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Rexahn Pharmaceuticals, Inc.

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FY2011 Annual Report · Rexahn Pharmaceuticals, Inc.
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Pipeline Overview: 

Rexahn’s  diverse  portfolio  of  oncology  compounds is 
unique  for  a  company  of  its  size.  Our  collection  of 
eight  differentiated  oncology  assets  span  major 
classes of cancer drugs and have the potential to drive 
Rexahn’s value for many years to come. 

®

The  most  clinically-advanced  compound 
in  our 
oncology  program  is  Archexin
,  a  novel  first-in-class 
Akt-1  inhibitor  with  FDA  orphan  designation  in  the 
treatment  of  cancers 
tumors, 
including pancreatic and ovarian cancer. Archexin specifically blocks the production 
of  Akt-1,  a  molecule  that  plays  a  central  role  in  the  uncontrolled  growth  of  tumor 
mass,  and  therefore  may  play  an  important  role  in  cancer  chemotherapy  with 
improved  efficacy  and  tolerability. Archexin  is  in  Phase  II  clinical  trials  for the 
treatment of pancreatic cancer with results expected in Q3, 2012. 

in  various  solid 

Another  rapidly-advancing  compound 
is  RX-3117,  a  best-in-class  cytotoxic 
antimetabolite  nucleoside  compound,  which  is  being  co-developed  with  Teva 
Pharmaceutical Industries for the treatment of several cancers, including pancreatic 
cancer.  Preclinical  studies  have  shown  RX-3117  to  have  a  high  bioavailability  and 
superior toxicity profile compared to gemcitabine, the current first-line therapy for 
pancreatic and other cancers.  In early 2012, RX-3117 began a Phase I, exploratory, 
first-in-human  clinical  trial  of  RX-3117  with  preliminary  results  expected  in  Q3, 
2012.  

A compound that we are particularly excited about is RX-5902, which represents the 
first  of  what  we  expect  to  be  a  growing  family  of  quinoxaline-derived  compounds. 
To date, RX-5902 has shown to be a novel regulator of p68 RNA helicase, which is 
known to play a vital role in cell proliferation, gene transcription and translation. An 
IND is expected to be filed in Q2, 2012. 

Rexahn’s extended portfolio of oncology drug candidates features: 
RX-8243

Aurora A)

 is a novel isoquinolinamine analogue that inhibits Ark1 (

 kinase 
and  other  Ser/Thr  kinase  in  cancer  cells.  RX-8243  is  a  multikinase  inhibitor  that 
downregulates signal molecules of RAS as well as PI3K pathways such as activated 
forms of ERK, p38, and Akt. Preclinical studies showed that RX-8243  blocks tumor 
growth in xenograft models at low nanomolar concentrations.  
RX-1792

  is  a  quinazoline  analogue  that  inhibits  EGFR  (epidermal  growth  factor 
receptor), a critical component of tumor growth and metastasis. Preclinical studies 
showed that RX-1792 inhibits tumor growth in xenograft models. 

 
 
 
 
 
 
 
 
RX-0047-N

  is  a  potent  inhibitor  of  HIF-1α,  a  key  transcription  factor  involved  in 
cancer  cell  survival,  metastasis,  and  angiogenesis.  Studies  in  xenograft  models 
showed  that  RX-0047  inhibits  tumor  growth  in  the  lung  and  prostate  and  blocks 
metastasis.  RX-0047-N 
is  a  nanoliposomal  product  of  RX-0047  with  high 
incorporation efficiency and good stability. 
RX-0201-N

 is a first-in-class, potent inhibitor of Akt protein kinase in the treatment 
of  cancer.  Akt  regulates  signal  processes  of  cell  proliferation  and  survival, 
angiogenesis, and drug resistance in cancer. RX-0201-N is a nanoliposomal product 
of RX-0201 with high incorporation efficiency and good stability. 
RX-21101

 is an anticancer polymer drug conjugate that can overcome the downside 
of  cytotoxic  compounds,  such  as  poor  solubility,  stability,  and  severe  adverse 
reactions.  Conjugating  water-soluble  and  non-toxic  HPMA  to  conventional 
anticancer  compounds  bolster  efficacy  while  lowering  toxicity  by  specific  tumor 
targeting and increased stability in the body. 

Rexahn’s  robust  oncology  portfolio  is  augmented  by  a  pipeline  of  clinical-stage 
central nervous system (CNS) compounds. Rexahn’s CNS assets, Serdaxin
 for major 
depressive  disorder  (MDD)  and  Zoraxel™  for  erectile  dysfunction  (ED),  have  each 
progressed into Phase II clinical trials. Both of these partnerable clinical-stage drugs 
offer novel approaches to treating substantial, underserved markets. 

®

 
 
 
 
 
 
 
Chairman Letter:  

Dear fellow stockholder: 

for 

strategy 

success.  With 

2011 was a year of adapting to market events and tuning 
the 
long-term 
our 
disappointing  results  of  our  Serdaxin  Phase  IIb  trial, 
Rexahn  made  the  decision  to  focus  in  the  near  term  on 
our  oncology  program.  We  made  this  decision  after 
careful  deliberation  of  how  best  to  apply  the  firm’s 
resources to realize near-term value appreciation for our 
shareholders.  Oncology  is  an  area  where  we  have  a 
particularly  strong  expertise,  a  promising  pipeline,  and 
potential to make an impact. 

As  a  result,  I  am  pleased  to  report  that  we  have  made  meaningful  strides  in  our 
oncology program, driving short-term value as well as our longer-term competitive 
position. 

Of note, we advanced Archexin into a Phase II clinical trial in pancreatic cancer and 
have completed patient enrollment. We expect to report top-line results from this 
trial in late 2012. Archexin is a first in class, potent Akt protein kinase inhibitor with 
the potential to inhibit cancer cell survival and proliferation, angiogenesis, and drug 
resistance. Archexin has FDA orphan drug designation for five different cancer 
types, including renal cell carcinoma, glioblastoma, pancreatic, stomach, and ovarian 
cancers. 

We continue to advance the clinical program for RX-3117 as well. This compound is 
partnered with Teva Pharmaceutical Industries Limited. Preclinical studies have 
shown the compound’s high bioavailability and good safety profile are superior to 
the current first-line therapy for pancreatic and other cancers. In early 2012, we 
started a Phase I exploratory, first-in-human clinical trial of RX-3117 and expect to 
have preliminary results before the end of the year.  

Additionally, Rexahn has built a significant intellectual property position in the class 
of chemicals called quinoxalines, which we believe can give birth to new class of 
potent oncology compounds. The first of those quinoxaline compounds is RX-5902. 
This first-in-class agent for RNA helicase inhibition is an exciting preclinical 
oncology asset that has extremely potent anti-tumor properties, and that also 
exhibits strong anti-proliferative activity against known drug-resistant cancer cells, 
as well as a synergistic effect with known anti-cancer drugs. We are working to 
advance RX-5902 into clinical testing in 2012. 

With respect to our CNS portfolio, I want to make it clear to shareholders that 
despite Serdaxin’s clinical trial setback, we believe that both Serdaxin and Zoraxel 
are substantive assets. To maximize the value of these assets for shareholders, we 

 
 
 
are actively evaluating strategic options that will enable us to further develop these 
drugs. 

Given  the  depth  of  Rexahn’s  portfolio  of  assets  there  is  ample  reason  to  be 
enthusiastic  about  the  company’s  prospects.  We  expect  that  2012  will  be 
another critical year for the company, as we work to advance and expand our 
oncology  pipeline,  and  find  alternative  approaches  to  advancing  our  CNS 
portfolio. 

On  behalf  of  our  Board  and  our  employees,  I  would  like  to  thank  you  all  for 
your continued support. 

Sincerely, 

Chang H. Ahn, Ph.D. 
Chairman and CEO 

 
 
 
 
 
 
 
 
 
 
 
 
 
UNITED STATES SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549  

Form 10-K 

  

  

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
EXCHANGE ACT OF 1934  
   For the fiscal year ended December 31, 2011 

OR  
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 
SECURITIES EXCHANGE ACT OF 1934  
   For the transition period from          to            

Commission file number: 001-34079 
Rexahn Pharmaceuticals, Inc.  
(Exact name of registrant as specified in its charter)  

Delaware  
(State or other jurisdiction of 
incorporation or organization)  

15245 Shady Grove Road, Suite 455 
Rockville, Maryland 
(Address of principal executive offices)  

11-3516358  
(I.R.S. Employer 
Identification No.)  

20850 

(Zip Code)  

 (240) 268-5300 
(Registrant’s telephone number, including area code)  
Securities registered pursuant to Section 12(b) of the Exchange Act:  

Title of Each Class  
Common Stock, $.0001 par value per share  

    Name of Each Exchange on Which Registered  
NYSE AMEX 

Securities registered pursuant to Section 12(g) of the Exchange 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      No   

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

the Exchange Act.  Yes      No   

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

of the Exchange Act 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      No   

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      No   

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. [  ] 

 
   
   
   
   
   
 
   
   
   
   
      
   
   
 
 
 
   
 
 
 
 
 
 
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. (Check one):  

Large accelerated filer  

Accelerated filer   

Non-accelerated filer    Smaller reporting company   

                                                                  (Do not check if a smaller reporting company)  

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange 

Act).  Yes      No   

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed 

by reference to the price at which the common equity was last sold, or the average bid and asked price of such 
common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter: As of 
June 30, 2011, the aggregate market value of the registrant’s common stock held by non-affiliates of the 
registrant was $93,016,125 based on the closing price reported on NYSE Amex.  

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of 

the latest practicable date:  

Class  

Outstanding at March 15, 2012 

Common Stock, $.0001 par value per share  

95,345,656 shares 

DOCUMENTS INCORPORATED BY REFERENCE  

Document  

Parts Into Which Incorporated  

Portions of the registrant’s Proxy Statement for the 
Annual Meeting of Stockholders to be held on    
June 18, 2012  

Part III  

ii 

 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
 
 
 
   
   
 
   
   
 
 
Cautionary Statement Regarding Forward-Looking Statements.  This Annual Report on 
Form 10-K contains statements (including certain projections and business trends) accompanied 
by such phrases as “believe,” “estimate,” “expect,” “anticipate,” “will,” “intend” and other 
similar expressions, that are “forward-looking statements” as defined in the Private Securities 
Litigation Reform Act of 1995.  We caution that forward-looking statements are based largely on 
our expectations, and are subject to a number of known and unknown risks and uncertainties that 
are subject to change based on factors which are, in many instances, beyond our control.  Actual 
results, performance or achievements may differ materially from those contemplated, expressed, 
or implied by the forward-looking statements.  

The following factors, among others, could cause our financial performance to differ 

materially from that expressed in such forward-looking statements: 

• 

• 

• 

• 

• 

• 

• 

our lack of profitability and the need for additional capital to operate our business; 

our  ability  to  obtain  the  necessary  U.S. and  worldwide  regulatory  approvals  for  our  drug 
candidates; 

successful and timely completion of clinical trials for our drug candidates; 

demand for and market acceptance of our drug candidates; 

the availability of qualified third-party researchers and manufacturers for our drug development 
programs; 

our ability to develop and obtain protection of our intellectual property; and 

other risks and uncertainties, including those set forth herein under the caption “Risk Factors” and 
those detailed from time to time in our filings with the Securities and Exchange Commission.  

These  forward-looking  statements  are  made  only  as  of  the  date  hereof,  and  we  undertake  no 
obligation  to  update  or  revise  the  forward-looking  statements,  whether  as  a  result  of  new  information, 
future  events  or  otherwise.    The  safe  harbors  for  forward-looking  statements  provided  by  the  Private 
Securities  Litigation  Reform Act  are  unavailable  to  issuers  of  “penny  stock.”    Our  shares  may  be 
considered a penny stock and, as a result, the safe harbors may not be available to us. 

iii 

 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 

INDEX  

PAGE 

PART I .............................................................................................................................................1 
Item 1.  Description of Business ................................................................................................1 
Item 1A.  Risk Factors .............................................................................................................16 
Item 1B.  Unresolved Staff Comments ...................................................................................27 
Item 2.  Description of Property .............................................................................................27 
Item 3.  Legal Proceedings ......................................................................................................28 
Item 4.  Mine Safety Disclosures .............................................................................................28 

PART II.........................................................................................................................................29 

Item 5.  Market for Common Equity, Related Stockholder Matters and 

Issuer Purchases of Equity Securities ....................................................................29 
Item 6.  Selected Financial Data .............................................................................................32 
Item 7.  Management’s Discussion and Analysis of Financial Condition 

and Results of Operation .........................................................................................33 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk ...........................48 
Item 8.  Financial Statements and Supplementary Data ......................................................48 
Item 9. Changes In and Disagreements With Accountants on Accounting 

and Financial Disclosure .........................................................................................48 
Item 9A.  Controls and Procedures ........................................................................................48 
Item 9B.  Other Information ...................................................................................................53 

PART III ........................................................................................................................................54 
Item 10.  Directors, Executive Officers and Corporate Governance ..................................54 
Item 11.  Executive Compensation .........................................................................................54 
Item 12. Security Ownership of Certain Beneficial Owners and 

Management and Related Stockholder Matters ...................................................54 

Item 13.  Certain Relationships and Related Transactions; and Director 

Independence ............................................................................................................54 
Item 14.  Principal Accounting Fees and Services ................................................................54 
Item 15.  Exhibits, Financial Statement Schedules ...............................................................55 

SIGNATURES ...............................................................................................................................58 

iv 

 
 
 
Item 1.  Description of Business 

PART I 

Any  references  to  “we,”  “us,”  “our,”  the  “Company”  or  “Rexahn”  shall  mean  Rexahn 

Pharmaceuticals, Inc. 

We are a development stage biopharmaceutical company focusing on the development of  novel 
cures  for  cancer  to  patients  worldwide.    Our  mission  is  to  discover  and  develop  new  medicines  for 
diseases that plague patients with no effective cures, in particular high  mortality cancers.  Our pipeline 
features one drug candidate in Phase II clinical trials this year and several other drug candidates in pre-
clinical  development.    Our  strategy  is  to  continue  building  a  significant  product  pipeline  of  innovative 
medicines that we will commercialize alone or with pharmaceutical partners.  In addition, we have two 
CNS candidates, Serdaxin and Zoraxel, that are in clinical stages and we are exploring options for further 
development.  For a description of our pipeline drug candidates, see “Our Pipeline Drug Candidates” in 
this Item 1. 

Our  principal  corporate  office  is  located  at  15245  Shady  Grove  Road,  Suite  455,  Rockville, 

Maryland 20850 in Maryland’s I-270 technology corridor.  Our telephone number is (240) 268-5300. 

Rexahn currently has one clinical stage oncology candidate: Archexin, an inhibitor of the protein 
kinase  Akt.  Akt  plays  critical  roles  in  cancer  cell  proliferation,  survival,  angiogenesis,  metastasis,  and 
drug  resistance.    Archexin  received  “orphan  drug”  designation  from  the  U.S.  Food  and  Drug 
Administration (“FDA”) for five cancer indications (renal cell carcinoma (“RCC”), glioblastoma, ovarian 
cancer, stomach cancer and pancreatic cancer).  The FDA orphan drug program enables expedited FDA 
review  or  approval  process,  seven  years  of  marketing  exclusivity  after  approval  and  tax  incentives  for 
clinical research.    Archexin is  currently  in  Phase  II  clinical  trials  for the treatment  of  pancreatic cancer 
with enrollment completed in 2011 and results expected in the third quarter of 2012.  

Serdaxin  is  a  developmental  stage  drug  candidate  for  major  depressive  disorder.  (“MDD”) 
Rexahn completed a 300 patient Phase IIb clinical trial for MDD with Serdaxin in 2011.  On November 4, 
2011,  we  released  the  results  of  the  clinical  trial  which  showed  Serdaxin  was  similar  to  placebo  as 
measured  by  a  change  in  the  Montgomery-Asberg  Depression  Rating  Scale  (“MADRS”).    All  groups 
showed an approximate 14 point improvement in the protocol defined primary endpoint of MADRS, and 
had a substantial number of patients who demonstrated a meaningful clinical improvement from baseline.  
The  study  showed  that  Serdaxin  was  safe  and  well  tolerated.    At  this  point,  we  have  not  made  a 
determination  of  Serdaxin’s  future  paths  and  are  currently  not  allocating  resources  to  further  develop 
Serdaxin to treat MDD.  

Zoraxel is a developmental stage drug for sexual dysfunction that directly modulates the sexual 
activity  control  center  in  the  brain.    Zoraxel  enhances  the  action  of  serotonin  and  dopamine,  brain 
signaling  molecules  that  play  a  key  role  in  three  phases  of  male  sexual  activity:  arousal,  erection  and 
release.    Zoraxel  is  the  first  erectile  dysfunction  (“ED”)  therapeutic  to  affect  all  three  of  these  phases.  
Preclinical studies demonstrated that Zoraxel improves sexual performance via enhanced motivation and 
arousal.    Due  to  its  centrally  acting  mechanism  of  action,  Zoraxel  may  also  have  potential  use  in  the 
treatment  of  female  sexual  dysfunction.    Given  the  recently  reported  results  of  the  Serdaxin  Phase  IIb 
clinical trial, and the fact that Zoraxel and Serdaxin share a common active ingredient, we are evaluating 
how to proceed with the Phase IIb study of Zoraxel. 

1 

 
 
 
 
 
 
 
 
 
 
 
Company Background 

Our company resulted from a merger of Corporate Road Show.Com Inc., originally a New York 
corporation (CPRD) which was formed in November 1999, and Rexahn, Corp, a Maryland corporation 
immediately after giving effect to a 1-for-100 reverse stock split and the reincorporation of CPRD as a 
Delaware  corporation  under  the  name  “Rexahn  Pharmaceuticals,  Inc.”  (Rexahn  Pharmaceuticals),  with 
Rexahn, Corp surviving as a wholly owned operating subsidiary of ours (the Merger).  The Merger was 
effective  as  of  May 13,  2005.    On  September 29,  2005,  Rexahn,  Corp  merged  with  and  into  us,  and 
Rexahn, Corp’s separate existence was terminated. 

Rexahn, Corp was founded in March 2001 and began as a biopharmaceutical company focusing 
on oncology drugs.  Dr. Chang Ahn, our Chairman, a former U.S. Food and Drug Administration (FDA) 
reviewer,  and  National  Cancer  Institute  (NCI)  research  scientist,  helped  guide  initial  research  and 
commercialization efforts in targeted cancer drugs and the company’s expansion into CNS disorders.  Our 
mission is to find new cures that improve the health and wellness of patients with life-threatening or life-
altering diseases.  

Industry and Disease Markets  

Overview 

Our research and development focuses on several therapeutic areas that affect the lives of many 
people—cancer,  and  to  a  lesser  extent,  CNS  disorders  such  as  depression,  mood  disorders,  and  sexual 
dysfunction.  These disorders can have a debilitating effect on the quality of life for patients who suffer 
from them.  Our strategy is to develop innovative drugs that alter the signaling pathways implicated in 
these diseases, and thereby help patients regain an improved quality of life. 

According to the Center for Disease Control and Prevention, cancer claims the lives of more than 
half a million Americans each year and is the second leading cause of death among Americans.  In 2010, 
the National Cancer Institute estimated that the overall cost of cancer was $264 billion and approximately 
1.6 million new cancer cases were diagnosed in 2011.1  Global sales of cancer drugs are predicted to grow 
to  $70  billion  by  2018  in  the  seven  major  markets,  driven  mainly  by  commercialization  of  molecular 
targeted therapies.2   

Currently,  there  are  45  million estimated  cases  of depression  in the  US  and  its drug  cost alone 
exceeded  $19  billion  in  2007.    Several  classes  of  drugs  are  available  on  the  market  for  depression, 
including  selective  serotonin  uptake  inhibitors  (“SSRI”),  serotonin-norepinephrine  reuptake  inhibitors 
(“SNRI”), and tricyclic antidepressants (“TCA”). However, these drugs are prone to side-effects, such as 
insomnia,  weight  gain  and  sexual  dysfunction,  and they  can  take  up  to  6  weeks  to  relieve  depression 
symptoms.  

Erectile  dysfunction  causes  the  consistent  inability  to  attain  and  maintain  an  erection  sufficient 
for satisfactory sexual intercourse.  Erectile problems may be due to psychogenic causes (e.g., depression 
or  stress),  organic  causes,  or  both.    The  launch  of  the  first  orally  available  phosphodiesterase  (PDE)-5 
inhibitor,  Viagra®,  in  1998  established  a  new  standard  of  care  for  ED  and  pioneered  a  new  market.  
Cialis® and Levitra® were subsequently launched in 2003 as second-generation PDE-5 inhibitor drugs.  

1. Cancer Facts and Figures 2011 (American Cancer Society) 
2. Cancer Market and Definition Overview, 2009 (Datamonitor). 
2 

 
 
 
 
 
 
 
 
 
 
 
 
                                                 
However,  30%  of  patients  are  refractory  or  unresponsive  to  the  leading  PDE-5  inhibitor  drugs.    In 
addition, PDE-5 inhibitors also increase the risk of a variety of cardiovascular diseases, including heart 
attack.  As evidenced by clinical data from the Phase IIa trial, Zoraxel does not have some of the safety 
concerns  seen  with  PDE-5  inhibitors.  Contrary  to  peripherally  acting  PDE-5  inhibitors,  Zoraxel  acts 
centrally in the brain affecting all three aspects of sexual activity. 

Current Cancer Treatments 

The life-threatening nature of cancer, and the various ways of trying to cure cancer to save lives, 
has led to treatment(s) with surgery, radiation therapy, and chemotherapy.  Surgery is widely used to treat, 
and in many cases cure cancer; however, there may  be related or significant complications and surgery 
may be ineffective if metastasis has occurred.  Radiation therapy, or radiotherapy, can be highly effective.  
Ionizing radiation deposits energy that injures or destroys cells in the area being treated by damaging their 
genetic material, making it impossible for these cells to continue to grow.  Although radiation damages 
both cancer cells and normal cells, the normal cells are generally able to repair themselves and function 
properly.    Cytotoxic  cancer  drugs  destroy  cancer  cells  by  interfering  with  various  stages  of  the  cell 
division  process.    However,  many  current  cytotoxic  chemotherapy  drugs  have  limited  efficacy  and 
debilitating adverse side effects and may result in the development of multi-drug resistance.  

Unmet Needs in Cancer  

Despite  significant  advances  in  cancer  research  and  treatments,  high  unmet  needs  still  remain 

including:  

•  Long-term management of cancers:  Surgery, chemotherapy or radiation therapy may not 
result  in  long-term  remission,  though  surgery  and  radiation  therapies  are  considered  cure 
methods.  Therefore, there is a need for more effective drugs and adjuvant therapies to treat 
relapsed and refractory cancers. 

•  Multi-drug  resistance:  Multi-drug  resistance  is  a  major  obstacle  in  successful  clinical 

outcomes. 

•  Debilitating  toxicity  by  chemotherapy:  Chemotherapy  as  a  mainstay  of  cancer  treatment 

induces severe adverse reactions and toxicities, affecting quality of life or life itself. 

Archexin:  First-in-class Anticancer Akt Inhibitor 

Archexin  is  a  first-in-class,  potent  inhibitor  of  the  Akt  protein  kinase  (Akt)  in  cancer  cells. 
Archexin  has  FDA  orphan  drug  designations  for  five  cancers  (RCC,  glioblastoma,  and  cancers  of  the 
ovary, stomach and pancreas).  Multiple indications for other solid tumors can also be pursued. Archexin 
is  differentiated  by  its  ability  to  inhibit  both  activated  and  inactivated  forms  of  Akt,  and  to  potentially 
reverse  the  drug  resistance  observed  with  the  protein  kinase inhibitors.    Other  targeted drugs  may  only 
inhibit inactivated Akt and be vulnerable to development of drug resistance.  Akt activation plays a key 
role in cancer cell proliferation, survival, angiogenesis and drug resistance.  Akt is over-activated in many 
human cancers (e.g., breast, colorectal, gastric, pancreatic, prostate, and melanoma cancers).  A method to 
control the Akt activity involves inhibition of signaling molecules upstream of Akt in cancer cells (e.g., 
EGFR or VEGFR inhibitors).  In this case, only the activity of native Akt is indirectly affected.  However, 
signal transmission for cancer progression and resistance occurs when Akt is activated, thus inhibition of 
the activated Akt becomes more important.  Archexin inhibits both activated and native Akt. 

3 

 
 
 
 
 
 
 
 
 
 
 
Archexin  is  an  antisense  oligonucleotide  (“ASO”)  compound  that  is  complementary  to  Akt 
mRNA, and highly selective for inhibiting mRNA expression and production of Akt protein.  Archexin 
has demonstrated excellent safety, tolerability and minimal side effects in a Phase I study in patients with 
advanced  cancers,  where  Grade  3  fatigue  was  the  only  dose-limiting  toxicity  and  no  significant 
hematological abnormalities were observed. The main objectives of the Phase I study were to determine 
maximum  tolerated  dose,  dose  limiting  toxicity,  and  pharmacokinetic  parameters  for  Archexin 
monotherapy.  The Archexin Phase I study design was an open label, single arm ascending dose, safety 
and  tolerability  study.    Archexin  is  currently  in  Phase  II  clinical  trials  for  the  treatment  of  pancreatic 
cancer with enrollment completed in September, 2011, and with results currently anticipated in the third 
quarter of 2012.     

The Company has been issued a U.S. patent for Archexin that covers composition of matter and 
broad  claims  for  the  nucleotide  sequences  of  the  antisense  compounds  that  target  and  inhibit  the 
expression  of  Akt  in  human  tissues  or  cells,  and  the  method  of  using  the  compounds  to  induce 
cytotoxicity in cancer cells. 

Current CNS Treatments 

The U.S. National Institute of Mental Health estimates that 26 percent of adults, or more than 55 
million Americans, suffer from a diagnosable mental disorder in a given year.  The depression market is 
one of the more mature and established markets in CNS therapeutics. Current treatments for depression 
focus  on  serotonin-based  drugs  (e.g.,  selective  serotonin  reuptake 
inhibitors)  as  a  first-line 
treatment.    Many  depression  patients  are  refractory  to  the  various  classes  of  antidepressants  and  suffer 
from severe side effects. 

Unmet Needs in CNS Disorders: Major Depressive Disorder 

Unmet needs for treating MDD include3 the following: 

•  Faster onset of action. Current antidepressants take four to six weeks to relieve depression 
symptoms.  The delay in onset of antidepressant activity is associated with the most common 
antidepressant  drug  classes  including:  selective  serotonin  reuptake  inhibitors  (SSRIs), 
inhibitors 
serotonin-norepinephrine  reuptake 
(MAOIs), and tricyclic antidepressants (TCAs). 

inhibitors  (SNRIs),  monoamine  oxidase 

•  Fewer side effects. The most widely used antidepressants, SSRIs, are linked with side effects 
of insomnia, weight gain and sexual dysfunction.  The safety of SSRIs has also been called 
into  question  over  concerns  about  inducing  suicidal  ideations.    Use  of  benzodiazepines  is 
linked with side effects of cognitive deficit and motor impairment. 

• 

Improved  compliance.  High  rate  of  serious  side  effects  among  patients  taking  anti-
depressant drugs leads many to stop taking the prescribed medicines, resulting in high non-
compliance rates of 40% to 65%. 

•  Need  for  greater  efficacy.    Remission  is  one  key  objective  of  depression  treatment.    The 
proportion of patients achieving remission after antidepressant treatment ranges from 35% to 

3   Depression, June 2007; Stakeholder Insight: Major Depressive Disorder (MDD), March 2006 (Datamonitor). 

4 

 
 
 
 
 
 
 
 
 
 
 
                                                 
55% depending on the severity of depression.4  New drugs with much higher efficacy as well 
as wider coverage of the depression patients are needed. 

•  Reduced MDD relapse.  High relapse rate of about 35% and lingering symptoms are serious 

problems in antidepressant treatment. 

Serdaxin: CNS Drug to Treat Neurodegenerative Disorders, Depression, and Mood Disorders 

Serdaxin is an extended release formulation of clavulanic acid, which is an ingredient present in 
antibiotics approved by the FDA.  We had been developing Serdaxin for the treatment of depression and 
neurodegenerative disorders.  From January to September, 2011, we conducted a randomized, double-
blind, placebo-controlled study compared two doses of Serdaxin, 0.5 mg and 5 mg, to placebo over an 8-
week treatment period for MDD patients.  On November 4, 2011, we released results that the study 
showed Serdaxin was similar to a placebo as measured by a change in MADRS scores.  All groups 
showed an approximate 14 point improvement in the protocol defined primary endpoint of MADRS, and 
had a substantial number of patients who demonstrated a meaningful clinical improvement from 
baseline.  The study showed that Serdaxin was safe and well tolerated.  At this point, we have not made a 
determination of Serdaxin’s future paths or resource allocations to further develop Serdaxin to treat 
MDD. 

Current Sexual Dysfunction Treatment 

The  launch  of  the  first  orally  available  PDE-5  inhibitor,  Viagra,  in  1998  established  a  new 
standard care for ED and pioneered a new market.  Cialis and Levitra were subsequently launched in 2003 
as  second-generation  PDE-5  inhibitor  drugs.    However,  30%  of  patients  are  refractory  to  the  leading 
PDE-5 inhibitor drugs.  In addition, PDE-5 inhibitors also increase the risk of a variety of cardiovascular 
diseases, including heart attack.  The majority of ED drugs in the R&D pipeline work by a ‘me-too’ PDE-
5 inhibitor mechanism of action.5  Dopamine agonists are also in clinical trials for ED.6   

Unmet Needs in Sexual Dysfunction 

There  are  potential  severe  side  effects  associated  with  PDE-5  drugs,  such  as  priapism,  severe 
hypotension, myocardial infarction, sudden death, increased intraocular pressure and sudden hearing loss.  
PDE-5  inhibitors  only  target  end  organ  erectile  function,  and  work  in  peripheral  blood  vessels.    Other 
than PDE-5 inhibitors, there are no dominating drugs for treatment of sexual dysfunction. 

•  Need for Greater Efficacy- An estimated 30% of US men are refractory to the leading 
PDE-5  inhibitor  drugs  (Viagra,  Cialis,  and  Levitra),  which  work  peripherally  and 
mechanically. Certain segments of the ED patient population that respond less to PDE-5 
inhibitors  include  diabetics,  obese  or  post-surgical  prostatectomy  or  coronary  risk 
patients.   

4   Remission rates tend to vary based on factors such as: treatment algorithm and drugs prescribed, patient geographic population 
or country, prescribing doctor (primary care, psychiatrist), and time at which remission rates are measured (3, 6, 8, or 10 weeks 
of treatment). Depression, June 2007; MDD, March 2006 (Datamonitor). 

5 Erectile Dysfunction, 2006 (Datamonitor). 
6 Gresser U and Gleiter CH. Erectile Dysfunction: Comparison of efficacy and side effects of the PDE-5 inhibitors sildenafil, 

vardenafil and tadalafil (Review of Literature). Eur J Med Res (2002) 7:435-46. 

5 

 
 
 
 
 
 
 
 
 
 
                                                 
•  Reduced  Side  Effects-  PDE-5  inhibitors  have  significant  drawbacks  of  cardiovascular 
risks  and  other  side  effects  (e.g.,  priapism,  severe  hypotension,  myocardial  infarction, 
ventricular arrhythmias, sudden death and increased intraocular pressure). 

Zoraxel: Drug Candidate to Treat Erectile Dysfunction Sexual Dysfunction 

Zoraxel is centrally acting in the CNS and may be a more effective ED treatment for patients who 
are responsive or unresponsive to PDE-5 inhibitors.  Zoraxel is an orally administered, on-demand tablet 
to treat sexual dysfunction, and has extensive and well-established safety in humans.  Zoraxel is a dual 
enhancer of neurotransmitters in the brain that play a key role in sexual activity phases of motivation and 
arousal, erection and release, and may be the first ED drug to affect all three of these phases of sexual 
activity. In preclinical animal studies, Zoraxel significantly improved sexual performance and suggested 
positive  behavioral  effects,  however,      Given  the  recently  reported  results  of  the  Serdaxin  Phase  IIb 
clinical trial, and the fact that Zoraxel and Serdaxin share a common active ingredient, we are currently 
evaluating how to proceed with the Phase IIb study of Zoraxel. 

Market Opportunity 

There are several factors favorable for commercializing new cancer, CNS and sexual dysfunction 

drugs that may be first-in-class or market leaders, including: 

•  Expedited  Regulatory  or  Commercialization  Pathways.    Drugs  for  life-threatening 
diseases such as cancer are often treated by the FDA as candidates for fast track, priority 
and  accelerated  reviews.    Expedited  regulatory  review  may  lead  to  clinical  studies  that 
require fewer patients, or expedited clinical trials.   

•  Favorable  Environment  for  Formulary  Access  and  Reimbursement.    Cancer  drugs  with 
proven  efficacy  or  survival  benefit,  and  cost-effective  clinical  outcomes  would  be 
expected  to  gain  rapid  market  uptake,  formulary  listing  and  payer  reimbursement.    In 
addition,  drugs  that  have  orphan  designations  are  generally  reimbursed  by  insurance 
companies given that there are few, if any, alternatives.  Because mental disorders affect 
more  than  55  million  estimated  Americans,  the  burden  of  illness  is  significant  for 
insurance  companies  as  well  as  for  employers.    Given  the  significant  cost  of  treating 
behavioral  health  problems,  there  is  a  favorable  environment  for  formulary  access  and 
reimbursement for effective products that treat multiple disorders. 

•  Focus on Specialty Markets.  The marketing of new drugs to specialty physicians can be 
accomplished with a specialty sales force that requires fewer personnel and lower related 
costs  than  a  typical  sales  force  that  markets  to  primary  care  physicians  and  general 
practitioners.  

Our Strategy 

Our strategy has several key components: 

Develop innovative therapeutics with the potential to be first-in-class or market leaders 

We plan to expand our R&D pipeline and introduce more new drugs into clinical trials over the 
next five years, and develop an industry-leading oncology therapeutics franchise.  Our pipeline spans the 
6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
major  classes  of  cancer  drugs  –  molecular  targeted  therapies,  signal  transduction  and  multi-kinase 
inhibitors,  nano-medicines,  and  small  molecule  cytotoxics  (microtubule  inhibitors,  quinazoline  and 
nucleoside  analogues).    Differentiated  target  product  profiles  and  proprietary  discovery  and  research 
technology platforms further support these strategic efforts.   

