Quarterlytics / Healthcare / Drug Manufacturers - General / Progenics Pharmaceuticals

Progenics Pharmaceuticals

pgnx · NASDAQ Healthcare
Claim this profile
Ticker pgnx
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers - General
Employees 51-200
← All annual reports
FY2009 Annual Report · Progenics Pharmaceuticals
Sign in to download
Loading PDF…
Disclosure Notice

This annual report contains statements that do not relate strictly to historical fact, any of which may 
be forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform 
Act of 1995. When we use the words “anticipates,” “plans,” “expects” and similar expressions, we are 
identifying forward-looking statements. Forward-looking statements involve known and unknown 
risks  and  uncertainties  which  may  cause  our  actual  results,  performance  or  achievements  to  be 
materially  different  from  those  expressed  or  implied  by  forward-looking  statements.  While  it  is 
impossible to identify or predict all such matters, these differences may result from, among other 
things, the inherent uncertainty of the timing and success of, and expense associated with, research, 
development, regulatory approval and commercialization of our products and product candidates, 
including the risks that clinical trials will not commence or proceed as planned; products appearing 
promising in early trials will not demonstrate effi cacy or safety in larger-scale trials; clinical trial 
data  on  our  products  and  product  candidates  will  be  unfavorable;  our  products  will  not  receive 
marketing  approval  from  regulators  or,  if  approved,  do  not  gain  suffi cient  market  acceptance  to 
justify development and commercialization costs; competing products currently on the market or 
in development might reduce the commercial potential of our products; we, our collaborators or 
others might identify side effects after the product is on the market; or effi cacy or safety concerns 
regarding marketed products, whether or not originating from subsequent testing or other activities 
by us, governmental regulators, other entities or organizations or otherwise, and whether or not 
scientifi cally justifi ed, may lead to product recalls, withdrawals of marketing approval, reformulation 
of the product, additional pre-clinical testing or clinical trials, changes in labeling of the product, 
the need for additional marketing applications, declining sales or other adverse events. 

We are also subject to risks and uncertainties associated with the actions of our corporate, academic 
and other collaborators and government regulatory agencies, including risks from market forces and 
trends; potential product liability; intellectual property, litigation, environmental and other risks; 
the risk that we may not be able to enter into favorable collaboration or other relationships or that 
existing or future relationships may not proceed as planned; the risk that current and pending patent 
protection for our products may be invalid, unenforceable or challenged, or fail to provide adequate 
market  exclusivity,  or  that  our  rights  to  in-licensed  intellectual  property  may  be  terminated  for 
our failure to satisfy performance milestones; the risk of diffi culties in, and regulatory compliance 
relating to, manufacturing products; and the uncertainty of our future profi tability. 

Risks and uncertainties also include general economic conditions, including interest- and currency 
exchange-rate fl uctuations and the availability of capital; changes in generally accepted accounting 
principles;  the  impact  of  legislation  and  regulatory  compliance;  the  highly  regulated  nature  of 
our  business,  including  government  cost-containment  initiatives  and  restrictions  on  third-party 
payments  for  our  products;  trade  buying  patterns;  the  competitive  climate  of  our  industry;  and 
other  factors  set  forth  in  reports  we  fi le  with  the  U.S.  Securities  and  Exchange  Commission.  In 
particular, we cannot assure you that RELISTOR® will be commercially successful or be approved 
in the future in other formulations, indications or jurisdictions, or that any of our other programs 
will result in a commercial product. 

We do not have a policy of updating or revising forward-looking statements, and we assume no 
obligation to update any statements as a result of new information or future events or developments. 
It should not be assumed that our silence over time means that actual events are bearing out as 
expressed or implied in forward-looking statements. 

Dear Shareholders, 
Employees and Friends,

During 2009, we took the important step of regaining rights to RELISTOR® (methylnaltrexone 
bromide),  the  only  approved  drug  for  the  treatment  of  opioid-induced  constipation  in 
patients  receiving  palliative  care,  from  our  former  collaborator,  Wyeth  Pharmaceuticals 
(which has since been acquired by Pfi zer Inc.). By doing so, we regained control of the future 
marketing and development path of the RELISTOR franchise.  

RELISTOR  is  our  primary  focus  in  2010.  Our  goal  has  been  to  establish  RELISTOR  as  a 
standard-of-care  therapy  for  patients  suffering  from  the  debilitating  effects  of  OIC.    We 
believe that RELISTOR patients and Progenics shareholders will benefi t from re-partnering 
this important franchise.  

We are pursuing 

our overall 

vision for 

RELISTOR — 

to address 

all patients 

with OIC

We  are  in  a  unique  position  of  opportunity  as  we  work  to  re-
partner RELISTOR, which is approved in over 40 countries.  We 
are  pursuing  our  overall  vision  for  RELISTOR  –  to  address  all 
patients  with  OIC,  regardless  of  the  circumstances  of  opioid 
therapy  –  by  seeking  approvals  for  additional  patient  settings 
and  more  convenient  administration  options  such  as  pre-
fi lled  syringes,  multi-dose  pens  and  orally  dosed  tablets,  while 
working  to  assemble  and  transfer  marketing  and  commercial 
responsibilities to a new partner.

We are advancing development of an oral form of RELISTOR for 
OIC patients with chronic, non-cancer-related pain. We recently 
announced  positive  results  from  a  pilot  clinical  study  of  this 
formulation which yielded results consistent with subcutaneous 
RELISTOR when it was evaluated in this patient population. We 
are designing a phase 2b/3 protocol for further evaluation of this 
formulation commencing in the second half of 2010.

In our other drug development efforts, enrollment is continuing in our open-label, dose-
escalation phase 1 trial of our prostate cancer candidate, PSMA-ADC, and we expect trial 
results this year. The study, which is assessing tolerability, safety and initial clinical activity 
of  this  antibody-drug  conjugate,  is  currently  enrolling  men  with  progressive,  hormone-
refractory prostate cancer.

Last  year,  we  completed  two  phase  2  clinical  trials  evaluating  the  subcutaneous  and 
intravenous dosage forms of our HIV candidate, PRO 140. We selected the subcutaneous 
form for further development, and recently published on the phase 2 study in the Journal 
of Infectious Diseases. Progress in this program is contingent upon our obtaining external 
support for advanced clinical trials.

Progenics research programs continue to generate innovative ideas and possibilities, such 
as our scientists’ recent discovery of multiplex cancer pathway inhibitors.  We believe that 
simultaneously  blocking  interlinked  cellular  pathways  with  a  single  agent  may  provide  a 
strategy  to  combat  some  of  the  most  aggressive  forms  of  cancer.    We  are  also  using  our 
extensive  viral-entry  research  platform  to  identify  compounds  that  inhibit  HCV  from 
infecting liver cells. 

Our goal in 2010 will be to secure the best route to maximize the RELISTOR franchise globally. 
We are striving to turn the opportunity to re-launch RELISTOR and make it available to 
additional patient populations into success for our dedicated colleagues and stakeholders 
who have showed unwavering support.

Sincerely,

Paul J. Maddon, M.D., Ph.D.

Founder, Chief Executive Offi cer 
and Chief Science Offi cer
April 27, 2010

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Information

Senior Management

Board of Directors

Paul J. Maddon, M.D., Ph.D.
Founder, Chief Executive Offi cer and
Chief Science Offi cer

Mark R. Baker, J.D.
President

Robert A. McKinney, CPA
Senior Vice President, Finance and
Operations & Chief Financial Offi cer
and Treasurer

Thomas A. Boyd, Ph.D.
Senior Vice President, 
Product Development

Robert J. Israel, M.D.
Senior Vice President, Medical Affairs

William C. Olson, Ph.D.
Senior Vice President, 
Research and Development

Benedict Osorio, M.S., M.B.A.
Senior Vice President, Quality

Kurt W. Briner
Chairman of the Board
President and Chief Executive Offi cer (Retired)
Sanofi  Pharma S.A.

Charles A. Baker
Chairman, President and Chief Executive Offi cer (Retired)
The Liposome Company, Inc.

Mark R. Baker, J.D.
President
Progenics Pharmaceuticals, Inc.

Peter J. Crowley
Head of Healthcare Investment Banking (Retired)
CIBC World Markets

Mark F. Dalton
Co-Chairman and Chief Executive Offi cer,
Tudor Investment Corporation

Stephen P. Goff, Ph.D.
Higgins Professor Biochemistry and Microbiology,
Columbia University
Investigator, Howard Hughes Medical Institute

Nitya G. Ray, Ph.D.
Senior Vice President, Manufacturing

Paul J. Maddon, M.D., Ph.D.
Founder, Chief Executive Offi cer and Chief Science Offi cer
Progenics Pharmaceuticals, Inc.

Ann Marie Assumma, M.S.
Vice President, Regulatory Affairs

Walter M. Capone, M.B.A.
Vice President, Commercial
Development and Operations

Tage Ramakrishna, M.D.
Vice President, Clinical Research

David A. Scheinberg, M.D., Ph.D.
Vincent Astor Chair and Chairman, Molecular Pharmacology 
and Chemistry Program, Sloan-Kettering Institute;
Professor of Medicine and Pharmacology, Weill/Cornell 
Medical College

Nicole S. Williams
Executive Vice President and Chief Financial Offi cer (Retired)
Abraxis Bioscience, Inc. and President (Retired) of Abraxis 
Pharmaceutical Products (a division of Abraxis Bioscience, 
Inc.)

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

(Mark One) 

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, 2009 
Or 
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from ___________ to ___________ 

(cid:133) 

Commission File No. 000-23143 

PROGENICS PHARMACEUTICALS, INC. 
(Exact name of registrant as specified in its charter) 

Delaware 
(State or other jurisdiction of  
incorporation or organization) 

13-3379479 
(I.R.S. Employer Identification Number) 

777 Old Saw Mill River Road 
Tarrytown, NY 10591 
(Address of principal executive offices, including zip code) 

Registrant’s telephone number, including area code: (914) 789-2800 

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

              Title of each class  
                             Common Stock, par value $0.0013 per share  

 Name of each exchange on which registered 
        The NASDAQ Stock Market LLC 

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

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

Yes (cid:134)   No ⌧ 

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

Yes (cid:134)   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 Securities Exchange Act 

of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to 
such filing requirements for the past 90 days.                                                                                                                                               Yes ⌧   No (cid:133) 

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

contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K 
or any amendment to this Form 10-K.                                                                                                                                                                               (cid:133) 

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 definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Act:  

Large Accelerated Filer  (cid:133) 
Non-accelerated Filer  (cid:133) (Do not check if a smaller reporting company) 

Accelerated Filer  ⌧ 
Smaller Reporting Company  (cid:133) 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).                            Yes (cid:134)  No ⌧ 

The aggregate market value of the voting and non-voting stock held by non-affiliates of the registrant on June 30, 2009, based upon the closing 

price of the Common Stock on The NASDAQ Stock Market LLC on that date of $5.15 per share, was $69,591,796 (1).                          

(1)  Calculated by excluding all shares that may be deemed to be beneficially owned by executive officers, directors and five percent stockholders of the 

Registrant, without conceding that any such person is an “affiliate” of the Registrant for purposes of the Federal securities laws. 

As of March 5, 2010, 32,229,627 shares of Common Stock, par value $.0013 per share, were outstanding. 

DOCUMENTS INCORPORATED BY REFERENCE 
Specified portions of the Registrant’s definitive proxy statement to be filed in connection with solicitation of proxies for its 2010 Annual Meeting of 
Shareholders are hereby incorporated by reference into Part III of this Form 10-K where such portions are referenced.  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TABLE OF CONTENTS 

PART I 

Item 1.  Business 
Item 1A.  Risk Factors 
Item 1B.  Unresolved Staff Comments 
Properties 
Item 2. 
Item 3.  Legal Proceedings 
Item 4. 

(Removed and Reserved under recent SEC rules) 

PART II 

2 
12 
23 
23 
23 
23 

Selected Financial Data 

Item 5.  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities  24 
25 
Item 6. 
26 
Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations 
39 
Item 7A.  Quantitative and Qualitative Disclosures about Market Risk 
40 
Item 8. 
40 
Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure 
40 
Item 9A.  Controls and Procedures 
41 
Item 9B.  Other Information 

Financial Statements and Supplementary Data 

PART III 

Item 10.  Directors, Executive Officers and Corporate Governance 
Item 11.  Executive Compensation 
Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 
Item 13.  Certain Relationships and Related Transactions, and Director Independence 
Item 14.  Principal Accounting Fees and Services 

PART IV 

Item 15.  Exhibits, Financial Statement Schedules 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 
SIGNATURES 
EXHIBIT INDEX 

42 
42 
42 
42 
42 

43 

F-1 
S-1 
E-1 

i 

 
 
 
 
 
 
 
 
 
 
 
 
PART I 

This document contains statements that do not relate strictly to historical fact, any of which may be forward-looking 

statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. When we use the words “anticipates,” 
“plans,” “expects” and similar expressions, we are identifying forward-looking statements. Forward-looking statements involve 
known and unknown risks and uncertainties which may cause our actual results, performance or achievements to be materially 
different from those expressed or implied by forward-looking statements. While it is impossible to identify or predict all such matters, 
these differences may result from, among other things, the inherent uncertainty of the timing and success of, and expense associated 
with, research, development, regulatory approval and commercialization of our products and product candidates, including the risks 
that clinical trials will not commence or proceed as planned; products appearing promising in early trials will not demonstrate 
efficacy or safety in larger-scale trials; clinical trial data on our products and product candidates will be unfavorable; our products 
will not receive marketing approval from regulators or, if approved, do not gain sufficient market acceptance to justify development 
and commercialization costs; competing products currently on the market or in development might reduce the commercial potential of 
our products; we, our collaborators or others might identify side effects after the product is on the market; or efficacy or safety 
concerns regarding marketed products, whether or not originating from subsequent testing or other activities by us, governmental 
regulators, other entities or organizations or otherwise, and whether or not scientifically justified, may lead to product recalls, 
withdrawals of marketing approval, reformulation of the product, additional pre-clinical testing or clinical trials, changes in labeling 
of the product, the need for additional marketing applications, declining sales or other adverse events. 

We are also subject to risks and uncertainties associated with the actions of our corporate, academic and other collaborators 

and government regulatory agencies, including risks from market forces and trends; potential product liability; intellectual property, 
litigation, environmental and other risks; the risk that we may not be able to enter into a favorable collaboration or other 
relationships or that existing or future relationships may not proceed as planned; the risk that current and pending patent protection 
for our products may be invalid, unenforceable or challenged, or fail to provide adequate market exclusivity, or that our rights to in-
licensed intellectual property may be terminated for our failure to satisfy performance milestones; the risk of difficulties in, and 
regulatory compliance relating to, manufacturing products; and the uncertainty of our future profitability. 

Risks and uncertainties also include general economic conditions, including interest- and currency exchange-rate 

fluctuations and the availability of capital; changes in generally accepted accounting principles; the impact of legislation and 
regulatory compliance; the highly regulated nature of our business, including government cost-containment initiatives and 
restrictions on third-party payments for our products; trade buying patterns; the competitive climate of our industry; and other factors 
set forth in this document and other reports filed with the U.S. Securities and Exchange Commission (SEC). In particular, we cannot 
assure you that RELISTOR® will be commercially successful or be approved in the future in other formulations, indications or 
jurisdictions, or that any of our other programs will result in a commercial product. 

We do not have a policy of updating or revising forward-looking statements, and we assume no obligation to update any 

statements as a result of new information or future events or developments. It should not be assumed that our silence over time means 
that actual events are bearing out as expressed or implied in forward-looking statements. 

Available Information 

We file annual, quarterly and current reports, proxy statements and other documents with the SEC under the Securities 
Exchange Act of 1934. The SEC maintains an Internet website that contains reports, proxy and information statements and other 
information regarding issuers, including Progenics, that file electronically with the SEC. You may obtain documents that we file with 
the SEC at http://www.sec.gov, and read and copy them at the SEC’s Public Reference Room at 100 F Street NE, Washington, DC 
20549. You may obtain information on operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. We also 
make available our annual, quarterly and current reports and proxy materials on http://www.progenics.com. 

1 

 
 
 
 
 
 
 
 
 
 
 
Item 1. Business 

Progenics Pharmaceuticals, Inc. is a biopharmaceutical company focusing on the development and commercialization of 

innovative therapeutic products to treat the unmet medical needs of patients with debilitating conditions and life-threatening diseases. 
Our principal programs are directed toward supportive care, oncology and virology. We commenced principal operations in 1988, 
became publicly traded in 1997 and throughout have been engaged primarily in research and development efforts, developing 
manufacturing capabilities, establishing corporate collaborations and raising capital. All of our operations are conducted at our 
facilities in Tarrytown, New York. 

In supportive care, our first commercial product is RELISTOR (methylnaltrexone bromide) subcutaneous injection, a first-

in-class therapy for opioid-induced constipation approved for sale in over 40 countries worldwide, including the United States, the 
European Union, Canada, Australia and Brazil. Marketing applications are pending elsewhere throughout the world.  

In October 2009, we and Wyeth Pharmaceuticals terminated our 2005 RELISTOR collaboration, as a result of which we 

regained all worldwide rights to RELISTOR. Under our Transition Agreement, Wyeth is continuing to market and sell RELISTOR for 
a U.S. Sales Period ending September 30, 2010 and an ex-U.S. Sales Period ending December 31, 2010. After this transition period, 
we will assume full control of and responsibility for future development and commercialization of RELISTOR. Shortly after the 
termination, Pfizer Inc. completed its previously-announced acquisition of Wyeth, which is now a wholly owned subsidiary of Pfizer.  

We are pursuing a range of strategic alternatives for RELISTOR, including licensing, collaboration and/or strategic alliances 

with world-wide or regional partners, U.S. commercialization of the currently-approved product on our own or with pharmaceutical 
detailing and sales organizations and/or co-promotion of the franchise with a partner using our own sales force. Our October 2008 out-
license to Ono Pharmaceutical of the rights to subcutaneous RELISTOR in Japan is unaffected by termination of the Wyeth 
collaboration. 

With the reacquisition of our rights to RELISTOR, we will be required, to the extent such tasks are not undertaken by one or 

more partners, to address new technological, clinical and commercial challenges, including, if we choose to sell and support or co-
promote RELISTOR, hiring a sales force, developing a commercial regulatory compliance program and otherwise building a 
commercial infrastructure. This will be particularly the case with the oral formulation of the drug, for which we have taken over 
development responsibilities as part of the reacquisition. We expect to continue to incur operating losses which could increase 
significantly as we expand clinical trial and other product development efforts that we choose or are obligated to undertake. See 
Supportive Care; Licenses; and Risk Factors. 

In oncology, we are conducting a phase 1 clinical trial of a fully human monoclonal antibody-drug conjugate (ADC) directed 

against prostate specific membrane antigen (PSMA), a protein found at high levels on the surface of prostate cancer cells and also on 
the neovasculature of a number of other types of solid tumors. We are also developing therapeutic vaccines designed to stimulate an 
immune response to PSMA as an immunotherapy for prostate cancer. We are engaged in research to identify possible candidates that 
may be effective in blocking certain signaling pathways that are critical in the growth of aggressive cancers. See Oncology. 

