability to generate revenues could be delayed.

Because we have relied on third parties, our internal  capacity to perform these functions is limited.

Outsourcing these functions involves risk that third parties may not perform to our standards, may not

produce results in  a timely manner or may fail to perform at all. In  addition, the use of third-party

service providers requires us to disclose  our proprietary information to these  parties, which could

increase the risk that this information will be misappropriated. We currently have a small number of

employees, which limits the internal resources we have available to identify and monitor our third-party

providers. To the extent we are unable to identify and successfully manage the performance of third-

party service providers in the future, our business  may be adversely affected. Though we carefully

manage our relationships with our CROs, there can be no assurance that we will not encounter

challenges or delays in the future or that these delays or challenges  will not have a material adverse

impact on our business, financial condition and prospects.

If we lose our relationships with CROs, our drug development efforts could be delayed.

We rely on third-party vendors and CROs for preclinical  studies and clinical trials related to our

drug development efforts. Switching or adding additional CROs would involve  additional cost and

requires management time and focus. Our  CROs have the right to terminate their agreements with us

in the event of an uncured material breach. In addition, some of our CROs have an ability to terminate

their respective agreements with us if  it can be reasonably demonstrated that the safety  of the subjects

participating in our clinical trials warrants such  termination, if we make a general assignment for the

benefit of our creditors or if we are liquidated. Identifying, qualifying and managing performance of

third-party service providers can be difficult, time consuming and cause delays in our development

programs. In addition, there is a natural transition period when a new CRO commences work and the

new CRO may not provide the same type or level of services as the original provider. If any  of our

relationships with our third-party CROs terminate, we may not be able  to enter into arrangements with

alternative CROs or to do so on commercially reasonable terms.

We have limited experience manufacturing  our product candidates on a large clinical or commercial scale and

have no manufacturing facility. We are dependent on third-party  manufacturers for the manufacture of our

most advanced product candidate as well as on third parties for our supply chain, and if we experience

problems with any third parties, the manufacturing of our product candidates or products could be delayed.

We do not own or operate facilities for the manufacture of our product candidates. We currently

have no plans to build our own clinical or commercial scale manufacturing capabilities. We currently

rely on a single source contract manufacturing organization, or CMO, for the chemical manufacture of

active pharmaceutical ingredient for  rigosertib, another CMO for the production of  the rigosertib

intravenous formulation, and a third CMO for  the production of the rigosertib oral formulation for

Phase 3 clinical trials. To meet our projected needs for clinical supplies to  support our activities

through regulatory approval and commercial manufacturing, the CMOs with whom we currently work

will need to increase the scale of production. We may need to identify additional CMOs  for continued

production of supply for our product candidates. In addition, regulatory authorities enforce cGMP

through periodic inspections of active pharmaceutical  ingredient, or API and drug product

manufacturing sites, quality control contract laboratories and  distribution centers. If we or our  CMO

fail to comply with applicable cGMP, the manufacturing data generated and subsequent API lots and

drug product batches in our supply chain may be deemed unreliable and the FDA or comparable

foreign regulatory authorities may require us to perform additional API and drug product

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manufacturing before approving our marketing applications. In 2013,  we began preparing a second
CMO for potential manufacture of API and incurred significant expense to do so. During the first
quarter of 2015, we suspended the original CMO for  manufacture of the  rigosertib intravenous
formulation for quality related reasons, leaving us again with a single source of manufacture for this
formulation. We have not yet identified alternate suppliers in the event the current CMOs we utilize
are unable to scale production, or if we  otherwise experience any problems with them. Although
alternative third-party suppliers with the necessary manufacturing and regulatory expertise and facilities
exist, as  we have experienced with respect to our existing CMOs, it could be expensive and take a
significant amount of time to arrange for alternative suppliers. If we are unable to arrange for
alternative third-party manufacturing sources, or to do so on  commercially reasonable terms or in a
timely manner, we may not be able to complete development of our product candidates, or market or
distribute them.

Reliance on third-party manufacturers entails risks to which we would  not be subject if we

manufactured product candidates or products ourselves, including reliance on  the third party for
regulatory compliance and quality assurance, the possibility of breach of the manufacturing  agreement
by the third party because of factors  beyond  our control, including a failure to synthesize and
manufacture our product candidates or any products we may eventually commercialize in accordance
with our specifications, and the possibility of termination or nonrenewal of the agreement by the third
party, based on its own business priorities, at a time that is costly  or damaging to us. In addition, the
FDA and other regulatory authorities require that our product candidates and any products  that we
may eventually commercialize be manufactured according  to  cGMP and similar foreign standards. Any
failure by our third-party manufacturers to comply with cGMP or  failure to scale up manufacturing
processes, including any failure to deliver sufficient quantities of product candidates in a timely manner,
could lead to a delay in, or failure to obtain, regulatory  approval of  any of our product candidates. In
addition, such failure could be the basis for the FDA to issue a warning letter, withdraw approvals for
product candidates previously granted to us, or take other regulatory or legal action, including recall or
seizure of outside supplies of  the product candidate, total or partial suspension of production,
suspension of ongoing clinical trials, refusal to approve pending applications or supplemental
applications, detention or product, refusal to permit the import or export of products, injunction, or
imposing civil and criminal penalties.

Any significant disruption in our supplier relationships  could harm our business. Any significant

delay in the supply of a product candidate or its  key materials for an ongoing  clinical study could
considerably delay completion of our clinical studies,  product testing and potential regulatory  approval
of our product candidates. If our manufacturers or  we are unable to purchase these key materials after
regulatory approval has been obtained for our product candidates, the  commercial launch of our
product candidates would be delayed or  there would be a shortage in supply, which would impair our
ability to generate revenues from the sale of our product candidates.

We have entered into collaboration agreements with SymBio Pharmaceuticals Limited and Baxter
Healthcare SA for rigosertib development and commercialization in certain territories and we may elect to
enter into additional licensing or collaboration agreements  to partner rigosertib  in territories  currently retained
by us. Our dependence on such relationships  may adversely affect our  business.

Because we have limited resources, we  seek to enter into, and in  the past we have entered into,
collaboration agreements with other pharmaceutical companies and may elect to enter  into more of
these agreements in the future. In July 2011, we entered into a license agreement with SymBio
Pharmaceuticals Limited, or SymBio, as subsequently amended, granting an exclusive, royalty-bearing
license for the development and commercialization of rigosertib in Japan and Korea. In September
2012, we entered into a development and license agreement  with Baxter Healthcare SA, or Baxter, a
subsidiary of Baxter International Inc.,  granting an exclusive, royalty-bearing license for the

development and commercialization of rigosertib in specified countries comprising most of Europe. In

December 2012, we also entered into a collaboration  agreement with GVK Biosciences Private Limited

for the further development of two of our preclinical oncology programs. Any failure by our partners  to

perform their obligations or any decision by our partners to terminate these agreements would

terminate the funding we may receive under  the relevant collaboration  agreement and could negatively

impact our ability to successfully develop, obtain regulatory approvals  for and commercialize the

applicable product candidate. In addition, any decision by our partners to terminate these agreements

could also damage our reputation and negatively impact our ability to obtain financing from other

sources.

We may not achieve the milestones set forth  in our collaboration  agreements, or may disagree with

our collaboration partners as to whether certain milestones have been met. Any such failure or

disagreement would negatively impact our potential funding sources  if we are unable  to  receive the

contemplated milestone payments.

Our commercialization strategy for rigosertib in territories currently retained by us may depend on

our ability to enter into agreements with collaborators to obtain assistance and funding for  the

development and potential commercialization of rigosertib in those territories. Despite  our efforts, we

may be unable to secure additional collaborative licensing or other arrangements  that are necessary for

us to further develop and commercialize rigosertib. Supporting diligence activities conducted by

potential collaborators and negotiating the financial and other terms of a collaboration agreement are

long and complex processes with uncertain results. Even if  we are successful in entering into  one or

more collaboration agreements, collaborations may involve greater uncertainty for us, as we have less

control over certain aspects of our collaborative programs  than we do over our proprietary

development and commercialization programs. We may determine that continuing a collaboration under

the terms provided is not in our best interest, and  we may terminate the collaboration. Our

collaborators could delay or terminate their agreements, and as a result rigosertib may never be

successfully commercialized.

Further, our future collaborators may develop alternative products or pursue alternative

technologies either on their own or in collaboration with others, including our competitors, and the

priorities or focus of our collaborators may shift such that  rigosertib receives less attention or resources

than we would like, or they may be terminated altogether. Any such actions by our collaborators may

adversely affect our business prospects  and ability to earn revenues. In addition, we could have disputes

with our current or future collaborators, such as the interpretation of terms in our agreements. Any

such disagreements could lead to delays in the development or  commercialization of rigosertib or could

result in time-consuming and expensive litigation or arbitration, which may not be resolved in our

favor.

With respect to our programs that are  currently not the subject  of  collaborations, we may enter

into agreements with collaborators to share in the burden of conducting clinical trials, manufacturing

and marketing these product candidates. In  addition, our ability to develop additional proprietary

compounds may depend on our ability to establish and maintain licensing arrangements or other

collaborative arrangements with the holders  of proprietary  rights to such compounds.  We may not be

able to establish such arrangements on favorable  terms or at all, and our future collaborative

arrangements may not be successful.

Risks Related to Our Intellectual Property

If we are unable to protect our intellectual property rights, our competitive  position could be  harmed.

We depend on our ability to protect our proprietary technology. We rely on trade secret, patent,

copyright and trademark laws, and confidentiality, licensing and other agreements with employees and

third parties, all of which offer only limited protection. Our commercial success will depend  in large

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part on our ability to obtain and maintain patent protection in the United States and other countries
with respect to our proprietary technology  and  products. Where we have  the right to do so under  our
license agreements, we seek to protect our proprietary position by filing patent applications in the
United States and abroad related to our novel technologies and products  that are important to our
business. The patent positions of biotechnology and pharmaceutical  companies generally are highly
uncertain, involve complex legal and factual questions  and have  in recent years been the  subject of
much litigation. As a result, the issuance, scope, validity, enforceability and commercial  value of our
patents, including those patent rights licensed to us by third  parties, are highly uncertain.

The steps we have taken to protect our proprietary rights may not be adequate to preclude
misappropriation of our proprietary information or infringement  of  our intellectual property rights,
both inside and outside the United States. The rights already granted  under any of our currently issued
patents and those that may be granted  under future issued patents may not provide us with the
proprietary protection or competitive  advantages we are seeking. If we are unable to obtain and
maintain patent protection for our technology and products, or  if the scope of the patent protection
obtained is not sufficient, our competitors  could develop and  commercialize  technology and products
similar or superior to ours, and our ability to successfully commercialize our technology and products
may be adversely affected.

With respect to patent rights, we do not know whether  any of the pending  patent applications for

any of our licensed compounds will result in the issuance of patents  that protect our technology or
products, or if any of our issued patents will effectively prevent others from commercializing
competitive technologies and products. Our pending  applications cannot be enforced against third
parties practicing the technology claimed in such applications unless and until a patent issues from such
applications. Further, the examination process may require us or our licensor to narrow the claims for
our pending patent applications, which may limit the  scope of patent protection that may  be  obtained if
these applications issue. Because the  issuance  of a patent is not conclusive as to its inventorship, scope,
validity or enforceability, issued patents that we own or  have licensed from  third parties may be
challenged in the courts or patent offices in the  United States and abroad. Such challenges may  result
in the loss of patent protection, the narrowing of claims in such patents or  the invalidity or
unenforceability of such patents, which  could limit  our ability to stop others  from using or
commercializing similar or identical technology and products, or limit  the  duration of the  patent
protection for our technology and products. Protecting against the unauthorized use of our patented
technology, trademarks and other intellectual property rights is expensive, difficult and may in some
cases not be possible. In some cases,  it may  be  difficult or impossible to detect third-party infringement
or misappropriation of our intellectual property rights, even in relation to issued patent claims, and
proving any such infringement may be even more difficult.

We could be required to incur significant expenses to perfect our intellectual property rights, and our
intellectual property rights may be inadequate to protect  our competitive position.

The patent prosecution process is expensive and time-consuming, and we or our licensors may not
be able to file and prosecute all necessary or desirable patent applications at a reasonable cost or in a
timely manner. It is also possible that we or our licensors will fail to identify patentable aspects of
inventions made in the course of our development and  commercialization activities before it is too late
to obtain patent protection on them. Further, given the  amount of time  required for the development,
testing and regulatory review of new product  candidates, patents protecting such candidates might
expire before or shortly after such candidates are  commercialized. We expect  to seek extensions of
patent terms in the United States and, if available, in other countries where we  are prosecuting patents.
In the United States, the Drug Price Competition and Patent Term Restoration Act of 1984  permits  a
patent term extension of up to five years beyond the expiration of the patent.  However,  the applicable
authorities, including the FDA in the United  States, and any  equivalent regulatory authority in other

countries, may not agree with our assessment of whether such extensions  are available, and may refuse

to grant extensions to our patents, or may grant more limited extensions than  we request. If this occurs,

our competitors may be able to take advantage of our investment in development and clinical trials by

referencing our clinical and preclinical data and launch their product earlier than might otherwise be

the case. Changes in either the patent laws or interpretation of the patent laws in the United States

and other countries may diminish the value of our patents or narrow the scope of our patent

protection. The laws of foreign countries may not protect our rights to the same extent as the laws of

the United States, and these foreign laws may also be subject to change. For example,  methods of

treatment and manufacturing processes may not be patentable in certain jurisdictions. Publications of

discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in

the United States and other jurisdictions are typically not published until 18 months after filing or in

some cases not at all. Therefore we cannot be certain that we or our licensors were the first to make

the inventions claimed in our owned or  licensed patents or pending  patent applications, or that we or

our licensors were the first to file for patent protection of such inventions.

Recent patent reform legislation could increase the uncertainties and costs surrounding the prosecution of our

patent applications and the enforcement or defense of our issued patents.

On September 16, 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was

signed into law. The Leahy-Smith Act includes a number of significant changes to U.S. patent law.

These include provisions that affect the way  patent applications will be prosecuted and may also affect

patent litigation. In particular, under the Leahy-Smith Act, the United States transitioned in March

2013 to a ‘‘first to file’’ system in which the first inventor to file a patent application will be entitled to

the patent. Third parties are allowed to submit prior art before the issuance of a patent by the U.S.

Patent and Trademark Office, or the USPTO, and may become involved in opposition, derivation,

reexamination, inter-partes review, post grant review or interference  proceedings challenging our patent

rights or the patent rights of others. An adverse determination in any such submission, proceeding or

litigation could reduce the scope of, or invalidate, our patent rights, which could adversely affect our

competitive position.

Many of the substantive changes to patent law associated with the Leahy-Smith Act, and in

particular, the first to file provisions, did not become  effective  until March 16, 2013. Currently, it is not

clear what, if any, impact the Leahy-Smith Act will have on the operation of our business. However,

the Leahy-Smith Act and its implementation could increase the uncertainties and costs surrounding the

prosecution of our patent applications and the enforcement or defense  of our issued patents.

Obtaining and maintaining our patent protection depends on compliance with various procedural, document

submissions, fee payment and other requirements imposed  by governmental  patent  agencies, and our patent

protection could be reduced or eliminated  for non-compliance with these requirements.

Periodic maintenance fees on any issued patent are due to be paid to the USPTO and foreign

patent agencies in several stages over the lifetime of the patent. The USPTO and various foreign

governmental patent agencies require compliance with a number of procedural, documentary, fee

payment and other similar provisions during the patent application process. While an inadvertent lapse

can in many cases be cured by payment of  a late fee or by other means in accordance  with the

applicable rules, there are situations in which noncompliance can result in abandonment or  lapse of the

patent or patent application, resulting in partial or complete loss of patent rights in  the relevant

jurisdiction. Non-compliance events that  could result in abandonment or lapse of a patent or patent

application include, but are not limited to, failure to respond to official actions  within prescribed time

limits, non-payment of fees and failure to properly legalize and submit formal documents.  If we or our

licensors fail to maintain the patents and patent applications covering our product candidates, our

competitive position would be adversely affected.

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We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive,
time consuming and unsuccessful.

Competitors may infringe our patents or misappropriate or  otherwise violate our intellectual
property rights. To counter infringement or unauthorized use, litigation  may be necessary in the future
to enforce or defend our intellectual property rights, to protect our trade secrets or to determine the
validity and scope of our own intellectual property rights  or the proprietary rights of others. This can
be expensive and time consuming. Many of our  current and potential competitors have the ability to
dedicate substantially greater resources to defend  their  intellectual property rights than we can.
Accordingly, despite our efforts, we may not be able  to  prevent third parties  from infringing upon or
misappropriating our intellectual property. Litigation  could result in  substantial costs and  diversion of
management resources. In addition, in an infringement proceeding, a court may decide that a patent
owned by or licensed to us is invalid or unenforceable, or may refuse to stop the other party from using
the technology at issue on the grounds that our patents do not cover the technology in question. An
adverse result in any litigation proceeding could put one or more of our patents at risk of being
invalidated, held unenforceable or interpreted narrowly.  Furthermore, because of the substantial
amount of discovery required in connection with intellectual property litigation, there is a risk that
some of our confidential information could be compromised by disclosure during this type of litigation.

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights,
the outcome of which would be uncertain and could harm our business.

Our commercial success depends upon  our ability and the ability of our collaborators to develop,
manufacture, market and sell our product candidates, and to use our proprietary technologies without
infringing the proprietary rights of third parties. We may  become party  to,  or threatened with, future
adversarial proceedings or litigation regarding intellectual property rights  with respect  to  our products
and technology, including interference or derivation proceedings before the USPTO. Third parties may
assert infringement claims against us based on existing patents or patents that may be granted in the
future. If we are found to infringe a third party’s intellectual property rights, we could be required to
obtain a license from such third party  to  continue developing and commercializing our  products and
technology. However, we may not be able to obtain any required license on commercially  reasonable
terms or at all. Even if we are able to  obtain a license, it may  be  non-exclusive, thereby  giving our
competitors access to the same technologies licensed to us. We could be forced, including by court
order, to cease commercializing the infringing technology or product. In addition, in any such
proceeding or litigation, we could be found liable for monetary damages. A finding of infringement
could prevent us from commercializing our product candidates or force  us to cease some of our
business operations, which could materially harm our business.  Any claims by third  parties that we have
misappropriated their confidential information or trade secrets  could have a similar negative impact on
our business.

We may be subject to claims that our employees  have wrongfully used or disclosed alleged trade secrets of  their
former employers.

Many of our employees, including our senior management, were previously employed at other
biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some
of these employees, including each member of our senior management,  executed  proprietary rights,
non-disclosure and non-competition agreements in connection with such previous employment.
Although we try to ensure that our employees do not use the proprietary information or know-how  of
others in their work for us, we may be subject to claims  that we or these employees have used or
disclosed intellectual property, including trade secrets or other proprietary information, of any such
employee’s former employer. We are not aware of  any threatened or pending claims related to these
matters or concerning the agreements with our  senior management, but in the future litigation may be

necessary to defend against such claims. If we fail in defending any such claims, in addition to paying

monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are

successful in defending against such claims, litigation could result  in substantial costs and be a

distraction to management.

their normal responsibilities.

Intellectual property disputes could cause us to spend substantial resources and distract our personnel from

Even if resolved in our favor, litigation  or other legal proceedings relating to intellectual property

claims may cause us to incur significant expenses, and  could distract our technical and management

personnel from their normal responsibilities. In addition, there could be public  announcements of the

results of hearings, motions or other interim proceedings or developments and if securities analysts or

investors perceive these results to be negative, it could have a substantial adverse effect on the market

price of our common stock. Such litigation or proceedings could substantially increase our operating

losses and reduce the resources available for development activities or  any future sales, marketing or

distribution activities. We may not have sufficient financial or other resources to adequately conduct

such litigation or proceedings. Some of our competitors may be able to sustain the costs of such

litigation or proceedings more effectively than we  can because of their greater financial resources.

Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings

could compromise our ability to compete in the marketplace.

If we are unable to protect the confidentiality of our trade secrets,  our business and competitive position would

be harmed.

In addition to seeking patents for some of our technology and products,  we also rely on trade

secrets, including unpatented know-how, technology and other proprietary information, to maintain our

competitive position. We seek to protect these trade secrets, in part, by entering into non-disclosure

and confidentiality agreements with parties who have access to them, such as our employees, corporate

collaborators, outside scientific collaborators, CMOs,  consultants, advisors and other third parties. We

also generally enter into confidentiality and invention or patent assignment agreements with our

employees and consultants. Despite these efforts, any of these parties may breach the agreements and

disclose our proprietary information, including  our trade secrets, and we may not be able to obtain

adequate remedies for such breaches. Enforcing a  claim that a party illegally disclosed or

misappropriated a trade secret is difficult, expensive and time-consuming, and  the outcome is

unpredictable. In addition, some courts both within and outside the United States may  be  less willing

or unwilling to protect trade secrets. If any of our trade secrets were to be lawfully obtained or

independently developed by a competitor, we would have no right to prevent such competitor from

using that technology or information to compete with us, which could harm  our competitive position.

Although we expect all of our employees  to  assign their inventions to us, and all of our  employees,

consultants, advisors and any third parties who have  access to our proprietary know-how, information

or technology to enter into confidentiality agreements, we cannot provide any assurances that all such

agreements have been duly executed or that our trade secrets and other confidential proprietary

information will not be disclosed or that competitors will not otherwise gain access to our trade secrets

or independently develop substantially equivalent information and techniques. Additionally, if the  steps

taken to maintain our trade secrets are deemed inadequate, we may have insufficient recourse against

third parties for misappropriating the trade secret, In addition, others may independently  discover our

trade secrets and proprietary information. For  example, the FDA, as part  of its Transparency Initiative,

is currently considering whether to make  additional information publicly available  on a routine basis,

including information that we may consider to be trade secrets or other proprietary information, and it

is not clear at the present time how the FDA’s disclosure  policies may change in the future, if at all.

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We may not be able to protect our intellectual property rights throughout the world.

Risks Related to Ownership of Our Common Stock

Filing, prosecuting and defending patents on all of our product candidates throughout the world

would be prohibitively expensive. Competitors may use our  technologies in jurisdictions where we have
not obtained patent protection to develop their own products, and may export otherwise infringing
products to territories where we have patent protection, but where enforcement is not as strong as that
in the United States. These products  may compete with  our products in  jurisdictions where  we do not
have any issued patents and our patent claims or other intellectual property rights may not be effective
or sufficient to prevent them from so competing.

Many companies have encountered significant  problems in protecting and defending intellectual

property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain
developing countries, do not favor the enforcement of patents and other intellectual property
protection, particularly those relating to biopharmaceuticals, which could make it  difficult for  us to stop
the infringement of our patents or marketing of competing products in violation of our proprietary
rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in
substantial cost and divert our efforts and attention from other aspects of our business.

Intellectual property rights do not necessarily address all potential threats to our competitive advantage.

The degree of future protection afforded by our intellectual property rights is uncertain  because

intellectual property rights have limitations, and may not adequately protect our business, or permit us
to maintain our competitive advantage. The following examples are illustrative:

(cid:129) Others may be able to make compounds that are  the same as or similar to our product

candidates but that are not covered by the claims of the  patents that we own or have exclusively
licensed.

(cid:129) We or our licensors or any strategic partners might  not  have been  the first to make the

inventions covered by the issued patent or pending patent application that we  own or have
exclusively licensed.

(cid:129) We or our licensors or any strategic partners might  not  have been  the first to file patent

(cid:129) results of clinical trials of our product candidates or those of our competitors;

applications covering certain of our inventions.

(cid:129) Others may independently develop similar or alternative technologies or  duplicate any of our

technologies without infringing our intellectual  property  rights.

(cid:129) It is possible that our pending patent applications will not lead to issued patents.

(cid:129) Issued patents that we own or have exclusively  licensed may  not provide us with any competitive

advantages, or may be held invalid or unenforceable, as  a result  of legal challenges by our
competitors.

(cid:129) Our competitors might conduct research and development activities in the United States and

other countries that provide a safe harbor from patent  infringement claims for certain research
and development activities, as well as in  countries where we  do not  have patent rights and then
use the information learned from such activities to develop competitive products for  sale in our
major commercial markets.

(cid:129) We may not develop additional proprietary technologies that are patentable.

(cid:129) the results of our efforts to in-license or acquire additional product candidates or products;

(cid:129) The patents of others may have an adverse effect on our business.

(cid:129) actual or anticipated changes in estimates as to financial results, development timelines or

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The trading market in our common stock has been extremely limited and substantially  less liquid than the

average trading market for a stock quoted on the NASDAQ Global Select Market.

Since our initial listing on the NASDAQ Global Select Market on July 25, 2013, the trading

market in our common stock has been limited and substantially less liquid than the average trading

market for companies quoted on the NASDAQ Global Market. The quotation of our common stock on

the NASDAQ Global Select Market  does not assure that a meaningful, consistent and liquid trading

market currently exists. We cannot predict whether a more active market for our common stock will

develop in the future. An absence of an active trading market could adversely affect our stockholders’

ability to sell our common stock at current market  prices in short time  periods, or possibly at all.

Additionally, market visibility for our common stock may be limited and such lack of  visibility may have

a depressive effect on the market price for our common stock. As of December 31, 2014, approximately

42% of our outstanding shares of common stock was held by our officers, directors, beneficial owners

of 5% or more of our capital stock and their respective affiliates,  which adversely affects the liquidity

of the trading market for our common stock, in as much as federal securities laws restrict sales of our

shares by these stockholders. If our affiliates continue to hold their shares of common stock, there will

be limited trading volume in our common stock, which may make  it more difficult for investors to sell

their shares or increase the volatility of our stock price.

Our share price may be volatile, which could subject us to securities class action litigation and result in

substantial losses to our stockholders.

The trading price of our common stock is highly volatile and could be subject to wide fluctuations

in response to various factors, some of which are beyond our control. Since our initial listing on the

NASDAQ Global Select Market on July 25, 2013 through December 31, 2014, the price of  our

common stock on the NASDAQ Global Select Market has ranged from  $3.24 per share to $31.13 per

share. In addition to the factors discussed in this ‘‘Risk Factors’’ section and elsewhere in this Annual

Report, these factors include:

(cid:129) regulatory actions with respect to our products or our competitors’ products;

(cid:129) actual or anticipated changes in our growth rate  relative to our competitors;

(cid:129) announcements by us or our competitors of significant acquisitions, strategic partnerships, joint

ventures, collaborations or capital commitments;

(cid:129) the success of competitive products or technologies;

(cid:129) regulatory or legal developments in the  United States and other countries;

(cid:129) developments or disputes concerning patent applications, issued patents or other proprietary

rights;

(cid:129) the recruitment or departure of key personnel;

(cid:129) the level of expenses related to any of our product candidates or clinical development programs;

recommendations by securities analysts;

(cid:129) variations in our financial results or those of companies that are perceived to be similar to us;

(cid:129) fluctuations in the valuation of companies perceived by investors  to  be  comparable to us;

(cid:129) share price and volume fluctuations attributable  to  inconsistent trading volume levels of our

shares;

(cid:129) announcement or expectation of additional  financing efforts;

predict if investors will find our common stock less attractive because we will rely on these exemptions.

If some investors find our common stock less attractive as  a result, there may be a less active trading

market for our common stock and our stock price may be more volatile. We may take advantage of

these reporting exemptions until we are no longer an emerging growth company, which in certain

(cid:129) sales of our common stock by us, our insiders or  our other stockholders;

circumstances could be for up to five years.

(cid:129) changes in the structure of healthcare payment systems;

Our status as an ‘‘emerging growth company’’ under the JOBS Act may make it more  difficult to raise capital

(cid:129) market conditions in the pharmaceutical and biotechnology sectors; and

as and when we need it.

(cid:129) general economic, industry and market conditions.

In addition, the stock market in general, and pharmaceutical and biotechnology companies in
particular, have experienced extreme price and volume fluctuations that have often been unrelated  or
disproportionate to the operating performance  of  these companies. Broad  market and industry factors
may negatively affect the market price of our common stock, regardless of our actual operating
performance. The realization of any of these risks or any of a broad range of other risks, including
those described in these ‘‘Risk Factors,’’  could have a dramatic and material adverse impact on the
market price of our common stock.

We may be subject to securities litigation, which is expensive and could divert management attention.

The market price of our common stock has been and  may continue to be volatile, and in the past

companies that have experienced volatility in the  market price of their stock have been subject to
securities class action litigation. We may be the  target of this  type of litigation in the future. Securities
litigation against us could result in substantial costs and divert our management’s attention from  other
business concerns, which could seriously harm our business.

Our principal stockholders and management  own a significant percentage of our stock and will be able to
exert significant control over matters subject to  stockholder approval.

Our executive officers, directors, holders of 5% or more of our capital stock and their respective

affiliates, including Baxter, together beneficially owned approximately 42% of  our voting stock at
December 31, 2014. These stockholders may be able to determine  the outcome of all matters requiring
stockholder approval. For example, these stockholders may be able to control elections of directors,
amendments of our organizational documents,  or approval of any merger,  sale of assets, or other major
corporate transaction. This may prevent or discourage unsolicited acquisition proposals or  offers for
our common stock that you may feel are in your best interest  as one of our stockholders. The interests
of this group of stockholders may not always coincide with your interests or the interests of other
stockholders and they may act in a manner that advances their best interests and not necessarily those
of other stockholders, including seeking a premium value for their common stock, and might affect the
prevailing market price for our common stock.