Target Signal Transduction Molecules with Multiple Drug Candidates 

We  plan  to  expand  our  oncology  drug  candidate  pipeline  and  introduce  several  new  signal 
inhibitor drugs into clinical trials over the next five years.  By identifying and characterizing the genes 
and proteins that control the signaling pathways and gene expression of cancer cells, we seek to develop 
DNA/RNA-based  and  small-molecule  drugs  to  treat  a  broad  range  of  diseases  caused  by  abnormal 
expression or functions of those genes and proteins.   

Establish Partnerships with Large Pharmaceutical Companies 

In  September  2009,  we  closed  on  licensing  and  stock  purchase  agreements  with  Teva 
Pharmaceutical  Industries  (“Teva”)  for  the  development  of  our  novel  anti-cancer  compound,  RX-3117. 
The  companies  reached  an  agreement  with  respect  to  the  commercialization  and  development  of  RX-
3117.  In January, 2011, we closed on an additional private placement with Teva, pursuant to the 2009 
stock  purchase  agreement,  which  was  amended  to  increase  the  amount  of  Teva’s  investment  for  the 
further  development  of  RX-3117  and  provided  for  a  possible  third  amendment  by  Teva.    We  seek  to 
establish strategic alliances and partnerships with large pharmaceutical companies for the development of 
other drug candidates.   

Clinically Develop Drug Candidates as Orphan Drugs to Reduce Time-to-Market 

Under  the  Orphan  Drug  Act,  the  FDA  may  expedite  approval  of  new  drugs  that  treat  diseases 
affecting less than 200,000 patients each year.  This category of diseases is called an “orphan indication.”  
Incentives  in  the  Orphan  Drug  Act  include  a  faster  time-to-market  of  the  drug  (with  FDA  approval 
possible after Phase II trials instead of Phase III trials) and seven years of drug marketing exclusivity for 
the sponsor.  We plan to develop drug candidates initially for orphan category cancers in order to reduce 
the time-to-market. 

In-License Unique Technology 

We continually review opportunities to in-license and advance compounds in oncology and other 
strategic therapeutic areas that have value creating potential and will strengthen our R&D pipeline.  For 
example,  in  February 2005,  we  licensed  the  intellectual  property  of  Revaax  Pharmaceuticals  LLC 
(“Revaax”) to develop new drugs for treatment of CNS and mood disorders.   

Capitalize  on  Our  Management  Team’s  Expertise 
Commercialization 

for  Drug  Development  and  Product 

Our management team possesses clinical development experience in oncology and several other 
therapeutic  areas  that  facilitates  strategic  approaches  to  and  competitive  advantages  in,  the  design,  risk 
assessment,  and  implementation  of  drug  development  programs.  We  also  have  prior  experience  in 
pharmaceutical alliances, product launches and marketing. 

7 

 
 
 
 
 
 
 
 
 
 
 
 
Our Pipeline Drug Candidates 

We  have  three  clinical  stage  drug  candidates,  and  several  pre-clinical  drugs,  consisting  of  the 

following: 

Clinical Stage Pipeline: 

(1)  Archexin: First-in-class anticancer Akt inhibitor 

(2)  Serdaxin: CNS Disorders drug for depression and neurodegenerative diseases 

(3)  Zoraxel: ED and sexual dysfunction drug 

Pre-clinical Pipeline: 

(1) RX-1792: Small molecule anticancer EGFR inhibitor   

(2) RX-5902: Small molecule anticancer RNA helicase regulator   

(3) RX-3117: Small molecule anticancer DNA synthesis Inhibitor 

(4) RX-8243: Small molecule anticancer aurora kinase inhibitor  

(5) RX-0201-Nano: Nanoliposomal anticancer Akt inhibitor 

(6) RX-0047-Nano: Nanoliposomal anticancer HIF-1 alpha inhibitor 

(7) RX-21101: Nano-polymer Anticancer 

We have discussed our clinical stage pipeline in detail above. 

Pre-clinical Pipeline 

Our pre-clinical pipeline includes: 

(1) RX-1792: Small molecule anticancer EGFR inhibitor 

RX-1792  is  a  quinazoline  analogue  that  suppresses  EGFR  (epidermal  growth  factor  receptor), 
critical  component  of  tumor  growth  and  metastasis.  Preclinical  studies  have  shown  RX-1792  to  inhibit 
tumor growth in xenograft human tumor models. 

(2) RX-5902: Small molecule anticancer RNA helicase regulator 

RX-5902 is a novel regulator of p68 RNA helicase regulator, which is known to play a vital role 
in cell proliferation, initiation of gene transcription and has been implicated in tumor/cancer progression. 
Studies  demonstrated  superior  inhibition  in  the  growth  of  human  pancreatic  tumor,  renal  tumor,  and 
melanoma  tumor  in  nude mice  after oral administration,  without  body  weight decrease.    RX-5902  may 
enter Phase I clinical trials during the first half of 2012. 

 (3) RX-3117: Small molecule anticancer DNA synthesis inhibitor 

8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
RX-3117 is being co-developed with Teva for the treatment of cancer cells. RX-3117 has shown 
potent  anti-tumor  effects  in  xenograft  human  tumor  models.  Preclinical  studies  revealed  the  high 
bioavailability  and  superior  toxicity  profile  compared  to  gemcitabine,  the  current  first-line  therapy  for 
pancreatic and other cancers.  This compound may enter an exploratory early stage clinical trial  during 
the first quarter of 2012. 

(4) RX-8243: Small molecule anticancer aurora kinase inhibitor  

RX-8243  is  a  novel  isoquinolinamine  analogue  that  inhibits  Ark1  (Aurora)  kinase  and  other 
Ser/Thr kinase in cancer cells. RX-8243 is a multikinase inhibitor that downregulates signal molecules of 
RAS as well as PI3K pathways such as activated forms of ERK, p38 and Akt. Preclinical studies showed 
RX-8243 blocks tumor growth in xenograft models at low nanomolar concentrations. 

(5) RX-0201-Nano: Nanoliposomal anticancer Akt inhibitor 

RX-0201, the active ingredient of Archexin, is a first-in-class, potent inhibitor of the Akt protein 
kinase.  RX-0201-Nano is a nanoliposomal product of RX-0201 with high incorporation efficiency and 
good stability.  Nanoliposomal delivery of RX-0201  may provide significant clinical benefits including 
targeted  higher  cellular  uptake,  extended  circulation  time,  reduced  drug-related  toxicity,  and  improved 
efficacy.  

(6) RX-0047-Nano: Nanoliposomal anticancer HIF-1α inhibitor 

RX-0047  is  a  potent  inhibitor  of  HIF-1α,  a  key  transcription  factor  involved  in  cancer  cell 
survival,  metastasis,  and  angiogenesis..  Studies  in  xenografted  model  have  shown  RX-0047  to  inhibit 
tumor growth in lung and prostate and blocks metastasis.  RX-0047-Nano is a nanoliposomal product of 
RX-0047 with high incorporation and good stability. 

(7) RX-21101: Nano-polymer Anticancer Drug 

Among the prominent nano-polymer drugs in Rexahn, RX-21101(HPMA-docetaxel) is an 
anticancer drug that can overcome the downside of cytotoxic compounds, such as poor solubility, stability, 
and severe adverse reactions. Conjugating water-soluble and non-toxic HPMA to conventional anticancer 
compounds bolster efficacy while lowering toxicity by specific tumor targeting and increased stability in 
body. 

Competition 

We are developing new drugs to address unmet medical needs in oncology, and to a lesser extent, 
CNS  disorders, and sexual  dysfunction  markets.    Our  drug  candidates  will  be competing  with  products 
and  therapies  that  either  currently  exist  or  are  expected  to  be  developed.    Competition  among  these 
products  will  be  based  on  factors  such  as  product  efficacy,  safety,  price,  launch  timing  and  execution.  
Our  competitive  position  will  also  depend  upon  our  ability  to  attract  and  retain  qualified  personnel,  to 
obtain patent protection or otherwise develop proprietary products or processes, and to secure sufficient 
capital resources for the often substantial period between technological conception and commercial sales. 

There  are  a  number  of  pharmaceutical  and  biotechnology  companies,  as  well  as  academic 
institutions,  government  agencies  and  other  public  and  private  research  organizations,  which  are 
conducting  research  and  development  on  technologies  and  products  for  treatment  of  cancers,  CNS 
diseases  and  sexual dysfunction.   Our  competitors  may  succeed in developing  products  based on  novel 

9 

 
  
 
 
 
 
 
 
 
 
 
 
 
 
technologies  that  are  more  effective  than  ours,  which  could  render  our  technology  and  products 
noncompetitive prior to recovery by us of expenses incurred with respect to those products.  For many of 
the same reasons described above, we cannot assure you that we will compete successfully. 

Government Regulation 

Regulation by governmental authorities in the United States and in other countries constitutes a 
significant  consideration  in  our  product  development,  manufacturing  and  marketing  strategies.    We 
expect  that  all  of  our  drug  candidates  will  require  regulatory  approval  by  appropriate  governmental 
agencies  prior  to  commercialization  and  will  be  subjected  to  rigorous  pre-clinical,  clinical,  and  post-
approval testing, as well as to other approval processes by the FDA and by similar health authorities in 
foreign  countries.    U.S. federal  regulations  control  the  ongoing  safety,  manufacture,  storage,  labeling, 
record keeping, and marketing of all biopharmaceutical products intended for therapeutic purposes.  We 
believe that we are in compliance in all material respects with currently applicable rules and regulations. 

Obtaining governmental approvals and maintaining ongoing compliance with federal regulations 
are expected to require the expenditure of significant financial and human resources not currently at our 
disposal.  We plan to fulfill our short-term needs through consulting agreements and joint ventures with 
academic  or  corporate  partners  while  building  our  own  internal  infrastructure  for  long-term  corporate 
growth. 

The  process  by  which  biopharmaceutical  compounds  for  therapeutic  use  are  approved  for 
commercialization  in  the  United  States  is  lengthy.    Many  other  countries  have  instituted  an  equally 
difficult  approval  processes.    In  the  United  States,  regulations  published  by  the  FDA  require  that  the 
person or entity sponsoring and/or conducting a clinical study for the purpose of investigating a potential 
biological drug product’s safety and effectiveness submit an Investigational New Drug (IND) application 
to  the  FDA.    These  investigative  studies  are  required  for  any  drug  product  for  which  the  product 
manufacturer intends to pursue licensing for marketing the product in interstate commerce.  If the FDA 
does not object to the IND application, clinical testing of the compound may begin in humans after a 30-
day review period.  Clinical evaluations typically are performed in three phases. 

In Phase I, the drug is administered to a small number of healthy human subjects or patients to 
confirm  its  safety  and  to  develop  detailed  profiles  of  its  pharmacological  and  pharmacokinetic  actions 
(i.e., absorption, metabolism, excretion, duration of therapeutic concentration and effects, if any). 

In Phase II, the drug is administered to groups of patients (up to a total of 500) to determine its 
preliminary efficacy against the targeted disease and the requisite dose and dose intervals.  In a typical 
development program, additional animal toxicology studies precede this phase.  In some cases, the trial 
can be split into Phase IIa and  IIb studies in order to test smaller subject pools.  Some Phase I clinical 
studies may also proceed in parallel with some Phase II studies.   

In  Phase  III,  the  drug  is  administered  to  a  larger  group  of  patients  (usually  1,000  to  3,000  or 
more)  by  physicians  (study  site  investigators)  in  a  network  of  participating  clinics  and  hospitals.    The 
extensive clinical testing is intended to confirm Phase II results and to document the nature and incidence 
of adverse reactions.  Studies also are performed in patients with concomitant diseases and medications.  
Larger  patient  populations  are  evaluated  in  Phase  III  at  multiple  study  sites  and  many  clinical  trial 
programs or registration studies are conducted concurrently for the sake of time and efficiency. 

After completing the clinical studies, the product developer submits the safety and effectiveness 
data generated by the studies to the FDA in the form of a New Drug Application (NDA) to market the 
product.    It  is  the  responsibility  of  the  FDA  to  review  the  proposed  product  labeling,  the  pre-clinical 
10 

 
 
 
 
 
 
 
 
 
(animal and laboratory) data, the clinical data, the facilities utilized and the methodologies employed in 
the manufacture of the product to determine whether the product is safe and effective for its intended use. 

Even  after  initial  FDA  approval  has  been  obtained,  further  studies  may  be  required  to  provide 
additional  data  on  safety  or  to  gain  approval  for  expanded  labeling  or  treatment  indications.    Also,  the 
FDA may require post-marketing testing and surveillance programs to monitor the drug’s effects.  Side 
effects resulting from the use of drug products may prevent or limit the further marketing of the products. 

For  marketing  outside  the  United  States,  we  will  be  subject  to  foreign  regulatory  requirements 
governing  human  clinical  trials  and  marketing  approval  for  drugs.    The  requirements  relating  to  the 
conduct  of  clinical  trials,  product  licensing,  pricing  and  reimbursement  vary  widely  from  country  to 
country. 

Certain drugs are eligible in the United States for designation by the FDA as “orphan” drugs if 
their use is intended to treat a disease that affects fewer than 200,000 persons in the U.S. or the disease 
affects more than 200,000 persons in the United States but there is no reasonable expectation that the cost 
of developing and marketing a drug will be recovered from the U.S. sales of such drug.  In order for a 
sponsor to obtain orphan designation for a drug product, an application must be submitted for approval to 
the  FDA’s  Office  of  Orphan  Products  Development.    The  approval  of  an  application  for  orphan 
designation  is  based  upon  the  information  submitted  by  the  sponsor.    A  drug  that  has  obtained  orphan 
designation is said to have “orphan status.”  The approval of an orphan designation request does not alter 
the standard regulatory requirements and process for obtaining marketing approval.  Safety and efficacy 
of a compound must be established through adequate and well-controlled studies. 

Orphan  drugs  may  obtain  FDA  approval  after  successful  Phase  II  trials,  rather  than  after 
completion  of  Phase  III  trials,  resulting  in  faster  time-to-market  for  those  drugs.    If  a  sponsor  obtains 
orphan drug designation for a particular compound and is the first to obtain FDA regulatory approval of 
that compound, then that sponsor is granted marketing exclusivity for a period of seven years. 

Sales and Marketing 

Rexahn plans to commercialize unique and differentiated drugs that are first-in-class or potential 
market leaders.  We may develop cancer drugs for orphan indications initially, and then expand into more 
highly prevalent cancers.  Currently, Archexin has Orphan drug designation for five cancer indications. 
For drugs that require larger pivotal trials and/or large sales force, Rexahn seeks alliances and corporate 
partnerships  with  larger  pharmaceutical  firms.  We  also  seek  acquisition  or  in-licensing  candidates  to 
strengthen our product pipeline. 

Research Technologies  

Our research technologies are focused on our proprietary multi-target aimed ligands platform and 
nano-based  drug  delivery.  For  a  discussion  of  collaboration  arrangements  pursuant  to  which  we  obtain 
research  and  development  services  from  universities,  research  institutions  and  other  organizations,  see 
“Collaboration and License Agreements” in this item. 

11 

 
 
 
 
 
 
 
 
 
 
The Inhibitors of Multi-Expression Signals (TIMES) 

TIMES  is  Rexahn’s  unique  ligand  discovery  platform  targeting  multi-expression  signals.  Since 
cancer is a complex disease caused by multiple factors as well as genetic modifications, cancer treatment 
involves a combination of drugs with different mechanisms of action, which compound degree and extent 
of toxicities.  Rexahn’s approach is to control multiple targets important for cancer proliferation with a 
single  agent.    In  doing  so,  Rexahn  utilizes  a  proprietary,  genomics-based  integrated,  gene  expression 
system to identify potentially important targets that control multiple genes or signaling events in cancer 
cells.  

3-D Gateway of Ligand Discovery (3-D GOLD) 

3D-GOLD  is  a  drug  discovery  platform  that  integrates  3-D  natures  of  molecular  modeling, 
databases of chemicals and proteins, and ligand filtering and generation. The chemical database contains 
3D  structures  of  about  7  million  compounds.  Rexahn’s  proprietary  quantitative  structure-activity 
relationship  tool  for  innovative  discovery  and  docking  tools  are  parts  of  the  platform.  The  filtering 
module is a powerful component to determine similarity in pharmacophore and 3D fingerprinting, while 
ligand generation helps optimize the leads. 

Nano-medicine Drug Delivery  

Rexahn  has  developed  unique  proprietary  drug  delivery  nano-systems  that  may  increase  the 
availability  of  a  drug  at  the  disease  site,  minimize  adverse  reactions,  and/or  provide  longer  duration  of 
action.  Rexahn is currently testing multiple nanoliposomal- and nanopolymer-based anticancer drugs.   

Manufacturing and Distribution 

We  do  not  currently  have  the  resources  required  for  commercial  manufacturing  of  our  drug 
candidates.  We currently outsource the manufacturing of drug substances and drug products for our drug 
candidates.  We believe that there are a limited number of manufacturers that could manufacture our drug 
candidates.    We  have  no  current  plans  to  build  internal  manufacturing  capacity  for  any  product.  
Manufacturing  will  be  accomplished  through  outsourcing  or 
through  partnerships  with  large 
pharmaceutical companies.  We do not have any specific distribution plans at this time.   

Intellectual Property  

Proprietary patent and intellectual property (IP) protection for our drug candidates, processes and 
know-how is important to our business. We aggressively prosecute and defend our patents and proprietary 
technology.  Rexahn has several U.S. and international patents issued for broad IP coverage of our drug 
candidates  in  cancer,  CNS,  behavioral  and  mood  disorders,  neuroprotection  and  sexual  dysfunction, 
effective until 2020 to 2030.  In 2011, we were granted two US patents and two European patents for our 
oncology and CNS candidates.  Additional U.S., Europe, and other foreign patents are pending.  We also 
rely  upon  trade  secrets,  know-how,  continuing  technological  innovation  and  licensing  opportunities  to 
develop and maintain our competitive position. 

In particular, Rexahn owns US patents for its clinical and preclinical candidates related to RX-
1792, RX-3117, Archexin, RX-0047 and RX-8243. In addition, Rexahn owns issued patents in multiple 
foreign  countries related  for  RX-1792,  RX-3117,  Archexin,  RX-0047  and  RX-5902.   Additional  US 
and/or foreign patent applications related to RX-3117, RX-8243, RX-5902, RX-21101 and RX-21202 are 
pending. There  are  also  issued  patents  and  pending  applications  in  US  and  foreign  countries  related  to 
Zoraxel and Serdaxin.   

12 

 
 
 
 
 In  February 2005,  we 

from  Revaax 
Pharmaceuticals,  LLC.  The  intellectual  property  rights  acquired  cover  use  of  certain  compounds  for 
anxiety, depression, aggression, cognition, Attention Deficit Hyperactivity Disorder, neuroprotection and 
sexual  dysfunction.  See  "Collaboration  and  License  Arrangements"  in  this  Item  for  additional 
information. 

licensed-in  CNS-related 

intellectual  property 

Rexahn  is  the  exclusive  licensee  of  all  four  US  and  several  foreign  patents  related 
to Serdaxin.  Rexahn is the exclusive licensee of two issued US patents related to Zoraxel.  Rexahn is also 
the  exclusive  licensee  of  additional  pending  US  and/or  foreign  patent  applications  related  to  Zoraxel 
and/or Serdaxin.  See “Collaboration and License Arrangements” in this Item for additional information. 

Collaboration and License Arrangements 

We  have  numerous  collaborative  research  and  development  relationships  with  universities, 

research institutions and other organizations.  A description of these material relationships is below. 

Teva Pharmaceutical Industries (Teva).   

On September 21, 2009, we closed on licensing and stock purchase agreements with Teva for the 
development of our novel anti-cancer compound, RX-3117.  RX-3117 is a small molecule, new chemical 
entity (NCE), nucleoside compound that has an anti-metabolite mechanism of action, and has therapeutic 
potential in a broad range of cancers including colon, lung and pancreatic cancer.  The companies reached 
an  agreement  with  respect  to  the  commercialization  and  development  of  RX-3117,  under  which  Teva 
purchased  3,102,837  shares  of  our  common  stock  for  $3.5  million.  We  will  be  eligible  to  receive 
additional  development,  regulatory  and  sales  milestone  payments.  In  addition,  we  will  be  eligible  to 
receive royalties on net sales worldwide.  On January 19, 2011, we entered into a second amendment to 
this  agreement,  where  Teva  purchased  2,334,515  shares  of  our  common  stock  for  $3.95  million.    This 
second amendment also provided for a possible third investment by Teva, in the amount of $750,000. 

TheraTarget, Inc. (TheraTarget).  

On December 14, 2009, Rexahn and TheraTarget, a developer of innovative polymer therapeutics 
for  the  treatment  of  cancer,  formed  a  joint  research  collaboration  agreement.  Under  the  terms  of  the 
agreement, TheraTarget will synthesize and supply us with polymer-drug conjugate products, which are 
part of our polymer-based nanomedicine portfolio.  

Korea Research Institute of Chemical Technology (KRICT) 

On  July  13,  2009,  we  entered  a  licensing  partnership  with  the  Korea  Research  Institute  of 
Chemical  Technology  (KRICT)  to  develop  a  synthetic  process  for  Quinoxalines  compounds.  These 
compounds  provide  selective  toxicity  towards  hypoxic  cells  –  cells  found  in  solid  tumors  and  that  are 
resistant to anticancer drugs and radiation therapy, making them a potential treatment for solid tumors.  

The University of Maryland Baltimore (UMB)  

On  February  1,  2007,  we  entered  into  a  Maryland  Industrial  Partnership  Agreement  with  the 
UMB  to  collaborate  with  and  sponsor  the  joint  development  of  polymer-drug  conjugates  for  cancer 
therapy,  for  the  targeted  delivery  of  cancer  drugs.  Intellectual  property  made  or  developed  under  this 
agreement is jointly owned by us and UMB.   

13 

 
 
 
Revaax Pharmaceuticals LLC (Revaax) 

On February 10, 2005, we licensed on an exclusive basis, with the right to sublicense, all of the IP 
of Revaax, which includes four patents and multiple patent applications, with respect to certain chemical 
structures  that  have  demonstrated  in  pre-clinical  research  the  potential  to  treat  certain  behavioral 
disorders, such as anxiety, depression and cognitive disorders (the “Licensed Products”).  This agreement 
expires  upon  the  expiration  of  the  royalty  term  for  all  Licensed  Products  in  all  countries,  which  is  no 
earlier than August 2020 and could extend to August 2024.  This agreement provides for an initial license 
fee  and  milestone  payments  based  on the  initiation  of  pivotal  trials for  disease treatment  indication for 
licensed products.   

This agreement provides for an initial license fee and milestone payments based on the initiation 
of pivotal trials for disease treatment indication for licensed products.  Furthermore, we will pay Revaax a 
specified  fee  for  each  Licensed  Product  under  the  agreement  upon  receipt  of  the  first  approval  by  any 
federal, state or local regulatory, department, bureau or other governmental entity necessary prior to the 
commercial  sale  of  the  Licensed  Product  (“Marketing  Approval”).  Notwithstanding  the  milestone 
payment arrangement described above, we are not obligated to make any milestone payment with respect 
to  milestone  events  for  which  we  receive  sublicense  revenues  and  are  obligated  to  pay  Revaax  a 
percentage of such sublicense revenues, as well as royalties for sales of Licensed Products based on net 
sales of the Licensed Products. 

Under  the  agreement  we  agreed  to  pay  Revaax  an  initial  license  fee  of  $375,000,  payable  in  8 
installments of $46,875 each over a period of 2 years from February 10, 2005. In addition, we also agreed 
to pay Revaax a number of one time payments within 30 days of the first achievement of the following 
milestones, (a) $500,000 with respect to the dosing of the first patient in the first Phase III clinical trial or 
other controlled study in humans of the efficacy and safety with regards to any product the manufacture, 
use  or  sale  of  which  is  covered  by  a  any  claim  of  an  issued  and  unexpired  patent  (the  “Pivotal Trial”) 
within the Licensed Products, and $250,000 with respect to the dosing of the first patient, in the second, 
third, fourth and fifth Privotal Trial, and $125,000 with respect to the dosing of the first patient in any 
subsequent  Pivotal  Trial,  (b)  $5,000,000  with  respect  to  the  receipt  of  Marketing  Approval,  and 
$2,500,000  with  respect  to  the  receipt  of  the  second,  third,  fourth  and  fifth  Marketing  Approval  for  a 
Licensed Product, and $1,250,000 with respect to any subsequent Marketing Approval. We are not under 
an  obligation  to  make  any  payments  with  respect  to  milestone  events  for  which  we  receive  any  non-
creditable upfront fees or milestone payments received by us from any sublicense in connection with the 
development  and  commercialization  of  a  Licensed  Product  by  such  sublicense,  less  any  license  fees, 
milestone  payments,  or  royalties  payable  by  us  to  a  third  party  under  any  technology  acquisition 
agreement  in  connection  with  the  development  or  commercialization  of  a  Licensed  Product,  but 
specifically  excluding  any  royalties  revenues  derived  from  any  sublicense  agreements.  Also,  at  our 
option, we may elect to make up to 50% of any milestone payment in shares of our common stock with 
the number of shares determined by dividing the amount of the milestone portion by the fair market value 
of one share of common stock, as reasonably determined by our board of directors.  

We  also  agreed  to  pay  Revaax  royalty  payments  on  all  sales  of  the  Licensed  Product  made  to 
third  parties.  The  royalties  consist  of  (a)  4%  of  the  portion  of  the  aggregate  net  sales  of  the  Licensed 
Product  during  a  calendar  year  that  is  equal  to  or  less  than  $250,000,000,  (b)  5%  of  the  portion  of 
aggregate net sales of the Licensed Product in a calendar year that is greater than $250,000,000 but equal 
to or less than $500,000,000, (c) 6% of the aggregate sales of the Licensed Product during a calendar year 
that is greater than $500,000,000 but equal to or less than $750,000,000, and (d) 7% of the aggregate net 
sales  of  the  Licensed  Product  during  a  calendar  year  exceeds  $750,000,000.  The  royalty  payment 
obligations will expire on the later of (a) expiration of any claim of an issued and unexpired patent within 
the  Licensed  Products  which  has  not  been  held  unenforceable  or  invalid  and  which  has  not  been 

14 

 
disclaimed or admitted to be invalid or unenforceable through reissue or otherwise (the “Valid Claim”) 
that,  for  the  licenses  granted  under  the  Agreement,  would  be  infringed  by  the  sale  of  such  Licensed 
Product, and (b) 10 years after the first commercial sale of the Licensed Product by us, our affiliates or 
sublicenses anywhere in the world.  

Upon expiration of the Valid Claim for a particular Licensed Product in a particular country, each 
of  the  royalty  fees  will  be  reduced  by  50%  for  the  remainder  of  the  term  remaining  on  our  royalty 
payment obligations, resulting in royalty fees of 2%, 2.5%, 3%, and 3.5%, as applicable.   

Rexgene Biotech Co., Ltd. (Rexgene) 

 On  February  6,  2003  we  entered  into  a  Research  Collaboration  Agreement  with  Rexgene  to 
collaborate  in  the  development  of  a  cancer  treatment  therapeutic  compound  denominated  RX-
0201(Archexin).  We  jointly  agreed  to  develop  a  research  and  development  plan  for  the  purpose  of 
registering Archexin for sale and use in the Republic of Korea and other Asian countries. The research 
and  development  plan  would  include  clinical  and  animal  trials  to  be  conducted  in  the  United  States, 
clinical trials would be conducted in Korea and other Asian countries. We agreed to provide as its initial 
contribution  to  the  joint  development  and  research,  a  license  to  all  technology  related  to  Archexin. 
Rexgene agreed to provide, as its initial contribution $1,500,000 to be used by us in further development 
of  Archexin.  Rexgene  agreed  to  pay  us  a  royalty  fee of  3%  of net  sales  of licensed  products  related  to 
Archexin in all countries in Asia by Rexgene or any sublicensee of Rexgene.  

The  agreement  was  scheduled  to  expire  upon  the  last  to  expire  of  all  US  and  foreign  patents 
presently  or  in the future  issued that  cover  Archexin,  or  if  no licensed  patent  is  issued  within  20  years 
from the date of execution of the agreement. A breach of the agreement by either party will afford the 
non-breaching  party  the  right  to  terminate  the  agreement  upon  90  days  written  notice  of  termination 
specifying  the  obligations  breached,  provided  that  within  said  90  days  the  breaching  party  does  not 
remedy the breach.  

Total Research and Development Costs 

 We have incurred research and development costs of $11,992,087, $3,934,701 and $3,176,971 for 
the  years  ended  December  31,  2011,  2010  and  2009  respectively.    Research  and  development  costs 
primarily consist of clinical trials and preclinical development costs, as well as payroll costs for research 
and development personnel.  

Employees 

We  currently  have  15  full-time  employees,  all  of  whom  are  based  either  at  our  Rockville, 
Maryland  office  or  our  Germantown,  Maryland  lab  facility.    Our  employees  are  not  covered  by  any 
collective  bargaining  agreement  and  we  have  never  experienced  a  work  stoppage.    We  believe  our 
relationships with our employees are satisfactory. 

Available Information  

Under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Company is required 
to file annual, quarterly and current reports, proxy statements and other information with the Securities 
and Exchange Commission (the “SEC”). Any document the Company files with the SEC may be read and 
copied at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. Please call 
the SEC at (800) SEC-0330 for further information about the public reference room. The SEC maintains a 

15 

 
 
 
 
website at www.sec.gov that contains reports, proxy and information statements, and other information 
regarding issuers that file electronically with the SEC.  

The Company makes available, free of charge, on its website at www.rexahn.com its Annual Report on 
Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, and all amendments 
thereto, as soon as reasonably practicable after the Company files such reports with, or furnishes them to, 
the SEC. Investors are encouraged to access these reports and the other information about the Company’s 
business on its website. Information found on the Company’s website is not part of this Annual Report on 
Form 10-K. The Company will also provide copies of its Annual Report on Form 10-K, free of charge, 
upon written request of the Investor Relations Department at the Company’s main address, 15245 Shady 
Grove Road, Suite 455, Rockville MD 20850 

Also posted on the Company’s website, and available in print upon written request of any shareholder to 
the Company’s Investor Relations Department, are the charters of the standing committees of its Boar 

Item 1A.  Risk Factors. 

You should carefully consider the risks described below together with the other information included in 
this Form 10-K. Our business, financial condition or results of operations could be adversely affected by 
any of these risks. If any of these risks occur, the value of our common stock could decline. 

We  currently  have  no  product  revenues,  have  incurred  negative  cash  flows  from  operations  since 
inception, and will need to raise additional capital to operate our business. 

To  date,  we  have  generated  no  product  revenues  and  have  incurred  negative  cash  flow  from 
operations.  Until  we  receive  approval  from  the  FDA  and  other  regulatory  authorities  for  our  drug 
candidates, we cannot sell our drugs and will not have product revenues. Therefore, for the foreseeable 
future, we will have to fund all of our operations and capital expenditures from the net proceeds of equity 
or debt offerings we may make, cash on hand, licensing fees and grants.  We will need to raise additional 
money through debt and/or equity offerings in order to continue to develop our drug candidates. If we are 
not  able  to  raise  sufficient  additional  money,  we  will  have  to  reduce  our  research  and  development 
activities.  We  will  first  reduce  research  and  development  activities  associated  with  our  preclinical 
compounds. To the extent necessary, we will then reduce our research and development activities related 
to some or all of our clinical drugs. 

Additionally,  changes  may  occur  that  would  consume  our  existing  capital  at  a  faster  rate  than 
projected, including but not limited to, the progress of our research and development efforts, the cost and 
timing of regulatory approvals and the costs of protecting our intellectual property rights. We may seek 
additional financing to implement and fund other drug candidate development, clinical trial and research 
and development efforts, including Phase I clinical trials for other new drug candidates, as well as other 
research and development projects. 

We will need additional financing to continue to develop our drug candidates, which may not be 
available  on  favorable  terms,  if  at  all.  If  we  are  unable  to  secure  additional  financing  in  the  future  on 
acceptable terms, or at all, we may be unable to complete our planned pre-clinical and clinical trials or 
obtain  approval  of  our  drug  candidates  from  the  FDA  and  other  regulatory  authorities.  In  addition,  we 
may be forced to reduce or discontinue product development or product licensing, reduce or forego sales 
and  marketing  efforts  and  forego  attractive  business  opportunities  in  order  to  improve  our  liquidity  to 
enable us to continue operations. Any additional sources of financing will likely involve the sale of our 
equity securities or securities convertible into our equity securities, which may have a dilutive effect on 
our stockholders. 

16 

 
 
 
 
 
 
 
We are not currently profitable and may never become profitable. 

We  have  generated  no  revenues  to  date  from  product  sales.  Our  accumulated  deficit  as  of 
December  31,  2011  and  2010  was  $57,084,613  and  $45,739,663,  respectively.  For  the  years  ended 
December  31,  2011,  2010  and  2009,  we  had  net  losses  of  $11,344,950,  $14,022,107  and  $2,903,098, 
respectively, partially as a result of expenses incurred through a combination of research and development 
activities related to the various technologies under our control and expenses supporting those activities. 
Even if we succeed in developing and commercializing one or more of our drug candidates, we expect to 
incur  substantial  losses  for  the  foreseeable  future  and  may  never  become  profitable.  We  also  expect  to 
continue  to  incur  significant  operating  and  capital  expenditures  and  anticipate  that  our  expenses  will 
increase substantially in the foreseeable future, based on the following considerations: 

· 

· 

· 

· 

· 

continued pre-clinical development and clinical trials for our current and new drug 
candidates; 

efforts to seek regulatory approvals for our drug candidates; 

implementing additional internal systems and infrastructure; 

licensing in additional technologies to develop; and 

hiring additional personnel. 

We also expect to continue to experience negative cash flow for the foreseeable future as we fund 
our operations and capital expenditures. Until we have the capacity to generate revenues, we are relying 
upon outside funding resources to fund our cash flow requirements. 

We have a limited operating history. 

We  are  a  development-stage  company  with  a  limited  number  of  drug  candidates.  To  date,  we 
have not demonstrated an ability to perform the functions necessary for the successful commercialization 
of any of our drug candidates. The successful commercialization of our drug candidates will require us to 
perform a variety of functions, including, but not limited to: 

· 

· 

· 

· 

conducting pre-clinical and clinical trials; 

participating in regulatory approval processes; 

formulating and manufacturing products; and 

conducting sales and marketing activities. 