In virology, we are developing a viral-entry inhibitor -- a humanized monoclonal antibody, PRO 140 -- for human 

immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome, or AIDS. We are developing the 
subcutaneous form of PRO 140 for treatment of HIV infection, which has the potential for weekly self-administration. In our hepatitis 
C efforts, we are evaluating second-generation HCV-entry inhibitors as possible development candidates. We are also engaged in 
research regarding a prophylactic vaccine against HIV infection and researching possible candidates that are HCV-entry inhibitors. 
See Virology. 

Licensing and Collaboration. We seek out promising new products and technologies around which to build new 

development programs or enhance existing programs. We own the worldwide commercialization rights to each of our product 
candidates currently in development, and we are seeking collaboration partners to accelerate development of these candidates. 

2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Following is a summary of our principal programs and product candidates: 

Lead commercial product  

   Approved indication 

  Status  

Supportive Care 

RELISTOR-Subcutaneous injection 

Approved U.S. label: Treatment of opioid-
induced constipation (OIC) in advanced-
illness patients receiving palliative care 
when laxative therapy has not been 
sufficient (1) 

Marketed in the U.S., E.U., 
Canada, Australia, Brazil 
and elsewhere. 

Program/product candidates 

   Proposed therapeutic area 

  Status (2) 

Supportive Care 

RELISTOR-Subcutaneous injection 

RELISTOR-Oral 

Treatment of OIC in patients with chronic 
pain not related to cancer 
Treatment of OIC 

Oncology 

Prostate cancer 
PSMA ADC 
Recombinant protein vaccine (rsPSMA)  
Viral-vector vaccine (PSMA VRP) 

   Treatment of prostate cancer 

Immunotherapy for prostate cancer 
   Immunotherapy for prostate cancer 

Evaluating multiplex phosphoinositide 3-
kinase (PI3K) inhibitor development 
candidates 

Treatment of cancer 

Phase 3 

Expected to commence 
Phase 2b/3 trial in second 
half of 2010 

   Phase 1 
  Phase 1 
   Phase 1 

Research 

Virology 

Human Immunodeficiency Virus (HIV)    
PRO 140 
ProVax 

   Phase 2 (3) 
   Treatment of HIV infection 
   Treatment and prevention of HIV infection     Research 

Hepatitis C Virus (HCV) 
Evaluating HCV-entry development 

candidates 

Treatment of HCV infection 

Research 

(1) 

RELISTOR is a Wyeth trademark which Progenics will acquire upon completion of the transition period following termination of 

our 2005 collaboration. The use of RELISTOR beyond four months has not been studied. Full U.S. prescribing 
information is available at www.RELISTOR.com. In this document, “RELISTOR” may refer to methylnaltrexone as 
it has been and is being developed and commercialized by or in collaboration with Progenics. Subcutaneous 
RELISTOR has received regulatory marketing approval for specific indications, and references to RELISTOR do not 
imply that any other form or possible use of the drug has received such approval. 

(2)   Research means initial research related to specific molecular targets, synthesis of new chemical entities, assay development or        

screening for identification of lead compounds. 

  Pre-clinical means a lead compound undergoing toxicology, formulation and other testing in preparation for clinical trials. 
  Phase 1-3 clinical trials are safety and efficacy tests in humans: 

Phase 1: Initial evaluation of safety in humans; study method of action and metabolization. 
Phase 2: Evaluation of safety, dosing and activity or efficacy; continue safety evaluation. 
Phase 3: Larger scale evaluation of safety, efficacy and dosage. 

(3)   Advancement of this program is subject to our obtaining pivotal clinical-trial funding, for which we have applied to government 

agencies. 

3 

 
 
 
 
 
 
 
  
 
  
 
  
  
  
  
  
 
  
 
  
 
 
 
 
 
  
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
 
  
  
  
  
  
 
  
 
 
 
   
 
 
 
 
 
Supportive Care 

It is estimated that in 2008 nearly 250 million prescriptions for opioid-based medications such as morphine and codeine were 

written in the U.S. to control moderate-to-severe pain in patients receiving palliative care, undergoing surgery, experiencing chronic 
pain or with other medical conditions. Opioids relieve pain by interacting with receptors located in the brain and spinal cord, but also 
activate receptors in the gut, often resulting in constipation, referred to as opioid-induced constipation or OIC. As a result of OIC, 
many patients may stop or reduce their opioid therapy, opting to endure pain in order to obtain relief from their OIC and its associated 
side effects.  

RELISTOR, the first approved treatment for OIC that addresses the underlying mechanism of this condition, is a selective, 
peripherally acting, mu-opioid-receptor antagonist that decreases the constipating side effects induced by opioid pain medications in 
the gastrointestinal tract without diminishing the ability of these medications to relieve pain. Relief of OIC is an important need that is 
not adequately met by any other approved drug or intervention. Because of its chemical composition, RELISTOR has restricted access 
to the blood-brain barrier to enter the central nervous system, where pain is perceived. Outside the central nervous system, RELISTOR 
competes with opioid pain medications for binding sites on opioid receptors, displacing the pain medications only in the periphery and 
selectively “turning off” the constipating effects of those medications on the gastrointestinal tract without affecting pain relief 
occurring in the central nervous system. 

Subcutaneous RELISTOR. In the second quarter of 2008 we began earning royalties on Wyeth’s sales of RELISTOR. 

RELISTOR net sales and related royalties earned through the end of 2009 are set forth below. Our recognition of royalty revenue for 
financial reporting purposes is explained in Management’s Discussion and Analysis of Financial Condition and Results of Operations 
(MD&A) and our financial statements elsewhere in this document. 

Net Sales By Wyeth 
Royalties Earned 

First 

Quarter 

$1,900 
     280 

Second 

Quarter 

$3,200 
     487 

2009 

Third 

Quarter 

(in thousands) 
$3,300 
     497 

2008 

Fourth 

Quarter 

$3,900 
     589 

Full 

Year 

$12,300 
    1,853 

Net Sales By Wyeth 
Royalties Earned 

Second 

Quarter 

$2,100 
     321 

Third 

Quarter 

Fourth 

Quarter 

(in thousands) 

$800 
  117 

$1,500 
     227 

Full 

Year 

$4,400 
     665 

Under the Transition Agreement, Wyeth has agreed to pay us the sum of $10.0 million in six quarterly installments and is 

continuing certain ongoing development efforts for subcutaneous RELISTOR, at its expense, through September 30, 2010. Wyeth’s 
international sales and marketing obligations during the ex-U.S. Sales Period are subject to certain extension and early transition 
options available to us. Wyeth will continue to pay royalties on worldwide sales as provided in the 2005 collaboration agreement 
except that no royalties will be payable in respect of ex-U.S. sales during (i) the fourth quarter of 2010 to the extent certain financial 
targets are not met or (ii) an extended ex-U.S. Sales Period in the subject country. Principal responsibility for regulatory submissions 
and interactions for all other formulations and presentations of RELISTOR will be transferred during and as part of the transition. 
Wyeth is also providing financial resources, aggregating up to approximately $14.5 million, and/or other assistance with respect to 
agreed-upon regulatory, manufacturing and supply matters. We have agreed to purchase Wyeth’s remaining inventory of 
subcutaneous RELISTOR at the end of the Sales Periods on agreed-upon terms and conditions. 

Under its License Agreement from us, in June 2009, Ono began clinical testing in Japan of RELISTOR subcutaneous 

injection and is continuing development of the drug there. In August 2009, we and Wyeth announced submission to U.S. and E.U. 
regulators of applications for subcutaneous RELISTOR in pre-filled syringes, which are designed to ease preparation and 
administration for patients and caregivers. 

We are also developing subcutaneous RELISTOR for treatment of OIC outside the advanced-illness setting, in individuals 
with chronic pain not related to cancer. We and Wyeth recently completed enrollment in a one-year, open-label safety study, results 
from which, together with results from a previous phase 3 efficacy trial, will support planned regulatory filings in early 2011 in the 
U.S., Europe and elsewhere for approval of RELISTOR to treat OIC in the chronic-pain setting. 

Oral RELISTOR. As part of our reacquisition of RELISTOR, we have taken over development responsibilities for an oral 

4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
formulation of RELISTOR for the treatment of OIC in patients with chronic, non-cancer pain. In March 2010, we announced that we 
plan to advance oral methylnaltrexone for the treatment of OIC into late stage clinical development and will commence a phase 2b/3 
clinical trial of a methylnaltrexone tablet in chronic-pain patients in the second half of 2010. 

*   *   * 

Our oncology and virology product candidates are not as advanced in development as RELISTOR, and we do not expect any 

recurring revenues from sales or otherwise with respect to these product candidates in the near term. 

Oncology  

Prostate cancer is a common cancer affecting men in the U.S. and a leading cause of cancer deaths in men each year. The 

National Cancer Institute estimates that, based on rates from 2002-2004, one in six men will be diagnosed with this disease. The 
American Cancer Society estimated that 192,280 new cases of prostate cancer would be diagnosed and that 27,360 men would die 
from the disease in 2009 in the U.S. Conventional therapies, including radical prostatectomy, radiation, hormone therapies and 
chemotherapy, may have or increase the risk of side effects, including impotence, incontinence, high cholesterol levels and increased 
blood-clot risk, and some are generally not intended to be curative and are not actively used to treat localized, early-stage prostate 
cancer. 

Through our PSMA Development Company, we conduct research and development programs relating to antibody and 
vaccine therapies directed against prostate specific membrane antigen, or PSMA, a protein that is abundantly expressed on the surface 
of prostate cancer cells as well as cells in the newly formed blood vessels of many other solid tumors. Our fully human monoclonal 
ADC is designed to deliver a chemotherapeutic agent to cancer cells by targeting the three-dimensional structure of the PSMA protein 
on these cells and binding to and internalizing within the cell. We believe a PSMA-directed therapy may have application in prostate 
cancer and solid tumors of other types of cancer. We are conducting a phase 1 dose-escalation clinical study, commenced in 2008, to 
assess PSMA ADC’s safety, tolerability and initial clinical activity in patients with progressive, castrate-resistant prostate cancer. We 
are pursuing strategic collaborations with biopharmaceutical companies to support development of PSMA ADC. 

We have also initiated clinical study of a therapeutic vaccine utilizing viral vectors designed to deliver the PSMA gene to 

certain immune system cells in order to generate potent and specific immune responses to prostate cancer cells. In pre-clinical studies, 
this vaccine generated a potent dual response against PSMA, by both antibodies and killer T-cells, the two principal mechanisms used 
by the immune system to eliminate abnormal cells. In addition, we are developing a vaccine combining the PSMA cancer antigen 
(recombinant soluble PSMA) with an immune stimulant to induce an immune response against prostate cancer cells. 

We recently presented data from preclinical studies of novel multiplex phosphoinositide 3-kinase (PI3K) inhibitors -- 
synthetic, small-molecule compounds identified by us that, in laboratory studies, blocked both PI3K, a key regulator of one molecular 
signaling pathway, and MNK, an oncogenic kinase in the Ras pathway. We believe simultaneously blocking these interlinked cellular 
pathways may provide a strategy to combat some of the most aggressive forms of cancer. 

Virology 

HIV. An estimated 33 million people worldwide are infected with HIV, which causes slowly progressing immune system 

deterioration resulting in AIDS. Although most prevalent in sub-Saharan Africa, the current commercial market is generally limited to 
the U.S. and Europe, where it is estimated over two million people are infected. HIV infects and kills cells that have the CD4 receptor 
on their surface, including critical immune system components such as T-lymphocytes, monocytes, macrophages and dendritic cells. 
The current standard of HIV care, known as combination therapy, slows progression of disease but is not a cure. HIV’s rapid mutation 
rate results in resistance to existing drugs, while dosing inconsistencies and toxic side effects further dilute their impact. 

Viral entry inhibitors, such as our drug candidate PRO 140, represent the newest class of drugs for HIV patients. Our 
program is based on blocking the binding of HIV to CCR5, a co-receptor to CD4. CCR5 inhibitors such as PRO 140 do not block the 
entry of virus that uses CXCR4, a less ubiquitous co-receptor to CD4 that is used by some strains of HIV either exclusively or in 
addition to CCR5. At therapeutic concentrations tested to date, PRO 140 does not appear to interfere with CCR5’s normal function in 
the body’s inflammatory response. PRO 140 has been granted “Fast Track” status from the FDA, which facilitates development and 
expedites regulatory review of drugs intended to address unmet medical needs for serious or life-threatening conditions. We are 
developing the subcutaneous form of PRO 140 for treatment of HIV infection, which has the potential for weekly self-administration. 
Advancement of this program is subject to our obtaining pivotal clinical-trial funding, for which we have applied to government 
agencies. 

ProVax is our vaccine product candidate, under development for the prevention of HIV infection or as a therapeutic 

treatment for HIV-positive individuals, which is designed to stimulate the production of specific HIV neutralizing antibodies, a 

5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
process that to date has been difficult to induce with vaccines currently in development. We have previously funded this project via a 
National Institutes of Health contract, and in June 2009, were awarded a five-year NIH grant totaling up to $14.5 million to continue 
this work, subject to annual funding approvals and customary compliance obligations. 

HCV. We are evaluating second-generation HCV-entry inhibitors as possible development candidates to treat the most 
common blood-borne infection in the U.S. and a major cause of chronic liver disease. According to the U.S. Centers for Disease 
Control and Prevention, an estimated 4.1 million Americans have been infected with HCV, of whom 3.2 million are chronically 
infected, with approximately 17,000 new infections in 2007; more than 170 million people worldwide are estimated to be infected. 
Chronic hepatitis C, an under-recognized disease which can lead to cirrhosis and ultimately liver failure, is now the most common 
reason for liver transplantation and the leading cause of liver cancer in the U.S. 

Licenses 

Progenics and PSMA LLC are parties to license agreements under which we have in- and/or out-licensed rights to use certain 
technologies and materials. These licenses provide for various royalty, milestone and other payment, commercialization, sublicensing, 
patent prosecution and enforcement, insurance, indemnification and other obligations and rights, and are subject to certain reservations 
of rights. Our costs in defending patent rights, both our own and those we license, have historically not been material. Set forth below 
is a summary of the more significant of these licenses. 

RELISTOR 

•  The October 2009 Transition Agreement with Wyeth provides for the termination of our 2005 collaboration agreement and the 
transition to Progenics of responsibility for the development and commercialization of RELISTOR. Under it, Wyeth’s license of Progenics 
technology is terminated except as necessary for performance of Wyeth’s obligations during the transition period, and Wyeth has returned 
the rights to RELISTOR that we granted under the 2005 agreement. 

Wyeth is continuing to market and sell RELISTOR worldwide in accordance with an agreed-upon commercialization plan. 
Wyeth will continue to market and sell RELISTOR through September 30, 2010 in the United States and through December 31, 2010 
in the rest of the world other than Japan, subject to ex-U.S. country-by-country extensions, at Progenics’ option in certain 
circumstances, and ex-U.S. country-by-country early transition, at Progenics’ option. Wyeth shall continue to pay royalties as 
provided in the 2005 Agreement except that no royalties shall be payable in respect of ex-U.S. sales made during (i) the fourth quarter 
of 2010 to the extent that certain financial targets for such quarter are not met or (ii) an extended international sale period in the 
subject country. Wyeth has also agreed to pay us the sum of $10.0 million in installments through January, 2011, and, at its expense, is 
continuing certain ongoing development efforts for subcutaneous RELISTOR through September 30, 2010, including conducting 
specified clinical studies, and is providing support for developing specified new delivery mechanisms, in accordance with an agreed-
upon development plan. 

Progenics has assumed responsibility for development of oral RELISTOR, including conduct of clinical trials, and the 

parties are transitioning to Progenics responsibility for regulatory submissions and interactions for all other formulations and 
presentations of RELISTOR. Wyeth is providing financial resources and/or other assistance with respect to additional agreed-upon 
regulatory, manufacturing and supply matters, and Progenics has agreed to purchase Wyeth’s remaining inventory of subcutaneous 
RELISTOR at the end of its Sales Periods on agreed-upon terms and conditions. Wyeth has granted us a fully-paid up, irrevocable, 
exclusive (except as to Wyeth and its affiliates) license to relevant technology generated by Wyeth alone or in conjunction with 
Progenics during the course of our 2005 collaboration and during Wyeth’s performance of its Termination Agreement obligations, 
assigned or agreed to assign to us specified RELISTOR-related commercial intellectual property, including trademarks, Internet 
domain names and copyrights, and agreed not to assert against us or our affiliates, licensees or other third-party business partners any 
patent rights owned by Wyeth or its affiliates that would be infringed by unlicensed development or commercialization of 
RELISTOR. Progenics now controls filing, prosecution, abandonment and enforcement against third party infringers of the patent 
rights related to its technology and those licensed to it by Wyeth. The Termination Agreement also provides for transfer of 
development, manufacturing and commercialization records and other materials, mutual releases between the parties and 
indemnification, dispute resolution, non-disparagement and other customary provisions. 

The 2005 collaboration agreement was in effect until October 2009, which includes periods covered by this report. Under that 

agreement, we granted to Wyeth an exclusive, worldwide license to develop and commercialize RELISTOR and assigned certain 
agreements to it. We were responsible for developing the subcutaneous and intravenous formulations in the U.S. until they received 
regulatory approval, while Wyeth was responsible for these formulations outside the U.S. (other than Japan after execution of the Ono 
license) and for developing the oral formulation worldwide. From January 2006 to October 2009, development costs for RELISTOR were 
paid by Wyeth. We were reimbursed for out-of-pocket costs and received reimbursement for our efforts based on our employees devoted to 
them, subject to Wyeth’s audit rights and possible reconciliation. Commercialization decisions were made by Wyeth, which also was 
obligated to pay all commercialization costs, including manufacturing costs, and retained all proceeds from product sales, subject to 

6 

 
 
 
 
 
 
 
 
 
 
 
 
 
royalties and other amounts payable to us. The collaboration was overseen by committees, which coordinated or monitored the companies’ 
key strategic, development and commercialization activities. 

•  We have exclusive rights to develop and commercialize methylnaltrexone, the active ingredient of RELISTOR, under license 
from the University of Chicago. We are obligated to make milestone and royalty payments to the University that in general extend to 
the expiration of the last-to-expire relevant patent. 

•  We have licensed to Ono Pharmaceutical the rights to subcutaneous RELISTOR in Japan, where Ono is responsible for 

developing and commercializing subcutaneous RELISTOR, including conducting clinical development to support regulatory 
marketing approval. Ono will own the subcutaneous filings and approvals relating to RELISTOR in Japan. We have received a $15.0 
million upfront payment from Ono, and are entitled to receive up to an additional $20.0 million, payable upon achievement of 
development milestones. Ono is also obligated to pay us royalties and commercialization milestones on sales of subcutaneous 
RELISTOR in Japan. Ono has the option to acquire the rights to develop and commercialize other formulations of RELISTOR in 
Japan, on terms to be negotiated separately. Supervision of and consultation with respect to Ono’s development and 
commercialization responsibilities are carried out by joint committees. The Ono License contains, among other terms, provisions 
which permit termination by either party upon the occurrence of certain events. 