We are an ‘‘emerging growth company’’  and we take advantage of reduced  disclosure and governance
requirements applicable to emerging growth companies, which could result in our common stock being less
attractive to investors.

We are an ‘‘emerging growth company,’’ as  defined in the JOBS Act, and we take advantage of

certain exemptions from various reporting requirements that are applicable to other public companies
that are not emerging growth companies including,  but not limited to, not being required to comply
with the auditor attestation requirements  of  Section 404 of the Sarbanes-Oxley Act, reduced disclosure
obligations regarding executive compensation in our periodic reports and proxy statements, and
exemptions from the requirements of holding a  nonbinding advisory vote on executive compensation
and stockholder approval of any golden parachute payments not previously approved. We cannot

Because of the exemptions from various reporting requirements  provided to us as  an ‘‘emerging

growth company’’ we may be less attractive to investors and it may be difficult for us to raise additional

capital as and when we need it. Investors may be unable to compare our business with other companies

in our industry if they believe that our financial accounting is not as transparent as other companies in

our industry. If we are unable to raise additional capital as and  when we need it, our financial

condition and results of operations may be materially  and adversely affected.

If we fail to maintain an effective system of internal  control over financial reporting in the future, we may not

be able to accurately report our financial condition, results of operations or cash flows, which may adversely

affect investor confidence in us and, as  a result, the value of our common stock.

The Sarbanes-Oxley Act requires, among other things, that we maintain effective internal controls

for financial reporting and disclosure  controls and procedures. Under Section 404  of the Sarbanes-

Oxley Act, we are required to furnish a report by management on,  among other things,  the

effectiveness of our internal control over financial reporting. This assessment includes disclosure of any

material weaknesses identified by our management in  our internal control over  financial reporting. A

material weakness is a deficiency, or combination of deficiencies, in internal control over financial

reporting that results in more than a reasonable possibility that a material misstatement of annual or

interim financial statements will not be prevented or detected on a timely basis. Section 404 of the

Sarbanes-Oxley Act also generally requires an attestation from our independent registered public

accounting firm on the effectiveness of our internal control over financial reporting. However, for as

long as we remain an ‘‘emerging growth company’’ as defined in the JOBS Act,  we intend to utilize the

provision exempting us from the requirement that our independent registered public accounting firm

provide an attestation on the effectiveness of  our internal control over  financial reporting.

We cannot assure you that there will not be material weaknesses or significant deficiencies in our

internal control over financial reporting in the future. Any failure to maintain internal control over

financial reporting could severely inhibit our ability to accurately report our financial condition, results

of operations or cash flows. If we are unable to conclude that  our internal control over financial

reporting is effective, or if our independent registered public accounting firm determines we have a

material weakness or significant deficiency in our internal control over financial reporting once that

firm begins its Section 404 audits of internal control over  financial reporting, we could lose investor

confidence in the accuracy and completeness of our financial reports, the market price of our common

stock could decline, and we could be subject to sanctions or investigations by the NASDAQ Stock

Market, the SEC or other regulatory authorities. Failure to remedy any material weakness in our

internal control over financial reporting, or to implement or maintain other effective control systems

required of public companies, could also  restrict our future access to the capital markets.

Our disclosure controls and procedures may not prevent  or detect all errors or acts of fraud.

We are subject to the periodic reporting requirements  of the Exchange Act. Our disclosure

controls and procedures are designed to reasonably assure that information required to be disclosed by

us in reports we file or submit under the Exchange Act is accumulated and communicated to

management, recorded, processed, summarized and reported within the time periods specified in the

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rules and forms of the SEC. We believe  that any disclosure controls and procedures or internal controls
and procedures, no matter how well conceived and  operated, can provide only reasonable, not absolute,
assurance that the objectives of the control system are met.

These inherent limitations include the realities that  judgments in  decision-making can be faulty,

and that breakdowns can occur because of simple error or mistake. Additionally, controls can be
circumvented by the individual acts of some persons,  by collusion of two or  more people or  by  an
unauthorized override of the controls. Accordingly, because of the inherent  limitations in  our control
system, misstatements or insufficient disclosures  due  to  error or fraud may occur and not be detected.

We incur increased costs as a result of operating as a public company, and our management is required to
devote substantial time to new compliance initiatives.

As a public company, we are incurring  and will continue to incur significant legal, accounting and

other expenses that we did not incur as a private company, and these expenses may increase even more
after we are no longer an ‘‘emerging growth company.’’ We are  subject to the reporting requirements
of the Exchange Act, the Sarbanes-Oxley  Act,  the Dodd-Frank Wall Street Reform and Protection Act,
as well as rules adopted, and to be adopted, by the SEC  and NASDAQ Stock Market.  Our
management and other personnel need  to  devote a substantial amount of time to these  compliance
initiatives. Moreover, these rules and regulations increase our  legal and financial compliance  costs and
make some activities more time-consuming and costly. For  example, these rules and  regulations can
make it more difficult and more expensive for us to obtain director and  officer liability insurance and
we may be required to incur substantial costs  to  maintain the sufficient coverage. We cannot predict or
estimate the amount or timing of additional costs we may incur to respond to these requirements. The
impact of these requirements could also make it more difficult for us to attract and retain qualified
persons to serve on our board of directors, our board committees  or as  executive officers.

Because we do not anticipate paying any cash dividends  on our capital stock in  the foreseeable future,  capital
appreciation, if any, will be your sole source of gain.

We have never declared or paid cash dividends on our capital stock. We currently intend to retain
all of our future earnings, if any, to finance the growth  and development of our business. In addition,
the terms of any future debt agreements may preclude us from paying dividends. As a result, capital
appreciation, if any, of our common stock will be your sole source of gain for the foreseeable future.

Future sales and issuances of our common stock or rights to purchase  common stock, including pursuant to
our equity incentive plans, could result in additional dilution of the percentage  ownership of our stockholders
and could cause our stock price to fall.

We expect that significant additional capital will be needed in  the future  to  continue our planned
operations. To raise capital, we may sell substantial amounts of common stock or securities convertible
into or exchangeable for common stock. These future issuances of common stock or common stock-
related securities, together with the exercise of outstanding  options and any additional  shares issued in
connection with acquisitions, if any, may result in material dilution to our investors.  Such sales may also
result in material dilution to our existing stockholders, and new investors could gain rights, preferences
and privileges senior to those of holders  of  our common stock.

Pursuant to our equity incentive plans, our  compensation  committee is authorized  to  grant equity-

based incentive awards to our directors,  executive  officers and other employees  and service providers,
including officers, employees and service providers of our subsidiaries and affiliates. The number of
shares of our common stock available for future grant under our  2013 Equity Compensation Plan,
which became effective in July 2013, was 1,012,310  as of December 31, 2014. Future option grants and

issuances of common stock under our 2013 Equity Compensation Plan may have an adverse effect on

the market price of our common stock.

Some provisions of our charter documents and Delaware law may have anti-takeover effects that could

discourage an acquisition of us by others, even if an acquisition would be beneficial to our stockholders and

may prevent attempts by our stockholders to replace or remove our current  management.

Provisions in our tenth amended and restated certificate of incorporation, or certificate of

incorporation, and amended and restated bylaws, as well as provisions  of  Delaware law, could make it

more difficult for a third party to acquire us or increase the cost of  acquiring us, even if doing so

would benefit our stockholders, or remove  our current management. These include provisions that will:

(cid:129) permit our board of directors to issue up to 5,000,000 shares of preferred stock, with any rights,

preferences and privileges as they may designate;

(cid:129) provide that all vacancies on our board of directors, including as a result of newly  created

directorships, may, except as otherwise required by law, be filled by the affirmative vote of a

majority of directors then in office, even if less than a quorum;

(cid:129) require that any action to be taken by our stockholders must be effected at a duly  called annual

or special meeting of stockholders and not be taken by written consent;

(cid:129) provide that stockholders seeking to  present  proposals before  a  meeting of stockholders or to

nominate candidates for election as directors at  a meeting of stockholders must provide advance

notice in writing, and also specify requirements as to the form and content of a  stockholder’s

notice;

meetings.

(cid:129) not provide for cumulative voting rights, thereby allowing the holders of a  majority of the shares

of common stock entitled to vote in any election of directors to elect all of  the directors

standing for election; and

(cid:129) provide that special meetings of our stockholders may be called only by the board of directors or

by such person or persons requested by a majority of the board of directors to call such

These provisions may frustrate or prevent any attempts  by our stockholders to replace or remove

our current management by making it more difficult for stockholders to replace members of our board

of directors, who are responsible for appointing  the members  of our management. Because we are

incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General

Corporation Law, which may discourage, delay or prevent someone from acquiring us or merging with

us whether or not it is desired by or beneficial to our stockholders. Under Delaware law, a corporation

may not, in general, engage in a business combination with any holder of 15% or  more of its capital

stock unless the holder has held the stock for three years or, among other things, the board of directors

has approved the transaction. Any provision of our amended and restated certificate of incorporation

or amended and restated bylaws or Delaware law that has the effect of delaying or deterring a change

in control could limit the opportunity for our stockholders to receive a premium for their shares of our

common stock, and could also affect the  price that some investors are  willing to pay for our common

stock.

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about

our business, our stock price and trading volume could decline.

The trading market for our common stock is influenced by the research and reports that securities

or industry analysts publish about us or our business. We do  not  have any control over these analysts.

There can be no assurance that analysts will continue to cover us or provide favorable coverage. If one

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59

or more of the analysts who cover us downgrade our  stock  or change their opinion of our stock, our
share price would likely decline. If one or more of these analysts cease coverage of our company or fail
to regularly publish reports on us, we could lose visibility  in the financial markets, which could cause
our share price or trading volume to decline.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

Our corporate headquarters and research facilities are located in Newtown, Pennsylvania, where
we lease an aggregate of approximately 9,500 square feet of office and  laboratory space, pursuant to
lease agreements, the terms of which expire in March 2016  and August 2015, respectively. We have a
second office located in Pennington, New Jersey, where we lease an aggregate of approximately 4,800
square feet of office space. Currently, this facility houses our clinical development, clinical operations,
regulatory and commercial personnel. The lease for the Pennington, New Jersey facility will  terminate
in May 2015, at that time all domestic operations will be consolidated into the Newtown, Pennsylvania
facility.

We believe that our Newtown, Pennsylvania facility is adequate  for our near-term needs. When our

lease expires, we may exercise renewal options or look for additional or  alternate space for our
operations. We believe that suitable additional  or alternative space would be available on commercially
reasonable terms if required in the future.

We lease temporary office space in Munich,  Germany, for our European personnel.

ITEM 3. LEGAL PROCEEDINGS

We are not a party to any legal proceedings and we are not aware of any such proceedings

contemplated by government authorities.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON  EQUITY, RELATED STOCKHOLDER MATTERS

AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock began trading on the NASDAQ Global Select Market on July 25, 2013 under

the symbol ‘‘ONTX.’’ Prior to that time, there was no public market for our  common stock. Shares sold

in our initial public offering on July 24, 2013 were priced at  $15.00 per share.

The following table sets forth the high and  low sales prices per share of our common stock as

reported on the NASDAQ Global Select Market for the period indicated.

Year Ended December 31, 2013

Third quarter (beginning July 25, 2013) . . . . . . . . . . . . . . . . . . . . .

Fourth quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High

Low

$30.00

31.13

$19.42

11.31

High

Low

Year Ended December 31, 2014

First Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$16.22

$6.05

Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.49

5.78

5.00

4.10

4.24

3.24

As of March 18, 2015, there were 174 holders of record for shares of our common stock. This does

not reflect beneficial stockholders who held their common stock in ‘‘street’’ or nominee  name through

Securities Authorized for Issuance Under Equity Compensation Plans

Information regarding securities authorized  for issuance under the Company’s equity compensation

plans is contained in Part III, Item 12 of this Annual Report.

Stockholders

brokerage firms.

Performance Graph

The following graph illustrates a comparison  of  the total cumulative stockholder return for our

common stock since July 25, 2013, which is the first trading day for our stock, to two indices: the

NASDAQ Composite Index and the NASDAQ Biotechnology  Index. The graph assumes an initial

investment of $100 on July 25, 2013, in our  common  stock, the stocks comprising the NASDAQ

Composite Index, and the stocks comprising the NASDAQ  Biotechnology  Index. Historical stockholder

return is not necessarily indicative of the performance to be expected for any future periods.

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61

Comparison of Cumulative Total Return*
Among Onconova Therapeutics Pharmaceuticals,  Inc., the NASDAQ Composite Index and the
NASDAQ Biotechnology Index

Comparison of 18 Month Cumulative Total Return
Assumes Initial Investment of $100
December 2014

Rule 424(b)(4) under the Securities Act on July 25, 2013, we used the net proceeds from our  offering

for the overall development of our product candidates, primarily to fund the  clinical development of

rigosertib, and to fund general and administrative expenses. From the completion of our offering

through December 31, 2014, our cash expenditures have exceeded the net proceeds of our public

offering.

180.00

160.00

140.00

120.00

100.00

80.00

60.00

40.00

20.00

0.00

7/25/2013

9/30/2013

12/31/2013

03/31/2014

06/30/2014

09/30/2014

12/31/2014

Onconova Therapeutics, Inc.

NASDAQ Composite - Total Return

NASDAQ Biotechnology Index

27MAR201505371723

*

$100 invested on 7/25/2013 in stock or  index.

The performance graph shall not be deemed to be incorporated by reference by means of any

general statement incorporating by reference this Annual Report into any filing under the Securities
Act of 1933, as amended or the Exchange Act, except to the extent that we specifically incorporate
such information by reference, and shall not  otherwise be deemed filed under such acts.

Dividend Policy

We have never declared or paid any cash dividends on  our capital stock. We currently intend to
retain all available funds and any future earnings to support our  operations and finance the growth and
development of our business. We do not intend to pay cash dividends on our common stock for the
foreseeable future.

Issuer Purchases of Equity Securities

We did not purchase any of our registered equity  securities during the fiscal quarter ended

December 31, 2014.

Use of Proceeds from Registered Securities

On July 30, 2013, we completed our initial public offering of 5,941,667 shares of our common

stock, at a price of $15.00 per share, including 775,000 shares of common stock issued upon  the
exercise in full by the underwriters of their  option to purchase additional  shares at the same  price to
cover over-allotments. We received net proceeds of $79,811,000 from the sale, net of underwriting
discounts and commissions and other offering  expenses. The offer and sale of all of the shares in the
offering were registered under the Securities Act in accordance with our final prospectus filed on
July 25, 2013 with the SEC pursuant to Rule 424(b)(4) of the Securities  Act.

Pending our operating needs, we invested the  net proceeds from the offering in a variety of capital

preservation investments, including short-term, investment grade, interest bearing instruments such as
U.S. government securities and money  market funds. Consistent with the planned  use of proceeds
described in in our final prospectus filed  with the Securities and Exchange  Commission pursuant to

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63

Item 6. Selected Financial Data

The selected financial data set forth below is derived from our  audited consolidated financial
statements and may not be indicative of future operating results. The following selected consolidated
financial data should be read in conjunction with Item 7, ‘‘Management’s Discussion and Analysis of
Financial Condition and Results of Operations’’ and the consolidated financial statements and the
notes thereto included elsewhere in this report. The selected financial data in this section are not
intended to replace our consolidated financial statements and the related notes. Our historical results
are not necessarily indicative of our future  results.

Consolidated Statement of Operations

Data:

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

Years  ended December 31,

2014

2013

2012

2011

$

800,000

$ 4,753,000

$ 46,190,000

$ 1,487,000

General and administrative . . . . . . . . . .
Research and development . . . . . . . . . . .

15,119,000
49,425,000

16,793,000
50,182,000

15,707,000
52,762,000

6,436,000
22,624,000

Total operating expenses . . . . . . . . . . .

64,544,000

66,975,000

68,469,000

29,060,000

Loss from operations . . . . . . . . . . . . . . . .

(63,744,000)

(62,222,000)

(22,279,000)

(27,573,000)

Change in fair value of warrant liability . . .
Interest expense . . . . . . . . . . . . . . . . . . . .
Other income, net . . . . . . . . . . . . . . . . . . .

20,000
(2,000)
(50,000)

42,000
(4,000)
63,000

367,000
(8,608,000)
608,000

1,287,000
(19,000)
11,000

Net loss before income taxes . . . . . . . . . . .
Income taxes . . . . . . . . . . . . . . . . . . . . . .

(63,776,000)
19,000

(62,121,000)
435,000

(29,912,000)
—

(26,294,000)
—

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss attributable to non-controlling

(63,795,000)

(62,556,000)

(29,912,000)

(26,294,000)

interest . . . . . . . . . . . . . . . . . . . . . . . . .

113,000

13,000

—

—

Net loss attributable to Onconova

Therapeutics, Inc . . . . . . . . . . . . . . . . . .

(63,682,000)

(62,543,000)

(29,912,000)

(26,294,000)

Accretion of redeemable convertible

preferred stock . . . . . . . . . . . . . . . . . . .

—

(2,320,000)

(3,953,000)

(4,020,000)

Net loss applicable to common stockholders

$(63,682,000) $(64,863,000) $(33,865,000) $(30,314,000)

Net loss per share of common stock, basic

and diluted . . . . . . . . . . . . . . . . . . . . . .

$

(2.94) $

(6.12) $

(15.35) $

(14.18)

Basic and diluted weighted average shares

outstanding . . . . . . . . . . . . . . . . . . . . . .

21,653,536

10,594,227

2,206,888

2,137,403

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

You should read the following discussion and analysis of  our financial condition and results of

operations together with our consolidated financial statements and the related notes and other financial

information included elsewhere in this Annual Report. Some of the information contained in this discussion

and analysis or set forth elsewhere in this Annual Report, including information with respect to our plans

and strategy for our business and related financing, includes forward-looking statements that involve risks

and uncertainties. You should review the ‘‘Risk Factors’’ section of this Annual Report for a discussion of

important factors that could cause actual results to differ materially from the results described in or implied

by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a clinical-stage biopharmaceutical company focused on discovering and developing novel

small molecule drug candidates to treat cancer. Using our proprietary chemistry platform, we have

created an extensive library of targeted anti-cancer agents designed to work against specific cellular

pathways important to cancer cells. We believe that the drug candidates in  our pipeline have the

potential to be efficacious in a variety of cancers. We have three clinical-stage product candidates (one

of which is being developed for treatment of acute radiation syndromes, not cancer) and several

preclinical programs, with the majority of our current efforts focused on our lead product candidate,

rigosertib, which is being tested as a single agent and in combination with azacitidine, in clinical trials

of patients with myelodysplastic syndromes, or MDS, and related cancers.

We are currently developing the protocol for a new Phase 3 clinical trial of rigosertib, our  most

advanced product candidate.  Based on separate discussions with  both the U.S. Food  and Drug

Administration, or FDA, and European Medical Authorities, or EMA, we anticipate a randomized

controlled trial of rigosertib IV in a more homogeneous patient population than in our prior clinical

trials, which has appeared in our prior clinical trials to derive a greater benefit from rigosertib

treatment. We are also continuing the Phase 2 portion of a clinical trial of rigosertib oral in

combination with azacitidine for patients with MDS and acute myelogenous leukemia, or AML, and an

extended portion of a Phase 2 clinical trial of rigosertib oral for patients with lower-risk MDS in order

to assess the utility of bone marrow genomic methylation patterns and genomic DNA testing  for the

identification of patients more likely to respond to rigosertib. We anticipate presenting interim Phase 2

data from our combination trial, as well as data from in vitro  studies evaluating the activity of

rigosertib in lower-risk MDS, during the second quarter of 2015.

At December 31, 2014, we had approximately $43.6 million in cash and cash equivalents. We do

not believe that we will be able to complete our planned new Phase 3 clinical trial of rigosertib IV

without raising additional funds. Accordingly, we are taking significant actions to conserve cash

(including headcount reductions) and are evaluating other cash conservation measures, while exploring

various dilutive and non-dilutive sources of funding. If we are not able to raise sufficient funds when

needed, our operations, including our existing and planned clinical trials, will be negatively impacted.

2014

Years  ended December 31,

2013

2012

2011

Rigosertib

Consolidated Balance Sheet Data:
Cash, cash equivalents and marketable
securities . . . . . . . . . . . . . . . . . . . .
Total assets . . . . . . . . . . . . . . . . . . . .
Total liabilities . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . .
Total stockholders’ equity (deficit) . . . .

$ 43,582,000
47,337,000
23,715,000
(294,578,000)
23,622,000

$ 100,003,000
105,153,000
24,253,000
(230,896,000)
80,900,000

$ 81,527,000
83,852,000
40,843,000
(168,353,000)
(158,306,000)

$

2,713,000
4,462,000
12,081,000
(138,441,000)
(138,419,000)

Rigosertib, is being tested as a single agent and in combination with azacitidine, in clinical trials of

patients with MDS and related cancers. To date, we have enrolled  more than 1,000 patients in

rigosertib clinical trials. We have collaboration agreements with Baxter Healthcare SA, or Baxter, and

SymBio Pharmaceuticals Limited, or SymBio, which grant Baxter certain rights  to  commercialize

rigosertib in Europe and grant SymBio certain rights to commercialize rigosertib in Japan and Korea.

We have retained development and commercialization rights to rigosertib in the rest of the world,

including in the United States. Rigosertib is a small molecule that inhibits cellular signaling in cancer

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65

cells by acting as a Ras mimetic. This is believed to be mediated by the binding of rigosertib  to  the
Ras-binding domain, or RBD, found in many Ras effector proteins, including the  Raf and
PI3K kinases. In contrast to many other kinase inhibitors, rigosertib does not interact at the  adenosine
triphosphate binding site, but acts via allosteric inhibition. This mechanism of action  exemplifies a new
approach to block the interactions between Ras and  its targets containing RBD sites. We believe that
rigosertib may have activity in MDS due to its targeting of Ras and Ras effector proteins, which are
associated with the pathogenesis of myeloid neoplasms.

Rigosertib IV for higher-risk MDS

In February 2014, we announced topline survival results from our multi-center Phase 3 clinical trial
of rigosertib IV as a single agent, which we refer to as our ‘‘ONTIME’’ trial. The ONTIME trial was a
randomized, controlled study, where eligible patients must have progressed on, failed to respond to or
relapsed after prior therapy with HMAs, have excess blasts (5-30%  blasts) and have at least one
cytopenia. Complete results from the trial, presented at  the 2014 Annual American Society of
Hematology Meeting, or 2014 ASH Meeting, showed numerical improvement in median overall survival
in the rigosertib treated patients. However, the observed improvement in survival of 2.3 months was not
sufficient to establish the required level of statistical significance and, therefore did not achieve the
primary endpoint of the trial.

While the ONTIME trial did not meet its primary endpoint in the intent-to-treat population,
improvements in median overall survival (mOS) were  observed in various pre-specified and exploratory
subgroups of patients, including ‘‘primary HMA failure’’ patients (those who had progressed on or
failed to respond to previous treatment with HMAs) and patients in the IPSS-R Very High Risk
category.

During 2014 and January 2015, we held meetings with the FDA, EMA, and several European

national regulatory agencies to discuss and seek guidance on a path for approval of rigosertib IV in
higher-risk MDS. We discussed with both the FDA and EMA potential for refining the clinical
indication based on the demonstration  of heterogeneity in the ONTIME trial patient population and
the consequent definition of subgroups with high prognostic risk  that appear to derive a greater benefit
from rigosertib treatment. In January 2015, both the FDA  and EMA expressed a preference for
another randomized controlled trial with overall survival and overall response as clinically meaningful
endpoints. Based on the feedback from the FDA  and the  EMA, and utilizing the results of the
ONTIME trial, the protocol for a randomized controlled trial  in a more homogeneous patient
population is being developed. Pending regulatory approvals and appropriate financing, we hope to
initiate enrollment in this trial as early as the second  half of 2015. In light of  the regulatory guidance
we stopped patient accrual in our 04-24 single-arm clinical trial of rigosertib IV in higher-risk MDS
during the first quarter of 2015.

Rigosertib oral in combination with azacitidine in MDS and AML

We are currently enrolling patients in  the Phase 2 portion of  a  Phase 1/2 clinical trial testing oral

rigosertib in combination with azacitidine for patients with MDS and AML. In December 2014, we
presented results from the Phase 1 portion of this trial at the Annual  ASH Meeting. The Phase 2
portion of the trial has been designed to assess whether  treatment with rigosertib, in combination with
azacitidine, has a beneficial effect on bone marrow  and peripheral  blood counts and symptoms of
disease progression in patients with MDS and AML. Patient enrollment in the  Phase 2  portion of this
trial is projected to be completed by the end of  the second quarter of this year. We plan to present
interim Phase 2 data from this trial at a scientific conference in the second quarter of 2015.

Oral Rigosertib for lower-risk MDS

Unlike higher-risk MDS patients who suffer from a shortfall in normal blood cells, or cytopenias,

as well as elevated levels of cancer cells, or blasts in their bone marrow and bloodstream, lower-risk

MDS patients suffer only from cytopenias, that is low levels of red blood cells, white blood cells or

platelets. Thus, lower-risk MDS patients depend on transfusions and growth factors or other therapies

to improve their low blood counts.

In December 2013, we presented data  at the Annual ASH Meeting from our Phase 2 trial with an

oral formulation of rigosertib in lower-risk MDS patients. Phase 2 clinical data showed encouraging

efficacy of single agent oral rigosertib (560 mg AM/560 mg PM) in  transfusion-dependent, lower-risk

MDS patients. Rigosertib was generally well tolerated, except for treatment-related urinary side effects

seen at the 560 mg AM/560 mg PM dose. In an attempt to  ameliorate the drug-related side effects, the

dosing of oral rigosertib was changed to 560 mg AM/280 mg PM. This modified dosing and schedule

has been tested in more than 50 patients in Phase 2 trials of lower-risk MDS. These studies indicate

that modified dosing of oral rigosertib is well tolerated and  without significant urinary side effects. The

reduced dosing also affected efficacy, necessitating additional pharmacokinetic and pharmacodynamics

studies, which are now being planned.  The nature of these  studies is now being discussed with the study

investigators and experts.

Data presented at ASH in December 2013 also revealed the potential of a genomic methylation

assessment as a tool to potentially identify patients  likely  to respond to oral rigosertib. We have

extended a Phase 2 clinical trial to add an additional cohort of 20 patients in the development of  this

genomic methylation test. We are collaborating with a methylation genomics company to refine the test.

We expect to present or publish these findings this year. A second approach, aimed at patient selection

and for the understanding of the mechanisms underlying the activity of rigosertib in lower-risk MDS,

involves a patient-derived bone marrow cell culture system and has been developed by our

collaborators at Columbia University Medical Center. Initial results from these in vitro studies will  be

presented at the American Association for Cancer Research conference in April 2015.

On January 27, 2015, Baxter, our European collaboration partner for rigosertib in response to our

delivery of a notice and materials relating  to  one of our Phase 2 clinical trials in lower-risk MDS,

notified us that it has elected not to  pursue additional clinical trials  or the submission  of a drug

approval application for oral rigosertib in lower risk-MDS patients. The decision by Baxter does not

alter the terms of our collaboration agreement. We have the right to continue the development of oral

rigosertib in this indication on our own, and Baxter has the right to commercialize oral rigosertib for

lower-risk MDS indications in its territory, subject to its ongoing compliance with the agreement,

including payment of applicable milestones.

Briciclib

Our second clinical-stage product candidate is briciclib, a small molecule targeting an important

intracellular regulatory protein, cyclin D1, which is often found at elevated levels in cancer cells.

Cyclin D1 expression is regulated through a process termed cap-dependent  translation, which requires

the function of eukaryotic initiation factor 4E, or eIF4E,  protein. In vitro evidence indicates briciclib

binds to eIF4E, blocking cap-dependent translation of  Cyclin D1 and other cancer proteins, such as

c-MYC and VEGF, leading to tumor cell death. We are conducting a Phase 1 multisite dose-escalation

trial of briciclib in patients with advanced solid tumors refractory to current therapies. Upon

completion of the dose-escalation portion of the ongoing Phase 1 trial, which we project in the second

half of 2015, we will assess potential further development for briciclib.

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Recilisib

Our third clinical-stage product candidate, recilisib, is being developed in  collaboration with the
U.S. Department of Defense for acute radiation syndromes. We have conducted animal studies and
clinical trials of recilisib under the FDA’s Animal Efficacy  Rule, which permits marketing approval for
new medical countermeasures for which  human efficacy studies are not feasible or ethical, by relying on
evidence from animal studies in appropriate  animal models to support efficacy in humans. We have
completed four Phase 1 trials to evaluate  the safety and pharmacokinetics  of recilisib in healthy human
adult subjects using both subcutaneous and oral  formulations. Ongoing studies  of recilisib are being
conducted by third parties with government funding, and we anticipate that any future development of
recilisib beyond our ongoing studies would be conducted solely with government funding or in
collaborations.

Preclinical Product Candidates

In addition to our three clinical-stage product  candidates, we  have several product candidates that

target kinases, cellular metabolism or cell division in preclinical development. We may  explore
additional collaborations to further the  development of these product candidates as we focus internally
on our more advanced programs.

We were incorporated in Delaware in December 1998 and commenced operations in January 1999.