To  date,  our  operations  have  been  limited  to  organizing  and  staffing  our  company,  acquiring, 
developing  and  securing  our  proprietary  technology,  drug  candidate  research  and  development  and 
undertaking,  through  third parties,  pre-clinical  trials  and  clinical trials  of  our  principal  drug  candidates. 
These operations provide a limited basis for assessment of our ability to commercialize drug candidates. 

We may  not  obtain  the  necessary  U.S.  or  worldwide  regulatory approvals to  commercialize  our  drug 
candidates, and we cannot guarantee how long it will take for FDA to review applications for our drug 
candidates. 

17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We will need FDA approval to commercialize our drug candidates in the U.S. and approvals from 
the FDA-equivalent regulatory authorities in foreign jurisdictions to commercialize our drug candidates in 
those jurisdictions. In order to obtain FDA approval of our drug candidates, we must submit to the FDA 
an NDA demonstrating that the drug candidate is safe for humans and effective for its intended use. This 
demonstration requires significant research and animal tests, which are referred to as pre-clinical studies, 
as  well  as  human  tests,  which  are  referred  to  as  clinical  trials.  Satisfaction  of  the  FDA’s  regulatory 
requirements typically takes many years, and depends upon the type, complexity and novelty of the drug 
candidate and requires substantial resources for research, development and testing. We cannot guarantee 
that  any  of  our  drug  candidates  will  ultimately  be  approved  by  the  FDA,  if  they  will  ultimately  be 
reviewed  on  an  expedited  or  priority  basis  by  the  FDA,  or  if  an  expedited  or  priority  review  will 
significantly  shorten  actual  FDA  review  time.  We  cannot  predict  whether  our  research  and  clinical 
approaches will result in drugs that the FDA considers safe for humans and effective for indicated uses. 
Two of our drug candidates, Archexin and RX-0047, are antisense oligonucleotide (ASO) compounds. To 
date, although applications have been made by other companies, the FDA has not approved any NDAs for 
any ASO compounds for cancer treatment. In addition, each of Archexin, RX-0201-nano and RX-0047-
nano is of a drug class (Akt inhibitor, in the case of Archexin and RX-0201-nano, and HIF inhibitor, in 
the case of RX-0047) that has not been approved by the FDA to date, nor have we submitted such NDA. 
After the clinical trials are completed, the FDA has substantial discretion in the drug approval process and 
may require us to conduct additional pre-clinical and clinical testing or to perform post-marketing studies. 

In  foreign  jurisdictions,  we  must  receive  approval  from  the  appropriate  regulatory  authorities 
before  we  can  commercialize  our  drugs.  Foreign  regulatory  approval  processes  generally  include  all  of 
the risks associated with the FDA approval procedures described above. We cannot assure you that we 
will  receive  the  approvals  necessary  to  commercialize  our  drug  candidates  for  sale  outside  the  United 
States. 

There is no assurance as to the precise scope of our marketing exclusivity afforded under the Orphan 
Drug Act.   

Even  if  we  have  orphan  drug  designation  for  a  particular  drug  indication,  we  cannot  guarantee 
that another company also holding orphan drug designation will not receive FDA approval for the same 
indication before we do.  If that were to happen, our applications for that indication may not be approved 
until the competing company’s seven-year period of exclusivity expired. Even if we are the first to obtain 
FDA  approval  for  an  orphan  drug  indication,  there  are  certain  circumstances  under  which  a  competing 
product may be approved for the same indication during our seven-year period of marketing exclusivity, 
such as if the later product is shown to be clinically superior to the orphan product.  Further, the seven-
year  marketing  exclusivity  would  not  prevent  other  sponsors  from  obtaining  approval  of  the  same 
compound for other indications or the use of other types of drugs for the same use as the orphan drug. 

Our drug candidates are in the stages of clinical trials. 

Our drug candidates are in the stage of development and require extensive clinical testing, which 
are  very  expensive,  time-consuming  and  difficult  to  design.  Archexin,  our  oncology  drug  candidate,  is 
currently in Phase IIa trials for pancreatic cancer. In November, 2011, we released results that the Phase 
IIb  clinical  study  showed  Serdaxin  did  not  demonstrate  efficacy  compared  to  the  placebo  group  as 
measured by MADRS.   We completed our Phase IIa clinical trial for Zoraxel, and are evaluating how  to 
proceed with the Phase IIb study. 

Clinical trials are very expensive, time-consuming and difficult to design and implement. 

18 

 
 
 
 
 
 
 
 
 
Human clinical trials are very expensive and difficult to design and implement, in part because 
they are subject to rigorous regulatory requirements. The clinical trial process is also time-consuming. We 
estimate  that  clinical  trials  of  our  current  drug  candidates  will  take  up  to  three  years  to  complete. 
Furthermore, failure can occur at any stage of the trials, and we could encounter problems that cause us to 
abandon or repeat clinical trials. The commencement and completion of clinical trials may be delayed by 
several factors, including, but not limited to: 

· 

· 

· 

· 

· 

· 

· 

· 

unforeseen safety issues; 

determination of dosing issues; 

lack of effectiveness during clinical trials; 

change in the standard of care of the indication being studied 

reliance on third party suppliers for the supply of drug candidate samples; 

slower than expected rates of patient recruitment; 

inability to monitor patients adequately during or after treatment; 

inability or unwillingness of medical investigators and institutional review boards to 
follow our clinical protocols; and 

· 

lack of sufficient funding to finance the clinical trials. 

We  or  the  FDA  may  suspend  clinical  trials  at  any  time  if  it  appears  that  we  are  exposing 
participants to unacceptable health risks or if the FDA finds deficiencies in our IND submissions or the 
conduct of these trials. 

Additionally,  we  may  have  difficulty  enrolling  patients  in  our  clinical  trials.  If  we  experience 
such difficulties, we may not be able to complete the clinical trial or we may experience significant delays 
in completing the clinical trial.  

If  the  results  of  our  clinical  trials  fail  to  support  our  drug  candidate  claims,  the  completion  of 
development  of  such  drug  candidate  may  be  significantly  delayed  or  we  may  be  forced  to  abandon 
development altogether, which will significantly impair our ability to generate product revenues. 

Even  if  our  clinical  trials  are  completed  as  planned,  we  cannot  be  certain  that  our  results  will 
support our drug candidate claims. Success in pre-clinical testing and early clinical trials does not ensure 
that later clinical trials will be successful, and we cannot be sure that the results of later clinical trials will 
replicate  the results  of  prior  clinical trials and pre-clinical testing.  The  clinical trial  process  may  fail to 
demonstrate  that  our  drug  candidates  are  safe  for  humans  and  effective  for  indicated  uses.  This  failure 
would cause us to abandon a drug candidate and may delay development of other drug candidates. Any 
delay  in,  or  termination  of,  our  clinical  trials  will  delay  the  filing  of  our  NDAs  with  the  FDA  and, 
ultimately,  delay  our  ability  to  commercialize  our  drug  candidates  and  generate  product  revenues.  In 
addition, our trial designs may involve a small patient population. Because of the small sample size, the 
results  of  early  clinical  trials  may  not  be  indicative  of  future  results.  In  addition,  standard  of  care 
treatments may change which would require additional studies to be done. 

19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The  Phase  IIb  results  of  Serdaxin  may  negatively  impact  our  business,  and  our  ability  to  secure 
financing. 

In  November,  2011,  we  released  the  results  of  our  Serdaxin  Phase  IIb  trial,  which  did  not 
demonstrate Serdaxin’s efficacy compared to the placebo measured by the MADRS scores.  At this point, 
we  have  not  made  any  determinations  of  Serdaxin’s  future  paths  or  allocated  resources  to  the  further 
development of Serdaxin.  These results may lead us to delay development of Serdaxin.    If we are not 
able  to  secure  additional  financing,  we  may  not  be  able  to  implement  and  fund  the  research  and 
development. 

If physicians and patients do not accept and use our drugs, our ability to generate revenue from sales 
of our products will be materially impaired. 

Even if the FDA approves our drug candidates, physicians and patients may not accept and use 

them. Future acceptance and use of our products will depend upon a number of factors including: 

· 

· 

· 

· 

· 

awareness of the drug’s availability and benefits; 

perceptions by members of the health care community, including physicians, about the 
safety and effectiveness of our drugs; 

pharmacological benefit and cost-effectiveness of our product relative to competing 
products; 

availability of reimbursement for our products from government or other healthcare 
payers; 

effectiveness of marketing and distribution efforts by us and our licensees and 
distributors, if any; and 

· 

the price at which we sell our products. 

Because we expect sales of our current drug candidates, if approved, to generate substantially all 
of  our  product  revenues  for  the  foreseeable  future,  the  failure  of  any  of  these  drugs  to  find  market 
acceptance would harm our business and could require us to seek additional financing. 

Much of our drug development program depends upon third-party researchers, and the results of our 
clinical trials and such research activities are, to a limited extent, beyond our control. 

We  depend  upon  independent  investigators  and  collaborators,  such  as  universities  and  medical 
institutions,  to  conduct  our  pre-clinical,  toxicology  studies,  and  clinical  trials.  This  business  practice  is 
typical for the pharmaceutical industry and companies like us. For example, the Phase I clinical trials of 
Archexin were conducted at the Lombardi Comprehensive Cancer Center of Georgetown Medical Center 
and  the  University  of  Alabama  at  Birmingham,  with  the  assistance  of  Amarex,  LLC,  a  pharmaceutical 
clinical research service provider who is responsible for creating the reports that will be submitted to the 
FDA. We also relied on TherImmune Research Corporation (now named Bridge Global Pharmaceutical 
Services, Inc.), a discovery and pre-clinical service provider, to summarize Archexin‘s pre-clinical data. 
While we make every effort internally to oversee their work, these collaborators are not our employees 
and  we  cannot  control  the  amount  or  timing  of  resources  that  they  devote  to  our  programs.  These 
investigators may not assign priority to our programs or pursue them as diligently as we would if we were 
undertaking such programs ourselves. If outside collaborators fail to devote sufficient time and resources 
20 

 
 
 
 
 
 
 
 
 
 
 
to  our  drug-development  programs,  or  if  their  performance  is  substandard,  the  approval  of  our  FDA 
applications, if any, and our introduction of new drugs, if any, may be delayed. The risk of completion or 
delay  of  these  studies  is  not  within  our  direct  control  and  a  program  delay  may  occur  due  to 
circumstances  outside  our control.  A  delay  in  any  of  these  programs  may  not  necessarily  have  a  direct 
impact  on  our  daily  operations.  However,  to  the  extent  that  a  delay  results  in  additional  cost  to  us,  a 
higher  than  expected  expense  may  result.  These  collaborators  may  also  have  relationships  with  other 
commercial entities, some of which may compete with us. If our collaborators assist our competitors at 
our expense, our competitive position would be harmed. 

We rely exclusively on third parties to formulate and manufacture our drug candidates, which expose 
us to a number of risks that may delay development, regulatory approval and commercialization of our 
products or result in higher product costs. 

We have no experience in drug formulation or manufacturing. Internally, we lack the resources 
and  expertise  to  formulate  or  manufacture  our  own  drug  candidates.  Therefore,  we  rely  on  third  party 
expertise  to  support  us  in  this  area.  For  example,  we  have  entered  into  contracts  with  third-party 
manufacturers such as UPM Pharmaceuticals, Inc. to manufacture, supply, store and distribute supplies of 
our drug candidates for our clinical trials. If any of our drug candidates receive FDA approval, we will 
rely  on  these  or  other  third-party  contractors  to  manufacture  our  drugs.  Our  reliance  on  third-party 
manufacturers exposes us to the following potential risks: 

·  We may be unable to identify manufacturers on acceptable terms or at all because the 

number of potential manufacturers is limited and the FDA must approve any replacement 
contractor. This approval would require new testing and compliance inspections. In 
addition, a new manufacturer would have to be educated in, or develop substantially 
equivalent processes for, the production of our products after receipt of FDA approval, if 
any. 

·  Our third-party manufacturers might be unable to formulate and manufacture our drugs in 
the volume and of the quality required to meet our clinical needs and commercial needs. 

·  Our contract manufacturers may not perform as agreed or may not remain in the contract 

manufacturing business for the time required to supply our clinical trials or to 
successfully produce, store and distribute our products. 

·  Drug manufacturers are subject to ongoing periodic unannounced inspection by the FDA, 
the Drug Enforcement Agency (DEA), and corresponding state agencies to ensure strict 
compliance with good manufacturing practice and other government regulations and 
corresponding foreign standards. We do not have control over third-party manufacturers’ 
compliance with these regulations and standards, but we may be ultimately responsible 
for any of their failures. 

· 

If any third-party manufacturer makes improvements in the manufacturing process for 
our products, we may not own, or may have to share, the intellectual property rights of 
formulation patents . 

·  A third party manufacturer may gain knowledge from working with us that could be used 

to supply one of our competitors with a product that competes with ours. 

Each  of  these  risks  could  delay  our  clinical  trials,  drug  approval  and  commercialization  and 

potentially result in higher costs and/or reduced revenues. 

21 

 
 
 
 
 
 
 
 
 
 
Two  of  our  clinical  stage  product  candidates,  Serdaxin  and  Zoraxel,  are  based  on  the  same  active 
ingredient, and if safety concerns arise with the active ingredient, then it may delay or prevent further 
development, regulatory approval or successful commercialization of both product candidates. 

Two  of  our  clinical  stage  product  candidates,  Serdaxin  and  Zoraxel,  contain  the  same  active 
ingredient.  If  safety  concerns  arise  or  any  other  material  adverse  events  occur  involving  the  active 
ingredient,  it  may  result  in  delays,  prevent  the  further  development  or  adversely  impact  our  ability  to 
obtain  necessary  FDA  and  other  regulatory  approvals  and  to  successfully  commercialize  both  of  these 
product  candidates.  Any  such  delay  or  inability  to  further  develop  and  commercialize  one  or  both  of 
Serdaxin and Zoraxel would harm our business and our prospects. 

Serdaxin and Zoraxel may be subject to early generic competition or early off-label use of the active 
ingredient shared by both clinical stage product candidates.   

Two  of  our  clinical  stage  product  candidates,  Serdaxin  and  Zoraxel,  are  based  upon  the  same 
active ingredient that has previously been approved by the FDA for use in combination with antibiotics. 
Because we do not have a patent that claims this active ingredient chemical structure and because we are 
not likely to be able to obtain new chemical entity market exclusivity for this active ingredient, we may 
be rapidly subject to early generic competition or early off-label use of the active ingredient, which may 
adversely impact our ability to successfully commercialize one or both of Serdaxin or Zoraxel and may 
harm our financial condition, results of operations and business. 

We have no experience selling, marketing or distributing products and currently no internal capability 
to do so. 

We currently have no sales, marketing or distribution capabilities. While we intend to have a role 
in  the  commercialization  of  our  products,  we  do  not  anticipate  having  the  resources  in  the  foreseeable 
future  to  develop  global  sales  and  marketing  capabilities  for  all  of  our  proposed  products.  Our  future 
success depends, in part, on our ability to enter into and maintain collaborative relationships with other 
companies having sales, marketing and distribution capabilities, the collaborator’s strategic interest in the 
products  under  development  and  such  collaborator’s  ability  to  successfully  market  and  sell  any  such 
products. To the extent that we decide not to, or are unable to, enter into collaborative arrangements with 
respect to the sales and marketing of our proposed products, significant capital expenditures, management 
resources and time will be required to establish and develop an in-house marketing and sales force with 
technical expertise. We cannot assure you that we will be able to establish or maintain relationships with 
third  party  collaborators  or  develop  in-house  sales  and  distribution  capabilities.  To  the  extent  that  we 
depend  on  third  parties  for  marketing  and  distribution,  any  revenues  we  receive  will  depend  upon  the 
efforts of such third parties, as well as the terms of our agreements with such third parties, which cannot 
be  predicted  at  this  early  stage  of  our  development.  We  cannot  assure  you  that  such  efforts  will  be 
successful. In addition, we cannot assure you that we will be able to market and sell our products in the 
United States or overseas. 

Developments by competitors may render our products or technologies obsolete or non-competitive. 

We will compete against fully integrated pharmaceutical companies and smaller companies that 
are  collaborating  with  larger  pharmaceutical  companies,  such  as  Keryx  Biopharmaceuticals,  Genta 
Incorporated  and  Imclone  Systems  Incorporated, as well as  academic institutions,  government  agencies 
and other public and private research organizations. In addition, many of these competitors, either alone 
or together with their collaborative partners, operate larger research and development programs or have 
substantially greater financial resources than we do, as well as more experience in: 

22 

 
 
 
 
 
 
 
 
 
· 

· 

· 

· 

· 

developing drugs; 

undertaking pre-clinical testing and human clinical trials; 

obtaining FDA and other regulatory approvals of drugs; 

formulating and manufacturing drugs; and 

launching, marketing and selling drugs. 

Large  pharmaceutical  companies  such  as  Bristol-Myers  Squibb,  Eli-Lilly,  Novartis,  Pfizer  and 
Glaxo-SmithKline  currently  sell  both  generic  and  proprietary  compounds  for  the  treatment  of  cancer, 
depression and erectile dysfunction. In addition, companies pursuing different but related fields represent 
substantial competition. Many of these organizations have substantially greater capital resources, larger 
research  and  development  staff  and  facilities,  longer  drug  development  history  in  obtaining  regulatory 
approvals  and  greater  manufacturing  and  marketing  capabilities  than  we  do.  These  organizations  also 
compete  with  us  to  attract  qualified  personnel,  parties  for  acquisitions,  joint  ventures  or  other 
collaborations. 

If we fail to adequately protect or enforce our intellectual property rights or secure rights to patents of 
others, the value of our intellectual property rights would diminish and our business and competitive 
position would suffer.   

Our success, competitive position and future revenues will depend in part on our ability and the 
abilities of our licensors to obtain and maintain patent protection for our products, methods, processes and 
other  technologies,  to  preserve  our  trade  secrets,  to  prevent  third  parties  from  infringing  on  our 
proprietary  rights  and  to  operate  without  infringing  the  proprietary  rights  of  third  parties.  We  have  an 
active patent protection program that includes filing patent applications on new compounds to treat cancer 
and  other  conditions,  formulations,  delivery  systems,  and  methods  of  making  and  using  products,  and 
prosecuting  these  patent  applications  in  the  United  States  and  abroad.  As  patents  issue,  we  also  file 
continuation applications for some of them. Through these actions, we are building a patent portfolio of 
patents assigned to and licensed to the Company. Further, Rexahn is developing proprietary research and 
platforms to strengthen and expand our innovative pipelines. However, we cannot predict: 

· 

the degree and range of protection any patents will afford us against competitors, 
including whether third parties find ways to invalidate or otherwise circumvent our 
licensed patents; 

· 

if and when patents will issue in the United States or any other country; 

·  whether or not others will obtain patents claiming aspects similar to those covered by our 

licensed patents and patent applications; 

·  whether we will need to initiate litigation or administrative proceedings which may be 

costly whether we win or lose; 

·  whether our patents will be challenged by our competitors alleging that a patent is invalid 

or unenforceable and, if opposed or litigated, the outcome of any administrative or court 
action as to patent validity, enforceability, or scope; 

23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
·  whether a competitor will develop a similar compound that is outside the scope of 

protection afforded by a patent or whether the patent scope is inherent in the claims 
modified due to interpretation of claim scope by a court; 

·  whether there were activities previously undertaken by a licensor that could limit the 

scope, validity, or enforceability of licensed patents and intellectual property; 

·  whether there will be challenges or litigation brought by a licensor alleging breach of a 
license agreement and its effect on our ability to practice particular technologies and the 
outcome of any such challenge or litigation; or 

·  whether a competitor will assert infringement of its patents or intellectual property, 

whether or not meritorious, and what the outcome of any related litigation or challenge 
may be. 

Our  success  also  depends  upon  the  skills,  knowledge  and  experience  of  our  scientific  and 
technical personnel, our consultants and advisors as well as our licensors and contractors. To help protect 
our  proprietary  know-how  and  our  inventions  for  which  patents  may  be  unobtainable  or  difficult  to 
obtain,  we  rely  on  trade  secret  protection  and  confidentiality  agreements.  To  this  end,  we  require  all 
employees  to  enter  into  agreements  that  prohibit  the  disclosure  of  confidential  information  and,  where 
applicable, require disclosure and assignment to us of the ideas, developments, discoveries and inventions 
important to our business. These agreements may not provide adequate protection for our trade secrets, 
know-how  or  other  proprietary  information  in  the  event  of  any  unauthorized  use  or  disclosure  or  the 
lawful  development  by  others  of  such  information.  If  any  of  our  trade  secrets,  know-how  or  other 
proprietary information is disclosed, the value of our trade secrets, know-how and other proprietary rights 
would be significantly impaired and our business and competitive position would suffer. 

If we infringe the rights of third parties we could be prevented from selling products and be forced to 
pay damages and defend against litigation. 

If our products, methods, processes and other technologies infringe the proprietary rights of other 

parties, we could incur substantial costs and may have to:   

· 

· 

· 

· 

· 

obtain licenses, which may not be available on commercially reasonable terms, if at all; 

redesign our products or processes to avoid infringement; 

stop using the subject matter claimed in the patents held by others, which could cause us 
to lose the use of one or more of our drug candidates; 

pay damages; or 

defend litigation or administrative proceedings which may be costly whether we win or 
lose, and which could result in a substantial diversion of our management resources. 

Although to date, we have not received any claims of infringement by any third parties, as our 
drug candidates move into clinical trials and commercialization, our public profile and that of our drug 
candidates may be raised and generate such claims. 

Our license agreement with Revaax may be terminated in the event we commit a material breach, the 
result of which would significantly harm our business prospects. 

24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our license agreement with Revaax is subject to termination by Revaax if we materially breach 
our obligations under the agreement, including breaches with respect to certain installment payments and 
royalty payments, if such breaches are not cured within a 60-day period. The agreement also provides that 
it  may  be  terminated  if  we  become  involved  in  a  bankruptcy,  insolvency  or  similar  proceeding.  If  this 
license agreement is terminated, we will lose all of our rights to develop and commercialize the licensed 
compounds,  including  Serdaxin  and  Zoraxel,  which  would  significantly  harm  our  business  and  future 
prospects. 

If we are unable to successfully manage our growth, our business may be harmed. 

In addition to our own internally developed drug candidates, we proactively seek opportunities to 
license-in  the  compounds  in  oncology  and  other  therapeutic  areas  that  are  strategic  and  have  value 
creating potential to take advantage of our development know-how. We are actively pursuing additional 
drug candidates to acquire for development. Such additional drug candidates could significantly increase 
our capital requirements and place further strain on the time of our existing personnel, which may delay 
or otherwise adversely affect the development of our existing drug candidates. Alternatively, we may be 
required to hire more employees, further increasing the size of our organization and related expenses. If 
we  are  unable  to  manage  our  growth  effectively,  we  may  not  efficiently  use  our  resources,  which  may 
delay the development of our drug candidates and negatively impact our business, results of operations 
and financial condition. 

We  may  not  be  able  to  attract  and  retain  qualified  personnel  necessary  for  the  development  and 
commercialization  of  our  drug  candidates.  Our  success  may  be  negatively  impacted  if  key  personnel 
leave. 

Attracting and retaining qualified personnel will be critical to our future success. We compete for 
qualified  individuals  with  numerous  biopharmaceutical  companies,  universities  and  other  research 
institutions.  Competition  for  such  individuals  is  intense,  and  we  cannot  assure  you  that  we  will  be 
successful. 

The  loss  of  the  technical  knowledge  and  management  and industry  expertise  of any  of  our  key 
personnel, especially Dr. Chang H. Ahn, our Chairman, Chief Executive Officer, Chief Science Officer 
and  regulatory  expert,  could  result  in  delays  in  product  development  and  diversion  of  management 
resources,  which  could  adversely  affect  our  operating  results.  Dr.  Ahn  plans  to  step  down  as  Chief 
Executive  Officer,  but  will  remain  with  the  Company  as  our  Chief  Science  Officer.  We  are  currently 
searching for a new CEO.  We do not have “key person” life insurance policies for any of our officers. 

We may incur substantial liabilities and may be required to limit commercialization of our products in 
response to product liability lawsuits.   

The testing and marketing of medical products entail an inherent risk of product liability. If we 
cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities 
or  be  required  to  limit  commercialization  of  our  products.  Our  inability  to  obtain  sufficient  product 
liability insurance at an acceptable cost to protect against potential product liability claims could prevent 
or  inhibit  the  commercialization  of  pharmaceutical  products  we  develop,  alone  or  with  collaborators. 
Although  we  currently  carry  clinical  trial  insurance  and  product  liability  insurance  we,  or  any 
collaborators,  may  not  be able  to  maintain  such insurance  at a reasonable  cost.  Even  if  our  agreements 
with any future collaborators entitles us to indemnification against losses, such indemnification may not 
be available or adequate should any claim arise. 

25 

 
 
 
 
 
 
 
 
 
 
An investment in shares of our common stock is very speculative and involves a very high degree of 
risk. 

To  date,  we  have  generated  no  revenues  from  product  sales  and  only  minimal  revenues  from 
interest on bank account balances and short-term investments. Our accumulated deficit as of December 
31,  2011  and  2010  was $57,084,613 and  $45,739,663,  respectively.  For  the  years  ended  December  31, 
2011,  2010  and  2009,  we  had  net  losses  of  $11,344,950,  $14,022,107  and  $2,903,098,  respectively, 
partially  as  a result  of  expenses  incurred  through  a  combination  of  research and  development  activities 
related to the various technologies under our control and expenses supporting those activities. Until we 
receive approval from the FDA and other regulatory authorities for our drug candidates, we cannot sell 
our drugs and will not have product revenues. 

The market price of our common stock may fluctuate significantly. 

The market price of our common stock may fluctuate significantly in response to factors, some of 

which are beyond our control, such as: 

· 

· 

· 

· 

· 

· 

the announcement of new products or product enhancements by us or our competitors; 

changes in our relationships with our licensors or other strategic partners; 

developments concerning intellectual property rights and regulatory approvals; 

variations in our and our competitors’ results of operations; 

changes in earnings estimates or recommendations by securities analysts; and 

developments in the biotechnology industry. 

Further, the stock market, in general, and the market for biotechnology companies, in particular, 
have  experienced extreme  price  and  volume  fluctuations.  Continued  market  fluctuations  could  result  in 
extreme  volatility  in  the  price  of  our  common  stock,  which  could  cause  a  decline  in  the  value  of  our 
common stock. You should also be aware that price volatility might be worse if the trading volume of our 
common  stock  is  low.  We  have  not  declared  or  paid,  and  do  not  expect  to  declare  or  pay,  any  cash 
dividends on our common stock because we anticipate that any earnings generated from future operations 
will be used to finance our operations and as a result, you will not realize any income from an investment 
in our common stock until and unless you sell your shares at a profit. 

Some or all of the “restricted” shares of our common stock issued in the merger of CPRD and 
Rexahn, Corp or held by other stockholders may be offered from time to time in the open market pursuant 
to Rule 144, and these sales may have a depressive effect on the market for our common stock. In general, 
an affiliated person who has held restricted shares for a period of six months may, upon filing with the 
SEC a notification on Form 144, sell into the market common stock in an amount equal to 1 percent of the 
outstanding shares (approximately 700,000 shares) during a three-month period. Non-affiliates may sell 
restricted securities after six months without any limits on volume. 

Our common stock is currently listed on the NYSE AMEX under the trading symbol “RNN”. However, 
because our common stock may be a “penny stock,” it may be more difficult for you to sell shares of 
our common stock, and the market price of our common stock may be adversely affected. 

Our common stock may be a “penny stock” if, among other things, the stock price is below $5.00 

26 

 
 
 
 
 
 
 
 
 
 
 
 
 
   
per  share,  we are not listed  on  a  national  securities exchange  or approved  for quotation  on  the  Nasdaq 
Stock  Market,  or  we  have  not  met  certain  net  tangible  asset  or  average  revenue  requirements.  Broker-
dealers who sell penny stocks must provide purchasers of these stocks with a standardized risk-disclosure 
document prepared by the SEC. This document provides information about penny stocks and the nature 
and level of risks involved in investing in the penny-stock market. A broker must also give a purchaser, 
orally  or  in  writing,  bid  and  offer  quotations  and  information  regarding  broker  and  salesperson 
compensation,  make  a  written  determination  that  transactions  in  penny  stock  are  suitable  for  the 
purchaser, and obtain the purchaser’s written agreement to the purchase. Broker-dealers must also provide 
customers that hold penny stock in their accounts with such broker-dealer a periodic statement containing 
price and market information relating to the penny stock. If a penny stock is sold in violation of the penny 
stock rules, purchasers may be able to cancel their purchase and get their money back. If applicable, the 
penny stock rules may make it difficult for investors to sell their shares of our stock. Because of the rules 
and restrictions applicable to a penny stock, there is less trading in penny stocks and the market price of 
our  common  stock  may  be  adversely  affected.  Also,  many  brokers  choose  not  to  participate  in  penny 
stock transactions. Accordingly, purchasers may not always be able to resell shares of our common stock 
publicly at times and prices that they feel are appropriate. 

We may require additional capital funding the receipt of which may impair the value of our common 
stock. 

If we expand more rapidly than currently anticipated or if our working capital needs exceed our 
current expectations, we may need to raise additional capital through public or private equity offerings or 
debt  financings.  Our  future  capital  requirements  depend  on  many  factors  including  our  research, 
development,  sales  and  marketing  activities.  We  do  not  know  whether  additional  financing  will  be 
available when needed, or will be available on terms favorable to us. If we cannot raise needed funds on 
acceptable  terms,  we  may  not  be  able  to  develop  or  enhance  our  products,  take  advantage  of  future 
opportunities or respond to competitive pressures or unanticipated requirements. To the extent we raise 
additional  capital  by  issuing  equity  securities,  our  stockholders  may  experience substantial dilution  and 
the  new  equity  securities  may  have  greater  rights,  preferences  or  privileges  than  our  existing  common 
stock. 

We have not paid dividends to our stockholders in the past, and we do not anticipate paying dividends 
to our stockholders in the foreseeable future. 

We have not declared or paid cash dividends on our common stock. We currently intend to retain 
all future earnings, if any, to fund the operation of our business, and therefore we do not anticipate paying 
dividends on our common stock in the foreseeable future. 

Item 1B.  Unresolved Staff Comments. 

None 

Item 2.  Description of Property. 

We lease approximately 5,466 square feet of office space at 15245 Shady Grove Road, Rockville, 
Maryland 20850.  We also lease approximately 1,100 square feet of laboratory space at 20271 Goldenrod 
Lane  2086,  #2088,  Germantown,  MD  20876.   The  facility  is  equipped  with  the  requisite  laboratory 
services required to conduct our business and we believe that our existing facilities are adequate to meet 
our needs for the foreseeable future.  The office lease, which commenced on June 29, 2009, is for a five 
27 

 
 
 
 
 
 
 
 
 
 
 
year  term.   The  laboratory  lease,  which  commenced  on  July  1,  2009,  is  for  one  year  term  and  was 
renewed  for  additional  years  commencing  July  1,  2010  and  July  1,  2011.   We  do  not  own  any  real 
property.  

Item 3.  Legal Proceedings. 

None 

Item 4. Mine Safety Disclosures 

Not Applicable 

28 

 
 
 
 
 
 
 
PART II 

Item 5.  Market for Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities. 

As of March 15, 2012, we are authorized to issue two classes of capital stock, which are common 
stock  and  preferred  stock.    Our  total  authorized  shares  of  common  stock  and  preferred  stock  are 
500,000,000  shares,  par  value  $0.0001 per  share,  and  100,000,000  shares,  par  value  $0.0001, 
respectively.    As  of  March  15,  2012,  we  have  95,345,656  shares  of  common  stock  outstanding  and 
approximately  8000 stockholders  of  record  of  common  stock.    As  of  March  15,  2012,  no  shares  of 
preferred stock are outstanding. 

Our  common  stock  is  traded  on  the  NYSE  AMEX,  formerly  known  as  the  American  Stock 
Exchange, under the ticker symbol “RNN.”  From May 16, 2005 to May 23, 2008 our common stock was 
traded on the Over the Counter Bulletin Board (the OTC-BB) under the ticker symbol “RXHN.”  From 
November  2004  until  May 13,  2005,  our  common  stock  was  traded  on  the  OTC-BB  under  the  ticker 
symbol “CPRD.”   

The  following  table  sets  forth  the  high  and  low  sales  prices  of  our  common  shares  as  reported 

during the periods indicated.   

Period 

2010 

First Quarter 
Second Quarter  
Third Quarter 
Fourth Quarter 

2011 

First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

Dividends 

High 

Low 

1.65 
3.65 
1.49 
1.24 

1.84 
1.39 
1.27 
1.16 

0.66 
1.12 
1.13 
0.98 

1.07 
1.15 
0.91 
0.35 

We  have  not  paid  any  cash  dividends  on  common  stock  and  do  not  expect  to  do  so  in  the 
foreseeable  future.    We  anticipate  that  any  earnings  generated  from  future  operations  will  be  used  to 
finance our operations.  No restrictions exist upon our ability to pay dividends. 

Purchase of Equity Securities by the Issuer and Affiliated Purchasers 

There were no repurchases of equity securities in 2011. 

Sale of Unregistered Equity Securities 

On  January  19,  2011,  the  Company  completed  a  sale  of  2,334,515  shares  of  the  Company’s 
common  stock  to  Teva  for  an  aggregate  purchase  price  of  $3,950,000.    This  investment  by  Teva  was 
made  pursuant  to  the  securities  purchase  agreement,  as  amended  by  the  Second  Amendment,  whereby 
29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Teva had the option to make an additional investment in the Company’s common stock for the purpose of 
supporting the research and development program for the pre-clinical stage, anti-cancer compound RX-
3117.  This per share price of the Company’s common stock purchased by Teva was determined pursuant 
to the securities purchase agreement, as amended by the Second Amendment, which provided for a per 
share price of 120% above the closing price on January 5, 2011.  The securities were issued pursuant to 
the exemption from the registration requirements of the Securities Act of 1933, as amended, afforded by 
Section 4(2) thereof, as a transaction to an accredited investor not involving a public offering.  