PSMA 

•  PSMA Development Company LLC has a collaboration agreement with Seattle Genetics, Inc., under which SGI has granted 

it an exclusive worldwide license to SGI’s proprietary ADC technology. PSMA LLC has the right to use this technology, which is 
based in part on technology licensed by SGI from third parties, to link chemotherapeutic agents to PSMA LLC’s monoclonal 
antibodies that target prostate specific membrane antigen. PSMA LLC is responsible for research, product development, 
manufacturing and commercialization of all products, and may sublicense the ADC technology to a third party manufacturer. PSMA 
LLC is obligated to make maintenance payments, milestone payments aggregating up to $14.0 million and to pay royalties to SGI and 
its licensors, as applicable, on a percentage of net sales. The SGI agreement terminates at the latest of (i) the tenth anniversary of the 
first commercial sale of each licensed product in each country or (ii) the latest date of expiration of patents underlying the licensed 
products. PSMA LLC may terminate the agreement upon advance written notice, and SGI may terminate if PSMA LLC fails to cure a 
breach of an SGI in-license within a specified time period after written notice. In addition, either party may terminate the agreement 
after written notice upon an uncured breach or in the event of bankruptcy of the other party. As of December 31, 2009, PSMA LLC 
has paid approximately $3.6 million under this agreement, including $1.0 million in milestone payments. 

•  PSMA LLC also has a worldwide exclusive licensing agreement with Abgenix (now Amgen Fremont, Inc.) to use its 
XenoMouse® technology for generating fully human antibodies to PSMA LLC’s PSMA antigen. PSMA LLC is obligated to make 
development and commercialization milestone payments with respect to products incorporating an antibody generated utilizing the 
XenoMouse technology. As of December 31, 2009, PSMA LLC has paid $850,000 under this agreement and is obligated to pay up to 
an additional $6.25 million if certain milestones are met, along with royalties based upon net sales of antibody products, if any. This 
agreement may be terminated, after an opportunity to cure, by Abgenix for cause upon 30 days prior written notice; PSMA LLC has 
the right to terminate upon 30 days prior written notice. The agreement continues until the later of the expiration of the XenoMouse 
technology patents that may result from pending patent applications or seven years from the first commercial sale of the products. 

•  PSMA LLC has a worldwide exclusive license agreement with AlphaVax Human Vaccines to use its Replicon Vector 
system to create a therapeutic prostate cancer vaccine incorporating PSMA LLC’s proprietary PSMA antigen. PSMA LLC is obligated 
to make development and commercialization milestone payments with respect to products incorporating AlphaVax’s system. As of 
December 31, 2009, PSMA LLC has paid $2.0 million under this agreement and is obligated to pay up to an additional $5.3 million if 
certain milestones are met along with annual maintenance fees and royalties based upon net sales of any products developed using 
AlphaVax’ system. This agreement may be terminated, after an opportunity to cure, by AlphaVax under specified circumstances, 
including PSMA LLC’s failure to achieve milestones; the consent of AlphaVax to revisions to the milestones due dates may not, 
however, be unreasonably withheld. PSMA LLC has the right to terminate upon 30 days prior written notice. The agreement continues 
until the later of the expiration of the patents relating to AlphaVax’s system or seven years from the first commercial sale of the 
products developed using that system. Pending U.S. and international patent applications and patent-term extensions may extend the 
period of our license rights when and if they are allowed, issued or granted. 

PRO 140; Virology 

•  Protein Design Labs (now Facet Biotech Corporation) humanized a murine monoclonal antibody developed by us 

(humanized PRO 140) and granted us related licenses under patents and patent applications, in addition to know-how. In general, these 
licenses are fully paid after the latest of (i) the tenth anniversary of the first commercial sale of a product developed thereunder, (ii) 
expiration of the last-to-expire relevant patent or (iii) the tenth anniversary of the latest filed pending patent application. Pending U.S. 

7 

 
 
 
 
 
 
 
 
 
 
 
 
 
and international patent applications and patent-term extensions may extend the period of our license rights when and if they are 
allowed, issued or granted. We may terminate the license on 60 days prior written notice, and either party may terminate on 30 days 
prior written notice for an uncured material breach (ten days for payment default). As of December 31, 2009, we have paid Facet’s 
predecessors $5.4 million, and if all milestones are achieved, we will be obligated to pay an additional approximately $2.0 million. We 
are also required to pay annual maintenance fees of $150,000 and royalties on sales of products developed under the license.  

•  We have a letter agreement with the Aaron Diamond AIDS Research Center pursuant to which we have the exclusive right 

to pursue the commercial development, directly or with a partner, of products related to HIV based on patents jointly owned by 
ADARC and us. 

Patents and Proprietary Technology 

Our policy is to protect our proprietary technology, and we consider the protection of our rights to be important to our 

business. In addition to seeking U.S. patent protection for many of our inventions, we generally file patent applications in Canada, 
Japan, European countries that are party to the European Patent Convention and additional foreign countries on a selective basis in 
order to protect the inventions that we consider to be important to the development of our foreign business. Generally, patents issued 
in the U.S. are effective: 

•    if the patent application was filed prior to June 8, 1995, for the longer of 17 years from the date of issue or 20 years from 
the earliest asserted filing date; or 

•    if the application was filed on or after June 8, 1995, for 20 years from the earliest asserted filing date. 

In addition, in certain instances, the patent term can be extended up to a maximum of five years to recapture a portion of the 

term during which the FDA regulatory review was being conducted. The duration of foreign patents varies in accordance with the 
provisions of applicable local law, although most countries provide for patent terms of 20 years from the earliest asserted filing date 
and allow patent extensions similar to those permitted in the U.S. 

We also rely on trade secrets, proprietary know-how and continuing technological innovation to develop and maintain a 

competitive position in our product areas. We generally require our employees, consultants and corporate partners who have access to 
our proprietary information to sign confidentiality agreements. 

Our patent portfolio relating to our proprietary technologies in the supportive care, oncology and virology areas is currently 

comprised, on a worldwide basis, of 154 patents that have been issued and 372 pending patent applications, which we either own 
directly or of which we are the exclusive licensee. Our issued patents expire on dates ranging from 2010 through 2026. Patent-term 
extensions and pending patent applications may extend the period of patent protection afforded our products in development. 

We are aware of intellectual property rights held by third parties that relate to products or technologies we are developing. 

For example, we are aware of others investigating methylnaltrexone and other peripheral opioid antagonists, PSMA or related 
compounds, CCR5 monoclonal antibodies and HCV viral entry inhibitors, and of patents and applications held or filed by others in 
those areas. While the validity of issued patents, patentability of claimed inventions in pending applications and applicability of any of 
them to our programs are uncertain, patent rights asserted against us could adversely affect our ability to commercialize or collaborate 
with others regarding our products. 

The research, development and commercialization of a biopharmaceutical product often present alternative development and 

optimization routes at various stages in the development process. Preferred routes cannot be identified with certainty at the outset 
because they will depend upon subsequent discoveries and test results. There are numerous third-party patents in our field, and it is 
possible that to pursue the preferred development route of one or more of our product candidates we will need to obtain a license 
under a patent, which could decrease the ultimate profitability of the applicable product. If we cannot negotiate a license, pursuit of a 
less desirable development route or termination of the entire program may be necessary. 

Government Regulation 

Progenics and its product candidates are subject to comprehensive regulation by the FDA and comparable authorities in other 

countries. Pharmaceutical regulation currently is a topic of substantial interest in lawmaking and regulatory bodies in the U.S. and 
internationally, and numerous proposals exist for changes in FDA and non-U.S. regulation of pre-clinical and clinical testing, safety, 
effectiveness, approval, manufacture, labeling, marketing, export, storage, recordkeeping, advertising, promotion and other aspects of 
biologics, small molecule drugs and medical devices, many of which, if adopted, could significantly alter our business and the current 
regulatory structure described below. 

8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FDA Regulation. FDA approval of our product candidates, including a review of the manufacturing processes and facilities 

used to produce them, are required before they may be marketed in the U.S. This process is costly, time consuming and subject to 
unanticipated delays, and a drug candidate may fail to progress at any point. 

None of our product candidates other than RELISTOR has received marketing approval from the FDA or any other 
regulatory authority. The process required by the FDA before product candidates may be approved for marketing in the U.S. generally 
involves: 

•    pre-clinical laboratory and animal tests; 

•    submission to the FDA and effectiveness of an IND before clinical trials may begin; 

•    adequate and well-controlled human clinical trials to establish the safety and efficacy of the product for its intended 
indication (animal and other nonclinical studies also are typically conducted during each phase of human clinical trials); 

•    submission to the FDA of a marketing application; and 

•    FDA review of the marketing application in order to determine, among other things, whether the product is safe and 
effective for its intended uses. 

Pre-clinical tests include laboratory evaluation of product chemistry and animal studies to gain preliminary information 

about a product’s pharmacology and toxicology and to identify safety problems that would preclude testing in humans. Products must 
generally be manufactured according to current Good Manufacturing Practices, and pre-clinical safety tests must be conducted by 
laboratories that comply with FDA good laboratory practices regulations. 

Results of pre-clinical tests are submitted to the FDA as part of an IND (Investigational New Drug) application, which must 

become effective before clinical trials may commence. The IND submission must include, among other things, a description of the 
sponsor’s investigational plan; protocols for each planned study; chemistry, manufacturing and control information; pharmacology 
and toxicology information and a summary of previous human experience with the investigational drug. 

Unless the FDA objects to, makes comments or raises questions concerning an IND, it becomes effective 30 days following 

submission, and initial clinical studies may begin. Companies often obtain affirmative FDA approval, however, before beginning such 
studies. We cannot assure you that an IND submission by us will result in FDA authorization to commence clinical trials. 

Clinical trials involve the administration of the investigational new drug to healthy volunteers or to individuals under the 

supervision of a qualified principal investigator. Clinical trials must be conducted in accordance with the FDA’s Good Clinical 
Practice requirements under protocols submitted to the FDA that detail, among other things, the objectives of the study, parameters 
used to monitor safety and effectiveness criteria to be evaluated. Each clinical study must be conducted under the auspices of an 
Institutional Review Board, which considers, among other things, ethical factors, safety of human subjects, possible liability of the 
institution and informed consent disclosure which must be made to participants in the trial. 

Clinical trials are typically conducted in three sequential phases, which may overlap. During phase 1, when the drug is 

initially administered to human subjects, the product is tested for safety, dosage tolerance, absorption, metabolism, distribution and 
excretion. Phase 2 involves studies in a limited population to evaluate preliminarily the efficacy of the product for specific, targeted 
indications, determine dosage tolerance and optimal dosage and identify possible adverse effects and safety risks. 

When a product candidate is found in phase 2 evaluation to have an effect and an acceptable safety profile, phase 3 trials are 

undertaken in order to further evaluate clinical efficacy and test for safety within an expanded population. Safety studies are conducted 
in accordance with the FDA’s International Conference on Harmonization (ICH) Guidelines. Phase 2 results do not guarantee a 
similar outcome in phase 3 trials. The FDA may suspend clinical trials at any point in this process if it concludes that clinical subjects 
are being exposed to an unacceptable health risk. 

A New Drug Application, or NDA, is an application to the FDA to market a new drug. A Biologic License Application, or 

BLA, is an application to market a biological product. The new drug or biological product may not be marketed in the U.S. until the 
FDA has approved the NDA or issued a biologic license. The NDA must contain, among other things, information on chemistry, 
manufacturing and controls; non-clinical pharmacology and toxicology; human pharmacokinetics and bioavailability; and clinical 
data. The BLA must contain, among other things, data derived from nonclinical laboratory and clinical studies which demonstrate that 
the product meets prescribed standards of safety, purity and potency, and a full description of manufacturing methods. Supplemental 
NDAs (sNDAs) are submitted to obtain regulatory approval for additional indications for a previously approved drug. 

9 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The results of the pre-clinical studies and clinical studies, the chemistry and manufacturing data, and the proposed labeling, 

among other things, are submitted to the FDA in the form of an NDA or BLA. The FDA may refuse to accept the application for filing 
if certain administrative and content criteria are not satisfied, and even after accepting the application for review, the FDA may require 
additional testing or information before approval of the application. Our analysis of the results of our clinical studies is subject to 
review and interpretation by the FDA, which may differ from our analysis. We cannot assure you that our data or our interpretation of 
data will be accepted by the FDA. In any event, the FDA must deny an NDA or BLA if applicable regulatory requirements are not 
ultimately satisfied. In addition, we may encounter delays or rejections based upon changes in applicable law or FDA policy during 
the period of product development and FDA regulatory review. If regulatory approval of a product is granted, such approval may be 
made subject to various conditions, including post-marketing testing and surveillance to monitor the safety of the product, or may 
entail limitations on the indicated uses for which it may be marketed. Finally, product approvals may be withdrawn if compliance with 
regulatory standards is not maintained or if problems occur following initial marketing. 

Both before and after approval is obtained, a product, its manufacturer and the sponsor of the marketing application for the 

product are subject to comprehensive regulatory oversight. Violations of regulatory requirements at any stage, including the pre-
clinical and clinical testing process, the approval process, or thereafter, may result in various adverse consequences, including FDA 
delay in approving or refusal to approve a product, withdrawal of an approved product from the market or the imposition of criminal 
penalties against the manufacturer or sponsor. Later discovery of previously unknown problems may result in restrictions on the 
product, manufacturer or sponsor, including withdrawal of the product from the market. New government requirements may be 
established that could delay or prevent regulatory approval of our products under development. 

Regulation Outside the U.S. Whether or not FDA approval has been obtained, approval of a pharmaceutical product by 

comparable government regulatory authorities in foreign countries must be obtained prior to marketing the product there. The 
approval procedure varies from country to country, and the time required may be longer or shorter than that required for FDA 
approval. The requirements we must satisfy to obtain regulatory approval by governmental agencies in other countries prior to 
commercialization of our products there can be rigorous, costly and uncertain, and there can be no assurance that approvals will be 
granted on a timely basis or at all. We do not currently have any facilities or personnel outside of the U.S.  

In the European Union, Canada, Australia and Japan, regulatory requirements and approval processes are similar in principle 
to those in the United States. Regulatory approval in Japan requires that clinical trials of new drugs be conducted in Japanese patients. 
Depending on the type of drug for which approval is sought, there are currently two potential tracks for marketing approval in the E.U. 
countries: mutual recognition and the centralized procedure. These review mechanisms may ultimately lead to approval in all E.U. 
countries, but each method grants all participating countries some decision-making authority in product approval. The centralized 
procedure, which is mandatory for biotechnology derived products, results in a recommendation in all member states, while the E.U. 
mutual recognition process involves country-by-country approval. 

In other countries, regulatory requirements may require additional pre-clinical or clinical testing regardless of whether FDA 
approval has been obtained. This is the case in Japan, where Ono is responsible for developing and commercializing the subcutaneous 
form of RELISTOR and where trials are required to involve patient populations which we and Wyeth have not examined in detail. If 
the particular product is manufactured in the U.S., we must also comply with FDA and other U.S. export provisions. 

In most countries outside the U.S., coverage, pricing and reimbursement approvals are also required. There can be no 

assurance that the resulting pricing of our products would be sufficient to generate an acceptable return to us. 

Other Regulation. In addition to regulations enforced by the FDA, we are also subject to regulation under the Occupational 

Safety and Health Act, the Environmental Protection Act, the Toxic Substances Control Act, the Resource Conservation and Recovery 
Act and various other current and potential future federal, state or local regulations. Our research and development involves the 
controlled use of hazardous materials, chemicals, viruses and various radioactive compounds. Although we believe that our safety 
procedures for storing, handling, using and disposing of such materials comply with the standards prescribed by applicable 
regulations, we cannot completely eliminate the risk of accidental contaminations or injury from these materials. In the event of such 
an accident, we could be held liable for any legal and regulatory violations as well as damages that result. Any such liability could 
have a material adverse effect on Progenics. 

Manufacturing 

Under the Transition Agreement with Wyeth, we will be responsible for obtaining supplies of RELISTOR after the end of 

Wyeth’s transition obligations, which include supplying us and our collaboration partner(s) with finished subcutaneous drug product 
and active pharmaceutical ingredient (API) remaining in Wyeth’s inventories. Going forward, we expect we or our collaboration 
partner(s) or licensee(s) will extend current relationships or contract with one or more other contract manufacturing organizations 
(CMOs) for supply of RELISTOR API and subcutaneous and oral finished drug product. See Risk Factors. 

10 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
We currently manufacture clinical trial supplies of our PSMA monoclonal antibody in our biologics pilot production facilities 

in Tarrytown, New York, and have engaged third-party CMOs for other portions of the PSMA ADC manufacturing process. We 
expect our manufacturing capacity will not be sufficient for all of our late-stage clinical trials or commercial-scale requirements. If we 
are unable to arrange for satisfactory CMO services, or otherwise determine to acquire additional manufacturing capacity, we will 
need to expand our manufacturing staff and facilities or obtain new facilities. In order to establish a full-scale commercial 
manufacturing facility for any of our product candidates, we would need to spend substantial additional funds, hire and train 
significant numbers of employees and comply with the extensive FDA regulations applicable to such a facility. 

Sales and Marketing 

We are pursuing a range of strategic alternatives for RELISTOR, including licensing, collaboration, strategic alliances with 

worldwide or regional partners, U.S. commercialization of the currently approved product on our own or with third-party detailing and 
sales organizations and/or co-promotion of the franchise with our own sales force. We also continue to seek strategic collaborations 
and other funding support for product candidates in our pipeline. We plan to market other products for which we obtain regulatory 
approval through co-marketing, co-promotion, licensing and distribution arrangements with third-party collaborators, and may also 
consider contracting with professional detailing and sales organizations to perform promotional and/or medical-scientific support 
functions for all our products. See Risk Factors. 

Competition 

Competition in the biopharmaceutical industry is intense and characterized by ongoing research and development and 

technological change. We face competition from many for-profit companies and major universities and research institutions in 
the U.S. and abroad. We will face competition from companies marketing existing products or developing new products for diseases 
targeted by our technologies. Many of our competitors have substantially greater resources, experience in conducting pre-clinical 
studies and clinical trials and obtaining regulatory approvals for their products, operating experience, research and development and 
marketing capabilities and production capabilities than we do. Our products under development may not compete successfully with 
existing products or products under development by other companies, universities and other institutions. Our competitors may succeed 
in obtaining FDA marketing approval for products more rapidly than we do. Drug manufacturers that are first in the market with a 
therapeutic for a specific indication generally obtain and maintain a significant competitive advantage over later entrants. Accordingly, 
we believe that the speed with which we develop products, complete the clinical trials and approval processes and ultimately supply 
commercial quantities of the products to the market will be an important competitive factor. 

RELISTOR is the first FDA-approved product for any indication involving OIC. We are, however, aware of products in pre-

clinical or clinical development that target the side effects of opioid pain therapy. Adolor Corporation markets ENTEREG® 
(alvimopan) for the treatment of postoperative ileus, and is re-evaluating an entry-stage compound for OIC in chronic-pain patients. 
Sucampo Pharmaceuticals, Inc., in collaboration with Takeda Pharmaceutical Company Limited, markets AMITIZA® (lubiprostone) 
for chronic idiopathic constipation and recently completed two phase 3 pivotal clinical trials of this drug for opioid-induced bowel 
dysfunction. In Europe Mundipharma International Limited markets TARGIN® (oxycodone/naloxone), a combination of an opioid 
and a systemic opioid antagonist. A Nektar Therapeutics-AstraZeneca collaboration has announced phase 2 results of an oral 
peripheral mu-opioid receptor antagonist in patients with OIC and is developing a related combination product. Alkermes, Inc. 
recently completed phase 1 clinical testing on an oral peripherally-restricted opioid antagonist, and has a combination product in 
preclinical testing. Theravance, Inc. recently completed phase 1 clinical testing of an oral peripheral mu-opioid antagonist. 