Our operations to date have included our organization and staffing, business planning, raising capital,
in-licensing technology from research  institutions, identifying potential product candidates, developing
product candidates and building strategic alliances, as well as  undertaking preclinical studies and
clinical trials of our product candidates.

Since commencing operations we have dedicated a significant portion of our resources to our
development efforts for our clinical-stage product candidates,  particularly rigosertib. We incurred
research and development expenses of $49.4 million, $50.2 million and  $52.8 million during the years
ended December 31, 2014, 2013 and 2012, respectively. We anticipate that a significant portion of our
operating expenses will continue to be related to research and development as we continue  to  advance
our preclinical programs and our clinical-stage product candidates. In July  2013, we completed our
initial public offering, or IPO, from which we received net proceeds of $79.8 million. Prior to the
consummation of the IPO, we funded  our operations  primarily through the sale of preferred stock
amounting to $144.7 million, including  $50.0 million that Baxter  invested in our Preferred Stock in
2012, as well as proceeds from the issuance of convertible debt and a stockholder loan amounting to
$26.8 million in the aggregate, all of which  was later converted into shares of  our Preferred Stock,  and
upfront payments of $7.5 million from SymBio and $50.0 million from Baxter in connection with our
collaboration agreements. We have also received an aggregate of $8.0 million from The Leukemia and
Lymphoma Society, or LLS, under a funding agreement. Under our collaboration agreements with
Baxter and SymBio, we are also eligible to receive  various milestone payments upon the achievement of
specified development and regulatory  milestones and up to $280.0 million upon the achievement of
specified commercialization milestones, as well  as tiered royalties, at percentage rates ranging from the
low-teens to low-twenties, on any future net sales of products resulting  from these collaborations. As of
December 31, 2014, we had $43.6 million in cash and cash  equivalents.

Our net losses were $63.8 million, $62.6 million and $29.9  million for the years ended

December 31, 2014, 2013 and 2012, respectively. We recognized revenues of $0.8  million, $4.8 million
and $46.2 million for the years ended December 31, 2014,  2013 and 2012, respectively. As of
December 31, 2014, we had an accumulated  deficit of $294.6 million.  We expect to incur significant
expenses and operating losses for the foreseeable future  as we continue the development and clinical
trials of, and seek regulatory approval for, our product candidates, even as milestones under our license
and collaboration agreements may be met. If we obtain regulatory approval for any of our product

candidates, we expect to incur significant commercialization expenses. We do not currently have an

organization for the sales, marketing and distribution of pharmaceutical products. We may rely on

licensing and co-promotion agreements with strategic or  collaborative partners for the

commercialization of our products in the United States and other territories. If we choose to build a

commercial infrastructure to support marketing in the United States for any of our product candidates

that achieve regulatory approval, such commercial infrastructure could be  expected to include  a

targeted, oncology sales force supported by sales management, internal sales support, an internal

marketing group and distribution support. To develop  the appropriate commercial infrastructure

internally, we would have to invest financial and management resources, some of which would have  to

be deployed prior to having any certainty  about marketing approval. Furthermore, we have and expect

to continue to incur additional costs associated with operating as a public company.

We do not have the funding resources necessary  to  carry out all of our proposed operating

activities. We will need to obtain additional financing in the future in order to fully fund rigosertib or

any other product candidates through the regulatory approval process. Accordingly, we may delay our

planned clinical trials, including the planned new Phase 3 clinical trial of rigosertib IV in higher-risk

MDS, until we secure adequate additional  funding. If we seek to proceed with a new clinical trial

without additional funding, we may receive questions or comments from the FDA, fail to obtain IRB

approval, or find it more difficult to  enroll patients in  the trial.  Additionally, we plan to scale down our

operations in order to reduce spending on  general and administrative functions, research and

development, and other clinical trials. We are exploring various dilutive and non-dilutive sources of

funding, including equity and debt financings, strategic alliances, business development and other

sources. If we are unable to secure adequate additional funding, we will continue to delay, scale-back

or eliminate certain of our planned research, drug discovery and development activities and certain

other aspects of our operations and our business until such time as we are  successful in securing

adequate additional funding. As a result,  our business,  operating  results, financial condition and cash

flows may be materially and adversely affected. We will incur substantial costs beyond the present and

planned clinical trials in order to file a New Drug Application (NDA) for rigosertib. The nature,

design, size and cost of further studies will depend  in large part on the outcome of preceding studies

and discussions with regulators.

Collaboration Agreements

Baxter Healthcare SA

In September 2012, we entered into a development and license agreement with a subsidiary of

Baxter International Inc., Baxter Healthcare SA, or Baxter, granting Baxter an exclusive, royalty-bearing

license for the research, development, commercialization and manufacture (in  specified instances) of

rigosertib in all therapeutic indications in Europe. Under the Baxter  agreement, we are obligated to use

commercially reasonable efforts, in accordance with  a development plan agreed upon by the parties, to

direct, coordinate and manage the development of rigosertib for certain specified indications. In

addition, the agreement provides a mechanism to expand the scope of the collaboration  for additional

indications. Collaboration and development under our agreement with Baxter is guided by a joint

steering committee.

The initial indications specified in our  agreement with Baxter are treatment of MDS with

rigosertib IV, treatment of MDS with rigosertib oral, and treatment of pancreatic cancer. Treatment of

MDS or AML with rigosertib oral in combination with azacitidine could be added as an additional

indication in the future. At this time,  the focus of our collaboration with Baxter is treatment of higher

risk MDS with rigosertib IV. The parties jointly determined  not to pursue the pancreatic cancer

indication after a December 2013 interim futility and safety analysis and, on January 27, 2015, Baxter

notified us that it elected not to pursue additional clinical trials, or the submission of a drug approval

application, for rigosertib oral in lower risk MDS patients. The decision by Baxter does not alter the

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terms of our agreement. We have the right to continue the development of  oral rigosertib in this
indication on our own and Baxter has  the right to commercialize oral rigosertib for lower-risk MDS
indications in its territory, subject to its  ongoing compliance with the agreement, including payment of
applicable milestones.

Under the terms of the agreement, Baxter made an upfront payment to us of $50.0 million, and
we are eligible to receive pre-commercial milestone payments if specified development and regulatory
milestones are achieved. The potential pre-commercial development milestone payments to the
Company include $25,000,000 for each  drug approval application filed for indications specified in the
agreement, and up to $100,000,000 for marketing approval for each of the specified MDS indications.
We can also elect to have Baxter fund half of  the costs of planned new Phase 3 clinical trial of
rigosertib IV in higher-risk MDS patients, up to $15.0 million. If we do so elect, then the approval
milestone for higher-risk MDS will be  reduced by  $15.0 million.

In addition to these pre-commercial milestones, we are  eligible to receive up to an aggregate of
$250.0 million in milestone payments based on Baxter’s achievement of pre-specified threshold levels of
annual net sales of rigosertib. We are also entitled to receive royalties at percentage rates ranging from
the low-teens to the low-twenties on net sales of rigosertib  by Baxter in  the licensed territory, and these
royalty rates may be reduced depending on when we receive marketing approval for the use of
rigosertib IV for MDS from the EMA or specified European  Union countries, and whether or not a
competing product for refractory MDS has been approved  within a specified period after our receipt of
approval for rigosertib IV for MDS.

Under the agreement, Baxter is obligated to pay  us  royalties, on  a country-by-country basis in the

licensed territory, until the later of the expiration  of all valid claims of  the  patent rights licensed to
Baxter that cover the manufacture, use, sale or  importation  of  rigosertib in such country, and the
expiration of regulatory-based exclusivity for rigosertib in such country. If the patent rights and
regulatory-based exclusivity expire in a particular country before a specified period of time after first
commercial sale of rigosertib in that country, Baxter will pay us royalties at  a reduced rate until the
end of the specified period.

The agreement with Baxter will remain in effect until the expiration of all applicable royalty  terms
and satisfaction of all payment obligations  in each licensed  country,  unless terminated earlier due to the
uncured material breach or bankruptcy of a party, force majeure, or in the event of a specified
commercial failure. We may terminate the agreement in  the event that  Baxter brings a challenge
against us in relation to the licensed patents. Baxter may terminate the agreement without cause upon
180 days’ prior written notice.

In July 2012, Baxter purchased $50.0 million of our Series J convertible preferred stock, which
converted to shares of our common stock immediately prior to the consummation of our initial public
offering in July 2013 and invested an additional $5.0 million in our initial public offering.

SymBio Pharmaceuticals Limited

In July 2011, we entered into a license agreement with SymBio Pharmaceuticals Limited, or
SymBio, as subsequently amended, granting SymBio an  exclusive,  royalty-bearing license for the
development and commercialization of rigosertib in Japan and Korea. Under  the SymBio license
agreement, SymBio is obligated to use commercially reasonable efforts to develop and obtain market
approval for rigosertib inside the licensed territory and we  have similar obligations  outside of the
licensed territory. In January 2015, SymBio  completed enrollment in a Phase  1 clinical  trial testing
rigosertib IV (SyB L-1101) for refractory/relapsed higher-risk MDS patients. SymBio is also evaluating
rigosertib oral (SyB C-1101) in an ongoing domestic Phase 1 clinical trial for patients with higher-risk
MDS. We have also entered into an agreement with SymBio to supply  them with development-stage
product. Under the SymBio license agreement we also agreed to supply commercial product to SymBio

under specified terms that will be included in a commercial supply agreement to be negotiated prior to

the first commercial sale of rigosertib. We have also granted SymBio a right of first negotiation to

license or obtain the rights to develop and commercialize compounds having a chemical structure

similar to rigosertib in the licensed territory.

Under the terms of the SymBio license agreement, we received an upfront payment of

$7.5 million. We are eligible to receive milestone payments of up to an aggregate of $22.0 million from

SymBio upon the achievement of specified development and regulatory milestones for specified

indications. Of the regulatory milestones, $5.0 million  is due  upon receipt  of marketing approval in the

United States of rigosertib IV in higher-risk MDS patients,  $3.0 million is due upon receipt of

marketing approval in Japan for rigosertib IV in higher-risk MDS patients, $5.0 million is due upon

receipt of marketing approval in the United States for rigosertib Oral in lower-risk MDS patients and

$5.0 million is due upon receipt of marketing approval in Japan  for rigosertib Oral in lower-risk MDS

patients. Furthermore, upon receipt of marketing approval in the United  States and Japan for  an

additional specified indication of rigosertib, which we are currently not pursuing, an aggregate of

$4.0 million would be due. In addition to these pre-commercial milestones, we are eligible to receive

tiered milestone payments of up to an aggregate of $30.0 million based upon annual net sales of

rigosertib by SymBio in the licensed territory. Further, under the terms of the SymBio license

agreement, SymBio is obligated to make royalty payments to us at percentage  rates ranging from the

mid-teens to 20% based on net sales, if any, of rigosertib by  SymBio in the licensed territory.

Royalties will be payable under the SymBio agreement on a country-by-country  basis in the

licensed territory, until the later of the expiration of marketing exclusivity in those countries, a specified

period of time after first commercial sale of rigosertib in such country, or the  expiration of all valid

claims of the licensed patents covering  rigosertib or the manufacture or use of rigosertib in such

country. If no valid claim exists covering the composition of matter of rigosertib  or the use of or

treatment with rigosertib in a particular country before the expiration of the royalty term, and specified

competing products achieve a specified market share percentage in  such country, SymBio’s obligation to

pay us royalties will continue at a reduced royalty rate until the  end  of the royalty term. In addition,

the applicable royalties payable to us may  be  reduced if SymBio is required to pay royalties to third

parties for licenses to intellectual property rights necessary to develop, use, manufacture or

commercialize rigosertib in the licensed territory.

The license agreement with SymBio will remain  in effect until the expiration of the royalty term.

However, the SymBio license agreement may be terminated earlier due to the uncured material breach

or bankruptcy of a party, or force majeure. If SymBio terminates the license agreement in these

circumstances, its licenses to rigosertib will survive, subject to SymBio’s milestone and royalty

obligations, which SymBio may elect  to defer and offset  against any damages that may be determined

to be due from us. In addition, we may terminate the license agreement in  the event that SymBio

brings a challenge against us in relation to the  licensed patents, and SymBio may terminate the license

agreement without cause by providing us with written  notice a  specified period of time in advance of

termination.

The Leukemia and Lymphoma Society

In May 2010, we entered into a funding  agreement with The Leukemia and Lymphoma Society, or

LLS, to fund the development of rigosertib.  Under the LLS funding agreement, we are obligated to use

the funding received exclusively for the payment or reimbursement of the costs and expenses for

clinical development activities for rigosertib. Under this agreement, we retain ownership and  control  of

all intellectual property pertaining to works of authorship, inventions, know-how, information, data and

proprietary material.

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Under the LLS funding agreement, as amended, we  received funding  of $8.0 million from LLS

through 2012. We did not receive any funding from LLS in 2013 and we terminated the funding
agreement effective as of March 2013. We are required to make specified payments to LLS, including
payments payable upon execution of the first out-license; first approval for marketing by a regulatory
body; completion of the first commercial sale of rigosertib; and achieving  specified annual net sales
levels of rigosertib. The extent of these payments and our obligations will depend on whether we
out-license rights to develop or commercialize  rigosertib  to a third party, we commercialize rigosertib
on our own or we combine with or are sold to another company. In addition, we will pay to LLS a
single-digit percentage royalty of our net sales of rigosertib, if  any. Following a $1.0 million repayment,
which occurred in October 2012, the sum of our payments to LLS is capped at $23.0 million.

Preclinical Collaboration

In December 2012, we agreed to form GBO,  LLC, or GBO, an entity  owned by us and GVK
Biosciences Private Limited, or GVK  BIO, to collaborate on  the development of two of our preclinical
programs. GVK BIO made an initial  capital contribution of $500,000 in exchange for a 10% interest  in
GBO and we contributed a sub-license to the intellectual property related to the two programs in
exchange for a 90% interest. In November 2014, GVK  BIO  made a  second capital contribution of
$500,000 in exchange for an additional 7.5% interest in  GBO. GVK BIO will be required to make
additional capital contributions over  time, subject  to  specified conditions, and its interest  in GBO will
increase  to as much as 50%. At specified  times, we will be entitled to buy back from GVK BIO the
rights to either of these two programs. In addition, upon the occurrence of certain events namely
termination of our participation in the programs  either with  or without a change in control, GVK  BIO
will be entitled to purchase or obtain our interest in  GBO.

Financial Overview

Revenue

To date, we have derived revenue principally from activities pursuant to our collaboration

arrangements with Baxter and SymBio as well as from grants and  research agreements. The following
table sets forth a summary of revenue recognized  from our collaboration agreements and research
agreements for the years ended December 31, 2014, 2013 and 2012:

Year  Ended  December 31,

2014

2013

2012

Baxter license and collaboration revenue . . . . .
SymBio license and collaboration revenue . . . .
Research funding . . . . . . . . . . . . . . . . . . . . . .

$334,000
466,000
—

$4,176,000
577,000
—

$45,490,000
503,000
197,000

$800,000

$4,753,000

$46,190,000

We have not generated any revenue from commercial product sales. In the future, if any of our
product candidates currently under development are approved  for  commercial  sale in the United  States
and Canada, we may generate revenue from product sales, or  alternatively, we may choose to select a
collaborator to commercialize our product candidates in these markets.

The Baxter collaboration agreement is considered to be a multiple-element arrangement for
accounting purposes. We determined that there are two  deliverables under the Baxter agreement;
specifically, the license to rigosertib for Europe and the related research and development services  that
we are obligated to provide. We concluded that $42.4 million of the fixed  and determinable
$50.0 million upfront payment was associated with the license and $7.6  million was associated with the
research and development services. We recognized the  entire $42.4  million associated with the upfront

license as revenue during the third quarter of 2012 upon the execution of the Baxter  agreement, and

we recognized the research and development services revenue of $7.6  million on the proportional

performance method over the period  of commitment and development, which was estimated to be

through March 31, 2014, the period of our  non-contingent obligations to perform research and

development services sufficient to advance rigosertib. For the years ended December 31, 2014, 2013

and 2012, we recognized $0.3 million, $4.2 million and $3.1 million, respectively, of research and

development services revenue under the Baxter agreement.

The SymBio collaboration agreement is also considered to be a multiple-element arrangement for

accounting purposes. We determined that there were three deliverables under the SymBio collaboration

agreement; specifically, the license to  rigosertib for Japan and Korea, our obligation to perform

research and development services necessary for SymBio to  seek approval in its territory and our

obligation to participate on a joint steering committee. We concluded that these deliverables should be

accounted for as a single unit of accounting. We determined that the $7.5 million upfront payment

received in 2011 should be deferred and recognized as revenue on a straight-line basis through

December 2027, reflecting our estimate of when we will complete our obligations under the agreement.

For the years ended December 31, 2014, 2013 and 2012,  we recognized revenues of  $455,000, $455,000

and $455,000, respectively, under the SymBio collaboration agreement. In addition, we recognized

revenues of $11,000, $122,000 and $48,000 for the years ended December  31, 2014, 2013 and 2012,

respectively, related to the supply agreement with SymBio.

Pursuant to our funding agreement with LLS, during the year ended December 31, 2012, we paid

$1.0 million to LLS, which we recorded as research and development expenses. This payment reduced

the maximum milestone and royalty payment obligation under this agreement to $23.0 million at

December 31, 2014.

In addition, some of our obligations under the LLS funding agreement will remain in effect until

the completion of specified milestones and payments to LLS. Assuming the successful outcome of the

development activities covered by the LLS  funding  agreement and  our receipt of necessary regulatory

approvals, we will be required to take commercially reasonable steps through March 2018 to advance

the development of rigosertib in clinical trials and to bring rigosertib to practical application for MDS

in a major market country, provided that we believe the product is safe and  effective. We believe that

we can satisfy our obligation by out-licensing rigosertib  to,  or  partnering rigosertib  with, a third party.

We are required to report to LLS on our efforts and  results with respect to  continuing development of

rigosertib. Our failure to perform these diligence obligations, even if we  successfully achieve the

specified development milestones, would require us to pay  back to LLS the total amount of the funding

we received from them, unless an exception  applies. If  LLS were to claim that such failure occurred

and we disagreed with such claim, the dispute would be settled through binding arbitration.

As a result of the potential obligation to pay back to LLS the total amount of funding  received

under this arrangement, the $8.0 million of milestone payments we received through December 31,

2014 has been recorded as deferred revenue.

In December 2012, we agreed to form GBO, an entity owned by both us and GVK BIO. The

purpose of GBO is to collaborate on and develop two programs through filing of an investigational new

drug application (‘‘IND’’) and/or conducting proof of concept studies using our technology platform.

During 2013, GVK BIO made an initial capital contribution of $500,000 in exchange for a 10% interest

in GBO, and we made an initial capital contribution of a sub-license to all the intellectual property

controlled by us related to two specified programs in exchange for a 90% interest. Under the terms of

the agreement, GVK BIO may make additional capital contributions. The GVK BIO percentage

interest in GBO may change from the initial 10% to up to 50%, depending on the amount of its total

capital contributions. During November 2014, GVK BIO  made an additional capital contribution which

increased its interest in GBO to 17.5%. At specified  times, we will be entitled to buy back from

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GVK BIO the rights to either of these  two  programs. In addition, upon the occurrence of certain
events namely termination of our participation in the programs  either with  or without a change in
control, GVK BIO will be entitled to purchase or obtain our interest in GBO. GVK BIO will have
operational control of GBO and we will have strategic and scientific control.

GBO is consolidated in our financial statements for  the year ended December 31, 2014, which
means that we included its assets and liabilities  in our balance sheets and its  expenses in our statements
of operations, less those amounts comprising the non-controlling  interest. The consolidation of GBO
did not have a material effect on our consolidated  financial position or  results  of operations.

Operating Expenses

The following table summarizes our operating expenses for the years ended December 31, 2014,

2013 and 2012:

General and administrative . . . . . . . . . . . .
Research and development . . . . . . . . . . . .

$15,119,000
49,425,000

$16,793,000
50,182,000

$15,707,000
52,762,000

Total operating expenses . . . . . . . . . . . . . .

$64,544,000

$66,975,000

$68,469,000

2014

2013

2012

General and Administrative Expenses

General and administrative expenses consist principally  of  salaries and related costs for executive

and other administrative personnel, including stock-based compensation and travel expenses. Other
general and administrative expenses include facility-related costs, communication  expenses, insurance
and professional fees for legal, patent review, consulting and accounting services.

We anticipate that our general and administrative  expenses will decrease  in the short-term  but

would increase in the future with the  continued research and development and potential
commercialization of our product candidates. These increases will likely include  increased costs for
insurance, costs related to the hiring of additional personnel and payments to  outside consultants
among other expenses. Additionally, if and when we believe a regulatory  approval of a product
candidate appears likely, we anticipate an increase in payroll and expense as a result of our preparation
for commercial operations, especially as it relates  to  the sales and  marketing of our product candidates.

Research and Development Expenses

Our research and development expenses consist primarily of costs incurred for  the development of

our product candidates, which include:

(cid:129) employee-related expenses, including salaries, benefits, travel and stock-based compensation

expense;

(cid:129) expenses incurred under agreements with CROs  and investigative  sites that conduct our clinical

trials and preclinical studies;

(cid:129) the cost of acquiring, developing and manufacturing clinical trial  materials;

potential and our available funds.

(cid:129) direct expenses for maintenance of research equipment, clinical trial insurance  and other

supplies; and

(cid:129) costs associated with preclinical activities and regulatory operations.

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Research and development costs are expensed as  incurred. License fees and milestone payments

we make related to in-licensed products and technology are expensed if it is determined  that they have

no alternative future use. We record costs for some development  activities, such as clinical trials, based

on an evaluation of the progress to completion of specific tasks using data such as patient enrollment,

clinical site activations or information provided to us by  our vendors.

Research and development activities are central to our business  model. Product candidates in later

stages of clinical development generally have higher development costs than those in earlier stages of

clinical development, primarily due to the increased size and duration  of later-stage clinical trials. We

plan to decrease our research and development expenses in the short-term by reducing the number of

product candidates currently under development.

To date, our research and development expenses have related primarily to the development of

rigosertib. We do not currently utilize a formal time allocation system to capture expenses on a

project-by-project basis because we are organized and record expense by functional department and our

employees may allocate time to more than one development project. Accordingly, we do not allocate

expenses to individual projects or product candidates, although we do allocate some portion of our

research and development expenses by functional area and by compound.

The following table summarizes our research and development expenses by functional area for the

years ended December 31, 2014, 2013 and 2012:

Twelve Months Ended December 31,

2014

2013

2012

Pre-clinical & clinical development . . . . . .

$25,304,000

$28,693,000

$20,957,000

Milestones & royalties . . . . . . . . . . . . . . .

—

— 13,500,000

Personnel related . . . . . . . . . . . . . . . . . . .

10,336,000

9,059,000

4,876,000

Manufacturing, formulation &

development . . . . . . . . . . . . . . . . . . . . .

Stock-based compensation . . . . . . . . . . . .

Consulting fees . . . . . . . . . . . . . . . . . . . .

5,069,000

2,986,000

5,731,000

4,967,000

3,170,000

4,293,000

3,362,000

6,645,000

3,422,000

$49,425,000

$50,182,000

$52,762,000

It is difficult to determine with certainty the duration and completion costs of our current or

future preclinical programs and clinical trials of our product candidates, or if, when or to what extent

we will generate revenues from the commercialization and sale of  any of our product candidates that

obtain regulatory approval. We may never  succeed in achieving regulatory approval for any of our

product candidates. The duration, costs and timing of clinical trials and development of our product

candidates will depend on a variety of factors, including the uncertainties of future clinical and

preclinical studies, uncertainties in clinical trial enrollment rate and significant and changing

government regulation. In addition, the probability of success for each product candidate will depend

on numerous factors, including competition, manufacturing capability and commercial viability. We will

determine which programs to pursue and how much to fund each program in response to the scientific

and clinical success of each product candidate, an assessment of each product candidate’s commercial

Change in Fair Value of Warrant Liability

We issued Series G preferred stock warrants in connection with a loan and security agreement  and

also with the issuance of Series G preferred stock. The warrants are classified as liabilities since they

might require a transfer of assets because of the redemption features of the underlying preferred stock.

Immediately prior to the consummation of the IPO, the Series G Preferred Stock warrants outstanding

were automatically converted into Common  Stock warrants (after giving effect to the one-for-1.333
reverse stock split). The value of the warrants is adjusted to current fair value at each reporting period
end using the Black-Scholes model.

Interest Expense and Other Income, Net

Other income, net consists principally of interest income earned on cash and cash equivalent

balances, foreign exchange gains and losses and income earned on our sale of New Jersey state net
operating losses in 2012.

Interest expense for the years ended December 31, 2014, 2013 and 2012 consisted of cash paid and

non-cash interest expense related to  our prior loan from  a stockholder and convertible promissory
notes payable, as well as a charge of $8.2 million for the  unamortized contingent beneficial conversion
feature upon conversion of those promissory notes into shares  of Series I  convertible preferred stock in
2012.

Accretion of Preferred Stock

We accounted for the redemption of premium and issuance costs on our preferred stock using the

interest method, accreting such amounts to preferred stock from the date of issuance to the earliest
date of redemption. Immediately prior to the consummation of  our IPO, all series of our preferred
stock converted into common stock.

Critical Accounting Policies and Significant  Judgments and  Estimates

This management’s discussion and analysis of our financial condition and results of operations is
based on our consolidated financial statements,  which have been prepared in accordance  with GAAP.
The preparation of these financial statements requires us to make estimates and judgments that affect
the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent
assets and liabilities in our consolidated financial statements.  On an ongoing basis, we evaluate our
estimates and judgments, including those related to accrued expenses,  revenue recognition, deferred
revenue and stock-based compensation. We  base  our estimates on historical  experience, known trends
and events and various other factors that we  believe to be reasonable under the circumstances,  the
results of which form the basis for making judgments about the carrying values of assets and liabilities
that are not readily apparent from other  sources. Actual results may differ from these estimates under
different assumptions or conditions.

While our significant accounting policies are described  in the notes to our consolidated financial
statements appearing elsewhere in this Annual Report, we believe the following accounting policies to
be most critical to the judgments and estimates used in the preparation of our consolidated financial
statements.

Revenue Recognition

We generate revenue primarily through collaborative research and  license  agreements. The terms

of these agreements contain multiple deliverables, which may include licenses, research and
development activities, participation in joint steering committees and product  supply. The terms of
these agreements may include nonrefundable upfront license fees, payments for  research and
development activities, payments based  upon the achievement of specified  milestones, royalty payments
based on product sales derived from the collaboration, and  payments for  supplying product. In all
instances, we recognize revenue only when the price is fixed  or determinable, persuasive evidence of an
arrangement exists, delivery has occurred  or the services have been rendered, collectability of the
resulting receivable is reasonably assured and we have  fulfilled  our performance obligations under the
contract.

Effective January 1, 2011, we adopted the Financial Accounting Standards Board, or FASB,

Accounting Standards Update, or ASU, No. 2009-13, Multiple-Deliverable Revenue Arrangements , or

ASU 2009-13. This guidance, which applies  to  multiple-element  arrangements entered into or materially

modified on or after January 1, 2011, amends the  criteria for separating and allocating consideration in

a multiple-element arrangement by modifying the fair value  requirements for revenue recognition and

eliminating the use of the residual value method. The selling prices of deliverables under an

arrangement may be derived using third-party evidence, or TPE, or a best estimate of selling price, or

BESP, if vendor-specific objective evidence of fair value, or VSOE, is not available. The objective of

BESP is to determine the price at which we would transact a sale if the element within the license

agreement was sold on a standalone basis. Establishing BESP involves management’s judgment and

takes into account multiple factors, including market conditions and company-specific factors, such as

those factors contemplated in negotiating the agreements as well as internally developed models that

include assumptions related to market  opportunity, discounted cash flows, estimated development costs,

probability of success, and the time needed to commercialize a product candidate pursuant to the

license. In validating the BESP, management considers whether  changes in key assumptions used to

determine the BESP will have a significant effect on the allocation of the arrangement consideration

between the multiple deliverables. We may use third-party valuation specialists to assist us in

determining BESP. Deliverables under the arrangement are separate units of accounting  if (i) the

delivered item has value to the customer on a standalone basis and (ii)  if the arrangement includes a

general right of return relative to the delivered item, delivery or performance of the undelivered item is

considered probable and substantially within our control. The arrangement consideration that is fixed

or determinable at the inception of the arrangement is allocated to the separate units of accounting

based on their relative selling prices. The appropriate revenue recognition model is applied to each

element and revenue is accordingly recognized as each element is delivered. Management exercises

significant judgment in determining whether a deliverable is a separate unit of accounting.

In determining the separate units of accounting,  we evaluate whether the license has standalone

value to the collaborator based on consideration of the relevant facts and circumstances for each

arrangement. Factors considered in this determination include the research and development

capabilities of the collaborator and the availability of relevant research expertise in  the marketplace. In

addition, we consider whether or not (i) the collaborator can use the license for its  intended purpose

without the receipt of the remaining deliverables,  (ii) the value of the license is  dependent on the

undelivered items and (iii) the collaborator or other vendors can provide the undelivered items.