Pursuant  to  a  consulting  agreement,  dated  as  of  February  12,  2010,  by  and  between  JFS 
Investments and the Company, the Company issued an aggregate of 1,020,000 shares of common stock to 
JFS Investments.  The shares of common stock were issued in consideration for investor relation services 
provided  by  JFS  Investments.  The  shares  of  common  stock  were  not  registered  under  the  Securities 
Exchange  Act  of  1933,  as  amended  (the  “Securities  Act”)  pursuant  to  the  exemptions  from  the 
registration requirements provided by Section 4(2) of the Securities Act.  The Company delivered a notice 
to JFS Investments terminating the consulting agreement on November 12, 2010. 

Pursuant to a consulting agreement, dated as of February 12, 2010, by and between Garden State 
Securities, Inc. and the Company, the Company issued an aggregate of 680,000 shares of common stock 
to Garden State Securities,  Inc.  The shares of common stock were issued in consideration for investor 
relation  services  provided  by  Garden  State  Securities  Inc.  The  shares  of  common  stock  were  not 
registered under the Securities Exchange Act of 1933, as amended (the “Securities Act”) pursuant to the 
exemptions  from  the  registration  requirements  provided  by  Section  4(2)  of  the  Securities  Act.    The 
Company  delivered  a  notice  Garden  State  Securities,  Inc.  terminating  the  consulting  agreement  on 
November 12, 2010. 

On  September  21,  2009,  the  Company  completed  a  sale  of  3,102,837  shares  of  our  common 
stock, par value $0.0001 per share, to Teva, for an aggregate purchase price of $3,500,000.  The securities 
were issued pursuant to the exemption from registration afforded by Section 4(2) of the Securities Act of 
1933.    The  purchaser  is  an  accredited  investor  and  represented  that  it  was  acquiring  the  securities  for 
investment only and not with a view for the sale or distribution of the securities. 

Equity Compensation Plan Information 

The following table provides information, as of December 31, 2011, about shares of our common 
stock  that  may  be  issued  upon  the  exercise  of  options,  warrants  and  rights  granted  to  employees, 
consultants or directors under all of our existing equity compensation plans. 

Number of 
securities to be 
issued upon 
exercise of 
outstanding 
options, warrants  
and rights 

Weighted average 
exercise price of 
outstanding 
options, warrants 
and rights 

Number of 
securities remaining 
available for future 
issuance under 
equity compensation 
plans 

Equity compensation plans 
approved by stockholders 
Equity compensation plans 
not approved by 
stockholders 

Total 

7,646,795 

– 
7,646,795 

$1.05 

– 
$1.05 

30 

8,673,000 

– 
8,673,000 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Performance Graph 

The following graph compares the cumulative total stockholder return on $100 of our common 
stock  for  the  period  beginning  January  1,  2007  through  December  31,  2011,  with  the  cumulative  total 
return over such period for an identical investment on i) the American Stock Exchange Composite Index 
and ii) the American Stock Exchange Biotechnology Index 

31 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 6.  Selected Financial Data. 

Statement of Operations Data: 
    Revenue 
    Operating Expenses 
    Net Loss 
    Basic and Diluted Loss per Share 

Weighted Average shares 
outstanding, basic and diluted 

Balance Sheet Data: 
    Cash, Cash Equivalents,  

Restricted Cash and 
Marketable Securities 

    Total Assets 
    Current Liabilities 
    Accumulated Deficit 
    Total Stockholders’ Equity  

(Deficit) 

    Common shares outstanding 

2011 

$                 - 
  16,131,013 
(11,344,950) 
$          (0.12) 

For the Year Ended December 31,  
2008 
2010 

2009 

2007 

$                 -  $                 -  $                 -  $                 - 
  4,432,149 
 10,305,909 
(14,022,107) 
(4,442,331) 
$          (0.18)  $         (0.05)  $         (0.07)  $         (0.09) 

  6,465,898 
(2,903,098) 

  5,152,315 
(3,681,801) 

93,048,490 

78,662,495 

61,411,442 

55,856,991 

50,332,642 

2011 

2010 

2009 

2008 

2007 

As of December 31, 

$  13,243,253 
$  13,689,648 
    1,185,405 
(57,084,613) 

$  15,193,752 
$  16,216,184 
    1,820,900 
(45,739,663) 

$  9,499,092 
$  9,989,005 
     785,904 
(31,717,556) 

$  3,368,880 
$  4,113,989 
     358,894 
(28,814,458) 

$  7,359,571 
$  8,483,670 
     606,832 
(24,132,657) 

$  10,706,130 
95,345,656 

$  10,395,457 
84,160,849 

$  4,902,411  $(2,602,689) 
56,025,649 

71,938,701 

$  958,193 
55,292,791 

Net  Loss,  Basic  and  Diluted  Loss  per  share,  Accumulated  Deficit,  and  Total  Stockholders’  Equity 
(Deficit) as of and for the years ended December 31, 2008 and 2007 have been restated as discussed in 
Footnote 2 of Item 8 of this Form 10-K. 

32 

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

You  should  read the following  discussion  and  analysis  of  our  results  of  operations, financial  condition 
and liquidity in conjunction with our financial statements and the related notes, which are included in this 
Annual Report on Form 10-K.  Some of the information contained in this discussion and analysis or set 
forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and 
strategies  for  our  business,  statements  regarding  the  industry  outlook,  our  expectations  regarding  the 
future  performance  of  our  business,  and  the  other  non-historical  statements  contained  herein  are 
forward-looking statements.  See “Cautionary Statement Regarding Forward-Looking Statements.”  You 
should also review the “Risk Factors” section under this Item 1A of this Annual Report for a discussion 
of important factors that could cause actual results to differ materially from the results described herein 
or implied by such forward-looking statements. 

Overview 

Our  company  resulted  from  the  merger  of  Corporate  Road  Show.Com  Inc.,  a  New  York 
corporation  incorporated  in  November 1999,  (“CPRD”)  and  Rexahn,  Corp,  a  Maryland  corporation, 
immediately after giving effect to our reincorporation as a Delaware corporation under the name “Rexahn 
Pharmaceuticals,  Inc.”    In  connection  with that  transaction,  a  wholly  owned  subsidiary  of  ours  merged 
with  and  into  Rexahn,  Corp,  with  Rexahn,  Corp  remaining  as  the  surviving  corporation  and  a  wholly 
owned  subsidiary  of  ours.    In  exchange  for  their  shares  of  capital  stock  in  Rexahn,  Corp,  the  former 
stockholders of Rexahn, Corp received shares of common stock representing approximately 91.8% of the 
Company’s outstanding equity after giving effect to the transaction.  Further, upon the effective time of 
the  Merger,  our  historic  business  was  abandoned  and  the  business  plan  of  Rexahn,  Corp  was  adopted.  
The transaction was therefore accounted for as a reverse acquisition with Rexahn, Corp as the accounting 
acquiring party and CPRD as the acquired party.  In September 2005, Rexahn, Corp was merged with and 
into the Company. 

Our  efforts  and  resources  have  been  focused  primarily  on  acquiring  and  developing  our 
pharmaceutical  technologies,  raising  capital  and  recruiting  personnel.    We  are  a  development  stage 
company  and  have  no  product sales to  date  and  we will  not  receive  any  product  sales  until  we receive 
approval  from  the  FDA  or  equivalent  foreign  regulatory  bodies  to  begin  selling  our  pharmaceutical 
candidates.  Our major sources of working capital have been proceeds from  various private financings, 
primarily  private  sales  of  common  stock  and  debt  securities,  and  collaboration  agreements  with  our 
strategic investors. 

Critical Accounting Policies 

A  “critical  accounting  policy”  is  one  which  is  both  important  to  the  portrayal  of  our  financial 
condition  and  results  and  requires  our  management’s  most  difficult,  subjective  or  complex  judgments, 
often as a result of the need to make estimates about the effect of matters that are inherently uncertain.  
Our accounting policies are in accordance with United States generally accepted accounting principles, or 
GAAP,  and  their  basis  of  application  is  consistent  with  that  of  the  previous  year.    Our  significant 
estimates  include  assumptions  made  in  estimating  the  fair  values  of  stock-based  compensation  and  our 
assessment relating to the impairment of intangible assets and deferred revenues.   

Research and Development 

Research and development costs are expensed as incurred.  Research and development expenses 
consist  primarily  of  third  party  service  costs  under  research  and  development  agreements,  salaries  and 

33 

 
 
 
 
 
 
 
 
related  personnel  costs,  as  well  as  stock  compensation  related  to  these  costs,  costs  to  acquire 
pharmaceutical  products  and  product  rights  for  development  and  amounts  paid  to  contract  research 
organizations, hospitals and laboratories for the provision of services and materials for drug development 
and clinical trials. 

Costs incurred in obtaining the license rights to technology in the research and development stage 
that have no alternative future uses and are for unapproved product compounds are expensed as incurred. 

Fair Value of Financial Instruments 

The  carrying  amounts  reported  in  the  accompanying  financial  statements  for  cash  and  cash 
equivalents,  prepaid  expenses  and  other  current  assets  and  accounts  payable  and  accrued  expenses 
approximate fair value because of the short-term maturity of these financial instruments.  The fair value 
methodology for our warrant liabilities and put feature on common stock is described in detail in Item 8 
of this Form 10-K. 

Income Taxes 

The  Company  accounts  for  income  taxes  in  accordance  with  ASC  740,  “Income  Taxes.”  
Deferred  tax  assets  and  liabilities  are  recorded  for  differences  between  the  financial  statement  and  tax 
basis of the assets and liabilities that will result in taxable or deductible amounts in the future based on 
enacted tax laws and rates.  ASC 740 requires that a valuation allowance be established when it is more 
likely than not that all portions of a deferred tax asset will not be realized.  A review of all positive and 
negative  evidence  needs  to  be  considered,  including  a  company’s  current  and  past  performance,  the 
market  environment  in  which  the  company  operates, length  of carryback  and  carryforward  periods  and 
existing  contracts  that  will  result  in  future  profits.    Income  tax  expense  is  recorded  for  the  amount  of 
income  tax  payable  or  refundable  for  the  period,  increased  or  decreased  by  the  change  in  deferred  tax 
assets and liabilities during the period. 

As a result of the Company’s significant cumulative losses, we determined that it was appropriate 

to establish a valuation allowance for the full amount of our deferred tax assets. 

The  calculation  of  our  tax  liabilities  involves  the  inherent  uncertainty  associated  with  the 
application  of  complex  tax  laws.    We  are  subject  to  examination  by  various  taxing  authorities.    We 
believe that as a result of our losses sustained to date, any examination would result in a reduction of our 
net operating loss carryforward rather than a tax liability.  As such, we have not provided for additional 
taxes estimated under ASC 740.  

Warrant Liabilities 

In  accordance  with  ASC  480,  “Distinguishing  Liabilities  from  Equity,”  we  record  warrant 
liabilities at fair value due to provisions in our warrant agreements, as discussed in Footnote 13 of Item 8 
of this Form 10-K.  We reevaluate the fair value of our warrants at each reporting period, and changes in 
the fair value between reporting periods is recorded as “unrealized gain (loss) on fair value of warrants” 
in the statement of operations.   

Put Feature on Common Stock 

We  extended  anti-dilution  protection  provisions  on  our  common  stock  to  our  investors  in  our 
December 2007 and March 2008 financings, whereby in the event that we sell or issue shares below the 
effective purchase price paid, the investors would thereupon receive additional shares in a ratio outlined 
in  the  Securities  Purchase  Agreement.    In  accordance  with  ASC  Topic  480,  “Distinguishing  Liabilities 
from  Equity”,  this  feature  is  a  written  put  on  our  common  stock,  and  is  classified  as  a  liability  at  fair 

34 

 
 
value.  We reevaluate the fair value at each reporting period, and changes in the fair value are recorded as 
“unrealized gain on put feature on common stock in the statement of operations.   

Stock-Based Compensation 

In accordance with ASC 718, “Stock Compensation” compensation costs related to share-based 
payment transactions, including employee stock options, are to be recognized in the financial statements. 
In addition, the Company adheres to the guidance set forth within Securities and Exchange Commission 
(SEC)  Staff  Accounting  Bulletin  No.  107  (SAB  107),  which  provides  the  Staff’s  views  regarding  the 
interaction  between  ASC  718  and  certain  SEC  rules  and  regulations,  and  provides  interpretations  with 
respect to the valuation of share-based payments for public companies.  

Impairment of Long-Lived Assets 

In accordance with ASC 360, “Property, Plant and Equipment,” long-lived assets to be held and 
used are analyzed for impairment whenever events or changes in circumstances indicate that the related 
carrying amounts may not  be recoverable.  The Company evaluates at each balance sheet date whether 
events  and  circumstances  have  occurred  that  indicate  possible  impairment.    If  there  are  indications  of 
impairment, the Company uses future undiscounted cash flows of the related asset or asset grouping over 
the remaining life in measuring whether the assets are recoverable.  In the event such cash flows are not 
expected  to  be  sufficient  to  recover  the  recorded  asset  values,  the  assets  are  written  down  to  their 
estimated fair value.  Management determined that an impairment of intangible assets occurred in 2009 
and wrote-off the assets remaining carrying value of $286,132.   

Concentration of Credit Risk 

ASC  825,  “Financial  Instruments,”  requires  disclosure  of  any  significant  off-balance  sheet  risk 
and  credit  risk  concentration.    The  Company  does  not  have  significant  off-balance  sheet  risk  or  credit 
concentration.  The Company maintains cash and short-term investments with major financial institutions.  
From  time  to  time  the  Company  has  funds  on  deposit  with  commercial  banks  that  exceed  federally 
insured limits.  The balances are insured by the Federal Deposit Insurance Corporation up to $250,000. At 
December  31,  2011,  the  Company’s  uninsured  cash  balances  was  $10,543,447.  Management  does  not 
consider this to be a significant credit risk as the banks are large, established financial institutions. 

Recent Accounting Pronouncements Affecting the Company 

Fair Value Measurements 

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards 
Update  2011-04  to  Accounting  Standards  Codification  (“ASC”)  820,  “Fair  Value  Measurements  and 
Disclosures” (“ASC 820”) which amends the disclosure requirements for fair value instruments.  The new 
disclosures required include disclosure regarding the sensitivity of the fair value measurement to changes 
in  unobservable  inputs,  and  the  interrelationships  between  those  unobservable  inputs.    The  guidance  is 
effective for the Company for fiscal years and interim periods beginning on or after December 15, 2011.  
We believe that the adoption of this guidance will not have a material impact on our financial statements. 

Comprehensive Income 

In  June  2011,  the  FASB  issued  authoritative  guidance  for  presentation  and  disclosure  of 
comprehensive income in the financial statements.  Under the new guidance, a company may no longer 
present  the  components  of  other  comprehensive  income  as  part  of  the  statement  of  changes  in  the 
Statement  of  Stockholder’s  Equity,  and  instead  must present  the components  of  comprehensive income 
35 

 
 
 
 
 
either in the Statement of Operations or in a separate statement immediately following the Statement of 
Operations.    In  addition,  reclassification  adjustments  between  comprehensive  income  and  net  income 
must be disclosed on the financial statements.  This guidance is effective for the Company for fiscal years 
and  interim  periods  beginning  on  or  after  December  15,  2011.        We  believe  that  the  adoption  of  this 
guidance will not have a material impact on our financial statements.  

Results of Operations 

Comparison of the Year Ended December 31, 2011 and the Year Ended December 31, 2010 

Total Revenues 

The Company had no revenues for the years ended December 31, 2011 or December 31, 2010. 

General and Administrative Expenses 

General  and  administrative  expenses  consist  primarily  of  salaries  and  related  expenses  for 
executive, finance and other administrative personnel, recruitment expenses, professional fees and other 
corporate expenses, including business development, investor relations, and general legal activities. 

General and administrative expenses decreased $2,442,795, or 40.8%, to $3,547,829 for the year 
ended  December  31,  2011  from  $5,990,624  for  the  year  ended  December  31,  2010.    The  decrease  is 
primarily  attributed  to  2010  investor  relations  services  provided  by  two  firms,  for  which  we  issued 
compensatory  stock  valued  at  $2,108,000.  The  agreements  with  these  firms  had  been  terminated  in 
November, 2010, therefore, we did not incur these investor relations services in 2011.  

Research and Development Expenses 

Research and development expenses consist primarily of salaries and related personnel costs, fees 
paid to consultants and outside service providers for laboratory development and other expenses relating 
to the design, development, testing, and enhancement of our drug candidates.  We expense our research 
and development costs as they are incurred. 

Research and development expenses increased $8,057,386 or 204.8%, to $11,992,087 for the year 
ended  December  31,  2011,  from  $3,934,701  for  the  year  ended  December  31,  2010.    The  increase  is 
primarily due to the costs associated with the Serdaxin Phase IIb trial, where we incurred approximately 
$7,430,000 for the year ended December 31, 2011.  The increase is also attributable to costs incurred for 
our preclinical compounds, particularly RX-5902, where we incurred approximately $550,000 in 2011. 

Patent Fees 

Our  patent  fees  increased  $216,102,  or  65.5%,  to  $546,027  for  the  year  ended  December  31, 
2011,  from  $329,925  for  the  year  ended  December  31,  2010.    The  increase  was  primarily  due  to  legal 
costs  to  respond  to  additional  patent  applications,  and  translation  fees  associated  with  regionalizing 
patents in additional foreign jurisdictions for the year ended December 31, 2011. 

36 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Depreciation and Amortization 

Depreciation and amortization expense decreased $5,589, or 11.0% to $45,070 for the year ended 
December 31, 2011 from $50,659 for the year ended December 31, 2010.  The decrease is primarily due 
to fully depreciated assets for which we incurred depreciation in 2010 but not in 2011. 

Interest Income 

Interest income decreased $24,028, or 18.0% to $109,240 for the year ended December 31, 2011 
from  $133,268 for the  year  ended  December  31, 2010.    The  decrease is  primarily  due  to  a decrease  in 
interest rates and interest bearing investments for the year ended December 31, 2011 compared to the year 
ended December 31, 2010. 

Other Income 

Other  income  for  the  year  ended  December  31,  2010  was  $56,047,  which  represents  the 
settlement received from  Amarex to resolve a payment dispute as described in Footnote 6 of Item 8 of 
this Form 10-K.  We did not have other income for the year ended December 31, 2011. 

Unrealized Gain/(Loss) on Fair Value of Warrants 

Our warrants are recorded as liabilities at fair value.  Warrants are valued using a lattice model.  
Changes  in  the  fair  value  of  warrants  are  recorded  as  an  unrealized  gain  or  loss  in  our  Statement  of 
Operations.  In fiscal year 2011 and 2010, respectively, we recorded an unrealized gain (loss) on the fair 
value of our warrants of $4,778,450 and $(3,823,146).  The variance in the unrealized gain (loss) between 
the  years  ended  December  31,  2011  and  December  31,  2010  is  primarily  due  to  changes  in  our  stock 
price.    The  change  in  the  fair  value  of  our  warrants  is  a  non-cash  item  reflected  in  our  financial 
statements. 

Unrealized Gain on Fair Value of Put Feature on Common Stock 

We extended anti-dilution protection to our investors in our December 18, 2007 and March 20, 
2008 financings. According to the provisions of the financings, in the event that we issue shares below an 
effective price paid by these investors, the investor would thereupon receive additional shares in a ration 
outlined in the securities purchase agreement. In accordance with ASC 480, the anti-dilution provision is 
a written put recorded as a liability at fair value on our balance sheet.  The provision is valued using a 
lattice model.  Changes in the fair value of the put feature are recorded as an unrealized gain or loss in our 
Statement of Operations.  For the year ended December 31, 2010, we recorded an unrealized gain on the 
fair value of the put feature of $97,713.  Since the anti-dilution provision expired in 2010, there was no 
unrealized gain on the fair value of the put feature on common stock for the year ended December 31, 
2011.  The  change  in  the  fair  value  of  the  put  feature  is  a  non-cash  item  reflected  in  our  financial 
statements. 

Net Loss 

As  a  result  of  the  above,  net  loss  for  the  year  ended  December  31,  2011  was  $11,344,950,  or 
$0.12 per share, compared to a net loss of $14,022,107, or $0.18 per share, for the year ended December 
31, 2010. 

37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Comparison of the Year Ended December 31, 2010 and the Year Ended December 31, 2009 

Total Revenues 

The Company had no revenues for the years ended December 31, 2010 or December 31, 2009. 

General and Administrative Expenses 

General  and  administrative  expenses  consist  primarily  of  salaries  and  related  expenses  for 
executive, finance and other administrative personnel, recruitment expenses, professional fees and other 
corporate expenses, including business development, investor relations, and general legal activities. 

General and administrative expenses increased $3,046,521, or 103.5%, to $5,990,624 for the year 
ended  December  31,  2010  from  $2,944,103  for  the  year  ended  December  31,  2009.    The  increase  is 
primarily attributed to the $2,108,000 value of compensatory stock issued to two firms in exchange for 
investor relations services, as well as increased legal costs and insurance costs.  

Research and Development Expenses 

Research and development expenses consist primarily of salaries and related personnel costs, fees 
paid to consultants and outside service providers for laboratory development and other expenses relating 
to the design, development, testing, and enhancement of our drug candidates.  We expense our research 
and development costs as they are incurred. 

Research  and  development  expenses  increased  $757,730  or  23.3%,  to  $3,934,701  for  the  year 
ended  December  31,  2010,  from  $3,176,971  for  the  year  ended  December  31,  2009.    The  increase  is 
primarily due to the costs associated with the commencement of Serdaxin’s Phase IIB clinical trial in the 
fourth  quarter,  and  the  ongoing  development  of  RX-3117.    Research  and  development  costs  also 
increased due to costs associated with the Phase II clinical trials of Archexin and Zoraxel, as well as pre-
clinical pipeline development.  Research and development expenses were offset by a grant of $822,137 
from  the  federal  government  which  we  were  eligible  for  under  the  Qualified  Therapeutic  Discovery 
Project Program. 

Patent Fees 

Our patent fees increased $26,705, or 8.8%, to $329,925 for the year ended December 31, 2010, 
from $303,220 for the year ended December 31, 2009.  The increase was primarily due to legal costs to 
respond to patent applications for the year ended December 31, 2010. 

Depreciation and Amortization 

Depreciation and amortization expense increased $9,055, or 21.8% to $50,659 for the year ended 
December 31, 2010 from $41,604 for the year ended December 31, 2009.  The increase is primarily due 
to  the  amortization  of  the  leasehold  improvements  to  our  office  space,  which  were  placed  in  service 
midway through 2009, but were in service for the entire year ended December 31, 2010. 

Interest Income 

Interest income increased $65,823, or 97.6% to $133,268 for the year ended December 31, 2010 
from  $67,445  for  the  year  ended  December  31,  2009.    The  increase  is  due  to  a  greater  average  cash 

38 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
balance  due  to  financings  for  the  year  ended  December  31,  2010,  and  higher  interest  rates  on  interest 
bearing investments. 

Other Income 

Other  income  for  the  year  ended  December  31,  2010  was  $56,047,  which  represents  the 
settlement received from  Amarex to resolve a payment dispute as described in Footnote 6 of Item 8 of 
this Form 10-K.  We did not have other income for the year ended December 31, 2009. 

Unrealized (Loss)/Gain on Fair Value of Warrants 

Our warrants are recorded as liabilities at fair value.  Warrants are valued using a lattice model.  
Changes  in  the  fair  value  of  warrants  are  recorded  as  an  unrealized  gain  or  loss  in  our  Statement  of 
Operations.  In fiscal year 2010 and 2009, respectively, we recorded an unrealized (loss) gain on the fair 
value of our warrants of $(3,823,146) and $1,793,101.  The variance in the unrealized (loss) gain between 
the  years  ended  December  31,  2010  and  December  31,  2009  is  primarily  due  to  changes  on  our  stock 
price.    The  change  in  the  fair  value  of  our  warrants  is  a  non-cash  item  reflected  in  our  financial 
statements. 

Unrealized Gain on Fair Value of Put Feature on Common Stock 

We extended anti-dilution protection to our investors in our December 18, 2007 and March 20, 
2008 financings. According to the provisions of our financings, in the event that we issue shares below an 
effective price paid by these investors, the investor would thereupon receive additional shares in a ration 
outlined in the securities purchase agreement. In accordance with ASC 480, the anti-dilution provision is 
a written put recorded as a liability at fair value on our balance sheet.  The provision is valued using a 
lattice model.  Changes in the fair value of the put feature are recorded as an unrealized gain or loss in our 
Statement of Operations.  For the year ended December 31, 2010, we recorded an unrealized gain on the 
fair value of the put feature of $97,713, compared to an unrealized gain of $1,915,719 for the year ended 
December 31, 2009.  The variance in the unrealized gain between the years ended December 31, 2010 and 
2009 results from the put feature expiring in December 18, 2009 and March 20, 2010. The change in the 
fair value of the put feature is a non-cash item reflected in our financial statements. 

Net Loss 

As  a  result  of  the  above,  net  loss  for  the  year  ended  December  31,  2010  was  $14,022,107,  or 
$0.18 per share, compared to a net loss of $2,903,098, or $0.05 per share, for the year ended December 
31, 2009. 

39 

 
 
 
 
 
 
 
 
 
 
Research and Development Projects 

Research  and  development  expenses  are  expensed  as  incurred.  Research  and  development 
expenses  consist  primarily  of  salaries  and  related  personnel  costs,  costs  to  acquire  pharmaceutical 
products  and  product  rights  for  development  and  amounts  paid  to  contract  research  organizations, 
hospitals and laboratories for the provision of services and materials for drug development and clinical 
trials.  Costs incurred in obtaining the license rights to technology in the research and development stage 
and have no alternative future uses are expensed as incurred.  Our research and development programs are 
related  to  our  oncology  clinical  stage  drug  candidate,  Archexin,  our  CNS  candidates  Serdaxin  and 
Zoraxel and pre-clinical stage drug candidates, RX-3117, RX-5902, RX-8243, RX-1792, RX-0047-Nano, 
RX-0201-Nano, and Nano-polymer Anticancer Drugs.  Each of our drug candidates is in various stages of 
completion  as  described  below.  As  we  expand  our  clinical  studies,  we  will  enter  into  additional 
development agreements.  Significant additional expenditures will be required if we complete our clinical 
trials, start new trials, apply for regulatory approvals, continue development of our technologies, expand 
our operations and bring our products to market.  The eventual total cost of each clinical trial is dependent 
on a number of uncertainties such as trial design, the length of the trial, the number of clinical sites and 
the  number  of  patients.  The  process  of  obtaining  and  maintaining  regulatory  approvals  for  new 
therapeutic  products  is  lengthy,  expensive  and  uncertain.  Because  the  successful  development  of  our 
most advanced drug candidates, Archexin, Serdaxin and Zoraxel, is uncertain, and because RX-3117, RX-
5902, RX-8243, RX-1792, RX-0047-Nano, RX-0201-Nano, and Nano-polymer Anticancer Drugs are in 
early-stage development, we are unable to estimate the costs of completing our research and development 
programs,  the  timing  of  bringing  such  programs  to  market  and,  therefore,  when  material  cash  inflows 
could commence from the sale of these drug candidates.  If these projects are not completed as planned, 
our results of operations and financial condition could be negatively affected.  

The  table  below  summarizes  the  amounts  spent  on  each  of  our  research  and  development  projects 
through December 31, 2011: 

2011 

2010 

2009 

  Cumulative from 
March 19, 2001 
(Inception)  
to December 31, 
2011 

 $         230,000    $         240,000  
         7,430,000            1,220,000  
              205,000                 40,000  

 $        800,000   $          6,470,000  
           200,000               9,650,000  
           200,000               1,245,000  

         1,397,500            1,500,000  
            1,190,000               270,000  
 $       10,452,500   $       3,270,000  

           250,000               3,197,500  
           200,000               2,710,000  
 $      1,650,000   $        23,272,500  

Clinical Candidates 
Archexin 
Serdaxin 
Zoraxel 

Preclinical  Candidates 
RX-3117 
Other Preclinical Compounds 

 Archexin®  

Archexin is a 20 nucleotide single stranded DNA anti-sense molecule, which we believe is a first-
in-class inhibitor of the protein kinase Akt.  Akt plays critical roles in cancer cell proliferation, survival, 
angiogenesis,  metastasis,  and  drug  resistance.  Archexin  received  "orphan  drug"  designation  from  the 

40 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Food and Drug Administration, or FDA, for five cancer indications (renal cell carcinoma, or RCC, 
glioblastoma,  ovarian  cancer,  stomach  cancer  and  pancreatic  cancer).  The  FDA  orphan  drug  program 
provides seven years of marketing exclusivity after approval and tax incentives for clinical research. In 
October  2006,  we  announced  the  conclusion  of  the  Phase  I  clinical  trial  of  Archexin,  our  leading 
oncology  drug  candidate.  The  Phase  I  clinical  trial  of  Archexin,  which  took  place  at  Georgetown 
University  and  the  University  of  Alabama,  was  an  open-label,  dose-escalation  study  with  14  day 
continuous infusion in 17 patients with solid tumors. The Phase I trial was intended primarily to assess 
the safety and tolerability of Archexin in patients with advanced cancer. The trial results showed that the 
dose limiting toxicity of Archexin occurring at 315 mg/m2 dose in the form of fatigue. No other serious 
adverse events such as hematological toxicities were observed in this Phase I study. In the Phase I study 
stable disease was observed in two out of the 17 patients. Archexin is currently being studied in a Phase II 
clinical trial for the treatment of pancreatic cancer with enrollment completed in September, 2011, with 
results are currently anticipated in the third quarter of 2012.  The Archexin Phase IIa trial is a single-arm, 
open-label  study  and  is  being  conducted  globally  in  the  United  States  and  India.  Archexin  will  be 
administered  in  combination  with  gemcitabine  in  patients  with  advanced  pancreatic  cancer  to  assess 
safety and preliminary efficacy, maximum tolerated dose, and overall survival.  We own one issued U.S. 
patent for Archexin. 

The costs incurred for the Phase I clinical trial was approximately $1,500,000.  As of December 
31, 2011, we have spent approximately $6,470,000 for the development of Archexin and we estimate that 
the Phase IIa trials for pancreatic cancer patients will be completed in the third quarter of 2012 and will 
require approximately an additional $200,000 to complete. 

Serdaxin® (RX-10100)  

Serdaxin is an extended release formulation of clavulanic acid, which is an ingredient present in 
antibiotics approved by the FDA.  We had been developing Serdaxin for the treatment of depression and 
neurodegenerative  disorders.    From  January  to  September,  2011,  we  conducted  a  randomized,  double-
blind, placebo-controlled study compared two doses of Serdaxin, 0.5 mg and 5 mg, to placebo over an 8-
week  treatment  period  for  major  depressive  disorder  (“MDD”)  patients.    On  November  4,  2011,  we 
released results that the study showed Serdaxin did not demonstrate efficacy compared to a placebo group 
as measured by the Montgomery-Asberg Depression Rating Scale (“MADRS”).  All groups showed an 
approximate  14  point  improvement  in  the  protocol  defined  primary  endpoint  of  MADRS,  and  had  a 
substantial number of patients who demonstrated a meaningful clinical improvement from baseline.  The 
study  showed  that  Serdaxin  was  safe  and  well  tolerated.    At  this  point,  we  have  not  made  any 
determinations of Serdaxin’s future paths and have not allocated resources to the further development of 
Serdaxin for treatment for MDD. 

During  the  year  ended  December  31,  2011,  we  incurred  approximately  $7,430,000  for  costs 
associated with the Phase IIb trial for Serdaxin. Through December 31, 2011, the pre-clinical and clinical 
costs incurred for development of Serdaxin to date have been approximately $9,650,000.  We estimate the 
Phase IIb trial has approximately $400,000 of additional costs that will be paid in of 2012. 

Zoraxel™ (RX-10100)  

Zoraxel is an immediate release formulation of clavulanic acid, the same active ingredient found 
in our product candidate Serdaxin. The Phase IIa proof of concept, completed with positive results, was a 
randomized, double blind, placebo controlled and dose ranging (5 mg, 10 mg, 15 mg) study of 39 erectile 
dysfunction  patients  (ages  of  18  to 65) treated  with Zoraxel. The  Phase  IIb  study  is  designed to  assess 
Zoraxel’s  efficacy  in  approximately  150  male  subjects,  ages  18  to  70,  with  ED.  The  double  blind, 
randomized,  placebo-controlled,  12-week  study  will  include  IIEF  as  the  primary  endpoint  following 

41 

 
treatment  with  Zoraxel  at  25  and  50  mg  doses..    However,  given  the  recently  reported  results  of  the 
Serdaxin Phase IIb clinical trial, we are currently evaluating how to proceed with the Phase IIb study for 
Zoraxel. 

Through  December  31,  2011,  the  costs  incurred  for  development  of  Zoraxel  to  date  have  been 
approximately  $1,245,000.  We  currently  estimate  that  these  Phase  IIb  studies  would  require 
approximately $2,300,000 throughout 2012 and 2013. 

Pre-clinical Pipeline 

On September 21, 2009, we closed on a securities purchase agreement with Teva Pharmaceutical 
Industries Limited (“Teva”), under which Teva purchased 3,102,837 shares of our common stock for $3.5 
million.  Contemporaneous  with  the  execution  and  delivery  of  this  agreement,  the  parties  executed  a 
research  and  exclusive  license  option  agreement  (“RELO”)  pursuant  to  which  we  agreed  to  use 
$2,000,000  from  the  gross  proceeds  of  the  issuance  and  sale  of  shares  to  Teva  to  fund  a  research  and 
development  program  for  the  pre-clinical  development  of  RX-3117.    On  January  19,  2011,  we  entered 
into  a  second  amendment  with  Teva  to  the  securities  purchase    agreement  closed  in  September,  2009.  
Pursuant to the terms of the amendment, TEVA purchased 2,334,515 shares of our common stock in a 
private  offering  for  gross  proceeds  of  $3.95  million.    The  investment  by  TEVA  is  restricted  to  further 
supporting the research and development program for the pre-clinical development of RX-3117.  We will 
be  eligible  to  receive  royalties  on  net  sales  of  RX-3117  worldwide.  This  compound  may  enter  an 
exploratory early stage clinical study during the first quarter of 2012. 

RX-5902 may enter Phase I clinical trials during the first half of 2012.  RX-1792, RX-8243, RX-
0201-Nano,  RX-0047-Nano  and  RX-21101  are  in  a  pre-clinical  stage  of  development.    Through 
December  31,  2011,  the  costs  incurred  for  development  of  these  compounds  to  date  have  been 
approximately  $2,710,000.   The  estimated  cost  to  complete  pre-clinical  toxicology  and  Phase  I  clinical 
trials is estimated to be approximately $1,500,000 per each compound. 