Radiation and surgery are two principal traditional forms of treatment for prostate cancer, to which our PSMA-based 

development efforts are directed. If the disease spreads, hormone (androgen) suppression therapy is often used to slow the cancer’s 
progression. This form of treatment, however, can eventually become ineffective. We are aware of several competitors who are 
developing alternative treatments for castrate-resistant prostate cancer, some of which are directed against PSMA. 

Currently approved drugs for the treatment of HIV infection and AIDS have shown efficacy alone and in conjunction with 
other agents, the latter of which we have not demonstrated for PRO 140. We are aware of two approved drugs, Trimeris’ FUZEON® 
and Pfizer’s SELZENTRY®, designed to treat HIV infection by blocking viral entry. 

HCV infection is most commonly treated by a combination of interferon and ribavirin. Seroconversion and/or sustained 

response to such therapies ranges from 30-50%. Tolerability and route of administration for this therapy may compromise a patient’s 
ability to persist with treatment for the 48-72 months sometimes required. We are aware of several competitors who are developing 
small molecule HCV antivirals, including viral-entry inhibition-based treatments. 

A significant amount of research in the biopharmaceutical field is also being carried out at academic and government 

institutions. An element of our research and development strategy is to in-license technology and product candidates from academic 

11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
and government institutions. These institutions are sensitive to the commercial value of their findings and pursue patent protection and 
negotiate licensing arrangements to collect royalties for use of technology they develop. These institutions may also market 
competitive commercial products on their own or in collaboration with competitors and compete with us in recruiting highly qualified 
scientific personnel. Any resulting increase in the cost or decrease in the availability of technology or product candidates from these 
institutions may adversely affect our business strategy. 

Competition with respect to our technologies and products is based on, among other things, (i) product efficacy, safety, 

reliability, method of administration, availability, price and clinical benefit relative to cost; (ii) timing and scope of regulatory 
approval; (iii) sales, marketing and manufacturing capabilities; (iv) collaborator capabilities; (v) insurance and other reimbursement 
coverage; and (vi) patent protection. 

Our competitive position will also depend on our ability to attract and retain qualified personnel, obtain patent protection or 

otherwise develop proprietary products or processes, and secure sufficient capital resources for the typically substantial period 
between technological conception and commercial sales. 

Product Liability 

The testing, manufacturing and marketing of our product candidates and products involves an inherent risk of product 

liability attributable to unwanted and potentially serious health effects. To the extent we elect to test, manufacture or market product 
candidates and products independently, we will bear the risk of product liability directly. We have obtained product liability insurance 
coverage in the amount of $10.0 million per occurrence, subject to a deductible and a $10.0 million aggregate limitation. In addition, 
where the local statutory requirements exceed the limits of our existing insurance or local policies of insurance are required, we 
maintain additional clinical trial liability insurance to meet these requirements. This insurance is subject to deductibles and coverage 
limitations. We may not be able to continue to maintain insurance at a reasonable cost, or in adequate amounts. 

Human Resources 

At December 31, 2009, we had 204 full-time employees, 32 of whom hold Ph.D. degrees, 8 of whom hold M.D. degrees and 

two of whom, including Dr. Paul J. Maddon, our Chief Executive Officer and Chief Science Officer, hold both Ph.D. and M.D. 
degrees. At that date, 158 employees were engaged in research and development, medical, regulatory affairs and manufacturing 
activities and 46 were engaged in finance, legal, administration and business development. In early 2010, we implemented a reduction 
in headcount, as a result of which we have 178 full-time employees at March 1, 2010. We consider our relations with our employees 
to be good. None of our employees is covered by a collective bargaining agreement. 

Item 1A. Risk Factors 

Our business and operations entail a variety of serious risks and uncertainties, including those described below. 

Our business is inherently risky. 

We are subject to the risks of failure inherent in the development of product candidates based on new technologies. We must 

complete successfully clinical trials and obtain regulatory approvals for our product candidates as well as additional formulations of 
and indications for RELISTOR. In the Japanese market, we must rely on Ono to conduct successful clinical trials and obtain 
regulatory approvals. Our other research and development programs, including those related to PSMA and PRO 140, involve novel 
approaches to human therapeutics. There is little precedent for the successful commercialization of products based on our 
technologies, and there are a number of technological challenges that we must overcome to complete most of our development efforts. 
We may not be able successfully to develop further any of our products. 

In addition to the risks we face in our research and development activities, and our business as a publicly held commercial 

enterprise devoted to developing and commercializing high-technology consumer products, the reacquisition of our rights to 
RELISTOR presents us with substantial new risks, including the following: 

The return of our rights to RELISTOR presents us with substantial new risks. For example, if we are unable to establish 
satisfactory relationships with one or more partners to develop and commercialize RELISTOR worldwide, we would need to 
make significant investment to establish a sales and marketing infrastructure and related staff, and in the meantime may be 
dependent on third parties for their expertise in this area. 

As a result of the termination of the Wyeth collaboration, we continue to face all of the risks to which we are currently 

subject as well as the additional risks attendant to establishing new collaborative or other relationships with one or more partners to 
develop and commercialize RELISTOR. If we are unable to do so, we will also face substantial risk in having sole responsibility for 

12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
developing and commercializing a regulated pharmaceutical product. Even with a partner, significant investment, time and managerial 
resources may be required to build a commercial infrastructure to co-promote, co-market or otherwise market, sell and support a 
pharmaceutical product. To the extent not funded from outside sources -- and in any case prior to securing any such funding -- these 
efforts will increase our cash requirements and result in a higher cash burn rate, which will have a material adverse effect on our 
financial resources and operational results. 

If, after the end of Wyeth’s involvement with the product, we undertake development and commercialization of RELISTOR 

without one or more partners, the financial and managerial resources necessary to transition to a commercial organization would 
require us to divert resources from our development efforts, including those for oral RELISTOR and our product candidates, to 
commercial ones. Even if we establish relationships with one or more partners for these tasks, we may have to divert resources from 
these programs to the extent we do not fund commercial activities in full from those external sources. 

Should we choose to commercialize RELISTOR directly, even in part of the world, we may not be successful in developing 
an effective sales, marketing and distribution infrastructure or in achieving sufficient market acceptance. Alternatively, we may also 
consider contracting with a third party professional pharmaceutical detailing and sales organization to perform all or certain marketing 
functions. To the extent we enter into distribution, co-marketing, co-promotion, detailing or licensing arrangements for our products, 
any revenues we receive will depend in substantial part or primarily on the efforts of third parties. We may not be able to control the 
amount and timing of marketing resources these third parties devote to our products. 

We are dependent on Wyeth, Ono and other business partners to develop and commercialize RELISTOR in their respective 
areas, exposing us to significant risks. As a result of termination of our collaboration, Wyeth has a limited ongoing commercial 
interest in RELISTOR during the transition. 

We are and will be dependent upon Wyeth (during the transition of its responsibilities to us pursuant to the Transition 

Agreement), Ono and any other business partner(s) with which we may collaborate in the future to perform and fund development, 
including clinical testing of RELISTOR, make related regulatory filings and manufacture and market products in their respective 
territories. Revenues from the sale of RELISTOR currently depend almost entirely upon the efforts of Wyeth, which during the 
transition has significant discretion in determining the efforts and resources it applies to sales of RELISTOR. Ono will have similar 
discretion with respect to sales in Japan. Neither may be effective in marketing such products, and these considerations may apply to 
other business partners. Our business relationships with Wyeth, Ono and other partners may not be scientifically, clinically or 
commercially successful. 

As a result of termination of our relationship with Wyeth, we are seeking alternative arrangements with one or more other 

parties to develop and commercialize RELISTOR. We might also seek alternative arrangements if our relationship with Ono were to 
terminate. We may not be able to enter into such arrangements with other suitable companies on acceptable terms or at all, in which 
event, we would have to develop sales and marketing organization and a distribution infrastructure, neither of which we currently 
have, in order to continue to develop and commercialize RELISTOR on our own. Developing these resources would be an expensive 
and lengthy process and will have a material adverse effect on our financial resources and profitability. Termination of our 
relationship with Wyeth may also seriously compromise the development program for RELISTOR and possibly our other product 
candidates, as we may experience significant delays and may have to assume full funding and other responsibility for development 
and commercialization. Any of these outcomes would result in delays in our ability to distribute RELISTOR and would increase our 
expenses. 

Wyeth’s development and commercialization obligations during the transition period are limited by the Transition Agreement 

and are less extensive than its obligations under the 2005 collaboration. The acquisition of Wyeth by Pfizer has resulted in 
management and personnel changes, and by returning our RELISTOR rights, Wyeth has a limited ongoing commercial interest in the 
RELISTOR franchise. We cannot guarantee that Wyeth’s efforts during the transition will achieve any particular level of success in 
marketing and sale, regulatory approval or clinical development of RELISTOR. 

We have had and may have future disagreements with Wyeth and Ono concerning product development, marketing 

strategies, manufacturing and supply issues, and rights relating to intellectual property. Both of them have significantly greater 
financial and managerial resources than we do, which either could draw upon in the event of a dispute. Disagreements between either 
of them and us could lead to lengthy and expensive litigation or other dispute-resolution proceedings as well as to extensive financial 
and operational consequences to us, and have a material adverse effect on our business, results of operations and financial condition. 
These considerations may apply to other business partners with which we may collaborate in the future. 

13 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We are subject to extensive regulation, which can be costly and time consuming and can subject us to unanticipated fines and 
delays. 

We and our products are subject to comprehensive regulation by the FDA and comparable authorities in other countries. 

These agencies and other entities regulate the pre-clinical and clinical testing, safety, effectiveness, approval, manufacture, labeling, 
marketing, export, storage, recordkeeping, advertising, promotion and other aspects of our products. If we violate regulatory 
requirements at any stage, whether before or after marketing approval is obtained, we may be subject to forced removal of a product 
from the market, product seizure, civil and criminal penalties and other adverse consequences. We cannot guarantee that approvals of 
proposed products, processes or facilities will be granted on a timely basis, or at all. If we experience delays or failures in obtaining 
approvals, commercialization of our product candidates will be slowed or stopped. Even if we obtain regulatory approval, the approval 
may include significant limitations on indicated uses for which the product could be marketed or other significant marketing 
restrictions. 

As a result of termination of the Wyeth collaboration, we will be responsible for complying with these regulations and will be 

required to develop an appropriate infrastructure to do so, to the extent we are unable to have such tasks performed by one or more 
business partners. 

If we are unable to negotiate collaborative agreements, or if such arrangements are delayed or are relatively unfavorable to us, 
our cash burn rate will increase and our rate of product development could decrease. 

We are pursuing significant collaborations, strategic partnerships or other arrangements to continue worldwide development 

and commercialization of RELISTOR following expiration of the transition period. Our overall business strategy includes entering 
into collaborations with pharmaceutical and biotechnology companies to develop and commercialize product candidates and 
technologies. We may not be successful in negotiating such arrangements at all, in optimal time frames or on favorable terms. In 
particular, if we do not enter into new collaborative arrangements for RELISTOR on satisfactory terms and within the timeframes 
established by the Transition Agreement -- and in any case prior to entering into any such arrangements -- we will have to devote 
more of our resources to clinical product development and product-launch activities, and our cash burn rate will increase. In that 
event, we will need to take steps to reduce our rate of product development for other programs, and may also have to seek additional 
sources of capital. If we are not successful in negotiating satisfactory new arrangements with respect to the RELISTOR franchise, 
these challenges will be substantial. We cannot assure you that any currently-contemplated or future collaboration or other initiatives 
for funding our product candidate programs will be successfully concluded. 

We lack sales and marketing infrastructure and related staff, which will require significant investment to establish and in the 
meantime may make us dependent on third parties for their expertise in this area. 

We have no established sales, marketing or distribution infrastructure. Significant investment, time and managerial resources 
are required to build the commercial infrastructure required to market, sell and support a pharmaceutical product. Should we choose to 
commercialize RELISTOR or another product directly, we may not be successful in developing an effective commercial infrastructure 
or in achieving sufficient market acceptance. Alternatively, we may choose to market and sell our products through distribution, co-
marketing, co-promotion or licensing arrangements with third parties. We may also consider contracting with third party professional 
pharmaceutical detailing and sales organizations to perform the marketing function for our products. To the extent that we enter into 
such arrangements, any revenues we receive will depend on the efforts of third parties. We may not control the amount and timing of 
marketing resources these third parties devote to our products. 

Our products may face regulatory, legal or commercial challenges even after approval. 

Even if our products receive regulatory approval: 

•    They might not obtain labeling claims necessary to make the product commercially viable (in general, labeling claims 
define the medical conditions for which a drug product may be marketed, and are therefore very important to the commercial 
success of a product), or may be required to carry “black box” or other warnings that adversely affect their commercial 
success. 

•    Approval may be limited to uses of the product for treatment or prevention of diseases or conditions that are relatively 
less financially advantageous to us than approval of greater or different scope, or subject to an FDA-imposed Risk Evaluation 
and Mitigation Strategy (REMS) that limits the sources from and conditions under which they may be dispensed. 

•    We or our collaborators might be required to undertake post-marketing trials to verify the product’s efficacy or safety. 

14 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•    We, our collaborators or others might identify side effects after the product is on the market. 

•    Efficacy or safety concerns regarding marketed products may lead to product recalls, withdrawals of marketing approval, 
reformulation of the product, additional pre-clinical testing or clinical trials, changes in labeling of the product, the need for 
additional marketing applications, declining sales or other adverse events. For example, in early 2009 the FDA identified a 
potential RELISTOR safety issue involving gastrointestinal perforation. The agency is continuing to evaluate to determine 
the need for any regulatory action; the appearance of a drug on this FDA list does not mean that the agency has concluded 
that the drug has such a risk. These potential consequences may occur whether or not the concerns originate from subsequent 
testing or other activities by us, governmental regulators, other entities or organizations or otherwise, and whether or not they 
are scientifically justified. 

•    We or our collaborators might experience manufacturing problems, which could have the same, similar or other 
consequences. 

•    We and our collaborators will be subject to ongoing FDA obligations and continuous regulatory review. 

•    If products lose previously received marketing and other approvals, our financial results would be adversely affected. 

Competing products in development may adversely affect acceptance of our products. 

We are aware of the following competition and potential competition to RELISTOR: 

•    An Adolor Corporation-GlaxoSmithKline PLC collaboration received FDA approval in 2008 for ENTEREG® 
(alvimopan), an oral opioid antagonist for postoperative ileus indicated “to accelerate the time to upper and lower 
gastrointestinal recovery following partial large or small bowel resection surgery with primary anastomosis.” Adolor is also 
re-evaluating an entry-stage compound for OIC in chronic-pain patients. 

•    A Sucampo Pharmaceuticals, Inc.-Takeda Pharmaceutical Company Limited collaboration, markets AMITIZA® 
(lubiprostone) for chronic idiopathic constipation and recently completed two phase 3 pivotal clinical trials of this drug for 
opioid-induced bowel dysfunction. 

•    In Europe, Mundipharma International Limited markets TARGIN® (oxycodone/naloxone), a combination of an opioid 
and a systemic opioid antagonist. 

•    A Nektar Therapeutics-AstraZeneca PLC collaboration recently announced phase 2 results of an oral peripheral mu-
opioid receptor antagonist in patients with OIC, and is developing a related combination product. AstraZeneca is a leader in 
gastrointestinal medicine, and their collaboration may have a time-to-market advantage over us with respect to an oral 
therapy for OIC in chronic-pain patients. 

•    Alkermes, Inc. recently completed phase 1 clinical testing of an oral peripherally-restricted opioid antagonist, and has a 
combination product in preclinical testing. 

•    Theravance, Inc. recently completed phase 1 clinical testing of and oral peripheral mu-opioid antagonist. 

Any of these approved products or product candidates may achieve a significant competitive advantage relative to our 

product. In any event, the existing or future marketing and sales capabilities of these competitors may impair our ability to compete 
effectively in the market. 

Radiation and surgery are two principal traditional forms of treatment for prostate cancer, to which our PSMA-based 

development efforts are directed. If the disease spreads, hormone (androgen) suppression therapy is often used to slow the cancer’s 
progression. This form of treatment, however, can eventually become ineffective. We are aware of several competitors who are 
developing alternative treatments for castrate-resistant prostate cancer, some of which are directed against PSMA. 

In the case of PRO 140, currently-approved drugs for the treatment of HIV infection and AIDS have shown efficacy alone 

and in conjunction with other agents, the latter of which we have not demonstrated for PRO 140. We are aware of two approved drugs, 
Trimeris’ FUZEON® and Pfizer’s SELZENTRY®, designed to treat HIV infection by blocking viral entry. We are also aware of 
various HCV drugs in pre-clinical or clinical development. 

15 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Both our immediate need to transition RELISTOR and our long-term strategy with respect to RELISTOR and our other 
product candidates may require us to obtain additional financing. Our access to capital funding is uncertain. 

As of December 31, 2009, we had cash, cash equivalents and marketable securities, including non-current portion, totaling 

$96.2 million. During the year ended December 31, 2009, we had a net loss of $30.6 million and cash used in operating activities was 
$49.8 million. Additional expenses we incur in future development and commercialization of RELISTOR will result in accelerating 
diminution of our cash and growth of our losses to the extent those expenses are not funded from outside sources. By reacquiring the 
rights to RELISTOR from Wyeth, we have become responsible for the future development and commercialization of the currently-
marketed drug after the transition and for new formulations. We do not have committed external sources of funding for these 
responsibilities, and are seeking additional external funding through collaborative, license or other agreements with one or more 
pharmaceutical companies. To the extent we are not successful in these efforts, we will have to fund them from cash on hand. 

With regard to both RELISTOR and our other product candidates, we expect to continue to incur significant development 

expenditures. We cannot predict when we will need additional funds, how much we will need, the form any financing may take (such 
as securities issuance or royalty or other financing), or whether additional funds will be available at all, especially in light of current 
conditions in global credit and financial markets. Our need for future funding will depend on numerous factors, such as the availability 
of new product development projects or other opportunities which we cannot predict, and many of which are outside our control. In 
particular, we cannot assure you that any currently-contemplated or future initiatives for funding our product candidate programs will 
be successful. 

Our access to capital funding is always uncertain. Stresses in international markets are still affecting access to capital. We 

may not be able at the necessary time to obtain additional funding on acceptable terms, or at all. Our inability to raise additional 
capital on terms reasonably acceptable to us would seriously jeopardize our business. 

If we raise funds by issuing and selling securities, it may be on terms that are not favorable to existing stockholders. If we 
raise funds by selling equity securities, current stockholders will be diluted, and new investors could have rights superior to existing 
stockholders. Raising funds by selling debt securities often entails significant restrictive covenants and repayment obligations. 