Under a collaborative research and license agreement, a steering  committee is typically responsible

for overseeing the general working relationships, determining the protocols to be followed in the

research and development performed, and evaluating the results from the continued development of

the product. We evaluate whether our participation in joint steering committees is  a substantive

obligation or whether the services are considered inconsequential or perfunctory. The factors we

consider in determining if our participation in a joint steering committee is a substantive obligation

include: (i) which party negotiated or requested the steering committee, (ii) how frequently the steering

committee meets, (iii) whether or not  there are any penalties or other recourse if we do not attend the

steering committee meetings, (iv) which  party has decision making authority on the steering committee

and (v) whether or not the collaborator has the requisite  experience and expertise associated with the

research and development of the licensed intellectual property.

For all periods presented, whenever we determine that an element is delivered over a  period of

time, we recognize revenue using either a proportional performance model or a straight-line model

over the period of performance, which is typically the research and development term. We typically use

progress achieved under our various CRO contracts as the measure of performance. At each reporting

period, we reassess our cumulative measure  of  performance and make appropriate adjustments, if

necessary. We recognize revenue using the  proportional performance model whenever we  can make

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reasonably reliable estimates of the level of effort required  to  complete our  performance obligations
under an arrangement. We recognize revenue under the proportional performance model at each
reporting period by multiplying the total expected payments under  the contract, excluding royalties and
payments contingent upon achievement of milestones, by  the ratio of the level  of effort incurred to
date to the estimated total level of effort required to complete the performance obligations under the
arrangement. Revenue is limited to the lesser of  the cumulative amount  of payments received or the
cumulative amount of revenue earned, as determined using the proportional performance  model  as of
each reporting period. Alternatively, if we cannot make reasonably reliable estimates of the level of
effort required to complete our performance obligations under an arrangement, then  we recognize
revenue under the arrangement on a  straight-line basis over the period expected to complete  our
performance obligations.

Incentive milestone payments may be triggered  either by the results of our research efforts or by

events external to us, such as regulatory approval to market  a  product. We recognize consideration that
is contingent upon achievement of a milestone in its entirety as revenue in the period in which the
milestone is achieved, but only if the consideration earned from the achievement of a milestone meets
all the criteria for the milestone to be considered substantive at the inception of  the arrangement. For
a milestone to be considered substantive, the consideration  earned by achieving the milestone must  be
commensurate with either our performance to achieve the milestone or the  enhancement of  the value
of the item delivered as a result of a specific outcome resulting from our performance to achieve the
milestone, relate solely to our past performance and  be  reasonable relative to all  deliverables and
payment terms in the collaboration agreement.

For events for which the occurrences  are contingent solely upon the passage of time or are the
result of performance by a third party, we will recognize the  contingent payments as revenue when
payments are earned, the amounts are fixed and  determinable and collectability is  reasonably  assured.

We will recognize royalty revenue, if any, as  earned in accordance  with the contract terms when

third-party sales can be reliably measured and  collectability is reasonably assured.

We recognized revenue of $0.3 million, $4.2 million and $45.5  million during the  years  ended
December 31, 2014, 2013 and 2012, respectively, under our  license and collaboration agreement with
Baxter. We recognized revenue of $456,000, $577,000 and $503,000 during  the years ended
December 31, 2014, 2013 and 2012, respectively, under our  license and collaboration agreement with
SymBio. The remaining revenue recognized during the  years  ended December 31, 2014, 2013 and 2012
of $0, $0 and $197,000, respectively, pertained to research and development services provided under
research grants. The Baxter and SymBio agreements are the only agreements that are being accounted
for under ASU 2009-13.

Research and Development Expenses

Research and development costs are charged to expense as incurred and  include, but are not
limited to, license fees related to the acquisition of  in-licensed products, employee-related expenses,
including salaries, benefits and travel, expenses incurred  under agreements with CROs and investigative
sites that conduct clinical trials and preclinical studies, the cost of  acquiring, developing and
manufacturing clinical trial materials,  facilities, depreciation  and other expenses, which include direct
and allocated expenses for rent and maintenance of facilities, insurance and  other supplies and costs
associated with preclinical activities and regulatory operations.

We record costs for certain development activities, such as  clinical trials, based on our evaluation

of the progress to completion of specific tasks  using data such as  patient enrollment, clinical site
activations, or information provided to us by our vendors on their actual costs incurred. Payments for
these activities are based on the terms of  the individual arrangements, which may differ from the

pattern of costs incurred, and are reflected  in the consolidated  financial statements as prepaid or

accrued research and development expense, as the case may be.

Income Taxes

We recorded deferred tax assets of $131.6 million as of December 31, 2014, which have been fully

offset by a valuation allowance due to uncertainties surrounding our  ability to realize these tax benefits.

The deferred tax assets are primarily composed of federal and  state tax net operating loss, or NOL,

carry forwards and research and development tax credit carry forwards. As of December 31, 2014, we

had federal NOL carry forwards of $160.3 million, state NOL carry forwards of $141.0 million and

research and development tax credit carry forwards of $56.6 million available to reduce  future taxable

income, if any. These federal NOL carry forwards will begin to expire at various dates starting in 2022.

The state NOL carry forwards will begin to expire at  various dates starting in  2016. In general, if we

experience a greater than 50 percentage point aggregate change in ownership of specified significant

stockholders over a three-year period, utilization of our pre-change NOL carry forwards will be subject

to an annual limitation under Section 382 of  the U.S. Internal Revenue Code of  1986, as amended, or

the Code, and similar state laws. Such limitations may result in expiration of a portion of the NOL

carry forwards before utilization and  may be substantial. We have determined that we have experienced

ownership changes in the past and approximately $24.0 million of our NOL carry forwards are subject

to an annual limitation under Section 382 of  the Code. If we experienced a Section 382 ownership

change in connection with the offering or as a result of future changes in our stock ownership, some of

which changes are outside our control, the tax benefits related to the NOL carry forwards may be

further limited or lost.

Stock-Based Compensation

Prior to April 2013, our stock option awards were accounted for as liability awards as we, through

our chairman of the board of directors, who is also  a significant stockholder, had  established a pattern

of settling these awards for cash. Accordingly, we measured stock-based compensation expense at the

end of each reporting period based on the intrinsic value of all outstanding vested stock options on

each reporting date and recognized expense based  on any increases in their intrinsic value since the  last

measurement date to the extent the stock options vested. The intrinsic value represented the difference

between the current fair value of our common stock and the  contractual exercise prices of the awards.

On April 23, 2013, we distributed a notification letter to all holders of stock options under our

2007 Equity Compensation Plan advising them  that cash settlement transactions would no longer occur,

unless, at the time of a cash settlement transaction, the option holder has held the common stock

issued upon exercise of options for a period of greater than six months prior to such  cash settlement

transaction and that any such settlement would be at the fair value  of  the common stock on the date of

such sale. Following this notification,  we reclassified options outstanding under our 2007 Equity

Compensation Plan from liabilities to stockholders’ deficit within our consolidated balance sheets.

Upon issuing the notification, a modification to the liability awards occurred and the awards are now

accounted for as equity awards from the  date of modification with compensation expense fixed at fair

value at the modification date. As a result, we reclassified the amount of stock-based compensation

liability at the modification date to additional paid-in capital. The modification date fair value is

recognized over the remaining service period, generally the vesting period, on  a straight-line  basis. The

fair value of the modified awards was estimated on the modification date using the intrinsic value

model. The grant date fair value of awards granted after the modification is estimated using the Black-

Scholes valuation model, net of estimated forfeitures. Awards granted  to  non-employees will also be

valued using the Black-Scholes valuation model and will be subject to periodic adjustment until the

underlying equity instruments vest.

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Clinical Trial Expense

As part of the process of preparing our consolidated financial statements, we are required to

estimate our accrued expenses. Our clinical trial accrual process is designed to account for expenses

resulting from our obligations under contracts with vendors, consultants and CROs and clinical site

agreements in connection with conducting clinical trials. The financial terms of these contracts are

subject to negotiations, which vary from contract to contract and may result in payment flows that do

not match the periods over which materials or services are provided to us under such contracts. Our

objective is to reflect the appropriate clinical trial expenses in  our consolidated financial statements by

matching the appropriate expenses with the period in  which services are provided and efforts are

expended. We account for these expenses according to the progress of the trial as measured by patient

progression and the timing of various aspects of the trial. We determine accrual estimates through

financial models that take into account discussion with applicable personnel and outside service

providers as to the progress or state of completion of trials, or the services completed. During the

course of a clinical trial, we adjust our clinical expense recognition  if actual results differ from our

estimates. We make estimates of our  accrued expenses as of each balance sheet date in our

consolidated financial statements based on the facts and circumstances known to us at that time. Our

clinical trial accrual and prepaid assets are dependent, in part, upon the receipt of timely and accurate

reporting from CROs and other third-party vendors. Although we do not expect our estimates to be

materially different from amounts actually incurred, our understanding of the status  and timing  of

services performed relative to the actual  status and timing of services performed may vary and may

result in us reporting amounts that are too high or too low for any particular period.

JOBS Act

In April 2012, the JOBS Act was enacted. Section 107 of the JOBS Act provides that an

‘‘emerging growth company’’ can take advantage of an extended transition period for complying with

new or revised accounting standards. Thus, an  ‘‘emerging growth company’’ can delay the adoption of

certain accounting standards until those standards would otherwise apply to private companies. We

have irrevocably elected not to avail ourselves of this extended transition period and, as a result, we

will adopt new or revised accounting standards on the relevant dates on which adoption of such

standards is required for other companies.

We record stock-based compensation expense as a  component  of research and development

expenses or general and administrative expenses, depending on the function performed by the optionee.
For the years ended December 31, 2014,  2013 and 2012, we allocated  stock-based compensation as
follows:

General and administrative . . . . . . . . . . . . .
. . . . . . . . . . . . .
Research and development

$2,082,000
2,986,000

$4,845,000
3,170,000

$ 7,199,000
6,645,000

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$5,068,000

$8,015,000

$13,844,000

2014

2013

2012

Fair Value Estimates

Since April 23, 2013, we estimate the fair value  of  share-based awards to employees and directors

using the Black-Scholes option pricing model. The Black-Scholes  model requires the input of highly
complex and subjective assumptions, including (a) the expected stock price volatility, (b) the calculation
of the expected term of the award, (c) the risk free interest  rate and (d) expected dividends. Due to
our limited operating history and a lack of company specific historical  and implied volatility data, we
based our estimate of expected volatility on the historical volatility of a group of similar companies that
are publicly traded. When selecting these public companies on which  we have based its expected stock
price volatility, we selected companies with  comparable characteristics to us, including enterprise value,
risk profiles, position within the industry, and with historical share price information sufficient to meet
the expected life of the stock-based awards. The historical volatility data was computed using the daily
closing prices for the selected companies’ shares during the  equivalent period of the calculated
expected term of the stock-based awards. Due to our lack of sufficient historical data, we will continue
to apply this process until a sufficient amount of historical information regarding the volatility of our
own stock price becomes available. We estimate the  expected life of our employee stock options using
the ‘‘simplified’’ method, whereby, the expected life  equals the arithmetic average of the vesting term
and the original contractual term of the option. The  risk-free interest rates for periods within  the
expected life of the option are based  on the  U.S. Treasury yield curve in effect during the period the
options were granted. We have never paid, and do not expect  to  pay dividends in the foreseeable
future.

Prior to April 23, 2013, we were required to estimate the fair value of  the common stock

underlying our stock-based awards when performing the  fair value calculations using the intrinsic value
method at each reporting date. In the absence of a public trading market for our common stock, on
each grant date, we developed an estimate of the  fair value of our common stock by engaging an
independent third-party valuation firm to assist our board of directors in determining the fair value of
the common stock underlying our stock-based awards.  We  determined the fair value of our common
stock using methodologies, approaches and assumptions consistent with  the American Institute of
Certified Public Accountants, or AICPA, Audit and Accounting Practice  Aid Series: Valuation of
Privately Held Company Equity Securities Issued as Compensation, or the AICPA Practice Guide. All
options to purchase shares of our common stock were  granted with an exercise price per share no less
than the fair value per share of our common stock underlying those options on the date of grant, based
on the information known to us on the date of grant. Accordingly, under the liability method of
accounting, we did not record any stock-based compensation expense on the  grant dates of  our options.
However, under the liability method, the liability for all outstanding vested stock-based awards  was
adjusted through our statement of operations,  based on the current  estimated fair value of our common
stock at each reporting date.

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Results of Operations

Comparison of Years Ended December 31, 2014 and  2013

Revenue . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

Year  ended December 31,

2014

2013

Change

$

800,000

$ 4,753,000

$(3,953,000)

General and administrative . . . . . . . . .
Research and development . . . . . . . . .

15,119,000
49,425,000

16,793,000
50,182,000

1,674,000
757,000

Total operating expenses . . . . . . . . .

64,544,000

66,975,000

2,431,000

Loss from operations . . . . . . . . . . . . . . .
Change in fair value of warrant liability . .
Interest expense . . . . . . . . . . . . . . . . . . .
Other income (expense), net . . . . . . . . . .

(63,744,000)
20,000
(2,000)
(50,000)

(62,222,000)
42,000
(4,000)
63,000

Net loss before income taxes . . . . . . . . .
Income taxes . . . . . . . . . . . . . . . . . . . . .

(63,776,000)
19,000

(62,121,000)
435,000

(1,522,000)
(22,000)
2,000
(113,000)

(1,655,000)
416,000

Net loss . . . . . . . . . . . . . . . . . . . . . . . . .

$(63,795,000) $(62,556,000) $(1,239,000)

Revenues

Revenues decreased by $4.0 million in 2014 when compared to 2013  primarily  as a result of
research and development revenue under the Baxter agreement  being recognized on a proportional
performance basis which was ongoing  throughout the  2013 period but was completed during the first
quarter of 2014.

General and administrative expenses

General and administrative expenses decreased by $1.7  million,  or 10.0%, to $15.1  million for the
year ended December 31, 2014 compared to $16.8 million for the year ended December 31, 2013. The
decrease was primarily caused by a decrease in stock-based compensation expense of $2.8 million
resulting from a decrease in the number and  value of  options  vesting during the 2014 period compared
to the 2013 period. The decrease was also caused by  a reduction of $0.2 million in facilities related
costs as total company headcount decreased to 50 at the end of 2014 from 64 at the end of 2013. These
decreases were partially offset by an  increase of $0.1 million in consulting and professional fees and an
increase  of $1.2 million in insurance,  board of  directors fees, and investor relations expenses as a result
of operating as a public company for all of 2014 and only  five months of 2013.

Research and development expenses

Research and development expenses decreased by $0.8 million, or 1.5%, to $49.4 million for the

year ended December 31, 2014 compared to $50.2 million for the year ended December 31, 2013. This
decrease was driven primarily lower preclinical and clinical development costs  of $3.4 million as a result
of the completion of the pancreatic program in December 2013 and our higher-risk MDS program in
early 2014. This decrease was partially offset  by $1.4 million  higher consulting fees in the 2014 period
related to analyzing clinical trial results and  preparing for  meetings with  regulatory authorities. The
decrease was also partially offset by $0.8 million higher personnel and related costs due to the hiring of
nine research & development employees in throughout the 2013 period, most  of whom were employees
for the entire 2014 period, and $0.5 million of  severance related to the reduction in force in August
2014. Manufacturing expenses were $0.1 million higher  as a result of increased validation  activities,
vendor qualification efforts, and formulation development activities in  the 2014 period. Stock-based

compensation expense was $0.2 lower in 2014 compared to 2013, due primarily to a decrease in the

number and value of options vesting in the 2014 period compared to the 2013 period, which was offset

by the accelerated vesting of some outstanding options in connection with the  reduction in force during

the third quarter of 2014.

Change in fair value of warrant liability

The fair value of the warrant liability decreased by $20,000 during  the year ended December 31,

2014 compared to a decrease of $42,000 during the year ended December 31, 2013, which in both cases

resulted in a commensurate increase in other income. The decrease in the  fair value of the warrant

liability in 2014 was primarily due to the revaluation of the warrants outstanding.

Other income, net

Other income (expense,) net, decreased by $113,000 during the year ended December 31, 2014

compared to the year ended December 31, 2013. This decrease was driven primarily by $57,000 less

interest income in the 2014 period due to lower cash & marketable securities balances and $56,000

higher foreign exchange losses in the 2014 period as a result of the timing of intercompany charges

from and payments to our German subsidiary under the service agreement between the entities which

was executed in late 2013.

Comparison of Years Ended December 31, 2013 and 2012

Year ended  December 31,

2013

2012

Change

Revenue . . . . . . . . . . . . . . . . . . . . . . .

$ 4,753,000

$ 46,190,000

$(41,437,000)

Operating expenses:

General and administrative . . . . . . . .

Research and development . . . . . . . .

16,793,000

50,182,000

15,707,000

52,762,000

(1,086,000)

2,580,000

Total operating expenses . . . . . . . .

66,975,000

68,469,000

1,494,000

Loss from operations . . . . . . . . . . . . . .

(62,222,000)

(22,279,000)

(39,943,000)

Change in fair value of warrant liability .

Interest expense . . . . . . . . . . . . . . . . . .

Other income (expense), net . . . . . . . . .

42,000

(4,000)

63,000

367,000

(8,608,000)

608,000

(325,000)

8,604,000

(545,000)

Net loss before income taxes . . . . . . . . .

(62,121,000)

(29,912,000)

(32,209,000)

Income taxes . . . . . . . . . . . . . . . . . . . .

435,000

—

(435,000)

Net loss . . . . . . . . . . . . . . . . . . . . . . . .

$(62,556,000) $(29,912,000) $(32,644,000)

Revenues

Revenues decreased by $41.4 million in 2013 when compared  to  2012 primarily as a result of

entering into the Baxter agreement in 2012. Of this decrease, $42.4 million was attributable to the

revenue recognized upon signing of the Baxter agreement in 2012, offset by the revenue recognized

related to development services under the Baxter agreement, which increased by $1.1 million to

$4.2 million in 2013 from $3.1 million  in 2012. Research funding decreased by $0.2 million in  2013

compared to 2012.

General and administrative expenses

General and administrative expenses increased by $1.1 million, or  6.9%, to $16.8 million for the

year ended December 31, 2013 compared to $15.7 million  for the year ended December 31, 2012. The

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increase  was attributable to an increase of $1.6 million  as a result of general and administrative
headcount growing from 10 at the end  of 2012 to 15 at the  end of 2013. Insurance, meetings, and
facilities-related expenses increased $1.6 million as total Company-wide  headcount grew from 46 at
December 31, 2012 to 64 at December 31, 2013  and  because of increased operating costs as a result of
becoming a public company. Professional fees remained relatively flat as fees  related to negotiating the
Baxter agreement in 2012 were replaced by fees related to being a  public company in 2013. These
increases in general and administrative expenses were offset by a decrease of  $2.4 million in stock-
based compensation which was primarily the result  of  a change in accounting method during 2013.

Research and development expenses

Research and development expenses decreased by $2.6 million, or 4.9%, to $50.2 million for the

year ended December 31, 2013 compared to $52.8 million for the year ended December 31, 2012. This
decrease was driven primarily by a $12.5 million milestone paid to Temple University as a result  of
entering into the Baxter agreement and a  $1.0 million payment to LLS in 2012, as well as a decrease in
stock-based compensation of $3.5 million in 2013 compared to 2012 due primarily  to  a change in
accounting method during 2013. These decreases were partially offset by  an increase in pre-clinical and
clinical trial expenses of $6.3 million; an increase of $4.2 million related to a change in research and
development headcount to 46 at December 31, 2013  from 36 at  December 31, 2012; an increase of
$3.0 million in manufacturing, formulation, and development  costs; and an increase of $0.9  million
related to consulting services in connection with clinical development.

Change in fair value of warrant liability

The fair value of the warrant liability decreased by $42,000 during  the year ended December 31,

2013 compared to a decrease of $0.4  million  during  the year ended December 31, 2012, which in  both
cases resulted in a commensurate increase in other income. The decrease in the fair value of the
warrant liability in 2013 was primarily due to the revaluation of the warrants outstanding. The decrease
in the fair value of the warrant liability in 2012  was  primarily due a decrease of $1.0 million  related to
the expiration of Series G convertible preferred stock warrants  in 2012,  offset by an  increase of
$0.6 million related to the revaluation of the warrants outstanding.

Interest expense

Interest expense decreased by $8.6 million  during  the year ended December 31, 2013 compared to

the year ended December 31, 2012. In July 2012, the holders of our convertible notes elected to
convert their outstanding principal and accrued interest into shares of Series I convertible preferred
stock. At the time of the conversion,  there was $8.2 million in unamortized contingent  beneficial
conversion features that we immediately expensed.

Other income, net

Other income, net, decreased by $0.5 million during the year ended  December 31,  2013 compared

to the year ended December 31, 2012. This decrease  was driven  by a $0.5 million gain recognized on
our sale of New Jersey state NOL carry forwards  in 2012.

Liquidity and Capital Resources

Since our inception, we have incurred net losses and generally  negative cash flows from our

operations. We incurred net losses of $63.8 million, $62.6  million,  and $29.9 million for the years ended
December 31, 2014, 2013 and 2012, respectively. Since inception our  accumulated deficit is
$294.6 million.

Cash Flows

2012:

The following table summarizes our cash flows for the years ended December  31, 2014, 2013 and

Year Ended December 31,

2014

2013

2012

Net cash (used in) provided by:

Operating activities . . . . . . . . . . . . . .

$(57,648,000) $(61,384,000) $ 1,633,000

Investing activities . . . . . . . . . . . . . . .

Financing activities . . . . . . . . . . . . . . .

Effect of foreign currency translation .

39,772,000

1,463,000

(14,000)

(40,599,000)

(279,000)

80,464,000

77,460,000

1,000

—

Net (decrease) increase in cash and cash

equivalents . . . . . . . . . . . . . . . . . . . .

$(16,427,000) $(21,518,000) $78,814,000

Net cash (used in) provided by operating activities

Net cash used in operating activities was $57.6 million for the year ended December 31, 2014 and

consisted primarily of a net loss of $63.8  million, and a decrease in deferred revenue of $0.8 million

related to the recognition of deferred revenue  under the  Baxter and SymBio collaboration agreements,

which was partially offset by $5.5 million of noncash increases primarily related to stock compensation

expense of $5.1 million and depreciation of $0.4 million. The cash used in operating activities was also

impacted by the changes in operating assets and liabilities including a decrease in prepaid expenses and

other current assets of $1.2 million which was the result of the timing of expense  recognition and

payments to our contract research and manufacturing organizations, and an increase of $0.3 million in

accounts payable and accrued expenses,  which was primarily due to the timing of our payments of

clinical trial costs related to the ongoing trials and development of our  product candidates.

Net cash used in operating activities was $61.4 million for the year ended December 31, 2013 and

consisted primarily of a net loss of $62.6  million and a decrease in deferred revenue of $4.6 million

related to the recognition of deferred revenue  under the  Baxter and SymBio collaboration agreements.

These were offset by $8.4 million of noncash increases primarily related to stock compensation expense

of $8.0 million and depreciation of $0.4 million.  The cash  used in operating activities was  also impacted

by the changes in operating assets and liabilities including an increase in prepaid expenses and other

current assets of $2.7 million which was the  result of the timing of expense recognition and payments to

our contract research and manufacturing organizations, and an increase of $0.1 million  in accounts

payable and accrued expenses, which was primarily due to the  timing of our payments of clinical trial

costs related to the ongoing trials and development of our product candidates.

Net cash provided by (used in) investing activities

Net cash provided by investing activities for the year ended December 31, 2014 was $39.8 million,

and consisted of maturities of marketable  securities of $40.0 million, offset by purchases of fixed assets

Net cash used in investing activities for the year ended  December 31, 2013 was $40.6 million, and

consisted of the purchases of marketable securities of $40.0 million and purchases of fixed assets of

of $0.2 million.

$0.6 million.

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Net cash provided by financing activities

Net cash provided by financing activities was $1.5 million  for  the year ended December 31, 2014,

which was due to $1.0 million in proceeds from the exercise of stock options and the  $0.5 million
investment by our collaboration partner, GVK BIO.

Net cash provided by financing activities was $80.5 million  for  the year ended December 31, 2013,
which was primarily due to $79.8 million  in net proceeds from the IPO, the $0.5 million investment by
our collaboration partner, GVK BIO, and $0.2 million in proceeds upon the exercise  of stock options.

Operating and Capital Expenditure Requirements

We have not achieved profitability since our inception and we expect to continue to incur net
losses for the foreseeable future. We expect  our cash expenditures to decrease in the near term as we
plan to scale down our operations in  order to reduce spending on general  and administrative functions,
research and development, and certain clinical trials.

On July 30, 2013, we completed our IPO. We received net proceeds  of  $79.8 million from the sale,

net of underwriting discounts and commissions and other estimated  offering expenses.

As a publicly traded company, we have  incurred and will continue  to  incur significant legal,
accounting and other expenses that we were not required to incur as a private company. In addition,
the Sarbanes-Oxley Act of 2002, as well as  rules adopted by the  SEC and the NASDAQ  Stock Market,
require  public companies to implement specified corporate governance practices. We expect these rules
and regulations will increase our legal and financial  compliance costs and  will make some activities
more time-consuming and costly. We estimate that we  incur approximately $2.0 million to $3.0 million
of incremental costs per year associated with being a publicly  traded company.

We do not have the funding resources necessary to carry  out all of  our proposed operating
activities. We will need to obtain additional financing in the  future in order to fully fund rigosertib or
any other product candidates through the regulatory approval process. Accordingly, we may delay our
planned clinical trials, including the planned new Phase 3  clinical trial of rigosertib IV in higher-risk
MDS patients, until we secure adequate  additional funding. If we seek to proceed with a new clinical
trial without additional funding, we may receive questions or comments from the FDA, fail  to  obtain
IRB approval, or find it more difficult to enroll  patients in the trial.  Additionally, we plan to scale
down our operations in order to reduce spending on general  and administrative functions, research and
development, and other clinical trials.

We are exploring various dilutive and non-dilutive sources of  funding, including equity and debt
financings, strategic alliances,  business development  and other sources. However, we may not be able to
obtain additional funding on favorable terms, if at all. If we are  unable to secure adequate additional
funding, we will continue to delay, scale-back or eliminate certain of our planned research, drug
discovery and development activities and  certain other aspects  of  our operations and our business until
such time as we are successful in securing adequate additional  funding. As a result, our business,
operating results, financial condition and  cash flows  may be materially and adversely affected. We  will
incur substantial costs beyond the present and planned clinical trials in order to file a New  Drug
Application (NDA) for rigosertib. The nature, design, size and cost of further studies will depend in
large part on the outcome of preceding  studies and  discussions with  regulators.

Our future capital requirements will depend on many  factors, including:

(cid:129) timing and success of our clinical trials for rigosertib;

(cid:129) continued progress of and increased spending  related to our research and development activities;

(cid:129) conditions in the capital markets and the biopharmaceutical industry, particularly with respect to

raising capital or entering into strategic arrangements;

(cid:129) progress with preclinical experiments and clinical trials, including regulatory approvals  necessary

for advancement and continuation of our development programs;

(cid:129) changes in regulatory requirements and guidance of the FDA and other regulatory authorities,

which may require additional clinical trials to evaluate safety and/or efficacy, and thus have

significant impacts on our timelines, cost projections, and financial requirements;

(cid:129) ongoing general and administrative expenses related to our reporting obligations under the

Exchange Act;

(cid:129) cost, timing, and results of regulatory reviews and approvals;

(cid:129) costs of pending or future legal proceedings, claims, lawsuits and  investigations;

(cid:129) success, timing, and financial consequences of any existing or future collaborative, licensing  and

other arrangements that we may establish, including potential granting of licenses to one or

more of our programs in various territories, or otherwise monetizing one or more of our

(cid:129) cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual

programs;

property rights;

(cid:129) costs of commercializing any of our other product candidates;

(cid:129) technological and market developments;

(cid:129) cost of manufacturing development; and

(cid:129) timing and volume of sales of products for which we obtain marketing approval.

If we are unable to successfully raise sufficient additional capital, through future debt or equity

financings, product sales, or through strategic and collaborative ventures with third parties, we will not

have sufficient cash flows and liquidity to fund  our planned business operations. In that event, we may

be forced to limit many, if not all, of our programs  and consider other means of creating  value for our

stockholders, such as licensing to others the development and commercialization of products that  we

consider valuable and would otherwise likely develop ourselves. If we are unable to raise the necessary

capital, we may be forced to curtail all of our activities and, ultimately, potentially cease operations.

Even if we are able to raise additional  capital, such financings may  only be available on unattractive

terms, or could result in significant dilution of stockholders’ interests. The consolidated financial

statements do not include any adjustments relating to recoverability and classification of recorded asset

amounts or the amounts and classification of liabilities that might be necessary should we be unable to

continue in existence.

Please see ‘‘Risk Factors’’ for additional risks associated with our substantial capital requirements.

Contractual Obligations and Commitments

The following is a summary of our long-term contractual cash obligations as of December 31, 2014:

Operating lease obligations .

$171,000

$136,000

$35,000

Total contractual obligations .

$171,000

$136,000

$35,000

Total

Less than

one year

1 - 3  Years

3  - 5 Years

More than

5 Years

$—

$—

$—

$—

86

87

Purchase Commitments

We have no material non-cancelable purchase commitments with contract manufacturers or service

providers as we have generally contracted on  a cancelable purchase order basis.