The conduct of the clinical trial and toxicology studies described above are being accomplished in 
conjunction with third-party clinical research organizations at external locations.  This business practice is 
typical for the pharmaceutical industry and companies like us.  As a result, the risk of completion or delay 
of  these  studies  is  not  within  our  direct  control  and  a  program  delay  may  occur  due  to  circumstances 
outside our control.  A delay in any of these programs  may not necessarily have a direct impact on our 
daily operations.  However, a delay could result in additional expenses for us. 

We will need to raise additional money through debt and/or equity offerings in order to continue 
to develop our drug candidates.  If we are not able to raise sufficient additional money, we will have to 
reduce our research and development activities.  We will first reduce research and development activities 
associated with our preclinical compounds.  To the extent necessary, we will then reduce our research and 
development activities related to some or all of our clinical drugs. 

Liquidity and Capital Resources  

Operating Activities 

Cash used in operating activities was $15,530,306 for the year ended December 31, 2011.  The 
operating cash flows during the year ended December 31, 2011 reflect our net loss of $11,344,950 and a 
net decrease of cash components of working capital and non-cash charges totaling $4,185,356.  Cash used 
in operating activities was $6,986,598 and $5,146,845 for the year ended December 31, 2010 and 2009, 
respectively. 

42 

 
 
 
Cash used in investing activities of $545,919 for the year ended December 31, 2011, consisted of 
purchases  of  marketable  securities  and  equipment  of  $8,000,000  and  $16,047,  respectively,  and  an 
increase in restricted cash of $1,029,872, offset by $8,500,000 from proceeds received from the sale of 
marketable  securities.    Cash  used  in  investing  activities  for  the  year  ended  December  31,  2010  was 
$660,339  and  cash  provided  by  investing  activities  for  the  year  ended  December  31,  2009  was 
$1,341,825.  

Cash  provided  by  financing  activities  of  $13,597,474  for  the  year  ended  December  31,  2011 
consisted of net proceeds of $317,961 from the exercise of stock warrants, $59,240 from the exercise of 
stock  options,  $3,926,397  from  the  issuance  of  2,334,515  shares  to  Teva  and  $9,293,876  from  the 
issuance of 8,333,333 shares of common stock to investors.  The investors were also issued warrants to 
purchase 3,333,333 shares of common stock.  Cash provided by financing activities was $12,688,944 and 
$10,733,922 for the years ended December 31, 2010 and 2009, respectively. 

Financings 

We  have  financed  our  operations  since  inception  primarily  through  equity  and convertible  debt 
financings and interest income from investments of cash and cash equivalents.  During fiscal year 2011, 
we had a net decrease in cash and cash equivalents of $2,478,751.  The decrease resulted from cash used 
in operating and investing activities of $15,530,306 and $545,919 offset by cash provided by financing 
activities of $13,597,474.  

On  June  5,  2009,  the  Company  closed  on  a  purchase  agreement  to  issue  2,857,143  shares  of 
common stock at a price of $1.05 per share to an institutional investor for gross proceeds of $3,000,000 
and incurred $289,090 of stock issuance costs.  The investor was also issued: 

1) Series I warrants to purchase 2,222,222 shares of common stock at a purchase price of $1.05 per 

share at any time before September 3, 2009; 

2) Series II warrants to purchase 1,866,666 shares of common stock at a purchase price of $1.25 per 

share at any time from December 3, 2009 to June 5, 2012; and 

3) Series III warrants to purchase 1,555,555 shares of common stock at a purchase price of $1.50 per 

share at any time from December 3, 2009 to June 5, 2014. 

These  warrants  have  been  valued  at  $3,328,937  and  recorded  as  warrant  liabilities.    The  closing 
costs included 142,857 warrants valued at $122,257 and were recorded as a financing expense. Series I 
warrants  to  purchase  2,222,222  shares  of  common  stock  at  a  purchase  price  of  $1.05  per  share  have 
expired. 

On September 21, 2009, the Company issued 3,102,837 shares of common stock at a purchase price 
of $1.13 per share to Teva for total net proceeds of $3,371,340, which include $128,659 of stock issuance 
costs.  

On  October  23,  2009,  the  Company  closed  on  a  purchase  agreement  to  issue  6,072,383  shares  of 
common stock at a price of $0.82 per share to five institutional investors for gross proceeds of $5,000,000 
less  $351,928  of  stock  issuance  costs.    The  investors  were  also  issued  warrants  to  purchase  2,125,334 
shares of common stock at a purchase price of $1.00 per share, exercisable on or after the date of delivery 
until the five-year anniversary.  These warrants have been valued at $1,012,934 and recorded as warrant 
liabilities.    The  closing  costs  included  245,932  warrants  valued  at  $101,693  and  were  recorded  as  a 
financing expense.  

43 

 
 
 
 
 
 
On  June  30,  2010,  the  Company  closed  on  a  purchase  agreement  to  issue  6,666,667  shares  of 
common  stock  at  a  price  of  $1.50  per  share  to  an  institutional  investor  for  net  proceeds  of  $9,318,227 
which  includes  $681,773  of  stock  issuance  costs.   The  investors  were  also  issued  warrants to  purchase 
2,000,000 shares of common stock at a purchase price of $1.90 per share, exercisable on or after the date 
of delivery until the five-year anniversary.  There warrants have been valued at $1,800,800 and recorded 
as warrant liabilities.  The closing costs included 200,000 warrants, valued at $180,080 and recorded as a 
financing expense. 

On  March  31,  2011,  the  Company  closed  on  a  purchase  agreement  to  issue  8,333,333  shares  of 
common  stock  at  a  price  of  $1.50  per  share  to  an  institutional  investor  for  net  proceeds  of  $9,293,876 
which  includes  $706,124  of  cash  stock  issuance  costs.    The  investors  were  also  issued  warrants  to 
purchase 3,333,333 shares of common stock at a purchase price of $1.50 per share, exercisable on or after 
six  months  from  the  date  of  delivery  until  the  five-year  anniversary  of  the  date  the  warrants  are 
exercisable.  There warrants were valued at $2,826,666 and recorded as warrant liabilities.  The closing 
costs included 208,333 warrants, valued at $97,667 and recorded as a financing expense. 

For the next 15 months, we will have to fund all of our operations and capital expenditures from 
the  net  proceeds  of  equity  and  debt  offerings  we  may  make,  cash  on  hand,  licensing  fees  and  grants.  
Although we expect to have to pursue additional financing, there can be no assurance that we will be able 
to secure financing when needed or obtain such financing on terms satisfactory to us, if at all, or that any 
additional funding we do obtain will be sufficient to meet our needs in the long term.  If we are not able to 
raise sufficient additional money, we will have to reduce our research and development activities.   

Contractual Obligations   

We  have  contracted  with  various  vendors  to  provide  research  and  development  services.  The 
terms  of  these  agreements  usually  require  an  initiation  fee  and  monthly  or  periodic  payments  over  the 
term of the agreement, ranging from 2 months to 36 months. The costs to be incurred are estimated and 
are  subject  to  revision.  As  of  December  31,  2011,  the  total  contract  value  of  these  agreements  was 
approximately  $19,406,124  and  we  made  payments  totaling  $15,103,318  under  the  terms  of  the 
agreements.    All  of  these  agreements  may  be  terminated  by  either  party  upon  appropriate  notice  as 
stipulated in the respective agreements. 

On September 9, 2010, we and three of our key executives entered into Amended and Restated 
Employment  Agreements.    The  Amended  and  Restated  Employment  Agreements  replace  the  prior 
employment  contracts  entered  into  on  August  10,  2009.   We  entered  into  the  Amended  and  Restated 
Employment Agreements in order to provide the key executives with: (i) an automatic one year renewal 
upon  the  expiration  of  the  initial  three  year  term  and  upon  each  consecutive  year  term  unless  such 
employment  with  the  Company  is  terminated  earlier  by  the  Company  or  the  executives;  (ii)  an  annual 
base salary adjustment for inflation as determined by the Consumer Price Index subject to review by the 
Company’s Compensation Committee; (iii) an increase in the Company provided life insurance coverage 
from an amount equal to two times the executive’s annual base salary to an amount equal to four times 
the executive’s annual base salary; and (iv) a one-time cash payment, subject to applicable withholding 
requirements  under  applicable  state  and  federal  law,  in  an  amount  equal  to  the  executive’s  increased 
income  tax  costs  as  a  result  of  payments  made  to  the  executive  by  the  Company  under  the  change  of 
control provisions of the Amended and Restated Employment Agreement. Other than these changes, the 
new  contracts  have  substantially  similar  terms  to  the  executives’  prior  employment  agreements.    The 
agreements result in annual commitments of $350,000, $250,000 and $200,000, respectively. 

On  June  22,  2009,  we  entered  into  a  License  Agreement  with  Korea  Research  Institute  of 
Chemical Technology (KRICT) to acquire the rights to all intellectual properties related to Quinoxaline-

44 

 
 
 
 
 
 
Piperazine derivatives that were synthesized under a Joint Research Agreement.  The initial license fee 
was $100,000, all of which was paid as of December 31, 2009.  The agreement with KRICT calls for a 
one-time  milestone  payment  of  $1,000,000  within  30  days  after  the  first  achievement  of  marketing 
approval  of  the  first  commercial  product  arising  out  of  or  in  connection  with  the  use  of  KRICT’s 
intellectual properties.  As of December 31, 2011, this milestone has not occurred. 

On June 29, 2009, we signed a five year lease for 5,466 square feet of office space in Rockville, 
Maryland commencing on June 29, 2009.  The lease requires annual base rents of $76,524 with increases 
over the next five years. Under the leasing agreement, we pay our allocable portion of real estate taxes 
and common area operating charges.  We paid $148,593, 108,418, and $38,262 for rent under this lease in 
the years ended December 31, 2011, 2010 and 2009, respectively. 

Future rental payments over the next five years and thereafter are as follows: 

2012 
2013 
2014 

158,835 
162,806 
  82,408 
           $404,049 

In connection with the lease agreement, we issued a letter of credit of $100,000 in favor of the 
lessor.    We  have  restricted  cash  equivalents  of  the  same  amount  for  the  letter  of  credit.    On  August  2, 
2010, the letter of credit was reduced to $50,000 per the lease agreement. 

On  September  21,  2009,  the  Company  closed  on  a  securities  purchase  agreement  with  Teva, 
under which Teva purchased 3,102,837 shares of our common stock for $3.5 million. Contemporaneous 
with the execution and delivery of this agreement, the parties executed a research and exclusive license 
option  agreement  (“RELO”)  pursuant  to  which  the  Company  agreed  to  use  $2,000,000  from  the  gross 
proceeds of the issuance and sale of shares to Teva to fund a research and development program for the 
pre-clinical  development  of  RX-3117.    On  January  19,  2011,  the  Company  entered  into  a  second 
amendment  to  the  securities  purchase  agreement  (the  “Second  Amendment”)  in  which  Teva  purchased 
2,334,515  shares  of  the  common  stock  of  the  Company  for  gross  proceeds  of  $3,950,000,  which  the 
Company agreed to use for the further preclinical development of RX-3117.  At December 31, 2011, the 
Company  has  proceeds  remaining  of  $1,394,265  and  has  included  this  amount  in  restricted  cash 
equivalents.  The Company will be eligible to receive royalties on net sales of RX-3117 worldwide.   

On June 28, 2010, we signed a one year renewal to use lab space commencing on July 1, 2010.  The 

lease requires monthly rental payments of $4,554. 

We  established  a  401(k)  plan  for  our  employees  where  we  match  100%  of  the  first  3%  of  the 
employee’s  deferral  plus  50%  of  an  additional  2%  of  the  employee’s  deferral.   Expense  related  to  this 
matching contribution aggregated $66,162, $65,019, and $49,519 for the years ended December 31, 2011, 
2010, and 2009, respectively. 

On  August  31,  2011,  we  entered  into  an  agreement  with  a  consultant  for  advisory  services 
pertaining to securing of grants or other funding sources.  Per the terms of the agreement, the consultant 
will be compensated in shares of restricted common stock calculated by a formula applied to the funding 
received.    As  of  December  31,  2011,  we  had  not  received  funding  or  issued  stock  resulting  from  this 
agreement. 

45 

 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
The table below presents contractual cash obligations by period, as of December 31, 2011.   

Contractual Obligations 
Operating Leases  
Total: 

Payments due by period 

Total 

Less than 1 
year 

1-3 years 

3-5 years 

Greater than 
5 years 

$   431,373      $   186,519      $   245,214      $              -      $              -      
$   431,373      $   186,519      $   245,214      $              -      $              -      

Current and Future Financing Needs 

We  have  incurred  negative  cash  flow  from  operations  since  we  started  our  business.    We  have 
spent, and expect to continue to spend, substantial amounts in connection with implementing our business 
strategy,  including  our  planned  product  development  efforts,  our  clinical  trials,  and  our  research  and 
development efforts.  Total cash, including restricted cash and marketable securities, was $13,243,253 as 
of December 31, 2011.  Based on our current plans and our capital resources, we believe that our cash and 
cash equivalents will be sufficient to enable us to meet our minimum planned operating needs through the 
next fifteen months, which would entail focusing our resources on Phase II clinical trials of Archexin, and 
the  further  development  of  our  preclinical  pipeline.    Through  the  end  of  2012,  we  expect  to  spend  a 
minimum of approximately $0.2 million on clinical development for Phase II clinical trial of Archexin, 
and  approximately  $0.4  million  will  be  paid  to  close  out  the  Serdaxin  MDD  Phase  IIb  clinical  trial.    
These figures include our commitments described under “Contractual Obligations of this Item 7.  We also 
expect  to  pay  $4.3  million  on  the  development  of  our  preclinical  pipeline,  $4.7  million  on  general 
corporate  expenses  and  $220,000  on  facilities  rent.      We  will  need  to  seek  additional  financing  to 
implement and fund other drug candidate development, clinical trial and research and development efforts 
to the maximum extent of our operating plan, including in-vivo animal and pre-clinical studies, Phase II 
clinical trials for new product candidates, as well as other research and development projects.  If we are 
not  able  to  secure  additional  financing,  we  will  not  be  able  to  implement  and  fund  the  research  and 
development. 

However, the actual amount of funds we will need to operate is subject to many factors, some of 

which are beyond our control.  These factors include the following: 

• 

• 

• 

• 

the progress of our product development activities; 

the number and scope of our product development programs; 

the progress of our pre-clinical and clinical trial activities; 

the  progress  of  the  development  efforts  of  parties  with  whom  we  have  entered  into 
collaboration agreements; 

•  our ability to maintain current collaboration programs and to establish new collaboration 

arrangements; 

• 

• 

the  costs  involved  in  prosecuting  and  enforcing  patent  claims  and  other  intellectual 
property rights; and 

the costs and timing of regulatory approvals. 

46 

 
 
 
 
 
 
 
 
 
 
 
 
 
Impact of Inflation 

To date inflationary factors have not had a significant effect on our operations. 

Off-Balance Sheet Arrangements 

We do not have any off-balance sheet arrangements.   

47 

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

For the year ended December 31, 2011, we are exposed to the following market risks: 

Interest Rate Risk 

We invest our cash in a variety of financial instruments.  At December 31, 2011, our cash was 
invested primarily in short term bank deposits and municipal obligations, all of which were denominated 
in U.S. dollars.  Due to the conservative nature of these investments, which primarily bear interest at fixed 
rates, we do not believe we have material exposure to interest rate risk.  At December 31, 2011, we had 
no debt instruments on our balance sheet.   

Foreign Currency Risk 

We are exposed to risks associated with foreign currency transactions on contracts with vendors 
associated outside of the United States.  Accordingly changes in the value of the U.S. dollar, relative to 
other currencies, may have an impact on our financial statements and earnings.  The number and dollar 
amount of contracts denominated in foreign currency is immaterial; therefore, we believe we do not have 
material exposure to foreign currency risk.      

Item 8.  Financial Statements and Supplementary Data. 

Our  financial  statements  and  financial  statement  schedule  and  the  Report  of  the  Independent 
Registered Public Accounting Firm thereon filed pursuant to this Item 8 and are included in this annual 
report on Form 10-K beginning on page F-1. 

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.  Under  the  supervision  and  with  the 
participation of our management, including our Chief Executive Officer and Chief Financial Officer, we 
evaluated  the  effectiveness  of  the  design  and  operation  of  our  disclosure  controls  and  procedures  (as 
defined  in  Rule  13a-15(e)  and  15d-15(e)  under  the  Securities  Exchange  Act  of  1934  (the  “Exchange 
Act”)) as of the end of the period covered by this report. Based upon that evaluation, our Chief Executive 
Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of the end of 
the period covered by this report were effective such that the information required to be disclosed by us in 
reports  filed  under  the  Securities  Exchange  Act  of  1934  is  (i) recorded,  processed,  summarized  and 
reported  within  the  time  periods  specified  in  the  SEC’s  rules  and  forms  and  (ii) accumulated  and 
communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as 
appropriate  to  allow  timely  decisions  regarding  disclosure.  A  controls  system  cannot  provide  absolute 
assurance, however, that the objectives of the controls system are met, and no evaluation of controls can 
provide absolute assurance that all control issues and instances of fraud, if any, within a company have 
been detected. 

Changes  in  Internal  Control  Over  Financial  Reporting.    During  the  most  recent  quarter  ended 
December 31, 2011, there has been no change in our internal control over financial reporting (as defined 

48 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
in Rule 13a-15(f) and 15d-15(f) under the Exchange Act) ) that has materially affected, or is reasonably 
likely to materially affect, our internal control over financial reporting. 

49 

 
 
 
 
MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING 

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over 
financial  reporting  (as  defined  in  Rule 13a-15(f)  under  the  Exchange  Act).    Our  internal  control  over 
financial  reporting  is  a  process  designed  to  provide  reasonable  assurance  regarding  the  reliability  of 
financial  reporting  and the  preparation of  financial statements  for  external purposes  in  accordance  with 
generally accepted accounting principles and includes those policies and procedures that:   

• 

• 

• 

Pertain  to  the  maintenance  of  records  that,  in  reasonable  detail,  accurately  and 
fairly reflect the transactions and the dispositions of the assets of the Company; 

Provide reasonable assurance that transactions are recorded as necessary to permit 
preparation  of  financial  statements  in  accordance  with  generally  accepted 
accounting principles, and that receipts and expenditures of the Company are being 
made  only  in  accordance  with  authorization  of  management  and  the  board  of 
directors of the Company; and 

Provide  reasonable  assurance  regarding  prevention  or  timely  detection  of 
unauthorized  acquisition,  use,  or  disposition  of  the  Company’s  assets  that  could 
have a material effect on the financial statements.   

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or 
detect misstatements.  Also, projections of any evaluations of effectiveness to future periods are subject to 
risk that controls may become inadequate because of changes in conditions or because of declines in the 
degree of compliance with the policies or procedures.   

Our management, with the participation of the Chief Executive Officer and Chief Financial Officer, 
assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 
2011.    In  making  this  assessment,  the  Company’s  management  used  the  criteria  set  forth  by  the 
Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (COSO)  in  Internal  Control-
Integrated Framework.   

Based  on  this  evaluation,  our  management,  with  the  participation  of  the  Chief  Executive  Officer 
and Chief Financial Officer, concluded that, as of December 31, 2011 our internal control over financial 
reporting was effective.   

Management  assessment  of  the  effectiveness  of  the  Company’s  internal  control  over  financial 
reporting  has  been  audited  by  ParenteBeard  LLC,  an  independent  registered  public  accounting  firm.  
ParenteBeard LLC has issued an attestation report on the effectiveness of the Company’s internal control 
over financial reporting, which appears herein. 

50 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm 
on Internal Control Over Financial Reporting 

To the Board of Directors 
Rexahn Pharmaceuticals, Inc. 

We have audited Rexahn Pharmaceuticals, Inc.’s (the “Company”) internal control over financial 
reporting as of December 31, 2011, based on criteria established in Internal Control - Integrated 
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(COSO).  Rexahn Pharmaceuticals, Inc.’s management is responsible for maintaining effective internal 
control over financial reporting, and for its assessment of the effectiveness of internal control over 
financial reporting, included in the accompanying Management’s Report on Internal Control Over 
Financial Reporting.  Our responsibility is to express an opinion on the Company’s internal control over 
financial reporting based on our audit. 

We conducted our audit 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 effective internal control over financial reporting was maintained in all 
material respects.  Our audit of internal control over financial reporting included obtaining an 
understanding of internal control over financial reporting, assessing the risk that a material weakness 
exists, and testing and evaluating the design and operating effectiveness of internal control based on 
the assessed risk.  Our audit also included performing such other procedures as we considered 
necessary in the circumstances.  We believe that our audit provides a reasonable basis for our opinion. 

An entity’s internal control over financial reporting is a process designed to provide reasonable 
assurance regarding the reliability of financial reporting and the preparation of financial statements for 
external purposes in accordance with accounting principles generally accepted in the United States of 
America .  An entity’s internal control over financial reporting includes those policies and procedures 
that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the 
transactions and dispositions of the assets of the entity; (2) provide reasonable assurance that 
transactions are recorded as necessary to permit preparation of financial statements in accordance with 
generally accepted accounting principles, and that receipts and expenditures of the entity are being 
made only in accordance with authorizations of management and directors of the entity; and (3) provide 
reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the entity’s assets that could have a material effect on the financial statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements.  Also, projections of any evaluation of effectiveness to future periods are subject to the 
risk that controls may become inadequate because of changes in conditions, or that the degree of 
compliance with the policies or procedures may deteriorate. 

51 

 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm 
on Internal Control Over Financial Reporting (continued) 

In our opinion, Rexahn Pharmaceuticals, Inc. maintained, in all material respects, effective internal 
control over financial reporting as of December 31, 2011, based on criteria established in Internal 
Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (COSO). 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight 
Board (United States), the balance sheet as of December 31, 2011 and 2010, , and the related 
statements of operations, stockholders’ equity (deficit) and comprehensive loss, and cash flows for each 
of the years in the three-year period ended December 31, 2011 and the cumulative period from March 
19, 2011 (inception) to Deecmber 31, 2011, of Rexahn Pharmaceuticals, Inc., and our report dated 
March 15, 2012 expressed an unqualified opinion. 

/s/ PARENTEBEARD LLC 

Reading, Pennsylvania 
March 15, 2012 

52 

 
 
 
 
 
 
 
 
  
  
 
Item 9B.  Other Information. 

None. 

53 

 
 
 
 
PART III 

Item 10.  Directors, Executive Officers and Corporate Governance. 

The information to be provided under the caption “Election of Directors,” to be contained in the 
Definitive  Proxy  Statement  and  required  to  be  disclosed  in  this  Item  10,  is  hereby  incorporated  by 
reference in this Item 10; and the information to be provided under the caption “Section 16(a) Beneficial 
Ownership Reporting Compliance,” to be contained in the Definitive Proxy Statement and required to be 
disclosed pursuant to Section 16(a) of the Exchange Act, is also hereby incorporated by reference in this 
Item 9.   

Code of Ethics 

We  have  adopted  a  code  of  ethics  that  applies  to  our  principal  executive  officer,  principal 
financial  officer,  principal  accounting  officer  or  controller,  or  persons  performing  similar  functions.  
Rexahn’s Code of Ethics is posted on its website, which is located at www.rexahn.com.   

We intend to  satisfy  any  disclosure requirement  regarding  an  amendment  to, or waiver  from,  a 
provision  of  this  code  of  ethics  by  posting  such  information  on  our  website,  at  the  address  specified 
above.   

Item 11.  Executive Compensation. 

The information to be provided under the caption “Executive Compensation and Other Matters,” 
to be contained in the Definitive Proxy Statement and required to be disclosed in this Item 11, is hereby 
incorporated by reference in this Item 11. 

Item 12.  Security  Ownership  of  Certain  Beneficial  Owners  and  Management  and  Related 
Stockholder Matters. 

The information to be provided under the captions “Equity Compensation Plan Information” and 
“Security  Ownership  of  Management  and  Certain  Security  Holders,”  each  to  be  contained  in  the 
Definitive  Proxy  Statement  and  required  to  be  disclosed  in  this  Item 12,  is  hereby  incorporated  by 
reference in this Item 12. 

Item 13.  Certain Relationships and Related Transactions; and Director Independence. 

Related Transactions 

The  information  to  be  provided  under  the  caption  “Certain  Relationships  and  Related 
Transactions,” to be contained in the Definitive Proxy Statement and required to be disclosed in this Item 
13, is hereby incorporated by reference in this Item 13.   

Item 14.  Principal Accounting Fees and Services. 

The information to be provided under the caption “Proposal 2 Ratification of the Appointment of 
the  Independent  Registered  Public  Accounting  Firm,  Fees,”  to  be  contained  in  the  Definitive  Proxy 
Statement and required to be disclosed in this Item 14, is hereby incorporated by reference in this Item 14.  

54 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 15.  Exhibits, Financial Statement Schedules. 

(a)  The following documents are filed as a part of this Annual Report on Form 10-K:  

(1)   Financial Statements: 

 Report of ParenteBeard LLC 

 Balance Sheet as of December 31, 2011 and  December 31, 2010 

F-1 

F-2 

 Statement of Operations for the years ended December 31, 2011, December 31, 2010,  
 December 31, 2009 and cumulative from  March 19, 2001 (Inception) to December 31, 2011   

F-3 

 Statement of Stockholders’ Equity (Deficit) and Comprehensive Loss from  March 19, 2001   F-4 
 (Inception) to December 31, 2011 

 Statement of Cash Flows for the years ended December 31, 2011, December 31, 2010,  
 December 31, 2009 and cumulative from March 19, 2001 (Inception) to December 31, 2011   

F-7 

 Notes to the Financial Statements 

F-10 

(2)   Exhibits: 

The documents listed below are filed with this Annual Report on Form 10-K as exhibits or 
incorporated into this Annual Report on Form 10-K by reference as noted: 

Exhibit 
Number 
3.1 

3.2 

4.1 

4.2 

4.3 

*10.1.1 

*10.1.2 

*10.1.3 

*10.2 

Exhibit Description 

Amended and Restated Certificate of Incorporation, filed as Appendix G to the Company’s 
Definitive Proxy Statement on Schedule 14A (File No. 000-50590) dated April 29, 2005, is 
incorporated herein by reference. 
Amended and Restated Bylaws, filed as Exhibit 3.1 to the Company’s Current Report on 
Form 8-K filed on March 26, 2010, is incorporated herein by reference. 
Specimen Certificate for the Company’s Common Stock, par value $.0001 per share, filed as 
Exhibit 4.3 to the Company’s Registration Statement on Form S-8 (File No. 333-129294) 
dated October 28, 2005, is incorporated herein by reference. 
Form of Senior Debt Securities Indenture, filed as Exhibit 4.3 to the Company’s Registration 
Statement on Form S-3 dated June 22, 2011, is incorporated herein by reference. 
Form of Subordinated Debt Securities Indenture, filed as Exhibit 4.3 to the Company’s 
Registration Statement on Form S-3 dated June 22, 2011 is incorporated herein by reference.   
Rexahn Pharmaceuticals, Inc. Stock Option Plan, as amended, filed as Exhibit 4.4 to the 
Company’s Registration Statement on Form S-8 (File No. 333-129294) dated October 28, 
2005, is incorporated herein by reference. 
Form of Stock Option Grant Agreement for Employees, filed as Exhibit 4.5.1 to the 
Company’s Registration Statement on Form S-8 (File No. 333-129294) dated October 28, 
2005, is incorporated herein by reference. 
Form of Stock Option Grant Agreement for Non-Employee Directors and Consultants, filed as 
Exhibit 4.5.2 to the Company’s Registration Statement on Form S-8 (File No. 333-129294) 
dated October 28, 2005, is incorporated herein by reference. 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 

55 

 
 
 
 
  
 
 
 
 
  
 
  
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
  
  
   
 
  
 
  
     
 
   
  
 
 
 
 
Pharmaceuticals, Inc. and C. H. Ahn, filed as Exhibit 10.1 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 
Pharmaceuticals, Inc. and T. H. Jeong, filed as Exhibit 10.3 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Lease Agreement, dated June 5, 2009, by and between Rexahn Pharmaceuticals, Inc. and The 
Realty Associates Fund V, L.P., filed as Exhibit 10.4 to the Company’s Quarterly Report on 
Form 10-Q for the quarterly period ended June 30, 2009, is incorporated herein by reference 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 
Pharmaceuticals, Inc. and Rakesh Soni, filed as Exhibit 10.2 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Securities Purchase Agreement, dated as of May 19, 2009 by and between Rexhan 
Pharmaceuticals, Inc. and the purchaser signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K filed on May 20, 2009, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Series I, II, and III Common Stock Purchase Warrants, 
filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on May 20, 2009, is 
incorporated herein by reference. 
Research and Exclusive License Option Agreement, dated as of June 26, 2009, by and 
between Rexahn Pharmaceuticals, Inc. and Teva Pharmaceutical Industries Limited, filed as 
Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on September 21, 2009, is 
incorporated herein by reference.  
Securities Purchase Agreement, dated as of June 26, 2009, by and between Rexahn 
Pharmaceuticals, Inc. and Teva Pharmaceutical Industries Limited (the “Teva Securities 
Purchase Agreement”), filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K 
filed on September 21, 2009, and Amendment No. 1 to the Teva Securities Purchase 
Agreement, filed as Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on 
September 21, 2009, are incorporated herein by reference. 
Securities Purchase Agreement, dated as of October 19, 2009, by and between Rexahn 
Pharmaceuticals, Inc. and the purchasers signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K, filed on October 20, 2009, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on October 20, 2009, is incorporated 
herein by reference. 
Securities Purchase Agreement, dated as of  June 28, 2010 by and between Rexahn 
Pharmaceuticals, Inc. and the purchasers signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K, filed on June 29, 2010, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on June 29, 2010, is incorporated herein 
by reference. 
Amendment No. 2 to the Teva Securities Purchase Agreement, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K filed on January 20, 2011, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on March 30, 2011, is incorporated 
herein by reference. 
Statement re Computation of Ratios 

*10.3 

10.4 

*10.5 

10.6 

10.7 

10.8 

10.9 

10.10 

10.11 

10.12 

10.13 

10.14 

10.15 

12 

56 

 
 
14 

16 

23 
24 

31.1 

31.2 

32.1 

32.2 

101.INS 
101.SCH 
101.CAL 
101.DEF 
101.LAB 
101.PRE 

Code of Ethics and Business Conduct, filed as Exhibit 14 to the Company’s Annual Report on 
10-K for the fiscal year ended December 31, 2008, filed on March 16, 2009, is incorporated 
herein by reference. 
Letter of Lazar Levine & Felix LLP dated February 27, 2009, filed as Exhibit 16.1 to the 
Company’s Amended Current Report on Form 8-K filed on March 2, 2009, is incorporated 
herein by reference. 
Consent of ParenteBeard LLC, independent registered public accounting firm.   
Power of Attorney 

Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a).  

Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a). 

Certification of Chief Executive Officer of Periodic Report Pursuant to 18 U.S.C. 
Section 1350. 
Certification of Chief Financial Officer of Periodic Report Pursuant to 18 U.S.C. 
Section 1350. 
XBRL Instance Document 
XBRL Taxonomy Extension Schema 
XBRL Taxonomy Calculation Linkbase 
XBRL Taxonomy Definition Linkbase 
XBRL Taxonomy Label Linkbase 
XBRL Taxonomy Presentation Linkbase 

_______________________ 
* Management contract or compensation plan or arrangement.  

57 

 
 
  
 
 
SIGNATURES 

In accordance with the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the 
issuer has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized 
on this 15 day of March, 2012. 

REXAHN PHARMACEUTICALS, INC. 

By:  /s/ Chang H. Ahn 
Chang H. Ahn 
Chairman and Chief Executive Officer 

In accordance with the requirement of the Securities Exchange Act of 1934, this report has been 
signed on the 15 day of March, 2012 by the following persons on behalf of the issuer and in the 
capacities indicated: 

Name 

/s/ Chang H. Ahn* 
Chang H. Ahn 
/s/ Tae Heum Jeong* 
Tae Heum Jeong 

/s/ Peter Brandt* 
Peter Brandt 
/s/ David McIntosh* 
David McIntosh 
/s/ Charles Beever* 
Charles Beever 
/s/ Kwang Soo Cheong*  
Kwang Soo Cheong 
/s/ Richard Kivel* 
Richard Kivel 

Title 

and  Chief  Executive  Officer 

Chairman 
(Principal Executive Officer) 
Chief  Financial  Officer,  Secretary  and 
and 
Director 

(Principal  Financial 

Accounting Officer) 

Director 

Director 

Director 

Director 

Director 

* By: /s/ Tae Heum Jeong, Attorney-in Fact 

Tae Heum Jeong, Attorney-in-Fact** 

** By authority of the power of attorney filed as Exhibit 24 hereto.   

58 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm 

To the Board of Directors 
Rexahn Pharmaceuticals, Inc. 

We have audited the accompanying balance sheets of Rexahn Pharmaceuticals, Inc. (the “Company”) (a 
development stage company) as of December 31, 2011 and 2010, and the related statements of operations, 
stockholders’ equity (deficit) and comprehensive loss, and cash flows for each of the years in the period 
ended December 31, 2011, and the cumulative period from March 19, 2001 (inception) to December 31, 
2011.  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.  An audit includes 
examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An 
audit also includes assessing the accounting principles used and significant estimates made by management, 
as well as evaluating the overall 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 
financial position of Rexahn Pharmaceuticals, Inc. as of December 31, 2011 and 2010, and the results of its 
operations and its cash flows for each of the years in the three-year period ended December 31, 2011, and 
the cumulative period from March 19, 2001 (inception) to December 31, 2011, in conformity with 
accounting principles generally accepted in the United States of America. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States), Rexahn Pharmaceuticals, Inc. internal control over financial reporting as of December 31, 
2011, based on criteria established in Internal Control-Integrated Framework issued by the Committee of 
Sponsoring Organizations of the Treadway Commission (COSO), and our report dated March 15, 2012 
expressed an unqualified opinion. 