If testing does not yield successful results, our products will not be approved. 

Regulatory approvals are necessary before product candidates can be marketed. To obtain them, we or our collaborators must 

demonstrate a product’s safety and efficacy through extensive pre-clinical and clinical testing. Numerous adverse events may arise 
during, or as a result of, the testing process, such as: 

•    results of pre-clinical studies being inconclusive or not indicative of results in human clinical trials; 

•    potential products not having the desired efficacy or having undesirable side effects or other characteristics that preclude 
marketing approval or limit their commercial use if approved; 

•    after reviewing test results, we or our collaborators may abandon projects which we previously believed to be promising; 
and 

•    we, our collaborators or regulators may suspend or terminate clinical trials if we or they believe that the participating 
subjects are being exposed to unacceptable health risks. 

Clinical testing is very expensive and can take many years. Results attained in early human clinical trials may not be 

indicative of results in later clinical trials. In addition, many of our investigational or experimental drugs, such as PRO 140 and the 
PSMA product candidates, are at an early stage of development, and successful commercialization of early stage product candidates 
requires significant research, development, testing and approvals by regulators, and additional investment. Our products in the 
research or pre-clinical development stage may not yield results that would permit or justify clinical testing. Our failure to demonstrate 
adequately the safety and efficacy of a product under development would delay or prevent marketing approval, which could adversely 
affect our operating results and credibility. 

A setback in clinical development programs could adversely affect us. 

We and Wyeth continue to conduct clinical trials of RELISTOR. If the results of these or future trials are not satisfactory, we 

encounter problems enrolling subjects, clinical trial supply issues or other difficulties arise, or we experience setbacks in developing 
drug formulations, including raw material-supply, manufacturing or stability difficulties, our entire RELISTOR development program 

16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
could be adversely affected, resulting in delays in trials or regulatory filings for further marketing approval. Conducting additional 
clinical trials or making significant revisions to our clinical development plan would lead to delays in regulatory filings. If clinical 
trials indicate a serious problem with the safety or efficacy of a RELISTOR product, we, Wyeth, Ono or another partner may stop 
development or commercialization of affected products. Since RELISTOR is our only approved product, any setback of these types 
could have a material adverse effect on our business, results of operations and financial condition. 

Ono is conducting required clinical trials with Japanese patients to obtain regulatory approval of RELISTOR in Japan. There 

can be no assurance that these clinical trials will yield results adequate for that regulatory approval. 

We are conducting clinical trials of PRO 140, PSMA ADC and prostate cancer vaccine candidates. If the results of these or 

future clinical studies of our candidates are not satisfactory, we would need to reconfigure our clinical trial programs to conduct 
additional trials or abandon the program involved. Because our vaccine product candidates may be deemed to involve gene therapy, a 
relatively new technology that has not been extensively tested in humans, regulatory requirements applicable to them may be unclear, 
or subject to substantial regulatory review that delays the development and approval process generally. 

Our clinical trials could take longer than we expect. 

Projections that we publicly announce of commencement and duration of clinical trials may not be certain. For example, we 
have experienced clinical trial delays in the past as a result of slower than anticipated enrollment. These delays may recur. Delays can 
be caused by, among other things: 

•    deaths or other adverse medical events involving subjects in our clinical trials; 

•    regulatory or patent issues; 

•    interim or final results of ongoing clinical trials; 

•    failure to enroll clinical sites as expected; 

•    competition for enrollment from clinical trials conducted by others in similar indications; 

•    scheduling conflicts with participating clinicians and clinical institutions; 

•    disagreements, disputes or other matters arising from collaborations; 

•    our inability to obtain additional funding when needed; and 

•    manufacturing problems. 

We have limited experience in conducting clinical trials, and we rely on others to conduct, supervise or monitor some or all 
aspects of some of our clinical trials. In addition, certain clinical trials for our product candidates may be conducted by government-
sponsored agencies, and consequently will be dependent on governmental participation and funding. Under our 2005 collaboration 
agreement with Wyeth, Wyeth had the responsibility to conduct some of the clinical trials, including all trials outside of the United 
States other than Japan, where Ono has the responsibility for clinical trials. Upon completion of the transition, we will have 
responsibility for these trials, or will contract with other parties to conduct them. We have less control over the timing and other 
aspects of these clinical trials than if we conducted them entirely on our own. 

Our product candidates may not obtain regulatory approvals needed for marketing. 

None of our product candidates other than RELISTOR has been approved by applicable regulatory authorities for marketing. 

The process of obtaining FDA and foreign regulatory approvals often takes many years and can vary substantially based upon the 
type, complexity and novelty of the products involved. We have had only limited experience in filing and pursuing applications and 
other submissions necessary to gain marketing approvals. Products under development may never obtain marketing approval from the 
FDA or other regulatory authorities necessary for commercialization. 

Even if our products obtain marketing approval, they might not be accepted in the marketplace. 

The commercial success of our products will depend upon their acceptance by the medical community and third party payors 

as clinically useful, cost effective and safe. If health care providers believe that patients can be managed adequately with alternative, 

17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
currently available therapies, they may not prescribe our products, especially if the alternative therapies are viewed as more effective, 
as having a better safety or tolerability profile, as being more convenient to the patient or health care providers or as being less 
expensive. For pharmaceuticals administered in an institutional setting, the ability of the institution to be adequately reimbursed could 
also play a significant role in demand for our products. Even if our products obtain marketing approval, they may not achieve market 
acceptance. If any of our products do not achieve market acceptance, we will likely lose our entire investment in that product. 

Marketplace acceptance will depend in part on competition in our industry, which is intense. 

The extent to which any of our products achieves market acceptance will depend on competitive factors. Competition in our 
industry is intense, and it is accentuated by the rapid pace of technological development. There are currently marketed products that 
will compete with the product candidates that we are developing, including AIDS drugs and chemotherapy drugs for treating cancer. 
There are also product candidates in pre-clinical or clinical development that target the side effects of opioid pain therapy, and a 
marketed product for the treatment of post-operative ileus, could compete with RELISTOR. Many of our competitors have 
substantially greater research and development capabilities and experience and greater manufacturing, marketing, financial and 
managerial resources than we do. These competitors may develop products that are superior to those we are developing and render our 
products or technologies non-competitive or obsolete. If our product candidates receive marketing approval but cannot compete 
effectively in the marketplace, our operating results and financial position would suffer. Competition with respect to our technologies 
and products is based on, among other things, (i) product efficacy, safety, reliability, method of administration, availability, price and 
clinical benefit relative to cost; (ii) timing and scope of regulatory approval; (iii) sales, marketing and manufacturing capabilities; (iv) 
collaborator capabilities; (v) insurance and other reimbursement coverage; and (vi) patent protection. Competitive disadvantages in 
any of these factors could materially harm our business and financial condition. 

If we are unable to obtain sufficient quantities of the raw and bulk materials needed to make our products, our product 
development and commercialization could be slowed or stopped. 

Wyeth, during the transition, and thereafter we and/or any partner(s) may not be able to fulfill manufacturing obligations for 

RELISTOR, either on our own or through third-party suppliers. Our existing arrangements with suppliers for our other product 
candidates may not result in the supply of sufficient quantities of our product candidates needed to accomplish our clinical 
development programs, and we may not have the right or capability to manufacture sufficient quantities of these products to meet our 
needs if our suppliers are unable or unwilling to do so. We currently obtain supplies of critical raw materials used in production of our 
product candidates from single sources. We do not have long-term contracts with any of these suppliers. Any delay or disruption in the 
availability of raw materials would slow or stop product development and commercialization of the relevant product. A delay or 
disruption of supplies of RELISTOR would have a material adverse effect on the RELISTOR franchise, and therefore on our business 
as a whole. 

We have limited manufacturing capabilities, which could adversely affect our ability to commercialize products. 

Under the Transition Agreement with Wyeth, we will be responsible for obtaining supplies of RELISTOR after the end of 

Wyeth’s transition obligations, which include supplying us and our collaboration partner(s) with finished subcutaneous drug product 
and API remaining in Wyeth’s inventories. Going forward, we expect we or collaboration partner(s) or licensee(s) will extend current 
relationships or contract with one or more other CMOs for supply of RELISTOR API and subcutaneous and oral finished drug 
product. These arrangements may not be on optimally-advantageous terms, and will subject us to risks that the counterparties may not 
perform optimally in terms of quality or reliability. 

With respect to our other product candidates, our limited manufacturing capabilities may result in increased costs of 
production or delay product development or commercialization. In order to commercialize our product candidates successfully, we or 
our collaborators would need to be able to manufacture products in commercial quantities, in compliance with regulatory 
requirements, at acceptable costs and in a timely manner. Manufacture of our product candidates can be complex, difficult to 
accomplish even in small quantities, difficult to scale-up for large-scale production and subject to delays, inefficiencies and low yields 
of quality products. The cost of manufacturing some of our products may make them prohibitively expensive. If adequate supplies of 
any of our product candidates or related materials are not available to us on a timely basis or at all, our clinical trials could be seriously 
delayed, since these materials are time consuming to manufacture and cannot be readily obtained from third-party sources. 

We operate pilot-scale manufacturing facilities for the production of vaccines and recombinant proteins. These facilities will 

not be sufficient for late-stage clinical trials for these types of product candidates or commercial-scale manufacturing. We may be 
required to expand further our manufacturing staff and facilities, obtain new facilities or contract with corporate collaborators or other 
third parties to assist with production. 

In the event that we decide to establish a commercial-scale manufacturing facility for products that may be approved in the 

future, we will require substantial additional funds and will be required to hire and train significant numbers of employees and comply 

18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
with applicable regulations, which are extensive. We may not be able to build a manufacturing facility that both meets regulatory 
requirements and is sufficient for our clinical trials or commercial scale manufacturing. 

We have entered into arrangements with third parties for the manufacture of some of our product candidates and, in some 

cases, new means of administration for these product candidates. Our third-party sourcing strategy may not result in a cost-effective 
means for manufacturing products. In employing third-party manufacturers, we do not control many aspects of the manufacturing 
process, including compliance with the FDA’s current Good Manufacturing Practices and other regulatory requirements. We may not 
be able to obtain adequate supplies from third-party manufacturers in a timely fashion for development or commercialization 
purposes, and commercial quantities of products may not be available from contract manufacturers at acceptable costs. 

We are dependent on our patents and other intellectual property rights. The validity, enforceability and commercial value of 
these rights are highly uncertain. 

Our success is dependent in part upon obtaining, maintaining and enforcing patent and other intellectual property rights. The 
patent position of biotechnology and pharmaceutical firms is highly uncertain and involves many complex legal and technical issues. 
There is no clear policy involving the breadth of claims allowed, or the degree of protection afforded, under patents in this area. 
Accordingly, patent applications owned by or licensed to us may not result in patents being issued. We are aware of others who have 
patent applications or patents containing claims similar to or overlapping those in our patents and patent applications. We do not 
expect to know for several years the relative strength or scope of our patent position. Patents that we own or license may not enable us 
to preclude competitors from commercializing drugs, and consequently may not provide us with any meaningful competitive 
advantage. 

We own or have licenses to several issued patents. The issuance of a patent, however, is not conclusive as to its validity or 
enforceability, which can be challenged in litigation. Our patents may be successfully challenged. We may incur substantial costs in 
litigation seeking to uphold the validity of patents or to prevent infringement. If the outcome of litigation is adverse to us, third parties 
may be able to use our patented invention without payment to us. Third parties may also avoid our patents through design innovation. 

Most of our product candidates, including RELISTOR, PRO 140 and our PSMA and HCV program candidates, incorporate 

to some degree intellectual property licensed from third parties. We can lose the right to patents and other intellectual property 
licensed to us if the related license agreement is terminated due to a breach by us or otherwise. Our ability, and that of our 
collaboration partners, to commercialize products incorporating licensed intellectual property would be impaired if the related license 
agreements were terminated. 

The license agreements from which we derive or out-license intellectual property provide for various royalty, milestone and 

other payment, commercialization, sublicensing, patent prosecution and enforcement, insurance, indemnification and other obligations 
and rights, and are subject to certain reservations of rights. While we generally have the right to defend and enforce patents licensed 
by us, either in the first instance or if the licensor chooses not to do so, we must usually bear the cost of doing so. As a result of the 
Transition Agreement, we will be required to defend and enforce our RELISTOR patents, an obligation that Wyeth undertook in the 
2005 collaboration agreement. With respect to Japan, Ono has certain limited rights to prosecute, maintain and enforce relevant 
intellectual property. With most of our in-licenses, the licensor bears the cost of engaging in all of these activities, although we may 
share in those costs under specified circumstances. 

We also rely on unpatented technology, trade secrets and confidential information. Third parties may independently develop 

substantially equivalent information and techniques or otherwise gain access to our technology or disclose our technology, and we 
may be unable to effectively protect our rights in unpatented technology, trade secrets and confidential information. We require each 
of our employees, consultants and advisors to execute a confidentiality agreement at the commencement of an employment or 
consulting relationship with us. These agreements may, however, not provide effective protection in the event of unauthorized use or 
disclosure of confidential information. 

If we do not achieve milestones or satisfy conditions regarding some of our product candidates, we may not maintain our 
rights under related licenses. 

We are required to make substantial cash payments, achieve milestones and satisfy other conditions, including filing for and 
obtaining marketing approvals and introducing products, to maintain rights under our intellectual property licenses. Due to the nature 
of these agreements and the uncertainties of research and development, we may not be able to achieve milestones or satisfy conditions 
to which we have contractually committed, and as a result may be unable to maintain our rights under these licenses. If we do not 
comply with our license agreements, the licensors may terminate them, which could result in our losing our rights to, and therefore 
being unable to commercialize, related products. 

19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If we infringe third-party patent or other intellectual property rights, we may need to alter or terminate a product 
development program. 

There may be patent or other intellectual property rights belonging to others that require us to alter our products, pay 

licensing fees or cease certain activities. If our products infringe patent or other intellectual property rights of others, the owners of 
those rights could bring legal actions against us claiming damages and seeking to enjoin manufacturing and marketing of the affected 
products. If these legal actions are successful, in addition to any potential liability for damages, we could be required to obtain a 
license in order to continue to manufacture or market the affected products. We may not prevail in any action brought against us, and 
any license required under any rights that we infringe may not be available on acceptable terms or at all. We are aware of intellectual 
property rights held by third parties that relate to products or technologies we are developing. For example, we are aware of other 
groups investigating methylnaltrexone and other peripheral opioid antagonists, PSMA or related compounds and CCR5 monoclonal 
antibodies and of patents held, and patent applications filed, by these groups in those areas. While the validity of these issued patents, 
patentability of these pending patent applications and applicability of any of them to our programs are uncertain, if asserted against us, 
any related patent or other intellectual property rights could adversely affect our ability to commercialize our products. 

The research, development and commercialization of a biopharmaceutical often involve alternative development and 
optimization routes, which are presented at various stages in the development process. The preferred routes cannot be predicted at the 
outset of a research and development program because they will depend on subsequent discoveries and test results. There are 
numerous third-party patents in our field, and we may need to obtain a license under a patent in order to pursue the preferred 
development route of one or more of our products. The need to obtain a license would decrease the ultimate profitability of the 
applicable product. If we cannot negotiate a license, we might have to pursue a less desirable development route or terminate the 
program altogether. 

We are dependent upon third parties for a variety of functions. These arrangements may not provide us with the benefits we 
expect. 

We rely in part on third parties to perform a variety of functions. We are party to numerous agreements which place 

substantial responsibility on clinical research organizations, consultants and other service providers for the development of our 
products. We also rely on medical and academic institutions to perform aspects of our clinical trials of product candidates. In addition, 
an element of our research and development strategy is to in-license technology and product candidates from academic and 
government institutions in order to minimize investments in early research. We have entered into agreements under which we have 
depended on Wyeth and Ono, respectively, for the commercialization and development of RELISTOR. We may not be able to replace 
the benefits to us of the Wyeth agreement on attractive terms. We may not be able to maintain our relationships with Ono or new 
partners, or establish new ones on beneficial terms. We may not be able to enter new arrangements without undue delays or 
expenditures, and these arrangements may not allow us to compete successfully. 

We are exposed to product liability claims, and in the future may not be able to obtain insurance against claims at a 
reasonable cost or at all. This exposure may increase with our reacquisition of the rights to RELISTOR to the extent we are 
not indemnified by a new partner. 

Our business exposes us to product liability risks, which are inherent in the testing, manufacturing, marketing and sale of 

pharmaceutical products. We may not be able to avoid product liability exposure. If a product liability claim is successfully brought 
against us, our financial position may be adversely affected. Pursuant to the Transition Agreement, we will assume responsibility for 
product liability risks arising from marketing and sales of RELISTOR, which Wyeth had borne under our 2005 collaboration. 

Product liability insurance for the biopharmaceutical industry is generally expensive, when available at all. We have obtained 
product liability insurance in the amount of $10.0 million per occurrence, subject to a deductible and a $10.0 million annual aggregate 
limitation. Where local statutory requirements exceed the limits of our existing insurance or where local policies of insurance are 
required, we maintain additional clinical trial liability insurance to meet these requirements. Our current insurance coverage may not 
be adequate to cover claims brought against us. Some of our license and other agreements require us to obtain product liability 
insurance. Adequate insurance coverage may not be available to us at a reasonable cost in the future. 

We handle hazardous materials and must comply with environmental laws and regulations, which can be expensive and 
restrict how we do business. If we are involved in a hazardous waste spill or other accident, we could be liable for damages, 
penalties or other forms of censure. 

Our research and development work and manufacturing processes involve the use of hazardous, controlled and radioactive 

materials. We are subject to federal, state and local laws and regulations governing the use, manufacture, storage, handling and 
disposal of these materials. Despite procedures that we implement for handling and disposing of these materials, we cannot eliminate 
the risk of accidental contamination or injury. In the event of a hazardous waste spill or other accident, we could be liable for 

20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
damages, penalties or other forms of censure. We may be required to incur significant costs to comply with environmental laws and 
regulations in the future. 

If we lose key management and scientific personnel on whom we depend, our business could suffer. 

We are dependent upon our key management and scientific personnel. In particular, the loss of Dr. Maddon could cause our 

management and operations to suffer. Our employment agreement with Dr. Maddon is effective on a year-to-year basis, subject to 
automatic renewal unless either party terminates. Employment agreements do not assure the continued employment of an employee. 
We maintain key-man life insurance on Dr. Maddon which is not necessarily related to his value to the Company at any given time. 

Competition for qualified employees among companies in the biopharmaceutical industry is intense. Our future success 

depends upon our ability to attract, retain and motivate highly skilled employees. In order to commercialize our products successfully, 
we may be required to expand substantially our personnel, particularly in the areas of manufacturing, clinical trials management, 
regulatory affairs, business development and marketing. We may not be successful in hiring or retaining qualified personnel. 

If health care reform measures are enacted, our operating results and our ability to commercialize products could be 
adversely affected. 

In recent years, there have been numerous proposals to change the health care system in the U.S. and in other jurisdictions. 