Milestone, Royalty-Based and Other Commitments

Under our license agreement with Temple to develop, manufacture, market and sell rigosertib
related compounds and derivatives, we are obligated to pay annual  license maintenance payments, as
well as 25% of any sublicensing fees we  receive. We are  also required to pay a low-single digit
percentage of our net sales of rigosertib as a  royalty. During the year ended  December 31,  2012, in
connection with the execution of the Baxter  agreement, we became obligated to make a payment to
Temple in the amount of $12.5 million.  The payment was recorded as research and development
expense.

In May 2010, we entered into an agreement with LLS under which we were to conduct research in

return for milestone payments, up to $10.0 million through 2013. This milestone payment amount was
subsequently reduced to $8.0 million pursuant to an amendment signed in January 2013. In the event
that the research is successful, we must proceed with commercialization of the product or repay the
amount funded. In addition, we will owe to LLS regulatory and commercial milestone payments and
royalties based on net sales of the product not to exceed three times the aggregate amount funded, or
$24.0 million. During the year ended December 31,  2012, in connection with the execution of the
Baxter agreement, we paid $1.0 million to LLS  and we have recorded  this amount in research and
development expenses. This payment reduced the maximum contingent  payment obligation under this
agreement to $23.0 million at December 31, 2012, and there were no changes during  the years ended
December 31, 2014 and 2013.

Because the achievement and timing of these milestones and net sales is  not fixed and

determinable, our commitments under these agreements have not been included  on our consolidated
balance sheets or in the Contractual Obligations table above.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined by applicable SEC regulations.

Segment Reporting

We view our operations and manage our business in one segment,  which is the identification and

development of oncology therapeutics.

Recent Accounting Pronouncements

In July 2013, the Financial Accounting Standards Board (the ‘‘FASB’’) issued guidance clarifying
that an unrecognized tax benefit, or a portion  of an unrecognized tax benefit, should be presented in
the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward,  a
similar tax loss, or a tax credit carryforward  if such settlement is required  or expected in the event the
uncertain tax benefit is disallowed. In situations where a net operating loss  carryforward, a similar tax
loss, or a tax credit carryforward is not available at the reporting date under the tax  law of the
applicable jurisdiction or the tax law of the jurisdiction does not require, and the entity does not intend
to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented  in the
financial statements as a liability and should not be netted  with the deferred tax asset. The guidance
was effective for fiscal years, and interim periods within  those years, beginning after  December 15,
2013. We adopted these new provisions during  the quarter beginning January 1, 2014. The guidance did
not have an impact on our consolidated financial position, results of  operations or cash flows.

In May 2014, the FASB issued guidance on revenue from contracts with customers that will

supersede most current revenue recognition guidance. The underlying principle is that an  entity  will

recognize revenue to depict the transfer of goods  or services to customers at an amount that the entity

expects to be entitled to in exchange for those goods  or services. The guidance is effective for the

interim and annual periods beginning on or  after December 15, 2016, and early adoption is not

permitted. The guidance permits the use  of  either a retrospective or cumulative effect transition

method. We have not yet selected a transition method and are  currently evaluating the impact of  the

amended guidance on our consolidated financial position, results of operations  and related disclosures.

In August 2014, the FASB issued guidance on determining when  and how to disclose going-

concern uncertainties in the financial statements. The new standard requires management to perform

interim and annual assessments of an entity’s ability to continue as a going concern within one year of

the date the financial statements are issued. An entity must  provide certain disclosures if conditions or

events raise substantial doubt about the entity’s ability to continue as  a  going concern. The guidance

applies to all entities and is effective for annual periods ending after December 15, 2016, and interim

periods thereafter, with early adoption permitted. We are evaluating the potential impact of the new

guidance on our quarterly reporting process and our consolidated financial  position, results of

operations and related disclosures.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risks in the ordinary course of our business. These market risks are

principally limited to interest rate fluctuations on our cash, cash equivalents and investments.

We had cash and cash equivalents of $43.6 million at December 31, 2014, consisting primarily of

funds in cash and money market accounts. The primary objective of our investment activities is to

preserve principal and liquidity while maximizing income without significantly increasing risk. We do

not enter into investments for trading or speculative purposes. Due to the  short-term nature of our

investment portfolio, we do not believe an immediate 10%  increase  or decrease in interest rates would

have a material effect on the fair market value of our portfolio, and accordingly we do not expect our

operating results or cash flows to be materially affected by a sudden  change in market interest rates.

We transact business in various countries and have exposure to fluctuations  in foreign currency

exchange rates. Foreign exchange gains and losses arise in the translation of foreign-denominated assets

and liabilities, which may result in realized  and unrealized gains or losses  from exchange rate

fluctuations. Our functional currency is the US dollar, and our main foreign exchange exposure, if any,

results from changes in the exchange rate  between the US dollar and the Euro. Currently, our exposure

to foreign currency risk is insignificant.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements and supplementary data required by this item  are listed in Item  15—

‘‘Exhibits and Financial Statement Schedules’’ of this Annual Report.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND

FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of  our Chief Executive Officer and our Chief Financial

Officer, evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2014.

88

89

The term ‘‘disclosure controls and procedures,’’ as defined in Rules 13a-15(e) and 15d-15(e) under the
Securities Exchange Act of 1934, as amended (the ‘‘Exchange Act’’),  means controls and other
procedures of a company that are designed to ensure that information required to be disclosed by a
company in the reports that it files or submits under the Exchange Act is recorded, processed,
summarized and reported, within the time periods specified in  the SEC’s rules and forms. Disclosure
controls and procedures include, without  limitation, controls  and procedures designed to ensure that
information required to be disclosed by  a company in the reports that it files or submits under the
Exchange Act is accumulated and communicated to the company’s management, including its principal
executive and principal financial officers, as appropriate to allow timely decisions  regarding required
disclosure. Based on the evaluation of our disclosure controls and procedures as of December 31, 2014,
our Chief Executive Officer and Chief  Financial Officer  concluded that,  as of such date, disclosure
controls and procedures were effective [at the  reasonable assurance level].

Internal Control Over Financial Reporting

This annual report does not include an attestation report of our registered public accounting firm
regarding internal control over financial  reporting. Management’s report  was not subject to attestation
by our registered public accounting firm pursuant to exemptions provided to issuers that are
non-accelerated filers or qualify as an ‘‘emerging growth company,’’ as defined in Section 2(a) of the
Securities Act of 1933, or the Securities Act,  as modified by the Jumpstart Our Business Startups Act
of 2012, or the JOBS Act.

Our management is responsible for establishing and maintaining adequate internal control over

financial reporting. Management assessed the effectiveness of our internal control over financial
reporting as of December 31, 2014. In making  this assessment, management used the  criteria set forth
by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal
Control—Integrated Framework issued in 2013.  Based upon the assessments, management has
concluded that as of December 31, 2014 our internal control over financial reporting was effective to
provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements in accordance with GAAP.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal control over financial reporting during the last fiscal
quarter that has materially affected, or is reasonably likely to materially affect, our  internal control over
financial reporting.

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information with respect to this item will be set forth in the Proxy Statement for the 2015 Annual

Meeting of Stockholders (the ‘‘Proxy Statement’’) under the headings ‘‘Election of Directors,’’

‘‘Executive Officers,’’ ‘‘Section 16(a) Beneficial  Ownership Reporting Compliance,’’ ‘‘Code  of Ethics’’

and ‘‘Corporate Governance’’ and is  incorporated herein by reference. The Proxy Statement will be

filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report.

ITEM 11. EXECUTIVE COMPENSATION

Information with respect to this item will be set forth in the Proxy Statement under the headings

‘‘Executive Compensation’’ and ‘‘Director Compensation,’’ and is incorporated herein by reference. The

Proxy Statement will be filed with the SEC within 120 days after the end of the fiscal year covered by

this Annual Report.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS  AND MANAGEMENT AND

RELATED STOCKHOLDER MATTERS

Information with respect to this item will be set forth in the Proxy Statement under the headings

‘‘Security Ownership of Certain Beneficial Owners and Management’’ and ‘‘Executive  Compensation,’’

and is incorporated herein by reference. The Proxy Statement will be filed with the SEC within

120 days after the end of the fiscal year covered by this Annual Report.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED  TRANSACTIONS, AND  DIRECTOR

INDEPENDENCE

Information with respect to this item will be set forth in the Proxy Statement under the headings

‘‘Certain Relationships and Related Party Transactions’’ and ‘‘Corporate Governance’’  and is

incorporated herein by reference. The Proxy Statement will be filed with the SEC within 120 days after

the end of the fiscal year covered by this Annual Report.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

Information with respect to this item will be set forth in the Proxy Statement under the heading

‘‘Ratification of the Selection of Independent Registered Public Accounting Firm,’’ and is incorporated

herein by reference. The Proxy Statement will be filed  with the SEC within 120 days after the end of

the fiscal year covered by this Annual Report.

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) (1) Financial Statements: See Index to Consolidated Financial  Statements on page F-1.

(3) Exhibits: See Exhibits Index on pages 72 to 74.

90

91

SIGNATURES

Signature

Title

Date

/s/ E. PREMKUMAR REDDY, PH.D.

E. Premkumar Reddy, Ph.D.

Director

March 30, 2015

/s/ ANNE M. VANLENT

Anne M. VanLent

Director

March 30, 2015

Pursuant to the requirements of Section  13 or 15(d) of the Securities Exchange Act of 1934, the

registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly
authorized.

Date: March 30, 2015

Onconova Therapeutics, Inc.

By: /s/ RAMESH KUMAR

Ramesh Kumar
Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934,  this report has been signed

below by the following persons on behalf of the registrant and in the capacities  and on the dates
indicated:

Signature

Title

Date

/s/ RAMESH KUMAR, PH.D.

Ramesh Kumar, Ph.D.

Director, President and Chief Executive
Officer (Principal Executive Officer)

March 30, 2015

/s/ AJAY BANSAL

Ajay Bansal

/s/ MARK GUERIN

Mark Guerin

Chief Financial Officer (Principal
Financial Officer)

March 30, 2015

Vice President, Financial Planning &
Accounting (Principal Accounting
Officer)

March 30, 2015

/s/ MICHAEL B. HOFFMAN

Michael B. Hoffman

/s/ HENRY S. BIENEN, PH.D.

Henry S. Bienen, Ph.D.

/s/ JEROME E. GROOPMAN, M.D.

Jerome E. Groopman, M.D.

/s/ VIREN MEHTA

Viren Mehta

Chairman, Board of Directors

March 30, 2015

March 30, 2015

March 30, 2015

March 30, 2015

Director

Director

Director

92

93

Exhibit
Number

Exhibits Index

Exhibit Description

3.1

3.2

4.1

4.2

4.3

Tenth Amended and Restated Certificate of  Incorporation  of  Onconova Therapeutics, Inc.
(Incorporated by reference to Exhibit 3.1 to  the Company’s Current Report on Form 8-K filed
on July 25, 2013).

Amended and Restated Bylaws of Onconova  Therapeutics,  Inc. (Incorporated by reference
to Exhibit 3.1 to the Company’s Current Report on Form  8-K filed on July 25, 2013).

Form of Certificate of Common Stock  (Incorporated by reference to Exhibit 4.1 to
Pre-Effective Amendment No. 1 the Company’s Registration Statement on Form S-1 filed  on
July 11, 2013.)

Eighth Amended and Restated Stockholders’ Agreement, effective as  of July 27, 2012, by
and among Onconova Therapeutics, Inc. and  certain stockholders named therein
(Incorporated by reference to Exhibit 4.2to Pre-Effective Amendment No. 1 to the Company’s
Registration Statement on Form S-1 filed on July 11, 2013).

Amendment No. 1 to Eighth Amended and  Restated Stockholders’ Agreement, effective
as of July 9, 2013  (Incorporated by reference to Exhibit 4.2 to Pre-Effective  Amendment No. 1
the Company’s Registration Statement on Form  S-1 filed on July 11, 2013).

10.1* Development and License Agreement, effective as of September 19, 2012, by and between
Onconova Therapeutics, Inc. and Baxter Healthcare SA (Incorporated by reference to
Exhibit 10.1 to Pre-Effective Amendment No. 2 the Company’s Registration Statement on
Form S-1 filed on July 18, 2013).

10.2*

10.3*

10.4*

License Agreement, effective as  of July 5, 2011, by and between Onconova Therapeutics,
Inc. and SymBio Pharmaceuticals Limited (Incorporated by reference to Exhibit 10.2 to
Pre-Effective Amendment No. 2 the Company’s Registration Statement on Form S-1 filed  on
July 18, 2013).

First Amendment to License Agreement, effective  as of September 2, 2011, by and
between Onconova Therapeutics, Inc. and SymBio  Pharmaceuticals Limited (Incorporated
by reference to Exhibit 10.3 to the Company’s Registration Statement on Form S-1 filed on
June 14, 2013).

License Agreement, effective as  of January 1,  1999, by and  between Onconova
Therapeutics, Inc. and Temple University—Of The Commonwealth System of Higher
Education  (Incorporated by reference to Exhibit 10.4 to  the Company’s Registration Statement
on Form S-1 filed on June 14, 2013).

10.5* Amendment to License Agreement, effective as of September 1, 2000, by and between

Temple University—Of The Commonwealth System  of  Higher Education and Onconova
Therapeutics, Inc. (Incorporated by reference to Exhibit 10.5 to  the Company’s Registration
Statement on Form S-1 filed on June 14, 2013).

10.6* Amendment #1 to Exclusive License Agreement, effective as of March 21, 2013, by and

between Temple University—Of The Commonwealth  System of  Higher Education and
Onconova Therapeutics, Inc. (Incorporated by reference to Exhibit 10.6 to the  Company’s
Registration Statement on Form S-1 filed on June 14, 2013).

10.7* Definitive Agreement, effective as of May 12, 2010, by  and between Onconova

Therapeutics, Inc. and The Leukemia and Lymphoma Society (Incorporated by reference to
Exhibit 10.7 to the Company’s Registration Statement on Form S-1 filed on June 14, 2013).

Exhibit

Number

Exhibit Description

10.8*

First Amendment to Definitive Agreement, effective as of June 23, 2011, by and between

Onconova Therapeutics, Inc. and The Leukemia and Lymphoma Society (Incorporated by

reference to Exhibit 10.8 to the Company’s Registration Statement on Form S-1 filed on

June 14, 2013).

10.9*

Second Amendment to Definitive Agreement, effective as of May 29, 2012, by and

between Onconova Therapeutics, Inc. and The  Leukemia and Lymphoma Society

(Incorporated by reference to Exhibit 10.9 to the Company’s Registration Statement on

Form S-1 filed on June 14, 2013).

10.10* Third Amendment to Definitive Agreement, effective as of January 5, 2013, by and

between Onconova Therapeutics, Inc. and The  Leukemia and Lymphoma Society

(Incorporated by reference to Exhibit 10.10 to the Company’s Registration Statement on

Form S-1 filed on June 14, 2013).

10.11

Termination of Agreement, effective as of February 5, 2013, by and between Onconova

Therapeutics, Inc. and The Leukemia and Lymphoma Society (Incorporated by reference to

Exhibit 10.11 to the Company’s Registration Statement on Form S-1 filed on June 14, 2013).

10.12*

Limited Liability Company Agreement of GBO, LLC, dated as of December 12, 2012, by

and between Onconova Therapeutics, Inc. and GVK Biosciences Private Limited

(Incorporated by reference to Exhibit 10.12 to the Company’s Registration Statement on

Form S-1 filed on June 14, 2013).

10.13+ Onconova Therapeutics, Inc. 2007 Equity Compensation Plan, and forms of agreement

thereunder (Incorporated by reference to Exhibit 10.13  to Pre-Effective Amendment No. 1 the

Company’s Registration Statement on Form S-1 filed on July 11, 2013).

10.14+ Employment Agreement, effective as of April 1, 2007, by  and between Onconova

Therapeutics, Inc. and Ramesh Kumar, Ph.D., including extension letter, dated April 10,

2010, and Employment Agreement Renewal, dated January 10, 2013 (Incorporated by

reference to Exhibit 10.14 to the Company’s Registration Statement on Form S-1 filed on

June 14, 2013).

10.15+ Amendment to Employment Agreement, effective as of December 21, 2012, by and

between Onconova Therapeutics, Inc. and Ramesh Kumar, Ph.D. (Incorporated by reference

to Exhibit 10.15 to the Company’s Registration Statement on Form S-1 filed on June 14,

10.16+ Employment Agreement, effective as of September 1, 2012, by and between Onconova

Therapeutics, Inc. and Thomas McKearn, M.D., Ph.D. (Incorporated by reference to

Exhibit 10.16 to the Company’s Registration Statement on Form S-1 filed on June 14, 2013).

10.17+ Amendment to Employment Agreement, effective as of April 9, 2013, by and between

Onconova Therapeutics, Inc. and Thomas McKearn,  M.D., Ph.D. (Incorporated by reference

to Exhibit 10.17 to the Company’s Registration Statement on Form S-1 filed on June 14,

2013).

2013).

10.18+ Employment Agreement, effective as of March 20, 2013, by and between Onconova

Therapeutics, Inc. and Ajay Bansal (Incorporated by reference to Exhibit 10.22  to the

Company’s Registration Statement on Form S-1 filed on June 14, 2013).

94

95

101.PRE

XBRL Taxonomy Extension Presentation  Linkbase Document

+ Indicates management contract or compensatory plan.

*

Confidential treatment has been requested with respect to certain portions of  this  exhibit. Omitted

portions have been filed separately with the Securities and Exchange Commission.

Exhibit
Number

Exhibit Description

Exhibit

Number

Exhibit Description

10.19+ Consulting Agreement, effective as of January 1, 2012,  by and between Onconova

101.LAB

XBRL Taxonomy Extension Labels Linkbase Document

Therapeutics, Inc. and E. Premkumar Reddy, Ph.D.,  including Consultant Agreement
Renewal, dated February 27, 2013 (Incorporated by reference to Exhibit 10.23  to the
Company’s Registration Statement on Form S-1 filed on June 14, 2013).

10.20+ Form of Indemnification Agreement entered into by and between Onconova Therapeutics,

Inc. and each director and executive officer (Incorporated by reference to Exhibit 10.24 to
Pre-Effective Amendment No. 1 the Company’s Registration Statement on Form S-1 filed  on
July 11, 2013).

10.21+ Onconova Therapeutics, Inc. 2013  Equity Compensation Plan, and forms of agreement

thereunder (Incorporated by reference to Exhibit 10.25 to Pre-Effective  Amendment No. 1 the
Company’s Registration Statement on Form S-1 filed on July 11, 2013).

10.22+ Onconova Therapeutics, Inc. 2013  Performance Bonus Plan (Incorporated by reference to
Exhibit 10.26 to Pre-Effective Amendment No.  1 the Company’s Registration Statement on
Form S-1 filed on July 11, 2013).

10.23

Sales Agreement dated October 8,  2014 by and between Onconova  Therapeutics,  Inc., and
Cantor Fitzgerald & Co. (incorporated by reference to Exhibit 1.1 to the Company’s
Registration Statement on Form S-3 filed  on October 8, 2014).

10.24+ Employment Agreement, effective as of January  1, 2007, by and between Onconova

Therapeutics, Inc. and Dr. Manoj Maniar, including Employment  Agreement Renewals,
dated March 30, 2010 and January 10, 2013  (Incorporated by reference to Exhibit 10.20 to
the Company’s Registration Statement on Form  S-1 filed on June 14, 2013).

10.25+ Amendment to Employment Agreement, effective as of  December 21, 2012, by and

between Onconova Therapeutics, Inc. and Dr. Manoj Maniar  (Incorporated by reference to
Exhibit 10.21 to the Company’s Registration Statement on Form S-1 filed on June 14, 2013).

10.26+ Employment Agreement, effective as of January  12, 2015, by and between Onconova

21.1

23.1

31.1

31.2

32.1

32.2

Therapeutics, Inc. and Dr.Steven M. Fruchtman

Subsidiaries of Onconova Therapeutics, Inc.

Consent of Ernst & Young, LLP.

Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley
Act of 2002.

Certification of Principal Financial Officer pursuant to Section  302 of the Sarbanes-Oxley
Act of 2002.

Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Financial Officer pursuant to 18  U.S.C. Section 1350  as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS

XBRL Instance

101.SCH

XBRL Taxonomy Extension Schema Document

101.CAL

XBRL Taxonomy Extension Calculation  Linkbase Document

101.DEF

XBRL Taxonomy Extension Calculation Linkbase Document

96

97

(This page has been left blank intentionally.)

ONCONOVA THERAPEUTICS, INC. AND SUBSIDIARIES

Index to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Balance Sheets, December 31, 2014 and 2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Operations, Years  ended December 31, 2014, 2013 and 2012 . . . . . .

Consolidated Statements of Comprehensive Loss,  Years ended December 31, 2014, 2013 and

2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-5

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity,

Years ended December 31, 2014, 2013 and 2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Cash Flows, Years ended  December 31, 2014, 2013 and 2012 . . . . . .

Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

F-2

F-3

F-4

F-6

F-7

F-8

F-1

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Onconova Therapeutics, Inc.

We have audited the accompanying consolidated balance sheets of Onconova Therapeutics, Inc. as
of December 31, 2014 and 2013, and the related consolidated statements of operations, comprehensive
loss, redeemable convertible preferred stock and stockholders’  equity, and cash flows for each of the
three years in the  period ended December 31, 2014. These financial statements are  the responsibility of
the Company’s management. Our responsibility is to express an opinion  on these financial statements
based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting
Oversight Board (United States). Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial  statements are free  of material misstatement. We
were not engaged to perform an audit of the Company’s internal control over financial reporting. Our
audits included consideration of internal control over financial reporting  as a basis for designing audit
procedures that are appropriate in the circumstances, but  not for the  purpose of expressing an opinion
on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express
no such opinion. An audit also includes examining,  on a test basis, evidence supporting the amounts
and disclosures in the financial statements, assessing the accounting principles used and significant
estimates made by management, and evaluating the overall consolidated financial statement
presentation. We believe that our audits provide a reasonable basis for  our  opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects,
the consolidated financial position of Onconova Therapeutics, Inc. at  December 31, 2014 and 2013,  and
the consolidated results of its operations and its cash  flows for each of the three  years  in the period
ended December 31, 2014, in conformity with U.S. generally accepted accounting principles.

Philadelphia, Pennsylvania
March 30, 2015

/s/ Ernst & Young LLP

Onconova Therapeutics, Inc.

Consolidated Balance Sheets

December 31,

2014

2013

Assets

Current assets:

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 43,582,000

$ 60,009,000

Marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Prepaid expenses and other current assets . . . . . . . . . . . . . . . . . . . .

Restricted cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—

3,198,000

125,000

39,994,000

4,387,000

—

Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46,905,000

104,390,000

Property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Restricted cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Other non-current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

420,000

—

12,000

626,000

125,000

12,000

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 47,337,000

$ 105,153,000

Liabilities and stockholders’ equity

Current liabilities:

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

$

Accrued expenses and other current  liabilities . . . . . . . . . . . . . . . . .

Warrant liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deferred revenue, non-current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4,027,000

5,777,000

—

455,000

10,259,000

13,455,000

1,000

3,710,000

5,820,000

20,000

788,000

10,338,000

13,909,000

6,000

Total liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23,715,000

24,253,000

Commitments and contingencies

Stockholders’ equity:

Preferred stock, $0.01 par value, 5,000,000 authorized at

December 31, 2014 and 2013, none issued and outstanding at

Common stock, $0.01 par value, 75,000,000 authorized at

December 31, 2014 and 2013, 21,703,173 and 21,467,482 shares

December 31, 2014 and 2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—

—

issued and outstanding at December 31, 2014 and  2013 . . . . . . . . .

217,000

215,000

Additional paid in capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

317,122,000

311,093,000

Accumulated other comprehensive income . . . . . . . . . . . . . . . . . . . .

(13,000)

1,000

Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(294,578,000)

(230,896,000)

Total Onconova Therapeutics, Inc. stockholders’ equity . . . . . . . . . . . .

Non-controlling interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22,748,000

874,000

80,413,000

487,000

Total stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23,622,000

80,900,000

Total liabilities and stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . .

$ 47,337,000

$ 105,153,000

F-2

F-3

See accompanying notes to consolidated financial statements.

Onconova Therapeutics, Inc.

Consolidated Statements of Operations

Onconova Therapeutics, Inc.

Consolidated Statements of Comprehensive Loss

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

Years  ended  December 31,

2014

2013

2012

Years ended  December 31,

2014

2013

2012

$

800,000

$ 4,753,000

$ 46,190,000

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(63,795,000) $(62,556,000) $(29,912,000)

General and administrative . . . . . . . . . . . . . . . . . . . . .
Research and development . . . . . . . . . . . . . . . . . . . . . .

15,119,000
49,425,000

16,793,000
50,182,000

15,707,000
52,762,000

Total operating expenses . . . . . . . . . . . . . . . . . . . . . .

64,544,000

66,975,000

68,469,000

Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in fair value of warrant liability . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other income, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(63,744,000)
20,000
(2,000)
(50,000)

(62,222,000)
42,000
(4,000)
63,000

(22,279,000)
367,000
(8,608,000)
608,000

Net loss before income taxes . . . . . . . . . . . . . . . . . . . . . .
Income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(63,776,000)
19,000

(62,121,000)
435,000

(29,912,000)
—

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss attributable to non-controlling interest . . . . . . . . .

(63,795,000)
113,000

(62,556,000)
13,000

(29,912,000)
—

Net loss attributable to Onconova Therapeutics, Inc . . . . .
Accretion of redeemable convertible  preferred stock . . . . .

(63,682,000)
—

(62,543,000)
(2,320,000)

(29,912,000)
(3,953,000)

Net loss applicable to common stockholders . . . . . . . . . . .

$(63,682,000) $(64,863,000) $(33,865,000)

Net loss per share of common stock, basic and diluted . . .

$

(2.94) $

(6.12) $

(15.35)

Basic and diluted weighted average shares outstanding . . .

21,653,536

10,594,227

2,206,888

Other comprehensive income, before tax:

Foreign currency translation adjustments, net

. . . . . . . .

Other comprehensive (loss) income, net of tax . . . . . . . . .

(14,000)

(14,000)

1,000

1,000

Comprehensive loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(63,809,000)

(62,555,000)

(29,912,000)

Comprehensive loss attributable to non-controlling

interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

113,000

13,000

Comprehensive loss attributable to Onconova

Therapeutics, Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(63,696,000) $(62,542,000) $(29,912,000)

—

—

—

See accompanying notes to consolidated financial statements.

See accompanying notes to consolidated financial statements.

F-4

F-5

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity

Onconova Therapeutics, Inc.

Onconova Therapeutics, Inc.

Consolidated Statements of Cash Flows

Preferred Stock

Stockholders’ Equity (Deficit)

Shares

Amount

Shares

Amount

Common  Stock

Additional
Paid in
Capital

Accumulated
other

Accumulated comprehensive Non-controlling

deficit

income

interest

Total

11,227,169 $ 119,997,000
—

—

2,167,928 $ 22,000 $

—

—

— $(138,441,000)
— (29,912,000)

$

3,030,303
—

47,796,000
—

—
438,556

—
4,000

—
4,690,000

Exchange  of convertible

debt and preferred stock .

2,433,328

26,767,000

Beneficial conversion

—

—

—

—

221,399

2,802,000

—

—

—

3,953,000

—

—

—

—

—

—

—

—

—

—

3,943,000

(2,835,000)

—

—

—

8,176,000

—

(3,953,000)

16,912,199

201,315,000

2,606,484

26,000

10,021,000

(168,353,000)

— (62,543,000)

—

—

—
—
—

—

—

—

—

—
—
—

—

2,320,000

—

—

—
81,204
—

—

—

—

—

—
1,000
—

—

—
194,000
5,462,000

— 14,482,000

—

(2,320,000)

(16,912,199)

(203,635,000) 12,838,127

129,000

203,502,000

— 5,941,667

59,000

79,752,000

—
—

—
—

—

—

—

—

—

—

—

—

—

1,000
—
—

—

—

—

—

$

—
—

—
—

—

—

—

—

—

—

—

$(138,419,000)
(29,912,000)

—
4,694,000

3,943,000

(2,835,000)

—

—

8,176,000

(3,953,000)

(158,306,000)

(13,000)

(62,556,000)

500,000

500,000

—
—
—

—

—

—

—

1,000
195,000
5,462,000

14,482,000

(2,320,000)

203,631,000

79,811,000

—
—

—

—

—

—

—

—

—

—
—
—

—

—

—

—

.

.

.

.

.

.

Balance at January 1, 2012 .
Net  loss .
.
.
Issuance of preferred stock,
.
net of issuance costs .
.
Exercise of stock options .
.
Proceeds from stockholder

.

.

in  connection with
settlement of  stock
.
option  exercises

.

.

.
Settlement of stock  option
.
.
Issuance of preferred  stock
upon exercise of warrants

liabilities

.

.

.

.

.

.

.

.

.

.

feature on  convertible
.
.
debt .

.
.
Accretion of  preferred
stock to  redemption
.
.
value .

.

.

.

.

.

.

.

.

.

Balance at December 31,
.
.
.

2012 .

.

.

.

.

.

.

Net  loss .
.
Contribution from

.

.

.

.

.

.

.

non-controlling interest

.

.

.

.

.

.

.

.

.

.

income .

Other  comprehensive
.