/s/ PARENTEBEARD LLC 

Reading, Pennsylvania 
March 15, 2012

F-1 

 
 
 
  
 
 
 
 
 
  
  
  
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Balance Sheet 

Current Assets: 

Cash and cash equivalents 
Marketable securities (note 4) 
Research tax credit receivable (note 16) 
Prepaid expenses and other current assets (note 5) 
Note receivable – current portion (note 6) 

Total Current Assets 

Restricted Cash Equivalents (note 15) 

Note Receivable (note 6) 

Equipment, Net (note 7) 

Total Assets 

Current Liabilities: 

   December 31,  
2011 

   December 31,  
2010  

ASSETS 

$ 

9,861,488 
1,950,000 
- 
333,171 
18,682 

$  12,340,239 
2,451,620 
145,513 
706,649 
28,023 

12,163,341 

15,672,044 

1,431,765 

- 

94,542 

401,893 

18,682 

123,565 

$   13,689,648 

$   16,216,184 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Accounts payable and accrued expenses (note 8) 

$  1,185,405  

$  1,820,900  

Deferred Research and Development Arrangement (note 9)  

Other Liabilities (note 10) 

Warrant Liabilities (note 13) 

Total Liabilities 

Commitments and Contingencies (note 16) 

Stockholders’ Equity (note 11): 

825,000 

104,388 

900,000 

133,117 

868,725 

2,966,710 

2,983,518 

5,820,727 

Preferred stock, par value $0.0001, 100,000,000 authorized  shares, none             
issued and outstanding 
Common stock, par value $0.0001, 500,000,000 authorized shares, 
95,359,861 (2010 – 84,175,054) issued and 95,345,656 (2010 – 
84,160,849) outstanding 
Additional paid-in capital 
Accumulated other comprehensive loss 
Accumulated deficit during the development stage 
Treasury stock, 14,205 shares, at cost 

- 

9,536 

67,809,617 
- 
(57,084,613) 
(28,410) 

- 

8,418 

56,157,452 
(2,340) 
(45,739,663) 
(28,410) 

Total Stockholders’ Equity 

10,706,130 

10,395,457 

Total Liabilities and Stockholders’ Equity  

 $  13,689,648 

 $  16,216,184 

(See accompanying notes to financial statements.) 

F-2 

 
 
 
 
 
  
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statement of Operations 

For the Year Ended December 31, 

2011 

2010 

2009 

Cumulative 
from March 19, 
2001 
(Inception) to 
December 31, 
2011 

$                   - 

$                   - 

$                   - 

$                   - 

Revenues: 

Expenses: 

General and administrative 
Research and development 
Patent fees 
Depreciation and amortization 

3,547,829 
11,992,087 
546,027 
45,070 

5,990,624 
3,934,701 
329,925 
50,659 

2,944,103 
3,176,971 
303,220 
41,604 

27,346,995 
31,885,603 
2,101,005 
640,537 

Total Expenses 

16,131,013 

10,305,909 

6,465,898 

61,974,140 

Loss from Operations 

(16,131,013) 

(10,305,909) 

(6,465,898) 

(61,974,140) 

Other Income (Expense) 

Realized (loss) gain on 

marketable securities         .     

Interest income 
Interest expense 
Other income 
Unrealized gain (loss) on  
        fair value of warrants 
Unrealized gain on fair value of  
        put  feature  on  common        

 stock 

Financing expense 
Beneficial conversion feature 

Total Other Income (Expense) 

Net  Loss  Before  Provision  for 
Income Taxes 

(3,960) 

109,240 
- 
- 
4,778,450 

- 

11,025 

(13,301) 

133,268 
- 
56,047 
(3,823,146) 

67,445 
- 
- 
1,793,101 

1,421,307 
(301,147) 
56,047 
3,676,105 

- 

97,713 

1,915,179 

2,315,539 

(97,667) 
- 
4,786,063 

(180,080) 
- 
(3,716,198) 

(223,950) 
- 
3,562,800 

(640,023) 
(1,625,000) 
4,889,527 

(11,344,950) 

   (14,022,107) 

   (2,903,098) 

 (57,084,613) 

Provision for Income Taxes 

- 

- 

- 

- 

Net Loss 

$ (11,344,950) 

$   (14,022,107) 

$   (2,903,098) 

$ (57,084,613) 

Net loss per share, basic and diluted 

Weighted  average  number  of  shares 
outstanding, basic and diluted 

$(0.12) 

$(0.18) 

$(0.05) 

93,048,490 

78,662,495 

61,441,442 

(See accompanying notes to financial statements.) 

F-3 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statements of Stockholders’ Equity (Deficit) and Comprehensive Loss  
Period from March 19, 2001 (Inception) to December 31, 2011 

 Common Stock  

 Number of  
 shares  

 Amount  

Additional 
Paid in 
Capital 

 Accumulated  
 Deficit  
 During the  
 Development  
 Stage  

 Treasury Stock  

 Number of  
 stock  

 Amount  

Accumulated 
Other 
Comprehensive  
 Loss 

 Total  
 Stockholders’  
 Equity  
 (Deficit)  

  $ 

- 
- 
(625,109) 

  $ 

-  
- 
- 

Opening balance, 
March 19, 2001  
Common stock issued 
Net loss 
Balances at, December 

31, 2001  

Net loss 
Balances at, December 

31, 2002 

Common stock issued 
Stock based 

compensation 

Net loss 
Balances at, December 

31, 2003 

Common stock issued 
Stock based 

compensation 

Net loss 
Balances at, December 

31, 2004 

Stock split (5 for 1) 
Common stock issued 
in connection with 
merger 

Common stock issued 

for cash 

Common stock issued 
on conversion of 
convertible debt 
Exercise of stock 

options 

Common stock issued 
in exchange for 
services 

Beneficial conversion 

feature   
Stock based 

compensation 

Net loss 
Balances at, December 

31, 2005 

  $ 

  $ 

- 
7,126,666  
-  

7,126,666  
-  

7,126,666  
500,000  

- 
- 

-  
71,266 
- 

71,266  
- 

71,266 
5,000 

- 
- 

 7,626,666  
1,500  

76,266 
15  

- 
- 

- 
- 

- 
4,448,702 
- 

4,448,702  
- 

4,448,702  
1,995,000  

538,074  
- 

6,981,776  
1,785  

230,770  
- 

(625,109) 
(1,181,157) 

(1,806,266) 
- 

- 
(2,775,075) 

(4,581,341) 
- 

- 
(3,273,442) 

7,628,166  
 30,512,664  

76,281 
(72,467) 

7,214,331  
72,467  

(7,854,783) 
- 

3,397,802  

 4,175,000  

340 

417  

(340) 

8,349,565  

 650,000  

65  

1,299,935  

 40,000  

7,000  

-  

- 
- 

4  

1  

- 

- 
- 

9,596  

21,876  

1,625,000  

436,748  
-  

- 
(6,349,540) 

 46,410,632  

4,641  

19,029,178  

(14,204,323) 

- 

- 

- 

- 

- 

- 

  $ 

- 
- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 

- 

- 

- 

- 

- 

- 
- 

- 

- 
- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 

- 

- 

- 

- 

- 

- 
- 

- 

  $ 

- 
4,519,968  
(625,109) 

3,894,859  
(1,181,157) 

2,713,702  
2,000,000  

538,074  
(2,775,075) 

2,476,701  
1,800  

230,770  
(3,273,442) 

(564,171) 
- 

- 

8,349,982  

1,300,000  

9,600  

21,877  

1,625,000  

436,748  
(6,349,540) 

4,829,496  

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 
- 

- 

- 

- 

- 

- 

- 

- 
- 

- 

(See accompanying notes to financial statements.) 

F-4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statements of Stockholders’ Equity (Deficit) and Comprehensive Loss (Continued) 
Period from March 19, 2001 (Inception) to December 31, 2011 

 Common Stock  

 Number of  
 shares  

 Amount  

Additional 
Paid-in 
Capital 

 Accumulated  
 Deficit  
 During the  
 Development  
 Stage  

 Treasury Stock  

 Accumulated  
Other  

 Total  
Stockholders’ 

 Number of  
 shares  

 Amount  

Comprehensive 
Loss 

 Equity  
 (Deficit)  

 46,410,632      
 61,705      

4,641  
6  

19,029,178  
14,802  

    (14,204,323) 
- 

- 
- 

- 
- 

385  

3,850,000      
-     
-     
-     

3,849,615  
- 
1,033,956  
- 

- 
- 
- 
(6,486,003) 

- 
14,205  
- 
- 

- 
(28,410) 
- 
- 

- 
- 

- 
- 
- 
- 

4,829,496  
14,808  

3,850,000  
(28,410) 
1,033,956  
(6,486,003) 

Balances at, December 31, 

2005 

Exercise of stock options 
Common stock issued on 

conversion of convertible 
debt 

Purchase of treasury stock 
Stock based compensation 
Net loss 
Balances at December 31, 

2006 

50,322,337 

5,032  

23,927,551  

    (20,690,326) 

14,205  

(28,410) 

  - 

3,213,847  

Common stock issued, as 

restated  

Stock options exercised 
Stock based compensation 
Stock issuance costs 
Net loss, as restated 

Balances at December 31, 

2007, as restated 

Common stock issued, as 

restated  

Stock options exercised 
Stock based compensation 
Net loss, as restated 
Unrealized loss on   

securities available-for –
sale 

Total Comprehensive Loss 
Balances at December 31, 

4,857,159 
127,500 
- 
- 
- 

486  
12  
- 
- 
- 

1,144,219  
59,988  
1,121,646  
(139,674) 
- 

- 
- 
- 
- 
(4,442,331) 

- 
- 
- 
- 
- 

- 
- 
- 
- 
- 

55,306,996 

5,530  

26,113,730  

    (25,132,657) 

14,205  

 (28,410) 

642,858 
90,000 
- 
- 

- 

65 
9  
- 
- 

- 

155,450 
31,191 
484,684 
- 

- 
- 
- 
(3,681,801) 

- 

- 

- 
- 
- 
- 

- 

- 
- 
- 
- 

- 

- 
- 
- 
- 
- 

- 

- 
- 
- 
- 

(550,480) 

1,144,705  
60,000  
1,121,646  
 (139,674) 
(4,442,331) 

958,193  

155,515  
31,200  
484,684 
(3,681,801) 

(550,480) 

(4,232,281) 

2008 

56,039,854 

5,604 

26,785,055 

    (28,814,458) 

14,205 

(28,410) 

(550,480) 

(2,602,689) 

(See accompanying notes to financial statements.) 

F-5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
    
   
   
   
   
    
    
   
   
   
   
   
    
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
   
   
   
   
   
   
   
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statements of Stockholders’ Equity (Deficit) and Comprehensive Loss (Continued) 
Period from March 19, 2001 (Inception) to December 31, 2011 

 Common Stock  

 Number of  

Additional 
Paid-in 

 Accumulated  
 Deficit  
 During the  
 Development  

 Treasury Stock  

 Number of  

 Accumulated  
 Other  
Comprehensive 

 shares  

 Amount  

Capital 

 Stage  

 shares  

 Amount  

Loss 

 Equity  

 (Deficit)  

56,039,854 

5,604 

26,785,055 

    (28,814,458) 

14,205 

(28,410) 

(550,480) 

(2,602,689) 

Balances at December 31, 

2008 

Issuance of common stock 

and units 

15,883,847 

1,588 

9,996,015 

Stock options exercised 

15,000 

Stock issuance costs 

Stock based compensation 
Net loss 
–Reversal of unrealized 
loss on securities 
available-for-sale 

Total Comprehensive Loss 
Balances at December 31, 
   2009 
Issuance of common stock 

and units 

Stock issuance costs 
Common stock issued in 
exchange for services 
Stock options exercised 
Stock warrants exercised 
Stock based compensation 
Net loss 
Unrealized loss on   

securities available-for -
sale 

Total Comprehensive Loss 
Balances at December 31, 
   2010 
Issuance of common stock 

and units 

Stock issuance costs 
Stock options exercised 
Stock warrants exercised 
Stock based compensation 

Net loss 
Reversal of unrealized loss 
on securities available-
for-sale 

Total Comprehensive Loss 
Balances at December 31, 
   2011 

3,600 

(641,018) 

- 

- 

- 

              497,531 
- 

- 
(2,903,098) 

 - 

- 

2 

- 

- 
- 

- 

- 

- 
- 

- 

- 

- 

- 

- 
- 

- 

- 

- 

- 

- 
- 

- 

71,938,701 

       7,194 

       36,641,183 

    (31,717,556) 

14,205 

    (28,410) 

6,666,667 
- 

1,700,000 
155,500 
3,714,186 
- 
- 

667 
- 

170 
16 
371 
- 
- 

- 

- 

8,198,534 
(681,773) 

2,107,830 
107,224 
9,199,797 
             584,657 

- 
- 

- 
- 
- 
- 

- 

- 

    (14,022,107) 

- 

- 
- 

- 
- 
- 
- 
- 

- 

- 
- 

- 
- 
- 
- 
- 

- 

- 

- 

- 
- 

550,480 

- 

- 
- 

- 
- 
- 
- 
- 

9,997,603 

3,602 

 (641,018) 

497,531 
(2,903,098) 

550,480 

(2,352,618) 

         4,902,411 

8,199,201 
 (681,773) 

2,108,000 
107,240 
9,200,168 
584,657 
(14,022,107) 

- 

            (2,340) 

(2,340) 

(14,024,447) 

84,175,054 

       8,418 

56,157,452 

    (45,739,663) 

14,205 

    (28,410) 

            (2,340) 

   10,395,457 

10,667,848 
- 
183,000 
333,959 
- 

- 

- 

1,067 
- 
18 
33 
- 

- 

- 

11,122,265 
(729,727) 
59,222 
561,798 
638,607 

    (11,344,950) 

- 

- 

- 
- 
- 
- 
- 

- 

- 

- 
- 
- 
- 
- 

- 

- 
- 
- 
- 
- 

- 

- 

            2,340 

11,123,332 
         (729,727) 
         59,240 
         561,831 
         638,607 

(11,344,950) 

         2,340 

(11,342,610) 

95,359,861 

$      9,536 

     $  67,809,617 

    $(57,084,613) 

14,205 

$    (28,410) 

$  

- 

$   10,706,130 

(See accompanying notes to financial statements.) 

F-6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
   
          
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
   
   
   
 
   
   
   
         
   
   
   
 
   
   
   
   
 
   
   
   
   
 
   
   
   
   
   
   
 
   
   
   
   
   
 
   
   
   
      
   
   
   
   
   
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statement of Cash Flows 

Cash Flows from Operating Activities: 

2011 

2010 

Net loss 

$  (11,344,950) 

$  (14,022,107) 

2009 
$  (2,903,098) 

2011 
(57,084,613) 

$ 

For the Year Ended December 31, 

Cumulative From 
March 19, 2001 
(Inception) to  

December 31, 

Adjustments to reconcile net loss to net 
cash used in operating activities: 
Beneficial conversion feature 

Compensatory stock 

Depreciation and amortization 

Stock based  compensation 

Amortization of deferred research and     
development arrangement 
Note receivable 

Realized loss (gain) on marketable      
securities 

     Amortization of deferred lease       

incentive 
Unrealized (gain) loss on fair value of       
warrants 
Unrealized gain on fair value  of put    
feature on common  stock 

  Financing expense 

  Deferred lease expenses 

  Loss on impairment of intangible 
assets 

Changes in assets and liabilities: 

Prepaid expenses and other current 
assets 
Research tax credit receivable 

Accounts payable and accrued 
expenses 

- 

- 

45,070 

638,607 

(75,000) 

28,023 

3,960 

(20,000) 

- 

2,108,000 

50,659 

584,657 

(75,000) 

(46,705) 

- 

(20,000) 

- 

- 

41,604 

497,531 

(75,000) 

- 

(11,025) 

(10,000) 

1,625,000 

2,129,877 

640,537 

5,577,629 

(675,000) 

(18,682) 

13,301 

(50,000) 

(4,778,450) 

3,823,146 

(1,793,101) 

(3,676,105) 

- 

(97,713) 

(1,915,179) 

(2,315,539) 

97,667 

(8,729) 

- 

180,080 

24,616 

- 

373,478 

(385,714) 

145,513 

(635,495) 

(145,513) 

1,034,996 

223,950 

38,501 

286,132 

45,830 

- 

427,010 

640,023 

54,388 

286,132 

(333,171) 

- 

1,185,405 

Net Cash Used in Operating Activities 

(15,530,306) 

(6,986,598) 

  (5,146,845) 

(52,000,818) 

(See accompanying notes to financial statements.) 

F-7 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statement of Cash Flows (Continued) 

For the Year Ended December 31, 

Cumulative From 
March 19, 2001 
(Inception) to 
December 31, 

2011 

2010 

2009 

2011 

Cash Flows from Investing Activities: 

Restricted cash equivalents 

Purchase of equipment 

Purchase of marketable securities 

(1,029,872) 

(16,047) 

(8,000,000) 

1,624,167 

(5,246) 

(2,353,960) 

(2,026,060) 

(18,370) 

(1,371,824) 

Proceeds from sales of marketable 

               8,500,000 

         75,000 

         4,758,079 

(1,431,765) 

(564,995) 

(21,123,960) 

19,160,659 

securities 

Payment of licensing fees 

Net Cash (Used in) Provided by  
Investing  Activities 

Cash Flows from Financing Activities: 
Issuance of common stock and units, 

net of issuance costs 

Proceeds from exercise of stock 

options 

- 

- 

- 

(356,216) 

(545,919) 

 (660,039) 

 1,341,825 

(4,316,277) 

13,220,273 

9,318,228 

10,730,320 

55,805,574 

59,240 

107,240 

3,602 

170,082 

Proceeds from exercise of stock 

317,961 

3,263,376 

warrants 

Proceeds from long-term debt 

Proceeds from research contribution 

Purchase of treasury stock 

Net Cash Provided by Financing 

Activities 

Net (Decrease) Increase in Cash and 

Cash Equivalents 

Cash and Cash Equivalents - 

beginning of period 

Cash and Cash Equivalents - end of 
period 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

3,581,337 

5,150,000 

1,500,000 

(28,410) 

13,597,474 

12,688,844 

10,733,922 

66,178,583 

(2,478,751) 

5,042,207 

6,928,902 

9,861,488 

12,340,239 

7,298,032 

369,130 

                        - 

$    9,861,488 

$     12,340,239 

$     7,298,032 

$    9,861,488 

(See accompanying notes to financial statements.) 

F-8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Statement of Cash Flows (Continued) 

For the Year Ended December 31, 

Cumulative From 
March 19, 2001 
(Inception) to 
December 31, 

2011 

2010 

2009 

2011 

               - 

$ 

               - 

$ 

               - 

$              301,147 

2,924,333 

               - 

               - 

1,980,880 

               - 

               - 

$ 

$ 

$ 

4,565,821 

$           11,054,427 

               - 

2,639,199 

$ 

$ 

$ 

4,954,738 

2,639,199 

6,180,660 

5,936,792 

$  

               - 

               - 

    43,953 

$ 

$ 

  100,000  

$       

  100,000 

               - 

$ 

    43,953 

$ 

$ 

$ 

$ 

$ 

$ 

Supplemental Cash Flow Information 

Interest paid 

Non-cash financing and investing 

Warrants issued 

Put feature on common stock issued 

   Dilutive issuances of common stock 

$ 

$ 

$ 

$ 

   Warrant liability extinguishment from      
exercise of warrants 

   Leasehold improvement incentive 

   Settlement of lawsuit 

$    

   243,868 

$ 

$ 

               - 

               - 

(See accompanying notes to financial statements.) 

F-9 

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

1.  Operations and Organization 

Operations and Organization 

Rexahn  Pharmaceuticals,  Inc.  (the  “Company”  or  “Rexahn  Pharmaceuticals”),  a  Delaware 
corporation,  is  a  development  stage  biopharmaceutical  company  dedicated  to  the  discovery, 
development  and  commercialization  of  innovative  treatments  for  cancer,  central  nervous  system 
(“CNS”) disorders, sexual dysfunction and other medical needs. The Company has not yet generated 
commercial sales revenue and has been able to fund its operating losses to date through the sale of 
its common stock, warrants, issuance of long-term debt, and proceeds from reimbursed research and 
development  costs.  The  Company  believes  that  its  existing  cash  and  cash  equivalents  and 
marketable securities will be sufficient to cover its cash flow requirements for 2012. Management 
has  the  capability  of  managing  the  Company’s  operations  within  existing  cash  and  marketable 
securities  available  by  focusing  on  core  research  and  development  activities.  This  may  result  in 
slowing down clinical studies, but will conserve the Company’s cash to allow it to operate for the 
next twelve months. 

Reverse Merger Acquisition 

Pursuant to an Agreement and Plan of Merger by and among Rexahn, Corp (“Rexahn”), Corporate 
Road  Show.Com  Inc.  (“CRS”),  a  New  York  corporation  and  predecessor  corporation  of  the 
Company,  CRS  Merger  Sub,  Inc.,  a  Delaware  corporation  and  wholly  owned  subsidiary  of  CRS 
(“Merger Sub”), CRS Delaware, Inc., a Delaware corporation and wholly owned subsidiary of CRS, 
immediately after giving effect to a 1-for-100 reverse stock split and the reincorporation of CRS as a 
Delaware  corporation  under  the  name  Rexahn  Pharmaceuticals,  Inc.  (“Rexahn  Pharmaceuticals”), 
on  May  13,  2005,  Merger Sub  merged  with  and  into Rexahn,  with  Rexahn  surviving  as  a  wholly 
owned  subsidiary  of  Rexahn  Pharmaceuticals  (the  “Acquisition  Merger”).  In  the  Acquisition 
Merger, (i) each share of the issued and outstanding common stock of Rexahn (other than dissenting 
shares)  was  converted  into  the  right  to  receive  five  shares  of  Rexahn  Pharmaceuticals  common 
stock;  and  (ii)  each  issued,  outstanding  and  unexercised  option  to  purchase  a  share  of  Rexahn 
common  stock  was  converted  into  an  option  to  purchase  five  shares  of  Rexahn  Pharmaceuticals 
common stock. 

Shares  of  Rexahn  Pharmaceuticals  common  stock  issued  in  the  Acquisition  Merger  were  exempt 
from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), 
pursuant  to  Regulation  D  under  the  Securities  Act  and/or  Regulation  S  under  the  Securities  Act. 
These shares of Rexahn Pharmaceuticals common stock are deemed “restricted securities” and bear 
an appropriate restrictive legend indicating that the resale of such shares may be made only pursuant 
to registration under the Securities Act or pursuant to an available exemption from such registration. 

For accounting purposes, the Acquisition Merger was accounted for as a reverse acquisition of CRS 
(legal acquirer) by Rexahn (accounting acquirer).  As a result, following the Acquisition Merger, the 
historical financial statements of Rexahn became the historical financial statements of the Company. 

Merger of Subsidiary 

On  September  29,  2005, the  Company’s  wholly  owned  subsidiary,  Rexahn,  was  merged  with  and 
into the Company and Rexahn’s separate existence was terminated. 

F-10 

 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

2. 

Prior Period Effect of 2009 Restatement 

As disclosed in the Company’s 2010 Annual Report on Form 10-K, Management restated the Company’s 
financial statements to reflect a prior period adjustment effective January 1, 2009, which resulted in a 
decrease to additional paid-in capital of $6,399,805, an increase of the accumulated deficit of $1,092,021, 
and an increase in warrant and put feature on common stock liabilities of $5,307,784.  Management had 
determined that the warrants and anti-dilution make whole provisions, as described in Notes 13 and 14, 
respectively, issued to investors from offerings occurring in December 2007 and March, 2008, were 
misclassified as equity, and should have been treated as liabilities at inception.    

The Company has recorded this adjustment for the years ended December 31, 2008 and 2007 on the 
Statement of Stockholders’ Equity (Deficit) and Comprehensive Loss, as follows: 

Common stock issued-adjustment to 
Additional paid in capital 
     As originally reported 
     Effect of restatement 
     As restated 

Net loss-adjustment to  
Accumulated  deficit  during 
development stage 
     As originally reported 
     Effect of restatement 
     As restated 

the 

For the Year Ended December 31, 

2008 

2007 

Total 

$       899,936      $       6,799,538    

(744,486) 
155,450 

(5,655,319) 
1,144,219 

(6,399,805) 

(4,912,148) 
1,230,347 
(3,681,801) 

(4,304,005) 
(138,326) 
(4,442,331) 

1,092,021 

F-11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

3. 

Summary of Significant Accounting Policies 

a)  Cash and Cash Equivalents 

Cash  and  cash  equivalents  include  cash  on  hand  and  short-term  investments  purchased  with 
remaining maturities of three months or less at acquisition. 

b)  Marketable Securities 

Marketable  securities  are  considered  “available-for-sale”  in  accordance  with  Financial 
Statement Accounting Board (“FASB”) Accounting Standard Codification (“ASC”) 320, “Debt 
and Equity Securities”, and thus are reported at fair value in our accompanying balance sheet, 
with unrealized gains and losses excluded from earnings and reported as a separate component 
of stockholders’ equity.  Realized gains and losses are accounted for on the basis of specific 
identification and are included in other income or expense in the statement of operations.  The 
Company  classifies  such  investments  as  current  on  the  balance  sheet  as  the  investments  are 
readily  marketable  and  available  for  use  in  our  current  operations.    Accumulated  other 
comprehensive  loss  at  December  31,  2011  and  2010  was  $0  and  $2,340  respectively.    The 
Company’s  total  comprehensive  loss  was  $11,342,610,  $14,024,447  and  $2,352,618  for  the 
years ended December 31, 2011, 2010 and 2009, respectively. 

c) 

Equipment 

Equipment is stated at cost less accumulated depreciation. Depreciation, based on the lesser of 
the term of the lease or the estimated useful life of the assets, is provided as follows: 

Furniture and fixtures 
Office equipment 
Lab equipment 
Computer equipment 
Leasehold improvements 

Life  Depreciation Method 
straight line 
straight line 
straight line 
straight line 
straight line 

7 years 
5 years 
5-7 years 
5 years 
3-5 years 

During the year ended December 31, 2010, the Company changed the depreciation method for 
furniture and fixtures, office equipment, and lab equipment from double declining balance to 
straight line as it concluded that the straight line method matched the expense throughout the 
useful  lives  of  the  assets.  The  Company  determined  that  the  impact  of  the  change  in 
depreciation method was immaterial. 

d)  Research and Development  

Research  and  development  costs  are  expensed  as  incurred.    Research  and  development 
expenses  consist  primarily  of  third  party  service  costs  under  research  and  development 
agreements, salaries and related personnel costs, as well as stock compensation related to these 
costs,  costs  to  acquire  pharmaceutical  products  and  product  rights  for  development  and 
amounts paid to contract research organizations, hospitals and laboratories for the provision of 
services and materials for drug development and clinical trials. 

Costs incurred in obtaining the licensing rights to technology in the research and development 
stage  that  have  no  alternative  future  uses  and  are  for  unapproved  product  compounds  are 
expensed as incurred. 

F-12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

3. 

Summary of Significant Accounting Policies (cont’d) 

e)  Use of Estimates 

The  preparation  of  financial  statements  in  conformity  with  accounting  principles  generally 
accepted  in  the  United  States  requires  management  to  make  estimates  and  assumptions  that 
affect the reported amounts of assets and liabilities and the disclosure of contingent assets and 
liabilities  at  the  date  of  the  financial  statements  and  the  reported  amounts  of  revenues  and 
expenses  during  the  reporting  period.    These  estimates  are  based  on  management’s  best 
knowledge  of  current  events  and  actions  the  Company  may  undertake  in  the  future.    Actual 
results may ultimately differ from those estimates.  These estimates are reviewed periodically 
and as adjustments become necessary, they are reported in earnings in the period in which they 
become available.  

f) 

Fair Value of Financial Instruments 

The  carrying  amounts  reported  in  the  accompanying  financial  statements  for  cash  and  cash 
equivalents,  note  receivable,  prepaid  expenses  and  other  current  assets  and  accounts  payable 
and  accrued  expenses  approximate  fair  value  because  of  the  short-term  maturity  of  these 
financial instruments.  The fair values for marketable securities, warrant liabilities and the put 
feature on common stock is discussed in Notes 4, 13, and 14, respectively. 

g) 

Income Taxes 

The  Company  accounts  for  income  taxes  in  accordance  with  ASC  740,  “Income  Taxes”.  
Deferred tax assets and liabilities are recorded for differences between the financial statement 
and tax basis of the assets and liabilities that will result in taxable or deductible amounts in the 
future based on enacted tax laws and rates.  ASC 740 requires that a valuation allowance be 
established when it is more likely than not that all portions of a deferred tax asset will not be 
realized.  A review of all positive and negative evidence needs to be considered, including a 
company’s  current  and  past  performance,  the  market  environment  in  which  the  company 
operates, length of carryback and carryforward periods and existing contracts that will result in 
future  profits.    Income  tax  expense  is  recorded  for  the  amount  of  income  tax  payable  or 
refundable  for  the  period,  increased  or  decreased  by  the  change  in  deferred  tax  assets  and 
liabilities during the period. 

As  a  result  of  the  Company’s  significant  cumulative  losses,  we  determined  that  it  was 
appropriate to establish a valuation allowance for the full amount of our deferred tax assets. 

The  calculation  of  our  tax  liabilities  involves  the  inherent  uncertainty  associated  with  the 
application of complex tax laws.  We are subject to examination by various taxing authorities.  
We believe that as a result of our loss carryforward sustained to date, any examination would 
result in a reduction of our net operating losses rather than a tax liability.  As such, we have not 
provided for additional taxes estimated under ASC 740.  

F-13 

 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

3. 

Summary of Significant Accounting Policies (cont’d) 

h)   Loss Per Share 

The Company accounts for loss per share pursuant to ASC 260, “Earnings per Share”, which 
requires disclosure on the financial statements of “basic” and “diluted” loss per share.  Basic 
loss per share is computed by dividing net loss by the weighted average number of common 
shares outstanding for the year.  Diluted loss per share is computed by dividing net loss by the 
weighted  average  number  of  common  shares  outstanding  plus  potentially  dilutive  securities 
outstanding  for  each  year.  Potentially  dilutive  securities  include  stock  options  and  warrants.  
Diluted loss per share for the years ended December 31, 2011, 2010 and 2009 is the same as 
basic loss per share due to the fact that the Company incurred losses for all periods presented 
and the inclusion of common share equivalents would be antidilutive. The following securities, 
presented  on  a  common  share  equivalent  basis,  have  been  excluded  from  the  per  share 
computations: 

Stock Options 

Warrants 

i) 

Stock-Based Compensation 

Year Ended December 31 

2011 

2010 

2009 

7,646,795 

8,076,795 

7,715,795 

8,676,142 

5,624,583 

8,575,243 

In  accordance  with  ASC  718,  “Stock  Compensation,”  compensation  costs  related  to  share-
based  payment  transactions,  including  employee  stock  options,  are  to  be  recognized  in  the 
financial  statements.  In  addition,  the  Company  adheres  to  the  guidance  set  forth  within 
Securities  and  Exchange  Commission  (“SEC”)  Staff  Accounting  Bulletin  (“SAB”)  No.  107, 
which provides the Staff’s views regarding the interaction between ASC 718 and certain SEC 
rules and regulations, and provides interpretations with respect to the valuation of share-based 
payments for public companies.  

j) 

Impairment of Long-Lived Assets 

In  accordance  with  ASC  360,  “Property,  Plant  and  Equipment,”  long-lived  assets  to  be  held 
and  used  are  analyzed  for  impairment  whenever  events  or  changes  in  circumstances  indicate 
that  the  related  carrying  amounts  may  not  be  recoverable.    The  Company  evaluates  at  each 
balance  sheet  date  whether  events  and  circumstances  have  occurred  that  indicate  possible 
impairment.    If  there  are  indications  of  impairment,  the  Company  uses  future  undiscounted 
cash flows of the related asset or asset grouping over the remaining life in measuring whether 
the  assets  are  recoverable.    In  the  event  such  cash  flows  are  not  expected  to  be  sufficient  to 
recover  the  recorded  asset  values,  the  assets  are  written  down  to  their  estimated  fair  value.  
Management determined that an impairment of intangible assets occurred in 2009 and wrote-
off  the  assets  remaining  carrying  value  of  $286,132,  which  is  reflected  in  research  and 
development expenses in the Company’s Statement of Operations for the year ended December 
31, 2009. 

F-14 

 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

3. 

Summary of Significant Accounting Policies (cont’d) 

       k)      Concentration of Credit Risk 

The  Company  does  not  have  significant  off-balance  sheet  risk  or  credit  concentration.    The 
Company  maintains cash and short-term investments  with major financial institutions.  From 
time to time the Company has funds on deposit with commercial banks that exceed federally 
insured limits.  The balances are insured by either the Federal Deposit Insurance Corporation 
or the Securities Investor Protection Corporation up to $250,000. At December 31, 2011, the 
Company’s uninsured cash balance was $10,543,447.  

       l)      Reclassification 

The  Company  has  reclassified  previously  reported  amortization  of  Rexgene’s  research  and 
development  arrangement,  as  disclosed  in  Note  9,  “Deferred  Research  and  Development 
Arrangement”,  from  revenue  to  a  reduction  in  research  and  development  expenses  in  the 
statement of operations.  The reclassification had no effect on the Company’s balance sheets, 
net loss, or cash flows from operations. 

m)    Recent Accounting Pronouncements Affecting the Company 

Fair Value Measurements 

In  May  2011,  the  FASB  issued  Accounting  Standards  Update  2011-04  to  ASC  820,  “Fair 
Value Measurements and Disclosures” (“ASC 820”) which amends the disclosure requirements 
for  fair  value  instruments.    The  new  disclosures  required  include  disclosure  regarding  the 
sensitivity  of  the  fair  value  measurement  to  changes  in  unobservable  inputs,  and  the 
interrelationships  between  those  unobservable  inputs.    The  guidance  is  effective  for  the 
Company  for  fiscal  years  and  interim  periods  beginning  on  or  after  December  15,  2011.  
Management  currently  believes  that  the  adoption  of  this  guidance  will  not  have  a  material 
impact on the Company’s financial statements. 

Comprehensive Income 

In  June  2011,  the  FASB  issued  authoritative  guidance  for  presentation  and  disclosure  of 
comprehensive income in the financial statements.  Under the new guidance, a company may 
no longer present the components of other comprehensive income as part of the statement of 
changes in the statement of stockholders’ equity, and instead must present the components of 
comprehensive  income  either  in  the  statement  of  operations  or  in  a  separate  statement 
immediately following the Statement of Operations.   In addition, reclassification adjustments 
between comprehensive income and net income must be disclosed on the financial statements.  
This guidance is effective for the Company for fiscal years and interim periods beginning on or 
after  December  15,  2011.   Management  currently  believes  that  the  adoption  of this  guidance 
will not have a material impact on the Company’s financial statements. 