Some of these proposals have included measures that would change the nature of and regulatory requirements relating to drug 
discovery, clinical testing and regulatory approvals, limit or eliminate payments for medical procedures and treatments, or subject the 
pricing of pharmaceuticals to government control. Outside the U.S., and particularly in the E.U., the pricing of prescription 
pharmaceuticals is subject to governmental control. In addition, as a result of the trend towards managed health care in the U.S., as 
well as legislative proposals to reduce government insurance programs, third-party payors are increasingly attempting to contain 
health care costs by limiting both coverage and the level of reimbursement of new drug products. Consequently, significant 
uncertainty exists as to the reimbursement status of newly approved health care products. 

If we or any of our collaborators succeed in bringing one or more of our products to market, third party payors may establish 

and maintain price levels insufficient for us to realize an appropriate return on our investment in product development. Significant 
changes in the health care system in the U.S. or elsewhere, including changes resulting from adverse trends in third-party 
reimbursement programs, could have a material adverse effect on our operating results and our ability to raise capital and 
commercialize products. 

A substantial portion of our funding has come from federal government grants and research contracts. We cannot rely on 
these grants or contracts as a continuing source of funds. 

A substantial portion of our revenues to date, albeit decreasing since 2006, has been derived from federal government grants 

and research contracts. During the last three years, we generated revenues from awards made to us by the NIH between 2003 and 
2009, to partially fund some of our programs. We cannot rely on grants or additional contracts as a continuing source of funds. Funds 
available under these grants and contracts must be applied by us toward the research and development programs specified by the 
government rather than for all our programs generally. The government’s obligation to make payments under these grants and 
contracts is subject to appropriation by the U.S. Congress for funding in each year. It is possible that Congress or the government 
agencies that administer these government research programs will decide to scale back these programs or terminate them due to their 
own budgetary constraints. Additionally, these grants and research contracts are subject to adjustment based upon the results of 
periodic audits performed on behalf of the granting authority. Consequently, the government may not award grants or research 
contracts to us in the future, and any amounts that we derive from existing awards may be less than those received to date. In those 
circumstances, we would need to provide funding on our own, obtain other funding, or scale back the affected program. In particular, 
we cannot assure you that any currently-contemplated or future efforts to obtain funding for our product candidate programs through 
government grants or contracts will be successful, or that any such arrangements which we do conclude will supply us with sufficient 
funds to complete our development programs without providing additional funding on our own or obtaining other funding. 

We have a history of operating losses, and we may never be profitable. 

We have incurred substantial losses since our inception. As of December 31, 2009, we had an accumulated deficit of $329.3 

million. We have derived no significant revenues from product sales or royalties. We may not achieve significant product sales or 
royalty revenue for a number of years, if ever. We expect to continue to incur operating losses in the future, which could increase 
significantly if we attempt to develop and commercialize RELISTOR without adequate collaboration and/or financial arrangements 
and, at the same time, expand our clinical trial programs and other product development efforts. 

21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our ability to achieve and sustain profitability is dependent in part on obtaining regulatory approval for and then 

commercializing our products, either alone or with others. We may not be able to develop and commercialize products beyond 
subcutaneous RELISTOR. Our operations may not be profitable even if any of our other products under development are 
commercialized. Additional expenses we incur in future development and commercialization of RELISTOR may cause our losses to 
grow and to accelerate. 

Our stock price has a history of volatility. You should consider an investment in our stock as risky and invest only if you can 
withstand a significant loss. 

Our stock price has a history of significant volatility. Between January 1, 2007 and December 31, 2009, our stock price has 

ranged from $30.31 to $3.53 per share. Between January 1, 2010 and March 5, 2010, it has ranged from $4.99 to $4.16 per share. 
Historically, our stock price has fluctuated through an even greater range. At times, our stock price has been volatile even in the 
absence of significant news or developments relating to us. The stock prices of biotechnology companies and the stock market 
generally have been subject to dramatic price swings in recent years, and financial and market conditions in the past two years have 
resulted in widespread pressures on securities of issuers throughout the world economy. Factors that may have a significant impact on 
the market price of our common stock include: 

•    the results of clinical trials and pre-clinical studies involving our products or those of our competitors; 

•    changes in the status of any of our drug development programs, including delays in clinical trials or program 
terminations; 

•    developments regarding our efforts to achieve marketing approval for our products; 

•    developments in our relationships with Wyeth, Ono and any other business partner(s) with which we may collaborate in 
the future regarding the development and commercialization of RELISTOR; 

•    developments in current or future relationships with other collaborative partners with respect to other products and 
candidates; 

•    announcements of technological innovations or new commercial products by us, our collaborators or our competitors; 

•    developments in patent or other proprietary rights; 

•    governmental regulation; 

•    changes in reimbursement policies or health care legislation; 

•    public concern as to the safety and efficacy of products developed by us, our collaborators or our competitors; 

•    our ability to fund ongoing operations; 

•    fluctuations in our operating results; and 

•    general market conditions. 

Purchases of our common shares pursuant to our share repurchase program may, depending on their timing, volume and 
form, result in our stock price to be higher than it would be in the absence of such purchases. If purchases under the program are 
discontinued, our stock price may fall. 

Our principal stockholders are able to exert significant influence over matters submitted to stockholders for approval. 

At December 31, 2009, our directors and executive officers and stockholders affiliated with Tudor Investment Corporation 
together beneficially owned or controlled approximately one-fifth of our outstanding shares of common stock. At that date, our five 
largest stockholders, excluding our directors and executive officers and stockholders affiliated with Tudor, beneficially owned or 
controlled in the aggregate approximately 45% of our outstanding shares. Our directors and executive officers and Tudor-related 
stockholders, should they choose to act together, could exert significant influence in determining the outcome of corporate actions 
requiring stockholder approval and otherwise control our business. This control could have the effect of delaying or preventing a 

22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
change in control of us and, consequently, could adversely affect the market price of our common stock. Other significant but 
unrelated stockholders could also exert influence in such matters. 

Anti-takeover provisions may make the removal of our Board of Directors and/or management more difficult, and 
consequently, may discourage hostile bids for control of our company that may be beneficial to our stockholders. 

Our Board of Directors is authorized, without further stockholder action, to issue from time to time shares of preferred stock 
in one or more designated series or classes. The issuance of preferred stock, as well as provisions in certain of our stock options that 
provide for acceleration of exercisability upon a change of control, and Section 203 and other provisions of the Delaware General 
Corporation Law could: 

•    make the takeover of Progenics or the removal of our Board of Directors or management more difficult; 

•    discourage hostile bids for control of Progenics in which stockholders may receive a premium for their shares of common 
stock; and 

•    otherwise dilute the rights of holders of our common stock and depress the market price of our common stock. 

If there are substantial sales of our common stock, the market price of our common stock could decline. 

Sales of substantial numbers of shares of common stock could cause a decline in the market price of our stock. We require 
substantial external funding to finance our research and development programs and may seek such funding through the issuance and 
sale of our common stock. In addition, some of our other stockholders are entitled to require us to register their shares of common 
stock for offer or sale to the public. We have filed Form S-8 registration statements registering shares issuable pursuant to our equity 
compensation plans and periodically seek to increase the amount of securities available under these plans. Any sales by existing 
stockholders or holders of options, or other rights, may have an adverse effect on our ability to raise capital and may adversely affect 
the market price of our common stock. 

Item 1B. Unresolved Staff Comments 

There were no unresolved SEC staff comments regarding our periodic or current reports under the Exchange Act as of 

December 31, 2009. 

Item 2. Properties 

As of December 31, 2009, we occupy in total approximately 131,500 square feet of laboratory, manufacturing and office 

space on a single campus in Tarrytown, New York, under five lease agreements, the majority of which expired December 31, 2009, 
while the remaining leases were to expire in either 2012 or 2014. In October 2009, we renewed to December 31, 2020, our lease 
agreement for a total of 149,300 square feet of office and laboratory space in the same campus. 

In addition to rents due under these arrangements, we are obligated to pay additional facilities charges, including utilities, 

taxes and operating expenses. 

Item 3. Legal Proceedings 

We are not a party to any material legal proceedings. 

Item 4. (Removed and Reserved under recent SEC rules) 

23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PART II 

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

Price Range of Common Stock 

Our common stock is quoted on The NASDAQ Stock Market LLC under the symbol “PGNX.” The following table sets 
forth, for the periods indicated, the high and low sales price per share of the common stock, as reported on The NASDAQ Stock 
Market LLC. Such prices reflect inter-dealer prices, without retail mark-up, markdown or commission and may not represent actual 
transactions. 

2009: 

2008: 

Fourth quarter 
Third quarter 
Second quarter 
First quarter 

Fourth quarter 
Third quarter 
Second quarter 
First quarter 

High 

$

5.48   $
6.14  
7.05  
10.81 

14.10  
17.50 
17.94 
19.25  

Low 
3.53
4.92
4.50
5.08

6.77
11.88
6.66
4.33

On March 5, 2010, the last sale price for our common stock, as reported by The NASDAQ Stock Market LLC, was $4.65. 

There were approximately 103 holders of record of our common stock as of March 5, 2010. 

Comparative Stock Performance Graph 

The graph below compares, for the past five years, the cumulative stockholder return on our common stock with the 

cumulative stockholder return of (i) the Nasdaq Stock Market (U.S.) Index and (ii) the Nasdaq Pharmaceutical Index, assuming the 
investment in each equaled $100 on December 31, 2004.  

200

150

100

50

0

D
O
L
L
A
R
S

12.31.04

12.31.05

12.31.06

12.31.07

12.31.08

12.31.09

Progenics

Nasdaq U.S. Index

Nasdaq Pharmaceutical Index

Dividends 

We have not paid any dividends since our inception and currently anticipate that all earnings, if any, will be retained for 

development of our business and that no dividends on our common stock will be declared in the foreseeable future. 

24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 6. Selected Financial Data 

The selected financial data presented below as of December 31, 2009 and 2008 and for each of the three years in the period 
ended December 31, 2009 are derived from our audited financial statements, included elsewhere herein. The selected financial data 
presented below with respect to the balance sheet data as of December 31, 2007, 2006 and 2005 and for each of the two years in the 
period ended December 31, 2006 are derived from our audited financial statements not included herein. The data set forth below 
should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and the 
Financial Statements and related Notes included elsewhere herein. 

Statement of Operations Data: 

Revenues: 

Research and development  
Royalty income 
Research and development from joint venture 
Research grants and contract 
Other revenues 

Total revenues 

Expenses: 

Research and development 
In-process research and development 
License fees – research and development 
General and administrative 
Royalty expense 
Loss in joint venture 
Depreciation and amortization 

Total expenses 
Operating loss 

Other income: 

Interest income 
Gain on sale of marketable securities 

Total other income 
Net loss before income taxes 

Income taxes 
Net loss 

Per share amounts on net loss: 

Basic and diluted 

Balance Sheet Data: 

Cash, cash equivalents and 
marketable securities 

Working capital 
Total assets 
Deferred revenue, long-term 
Other liabilities, long-term 
Total stockholders’ equity 

Years Ended December 31, 

2009 

2008 

2007 

2006 

2005 

(in thousands, except per share data) 

$44,351
2,372
-
1,968
256
48,947

49,798
-
1,058
25,106
237
-
5,078
81,277
(32,330)

1,481
237
1,718
(30,612)
-
$(30,612)

$59,885
146
-
7,460
180
67,671

82,290
-
2,830
28,834
15
-
4,609
118,578
(50,907)

6,235
-
6,235
(44,672)
-
$(44,672)

$65,455
-
-
10,075
116
75,646

95,234
-
942
27,901
-
-
3,027
127,104
(51,458)

7,770
-
7,770
(43,688)
-
$(43,688)

$58,415
-
-
11,418
73
69,906

61,711
13,209
390
22,259
-
121
1,535
99,225
(29,319)

7,701
-
7,701
(21,618)
-
$(21,618)

$        -
-
988
8,432
66
9,486

43,419
-
20,418
13,565
-
1,863
1,748
81,013
(71,527)

2,299
-
2,299
(69,228)
(201)
$(69,429)

$(0.98)

$(1.48)

$(1.59)

$(0.84)

$(3.32)

December  31, 

2009 

2008 

2007 

2006 

2005 

(in thousands) 

$96,196
95,388
113,613
-
-
107,607

$141,374
85,983
157,833
-
266
119,369

$170,370
102,979
189,539
9,131
359
147,499

$149,100
91,827
165,911
16,101
123
110,846

$173,090
137,101
184,003
-
49
112,732

25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) 

Overview 

General. We are a biopharmaceutical company focusing on the development and commercialization of innovative therapeutic 
products to treat the unmet medical needs of patients with debilitating conditions and life-threatening diseases. Our principal programs 
are directed toward supportive care, oncology and virology. We commenced principal operations in 1988, became publicly traded in 
1997 and throughout have been engaged primarily in research and development efforts, developing manufacturing capabilities, 
establishing corporate collaborations and raising capital.  

In June 2008, we began recognizing royalty income from net sales by Wyeth of subcutaneous RELISTOR. With the 
reacquisition of our rights to RELISTOR in October 2009, we will be required, to the extent such tasks are not undertaken by one or 
more partners, to address new technological, clinical and commercial challenges, including, if we choose to sell and support or co-
promote RELISTOR, hiring a sales force, developing a commercial regulatory compliance program and otherwise building a 
commercial infrastructure. We continue to monitor our program expenditures, including headcount levels, in conjunction with 
program and program candidates that we choose or are obligated to undertake. We expect to continue to incur operating losses during 
the near term. 

Our sources of revenues for the three years ended December 31, 2009 have been payments under our collaboration 
agreements and funds from research grants and contracts from the NIH related to our oncology and virology programs. From January 
2006 to October 2009, we recognized revenues from Wyeth for (i) reimbursement of our development expenses for RELISTOR as 
incurred, (ii) the $60.0 million upfront payment we received from Wyeth over the period of our development obligations, (iii) 
milestones achieved during our collaboration with Wyeth and (iv) royalties earned based on net sales of RELISTOR. To date, our 
product sales have consisted solely of limited revenues from the sale of research reagents and we expect that future sales will not 
significantly increase over current levels. 

A majority of our expenditures to date have been for research and development activities. During 2009, expenses for our 

RELISTOR and HIV research program decreased to $7.8 million and $11.8 million, respectively, compared to (i) $25.4 million and 
$39.4 million, respectively in 2008 and (ii) $41.5 million and $29.0 million, respectively in 2007. Expenses for our cancer research 
programs increased to $20.1 million during 2009 compared to (i) $10.8 million in 2008 and (ii) $16.1 million in 2007. We expect our 
expenses for RELISTOR will increase in 2010 and thereafter compared to 2009, as a result of our reacquisition of our rights to 
RELISTOR. We also expect that our non-RELISTOR development expenses will be affected by our RELISTOR expenditures. A 
portion of our non-RELISTOR expenses are reimbursed through government funding. 

At December 31, 2009, we had cash, cash equivalents and marketable securities totaling $96.2 million. We expect that cash, 

cash equivalents and marketable securities on hand at December 31, 2009 will be sufficient to fund operations at current levels beyond 
one year. Cash used in operating activities for the year ended December 31, 2009 was $49.8 million and our net loss for 2009 was 
$30.6 million. We have had recurring losses since inception. Other than potential revenues from the RELISTOR franchise, we do not 
anticipate generating significant recurring revenues, from royalties, product sales or otherwise, in the near term. Consequently, we 
may require significant additional external funding to continue our operations at their current levels in the future. Such funding may be 
derived from additional collaboration or licensing agreements with pharmaceutical or other companies or from the sale of our common 
stock or other securities to investors or government funding, but may also not be available to us on acceptable terms or at all. 

Supportive Care. Our first commercial product is RELISTOR® (methylnaltrexone bromide) subcutaneous injection, a first-in-

class therapy for opioid-induced constipation approved for sale in over 40 countries worldwide, including the U.S., E.U., Canada, 
Australia and Brazil. Marketing applications are pending elsewhere throughout the world.  

In October 2009, we and Wyeth Pharmaceuticals terminated our 2005 RELISTOR collaboration, as a result of which we 

regained all worldwide rights to RELISTOR. Under our Transition Agreement, Wyeth is continuing to market and sell RELISTOR for 
a U.S. Sales Period ending September 30, 2010 and an ex-U.S. Sales Period ending December 31, 2010. After this transition period, 
we will assume full control of and responsibility for future development and commercialization of RELISTOR. Shortly after the 
termination, Pfizer Inc. completed its previously-announced acquisition of Wyeth, which is now a wholly owned subsidiary of Pfizer.  

We are pursuing a range of strategic alternatives for RELISTOR, including licensing, collaboration and/or strategic alliances 

with world-wide or regional partners, U.S. commercialization of the currently-approved product on our own or with pharmaceutical 
detailing and sales organizations and/or co-promotion of the franchise with a partner using our own sales force. 

Under the Transition Agreement, Wyeth has agreed to pay us the sum of $10.0 million in six quarterly installments and is 

continuing certain ongoing development efforts for subcutaneous RELISTOR, at its expense, through September 30, 2010. Wyeth’s 

26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
international sales and marketing obligations during the ex-U.S. Sales Period are subject to certain extension and early transition 
options available to us. Wyeth will continue to pay royalties on worldwide sales as provided in the 2005 collaboration agreement 
except that no royalties will be payable in respect of ex-U.S. sales during (i) the fourth quarter of 2010 to the extent certain financial 
targets are not met or (ii) an extended ex-U.S. Sales Period in the subject country. We have agreed to purchase Wyeth’s remaining 
inventory of subcutaneous RELISTOR at the end of the Sales Periods on agreed-upon terms and conditions. Principal responsibility 
for regulatory submissions and interactions for all other formulations and presentations of RELISTOR will be transferred during and 
as part of the transition. Wyeth is also providing financial resources, aggregating up to approximately $14.5 million, and/or other 
assistance with respect to agreed-upon regulatory, manufacturing and supply matters. 

Our October 2008 out-license to Ono Pharmaceutical of the rights to subcutaneous RELISTOR in Japan is unaffected by 

termination of the Wyeth collaboration. In June 2009, Ono began clinical testing in Japan of RELISTOR subcutaneous injection. In 
August 2009, we and Wyeth announced submission to U.S. and E.U. regulators of applications for subcutaneous RELISTOR in pre-
filled syringes, which are designed to ease preparation and administration for patients and caregivers. 

We are also developing subcutaneous RELISTOR for treatment of OIC outside the advanced-illness setting, in individuals 
with chronic pain not related to cancer. We and Wyeth recently completed enrollment in a one-year, open-label safety study, results 
from which, together with results from a previous phase 3 efficacy trial will support planned regulatory filings in early 2011 in the 
U.S., Europe and elsewhere for approval of RELISTOR to treat OIC in the chronic-pain setting.  

As part of our reacquisition of RELISTOR, we have taken over development responsibilities for an oral formulation of 

RELISTOR for the treatment of OIC in patients with chronic, non-cancer pain. In March 2010, we announced that we plan to advance 
oral methylnaltrexone for the treatment of OIC into late stage clinical development and will commence a phase 2b/3 clinical trial of a 
methylnaltrexone tablet in chronic-pain patients in the second half of 2010. 