.
.
.
.
Exercise of stock options .
Stock-based compensation .
Reclassification of stock

.

.

.

.

.

.

.

.

.

.

.

option  liability .
.
Accretion of  preferred
stock to  redemption
.
.
value .
Conversion convertible
preferred stock  into
.
common stock .

.

.

.

.

.

.
Issuance of common stock,
.
net of issuance costs .

.

.

Balance at December 31,
.
.
.

2013 .

.

.

.

.

.

.

Net  loss .
.
Contribution from

.

.

.

.

.

.

.

.

.

.
non-controlling interest
.
Other  comprehensive loss
Exercise of stock options .
.
Stock-based compensation .

.

.

.

.

—

—

—

—
—
—
—

— 21,467,482

215,000

311,093,000

(230,896,000)

1,000

487,000

80,900,000

—

—
—
—
—

—

—

— (63,682,000)

—

(113,000)

(63,795,000)

—
—
235,691
—

—
—
2,000
—

—
—
961,000
5,068,000

—
—
—
—

—
(14,000)
—
—

500,000
—
—
—

500,000
(14,000)
963,000
5,068,000

Balance at December 31,
.
.
.

2014 .

.

.

.

.

.

.

.

.

— $

— 21,703,173 $217,000 $317,122,000 $(294,578,000)

$(13,000)

$ 874,000

$ 23,622,000

See accompanying notes to consolidated  financial statements.

See accompanying notes to consolidated financial statements.

F-6

F-7

Operating activities:

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(63,795,000) $(62,556,000) $(29,912,000)

Adjustment to reconcile net loss to net cash (used in) provided by

operating activities:

Depreciation and amortization . . . . . . . . . . . . . . . . . . . . . . . . .

Loss on asset disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amortization of deferred financing fees . . . . . . . . . . . . . . . . . . .

Amortization of debt discount

. . . . . . . . . . . . . . . . . . . . . . . . .

Change in fair value of warrant liabilities . . . . . . . . . . . . . . . . . .

Treasury note discount amortization . . . . . . . . . . . . . . . . . . . . .

Stock compensation expense . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changes in assets and liabilities:

Grants receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Year Ended December 31,

2014

2013

2012

434,000

446,000

(20,000)

(6,000)

5,068,000

(42,000)

(4,000)

8,015,000

13,844,000

—

—

—

—

—

319,000

3,000

15,000

8,176,000

(367,000)

—

78,000

(15,000)

(97,000)

2,573,000

(41,000)

8,155,000

—

—

—

—

165,000

—

—

—

—

—

—

—

—

—

—

—

—

Prepaid expenses and other current assets . . . . . . . . . . . . . . . .

1,189,000

(2,662,000)

(1,098,000)

Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accrued expenses and other current liabilities . . . . . . . . . . . . .

Other liabilites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

317,000

(43,000)

(5,000)

(787,000)

(1,807,000)

1,894,000

(37,000)

(4,631,000)

Net cash (used in) provided by operating activities . . . . . . . . . . . . .

(57,648,000)

(61,384,000)

1,633,000

Investing activities:

Payments for purchase of property and equipment . . . . . . . . . . . . .

(228,000)

(279,000)

Purchases of marketable securities . . . . . . . . . . . . . . . . . . . . . . . .

Maturities of marketable securities . . . . . . . . . . . . . . . . . . . . . . . .

40,000,000

(609,000)

(39,990,000)

—

Net cash provided by (used in) investing activities . . . . . . . . . . . . . .

39,772,000

(40,599,000)

(279,000)

Financing activities:

Proceeds from initial public offering of common stock, net of

issuance costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Proceeds from the exercise of stock option . . . . . . . . . . . . . . . . . .

Contribution from non-controlling interest . . . . . . . . . . . . . . . . . . .

Reverse stock split cash paid in lieu of fractional shares

. . . . . . . . .

Proceeds from stockholder in connection with settlement of stock

option exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Settlement of stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Proceeds from the exercise of warrants . . . . . . . . . . . . . . . . . . . . .

Proceeds from the sale of Series H preferred stock . . . . . . . . . . . . .

Proceeds from the sale of Series J preferred stock . . . . . . . . . . . . .

Proceeds from stockholder loan and convertible debt

. . . . . . . . . . .

—

79,811,000

963,000

500,000

157,000

500,000

(4,000)

—

—

—

—

—

—

3,943,000

(2,835,000)

2,167,000

400,000

47,796,000

25,824,000

Net cash provided by financing activities . . . . . . . . . . . . . . . . . . . .

1,463,000

80,464,000

77,460,000

Effect of foreign currency translation on cash . . . . . . . . . . . . . . . .

(14,000)

1,000

—

Net (decrease) increase in cash and cash equivalents . . . . . . . . . . . .

Cash and cash equivalents at beginning of period . . . . . . . . . . . . . .

(16,427,000)

60,009,000

(21,518,000)

81,527,000

78,814,000

2,713,000

Cash and cash equivalents at end of period . . . . . . . . . . . . . . . . . .

$ 43,582,000

$ 60,009,000

$ 81,527,000

Supplemental disclosure of cash flow information:

Income taxes paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

— $

435,000

$

—

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

1. Nature of Business

The Company

Onconova Therapeutics, Inc. (the ‘‘Company’’) was incorporated in the State of Delaware on
December 22, 1998 and commenced operations on January 1, 1999.  The  Company’s headquarters are
located in Newtown, Pennsylvania. The Company is a clinical-stage biopharmaceutical company focused
on discovering and developing novel small molecule drug candidates to treat cancer. Using  its
proprietary chemistry platform, the Company has created an extensive library of targeted anti-cancer
agents designed to work against specific cellular pathways that are important to cancer cells.  The
Company believes that the drug candidates in its pipeline have the potential to be efficacious in a
variety of cancers. The Company has three clinical-stage product candidates and several preclinical
programs. To accelerate and broaden  the development of rigosertib, the  Company’s most advanced
product candidate, the Company entered  into  a development and license  agreement in 2012 with
Baxter Healthcare SA (‘‘Baxter’’), a subsidiary of  Baxter International  Inc.,  which grants Baxter certain
rights to commercialize rigosertib in Europe. In 2011, the Company entered into a license agreement,
as subsequently amended, with SymBio Pharmaceuticals Limited (‘‘SymBio’’), which grants SymBio
certain rights to commercialize rigosertib in Japan and Korea. The Company has retained development
and commercialization rights to rigosertib in the rest of the world, including the United States. During
2012, Onconova Europe GmbH was established as a wholly owned subsidiary of the Company for the
purpose of further developing business  in Europe. In April 2013, GBO, LLC, a Delaware limited
liability company, (‘‘GBO’’) was formed pursuant to a  collaboration agreement with GVK  Biosciences
Private Limited, a private limited company located  in India, (‘‘GVK BIO’’)  to collaborate and develop
new programs using the Company’s technology platform through filing of an investigational new drug
application (‘‘IND’’) and /or conducting proof of concept studies using the Company’s technology
platform.

Liquidity

The Company has incurred recurring operating losses since inception. For the year ended

December 31, 2014, the Company incurred  a net loss  of $63,795,000 and as of December 31, 2014, the
Company had generated an accumulated deficit of $294,578,000.  The  Company anticipates operating
losses to continue for the foreseeable  future due to, among other things, costs related to research,
development of its product candidates and  its preclinical programs,  strategic  alliances and its
administrative organization. The Company will require substantial  additional financing to fund its
operations and to continue to execute its strategy.

From its inception through July 2013, the Company raised significant capital through the issuance

of redeemable convertible preferred  stock, par value $0.01 per share, in ten series denominated as
Series A through Series J (‘‘Series A Preferred Stock’’  through ‘‘Series J Preferred Stock,’’ respectively,
and collectively the ‘‘Preferred Stock’’). On July 30, 2013, the Company completed its initial public
offering (the ‘‘IPO’’) of 5,941,667 shares of the  Company’s common stock, par value $0.01 per share
(‘‘Common Stock’’), at a price of $15.00 per share, including 775,000  shares of Common Stock issued
upon the exercise in full by the underwriters  of  their option to purchase additional shares at the same
price to cover over-allotments. The Company received net proceeds of $79,811,000 from the sale, net of
underwriting discounts and commissions and other estimated offering expenses.  Immediately prior to
the consummation of the IPO, all outstanding shares of Preferred Stock automatically converted into
shares of Common Stock at the applicable conversion ratio then in effect. As a result of the conversion,
as of July 30, 2013, the Company had no shares of Preferred  Stock outstanding. See Note 9.

1. Nature of Business (Continued)

During 2015, the Company implemented cost-reduction programs to reduce its operating losses.

These programs may delay, scale-back, or eliminate certain of the Company’s  research and

development activities and other aspects of its operations until such time as the  Company is successful

in securing adequate additional funding. As a result of the cost reduction programs, the Company

estimates that its cash and cash equivalents at December 31, 2014 of $43.6 million will be sufficient to

fund operations through 2015 and for  the first quarter of 2016. The Company  is also  exploring various

dilutive and non-dilutive sources of funding, including equity and debt financings, strategic alliances,

business development and other sources. Such financings would  be  used to fund future research and

development programs, including clinical trials for which the Company  does not currently have the

resources to fund. There can be no assurance, however, that the Company will  be  successful in

obtaining such financing at the level needed to complete its  research and development programs, on

terms acceptable to the Company, or at all, or that the Company will obtain approvals necessary to

market its products or achieve profitability or sustainable, positive cash flow.

2. Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements are prepared in conformity  with accounting  principles

generally accepted in the United States (‘‘GAAP’’). The financial statements include the consolidated

accounts of the Company, its wholly-owned subsidiary,  Onconova Europe GmbH, and GBO. All

significant intercompany transactions have been eliminated.

Operating segments are defined as components of an enterprise about which separate discrete

information is available for evaluation by the chief operating decision maker, or decision-making group,

in deciding how to allocate resources and in assessing performance. The Company views its operations

and manages its business in one segment, which is the identification and development of oncology

Segment Information

therapeutics.

Use of Estimates

The preparation of financial statements in  conformity with GAAP requires management to make

estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses,

other comprehensive income and related  disclosures. On an ongoing basis, management evaluates its

estimates, including estimates related to clinical trial accruals, warrant liability, and allocation of

consideration to multiple element collaborative  arrangements. The Company bases its estimates on

historical experience and other market-specific or other relevant assumptions that it believes to be

reasonable under the circumstances. Actual results may differ from those  estimates or assumptions.

Prior to completion of its IPO on July 30, 2013, the Company utilized estimates and assumptions

in determining the fair value of its Common Stock. The Company granted stock options at exercise

prices not less than the fair value of its Common Stock as determined by the board of directors, with

input from management. Management used the assistance of a third-party valuation firm in estimating

the fair value of the Common Stock. The board of directors  determined the estimated fair  value of the

Common Stock based on a number of objective and subjective factors, including external market

F-8

F-9

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

2. Summary of Significant Accounting Policies (Continued)

2. Summary of Significant Accounting Policies (Continued)

conditions affecting the biotechnology  industry sector and the historic  prices at which the  Company
sold shares of Preferred Stock.

Maintenance and repairs are expensed as incurred. The following estimated useful  lives were used to

depreciate the Company’s assets:

Concentrations of Credit Risk and Off-Balance Sheet Risk

Financial instruments that potentially subject the Company to concentrations of credit risk  are

primarily  cash, cash equivalents, restricted cash and  marketable securities. The Company maintains a
portion of its cash and cash equivalent balances in the form of money market  accounts with financial
institutions that management believes are creditworthy. Marketable securities are invested in U.S.
Treasury obligations. The Company has  no financial instruments with  off-balance sheet  risk of loss.

Cash and Cash Equivalents

The Company considers all highly liquid investments with original or remaining maturity from the

date of purchase of three months or less to be cash equivalents. Cash and cash equivalents include
bank demand deposits, marketable securities with maturities of three months  or less at purchase, and
money market funds that invest primarily in certificates of  deposit, commercial paper and U.S.
government and U.S. government agency obligations. Cash equivalents are reported at  fair value.

Marketable Securities

Marketable securities with original maturities longer than three months but which mature in less
than one year from the balance sheet date  are classified as current assets.  Marketable securities that
mature more than one year from the balance sheet date are classified as noncurrent assets. Marketable
securities that the Company has the intent and ability to hold  to  maturity  are classified as investments
held-to-maturity and are reported at amortized  cost. The difference  between  the acquisition cost and
face values of held-to-maturity investments is amortized over the  remaining  term of the investments
and added to or subtracted from the acquisition cost and interest income. As of December 31, 2014
and 2013, all of the Company’s investments were classified as  held-to-maturity.

Fair Value of Financial Instruments

The carrying amounts reported in the accompanying consolidated financial statements for cash and

cash equivalents, marketable securities, accounts payable and accrued liabilities approximate  their
respective fair values because of the short-term nature of these accounts.  The fair value of the warrant
liability is discussed in Note 4, ‘‘Fair Value  Measurements.’’

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation. Property and equipment

are depreciated using the straight-line method over  the estimated useful lives of the assets. Leasehold
improvements are  amortized over the useful  life of the asset  or the lease term, whichever is shorter.

Lab equipment . . . . . . . . . . . . . .

Software . . . . . . . . . . . . . . . . . .

Computer and office equipment

.

Estimated Useful Life

5 - 6 years

3 years

5 - 6 years

Leasehold improvements . . . . . . .

Shorter of the lease term or estimated useful life

Upon retirement or sale, the cost of the disposed asset and the related accumulated depreciation

are removed from the accounts and any resulting gain or loss is recognized.

The Company reviews long-lived assets for impairment when events or changes in circumstances

indicate that the carrying value of the assets may not be recoverable. Recoverability is measured by

comparison of the assets’ book value to future net undiscounted cash flows that the assets are expected

to generate. If such assets are considered to be impaired, the impairment to be recognized is measured

by the amount by which the book value of the assets exceeds their fair  value, which is measured based

on the projected discounted future net cash flows generated from the  assets. No impairment losses

have been recorded through December 31, 2014.

Restricted Cash

Under one of the Company’s office leases, the Company is required to provide the landlord a

$125,000 letter of credit, which is secured by cash collateral recorded  as restricted cash on the

consolidated balance sheets as of December 31, 2014 and 2013.  The letter of credit expired in March

2015 and the restriction on cash was  discontinued.

Foreign Currency Translation

The reporting currency of the Company and its U.S. subsidiaries is the U.S. dollar. The functional

currency of the Company’s non-U.S. subsidiary is the local currency. Assets and liabilities of the  foreign

subsidiary are translated into U.S. dollars based on exchange  rates at the end of the period. Revenues

and expenses are translated at average exchange rates during the reporting period. Gains and losses

arising from the translation of assets and liabilities are included as a component of accumulated other

comprehensive income. Gains and losses resulting from foreign currency transactions are reflected

within the Company’s results of operations. The Company has not utilized  any foreign currency  hedging

strategies to mitigate the effect of its  foreign currency exposure.

Revenue Recognition

The Company’s revenue is generated primarily through collaborative research and license

agreements. The terms of these agreements contain multiple deliverables which may include

(i) licenses, (ii) research and development  activities, (iii) participation in joint steering committees and

(iv) product supply. The terms of these agreements may  include nonrefundable upfront license fees,

payments for research and development activities, payments based upon the achievement of  certain

milestones, royalty payments based on product sales derived from the collaboration, and payments for

supplying product. In all instances, revenue is recognized only when the price is fixed or determinable,

F-10

F-11

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

2. Summary of Significant Accounting Policies (Continued)

2. Summary of Significant Accounting Policies (Continued)

persuasive evidence of an arrangement exists, delivery has occurred or the  services have been rendered,
collectability of the resulting receivable  is reasonably assured, and the Company has fulfilled  its
performance obligations under the contract.

For arrangements with multiple elements, the Company recognizes revenue in accordance with the
Financial Accounting Standards Board (‘‘FASB’’) Accounting Standards Update (‘‘ASU’’) No. 2009-13,
Multiple-Deliverable Revenue Arrangements (‘‘ASU 2009-13’’), which provides guidance for separating and
allocating consideration in a multiple element arrangement. The selling prices  of deliverables under  an
arrangement may be derived using third-party evidence  (‘‘TPE’’), or a best  estimate of selling price
(‘‘BESP’’), if vendor-specific objective evidence of selling price (‘‘VSOE’’) is not available. The
objective of BESP is to determine the price at which the Company would transact a sale if  the element
within the license agreement was sold on a  standalone  basis. Establishing BESP involves  management’s
judgment and considers multiple factors, including market conditions and company-specific factors,
including those factors contemplated  in negotiating the agreements, as  well as internally developed
models that include assumptions related to market opportunity, discounted cash flows, estimated
development costs, probability of success and the time needed to commercialize a product candidate
pursuant to the license. In validating the BESP, management considers  whether changes in key
assumptions used to determine the BESP will have a  significant effect  on the allocation of the
arrangement consideration between the multiple deliverables. The Company may  use third-party
valuation specialists to assist it in determining BESP. Deliverables  under the arrangement are separate
units of accounting if (i) the delivered item has  value to the customer  on a standalone basis and (ii) if
the arrangement includes a general right of return  relative to the delivered item, delivery or
performance of the undelivered item is considered probable and substantially within the Company’s
control. The arrangement consideration that is fixed or determinable at the inception of the
arrangement is allocated to the separate  units of accounting  based on  their  relative selling prices. The
appropriate revenue recognition model is applied to each element  and revenue is accordingly
recognized as each element is delivered. Management exercises significant judgment in determining
whether a deliverable is a separate unit of accounting.

In determining the separate units of  accounting, the Company evaluates whether the license has

standalone value to the collaborator based on consideration  of  the relevant facts and circumstances for
each arrangement. Factors considered in this determination include the research and development
capabilities of the collaborator and the availability of relevant research expertise in  the marketplace. In
addition, the Company considers whether or not (i) the  collaborator  could  use the license for its
intended purpose without the receipt of the  remaining  deliverables, (ii) the value of the license was
dependent on the undelivered items and (iii) the collaborator or other vendors could provide the
undelivered items.

Under a collaborative research and license agreement,  a steering  committee is typically responsible

for overseeing the general working relationships, determining the protocols to be followed in the
research and development performed and evaluating  the results from  the continued development of the
product. The Company evaluates whether  its participation in joint steering  committees is a substantive
obligation or whether the services are considered inconsequential or perfunctory. The factors the
Company considers in determining if its  participation  in a joint steering committee is a substantive
obligation include: (i) which party negotiated or requested the steering committee, (ii) how frequently
the steering committee meets, (iii) whether or not there are any penalties  or other recourse if the
Company does not attend the steering  committee meetings, (iv) which  party has decision making

authority on the steering committee and (v) whether or not  the collaborator has the requisite

experience and expertise associated with the research and development of the licensed intellectual

property.

Whenever the Company determines that an element is delivered over  a  period of time, revenue is

recognized using either a proportional performance model, if a pattern of performance can be

determined or a straight-line model over the  period of performance,  which is typically the research and

development term. Progress achieved under the Company’s  various clinical research organization

contracts are typically used as the measure of performance when  applying the proportional

performance method. At the end of each reporting period, the Company reassesses its cumulative

measure of performance and makes appropriate adjustments, if  necessary. The Company recognizes

revenue using the proportional performance  model whenever the Company is able to make reasonably

reliable estimates of the level of effort required to complete its performance obligations under an

arrangement. Revenue recognized under the proportional performance model at each reporting period

is determined by multiplying the total expected payments under the contract (excluding royalties and

payments contingent upon achievement of milestones) by the ratio of the level of effort incurred to

date to the estimated total level of effort required to complete the performance obligations under the

arrangement. Revenue is limited to the lesser of the cumulative amount of payments received or the

cumulative amount of revenue earned, as determined using the proportional performance  model  as of

each reporting period. Alternatively, if the Company is not able to make reasonably reliable estimates

of the level of effort required to complete its performance obligations under an arrangement, then

revenue under the arrangement is recognized on a straight-line basis over the period expected  to  be

required to complete the Company’s performance  obligations.

Incentive milestone payments may be triggered either by  the results of the Company’s research

efforts or by events external to it, such as regulatory approval to market a product or attaining

agreed-upon sales levels. Consideration that is contingent upon achievement of a milestone is

recognized in its entirety as revenue in the period in which the milestone is achieved, but only if the

consideration earned from the achievement of a milestone meets all the criteria for  the milestone to be

considered substantive at the inception of the arrangement.  For a milestone  to  be  considered

substantive, the consideration earned by achieving the milestone must (i) be commensurate with either

the Company’s performance to achieve the milestone or the enhancement of the value of the item

delivered as a result of a specific outcome resulting from the Company’s  performance to achieve the

milestone, (ii) relate solely to past performance and (iii) be reasonable relative to all deliverables and

payment terms in the collaboration agreement.

For events for which the occurrences are contingent solely upon the passage of time or are the

result of performance by a third party, the contingent payments will be recognized as revenue when

payments are earned, the amounts are fixed and determinable and collectability is  reasonably  assured.

Royalties are recorded as earned in accordance with  the contract terms when third party sales can

be reliably measured and collectability is reasonably assured.

The Company recognized revenue of $334,000, $4,176,000 and $45,490,000 during the years ended

December 31, 2014, 2013 and 2012, respectively, as a result of its license and collaboration agreement

with Baxter. The Company recognized revenue  of $466,000, $577,000 and $503,000 during the years

ended December 31, 2014, 2013 and 2012, respectively, as a result of its license and collaboration

agreement with SymBio. The remaining revenue recognized during the year ended  December 31, 2012

F-12

F-13

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

2. Summary of Significant Accounting Policies (Continued)

2. Summary of Significant Accounting Policies (Continued)

of $197,000 pertained to research and development services provided by the Company under certain
research grants. The Baxter and SymBio agreements are the only agreements that are being accounted
for under ASU 2009-13. See Note 14, ‘‘License and Collaboration Agreements,’’ for a further
discussion of the agreements with Baxter and SymBio.

Research and Development Expenses

Research and development costs are charged to expense as incurred. These costs include,  but are

not limited to, license fees related to the acquisition of in-licensed products; employee-related expenses,
including salaries, benefits and travel; expenses incurred under agreements with contract research
organizations and investigative sites that conduct clinical  trials and preclinical studies; the cost of
acquiring, developing and manufacturing clinical trial materials; facilities, depreciation and  other
expenses, which include direct and allocated expenses for rent and maintenance of facilities, insurance
and other supplies; and costs associated with preclinical activities and regulatory operations.

Costs  for certain development activities, such  as clinical trials, are recognized based on  an

evaluation of the progress to completion of specific tasks using data such  as patient enrollment, clinical
site activations, or information provided to the Company by its vendors with respect to their actual
costs incurred. Payments for these activities are based on the terms of the individual arrangements,
which may differ from the pattern of costs  incurred, and are reflected in the consolidated financial
statements as prepaid or accrued research  and development expense,  as the case may be.

Comprehensive Loss

Comprehensive loss is defined as the change in equity of a  business enterprise  during  a period

from transactions and other events and circumstances from non-owner sources.

Income Taxes

The Company accounts for income taxes under  the asset and liability method. 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 respective tax bases using
enacted tax rates in effect for the year in which  the differences are expected to affect taxable income.
The deferred tax asset primarily includes  net operating loss and tax credit carry forwards, accrued
expenses not currently deductible and the cumulative temporary differences related to certain research
and patent costs, which have been charged to expense in the accompanying  statements of operations
but have been recorded as assets for income tax purposes. The portion  of any deferred tax asset for
which it is more likely than not that a  tax benefit will not be realized must then be offset  by  recording
a valuation allowance. A full valuation allowance has been established against  all of the deferred tax
assets (see Note 7, ‘‘Income Taxes’’), as it is  more likely  than not that these  assets will not be realized
given the Company’s history of operating losses. The Company  recognizes the  tax benefit  from an
uncertain tax position only if it is more likely  than not to be sustained upon examination based on the
technical merits of the position. The amount for which an exposure exists is measured as the largest
amount of benefit determined on a cumulative probability basis  that the Company believes is more
likely than not to be realized upon ultimate settlement  of the position.

The Company accounted for the redemption premium and issuance costs on its Preferred Stock

using the effective interest method, accreting such amounts to its  Preferred Stock from the date of

issuance to the earliest date of redemption.  Immediately prior to the consummation of the IPO, all

outstanding shares of Preferred Stock automatically converted into shares of Common Stock at the

applicable conversion ratio then in effect.  As a result of the conversion, as of  July 30, 2013, the

Company had no shares of Preferred Stock outstanding. See Note 9.

Preferred Stock

Stock Warrants

Freestanding warrants that are related to the purchase of Stock are classified as liabilities and

recorded at fair value. The warrants are subject to re-measurement at each balance sheet date and any

change in fair value is recognized as a component of change in fair value of warrant liability in the

consolidated statements of operations. See Note 9. The warrants are classified as Level 3 liabilities (see

Note 4 for a discussion of the fair value hierarchy).

Stock-Based Compensation Expense

The Company applies the provisions of FASB Accounting  Standards  Codification (‘‘ASC’’)

Topic 718, Compensation—Stock Compensation (‘‘ASC 718’’), which requires the measurement and

recognition of compensation expense for all stock-based  awards made to employees and non-employees,

including employee stock options.

At certain times throughout the Company’s history, the chairman of the Company’s board of

directors, who is also a significant stockholder of the Company  (the ‘‘Significant Holder’’), afforded

option holders the opportunity for liquidity in transactions in  which options were exercised and the

shares of Common Stock issued in connection therewith were simultaneously purchased by the

Significant Holder (each, a ‘‘Purchase Transaction’’) (See  Note 11). Because the Company had

established a pattern of providing cash settlement  alternatives for option holders, the Company

accounted for its stock-based compensation awards as liability awards. The Company measured liability

awards based on the award’s intrinsic value on the  grant date and then re-measured them at each

reporting date until the date of settlement. Compensation expense was recognized on a straight-line

basis over the requisite service period for each separately vesting portion of the  award.  Compensation

expense for each period until settlement was based on the change in  intrinsic  value (or a portion of the

change in intrinsic value, depending on the percentage of the requisite service that has been rendered

at the reporting date). Changes in the intrinsic value of a liability that occur after the end of the

requisite service period were considered compensation expense in the period in which the changes

occur. On April 23, 2013, the Company distributed a notification letter to all equity award holders

under the 2007 Plan advising them that Purchase Transactions would  no longer occur, unless, at the

time of a Purchase Transaction, the option holder  has held the Common Stock issued upon exercise of

options for a period of greater than six months prior to selling such Common Stock to the Significant

Holder and that any such sale to the Significant Holder would be at the fair value of the Common

Stock on the date of such sale. Based on these new criteria for Purchase Transactions, the Company

remeasured options outstanding under the 2007 Plan as of April 23, 2013 to their intrinsic value and

reclassified such options from liabilities to stockholders’ deficit within the Company’s consolidated

F-14

F-15

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

2. Summary of Significant Accounting Policies (Continued)

2. Summary of Significant Accounting Policies (Continued)

balance sheets, which amounted to $14,482,000. The  remaining  expense for these options is being
recognized on a straight-line basis over the remaining requisite service period.

Share-based payment transactions with employees, including grants of employee stock options, are

recognized as compensation expense over the requisite service period based on their estimated fair
values.  ASC 718 also requires significant judgment and the use of estimates, particularly surrounding
Black-Scholes assumptions such as stock  price volatility over  the option term and expected option lives,
as well as expected option forfeiture rates, to estimate the grant date fair value of equity-based
compensation and requires the recognition of the fair value of stock compensation in the statement of
operations.

Clinical Trial Expense Accruals

As part of the process of preparing its financial statements, the Company is required  to  estimate
its expenses resulting from its obligations under contracts with vendors, clinical research organizations
and consultants and under clinical site agreements  in connection  with conducting clinical trials. The
financial terms of these contracts are  subject to negotiations, which vary from contract to contract and
may result in payment flows that do not match the periods over which materials or services are
provided under such contracts. The Company’s objective is  to  reflect the appropriate trial expenses in
its financial statements by matching those expenses with the period  in which services are performed and
efforts are expended. The Company accounts for these expenses according to the progress of the trial
as measured by patient progression and the timing of  various aspects of the trial.  The Company
determines accrual estimates through financial models taking into account discussion with applicable
personnel and outside service providers as to the  progress or state of consummation of trials, or the
services completed. During the course of a clinical trial, the Company adjusts its clinical expense
recognition if actual results differ from its estimates. The Company  makes estimates  of its accrued
expenses as of each balance sheet date based on the facts and circumstances known to it at that time.
The Company’s clinical trial accruals are dependent  upon the timely  and accurate reporting of  contract
research organizations and other third-party vendors.  Although the  Company does not expect its
estimates to be materially different from amounts actually incurred, its understanding of the status and
timing of services performed relative to the actual status  and timing of services performed  may vary
and may result in it reporting amounts  that are too high or too low for  any particular period. For the
years ended December 31, 2014, 2013 and 2012, there were  no material adjustments to the Company’s
prior period estimates of accrued expenses  for clinical trials.