F-15 

 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

4.  Marketable Securities  

Cost and fair value of the Company’s marketable securities are as follows: 

Securities available-for-sale 
     December 31, 2011: 

Cost 
Basis 

Gross 
Unrealized 
Losses 

Fair 
Value 

State and municipal obligations 

  $  1,950,000 

  $ 

- 

  $  1,950,000 

     December 31, 2010: 

State and municipal obligations 

  $  2,453,960 

  $ 

(2,340) 

  $  2,451,620 

Amortized  cost  and  fair  value  at  December  31,  2011  by  contractual  maturity  are  shown  below.  
Expected maturities will differ from contractual maturities because the Company may redeem certain 
securities at par. 

Maturity 
10 years or more 

Cost 
Basis 
  $  1,950,000 

Fair 
Value 
  $  1,950,000 

5.  Prepaid Expenses and Other Current Assets 

Deposits on contracts 
Other assets 

December 31, 
2011 

December 31, 
2010 

  $ 

163,317 
169,854 

  $ 

564,074 
142,575 

  $ 

333,171 

  $ 

706,649 

Deposits on contracts consist of deposits on research and development contracts for services that have 
not  yet  been  incurred.    Other  assets  include  prepaid  general  and  administrative  expenses  such  as 
insurance, rent, and consulting services. 

F-16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

6.   Note Receivable 

On June 16, 2010, Amarex, LLC (“Amarex”) executed a note payable to the Company in settlement 
of a contract dispute.  The Company settled the case with Amarex for $100,000 less a balance owed 
of  $43,953.    The  principal  sum  of  the  note  was  $56,047,  and  is  included  in  other  income  in  the 
Company’s statement of operations.  Monthly payments of $2,335 began on September 1, 2010 and 
will continue until August 1, 2012 at which time the balance is expected to be paid in full.  The note 
does not bear interest. Pursuant to the note, Amarex shall pay a late charge of five percent (5%) of 
any past due installment payments if any installment payment is not paid within 10 days of its due 
date.  As of December 31, 2011, all payments were made as scheduled. 

As of December 31, 2011, the principal amortization of the note is shown below: 

Principal Amortization 
Within 1 year 

7.  Equipment, Net   

Furniture and fixtures 
Office equipment 
Lab and computer equipment 
Leasehold improvements 

Less Accumulated depreciation 

Net carrying amount 

Expected 
Payment 

  $ 

18,682 

 December 31, 

2011 

December 31, 
2010 

 $       34,200 
      81,074 
    430,261 
    119,841 

$      32,169 
  77,032 
429,415 
110,713 

       665,376 
      (570,834) 

     649,329 
    (525,764) 

  $    94,542 

  $  123,565 

Depreciation  expense  was $45,070,  $50,659  and  $41,604  for the  years  ended  December  31,  2011, 
2010 and 2009, respectively. 

F-17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

8.  Accounts Payable and Accrued Expenses 

Trade payables 
Accrued expenses 
Accrued research and development contract costs 
Payroll liabilities 

  December 31,  December 31, 

2011 

2010 

  $ 

555,613 
50,401 
449,775 
129,616 

  $ 

489,527 
18,466 
1,239,233 
73,674 

  $  1,185,405 

  $  1,820,900 

9.  Deferred Research and Development Arrangement 

In 2003, the Company entered into a collaborative research agreement with Rexgene Biotech Co., 
Ltd.  (“Rexgene”),  a  shareholder.    Rexgene  is  engaged  in  the  development  of  pharmaceutical 
products in Asia and has agreed to assist the Company with the research, development and clinical 
trials  necessary  for  registration  of  the  Company’s  drug  candidate,  Archexin,  in  Asia.    This 
agreement provides Rexgene with exclusive rights to license, sublicense, make, have made, use, sell 
and import Archexin in Asia.  In accordance with the agreement, Rexgene paid the Company a one-
time fee of $1,500,000 in 2003.  The agreement terminates at the later of 20 years or the term of the 
patent.  The amortization reduces research and development expenses for the periods presented.   

The  Company  is  using  20 years  as  its  basis  for recognition and accordingly  $75,000  was  reduced 
from research and development expenses for the years ended December 31, 2011, 2010 and 2009.  
The remaining $825,000 and $900,000 at December 31, 2011 and 2010, respectively, is reflected as 
deferred  research  and  development  arrangement  on  the  balance  sheet.    The  contribution  is  being 
used in the cooperative funding of the costs of development of Archexin.  Royalties of 3% of net 
sales  of  licensed  products  will  become  payable  to  the  Company  on  a  quarterly  basis  once 
commercial sales of Archexin begin. The product is still under development and commercial sales 
are not expected to begin until at least 2013.  Under the terms of the agreement, Rexgene does not 
receive royalties on the Company net sales outside Asia. 

F-18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
   
   
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

10.  Other Liabilities 

Deferred Lease Incentive 

On June 29, 2009, the Company entered into a five year office lease agreement as discussed in note 
16.  The lessor agreed to grant a leasehold improvement allowance of $100,000 to the Company to 
be  used for  the construction  cost of improvements,  architectural  and  engineering  fees,  government 
agency  plan  check,  permit  and  other  fees,  sales  and  use  taxes,  testing  and  inspection  costs, 
construction  fees  and  telephone  and  data  cabling  and  wiring  in  the  premises.    The  full  amount  of 
leasehold improvement allowance had been used up by the Company by December 31, 2009.  The 
Company accounts for the benefit of the leasehold improvement allowance on a straight line basis as 
a reduction of rental expense over the 5 year lease term. 

The following table sets forth the deferred lease incentive: 

Deferred lease incentive 
Less accumulated amortization 

Balance  

Deferred Office Lease Expense 

December 31,  December 31, 

2011 

2010 

$   100,000 
    (50,000) 

$   100,000 
    (30,000) 

$    50,000       

$     70,000       

The  office  lease  agreement,  discussed  above,  requires  an  initial  annual  base  rent  of  $76,524  with 
annual increases over the next five years. The Company recognizes rental expense on a straight-line 
basis over the term of the lease, which resulted in a deferred rent liability of $54,388 and $63,117 as 
of December 31, 2011, and 2010, respectively. 

F-19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock  

The following transactions occurred from March 19, 2001 (inception) to December 31, 2011: 

a)  On May 10, 2001 the Company issued 3,600,000 shares of common stock to the Company’s 

founders for $1. 

b)  On August 10, 2001 the Company issued:  

i) 

1,208,332  shares  of  common  stock  to  the  directors  of  the  Company  for  cash  of 
$1,450,000. 

ii) 

958,334 shares of common stock to Rexgene for cash of $550,000. 

iii)  360,000 shares of common stock in a private placement to individual investors for cash 

of $1,080,000. 

These share purchases were negotiated by the parties at various dates prior to the August 10, 
2001 share issuance date. 

c)  On  October  10,  2001  the  Company  issued  400,000  shares  of  common  stock  to  Chong  Kun 
Dang  Pharmaceutical  Corp.  (“CKD”)  for  cash  of  $479,991  and  400,000  shares  of  common 
stock to an individual investor for cash of $479,991. 

d)  On October 10, 2001 the Company issued 200,000 shares of common stock to CKD for cash of 

$479,985. 

e) 

f) 

Since inception, the Company’s founders have transferred 800,000 shares of the common stock 
described in a) to officers and directors of the Company. 

In July 2003, the shareholders described in b)(iii) and e) transferred an aggregate of 1,268,332 
shares of common stock to a voting trust.  The trust allows for the unified voting of the stock 
by the trustees.  The appointed trustees are senior management of the Company who, together 
with their existing shares, control a majority of the voting power of the Company. 

g)  On  August  20,  2003  the  Company  issued  500,000  shares  of  common  stock  to  KT&G 

Corporation for cash of $2,000,000. 

h)  On October 29, 2004, an option holder exercised options to purchase shares of the Company’s 
common stock for cash of $1,800 and the Company issued an aggregate of 1,500 shares. 

F-20 

 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

i) 

Pursuant to the agreement and plan of merger which occurred on May 13, 2005, (i) each share 
of  the  issued  and  outstanding  common  stock  of  Rexahn,  Corp  (“Rexahn”)  (other  than 
dissenting  shares)  was  converted  into  the  right  to  receive  five  shares  of  Rexahn 
Pharmaceuticals  common  stock;  (ii)  each  issued,  outstanding  and  unexercised  option  to 
purchase  a  share  of  Rexahn  common  stock  was  converted  into  an  option  to  purchase  five 
shares of Rexahn Pharmaceuticals common stock and (iii) the par value of Rexahn’s common 
stock  was  adjusted  to  reflect  the  par  value  of  Corporate  Road  Show    Com  Inc.  (“CRS”) 
common  stock.    In  the  acquisition  merger,  289,780,000  CRS  pre-reverse  stock  split  shares 
were converted into 2,897,802 post-reverse stock split Rexahn Pharmaceuticals shares, and an 
additional  500,000  post-reverse  stock  split  Rexahn  Pharmaceuticals  shares  were  issued  to  a 
former  executive  of  CRS.    All  shares  and  earnings  per  share  information  have  been 
retroactively restated in these financial statements. 

j)  On August 8, 2005, the Company issued, in a transaction exempt from registration under the 
Securities Act, 4,175,000 shares of common stock at a purchase price of $2.00 per share. 

k)  On  October  3,  2005,  the  Company  issued  7,000  shares  of  common  stock  for  $21,877  and 

$7,500 cash in exchange for services. 

l)  On  December  2,  2005,  the  holders  of  a  convertible  note,  representing  $1,300,000  aggregate 
principal amount, exercised their option to convert the entire principal amount of the note into 
the  Company’s  common  stock.    Based  on  a  $2.00  per  share  conversion  price,  the  holders 
received an aggregate of 650,000 shares. 

m)  On December 27, 2005, option holders exercised options to purchase shares of the Company’s 
common stock for cash of $9,600 and the Company issued an aggregate of 40,000 shares. 

n)  On February 22, 2006, an option holder exercised options to purchase shares of the Company’s 
common stock for cash of $1,200 and the Company issued an aggregate of 5,000 shares. 

o)  On  April  12,  2006,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $3,409 and the Company issued an aggregate of 14,205 shares.  On 
the same date, the Company agreed to repurchase common stock from the option holder based 
on the then market price for treasury in exchange for the aggregate purchase price of $28,410 
in cash.   

p)  On  May  13,  2006,  holders  of  the  $3,850,000 convertible  notes issued on  February  28, 2005, 
exercised  their  rights  to  convert  the  entire  principal  amount  of  the  notes  into  shares  of  the 
Company’s common stock.   Based on a $1.00 per share conversion price, the Company issued 
3,850,000 shares of common stock in connection with the conversion. 

q)  On October 9, 2006, an option holder exercised options to purchase shares of the Company’s 
common stock for cash of $2,400 and the Company issued an aggregate of 10,000 shares.   

r)  On  November  19,  2006,  an  option  holder  exercised  options  to  purchase  shares  of  the 
Company’s common stock for cash of $1,800 and the Company issued an aggregate of 7,500 
shares. 

F-21 

 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

s)  On  December  19,  2006,  an  option  holder  exercised  options  to  purchase  shares  of  the 
Company’s common stock for cash of $6,000 and the Company issued an aggregate of 25,000 
shares. 

t)  On  April  18,  2007,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $14,400 and the Company issued an aggregate of 18,000 shares. 

u)  On  July  23,  2007,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $12,000 and the Company issued an aggregate of 15,000 shares. 

v)  On  September  27,  2007,  an  option  holder  exercised  options  to  purchase  shares  of  the 
Company’s common stock for cash of $15,600 and the Company issued an aggregate of 19,500 
shares. 

w)  On December 18, 2007, the Company issued 4,857,159 units at a price $1.40 per share for total 
gross  proceeds  of  $6,800,023.   Investors  also  were  issued  one  warrant  for  every  five  shares 
purchased.    One  warrant  will  entitle  the  holder  to  purchase  an  additional  share  of  common 
stock at a purchase price of $1.80 at any time over a period of three years from the date of the 
closing.  The  Company  has  recorded  the  warrants  as  liabilities  at  fair  value  as  discussed  in 
footnote 13. Private placement closing costs of $139,675 were recorded as a reduction of the 
issuance  proceeds.    Private  placement  costs  also  consist  of  107,144  warrants,  valued  at 
$138,326,  and  were  recorded  as  a  financing  expense.  The  Company  extended  anti-dilutive 
protection to the investors. The anti-dilution protection provision is structured in a way that is 
designed to protect a holder’s position from being diluted and contains a price protection based 
on  a  mathematical  calculation,  and  is  recorded  as  a  liability  at  fair  value,  as  discussed  in 
footnote 14.   The Company revalues these liabilities each reporting period, with the unrealized 
gain (loss) recorded as other income (expense). 

A summary of the allocation of the proceeds of the offering is shown below: 

Gross Proceeds: 

Allocated to liabilities: 
     Warrant liabilities 
     Put feature on common stock 
Total allocated to liabilities 

Allocated to equity: 
    Common stock and additional paid-in capital 

Allocated to expense: 
     Financing expense 

Total allocated gross proceeds: 

$   6,800,023 

       1,392,476 
4,401,169 
5,793,645 

1,144,704 

(138,326) 

$   6,800,023 

F-22 

 
 
 
 
  
 
 
 
 
 
           
 
 
 
      
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

x)  On  December  27,  2007,  an  option  holder  exercised  options  to  purchase  shares  of  the 
Company’s common stock for cash of $18,000 and the Company issued an aggregate of 75,000 
shares. 

y)  On  March  20,  2008,  the  Company  issued  642,858  units  consisting  of  one  share  of  the 
Company’s  common  stock  and  one  warrant  for  every  five  common  shares  purchased  in  a 
private  placement  at  a  price  of  $1.40  per  unit  for  total  gross  proceeds  of  $900,001.    One 
warrant will entitle the holder to purchase an additional share of common stock at a price of 
$1.80 at any time over a period of three years from the date of the private placement, and is 
recorded  as  a  liability  at  fair  value.    The  Company  extended  anti-dilution  protection  to 
investors,  and  the  provision  is  structured  in  a  way  that  is  designed  to  protect  the  holder’s 
position from being diluted and contains a price based on a mathematical computation. 

A summary of the allocation of the proceeds of the offering is shown below:  

Gross Proceeds: 

Allocated to liabilities: 
     Warrant liabilities 

     Put feature on common stock 
Total allocated to liabilities 

Allocated  to  common  stock  and  additional  paid-in 

capital 

$   900,001 

190,917 
553,569 
744,486 

155,515 

Total allocated gross proceeds: 

$   900,001 

z)  On  May  30,  2008,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $7,200 and the Company issued an aggregate of 30,000 shares. 

aa)  On  June  2,  2008,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $12,000 and the Company issued an aggregate of 50,000 shares. 

ab)  On  June  30,  2008,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $12,000 and the Company issued an aggregate of 10,000 shares. 

F-23 

 
 
 
 
 
 
 
           
       
      
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

ac)     On June  5,  2009  the Company  closed  on  a  purchase  agreement to issue  2,857,143 shares  of 
common stock at a price of $1.05 per share to an institutional investor for total gross proceeds 
of $3,000,000 and incurred $289,090 of stock issuance costs.  The investor was also issued: 

4)  Series I warrants to purchase 2,222,222 shares of common stock at a purchase price 

of $1.05 per share at any time before September 3, 2009; 

5)  Series II warrants to purchase 1,866,666 shares of common stock at a purchase price 

of $1.25 per share at any time from December 3, 2009 to June 5, 2012; and 

6)  Series III warrants to purchase 1,555,555 shares of common stock at a purchase price 

of $1.50 per share at any time from December 3, 2009 to June 5, 2014. 

The  closing  costs  included  142,857  warrants  valued  at  $122,257  and  were  recorded  as  a 
financing  expense.  All warrants issued from this purchase agreement are recorded as liabilities 
at fair value. 

The Company incurred a derivative loss upon issuance of these warrants, as the fair value of the  
warrants at inception was greater than the proceeds received from the investor.  The derivative 
loss was combined with unrealized gains (losses) for the year ended December 31, 2009. 

        A summary of the allocation of the proceeds of the offering is shown below:  

Gross Proceeds: 

Allocated to liabilities: 
    Warrant liabilities 

Allocated to equity: 
    Common stock and additional paid-in capital 

Allocated to expense: 
    Financing expense 
    Derivative loss at inception 
Total allocated to expense 

Total allocated gross proceeds: 

$   3,000,000 

       3,451,194 

- 

(122,257) 
(328,937) 
(451,194) 

$   3,000,000 

ad)  On  June  9,  2009,  the  Company  issued  1,833,341  shares  of  common  stock  and  862,246 
warrants  to  purchase  common  stock  at  a  purchase  price  of  $1.05  per  share  to  existing 
stockholders  pursuant  to  the  anti-dilution  protection  provisions  of  the  private  placements 
transacted  on  December  18,  2007  and  March  20,  2008.    The  fair  value  of  the  additional 
warrants issued was approximately $422,300.   

F-24 

 
 
 
 
 
 
 
 
 
           
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

ae)  On  September  4,  2009,  an  option  holder  exercised  options  to  purchase  shares  of  the 
Company’s common stock for cash of $3,600 and the Company issued an aggregate of 15,000 
shares. 

af)  On September 21, 2009, the Company issued 3,102,837 shares of common stock at a purchase 
price  of  $1.13  per  share  to  an  institutional  investor  for  net  proceeds  of  $3,371,340,  which 
includes $128,659 of stock issuance costs.  

ag)  On October 23, 2009, the Company closed on a purchase agreement to issue 6,072,383 shares 
of common stock at a price of $0.82 per share to five institutional investors for gross proceeds 
of  $5,000,000,  which  includes  $351,928  of  stock  issuance  costs.    The  investors  were  also 
issued warrants to purchase 2,125,334 shares of common stock at a purchase price of $1.00 per 
share,  exercisable  on  or  after  the  date  of  delivery  until  the  five-year  anniversary,  and  were 
recorded  as  liabilities  at  fair  value.  The  closing  costs  included  245,932  warrants  valued  at 
$101,693 and were recorded as a financing expense.       

        A summary of the allocation of the proceeds of the offering is shown below:  

Gross Proceeds: 

Allocated to liabilities: 
     Warrant liabilities 

Allocated to equity: 
    Common  stock  and  additional  paid-in 
capital 

Allocated to expense: 
    Financing expense 

Total allocated gross proceeds: 

$   5,000,000 

1,114,627 

3,987,066 

(101,693) 

$   5,000,000 

ah)  On  October  23,  2009,  the  Company  issued  2,018,143  shares  of  common  stock  and  569,502 
warrants  to  purchase  common  stock  at  a  purchase  price  of  $0.82  per  share  to  existing 
stockholders  pursuant  to  anti-dilution  protection  provisions  of  the  private  placements 
transacted  on  December  24,  2007  and  March  20,  2008.  The  fair  value  of  the  additional 
warrants issued was of approximately $476,200. 

F-25 

 
 
 
 
 
 
 
 
 
           
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

ai)  On February 12, 2010, the Company entered into two consulting agreements pursuant to which 
the Company issued 300,000 shares of common stock upon the execution of the agreements.  
Upon the extension of the term, 200,000 shares of common stock for each month will be issued 
until the termination of services. 

The  following  table  lists  the  issuances  of  shares  by  the  Company  under  the  consulting 
agreement: 

Date of Issuance 
February 12, 2010 
May 24, 2010 
June 15, 2010 
August 2, 2010 
September 21, 2010 
October 21, 2010 
November 11, 2010 

Number of 
Shares Issued 
300,000 
200,000 
200,000 
400,000 
200,000 
200,000 
200,000 

Total 

1,700,000 

Market Value 
Per Share  

Total Market Value of 
Share Issuance 

$        1.22 
1.40 
1.15 
1.37 
1.20 
1.16 
1.06 

$       366,000 
280,000 
230,000 
548,000 
240,000 
232,000 
212,000 

$   2,108,000 

The market value of these shares was recorded as an expense and is reflected in general and 
administrative  expenses  in  the  Company’s  statement  of  operations.    The  agreements  were 
terminated by the Company on November 11, 2010. 

aj) 

In  March  2010,  warrant  holders  exercised  warrants  to  purchase  shares  of  the  Company’s 
common  stock  for  cash  of  $1,297,001  and  the  Company  issued  an  aggregate  of  1,197,001 
shares.   

ak)  In March 2010, option holders exercised options to purchase shares of the Company’s common 

stock for cash of $21,240 and the Company issued an aggregate of 48,000 shares. 

al) 

In April 2010, warrant holders exercised their warrants to purchase shares of the Company’s 
common  stock  for  cash  of  $1,966,375  and  the  Company  issued  an  aggregate  of  1,595,825 
shares.   

am)  On  April  20,  2010,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 
common stock for cash of $86,000 and the Company issued an aggregate of 107,500 shares. 

an)  In  May  2010,  warrant  holders  exercised  890,051  cashless  warrants  to  obtain  shares  of  the 

Company’s common stock and the Company issued an aggregate of 547,674 shares. 

F-26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

ao)  On June 30, 2010, the Company entered into a purchase agreement to issue 6,666,667 shares 
of common stock at a price of $1.50 per share to investors for gross proceeds of $10,000,000, 
which includes $681,773 of stock issuance costs.  The investors were also issued warrants to 
purchase  2,000,000  shares  of  common  stock  at  an  exercise  price  of  $1.90  per  share.    The 
warrants  became  immediately  exercisable  on  the  date  of  delivery  until  the  four-year 
anniversary of the date of issuance.  These warrants were valued at $1,800,800 and recorded as 
warrant liabilities.  The closing costs included 200,000 warrants valued at $180,080 and were 
recorded as a financing expense.   

Gross Proceeds: 

Allocated to liabilities: 
     Warrant liabilities 

Allocated to equity: 
    Common stock and additional paid-in capital 

Allocated to expense: 
    Financing expense 

Total allocated gross proceeds: 

$  10,000,000 

      1,980,880 

8,199,200 

(180,080) 

$  10,000,000 

ap)   In November 2010, warrant holders exercised 936,883 cashless warrants to obtain shares of the 

Company’s common stock and the Company issued an aggregate of 247,491 shares. 

aq)    In December 2010, warrant holders exercised 530,900 cashless warrants to obtain shares of the 

Company’s common stock and the Company issued an aggregate of 126,195 shares. 

ar)  On  January  19,  2011, the Company  issued  2,334,515  shares  of  common  stock  at  a  purchase 
price  of  $1.69  per  share  to  an  institutional  investor  for  net  proceeds  of  $3,926,397,  which 
includes $23,603 of stock issuance costs.  

as)  On  February  15,  2011,  a  warrant  holder  exercised  warrants  to  purchase  shares  of  the 
Company’s common stock for cash of $215,104 and the Company issued 209,042 shares. 

at)  On February 28, 2011, an option holder exercised options to purchase shares of the Company’s 

common stock for cash of $6,000 and the Company issued 25,000 shares. 

au)  On March 11, 2011, an option holder exercised options to purchase shares of the Company’s 

common stock for cash of $12,000 and the Company issued 50,000 shares. 

av)  On  March  28,  2011,  warrant  holders  exercised  their  warrants  to  purchase  shares  of  the 
Company’s common stock for cash of $102,857 and the Company issued 124,917 shares. 

F-27 

 
 
 
 
 
 
 
 
 
 
           
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

11.   Common Stock (cont’d) 

aw)  On March 31, 2011, the Company closed on a purchase agreement to issue 8,333,333 shares of 
common stock at a price of $1.20 per share to five institutional investors for gross proceeds of 
$10,000,000, which includes $706,124 of cash stock issuance costs.  The investors were also 
issued warrants to purchase 3,333,333 shares of common stock at a purchase price of $1.50 per 
share, exercisable on or after six months after the closing date until the five-year anniversary of 
the  initial  exercise  date,  and  were  recorded  as  liabilities  at  fair  value.  The  closing  costs 
included 208,333 warrants valued at $97,667 and were recorded as a financing expense.       

        A summary of the allocation of the proceeds of the offering is shown below:  

Gross Proceeds: 

Allocated to liabilities: 
     Warrant liabilities 

Allocated to equity: 
    Common  stock  and  additional  paid-in 
capital 

Allocated to expense: 
    Financing expense 

Total allocated gross proceeds: 

$  10,000,000 

      2,924,333 

7,173,334 

(97,667) 

$  10,000,000 

ax)  In September 2011, an option holder exercised options to purchase shares of the Company’s 

common stock for cash of $22,040 and the Company issued 28,000 shares. 

ay)  In  October  2011,  an  option  holder  exercised  options  to  purchase  shares  of  the  Company’s 

common stock for cash of $19,200 and the Company issued 80,000 shares. 

F-28 

 
 
 
 
 
 
 
 
 
           
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

12.  Stock-Based Compensation 

On August 5, 2003, the Company established a stock option plan (the “Plan”). Under the Plan, the 
Company grants stock options to key employees, directors and consultants of the Company. For all 
grants  prior  to  September  12,  2005  and  grants  to  employees  of  the  Company  after  September  12, 
2005, the vesting period is 30% on the first anniversary of the grant date, an additional 30% on the 
second anniversary and the remaining 40% on the third anniversary. Options expire between five and 
ten years from the date of grant. 

For grants to non-employee consultants of the Company after September 12, 2005, the vesting period 
is between one to three years, subject to the fulfillment of certain conditions in the individual stock 
option grant agreements, or 100% upon the occurrence of certain events specified in the individual 
stock option grant agreements. Options authorized for issuance under the Plan total 17,000,000 after 
giving effect to an amendment to the Plan approved at the Annual Meeting of the Stockholders of the 
Company  on  June  2,  2006.    At  December  31,  2011,  8,673,000  shares  of  common  stock  were 
available for issuance. 

Prior  to  adoption  of  the  Plan,  the  Company  made  restricted  stock  grants.  During  2003  all  existing 
restricted stock grants were converted to stock options. The converted options maintained the same 
full vesting period as the original restricted stock grants. 

Accounting for Employee Awards 

The Company’s results of operations for the years ended December 31, 2011, 2010 and 2009 include 
share-based  employee  compensation  expense 
totaling  $597,637,  $470,366,  and  $565,150 
respectively.  Such  amounts  have  been  included  in  the  Statement  of  Operations  in  general  and 
administrative and research and development expenses. No income tax benefit has been recognized 
in  the  Statement  of  Operations  for  share-based  compensation  arrangements  as  the  Company  has 
provided for a 100% valuation allowance on its deferred tax assets. 

Employee  stock  option  compensation  expense  is  the  estimated  fair  value  of  options  granted 
amortized on a straight-line basis over the requisite vesting service period for the entire portion of 
the award.  

Accounting for Non-Employee Awards 

Stock  compensation  expenses  related  to  non-employee  options  were  $40,970,  $114,291  and 
$(67,619) for the years ended December 31, 2011, 2010 and 2009, respectively. Such amounts have 
been  included  in  the  Statement  of  Operations  in  general  and  administrative  and  research  and 
development expenses. 

F-29 

 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

12.  Stock-Based Compensation (cont’d) 

Summary of Stock Compensation Expense Recognized 

Total stock-based compensation recognized by the Company in the years ended December 31, 2011, 
2010 and 2009, and the period from inception (March 19, 2001) to December 31, 2011, all of which 
relates to stock options is as follows: 

Year Ended December 31, 
2010 

2009 

2011 

Statement of operations line item: 
General and administrative: 

Payroll 
Consulting and other professional 

fees 

Research and development: 

  $  501,884 

  $  393,425 
26,566                93,581                

  $  443,013 
(67,644) 

Inception 
(March 19, 2001) 
to 
December 31 
2011 

$       2,495,400 
786,523 

Payroll 
Consulting and other professional 

  95,753 
  14,404 

  76,941 
  20,710 

  122,137 
  25 

972,049 
1,323,657 

fees 

Total 

Summary of Stock Option Transactions 

  $  638,607 

  $  584,657 

  $  497,531 

$      5,577,629 

There  were  a total  of  450,000  stock  options  granted with  exercise  prices  ranging  from  $0.38-1.84, 
fair value on the grant date of $425,320 and a weighted average grant date fair value of $0.95 during 
the  year  ended  December  31,  2011.    There  were  a  total  of  725,000  stock  options  granted  with 
exercise prices ranging from $1.17-$1.33, fair value on the date of grant of $616,000, and a weighted 
average grant date fair value of $0.85 during the year ended December 31, 2010.  A total of 180,000 
stock options were granted with exercise prices ranging from $0.73 - $1.28, grant date fair value of 
$134,917, and a weighted average grant date fair value of $0.75 during the year ended December 31, 
2009.  The fair value of options at the date of grant was estimated using the Black-Scholes option 
pricing model. The expected volatility is based upon historical volatility of the Company’s stock. The 
expected term is based upon the simplified method as allowed under SAB 107. 

F-30 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

12.  Stock-Based Compensation (cont’d) 

        The assumptions made in calculating the fair values of options are as follows:  

For the Year Ended December 31, 
2010 

2009 

2011 

Black Scholes weighted average assumptions: 

     Expected Dividend Yield 

     Expected volatility 

     Risk free interest rate 

     Expected term (in years) 

0% 

0% 

0% 

96-101% 

103-107% 

100-108% 

0.11-2.29% 

0.26-2.40% 

0.51-2.55% 

5 Years 

1-5 Years 

1-5 Years 

       The following table summarizes the employee and non-employee share-based transactions: 

2011 

2010 

Shares Subject 
to Options 

Weighted Avg. 
Exercise Prices 

Shares Subject    
to Options 

Weighted Avg. 
Exercise Prices 

Outstanding at 
January 1 
Granted 
Exercised 
Cancelled 

8,076,795 
450,000 
(183,000) 
(697,000) 

Outstanding at December 31 

7,646,795  

$ 
$ 
$ 
$ 

$ 

1.01 
1.28 
0.32 
0.91 

1.05 

7,715,795 
725,000 
(155,500) 
(208,500) 

8,076,795  

$ 
$ 
$ 
$ 

$ 

0.98 
1.26 
0.68 
1.19 

1.01 

The  following  table  summarizes  information  about  stock  options  outstanding  as  of  December  31, 
2011 and 2010: 

Shares Subject to 
Options 

Weighted Avg. 
Exercise Prices 

Weighted 
Average 
Remaining 
Contractual Term 

Aggregate 
Intrinsic Value 

7,646,795 

$ 

1.05 

4.8 years 

$  83,611 

6,911,795 

$ 

1.02 

4.4 years 

$  83,611 

8,076,795 

$     1.01 

5.4 years 

$  2,198,790 

6,762,795 

$     1.00 

4.8 years 

$  2,023,980 

Outstanding at 
December 31, 2011 

Exercisable at 
December 31, 2011 

Outstanding at 
December 31, 2010 

Exercisable at 
December 31, 2010 

F-31 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

12.  Stock-Based Compensation (cont’d) 

The total intrinsic value of the options exercised was $163,450, $239,560 and $9,300, for the years 
ended  December  31,  2011,  2010  and  2009,  respectively.    The  weighted  average  fair  value  of  the 
vested options was $0.70, $0.76 and $0.54 for the years ended December 31, 2011, 2010, and 2009, 
respectively.  

A summary of the Company’s unvested shares as of December 31, 2011 and changes during the year 
ended December 31, 2011 is presented below: 

Unvested at January 1, 2011 
Granted 
Vested 
Cancelled 

Unvested at December 31, 2011 

2011 

Subject to 
Options 

  1,314,000 
  450,000 
(938,000) 
(91,000) 

 735,000 

Weighted 
Average Fair 
Value at Grant 
Date 

$ 
$ 
$ 
$ 

$ 

0.76 
0.95 
0.70 
0.89 

0.92 

As  of  December  31,  2011  and  2010,  there  was  $397,593  and  $685,636  of  total  unrecognized 
compensation cost, related to all unvested stock options, which is expected to be recognized over a 
weighted average vesting period of 1.6 years and 1.4 years, respectively.   

F-32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

13. Warrants  

As at December 31, 2011, warrants to purchase 8,676,142 shares were outstanding, having exercise 
prices ranging from $1.00 to $1.90 and expiration dates ranging from August 8, 2013 and September 
30, 2016.    

2011 

2010 

Balance at January 1 
Issued during the period 
Exercised during the period 
Expired during the period 

Number of 
warrants 

Weighted average 
exercise price 
 1.48  
  1.50 
0.95 
0.82 

5,624,583           $  
$ 
3,541,666     
$ 
(333,959) 
$ 
(156,148) 

Number of 
warrants 
8,575,243 
  2,200,000 
(5,150,660) 
- 

Weighted average 
exercise price 
$  1.10 
$  1.90 
$  1.01 

       $     - 

Balance at December 31 

8,676,142    

$  1.53 

 5,624,583 

$  1.48 

At December 31, 2011 and 2010, the average remaining contractual life of the outstanding warrants 
was 3.2 years and 3.4 years, respectively.  

The  warrants,  which  were  issued  to  investors  in  the  December  2007,  March  2008,  May  2009, 
October 2009, June 2010 and March, 2011 offerings, contain a provision for net cash settlement in 
the  event  that  there  is  a  fundamental  transaction  (contractually  defined  as  a  merger,  sale  of 
substantially  all  assets,  tender  offer,  or  share  exchange).      If  a  fundamental  transaction  occurs  in 
which the consideration issued consists principally of cash or stock in a non-public company, then 
the warrant holder has the option to receive cash, equal to the fair value of the remaining unexercised 
portion  of  the  warrant.    Due  to this  contingent  redemption  provision, the  warrants require  liability 
classification in accordance with ASC 480, “Distinguishing Liabilities from Equity,” (“ASC 480”) 
and are recorded at fair value.  In addition, the warrants issued in the May 2009, October 2009, June 
2010 and March, 2011 offerings contain a cashless exercise provision that is exercisable only in the 
event that a registration statement is not effective. This provision may not be operative if an effective 
registration statement is not available because of an exemption under the U.S. Securities laws may 
not be available to issue unregistered shares.  As a result, net cash settlement may be required. 