Our 2005 collaboration agreement with Wyeth was terminated by the October 2009 Transition Agreement, but the 2005 

agreement remained in effect for the time periods prior to termination covered by this report. Prior to the Transition Agreement, we 
received upfront, milestone and royalty payments from Wyeth, and were reimbursed for expenses we incurred in connection with the 
development of RELISTOR; manufacturing and commercialization expenses for RELISTOR were funded by Wyeth. At inception of 
the Wyeth collaboration, Wyeth paid to us a $60.0 million non-refundable upfront payment. Wyeth made $39.0 million in milestone 
payments thereafter. Costs for the development of RELISTOR incurred by Wyeth or us starting January 1, 2006 through termination of the 
2005 collaboration agreement were paid by Wyeth. We were reimbursed by Wyeth for our development costs based on the number of our 
full-time equivalent employees (FTEs) devoted to the development project, all subject to Wyeth’s audit rights and possible reconciliation. 
During the applicable royalty periods, Wyeth was obligated to pay us royalties on net sales, as defined (which included specified sales 
deductions), of RELISTOR by Wyeth throughout the world other than Japan, where we licensed rights to subcutaneous RELISTOR to 
Ono. Wyeth’s royalty obligations continue during the transition period as provided in the Transition Agreement. 

Under our License Agreement with Ono, in October 2008 we out-licensed rights to subcutaneous RELISTOR in Japan in 

return for an upfront payment of $15.0 million and the right to receive potential milestones, upon achievement of development 
responsibilities by Ono, of up to $20.0 million, commercial milestones and royalties on sales by Ono of subcutaneous RELISTOR in 
Japan. Ono also has the option to acquire from us the rights to develop and commercialize in Japan other formulations of RELISTOR 
on terms to be negotiated separately. Ono may request us to perform activities related to its development and commercialization 
responsibilities beyond our participation in joint committees and specified technology transfer related tasks which will be at its 
expense, and reimbursable at the time we perform these services. 

Future royalty and milestone payments will depend on success in development and commercialization of RELISTOR, which 

will be dependent on many factors, such as the actions of Wyeth during the transition, Ono’s efforts and those of any other business 
partner(s) with which we may collaborate, decisions by the FDA and other regulatory bodies, the outcome of clinical and other testing 
of RELISTOR, and our own efforts. Many of these matters are outside our control. In particular, we cannot guarantee that we will be 
able to successfully partner the RELISTOR franchise. We also cannot guarantee, in light of Wyeth’s limited obligations under the 
Transition Agreement, its acquisition by Pfizer and its limited ongoing commercial interest in the RELISTOR franchise, that Wyeth’s 
efforts during the transition will achieve any particular level of success in marketing and sales, regulatory approval or clinical 
development of subcutaneous RELISTOR. 

Oncology. In the area of prostate cancer, we are conducting a phase 1 clinical trial of a fully human monoclonal ADC 
directed against PSMA, a protein found at high levels on the surface of prostate cancer cells and also on the neovasculature of a 
number of other types of solid tumors. We are also developing therapeutic vaccines designed to stimulate an immune response to 
PSMA. Our PSMA programs are conducted through our wholly owned subsidiary, PSMA Development Company LLC. 

We recently presented data from preclinical studies of novel multiplex phosphoinositide 3-kinase (PI3K) inhibitors -- 
synthetic, small-molecule compounds identified by us that, in laboratory studies, blocked both PI3K, a key regulator of one molecular 

27 

 
 
 
 
 
 
 
 
 
 
 
 
 
signaling pathway, and MNK, an oncogenic kinase in the Ras pathway. We believe simultaneously blocking these interlinked cellular 
pathways may provide a strategy to combat some of the most aggressive forms of cancer. 

Virology. In the area of virology, we are developing a viral-entry inhibitor -- a humanized monoclonal antibody, PRO 140 -- 
for HIV, the virus that causes AIDS. We are developing the subcutaneous form of PRO 140 for treatment of HIV infection, which has 
the potential for weekly self-administration. Advancement of this program is subject to our obtaining pivotal clinical-trial funding, for 
which we have applied to government agencies. In our hepatitis C virus infection efforts, we are evaluating second-generation HCV-
entry inhibitors as possible development candidates. We are also engaged in research regarding a prophylactic vaccine against HIV 
infection. 

Our oncology and virology product candidates are not as advanced in development as RELISTOR, and we do not expect any 

recurring revenues from sales or otherwise with respect to these product candidates in the near term. 

Results of Operations (amounts in thousands) 

Revenues: 

Our  sources  of  revenue during  the  years  ended December  31,  2009, 2008  and  2007,  included  our 2005  collaboration  with 
Wyeth, which was effective from January 2006 to October 2009, our License Agreement with Ono, our research grants and contract 
from the NIH and, to a small extent, our sale of research reagents. In June 2008, we began recognizing royalty income from net sales 
by Wyeth of subcutaneous RELISTOR. 

Sources of Revenue 

2009 

2008 

2007 

2009 vs. 2008 

  2008 vs. 2007 

Percent Change 

Research and development 
Royalty income 
Research grants and contract 
Other revenues 

$44,351 
2,372 
1,968 
256 
$48,947 

$59,885 
146 
7,460 
180 
$67,671 

$65,455 
- 
10,075 
116 
$75,646 

(26%) 
1525% 
(74%) 
42% 
(28%) 

(9%) 
N/A 
(26%) 
55% 
(11%) 

2009 vs. 2008 

Research and development revenue: 

Wyeth Collaboration. For the three years ended December 31, 2009, we recognized as revenue: (i) in May 2007, $9,000, 

representing two milestone payments, related to the acceptance for review of applications submitted for marketing approval of a 
subcutaneous formulation of RELISTOR in the U.S. and European Union, (ii) in April 2008, $15,000 milestone payment related to the 
FDA approval of subcutaneous RELISTOR and (iii) in July 2008, $10,000 milestone payment related to the European approval of 
subcutaneous formulation of RELISTOR. We have analyzed the facts and circumstances of these milestones and believe that they met 
those criteria for revenue recognition upon achievement of the respective milestones. See Critical Accounting Policies – Revenue 
Recognition. 

During the years ended December 31, 2009 and 2008, we recognized $29,298 and $59,885, respectively, of revenue from 

Wyeth, consisting of (i) $14,562 and $10,228, respectively, of the $60,000 upfront payment we received upon entering into our 2005 
collaboration, (ii) $4,736 and $24,657, respectively, as reimbursement of our development expenses, and (iii) $10,000 and $25,000, 
respectively, under the Transition Agreement and non-refundable milestone payments. 

From the inception of the Wyeth Collaboration through December 31, 2009, we recognized revenue for the entire $60,000 

upfront payment, $104,054 as reimbursement for our development costs, and a total of $39,000 for non-refundable milestone 
payments. We do not expect to receive additional reimbursement revenue under the 2005 collaboration due to its termination. Wyeth, 
at its expense, is continuing certain ongoing development efforts for subcutaneous RELISTOR through September 30, 2010. 

We recognize a portion of the upfront payment in a reporting period in accordance with the proportionate performance 

method, which is based on the percentage of actual effort performed on our development obligations in that period relative to total 
effort expected for all of our performance obligations under the arrangement, as reflected in the most recent development plan and 
budget approved by Wyeth and us. During the third quarter of 2007, a revised budget was approved, which extended our performance 
period to the end of 2009 and, thereby, decreased the amount of revenue we are recognizing in each reporting period. The Transition 

28 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Agreement shortened the obligation period from the end of 2009 to October 2009 and we recognized the remaining $5.2 million of 
unamortized upfront payment as revenue during the fourth quarter of 2009. 

Ono License Agreement. In October 2008, we entered into a License Agreement with Ono and in November 2008, received 

an upfront payment of $15,000. We are entitled to receive potential milestones and royalty payments. During the year ended 
December 31, 2009, we recognized the $15,000 of the upfront payment as revenue, due to satisfying our performance obligations. 

Royalty income. We began earning royalties from net sales by Wyeth of subcutaneous RELISTOR in June 2008. During the 
years ended December 31, 2009 and 2008, we earned royalties of $1,853 and $665, respectively, based on the net sales of RELISTOR 
and we recognized $2,372 and $146, respectively, of royalty income. The remaining deferred royalty revenue balance of $807, as of 
September 30, 2009, was recognized as royalty income during the fourth quarter of 2009, the period in which our development 
obligations under the 2005 collaboration agreement terminated. Our royalties from net sales by Wyeth of RELISTOR, as defined, are 
based on royalty rates under our 2005 collaboration. These rates can range up to 30% of U.S. and 25% of foreign net sales at the 
highest sales levels. 

Global net sales of RELISTOR were $12.3 million for the year ended December 31, 2009, comprised of $7.1 million of U.S. 

net sales and $5.2 million of ex-U.S. net sales. Global net sales of RELISTOR were $4.4 million for the year ended December 31, 
2008, with U.S. and ex-U.S. net sales constituting $2.8 million and $1.6 million, respectively. 

Research grants and contract. In 2003, we were awarded a contract (NIH Contract) by the NIH to develop a prophylactic 
vaccine (ProVax) designed to prevent HIV from becoming established in uninfected individuals exposed to the virus. Funding under 
the NIH Contract provided for pre-clinical research, development and early clinical testing. These funds were used principally in 
connection with our ProVax HIV vaccine program. The NIH Contract expired in December 2008 and through that date, we recognized 
revenue of $15,509, including $180 for the achievement of two milestones, and in June 2009, were awarded a five-year NIH grant 
totaling up to $14.5 million to continue this work, subject to annual funding approvals and customary compliance obligations. 

Revenues from research grants and contract from the NIH decreased to $1,968 for the year ended December 31, 2009 from 

$7,460 for the year ended December 31, 2008; $1,968 and $5,251 from grants and $0 and $2,209 from the NIH Contract for the years 
ended December 31, 2009 and 2008, respectively. The decrease in grant and contract revenue resulted from fewer active grants and 
reimbursable expenses in 2009 than in 2008, and the expiration of the NIH Contract in December 2008.  

Other revenues, primarily from orders for research reagents, increased to $256 for the year ended December 31, 2009 from 

$180 for the year ended December 31, 2008.  

2008 vs. 2007 

Research revenues from collaborator. During the years ended December 31, 2008 and 2007, we recognized $59,885 and 

$65,455, respectively, of revenue from Wyeth, consisting of (i) $10,228 and $16,378, respectively, of the $60,000 upfront payment we 
received upon entering into our Collaboration in December 2005, (ii) $24,657 and $40,077, respectively, as reimbursement of our 
development expenses, and (iii) $25,000 and $9,000, respectively, of non-refundable milestone payments.  

Ono License Agreement. As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we recorded 
$15.0 million as deferred revenue – current, which was recognized as revenue during the first quarter of 2009, due to satisfying our 
performance obligations. 

Royalty income. During the year ended December 31, 2008, we earned royalties of $665, based on the net sales of 
RELISTOR and we recognized $146, of royalty income. As of December 31, 2008, we have recorded a cumulative total of $519 as 
deferred revenue – current. The $519 of deferred royalty revenue was to be recognized as royalty income over the period of our 
development obligations relating to RELISTOR, which was shortened by the Transition Agreement from the end of 2009 to October 
2009. 

Global net sales of RELISTOR, which began in June 2008, were $4.4 million in the year ended December 31, 2008. U.S. 

RELISTOR net sales totaled $2.8 million in 2008 and ex-U.S. RELISTOR net sales totaled $1.6 million in 2008.  

Research grants and contract. Revenues from research grants and contract from the NIH decreased to $7,460 for the year 

ended December 31, 2008 from $10,075 for the year ended December 31, 2007; $5,251 and $6,185 from grants and $2,209 and 
$3,890 from the NIH Contract for the years ended December 31, 2008 and 2007, respectively. The decrease in grant revenue resulted 
from fewer reimbursable expenses in 2008 than in 2007 on new and continuing grant related projects, and decreased activity under the 
NIH Contract. 

29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other revenues, primarily from higher orders for research reagents, increased to $180 for the year ended December 31, 2008 

from $116 for the year ended December 31, 2007.  

Expenses: 

Research and Development Expenses include scientific labor, supplies, facility costs, clinical trial costs, product 

manufacturing costs, royalty payments and license fees. Research and development expenses, including license fees and royalty 
expense, decreased to $51,093 for the year ended December 31, 2009 from $85,135 for the year ended December 31, 2008, and from 
$96,176 in the year ended December 31, 2007. During 2009, the decrease in research and development expenses over those in 2008 
and 2007 was primarily due to reduced RELISTOR development expenses following completion of clinical trials and reduced 
manufacturing activities for PRO 140 clinical trials, partially offset by increases in PSMA-related activities. See Liquidity and Capital 
Resources – Uses of Cash, for details of the changes in these expenses by project. From 2006 through October 2009, Wyeth 
reimbursed us for development expenses we incurred related to RELISTOR under the development plan agreed to between Wyeth and 
us. Portions of our expenses related to our HIV, HCV and PSMA programs are funded through grants and a contract from the NIH 
(see Revenues- Research Grants and Contract). The changes in research and development expense, by category of expense, are as 
follows: 

Salaries and benefits (cash) 

$21,576 

$24,383 

$24,061 

(12%) 

1% 

2009 

2008 

2007 

2009 vs. 2008 

  2008 vs. 2007 

Percent change 

2009 vs. 2008   Salaries and benefits (cash) decreased due to a decline in average headcount to 175 from 196 for the years ended 
December 31, 2009 and 2008, respectively, in the research and development, manufacturing and clinical departments as part of our 
efforts to manage costs. 

2008 vs. 2007   Salaries and benefits (cash) increased due to an increase in average headcount to 196 from 190 for the years ended 
December 31, 2008 and 2007, respectively, in the research and development, manufacturing and clinical departments. 

Share-based compensation (non-cash) 

$7,225 

$7,241 

$7,104 

0% 

2% 

2009 

2008 

2007 

  2009 vs. 2008 

  2008 vs. 2007 

Percent change 

2009 vs. 2008   Share-based compensation (non-cash) decreased for the year ended December 31, 2009 compared to the year ended 
December 31, 2008 due to lower employee stock purchase plan expense, partially offset by higher restricted stock and stock option 
plan expenses. See Critical Accounting Policies − Share-Based Payment Arrangements.  

2008 vs. 2007   Share-based compensation (non-cash) increased due to increase in employee stock purchase plan expenses, partially 
offset by lower stock options and restricted stock expenses for the year ended December 31, 2008 compared to the year ended 
December 31, 2007. See Critical Accounting Policies − Share-Based Payment Arrangements. 

Clinical trial costs 

$2,198 

$14,127 

$19,225 

(84%) 

(27%) 

2009 

2008 

2007 

  2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Clinical trial costs decreased primarily due to lower expenses for (i) RELISTOR ($9,768), from reduced clinical trial 
activities, and (ii) HIV ($2,821), due to decreased PRO 140 clinical trial activities and Other ($5), partially offset by an increase in 
expenses for Cancer ($665), all for the year ended December 31, 2009 compared to the year ended December 31, 2008.  

2008 vs. 2007   Clinical trial costs decreased primarily due to lower expenses for (i) RELISTOR ($6,686), from reduced clinical trial 
activities, and (ii) Cancer ($1,534), due to termination of a development program in 2007, partially offset by an increase in HIV 
($3,122), due to increased PRO 140 clinical trial activities, all for the year ended December 31, 2008 compared to the year ended 
December 31, 2007.  

Laboratory supplies 

$3,011 

$3,944 

$5,196 

(24%) 

(24%) 

2009 

2008 

2007 

  2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Laboratory supplies decreased due to lower expenses for HIV ($1,841), resulting from a decline in the purchases of 
drug supplies, partially offset by an increase in (i) Cancer ($842), due to higher expenses for PSMA ADC, (ii) Other projects ($62) 
and (iii) RELISTOR ($4), all for the year ended December 31, 2009 compared to the year ended December 31, 2008.  

30 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2008 vs. 2007   Laboratory supplies decreased due to lower expenses for (i) HIV ($808), resulting from a decline in the purchases of 
drug supplies, (ii) Cancer ($235), due to fewer expenses for PSMA vaccines and a terminated program, and (iii) Other projects ($209), 
all for the year ended December 31, 2008 compared to the year ended December 31, 2007.  

Contract manufacturing and 
subcontractors 

2009 

2008 

2007 

  2009 vs. 2008 

2008 vs. 2007 

Percent change 

$8,040 

$21,681 

$26,051 

(63%) 

(17%) 

2009 vs. 2008   Contract manufacturing and subcontractors decreased due to lower (i) HIV expenses ($13,514), resulting from a 
decline in manufacturing expenses for PRO 140 and (ii) RELISTOR expenses ($1,439), partially offset by increases in both Cancer 
($956), due to higher contract manufacturing expenses for PSMA ADC, and Other ($356), all for the year ended December 31, 2009 
compared to the year ended December 31, 2008. These expenses are related to the conduct of clinical trials, including manufacture by 
third parties of drug materials, testing, analysis, formulation and toxicology services, and vary as the timing and level of such services 
are required. 

2008 vs. 2007   Contract manufacturing and subcontractors decreased due to lower (i) Cancer expenses ($5,401), due to lower contract 
manufacturing expenses for PSMA ADC, and (ii) RELISTOR expenses ($2,301), partially offset by increases in both HIV ($3,052), 
due to higher contract manufacturing for PRO 140 and Other ($280), all for the year ended December 31, 2008 compared to the year 
ended December 31, 2007. These expenses are related to the conduct of clinical trials, including manufacture by third parties of drug 
materials, testing, analysis, formulation and toxicology services, and vary as the timing and level of such services are required. 

Consultants 

$1,006 

$3,514 

$4,722 

(71%) 

(26%) 

2009 

2008 

2007 

  2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Consultants expenses decreased due to lower expenses for (i) RELISTOR ($1,493), (ii) Cancer ($305), (iii) HIV 
($525) and (iv) Other projects ($185), all for the year ended December 31, 2009 compared to the year ended December 31, 2008. 
These expenses are related to the monitoring of clinical trials as well as the analysis of data from completed clinical trials and vary as 
the timing and level of such services are required. 

2008 vs. 2007   Consultants expenses decreased due to lower expenses for (i) RELISTOR ($1,579), and (ii) Other projects ($174), 
partially offset by increases in HIV ($294) and Cancer ($251), all for the year ended December 31, 2008 compared to the year ended 
December 31, 2007. These expenses are related to the monitoring of clinical trials as well as the analysis of data from completed 
clinical trials and vary as the timing and level of such services are required. 

License fees 

$1,058 

$2,830 

$942 

(63%) 

200% 

2009 

2008 

2007 

  2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   License fees decreased primarily due to a decline in expenses for HIV ($774), Cancer ($516) and RELISTOR ($482), 
all for the year ended December 31, 2009 compared to the year ended December 31, 2008. 

2008 vs. 2007   License fees increased primarily due to an increase in expenses for HIV ($1,100), RELISTOR ($522) and Cancer 
($266), all for the year ended December 31, 2008 compared to the year ended December 31, 2007. 

Royalty expense 

2009 

$237 

2008 

$15 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

$- 

1480% 

N/A 

2009 vs. 2008   We incurred $185 and $67, respectively, of royalty costs and recognized $237 and $15, respectively, of royalty 
expenses during the years ended December 31, 2009 and 2008. The remaining deferred royalty charges balance of $81, as of 
September 30, 2009, was recognized as royalty expense during the fourth quarter 2009, the period in which our development 
obligations relating to RELISTOR terminated. 