Collaboration Arrangements

A collaboration arrangement is defined as a contractual arrangement  that has or may have
significant financial milestones associated with success-based development, which include certain
arrangements the Company has entered into  regarding the research and development, manufacture
and/or commercialization of products  and product candidates. These collaborations generally provide
for non-refundable, upfront license fees, research and development and commercial performance
milestone payments, cost sharing and royalty payments. The collaboration agreements with third-parties
are performed on a ‘‘best efforts’’ basis with no guarantee  of either technological or commercial
success. The Company evaluates whether an arrangement is a collaboration arrangement at its
inception based on the facts and circumstances specific to the arrangement. The Company reevaluates
whether an arrangement qualifies or  continues to qualify as a collaboration arrangement whenever

there is a change in the anticipated or actual ultimate commercial success  of the endeavor. See

Note 14, ‘‘License and Collaboration Agreements,’’ for  a discussion  of the Company’s current

collaborations with Baxter and SymBio.

Basic and Diluted Net Loss Per Share of Common Stock

Basic net loss per share of common stock is computed by dividing  net loss applicable to common

stockholders by the weighted-average number of shares of Common Stock outstanding during the

period, excluding the dilutive effects  of  Preferred Stock, warrants to purchase Preferred Stock and stock

options. Diluted net loss per share of common stock is computed by dividing the net  loss applicable to

common stockholders by the sum of the weighted-average number of shares of Common Stock

outstanding during the period plus the potential dilutive effects of Preferred Stock and warrants to

purchase Preferred Stock, and stock options outstanding during the period calculated in accordance

with the treasury stock method, but are excluded if their effect is anti-dilutive. Because the impact of

these items is anti-dilutive during periods of net loss, there was no difference between basic and diluted

net loss per share of Common Stock  for the years ended December 31,  2014, 2013  and 2012.

Recent Accounting Pronouncements

In July 2013, the Financial Accounting Standards Board (the ‘‘FASB’’) issued guidance clarifying

that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in

the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward,  a

similar tax loss, or a tax credit carryforward if such settlement is required or expected in the event the

uncertain tax benefit is disallowed. In situations where a net operating loss  carryforward, a similar tax

loss, or a tax credit carryforward is not available at the reporting date under the tax  law of the

applicable jurisdiction or the tax law of the jurisdiction does not require, and the entity does not intend

to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented  in the

financial statements as a liability and should not be netted with the deferred tax asset. The guidance

was effective for fiscal years, and interim periods  within those years, beginning after  December 15,

2013. The Company adopted these new provisions during the quarter beginning January 1, 2014. The

guidance did not have an impact on the Company’s consolidated financial position, results of

operations or cash flows.

In May 2014, the FASB issued guidance on revenue from contracts with customers that will

supersede most current revenue recognition guidance. The underlying principle is that an  entity  will

recognize revenue to depict the transfer of goods  or services to customers at an amount that the entity

expects to be entitled to in exchange for those goods  or services. The guidance is effective for the

interim and annual periods beginning on or  after December 15, 2016, and early adoption is not

permitted. The guidance permits the use  of  either a retrospective or cumulative effect transition

method. The Company has not yet selected a transition method and is currently evaluating the impact

of the amended guidance on the Company’s consolidated financial position, results of operations and

related disclosures.

In August 2014, the FASB issued guidance on determining when  and how to disclose going-

concern uncertainties in the financial statements. The new standard requires management to perform

interim and annual assessments of an entity’s ability to continue as a going concern within one year of

the date the financial statements are issued. An entity must  provide certain disclosures if conditions or

F-16

F-17

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

2. Summary of Significant Accounting Policies (Continued)

4. Fair Value Measurements (Continued)

events raise substantial doubt about the entity’s  ability  to  continue as  a  going concern. The guidance
applies to all entities and is effective for annual  periods ending after  December 15, 2016, and interim
periods thereafter, with early adoption permitted. The Company is evaluating  the potential impact of
the new guidance on its financial reporting process and its consolidated financial position, results of
operations and related disclosures.

3. Property and Equipment

Property and equipment and related accumulated  depreciation are as follows:

December 31,

2014

2013

Laboratory equipment . . . . . . . . . . . . . . . . . . . . . . . . . .
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer and office equipment . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . .

$ 1,037,000
92,000
433,000
1,063,000

$

866,000
92,000
433,000
1,011,000

Less accumulated depreciation . . . . . . . . . . . . . . . . . . . .

2,625,000
(2,205,000)

2,402,000
(1,776,000)

$

420,000

$

626,000

Depreciation and amortization expense was $434,000, $446,000 and $319,000 for the years ended

December 31, 2014, 2013 and 2012, respectively.

4. Fair Value Measurements

The Company applies various valuation approaches in  determining the fair value of its financial

assets and liabilities within a hierarchy that maximizes  the use of observable inputs and minimizes the
use of unobservable inputs by requiring that  observable  inputs be used when available. Observable
inputs are inputs that market participants would use in pricing the asset or liability based on market
data obtained from sources independent of the Company. Unobservable  inputs are inputs that reflect
the Company’s assumptions about the inputs that market participants would use in pricing the asset or
liability and are developed based on  the best information available under the circumstances. The fair
value hierarchy is broken down into  three levels based on the source of inputs as  follows:

Level 1—Valuations based on unadjusted quoted prices  in active markets for identical assets or
liabilities that the Company has the ability to access.

Level 2—Valuations based on quoted prices for similar  assets or liabilities in active markets,
quoted prices for identical or similar assets or liabilities in markets  that are not active and  models
for  which all significant inputs are observable, either directly or indirectly.

Level 3—Valuations based on inputs that are unobservable  and significant to the overall fair  value
measurement.

The availability of observable inputs can vary among the various types  of financial assets and

liabilities. To the extent that the valuation is based on models  or inputs that are less observable or

unobservable in the market, the determination of fair value  requires more judgment. In certain cases,

the inputs used to measure fair value may fall into  different levels of the fair value hierarchy. In such

cases, for financial statement disclosure purposes, the level in the fair value  hierarchy within which the

fair value measurement is classified is based on the lowest level input that is significant to the overall

fair value measurement.

The Company had no assets or liabilities classified as Level 1 or Level 2. The Series G Preferred

Stock warrants (see Note 9) are classified as Level 3. The fair values of these instruments are

determined using models based on market observable inputs and management judgment. There were

no material re-measurements of fair value during the years ended December 31, 2014  and 2013 with

respect to financial assets and liabilities, other than those assets and liabilities that are measured at fair

value on a recurring basis.

The Company has classified the Series G Preferred  Stock warrants as a liability and has

re-measured the liability to estimated fair value at December 31, 2014 and 2013, using the Black-

Scholes option pricing model using the following assumptions: contractual life according to the

remaining terms of the warrants, no dividend yield, weighted average risk-free  interest rate of 0.03%

and 0.34% at December 31, 2014 and 2013, respectively, and weighted average volatility of 102.26%

and 74.40% at December 31, 2014 and 2013, respectively.

The following fair value hierarchy table presents information about the Company’s financial assets

and liabilities measured at fair value on a recurring basis as of December 31, 2014  and 2013.

Fair  Value Measurement as of

Fair Value  Measurement as of

December 31, 2014

December  31, 2013

Level 1 Level 2 Level 3 Balance Level 1 Level  2

Level 3

Balance

Warrant liability . . . . . .

Total . . . . . . . . . . . . . .

$—

$—

$—

$—

$—

$—

$—

$—

$—

$—

$— $20,000 $20,000

$— $20,000 $20,000

The following table presents a reconciliation of the Company’s liabilities measured at fair value on

a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2014

and 2013:

Balance at December 31, 2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 62,000

Change in fair value upon re-measurement . . . . . . . . . . . . . . . . . . . . . . .

(42,000)

Balance at December 31, 2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Change in fair value upon re-measurement . . . . . . . . . . . . . . . . . . . . . . .

20,000

(20,000)

Balance at December 31, 2014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

—

Warrant

Liability

The fair values of cash equivalents, marketable securities, accounts payable and accrued liabilities

approximate their respective carrying values due to the short-term nature of these accounts.

There were no transfers between Level 1 and Level 2 in any of the periods reported.

F-18

F-19

—

(2,320,000)

$(63,682,000) $(62,543,000) $(29,912,000)
(3,953,000)

Basic and diluted net loss per share of common  stock:
Net loss attributable to Onconova Therapeutics, Inc . . . . .
Accretion to redemption value of preferred stock . . . . . . .

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

5. Net Loss Per Share of Common Stock

7. Income Taxes

The following table sets forth the computation of basic  and diluted  earnings  per share for the

years ended December 31, 2014, 2013 and 2012:

Year  ended  December 31,

2014

2013

2012

Net loss applicable to common stockholders . . . . . . . . . . .

$(63,682,000) $(64,863,000) $(33,865,000)

Weighted average shares of common stock outstanding . . .

21,653,536

10,594,227

2,206,888

Net loss per share of common stock—basic and diluted . . .

$

(2.94) $

(6.12) $

(15.35)

The following potentially dilutive securities outstanding at December 31, 2014, 2013 and  2012 have
been excluded from the computation of diluted weighted average shares  outstanding, as they would be
antidilutive:

December 31,

2014

2013

2012

Preferred Stock . . . . . . . . . . . . . . . . . . . . . . . .
Warrants . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock options . . . . . . . . . . . . . . . . . . . . . . . . . .

—
4,597
4,631,299

— 12,838,127
4,597
2,564,147

4,597
4,344,365

4,635,896

4,348,962

15,406,871

6. Balance Sheet Detail

Prepaid expenses and other current assets are as  follows:

Research and development . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,782,000
451,000
578,000
387,000

$2,242,000
1,051,000
645,000
449,000

December 31,

2014

2013

Accrued expenses and other current  liabilities  are as follows:

$3,198,000

$4,387,000

December 31,

2014

2013

Research and development . . . . . . . . . . . . . . . . . . . . . . . .
Employee compensation . . . . . . . . . . . . . . . . . . . . . . . . . .
Professional fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$4,482,000
854,000
418,000
18,000
5,000

$4,625,000
509,000
310,000
302,000
74,000

$5,777,000

$5,820,000

F-20

F-21

The Company accounts for income taxes  under FASB ASC 740 (‘‘ASC 740’’). Deferred income tax

assets and liabilities are determined based upon differences  between financial reporting and  tax bases

of assets and liabilities, which are measured using the enacted  tax rates and laws that will be in effect

when the differences are expected to reverse.

Income taxes have been based on the following income (loss) before income tax expense:

December 31,

2014

2013

2012

Domestic . . . . . . . . . . . . . . . . . . . . . . .

$(63,910,000) $(62,154,000) $(29,912,000)

Foreign . . . . . . . . . . . . . . . . . . . . . . . .

134,000

33,000

—

$(63,776,000) $(62,121,000) $(29,912,000)

The provision for income taxes consists of the following:

December 31,

2014

2013

2012

Current

Deferred

US Federal

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ — $140,000

$—

State and Local . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

— 285,000 —

Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19,000

10,000 —

Total Current

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$19,000

$435,000

$—

US Federal

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ — $

State and Local . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—

—

— $—

— —

— —

Total Deferred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ — $

— $—

Total Expense (Benefit) . . . . . . . . . . . . . . . . . . . . . . . . .

$19,000

$435,000

$—

As of December 31, 2014, the Company had federal net operating loss (‘‘NOL’’) carry forwards of

$160,266,000, state NOL carry forwards of $141,053,000 and research and  development tax credit carry

forwards of $56,612,000, which are available to reduce future taxable income. The federal NOL and tax

credit carry forwards will begin to expire at various dates starting in 2022. The  state NOL  carry

forwards will begin to expire at various dates starting in  2016. The NOL carry forwards are subject to

review and possible adjustment by the Internal Revenue Service and state tax authorities. NOL and tax

credit carry forwards may become subject to an annual limitation  in the event of  certain cumulative

changes in the ownership interest of significant shareholders over a three-year period in excess of 50%,

as defined under Sections 382 and 383 of the Internal  Revenue Code of 1986, as amended, as well as

similar state tax provisions. This could limit the amount of NOLs that the Company can  utilize annually

to offset future taxable income or tax liabilities. The amount of the annual limitation, if any, will be

determined based on the value of the Company immediately prior to the ownership change. Subsequent

ownership changes may further affect the  limitation in future years.

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

7. Income Taxes (Continued)

8. Convertible Promissory Notes

The Company’s reserves related to taxes are  based on a determination of whether and how much

of a tax benefit taken by the Company in its tax filings or positions is more likely than not to be
realized.  The Company recognized no material adjustment  for  unrecognized income tax benefits.
Through December 31, 2014, the Company had no unrecognized tax  benefits or related interest and
penalties accrued.

The principal components of the Company’s deferred tax  assets are  as follows:

December 31,

2014

2013

Deferred tax assets:

Net operating loss carryovers . . . . . . . . . . . . . . . . .
R&D tax credits . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-qualified stock options . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . .
Charitable contributions . . . . . . . . . . . . . . . . . . . .
Accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . .
Fixed assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 63,776,000
56,750,000
4,916,000
5,648,000
6,000
691,000
164,000

$ 47,364,000
35,223,000
3,988,000
5,938,000
6,000
586,000
199,000

Deferred tax assets . . . . . . . . . . . . . . . . . . . . . . . . . .
Less valuation allowance . . . . . . . . . . . . . . . . . . . . . .

131,951,000
(131,951,000)

93,304,000
(93,304,000)

Net deferred tax assets . . . . . . . . . . . . . . . . . . . . . . .

$

— $

—

ASC 740 requires a valuation allowance to reduce  the deferred tax assets reported if, based on the

weight of available evidence, it is more likely than not that some  portion or  all of the deferred tax
assets will not be realized. After consideration of all the evidence,  both positive and negative, the
Company has recorded a full valuation allowance against  its deferred tax assets at December 31, 2014
and 2013, respectively, because the Company’s  management has  determined that is it more likely than
not that these assets will not be fully realized. The Company experienced a net change in valuation
allowance of $38,647,000 and $38,007,000 for the years ended December  31, 2014 and 2013,
respectively.

A reconciliation of income tax (expense) benefit at the statutory federal income tax  rate and

income taxes as reflected in the financial statements is as follows:

December 31,

2014

2013

2012

Federal income tax expense at statutory rate . . . . . . . . . . .
Permanent items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State income tax, net of federal benefit . . . . . . . . . . . . . . .
Tax credits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provision to return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in valuation allowance . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34.0% 34.0% 34.0%
(8.3)
(8.9)
4.5
4.2
34.4
33.8
(3.8)
(2.4)
(61.2)
(60.7)
(0.2)
—

(25.1)
1.8
18.5
—
(29.1)
(0.1)

Effective income tax rate . . . . . . . . . . . . . . . . . . . . . . . . . .

(0.0)% (0.6)% 0.0%

In March 2012, the Company offered to its stockholders the opportunity to participate in a

$30,000,000 private placement of convertible promissory notes (the ‘‘Convertible Debt Offering’’). From

April through July 2012, the Company had aggregate closings of the  Convertible Debt Offering of

$26,444,000, including $620,000 from the principal that remained outstanding on a stockholder loan at

December 31, 2011.

In July 2012, the Company amended and restated its certificate of incorporation  and designated

Series I Preferred Stock. The Company and the holders of the convertible promissory notes amended

the Equity Scenario provision of the notes  to  permit the holders to convert the convertible promissory

notes into shares of Series I Preferred Stock at a conversion price of $11.00 per share.

In connection with the amendment of the convertible promissory notes, the notes were also

analyzed to determine the existence of a beneficial conversion feature. The Company concluded that an

$8,176,000 contingent beneficial conversion feature  existed related to the Equity Scenario as of July

2012. The fair value of the Series I Preferred Stock used  to calculate the value of the beneficial

conversion feature was determined by management  with the assistance of a third-party valuation firm.

On July 27, 2012, the holders of the convertible promissory notes exercised their right to convert

the outstanding principal and interest into  Series I Preferred Stock. Upon conversion, the holders

received 2,443,328 shares of Series I  Preferred Stock, and the Company recorded  interest expense of

$8,176,000, which was equal to the amount of the unamortized contingent beneficial conversion feature.

9. Preferred Stock and Stockholders’ Equity (Deficit)

From its inception to July 2013, the Company  raised  significant capital through the issuance of

redeemable convertible preferred stock, par value $0.01 per share,  in ten series  denominated as

Series A through Series J. At January 1, 2012 there were 11,227,169 shares of Preferred Stock issued

and outstanding.

In July 2012, the Company issued 2,433,328 shares of Series I Preferred Stock in exchange for  the

conversion of the convertible promissory notes and  accrued interest in the amount of $26,444,000 and

$323,000, respectively. The effective conversion price was $11.00 per share. Additionally, in July 2012,

the Company issued 3,030,303 shares of Series  J Preferred Stock at $16.50 per share  for gross proceeds

of $50,000,000. Issuance costs associated with  this offering were $2,204,000.

On July 30, 2013, immediately prior to the consummation of the IPO, all outstanding shares of

Preferred Stock automatically converted into shares of Common Stock at the applicable conversion

ratio then in effect. See Note 17.

Warrant Transactions

The Company issued 6,128 Series G Preferred Stock warrants in connection with a loan and

security agreement. Additionally, the Company  issued one Series G Preferred Stock warrant for  every

two shares of Series G Preferred Stock purchased in 2009 and 2010. The warrants were initially

recorded at their fair value calculated using the Black-Scholes model, with the following weighted

average assumptions: exercise price of $9.79, share price of $9.79, expected term of three years,

risk-free rate of 1.52% and volatility  of 85.46%. The  warrants are classified as liabilities because they

are exercisable for Preferred Stock, and the value of the warrants is adjusted  to  current fair value at

each reporting period end. For the years ended December 31, 2014, 2013 and 2012, the Company

F-22

F-23

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

9. Preferred Stock and Stockholders’ Equity (Deficit) (Continued)

10. Stock-Based Compensation (Continued)

recorded $20,000, $42,000 and $367,000, respectively, in the consolidated statements of operations
related to the change in the fair value of the outstanding warrants.

Immediately prior to the consummation of the IPO,  the 6,128 Series G Preferred Stock warrants

outstanding were automatically converted into 4,597 Common Stock warrants (after  giving effect  to  the
one-for-1.333 reverse stock split).

10. Stock-Based Compensation

In January 2008, the board of directors approved the 2007 Equity  Compensation Plan (the ‘‘2007

Plan’’), which amended, restated and renamed the  Company’s 1999 Stock Based Compensation Plan
(the ‘‘1999 Plan’’), which provided for the granting of incentive and nonqualified  stock options and
restricted stock to its employees, directors and consultants at the discretion  of the board of directors.

Further, in July 2013, the Company’s board of directors and  stockholders approved, effective
immediately prior  to the listing of the Common Stock on the  NASDAQ Global Select Market, the 2013
Equity Compensation Plan (the ‘‘2013 Plan’’), which amended, restated and renamed  the 2007 Plan .
Under the 2013 Plan, the Company may grant incentive stock options, non-statutory stock options,
stock appreciation rights, restricted stock, restricted stock units, deferred share awards, performance
awards and other equity-based awards to employees, directors and  consultants. The Company initially
reserved 6,107,831 shares of Common Stock for issuance, subject to adjustment as set forth in the 2013
Plan. At December 31, 2014, there were 1,012,310 shares  available for future issuance.

Stock-based compensation expense includes stock options  granted to employees and non-employees

and has been reported in the Company’s  statements of operations and comprehensive loss in  either
research and development expenses or general and  administrative expenses depending on the function
performed by the optionee. No net tax benefits related to the stock-based compensation costs  have
been recognized since the Company’s inception. The  Company recognized stock-based compensation
expense as follows for the years ended December 31, 2014,  2013 and 2012:

General and administrative . . . . . . . . . . . . .
. . . . . . . . . . . . .
Research and development

$2,082,000
2,986,000

$4,845,000
3,170,000

$ 7,199,000
6,645,000

$5,068,000

$8,015,000

$13,844,000

Year  ended December 31,

2014

2013

2012

A summary of stock option activity for the year ended  December 31, 2014 is as follows:

Shares

Available

for Grant

Number of

Shares

Options Outstanding

Weighted-

Average

Exercise

Price

Weighted

Average

Remaining

Contractual

Term (in years)

Aggregate

Intrinsic

Value

Balance, December 31, 2013 . . . . . . . . . . .

Authorized . . . . . . . . . . . . . . . . . . . . . .

676,236

858,699

—

4,344,365

$11.05

7.91

Granted . . . . . . . . . . . . . . . . . . . . . . . .

(1,015,300) 1,015,300

Exercised . . . . . . . . . . . . . . . . . . . . . . .

— (235,691)

Forfeitures . . . . . . . . . . . . . . . . . . . . . .

492,675

(492,675)

4.51

4.07

10.40

Balance, December 31, 2014 . . . . . . . . . . .

1,012,310

4,631,299

$10.04

7.89

$42,923

Vested or expected to vest at

December 31, 2014 . . . . . . . . . . . . . . . .

Exercisable at December 31, 2014 . . . . . . .

4,548,832

$10.04

2,639,334

$10.44

7.89

6.94

$42,923

$42,923

The intrinsic value of options exercised during the years ended December  31, 2014, 2013, and 2012

was $1,842,000, $1,076,000, and $4,510,000, respectively. The aggregate intrinsic value is calculated  as

the difference between the exercise price of the underlying awards and the quoted price of the

Company’s common stock for those awards that have an exercise price currently below the closing

Information with respect to stock options  outstanding and exercisable at December 31, 2014 is as

price.

follows:

Exercise Price

$1.33 - $5.58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$5.76 - $6.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$6.13 - $7.53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$13.28 - $13.48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1,673,334

$14.68 - $15.12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$21.79 - $28.81 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shares

Exercisable

928,933

577,891

626,066

759,888

65,187

115,381

577,891

517,255

807,473

580,172

41,162

4,631,299

2,639,334

Options granted after April 23, 2013

The Company accounts for all stock-based payments made after April 23, 2013 to employees and

directors using an option pricing model for estimating fair value. Accordingly, stock-based

compensation expense is measured based on the estimated  fair value of the  awards on the date of

grant, net of forfeitures. Compensation expense is recognized for the portion that is ultimately  expected

to vest over the period during which the recipient renders the required services to the Company using

the straight-line single option method. In accordance with  authoritative guidance, the fair  value of

F-24

F-25

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

10. Stock-Based Compensation (Continued)

10. Stock-Based Compensation (Continued)

non-employee stock based awards is re-measured as the awards  vest,  and the resulting increase in fair
value, if any, is recognized as expense in the period  the related services are rendered.

(cid:129) Expected annual dividend yield: The Company  has never paid, and does  not  expect to pay

dividends in the foreseeable future. Accordingly, the Company  assumed an expected dividend

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock
options at the grant date. The Black-Scholes model requires the  Company to make certain estimates
and assumptions, including estimating the fair value of the Company’s common stock, assumptions
related to the expected price volatility of the Company’s  stock,  the period during which the options will
be outstanding, the rate of return on risk-free investments and  the  expected dividend yield for the
Company’s stock.

As of December 31, 2014, there was  $10,450,000 of unrecognized compensation expense related to
the unvested stock options issued from April 24,  2013 through December 31, 2014, which  is expected to
be recognized over a weighted-average  period of approximately 3.31 years.

The weighted-average assumptions underlying the  Black-Scholes calculation of grant date fair value

include the following:

Year  Ended
December  31, 2014

Period from
April 24, 2013 to
December 31,  2013

Risk-free interest rate . . . . . . . . . . . . . . . . . . . .
Expected volatility . . . . . . . . . . . . . . . . . . . . . . .
Expected term . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected dividend yield . . . . . . . . . . . . . . . . . . .
Weighted-average grant date fair value . . . . . . . .

1.84%
78.6%
6.15 years
0%
$3.10

1.73%
77.0%
5.87 years
0%
$9.72

The weighted-average valuation assumptions were determined as follows:

(cid:129) Risk-free interest rate: The Company based the risk-free interest rate on the interest rate

payable on U.S. Treasury securities in effect at  the time of grant for a period that is
commensurate with the assumed expected option term.

(cid:129) Expected term of options: Due to its lack of sufficient historical data, the Company estimates
the expected life of its employee stock options using the  ‘‘simplified’’ method, as prescribed in
Staff Accounting Bulletin (SAB) No. 107, whereby the expected life equals the arithmetic
average of the vesting term and the original contractual term of the option.

(cid:129) Expected stock price volatility: Due  to  the Company’s limited operating history and a lack of
company specific historical and implied volatility  data,  the Company has based its estimate  of
expected volatility on the historical volatility of a group of similar companies that are publicly
traded. When selecting these public companies on which it has based its expected stock price
volatility, the Company selected companies with comparable  characteristics  to  it, including
enterprise value, risk profiles, position within  the industry, and with historical share price
information sufficient to meet the expected life of the stock-based awards. The historical
volatility data was computed using the daily closing prices for the selected companies’ shares
during the equivalent period of the calculated expected term  of the stock-based awards. Due to
its lack of sufficient historical data, the  Company will continue to apply this process  until a
sufficient amount of historical information regarding the volatility of its own  stock price becomes
available.

yield of 0.0%.

(cid:129) Estimated forfeiture rate: The Company’s estimated annual forfeiture rate on stock option

grants was 4.14% in 2014 and 1.69% in 2013,  based on the historical forfeiture experience.

Options granted through April 23, 2013

At certain times throughout the Company’s history, the chairman of the Company’s board of

directors, who is also a significant stockholder of the Company  (the ‘‘Significant Holder’’), has afforded

option holders the opportunity for liquidity in transactions in  which options were exercised and the

shares of Common Stock issued in connection therewith were simultaneously purchased by the

Significant Holder (each, a ‘‘Purchase Transaction’’). Because the Company had  established a pattern of

providing cash settlement alternatives for option holders, the Company has accounted for its stock-

based compensation awards as liability awards, the  fair value of which is then re-measured  at each

balance sheet date.

On April 23, 2013, the Company distributed a notification letter to all  equity award holders under

the Company’s 2007 Equity Compensation Plan (the ‘‘2007 Plan’’)  advising them that Purchase

Transactions would no longer occur, unless, at the time of a Purchase Transaction, the option holder

has held the Common Stock issued upon exercise of options for a period of greater than six months

prior to selling such Common Stock  to  the Significant Holder and that any  such sale to the Significant

Holder would be at the fair value of the  Common Stock on the date of such sale. Based on these new

criteria for Purchase Transactions, the Company remeasured options  outstanding under the 2007 Plan

as of April 23, 2013 to their intrinsic value and reclassified such options from liabilities to stockholders’

deficit within the Company’s consolidated balance sheets, which amounted to $14,482,000. As of

December 31, 2014, there was $729,000  of  unrecognized compensation expense related to these

unvested awards, which is expected to  be  recognized over a weighted-average period of approximately

1.78 years.

11. Employee Benefit Plan

In October 2007, the Company established a 401(k) Retirement Savings Plan. Employees are

eligible to participate in the plan as soon as they  join the Company if they are at least 21 years of age

and work a minimum of 1,000 hours  per year. The Company matches $0.60 for every dollar of the first

6% of payroll that employees invest, up to the legal limit. Employer contributions vest over four years

at the rate of 25% per year. For the years ended December 31,  2014, 2013 and 2012,  the Company

contributed $276,000, $289,000 and $159,000, respectively.

12. Commitments and Contingencies

Operating leases

In January 2007, the Company entered into a lease for 8,100 square feet  of office and lab space in

Newtown, Pennsylvania, and in October 2009, the Company and the landlord amended the  lease to add

three additional one-year options to extend the lease term. In November 2013 the Company renewed

the lease for the period April 1, 2014  to  March 31, 2015, for rent of $11,000 per month. In December

F-26

F-27

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

12. Commitments and Contingencies (Continued)

13. Research Agreements (Continued)

2014 the Company renewed the lease for the period April 1, 2015 to March  31, 2016, for rent of
$11,500 per month. In September 2012, the Company sub-leased an additional 1,356 square feet of
office space. The lease has been renewed through August 31, 2015 for rent of $1,600 per month.

The Company rents 4,807 square feet of office space  in Pennington,  New Jersey under two leases

for $8,100 per month. Both leases are cancellable with three months’ written notice and have been
cancelled effective May 2015. The lease required the  Company to provide the landlord a $125,000
letter of credit, the collateral for which is  recorded  as restricted cash on the consolidated balance
sheets. The letter of credit expired in March 2015 and the restriction on cash was discontinued.

The Company rents office space in Munich, Germany under one year leases that run from
January 1 to December 31. For the period January 1,  2014  to  December 31, 2014 the rent was A4,300
per month. For the period January 1,  2015 to December 31, 2015 the rent is A4,500 per month.

Future minimum lease payments under these non-cancellable leases having terms in excess of one

year as of December 31, 2014 are as follows:

2015 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2016 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$136,000
35,000

Total minimum lease payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$171,000

Rent expense was $389,000, $309,000 and $233,000 for the years ended December 31, 2014, 2013

December 31,
2014

and 2012, respectively.

Employment agreements

The Company has entered into employment agreements with certain of its executives. The

agreements provide for, among other  things, salary, bonus and severance payments.