ASC  820  provides  requirements  for  disclosure  of  liabilities  that  are  measured  at  fair  value  on  a 
recurring  basis  in  periods  subsequent  to  the  initial  recognition.    Fair  values  for  warrants  are 
determined using the Binomial Lattice (“Lattice”) valuation technique. The Lattice model provides 
for  dynamic  assumptions  regarding  volatility  and  risk-free  interest  rates  within  the  total  period  to 
maturity.  Accordingly,  within  the  contractual  term,  the  Company  provided  multiple  date  intervals 
over  which  multiple  volatilities  and  risk  free  interest  rates  were  used.  These  intervals  allow  the 
Lattice model to project outcomes along specific paths which consider volatilities and risk free rates 
that would be more likely in an early exercise scenario.  

F-33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

13. Warrants (cont’d) 

Significant assumptions are determined as follows:  

Trading market values—Published trading market values;  
Exercise price—Stated exercise price;  
Term—Remaining contractual term of the warrant;  
Volatility—Historical trading volatility for periods consistent with the remaining terms;  
Risk-free rate—Yields on zero coupon government securities with remaining terms consistent with 
the remaining terms of the warrants.  

Due  to  the  fundamental  transaction  provision,  which  could  provide  for  early  redemption  of  the 
warrants,  the  model  also  considered  the  probability  the  Company  would  enter  into  a  fundamental 
transaction during the remaining term of the warrant. Since the Company is still in its development 
stage  and  is  not  yet  achieving  positive  cash  flow,  management  believes  the  probability  of  a 
fundamental transaction occurring over the term of the warrant is approximately 5%.  For valuation 
purposes, the Company also assumed that if such a transaction did occur, it was more likely to occur 
towards the end of the term of the warrants. 

The  warrants  issued  in  December  2007  and  March  2008  are  not  only  subject  to  traditional  anti-
dilution  protection, such as stock splits and dividends, but they are also subject to down-round anti-
dilution  protection.  Accordingly,  if  the  Company  sells  common  stock  or  common  stock  indexed 
financial instruments below the stated exercise price, the exercise price related to these warrants will 
adjust to that lower amount.  The Lattice model used to value the warrants with down-round anti-
dilution protection provides for multiple, probability-weighted scenarios at the stated exercise price 
and at five additional decrements/scenarios on each valuation date in order to encompass the value of 
the anti-dilution provisions in the estimate of fair value of the warrants. Calculations were performed 
at the stated exercise price and at five additional decrements/scenarios on each valuation date. The 
calculations  provide  for  multiple,  probability-weighted  scenarios  reflecting  decrements  that  result 
from  declines  in  the  market  prices.  Decrements  are  predicated  on  the  trading  market  prices  in 
decreasing ranges below the contractual exercise price. For each valuation date, multiple Binomial 
Lattice  calculations  were  performed  which  were  probability  weighted  by  considering  both  the 
Company’s (i) historical market pricing trends, and (ii) an outlook for whether or not the Company 
may need to issue equity or equity-indexed instruments in the future with a price less than the current 
exercise price. 

F-34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

13. Warrants (cont’d) 

The following table summarizes the fair value of the warrants as of the balance sheet date: 

Fair Values: 
December 18, 2007 financing  
March 20, 2008 financing 
June 5, 2009 financing: 
     Series I warrants 
     Series II warrants 
     Series III warrants 
     Warrants to placement agent 
October 23, 2009 financing:  
     Warrants to institutional investors 
     Warrants to placement agent 
June 30, 2010 financing 
     Warrants to institutional investors 
     Warrants to placement agent 
March 31, 2011 financing:  
     Warrants to institutional investors 
     Warrants to placement agent 
Total: 

Fair Value as of: 
December 31, 
2010 

December 31, 
2011 
$             -        $             -       $    1,392,476 
       190,917 

Transaction 
Date 

       123,558 

- 

- 
- 
89,756 
8,893 

129,221 
714 

- 
- 
751,022 
69,032 

694,377 
111,241 

89,800 
2,320 

1,106,800 
110,680 

707,111 
1,315,626 
1,306,200 
122,257 

1,012,934 
101,693 

1,800,800 
180,080 

544,000 
4,021 
$  868,725 

- 
- 
$  2,966,710 

2,826,666 
97,667 
$  11,054,427 

The following table summarizes the number of shares indexed to the warrants as of the balance sheet 
date: 

Number of Shares Indexed: 
December 18, 2007 financing  
March 20, 2008 financing 
June 5, 2009 financing: 
     Series I warrants 
     Series II warrants 
     Series III warrants 
     Warrants to placement agent 
October 23, 2009 financing:  
     Warrants to institutional investors 
     Warrants to placement agent 
June 30, 2010 financing 
     Warrants to institutional investors 
     Warrants to placement agent 
March 31, 2011 financing:  
     Warrants to institutional investors 
     Warrants to placement agent 
Total: 

Number of Shares Indexed as of: 

December 31, 
2010 

December 31, 
2011 
- 
           -       
           -              281,065 

Transaction 
Date 
     1,078,579 
       128,572 

- 
- 
1,555,555 
132,143 

- 
- 
1,555,555 
132,143 

1,228,333 
18,445 

1,228,333 
    227,487 

2,000,000 
200,000 

2,000,000 
200,000 

2,222,222 
1,866,666 
1,555,555 
142,857 

2,125,334 
245,932 

2,000,000 
200,000 

3,333,333 
208,333 
     8,676,142 

- 
- 
     5,624,583 

3,333,333 
208,333 
    15,107,383 

F-35 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

13. Warrants (cont’d) 

The assumptions used in calculating the fair values of the warrants are as follows:  

December 18, 2007  financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 
Estimated additional shares to be                    
issued upon dilutive event 

March 20, 2008 financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 
Estimated additional shares to be                    
issued upon dilutive event 

June 5, 2009 financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 

October 23, 2009 financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 

December 31,          

December 31, 
2010 

2011 

$                 -        $                 -       

- 
- 
- 
- 
- 

- 
- 
- 
- 
- 

Transaction Date 
$           1.75 
143% 
- 
3.27% 
106% 
3.26% 

                 -       

                 -       

98,838 

December 31,          

December 31, 
2010 

2011 

$                 -        $           1.12 
75% 
- 
0.47% 
42% 
0.12% 

- 
- 
- 
- 
- 

                 -       

Transaction Date 
$           2.14 
142% 
- 
1.95% 
97% 
1.31% 

25,462 

7,479 

December 31,          

December 31, 
2010 

2011 
$           0.38 
98-100% 
- 
0.38% 
80-81% 
0.14% 

$           1.12 
94-100% 
- 
1.84-4.18% 
72-73% 
0.52% 

December 31,          

December 31, 
2010 

$           1.12 
100% 
- 
1.84% 
65-74% 
0.38-0.58% 

2011 
$           0.38 
98-100% 
- 
$           0.38 
72-81% 
0.08-0.16% 

F-36 

Transaction Date 
$           1.14 
100% 
- 
0.63-4.31% 
103-117% 
0.20-1.44% 

Transaction Date 
$           0.69 
100% 
- 
2.63-3.80% 
98-99%% 
0.93-1.16% 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

13. Warrants (cont’d) 

June 30, 2010 financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 

March 31, 2011  financing: 
Trading market prices 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 
Equivalent volatility 
Equivalent risk-free rate 

December 31,          

December 31, 
2010 

2011 
$           0.38 
86-100% 
- 
0.38-0.58% 
72-79% 
0.08-0.14% 

$           1.12 
67% 
- 
1.84% 
89% 
0.52% 

Transaction Date 
$           1.43 
100% 
- 
1.78% 
98% 
0.59% 

December 31,          

December 31, 
2010 

$                 -       

2011 
$           0.38 
87-100% 
- 
0.38-1.54% 
72-90-% 
0.08-0.28% 

Transaction Date 
$           1.18 
100% 
- 
1.32-3.64% 
79-96% 
0.39-1.09% 

- 
- 
- 
- 
- 

Changes in the fair value of the warrant liabilities, carried at fair value, as reported as “unrealized 
gain (loss) on fair value of warrants” in the Statement of Operations: 

For the Year Ended December 31, 
2010 

2009 

2011 

Cumulative 
from       
March 19, 
2011 
(Inception) to 
December 31, 
2011 

December 18, 2007 financing  
March 20, 2008 financing 
June 5, 2009 financing: 
    Series I warrants 
    Series II warrants 
    Series III warrants 
    Warrants to placement agent 
    Derivative loss at inception 
October 23, 2009 financing:  
    Warrants to institutional investors 
    Warrants to placement agent 
June 30, 2010 financing 
    Warrants to institutional investors 
    Warrants to placement agent 
March 31, 2011 financing:  
    Warrants to institutional investors 
    Warrants to placement agent 
Total: 

$                 -       $    (510,776)  $    (243,841)  $       50,722 
160,063 
         92,704              (18,806) 

       (36,196) 

- 
- 
661,266 
60,139 
- 

- 
(2,996,828) 
(191,333) 
(29,255) 
- 

707,111 
805,653 
746,511 
68,100 
(328,937) 

707,111 
(2,191,175) 
1,216,444 
98,984 
(328,937) 

565,156 
(102,487) 

(798,694) 
    (40,854) 

68,011 
6,689 

(165,527) 
(136,652) 

1,017,000 
108,360 

2,282,666 
93,646 

694,000 
69,400 

- 
- 

- 
- 

- 
- 

1,711,000 
177,760 

2,282,666 
93,646 

$  4,778,450  $ (3,823,146)  $    1,793,101  $  3,676,105     

F-37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

14.  Put Feature on Common Stock  

The  anti-dilution  provision  extended  in  the  December  2007  and  March  2008  financings  is  a  financial 
instrument separate and apart from the share. It is a freestanding written put (a put on our common stock). 
As an enterprise value put, the contracts’ value moves inversely with the value of the underlying common 
stock which, under ASC 480, is not consistent with the general concepts or criterion for equity classified 
financial instruments. Accordingly, the written put was required to be classified as a liability under ASC 
480  and  recorded  at  fair  value  each  reporting  period,  while  the  common  stock  achieved  equity 
classification.  Changes  in  the  fair  value  of  the  anti-dilution  make-whole  provision  are  reported  as 
“unrealized gain (loss) on fair value of put feature on common stock.” 

The  anti-dilution  make-whole  provisions  associated  with  the  common  stock,  were  valued  using  a 
probability–weighting of put values provided by the Lattice model.  Additional value would result from 
the put upon an increase in the exercise price or upon decrease of the trading market price in the future. 
Since  the  exercise  price  is  based  on  the  actual  sales  price  of  the  stock  issued,  it  is  not  subject  to 
adjustment unless there is an actual dilutive event. Therefore, the mechanism for determining the value of 
the put was to adjust the stock price input into the Lattice model based on the Company’s estimated future 
stock price.  A Random Walk Brownian Motion Stochastic Process (“Brownian”) technique was used to 
estimate the market price at several points in the future (e.g. at inception, 6 months, 12 months, 18 months 
and 24 months) over the term of the put to determine if the stock price will be expected to decrease over 
the related interval of time. Brownian is a continuous stochastic process that is widely used in financing 
for modeling random behavior that evolves over time, and a stochastic process is a sequence of events or 
paths  generated  by  probabilistic  laws.  At  each  interval,  the  Brownian  technique  was  run  and  the 
simulation returned the mean stock price (the “expected stock price”).  

Expected stock prices returned from the stochastic model were then input into the Binomial Lattice model 
to  provide  a  put  value  at  each  of  the  expected  price  and  these  values  were  probability  weighted  to 
determine  the  overall  fair  value  of  the  anti-dilution  make-whole  provision.  The  term  was  based  on  the 
remaining term of the put (two years at inception) and the inputs for volatility and interest rate were based 
on projected volatility and interest rate in the future over the remaining term.  

The  following  table  summarizes  the  fair  value  of  the  anti-dilution  provision  recorded  at  fair  value  as 
liabilities: 

Fair Values: 
December 18, 2007 financing 
March 20, 2008 financing 
Total: 

December 31, 
2011 

December 31, 
2010 
$                  -       $                  -      $      4,401,169 
              -                553,569 
$                  -       $                  -      $      4,954,738 

Transaction 
Date  

              -        

The following table summarizes the number of shares indexed to the anti-dilution provision at the balance 
sheet date: 

Number of Shares Indexed: 
December 18, 2007 financing 
March 20, 2008 financing 
Total: 

December 31, 
2011 

                  -      

              -        

                 -      

Transaction 
Date  

December 31, 
2010 
                 -             4,857,159 
              -                642,858 
               -             5,500,017 

F-38 

 
 
 
 
   
  
  
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

14.  Put Feature on Common Stock (cont’d) 

Since the anti-dilution provisions expired on December 18, 2009 and March 20, 2010, there is no liability 
as of December 31, 2011 or 2010. 

The assumptions used in calculating the fair values of the anti-dilution provision were as follows: 

December 18, 2007  financing: 
Trading market prices 
Estimated future stock price 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 

March 20, 2008  financing: 
Trading market prices 
Estimated future stock price 
Estimated future volatility 
Dividend 
Estimated future risk-free rate 

December 18, 2007  financing  
March 20, 2008 financing 
Total: 

December 31,          

2011 

December 31, 
2010 

Transaction 
Date 

$                  -       $                  -       $           1.75 
              -         $0.98-$1.75 
143% 
              -        
              -        
              -        
3.14% 
              -        

              -        
              -        
              -        
              -        

December 31,          

2011 

December 31, 
2010 

Transaction 
Date 

$                  -       $                  -       $           2.14 
              -         $1.36-$2.10 
              -        
142% 
              -        
              -        
1.85% 
              -        

              -        
              -        
              -        
              -        

For the Year Ended December 31, 
2010 

2009 

2011 

Cumulative 
from       
March 19, 
2011 
(Inception) to 
December 31, 
2011 

$                -        $                -       $    1,794,554  $    2,148,418 
       167,121 
    2,315,539 

       120,625 
$                -        $      97,713  $    1,915,179 

           -       

       97,713 

F-39 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

15.  Income Taxes 

No provision for federal and state income taxes was required for the years ended December 31, 2011 
and  2010,  due  to  the  Company’s  operating  losses  and  increased  deferred  tax  asset  valuation 
allowance.    At  December  31,  2011  and  2010,  the  Company  has  unused  net  operating  loss  carry-
forwards  of  approximately  $55,394,000  and  $46,283,000  which  expire  at  various  dates  between 
2021 and 2031.  Some of this amount may be subject to annual limitations under certain provisions 
of the Internal Revenue Code related to “changes in ownership”.  During the year ended December 
31, 2011, the Company amended prior years’ tax returns to correct prior errors, which adjusted the 
net operating loss carryforward. 

As  of  December  31,  2011  and  2010,  the  deferred  tax  assets  related  to  the  aforementioned  carry-
forwards have been fully offset by valuation allowances, since significant utilization of such amounts 
is not presently expected in the foreseeable future.   

Deferred tax assets and valuation allowances consist of: 

Net operating loss carry-forwards 

2011 
$     21,603,700 

2010 
$     18,050,380 

Stock option compensation 

         1,753,400 

           1,568,000       

Book tax differences on assets and 
liabilities 
Valuation allowance 

            348,600 

              392,600       

    (23,705,700) 

(20,010,980) 

 Net deferred tax assets 

  $                -       

  $                -       

The Company files income tax returns in the U.S. federal and Maryland state jurisdictions. The 2008 
through 2011 tax years are open and potentially subject to examination by the federal and Maryland 
state taxing authorities. 

The Company was awarded a refundable tax credit of $822,137 in 2010 from the federal government 
through  the  Qualified  Therapeutic  Discovery  Project  Program  enacted  from  the  Patient  Protection 
and  Affordable  Care  Act  of  2010.    The  Company  was  eligible  for  this  tax  credit  based  upon  its 
expenses for qualified projects in 2009 and 2010.  Qualified projects include defined projects which 
treat  preventable  diseases  and  conditions  by  conducting  pre-clinical  activities,  clinical  trials,  or 
carrying  out  research  protocols.    The  tax  credit  is  reflected  as  a  reduction  to  research  and 
development expenses.  The full amount of the credit has been received by December 31, 2011. As 
of  December  31,  2010,  $676,624 of  the  credit  had  been received and  the  remaining  $145,513  was 
included as a receivable. 

F-40 

 
 
 
 
 
 
 
 
 
      
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

16.  Commitments and Contingencies 

a)  The  Company  has  contracted  with  various  vendors  to  provide  research  and  development 
services. The terms of these agreements usually require an initial fee and monthly or periodic 
payments over the term of the agreement, ranging from 2 months to 36 months. The costs to be 
incurred are estimated and are subject to revision. As of December 31, 2011, the total estimated 
cost to be incurred under these agreements was approximately $19,406,124 and the Company 
had made payments totaling $15,103,318 under the terms of the agreements as of December 31, 
2011.    All  of  these  agreements  may  be  terminated  by  either  party  upon appropriate  notice as 
stipulated in the respective agreements. 

b)    The  Company  and  three  of  its  key  executives  entered  into  employment  agreements.  Each  of 
these  agreements  was  renewed  on  August  10,  2009  and  expires  on  August  10,  2012.    The 
agreements  result  in  annual  commitments  for  each  key  executive  of  $200,000,  $350,000  and 
$250,000, respectively.  The employment agreements were amended on September 9, 2010 and 
will expire on September 9, 2013.    

c)  On  June  22,  2009,  the  Company  entered  into  a  License  Agreement  with  Korea  Research 
Institute of Chemical Technology (“KRICT”) to acquire the rights to all intellectual properties 
related  to  Quinoxaline-Piperazine  derivatives  that  were  synthesized  under  a  Joint  Research 
Agreement.  The initial license fee was $100,000, all of which was paid by December 31, 2009.  
The  agreement  with  KRICT  calls  for  a  one-time  milestone  payment  of  $1,000,000  within  30 
days after the first achievement of  marketing approval of the first commercial product arising 
out  of  or in connection  with the use  of  KRICT’s  intellectual  properties.    As  of  December  31, 
2011, this milestone has not yet occurred. 

d)  On June 29, 2009, the Company signed a five year lease for 5,466 square feet of office space in 
Rockville,  Maryland  commencing  on  June  29,  2009.    The  lease  requires  annual  base  rents  of 
$76,524  with  increases  over  the  next  five  years.  Under  the  leasing  agreement,  the  Company 
pays  its  allocable  portion of  real  estate  taxes  and  common  area  operating  charges.   Rent  paid 
under  the  Company’s  lease  during  the  years  ended  December  31,  2011,  2010  and  2009  was 
$148,593, $108,418 and $38,262, respectively.  

Future rental payments over the next three years are as follows: 

2012 
2013 
2014 

           $    158,835 
    162,806 
      82,408 
           $    404,049 

In  connection  with  the  lease  agreement,  the  Company  issued  a  letter  of  credit  of  $100,000  in 
favor  of  the  lessor.    The  Company  has  restricted  cash  equivalents  of  the  same  amount  for  the 
letter of credit.  On August 2, 2010 and July 1, 2011, the letter of credit was amended, and the 
commitment  amount  and  restricted  cash  equivalent  was  reduced  to  $50,000  and  $37,500, 
respectively.   

F-41 

 
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

16. Commitments and Contingencies (cont’d) 

e)  On  September  21,  2009,  the  Company  closed  on  a  securities  purchase  agreement  with  Teva 
Pharmaceutical  Industries  Limited  (“Teva”),  under  which  Teva  purchased  3,102,837  shares  of 
our  common  stock  for  $3.5  million.  Contemporaneous  with  the  execution  and  delivery  of  this 
agreement,  the  parties  executed  a  research  and  exclusive  license  option  agreement  (“RELO”) 
pursuant  to  which  the  Company  agreed  to  use  $2,000,000  from  the  gross  proceeds  of  the 
issuance  and  sale  of  shares  to  Teva  to  fund  a  research  and  development  program  for  the  pre-
clinical  development  of  RX-3117.    On  January  19,  2011,  the  Company  entered  into  a  second 
amendment  to  the  securities  purchase  agreement  (the  “Second  Amendment”)  in  which  Teva 
purchased  2,334,515  shares  of  the  common  stock  of  the  Company  for  gross  proceeds  of 
$3,950,000,  which  the  Company  agreed  to  use  for  the  further  preclinical  development  of  RX-
3117.    At  December  31,  2011,  the  Company  has  proceeds  remaining  of  $1,394,265  and  has 
included  this  amount  in  restricted  cash  equivalents.    The  Company  will  be  eligible  to  receive 
royalties on net sales of RX-3117 worldwide.   

f)  The Company established a 401(k) plan for its employees where the Company elected to match 
100%  of  the  first  3%  of  the  employee’s  compensation  plus  50%  of  an  additional  2%  of  the 
employee’s  deferral.    Expense  related  to  this  matching  contribution  aggregated  $66,162, 
$65,019, and $49,519 for the years ended December 31, 2011, 2010 and 2009, respectively. 

g)  On June 28, 2010, the Company signed a one year renewal to use lab space commencing on July 
1, 2010, and on June 22, 2011, the Company extended the lease for an additional year.  The lease 
requires  monthly rental  payments  of  $4,554.   Rent  paid under the  Company’s  lease  during  the 
years  ended  December  31,  2011,  2010  and  2009  was  $54,648,  $54,648  and  $13,662, 
respectively. 

h)    On  August  31,  2011,  the  Company  entered  into  an  agreement  with  a  consultant  for  advisory 
services pertaining to the securing of grants or other funding sources for the Company.  Per the 
terms of the agreement, the consultant will be compensated in shares of restricted common stock 
calculated by a formula of the funding received by the Company. As of December 31, 2011, the 
Company has not received funding or issued stock resulting from this agreement. 

F-42 

 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

17.   Fair Value Measurements 

ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a 
liability in an orderly transaction between market participants at the measurement date, not adjusted 
for  transaction  costs.  ASC  820  also  establishes  a  fair  value  hierarchy  that  prioritizes  the  inputs  to 
valuation techniques used to measure fair value into three broad levels giving the highest priority to 
quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to 
unobservable inputs (Level 3).   

The three levels are described below:  

Level 1 Inputs 

— 

Unadjusted quoted prices in active markets for identical assets or 
liabilities that is accessible by the Company; 

Level 2 Inputs 

— 

Quoted prices in markets that are not active or financial instruments for 
which all significant inputs are observable, either directly or indirectly; 

Level 3 Inputs 

— 

Unobservable inputs for the asset or liability including significant 
assumptions of the Company and other market participants. 

The following tables present our assets and liabilities that are measured at fair value on a recurring 
basis  and  are  categorized  using  the  fair  value  hierarchy.  The  fair  value  hierarchy  has  three  levels 
based on the reliability of the inputs used to determine fair value. 

Assets:  
     Restricted cash equivalents 
     Marketable securities 
Total Assets: 

Liabilities: 
     Warrant liabilities 
Total Liabilities: 

Assets:  
     Restricted cash equivalents 
     Marketable securities 
Total Assets: 

Liabilities: 
     Warrant liabilities 
Total Liabilities: 

Fair Value Measurements as of December 31, 2011 

Total 

Level 1 

Level 2 

Level 3 

$    1,431,765  $    1,394,265 
    1,950,000 
    1,950,000 
$    3,381,765  $    3,344,265 

$       37,500 

           -       

$       37,500 

           -       
           -       
           -       

$       868,725 
$       868,725 

           -       
           -       

           -       $       868,725 
           -       $       868,725 

Fair Value Measurements as of December 31, 2010 

Total 

Level 1 

Level 2 

Level 3 

$       401,893  $       351,893 
    2,451,620 
    2,451,620 
$    2,853,513  $    2,803,513 

$       50,000 

           -       

$       50,000 

           -       
           -       
           -       

$    2,966,710 
$    2,966,710 

           -       
           -       

           -       $    2,966,710 
           -       $    2,966,710 

F-43 

 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
      
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

17.   Fair Value Measurements (cont’d) 

As of December 31, 2011 and 2010, the Company’s restricted cash equivalents are comprised of the 
following: 

a)  Money  market  funds  valued  at  the  net  asset  value  of  shares  held  by  the  Company  and  is 

classified within level 1 of the fair value hierarchy;  

b)  Certificate  of  deposit  valued  based  upon  the  underlying  terms  of  a  letter  of  credit,  as 

discussed in Note 16, and classified within level 2 of the fair value hierarchy. 

Marketable securities consist of state authority and municipal security fund bonds which are valued 
at fair value and classified within level 1 of the fair value hierarchy.  

The fair value methodology for the warrant liabilities is discussed in Note 13. 

The  carrying  amounts  reported  in  the  financial  statements  for  cash  and  cash  equivalents,  note 
receivable, prepaid expenses and other currents assets, and accounts payable and accrued expenses 
approximate fair value because of the short term maturity of these financial instruments. 

The following table sets forth a reconciliation of changes in the year ended December 31, 2011 and 
2010 in the fair value of the liabilities classified as level 3 in the fair value hierarchy: 

Balance at January 1, 2011 
Additions,  fair  value  of  warrants 
issued in March, 2011 
Unrealized gains, net 
Unrealized gains on expiration 
Transfers out of Level 3 
Balance at December 31, 2011 

Balance at January 1, 2010 
Additions,  fair  value  of  warrants 
issued in June, 2010 
Unrealized losses, net 
Unrealized gains on expiration 
Transfers out of Level 3 
Balance at December 31, 2010 

Warrant 
Liabilities 

Total Level 3 
Liabilities 

$    2,966,710  $    2,966,710 
    2,924,333 
     2,924,333 

     (4,739,881) 
   (38,569) 
      (243,868) 
$    868,725 

   (4,739,881) 
   (38,569) 
    (243,868) 
$    868,725 

Put Feature on 
Common Stock 

Warrant 
Liabilities 

Total Level 3 
Liabilities 

$    97,713  $    3,099,476  $    3,197,189 
    1,980,880 

           -           1,980,880 

   (97,713) 

           -           3,823,146 

    3,823,146 
   (97,713) 
    (5,936,792) 
$                 -       $    2,966,710  $    2,966,710 

           -           (5,936,792) 

           -       

F-44 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REXAHN PHARMACEUTICALS, INC. 
(A Development Stage Company) 
Notes to the Financial Statements 
For the Years Ended December 31, 2011, 2010 and 2009 

17.   Fair Value Measurements (cont’d) 

Additions  consist  of  the  fair  value  of  warrant  liabilities  upon  issuance.    Transfers  out  of  Level  3  for 
warrant  liabilities  consist  of  warrant  exercises.    The  Company’s  policy  is  to  recognize  transfers  in  and 
transfers out as of the actual date of the event or change in circumstance that caused the transfer.  There 
were  no  significant  transfers  in  and  out  of  Levels  1 and  2 for the  years ended December  31, 2011  and 
2010.    

18. Selected Quarterly Data (Unaudited) 

2011 
For the Quarter Ended 
June 30 

September 30  December 31 

March 31  

$                  -    $                  -    $                  -    $                 -   

(3,913,340)                
(3,913,340)                

(6,458,586)                
(6,458,586)                

(2,404,028)                
(2,404,028)                
(522,821)                629,734                 1,885,841                 2,793,309                
$     389,281                

(3,355,059)                
(3,355,059)                

$ (4,436,161)                
$          (0.05)    $          (0.06)    $          (0.02)    $           0.00   

$ (5,828,852)                

$ (1,469,218)                

2010 
For the Quarter Ended 
June 30 

September 30  December 31 

March 31  

$                  -    $                  -    $                  -    $                  -   

(3,189,014)                
(3,189,014)                

(1,593,118)                
(1,593,118)                
(6,440,478)                
$ (8,033,596)                
$          (0.11)    $          (0.05)    $            0.00    $          (0.03)   

(3,156,251)                
(2,367,526)                
(3,156,251)                
(2,367,526)                
(408,056)                2,586,417                 545,919                
$ (2,610,332)                

$ (3,597,070)                

$      218,891                

Revenues 
Expenses 
Loss from Operations 
  Other Income (Expense) 
Net Loss (Income) 
Net Loss (Income) per share, basic and 
diluted 

Revenues 
Expenses 
Loss from Operations 
  Other Income (Expense) 
Net Loss (Income) 
Net Loss (Income) per share, basic and 
diluted 

For the quarters ended June 30, 2011 and previous, the Company had reported $18,750 in revenue from 
the  amortization  of  the  Rexgene  contribution  as  described  in  Note  9.    The  Company  reclassified  the 
revenue  to  a  reduction  of  research  and  development  expenses  in  the  Statement  of  Operations.    The 
reclassification had no effect on the Company’s net loss or net loss per share for all quarters presented.  

F-45 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3.1 

3.2 

4.1 

4.2 

4.3 

*10.1.1 

*10.1.2 

*10.1.3 

*10.2 

*10.3 

10.4 

*10.5 

10.6 

10.7 

10.8 

EXHIBIT INDEX 

Amended and Restated Certificate of Incorporation, filed as Appendix G to the Company’s 
Definitive Proxy Statement on Schedule 14A (File No. 000-50590) dated April 29, 2005, is 
incorporated herein by reference. 
Amended and Restated Bylaws, filed as Exhibit 3.1 to the Company’s Current Report on 
Form 8-K filed on March 26, 2010, is incorporated herein by reference. 
Specimen Certificate for the Company’s Common Stock, par value $.0001 per share, filed as 
Exhibit 4.3 to the Company’s Registration Statement on Form S-8 (File No. 333-129294) 
dated October 28, 2005, is incorporated herein by reference. 
Form of Senior Debt Securities Indenture, filed as Exhibit 4.3 to the Company’s Registration 
Statement on Form S-3 dated June 22, 2011, is incorporated herein by reference. 
Form of Subordinated Debt Securities Indenture, filed as Exhibit 4.4 to the Company’s 
Registration Statement on Form S-3 dated June 22, 2011 is incorporated herein by reference.   
Rexahn Pharmaceuticals, Inc. Stock Option Plan, as amended, filed as Exhibit 4.4 to the 
Company’s Registration Statement on Form S-8 (File No. 333-129294) dated October 28, 
2005, is incorporated herein by reference. 
Form of Stock Option Grant Agreement for Employees, filed as Exhibit 4.5.1 to the 
Company’s Registration Statement on Form S-8 (File No. 333-129294) dated October 28, 
2005, is incorporated herein by reference. 
Form of Stock Option Grant Agreement for Non-Employee Directors and Consultants, filed as 
Exhibit 4.5.2 to the Company’s Registration Statement on Form S-8 (File No. 333-129294) 
dated October 28, 2005, is incorporated herein by reference. 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 
Pharmaceuticals, Inc. and C. H. Ahn, filed as Exhibit 10.1 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 
Pharmaceuticals, Inc. and T. H. Jeong, filed as Exhibit 10.3 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Lease Agreement, dated June 5, 2009, by and between Rexahn Pharmaceuticals, Inc. and The 
Realty Associates Fund V, L.P., filed as Exhibit 10.4 to the Company’s Quarterly Report on 
Form 10-Q for the quarterly period ended June 30, 2009, is incorporated herein by reference 
Employment Agreement, dated as of September 9, 2010, by and between Rexahn 
Pharmaceuticals, Inc. and Rakesh Soni, filed as Exhibit 10.2 to the Company’s Current Report 
on Form 8-K filed on September 10, 2010, is incorporated herein by reference. 
Securities Purchase Agreement, dated as of May 19, 2009 by and between Rexhan 
Pharmaceuticals, Inc. and the purchaser signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K filed on May 20, 2009, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Series I, II, and III Common Stock Purchase Warrants, 
filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on May 20, 2009, is 
incorporated herein by reference. 
Research and Exclusive License Option Agreement, dated as of June 26, 2009, by and 
between Rexahn Pharmaceuticals, Inc. and Teva Pharmaceutical Industries Limited, filed as 
Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on September 21, 2009, is 
incorporated herein by reference.  

 
 
10.9 

10.10 

10.11 

10.12 

10.13 

10.14 

10.15 

12.1 
14 

16 

23 
24 
31.1 
31.2 
32.1 

32.2 

101.INS 
101.SCH 
101.CAL 
101.DEF 
101.LAB 
101.PRE 

Securities Purchase Agreement, dated as of June 26, 2009, by and between Rexahn 
Pharmaceuticals, Inc. and Teva Pharmaceutical Industries Limited (the “Teva Securities 
Purchase Agreement”), filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K 
filed on September 21, 2009, and Amendment No. 1 to the Teva Securities Purchase 
Agreement, filed as Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on 
September 21, 2009, are incorporated herein by reference. 
Securities Purchase Agreement, dated as of October 19, 2009, by and between Rexahn 
Pharmaceuticals, Inc. and the purchasers signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K, filed on October 20, 2009, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on October 20, 2009, is incorporated 
herein by reference. 
Securities Purchase Agreement, dated as of  June 28, 2010 by and between Rexahn 
Pharmaceuticals, Inc. and the purchasers signatory thereto, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K, filed on June 29, 2010, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on June 29, 2010, is incorporated herein 
by reference. 
Amendment No. 2 to the Teva Securities Purchase Agreement, filed as Exhibit 10.1 to the 
Company’s Current Report on Form 8-K filed on January 20, 2011, is incorporated herein by 
reference. 
Form of Warrant for the Company’s Common Stock Purchase Warrants, filed as Exhibit 4.1 
to the Company’s Current Report on Form 8-K filed on March 30, 2011, is incorporated 
herein by reference. 
Statement re Computation of Ratios 
Code of Ethics and Business Conduct, filed as Exhibit 14 to the Company’s Annual Report on 
10-K for the fiscal year ended December 31, 2008, filed on March 16, 2009, is incorporated 
herein by reference. 
Letter of Lazar Levine & Felix LLP dated February 27, 2009, filed as Exhibit 16.1 to the 
Company’s Amended Current Report on Form 8-K filed on March 2, 2009, is incorporated 
herein by reference. 
Consent of ParenteBeard LLC, independent registered public accounting firm.   
Power of Attorney. 
Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a).  
Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a). 
Certification  of  Chief  Executive  Officer  of  Periodic  Report  Pursuant  to  18  U.S.C. 
Section 1350. 
Certification  of  Chief  Financial  Officer  of  Periodic  Report  Pursuant  to  18  U.S.C. 
Section 1350. 
XBRL Instance Document 
XBRL Taxonomy Extension Schema 
XBRL Taxonomy Calculation Linkbase 
XBRL Taxonomy Definition Linkbase 
XBRL Taxonomy Label Linkbase 
XBRL Taxonomy Presentation Linkbase 

_______________________ 
* Management contract or compensation plan or arrangement.