13. Research Agreements

The Company has entered into various  licensing and right-to-sublicense  agreements with

educational institutions for the exclusive use  of patents and patent applications, as well  as any patents
that may develop from research being conducted by such educational institutions in the field of
anticancer therapy, genes and proteins. Results from this research have been licensed to the Company
pursuant to these agreements. Under one of these agreements with Temple University (‘‘Temple’’), the
Company is required to make annual maintenance payments to Temple and royalty payments based
upon a percentage of sales generated from any  products covered by the licensed  patents,  with minimum
specified royalty payments. As no sales had been generated through December 31, 2014 under the
licensed patents, the Company has not incurred any royalty  expenses related to this agreement. In
addition, the Company is required to pay  Temple 25% of any  sublicensing fees received by the
Company. In 2011, the Company recorded $1,875,000 of expense related to the Temple agreement in
connection with the collaboration agreement  the Company  executed with SymBio. In 2012, the
company recorded $12,500,000 of expense related to the Temple agreement in connection with the
collaboration agreement the Company executed with Baxter. These expenses were recorded in the
consolidated statement of operations as research and development expenses.

In May 2010, the Company signed a funding agreement with the Leukemia and Lymphoma Society

(‘‘LLS’’) to fund the development of rigosertib. Under this agreement, the Company was entitled to

receive milestone payments of up to $10,000,000 through 2013 in connection with clinical trials to be

conducted. The aggregate milestone payment amount was subsequently reduced  to  $8,000,000 pursuant

to an amendment signed in January 2013, after which LLS was not obligated to fund any further

amounts. During the year ended December 31, 2012, in  connection  with the execution of the Baxter

agreement, the Company paid $1,000,000 to LLS and recorded this amount  in research and

development expenses. This payment reduced the  maximum milestone and  royalty payment obligation

under this agreement to $23,000,000 at December 31, 2014 and 2013. No further payments are due to

LLS if rigosertib does not obtain regulatory approval. If rigosertib is approved by the regulatory

authorities, the Company must proceed with commercialization of the licensed product or repay the

amount funded. LLS is entitled to receive regulatory and commercial milestone payments and  royalties

from the Company based on the Company’s net sales of the licensed product. As a result of the

potential obligation to repay the funds under this  arrangement, the $8,000,000 of milestone payments

received, have been recorded as deferred revenue at December 31, 2014  and 2013.

14. License and Collaboration Agreements

Baxter Agreement

In September 2012, the Company entered into a development and license agreement with Baxter

granting Baxter an exclusive, royalty-bearing license for the research, development, commercialization

and manufacture (in specified instances) of rigosertib in all therapeutic indications in Europe (the

‘‘Baxter Territory’’) In accordance with this  agreement, Baxter made a $50,000,000 upfront payment  to

the Company. In July 2012, Baxter purchased $50,000,000 of the Company’s Series J Preferred Stock,

which automatically converted to shares of Common  Stock immediately prior to the consummation of

the IPO. Baxter also invested $4,950,000 in the Company’s IPO.

Under the terms of the agreement, the Company was initially required to perform research and

development to advance three initial rigosertib indications, rigosertib intravenous (‘‘IV’’) in higher-risk

myelodysplastic syndrome (‘‘MDS’’) patients, rigosertib IV in pancreatic cancer patients and rigosertib

oral in lower-risk MDS patients, through Phase 3, Phase 3 and Phase 2 clinical trials, respectively.

In December 2013, a pre-planned interim futility and safety analysis  of the pancreatic cancer trial

was performed and the trial was discontinued. As a result, at this time the Company is not pursuing a

pancreatic cancer indication.

In February 2014, the Company announced top-line analysis of a Phase 3 trial of rigosertib IV  in

higher-risk MDS patients. Although the results of this study showed numerical improvement in median

overall survival in the rigosertib treated patients, the observed improvement in survival of  2.3 months

was not sufficient to establish the required level of statistical significance and, therefore did not achieve

the primary endpoint of the trial. An additional Phase 3 clinical trial for rigosertib IV in higher-risk

MDS patients is required to obtain marketing approval in the Baxter Territory. The Company could

elect to have Baxter fund fifty percent of the costs of the next phase 3 trial of rigosertib IV in

higher-risk MDS, up to $15.0 million. If the Company chooses to do so then the approval milestone for

higher-risk MDS will be reduced by $15.0 million.

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Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

14. License and Collaboration Agreements (Continued)

14. License and Collaboration Agreements (Continued)

On January 27, 2015, Onconova was notified  that Baxter has elected not to pursue additional
clinical trials, or the submission of a drug approval application, for rigosertib  oral in lower-risk MDS
patients. Onconova would have received a milestone payment under its agreement with Baxter if the
parties had mutually agreed to progress the development of  oral rigosertib  in lower-risk MDS  patients.
The decision by Baxter does not alter the collaboration agreement between the  parties. Onconova  has
the right to continue the development  of  oral rigosertib in this indication on its own, and Baxter has
the right to commercialize oral rigosertib for lower-risk  MDS  in its territory, subject to its ongoing
compliance with the agreement, including payment of applicable milestones.

The Company and Baxter may work together for  potential future rigosertib  indications, beyond the

initial indications noted above. Generally, if Baxter chooses to participate in  the development of
additional indications, Baxter will be responsible  for a percentage of all  research and development costs
and expenses and the Company could earn additional milestone payments. Baxter has full responsibility
for all commercialization activities for the  product in the Baxter Territory, at Baxter’s sole cost and
expense.

The development and license agreement contemplates that  the  Company and Baxter  may negotiate

a supply agreement under terms satisfactory to both parties whereby the Company will supply Baxter
with Baxter’s required levels of product to support commercialization efforts in the Baxter Territory.
Baxter also has the right to engage third parties for the manufacture and supply of its  requirements for
the licensed product.

The Company is eligible to receive pre-commercial milestone payments if specified development
and regulatory milestones are achieved. The potential pre-commercial development milestone payments
to the Company include $25,000,000 for each drug approval application  filed  for indications specified  in
the agreement, and up to $100,000,000 for marketing approval for each of the specified MDS
indications.

In addition to these pre-commercial milestones, the Company is  eligible to receive up to an
aggregate of $250,000,000 in milestone payments based on Baxter’s  achievement of pre-specified
threshold levels of annual net sales of rigosertib. The Company will also be entitled to receive royalties
at percentage rates ranging from the  low-teens to the low-twenties on net sales of rigosertib by Baxter
in the Baxter Territory.

The agreement with Baxter will remain in effect until the expiration of all applicable royalty  terms

and satisfaction of all payment obligations  in each licensed  country,  unless terminated earlier in
accordance with the terms of the agreement. Either party may terminate due to the uncured  material
breach or bankruptcy of the other party, force majeure, or in the event of a specified commercial
failure. The Company may terminate the agreement in the event that  Baxter  brings a challenge against
it in relation to the licensed patents. Baxter may terminate the agreement without cause upon 180 days’
prior written notice.

The Company determined that the deliverables under the Baxter agreement include the exclusive,

royalty-bearing, sublicensable license to rigosertib and  the research and development services to be
performed by the Company. The Company concluded that the license had standalone value to Baxter
and was separable from the research  and development services because the license is sublicensable,
there are no restrictions as to Baxter’s use of the license and  Baxter has significant research capabilities
in this field.

In determining the separate units of accounting,  the Company considered applicable accounting

guidance and noted that in an arrangement with multiple  deliverables, the delivered item or items  shall

be considered a separate unit of accounting if the delivered item or items have value to the customer

on a stand-alone basis. The item or items have value  on a stand-alone basis if they are sold separately

by any vendor or the customer could resell the delivered item(s)  on a stand-alone basis. In the context

of a customer’s ability to resell the delivered item(s), this criterion does not require the existence of an

observable market for the deliverable(s).

The Baxter agreement allows Baxter to sublicense rigosertib and its ability to sublicense is not

contingent on the approval or right of first refusal by the Company. The Company determined that

Baxter’s ability to sublicense the intellectual property to others demonstrates  that the license has stand-

alone value. In addition, at the time of entering into the Baxter agreement in September 2012, the

rigosertib program was in a Phase 3 clinical  trial for higher-risk MDS, a Phase 3 clinical trial for

pancreatic cancer and a Phase 2 trial for lower-risk MDS. The protocols for the clinical trials had been

written and provided to Baxter and a Special Protocol Assessment had already been granted to the

Company by the U.S. Food and Drug Administration (the ‘‘FDA’’) for higher-risk MDS.  These later

stage clinical trials, where protocols have  been prepared and trials are in process, can be completed

more easily by entities other than the Company, as compared to earlier stage  clinical trials. The

remaining services to be performed by the Company are not proprietary and could be performed by

other qualified parties. For example,  the Company relies on clinical research organizations (‘‘CROs’’)

to complete the clinical trials, and Baxter could engage the same or similar CROs to complete the

trials on its behalf. Although Baxter is not performing development activities related to rigosertib,

Baxter possesses the internal expertise (or a vendor could be hired)  to  complete the efforts under the

rigosertib programs without further assistance from the Company.

Baxter has the rights and full access to past and future intellectual information in order to obtain

regulatory approval of rigosertib in Europe. In connection with the Baxter agreement, the Company

licensed to Baxter all information and all patents controlled by the Company necessary for the

development, manufacture, use and sale of rigosertib and all present and future formulations and

dosages in all present and future therapeutic indications in  the licensed territory.

Accordingly, given Baxter’s ability to sublicense under the agreement and its ability internally or

with outside help to conduct the ongoing development efforts, the Company  concluded that the license

has stand-alone value. In order to determine if the license can be treated as a  separate unit of

accounting, the Company also considered whether there is a general right of return associated with the

license. The $50,000,000 upfront payment received by the Company is  non-refundable; therefore, there

is no right of return for the license. As a result, the Company concluded that the license is  a separate

unit of accounting.

The Company was not able to establish vendor-specific objective evidence of selling price or third-

party evidence for either the license or the  research and development services and instead allocated the

arrangement consideration between the license and research and development services based on their

relative selling prices using best estimate of selling price (‘‘BESP’’). Management developed the BESP

of the license using a discounted cash flow model, taking into consideration assumptions including  the

development and commercialization timeline, discount rate and probability of success. Management

utilized a third party valuation specialist to assist with the determination of BESP of the license.

Management estimated the selling price of the research and development services using third party

F-30

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Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

14. License and Collaboration Agreements (Continued)

14. License and Collaboration Agreements (Continued)

costs and a discounted cash flow model. The  estimated selling prices utilized assumptions  including
internal estimates of research and development personnel needed to perform the research and
development services; and estimates of expected cash  outflows to third parties for services and  supplies
over the expected period that the services will be performed.

The key assumptions in these models included the  following  market conditions and entity-specific

factors: (a) the specific rights provided  under the license, (b) the stage  of development of rigosertib
and estimated remaining development  and commercialization timelines, (c) the probability of
successfully developing and commercializing rigosertib, (d) the market  size including the associated
sales figures which generate royalty revenue, (e) cost  of  goods sold, which  was assumed to be a
specified percentage of revenues based on estimated  cost of goods sold of a typical oncology product,
(f) sales and marketing costs, which were based on the costs required to field an oncology sales force
and marketing group, including external costs required to promote an oncology product, (g) the
expected product life of rigosertib assuming commercialization and (h) the competitive environment.
The Company utilized a discount rate of 16%, representing the  cost of capital derived from returns on
equity for comparable companies.

Based on management’s analyses, it was determined that the BESP of the license was $120,000,000

and the BESP of the research and development services was $20,600,000. As noted above, the
Company received an up-front payment of $50,000,000  under the Baxter agreement, which represents
the allocable agreement consideration. Based on the  respective BESPs, this payment was allocated
$42,400,000 to the license and $7,600,000 to the research  and development services. Since the delivery
of the license occurred upon the execution of the Baxter  agreement and  there was no general right of
return, $42,400,000 of the $50,000,000 upfront payment was recognized  upon the execution of the
Baxter agreement. The portion allocated to research and development services was recognized over the
period of performance on a proportional performance  basis through  March 31, 2014. Management
estimated the period of performance to be the period necessary for completion of the non-contingent
obligations to perform research and development services required to advance the three formulations of
rigosertib described above. As of March 31,  2014, all of the deferred revenue related to such research
and development services was recognized. The Company recognized research and development revenue
under the Baxter agreement of $333,000, $4,176,000 and  $3,100,000,  for the years ended December 31,
2014, 2013 and 2012, respectively.

The Company and Baxter have agreed to establish a joint committee to facilitate the governance

and oversight of the parties’ activities  under the agreements. Management considered whether
participation on the joint committee may  be  a deliverable and determined that it was not a  deliverable.
Had management considered participation on  the joint committee  as a deliverable, it would  not  have
had a material impact on the accounting for the arrangement based on the analysis of the estimated
selling price of such participation.

As noted above, in July 2012, Baxter purchased Series J Preferred Stock. Because the Series J
Preferred Stock was acquired within  several months of the Baxter development and license agreement,
management considered whether the Series J  Preferred Stock  was issued at fair value and  if not,
whether the consideration received for the  Series J Preferred Stock ($50,000,000) or for the
collaboration and license agreement ($50,000,000) should be allocated in the  financial statements  in a
manner differently than the prices stated in the agreements. Management, with the assistance of an
outside valuation specialist, determined  that the price paid by Baxter for the Series J Preferred Stock

approximated its fair value, and therefore  the consideration received under the agreements was

allocated in accordance with terms of the individual agreements.

SymBio Agreement

In July 2011, the Company entered into a license agreement with SymBio, as subsequently

amended, granting SymBio an exclusive, royalty-bearing license  for the development and

commercialization of rigosertib in Japan and Korea. Under the SymBio license agreement, SymBio  is

obligated to use commercially reasonable efforts  to  develop and obtain market approval for rigosertib

inside the licensed territory and the Company has similar  obligations outside of the  licensed territory.

The Company has also entered into an agreement with SymBio providing  for it to supply SymBio with

development-stage product. Under the SymBio license agreement, the Company also agreed to supply

commercial product to SymBio under specified terms that will  be  included in  a commercial supply

agreement to be negotiated prior to the first commercial sale of rigosertib. The supply of  development-

stage product and the supply of commercial product will be at the Company’s cost plus a  defined profit

margin. Sales of development-stage product have been de minimis. The  Company has additionally

granted SymBio a right of first negotiation  to  license or obtain the rights to develop and commercialize

compounds having a chemical structure similar to rigosertib in the licensed territory.

Under the terms of the SymBio license agreement, the Company received an upfront payment of

$7,500,000. The Company is eligible to receive milestone payments of up to an  aggregate of $22,000,000

from SymBio upon the achievement of specified development and regulatory milestones for specified

indications. Of the regulatory milestones, $5,000,000 is due upon receipt of marketing approval in the

United States for rigosertib IV in higher-risk MDS patients, $3,000,000 is due upon  receipt of

marketing approval in Japan for rigosertib IV in higher-risk MDS patients, $5,000,000 is due upon

receipt of marketing approval in the United States for rigosertib oral in lower-risk MDS patients, and

$5,000,000 is due upon receipt of marketing approval  in Japan for  rigosertib oral in lower-risk MDS

patients. Furthermore, upon receipt of marketing approval in the United  States and Japan for  an

additional specified indication of rigosertib, which the Company is currently not pursuing, an aggregate

of $4,000,000 would be due. In addition  to  these  pre-commercial milestones, the Company is eligible to

receive tiered milestone payments based upon annual net sales of rigosertib by SymBio of up to an

aggregate of $30,000,000.

SymBio.

Further, under the terms of the SymBio license agreement, SymBio will make royalty payments to

the Company at percentage rates ranging from the mid-teens to 20% based on net sales of rigosertib by

Royalties will be payable under the SymBio agreement on a country-by-country  basis in the

licensed territory, until the later of the expiration of marketing exclusivity in those countries, a specified

period of time after first commercial sale of rigosertib in such country, or the  expiration of all valid

claims of the licensed patents covering  rigosertib or the manufacture or use of rigosertib in such

country. If no valid claim exists covering the composition of matter of rigosertib  or the use of or

treatment with rigosertib in a particular country before the expiration of the royalty term, and specified

competing products achieve a specified market share percentage in  such country, SymBio’s obligation to

pay the Company royalties will continue at  a reduced royalty rate until the end of the royalty term. In

addition, the applicable royalties payable to the Company may be reduced  if SymBio is required  to  pay

royalties to third-parties for licenses to intellectual property rights necessary to develop, use,

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Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

14. License and Collaboration Agreements (Continued)

15. Preclinical Collaboration (Continued)

manufacture or commercialize rigosertib  in the licensed  territory. The license agreement with  SymBio
will remain in effect until the expiration of  the royalty term.  However, the SymBio license agreement
may be terminated earlier due to the uncured material breach or  bankruptcy  of a party, or force
majeure. If SymBio terminates the license agreement in these circumstances, its licenses to rigosertib
will survive, subject to SymBio’s milestone and royalty obligations, which SymBio  may elect to defer
and offset against any damages that may be determined to  be  due from the Company. In addition, the
Company may terminate the license agreement in the event that SymBio brings a challenge against it in
relation to the licensed patents, and SymBio may terminate the license agreement without cause by
providing the Company with written notice within a specified period  of time in advance of termination.

The Company determined that the deliverables under the SymBio agreement include  the exclusive,

royalty-bearing, sublicensable license to rigosertib, the research and development services to be
provided by the Company and its obligation to serve on a joint committee. The Company concluded
that the license did not have standalone value to SymBio and was not separable from the research  and
development services, because of the uncertainty  of SymBio’s ability to develop rigosertib in the
SymBio territory on its own and the uncertainty of SymBio’s ability to sublicense rigosertib and recover
a substantial portion of the original upfront payment  of  $7,500,000 paid by SymBio to the Company.

The supply of rigosertib for SymBio’s commercial  requirements is  contingent upon the receipt of

regulatory approvals to commercialize rigosertib in  Japan and Korea.  Because the Company’s
commercial supply obligation was contingent upon the receipt of future regulatory approvals, and there
were no binding commitments or firm purchase orders pending for commercial supply at or near the
execution of the agreement, the commercial supply obligation  is deemed to be contingent and is not
valued as a deliverable under the SymBio agreement. If SymBio orders the supplies from the Company,
the Company expects the pricing for this supply to equal  its third-party manufacturing cost plus  a
pre-negotiated percentage, which will not result in a significant incremental discount to market rates.

Due to the lack of standalone value for the license, research and development services, and joint
committee obligation, the upfront payment  is being recognized ratably using the straight line method
through December 2027, the expected term of the agreement. The Company  recognized revenues
under this agreement of $455,000, $455,000 and $455,000, for the years ended December 31, 2014, 2013
and 2012, respectively. In addition, the Company recognized revenues related to the supply agreement
with Symbio in the amounts of $11,000, $122,000 and $48,000 for the years ended December 31, 2014,
2013 and 2012, respectively.

15. Preclinical Collaboration

In December 2012, the Company agreed  to  form GBO, an entity  owned by the Company and
GVK BIO. The purpose of GBO is to collaborate  on and develop two programs through filing of an
investigational new drug application  (‘‘IND’’) and/or conducting proof of concept studies using the
Company’s technology platform.

During 2013, GVK BIO made an initial capital contribution of $500,000 in exchange for a 10%

interest in GBO, and the Company made an initial capital contribution of a  sub-license to all the
intellectual property controlled by the Company related to the two  specified programs in exchange for
a 90% interest. Under the terms of the agreement, GVK  BIO  may make  additional capital
contributions. The GVK BIO percentage  interest in GBO may change from the  initial 10% to up to
50%, depending on the amount of its total capital contributions.  During November 2014, GVK BIO
made an additional capital contribution of $500,000  which increased its interest in GBO to 17.5%. The
Company evaluates its variable interests in  GBO on  a quarterly basis and has determined that  it is the
primary beneficiary.

For thirty days following the 15-month anniversary of the commencement of either  of the two

programs, the Company will have an option to (i) cancel the license and (ii) purchase all rights in and

to that program. There are three of these buy-back scenarios depending  on the stage of development of

the underlying assets. In addition, upon the occurrence of certain events, namely termination of our

participation in the programs either with or without a change in control, GVK BIO will be entitled to

purchase or obtain our interest in GBO. GVK BIO will have operational control of GBO and the

Company will have strategic and scientific control.

16. Related-Party Transactions

The Company has entered into a research agreement, as subsequently amended, with the Mount

Sinai School of Medicine (‘‘Mount Sinai’’), with  which a  member of its board of directors  and a

significant stockholder is affiliated. Mount Sinai is undertaking research on behalf of the Company on

the terms set forth in the agreements. Mount Sinai, in connection  with the Company, will prepare

applications for patents generated from the research. Results from all projects will belong exclusively to

Mount Sinai, but the Company will have an exclusive option to license any inventions. Payments to

Mount Sinai under this research agreement  for the  years  ended December 31, 2014, 2013 and 2012

were $1,215,000, $1,235,000 and $1,230,000, respectively. At December 31, 2014 and 2013, the Company

had no outstanding amounts payable to Mount Sinai.

The Company outsources the synthesis of some of its chemical compounds to vendors  in the

United States and in foreign countries. During 2013, a supplier, of which a member of the Company’s

board of directors and a significant stockholder was an owner,  produced one of these compounds under

contract. The Company’s aggregate payments for these services for the years ended December 31, 2014,

2013 and 2012 were $0, $107,000 and $157,000, respectively. At December 31, 2014 and 2013, the

Company had no outstanding amounts payable to this supplier.

The Company purchases chemical compounds and sources development  services from corporations

owned by a former member of its board of directors. The Company’s aggregate payments to these

suppliers for the years ended December 31, 2014, 2013 and 2012 were $446,000, $1,354,000 and

$316,000, respectively. At December 31, 2014 and 2013,  the Company owed this supplier $8,000 and

$157,000, respectively, which is included in accounts payable  on the consolidated balance sheets. The

Company also rents office space in Pennington, New Jersey from a corporation related to these

suppliers and affiliated with the former member of its board of directors.

The Company has entered into a consulting agreement with a member of its board of directors,

who is also a significant stockholder. The  board member  provides consulting services  to  the Company

on the terms set forth in the agreement. Payments to this board member for the years ended

December 31, 2014, 2013 and 2012 were $194,000, $182,000 and $165,000, respectively. At

December 31, 2014 and December 31, 2013, the Company had no outstanding amounts payable  under

this agreement.

17. Initial Public Offering

On July 24, 2013, the Company’s Registration Statement on Form S-1 was declared effective by the

SEC, and on July 25, 2013, the Company’s Common Stock began trading on the NASDAQ Global

Select Market under the symbol ONTX.

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Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

17. Initial Public Offering (Continued)

20. Quarterly Data (unaudited)

First

Quarter

Second

Quarter

Third

Quarter

Fourth

Quarter

2014

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . .

$

447,000

$

125,000

$

114,000

$

114,000

Operating expenses:

General and administrative . . . . . . . . . .

Research and development . . . . . . . . . . .

4,932,000

14,248,000

3,985,000

12,904,000

3,116,000

11,886,000

3,086,000

10,387,000

Total operating expenses . . . . . . . . . . .

19,180,000

16,889,000

15,002,000

13,473,000

Loss from operations . . . . . . . . . . . . . . . .

(18,733,000)

(16,764,000)

(14,888,000)

(13,359,000)

Change in fair value of warrant liability . . .

Other income, net . . . . . . . . . . . . . . . . . . .

16,000

1,000

3,000

(19,000)

1,000

(20,000)

—

(14,000)

Net loss before income taxes . . . . . . . . . . .

(18,716,000)

(16,780,000)

(14,907,000)

(13,373,000)

Income taxes . . . . . . . . . . . . . . . . . . . . . .

—

—

—

19,000

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . .

(18,716,000)

(16,780,000)

(14,907,000)

(13,392,000)

Net loss attributable to non-controlling

interest . . . . . . . . . . . . . . . . . . . . . . . . .

37,000

27,000

29,000

20,000

Net loss applicable to common stockholders

$(18,679,000) $(16,753,000) $(14,878,000) $(13,372,000)

and diluted* . . . . . . . . . . . . . . . . . . . . .

$

(0.87) $

(0.77) $

(0.69) $

(0.62)

Net loss per share of common stock, basic

Basic and diluted weighted average shares

outstanding . . . . . . . . . . . . . . . . . . . . . .

21,568,302

21,658,625

21,691,017

21,694,403

On July 30, 2013, immediately prior to the consummation  of  the IPO, all outstanding shares of
Preferred Stock automatically converted into shares of Common Stock at the  applicable conversion
ratio then in effect. Commencing with the conversion, the Company had  no shares of Preferred Stock
outstanding.

On July 30, 2013, the Company completed the IPO. The Company received net proceeds of
$79,811,000 from the IPO, net of underwriting discounts and commissions and other offering  expenses.

In preparation for the IPO, the Company’s board of directors  and stockholders approved a
one-for-1.333 reverse stock split of the Company’s Common Stock.  The reverse stock split became
effective on July 17, 2013. All Common Stock share  and per share amounts in the consolidated
financial statements and notes thereto have been retroactively adjusted for  all periods presented to give
effect to this reverse stock split, including reclassifying an amount equal to the reduction in par value
of common stock to additional paid-in capital. The reverse stock split did  not  result in a retroactive
adjustment of share amounts for the Preferred Stock. In addition, in July 2013, the Company’s  board of
directors and stockholders approved an amendment of the  Company’s certificate of incorporation to,
among other things, change the definition of a designated public offering to remove the per share price
requirement and to set the threshold at gross proceeds to the Company of at least $25.0 million.

18. Securities Registration and Sales Agreement

In October 2014, the Company entered into a sales agreement with Cantor Fitzgerald & Co.
(‘‘Cantor’’) to create an at-the-market equity program  under which the Company from time to time
may offer and sell shares of its Common Stock, having  an aggregate  offering price of up to $20,000,000
through Cantor. Upon delivery of a placement notice and subject to the terms and conditions of the
sales agreement, Cantor will use its commercially  reasonable efforts  to  sell the shares from time to
time, based upon the Company’s instructions. The Company has provided Cantor with customary
indemnification rights, and Cantor will be entitled to a commission of up to 3.0% of the gross proceeds
per share sold. Sales of shares, if any, under the sales  agreement may be made in transactions that are
deemed to be ‘‘at the market offerings’’ as defined in  Rule  415 under the  Securities Act of 1933, as
amended, including sales made by means of ordinary brokers’ transactions,  including on The NASDAQ
Global Select Market, at market prices or as otherwise agreed with Cantor. The Company has no
obligation to sell any shares under the sales  agreement, and may at any time suspend offers under  the
sales agreement or terminate the sales agreement.  A registration statement (Form S-3 No.  333-199219),
relating to the shares, which was filed with the SEC became effective on November 20, 2014.  As of
December 31, 2014, no shares had been sold under this agreement. This report shall  not  constitute an
offer to sell or the solicitation of an offer to buy nor shall there be any sale of the shares in any state
in which such offer, solicitation or sale would  be  unlawful prior to registration or qualification under
the securities laws of any such state.

19. Subsequent Event

During February 2015, the Company reduced  its workforce  by approximately 35% and terminated
the lease for one of its two U.S. office facilities. The  Company expects the costs of these actions to be
approximately $1 million, comprised primarily of severance and continuation of benefits coverage for
the terminated employees, which extend into the third quarter of 2015.

F-36

F-37

Onconova Therapeutics, Inc.

Notes to Consolidated Financial Statements (Continued)

20. Quarterly Data (unaudited) (Continued)

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

2013

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

$ 1,116,000

$

591,000

$ 1,116,000

$ 1,930,000

General and administrative . . . . . . . . . .
Research and development . . . . . . . . . . .

3,346,000
12,756,000

3,117,000
10,047,000

5,927,000
15,293,000

4,403,000
12,086,000

Total operating expenses . . . . . . . . . . .

16,102,000

13,164,000

21,220,000

16,489,000

Loss from operations . . . . . . . . . . . . . . . .

(14,986,000)

(12,573,000)

(20,104,000)

(14,559,000)

Change in fair value of warrant liability . . .
Interest expense . . . . . . . . . . . . . . . . . . . .
Other income, net . . . . . . . . . . . . . . . . . . .

14,000
—
127,000

(2,000)
(2,000)
15,000

(31,000)
(1,000)
47,000

61,000
(1,000)
(126,000)

Net loss before income taxes . . . . . . . . . . .
Income taxes . . . . . . . . . . . . . . . . . . . . . .

(14,845,000)
—

(12,562,000)
—

(20,089,000)
432,000

(14,625,000)
3,000

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss attributable to non-controlling

interest . . . . . . . . . . . . . . . . . . . . . . . . .

Net loss attributable to Onconova

(14,845,000)

(12,562,000)

(20,521,000)

(14,628,000)

—

—

—

13,000

Therapeutics, Inc . . . . . . . . . . . . . . . . . .

(14,845,000)

(12,562,000)

(20,521,000)

(14,615,000)

Accretion of redeemable convertible

preferred stock . . . . . . . . . . . . . . . . . . .

(1,019,000)

(1,032,000)

(269,000)

—

Net loss applicable to common stockholders

$(15,864,000) $(13,594,000) $(20,790,000) $(14,615,000)

Net loss per share of common stock, basic

and diluted* . . . . . . . . . . . . . . . . . . . . .

$

(6.08) $

(5.21) $

(1.34) $

(0.68)

Basic and diluted weighted average shares

outstanding . . . . . . . . . . . . . . . . . . . . . .

2,607,406

2,609,495

15,480,416

21,419,208

*

Earnings Per Share (EPS) in each quarter is computed using the  weighted-average number of
shares outstanding during that quarter while EPS for the full year  is computed using the weighted-
average number of shares outstanding during the  year.  Thus, the sum of the four quarters’ EPS
does not equal the full-year EPS.

F-38