Other operating expenses 

$6,742 

$7,400 

$8,875 

(9%) 

(17%) 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

31 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2009 vs. 2008   Other operating expenses decreased for the year ended December 31, 2009 compared to the year ended December 31, 
2008, primarily due to a decrease in rent ($503), travel ($195), insurance ($82), facilities ($23) and other operating expenses ($223), 
partially offset by an increase in computer expenses ($368). 

2008 vs. 2007   Other operating expenses decreased for the year ended December 31, 2008 compared to the year ended December 31, 
2007, primarily due to a decrease in computer expenses ($1,760), insurance ($294), facilities ($186) and travel ($102), partially offset 
by an increase in other operating expenses ($21) and rent ($846). 

General and Administrative Expenses decreased to $25,106 in the year ended December 31, 2009 from $28,834 in the year 

ended December 31, 2008 and from $27,901 in the year ended December 31, 2007, as follows: 

Salaries and benefits (cash) 

$8,257 

$8,610 

$7,243 

(4%) 

19% 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Salaries and benefits (cash) decreased due to lower bonus expense for the year ended December 31, 2009 compared to 
the same period in 2008, and a decrease in average headcount to 49 from 52, in the general and administrative departments as part of 
our efforts to manage costs. 

2008 vs. 2007   Salaries and benefits (cash) increased due to compensation increases and an increase in average headcount to 52 from 
43 in the general and administrative departments for the years ended December 31, 2008 and 2007, respectively. 

Share-based compensation (non-cash) 

$5,761 

$6,892 

$8,202 

(16%) 

(16%) 

2009 

2008 

2007 

  2009 vs. 2008 

  2008 vs. 2007 

Percent change 

2009 vs. 2008   Share-based compensation (non-cash) decreased due to decrease in stock option and employee stock purchase plans 
expenses, partially offset by an increase in restricted stock expenses for the year ended December 31, 2009 compared to the year 
ended December 31, 2008. See Critical Accounting Policies −Share-Based Payment Arrangements. 

2008 vs. 2007   Share-based compensation (non-cash) decreased due to decrease in stock options and restricted stock expenses, 
partially offset by an increase in employee stock purchase plans expenses for the year ended December 31, 2008 compared to the year 
ended December 31, 2007. See Critical Accounting Policies −Share-Based Payment Arrangements. 

Consulting and professional fees 

$6,696 

$7,915 

$6,552 

(15%) 

21% 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Consulting and professional fees decreased due to a decrease in consultant fees ($790), patent fees ($540) and public 
relations ($156), which were partially offset by an increase in audit and compliance fees ($185), legal fees ($64) and other ($18), all 
for the year ended December 31, 2009 compared to the year ended December 31, 2008. 

2008 vs. 2007   Consulting and professional fees increased due to increases in consultant fees ($1,135), legal and patent fees ($132) 
and other miscellaneous costs ($164), which were partially offset by a decrease in audit and tax fees ($68), all for the year ended 
December 31, 2008 compared to the year ended December 31, 2007. 

Other operating expenses 

$4,392 

$5,417 

$5,904 

(19%) 

(8%) 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Other operating expenses decreased due to lower spending on recruiting ($234), computer software ($280), travel 
($140), taxes ($12), rent ($167), conferences and seminars ($54) and other operating expenses ($195), partially offset by an increase in 
investor relations ($57), all for the year ended December 31, 2009 compared to the year ended December 31, 2008. 

2008 vs. 2007   Other operating expenses decreased due to lower spending on recruiting ($452), facilities ($142), investor relations 
($91), taxes ($27) and other operating expenses ($44), partially offset by increases in rent ($269), all for the year ended December 31, 
2008 compared to the year ended December 31, 2007. 

32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Depreciation and amortization 

$5,078 

$4,609 

$3,027 

10% 

52% 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Depreciation and amortization expense increased to $5,078 for the year ended December 31, 2009 from $4,609 for the 
year ended December 31, 2008, due to fixed asset purchases in 2008 and leasehold improvements placed in service during 2007. 

2008 vs. 2007   Depreciation and amortization expense increased to $4,609 for the year ended December 31, 2008 from $3,027 for the 
year ended December 31, 2007, due to increased amortization of leasehold improvements. Approximately $3.8 million of leasehold 
improvements was placed in service during 2007, which is being amortized through the end of the lease term of December 31, 2009. 

Other income 

$1,718 

$6,235 

$7,770 

(72%) 

(20%) 

2009 

2008 

2007 

2009 vs. 2008 

2008 vs. 2007 

Percent change 

2009 vs. 2008   Interest income decreased to $1,481 for the year ended December 31, 2009 from $6,235 for the year ended December 
31, 2008. Interest income, as reported, is primarily the result of investment income from our marketable securities, decreased by the 
amortization of premiums we paid or increased by the amortization of discounts we received for those marketable securities. For the 
years ended December 31, 2009 and 2008, investment income decreased to $2,075 from $7,195, respectively, due to a decrease in 
interest rates, lower average balances of cash equivalents and corporate debt securities and higher average balances of money market 
funds in 2009 than in 2008. Amortization of premiums, net of discounts, was ($594) and ($960) for years ended December 31, 2009 
and 2008, respectively. In addition, other income for the year ended December 31, 2009 includes $237 of gains from sale of 
marketable securities. 

2008 vs. 2007   Interest income decreased to $6,235 for the year ended December 31, 2008 from $7,770 for the year ended December 
31, 2007. Interest income, as reported, is primarily the result of investment income from our marketable securities, decreased by the 
amortization of premiums we paid or increased by the amortization of discounts we received for those marketable securities. For the 
years ended December 31, 2008 and 2007, investment income decreased to $7,195 from $7,325, respectively, due to a decrease in 
interest rates and lower average balance of cash equivalents and marketable securities in 2008 than in 2007. Amortization of 
premiums, net of discounts, was ($960) and $445 for the years ended December 31, 2008 and 2007, respectively. 

Income Taxes: 

For the years ended December 31, 2009, 2008 and 2007, we had losses both for book and tax purposes. 

Net Loss: 

Our net loss was $30,612 for the year ended December 31, 2009, $44,672 for the year ended December 31, 2008 and $43,688 

for the year ended December 31, 2007.  

Liquidity and Capital Resources 

We have to date generated only modest amounts of product and royalty revenue, and consequently have relied principally on 

external funding and our 2005 collaboration to finance our operations. We have funded our operations since inception primarily 
through private placements of equity securities, public offerings of common stock, payments received under collaboration agreements, 
funding under government research grants and contracts, interest on investments, proceeds from the exercise of outstanding options 
and warrants, and the sale of our common stock under our two employee stock purchase plans (Purchase Plans). Advancement of the 
PRO 140 program is subject to our obtaining pivotal-clinical-trial funding, for which we have applied to government agencies. We are 
also pursuing strategic collaborations with biopharmaceutical companies for PSMA ADC.  

With the reacquisition of our rights to RELISTOR, we will be required, to the extent such tasks are not undertaken by one or 

more partners, to address new technological, clinical and commercial challenges, including, if we choose to sell and support or co-
promote RELISTOR, hiring a sales force, developing a commercial regulatory compliance program and otherwise building a 
commercial infrastructure. We continue to monitor our program expenditures, including headcount levels, in conjunction with 
program and program candidates that we choose or are obligated to undertake. We expect to continue to incur operating losses during 
the near term. We cannot forecast with any degree of certainty, however, which products or indications, if any, will be subject to 
future arrangements, or how they would affect our capital requirements. The consummation of other agreements would further allow 
us to advance other projects with current funds. We have agreed to purchase Wyeth’s remaining inventory of subcutaneous 
RELISTOR at the end of its sales periods on agreed-upon terms and conditions. If we were to undertake development and 
commercialization of RELISTOR or any other product candidate on our own without a partner, however, we would be required to 

33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
establish manufacturing and marketing capabilities and fund a sales force, which we currently do not have. 

At December 31, 2009, we had cash, cash equivalents and marketable securities, including non-current portion, totaling $96.2 

million compared with $141.4 million at December 31, 2008. We expect that our existing cash, cash equivalents and marketable 
securities at December 31, 2009 are sufficient to fund current operations beyond one year. Our cash flow from operating activities was 
negative for the years ended December 31, 2009, 2008 and 2007 due primarily to the excess of expenditures on our research and 
development programs and general and administrative costs related to those programs over cash received from collaborators and 
government grants and contracts to fund such programs, as described below. See Risk Factors. 

Sources of Cash 

Operating Activities. Our collaboration with Wyeth provided us with a $60.0 million upfront payment in December 2005. 
We also received $34.0 million in milestone payments during the three years ended December 31, 2009. In addition, from January 
2006 to October 2009, Wyeth reimbursed us for development expenses we incurred related to RELISTOR under the development plan 
agreed to between us. For the years ended December 31, 2009, 2008 and 2007, we received $4.7 million, $24.7 million and $40.1 
million, respectively, of such reimbursement. These reimbursements have ceased as a result of termination of the 2005 Wyeth 
collaboration. 

Under the Transition Agreement, Wyeth has agreed pay us the sum of $10.0 million in six quarterly installments, and its sales 

and marketing obligations during the transition will continue in the United States through a U.S. Sales Period and worldwide 
excluding Japan through the ex-U.S. Sales Period, in accordance with an agreed-upon commercialization plan. The ex-U.S. Sales 
Period is subject to certain extension and early termination options available to us. Wyeth will continue to pay royalties as provided in 
the 2005 collaboration agreement except that no royalties will be payable in respect of ex-U.S. sales during (i) the fourth quarter of 
2010 to the extent certain financial targets for that quarter are not met or (ii) an extended international sale period in the subject 
country. Wyeth is also continuing certain ongoing development efforts for RELISTOR, at its expense, through September 30, 2010, 
and is providing financial resources and/or other assistance, aggregating up to approximately $14.5 million, with respect to agreed-
upon regulatory, manufacturing and supply matters. 

Under our License Agreement with Ono, we received from Ono, in November 2008, an upfront payment of $15.0 million, 

which was recognized as revenue during the first quarter of 2009, upon satisfaction of our performance obligations, and are entitled to 
receive potential milestone payments, upon achievement of development milestones by Ono, of up to $20.0 million, commercial 
milestones and royalties on sales of subcutaneous RELISTOR in Japan. Ono is also responsible for development and 
commercialization costs for subcutaneous RELISTOR in Japan. 

We have funded our ProVax HIV vaccine program through contracts with the NIH providing for pre-clinical research, 
development and early clinical testing support. Through December 2008, we recognized revenue of $15.5 million from the NIH, 
including $0.2 million for the achievement of two milestones, and in June 2009 were awarded a new five-year NIH grant totaling up to 
$14.5 million to continue this work, subject to annual funding approvals and customary compliance obligations. 

A substantial portion of our revenues to date has been derived from federal government grants. During the years ended 

December 31, 2009, 2008 and 2007, we recognized as revenue awards made to us by the NIH between 2004 and 2009, to partially 
fund some of our programs. For the years ended December 31, 2009, 2008 and 2007, we recognized $2.0 million, $5.3 million and 
$6.2 million, respectively, of revenue from all of our NIH grants. 

Changes in Accounts receivable and Accounts payable for the years ended December 31, 2009, 2008 and 2007 resulted from 

the timing of receipts from the NIH and Wyeth, and payments made to trade vendors in the normal course of business. 

Other than amounts to be received from Wyeth, Ono and from currently approved grants, we have no committed external 

sources of capital. Other than revenues from RELISTOR, we expect no significant product revenues for a number of years, as it will 
take at least that much time, if ever, to bring our product candidates to the commercial marketing stage. 

Investing Activities. We purchase and sell marketable securities in order to provide funding for operations. Our marketable 

securities, which include corporate debt securities, securities of government-sponsored entities and auction rate securities, are 
classified as available-for-sale. 

A substantial portion of our cash and cash equivalents ($90.9 million) are guaranteed by the U.S. Treasury or Federal Deposit 

Insurance Corporation’s guarantee program. Our marketable securities ($5.3 million), which include corporate debt securities and 
auction rate securities, are classified as available for sale and include $2.9 million of securities collateralized by student loan 
obligations subsidized by the U.S. government. These investments, while rated investment grade by the Standard & Poor’s and 

34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Moody’s rating agencies and predominantly having scheduled maturities greater than ten years, are heavily concentrated in the U.S. 
financial sector, which continues to be under substantial stress. 

As a result of changes in general market conditions during 2008, we determined to reduce the principal amount of auction 

rate securities in our portfolio as they came up for auction and invest the proceeds in other securities in accordance with our 
investment guidelines. Beginning in the first quarter of 2008, auctions failed for certain of our auction rate securities because sell 
orders exceeded buy orders. As a result, at December 31, 2009, we continue to hold approximately $3.8 million of auction rate 
securities which, in the event of auction failure, are reset according to the contractual terms in the governing instruments. To date, we 
have received all scheduled interest payments on these securities. We will not realize cash in respect of the principal amount of these 
securities until a successful auction occurs, the issuer calls or restructures the underlying security, the underlying security matures and 
is paid, or a buyer outside the auction process emerges. 

We monitor markets for our investments, but cannot guarantee that additional losses will not be required to be recorded. 

Valuation of securities is subject to uncertainties that are difficult to predict, such as changes to credit ratings of the securities and/or 
the underlying assets supporting them, default rates applicable to the underlying assets, underlying collateral value, discount rates, 
counterparty risk, ongoing strength and quality of market credit and liquidity and general economic and market conditions. We do not 
believe the carrying values of our investments are other than temporarily impaired and therefore expect the positions will eventually 
be liquidated without significant loss. 

Our marketable securities are purchased and, in the case of auction rate securities, sold by third-party brokers in accordance 

with our investment policy guidelines. Our brokerage account requires that all marketable securities be held to maturity unless 
authorization is obtained from us to sell earlier. In fact, we had a history of holding all marketable securities to maturity prior to the 
second quarter of 2009, when we decided to sell a portion of our marketable securities which had scheduled maturities between the 
fourth quarter of 2009 and the third quarter of 2010. The proceeds from these sales were $24.8 million, resulting in a gain of $0.2 
million. 

We expect to recover the amortized cost of all of our investments at maturity. Because we do not anticipate having to sell 

these securities in order to operate our business and believe it is not more likely than not that we will be required to sell these 
securities before recovery of principal, we do not consider these marketable securities to be other than temporarily impaired at 
December 31, 2009. 

Financing Activities. During the years ended December 31, 2009, 2008 and 2007, we received cash of $4.9 million, $6.5 

million and $7.8 million, respectively, from the exercise of stock options by employees, directors and non-employee consultants, from 
the sale of our common stock under our Purchase Plans and from sale of common stock in public offering in 2007. The amount of 
cash we receive from these sources fluctuates commensurate with headcount levels and changes in the price of our common stock on 
the grant date for options exercised, and on the sale date for shares sold under the Purchase Plans. 

In 2007, we completed a public offering of 2.6 million shares of our common stock, pursuant to a shelf registration statement 
that had been filed with the SEC in 2006, which had registered 4.0 million shares of our common stock; that registration statement has 
now expired. We received proceeds of $57.3 million, or $22.04 per share, which was net of underwriting discounts and commissions 
of approximately $2.9 million, and paid approximately $0.2 million in other offering expenses. 

In 2008, we obtained approvals for RELISTOR from the FDA, as well as European Union, Canadian, Australian, Venezuelan 

and other regulatory authorities. Under the Transition Agreement, Wyeth, at its expense, is continuing certain ongoing development 
efforts for subcutaneous RELISTOR through September 30, 2010, and its sales and marketing obligations during the transition will 
continue in the United States through a U.S. Sales Period and worldwide excluding Japan through the ex-U.S. Sales Period, in 
accordance with an agreed-upon commercialization plan. The ex-U.S. Sales Period is subject to certain extension and early 
termination options available to us. Wyeth will continue to pay royalties as provided in the 2005 collaboration agreement except that 
no royalties will be payable in respect of ex-U.S. sales during (i) the fourth quarter of 2010 to the extent certain financial targets for 
that quarter are not met or (ii) an extended international sale period in the subject country. 

Unless we obtain regulatory approval from the FDA for additional product candidates and/or enter into agreements with 

corporate collaborators with respect to the development of RELISTOR and our additional technologies, we will be required to fund 
our operations in the future through offerings of equity or debt securities, royalty or other financing agreements, U.S. 
commercialization or co-promotion with our own sales force, and/or grants and government contracts. Adequate additional funding 
may not be available to us on acceptable terms or at all. Our inability to raise additional capital on terms reasonably acceptable to us 
may seriously jeopardize the future success of our business. 

35 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Uses of Cash 

Operating Activities. The majority of our cash has been used to advance our research and development programs. We 
currently have major research and development programs in supportive care, oncology and virology, and are conducting several 
smaller research projects in those latter areas. Our total expenses for research and development from inception through December 31, 
2009 have been approximately $529.6 million. For various reasons, including the early stage of certain of our programs, the timing 
and results of our clinical trials, our dependence in certain instances on third parties and the uncertainty of the specific nature of 
RELISTOR-related future arrangements and relationships following termination of the Wyeth collaboration, many of which are 
outside of our control, we cannot estimate the total remaining costs to be incurred and timing to complete all our research and 
development programs.  

For the years ended December 31, 2009, 2008 and 2007, research and development costs incurred, by project, were as 

follows: 

RELISTOR 
HIV 
Cancer 
Other programs 

Total 

2009 

For the Year Ended December 31, 
2008 
(in millions) 

2007 

       $   7.8 
11.8 
20.1 
11.4 
       $   51.1 

       $   25.4 
39.4 
10.8 
9.5 
       $   85.1 

     $   41.5 
29.0 
16.1 
9.6 
       $   96.2 

We will require additional funding to continue our research and product development programs, conduct pre-clinical studies 

and clinical trials, fund operating expenses, pursue regulatory approvals for our product candidates, file and prosecute patent 
applications and enforce or defend patent claims, if any, and fund product in-licensing and any possible acquisitions. 

Investing Activities. During the years ended December 31, 2009, 2008 and 2007, we have spent $0.9 million, $2.2 million 

and $5.2 million, respectively, on capital expenditures. These reductions have resulted from our continuing efforts to manage costs in 
light of available resources and prospects. These expenditures have been primarily related to the purchase of laboratory equipment for 
our research and development projects, for the manufacture of research and clinical products. 

Contractual Obligations 

Our funding requirements, both for the next 12 months and beyond, will include required payments under operating leases 

and licensing and collaboration agreements. The following table summarizes our contractual obligations as of December 31, 2009 for 
future payments under these agreements: 

Operating leases 
License and collaboration agreements (1) 

Total 
_______________ 

Total 

2010 

$       46.0 
   81.9 
$     127.9 

$     3.7   
      0.8 
$     4.5 

Payments due by December 31, 
2011-2012 

2013-2014 

  Thereafter 

(in millions) 

  $       7.7 
       1.8 
  $       9.5 

  $        8.0 
       4.3 
  $      12.3 

  $         26.6 
     75.0 
  $       101.6 

(1)  Assumes attainment of milestones covered under each agreement, including those to which PSMA LLC is a party. The timing of the achievement of the 
related milestones is highly uncertain, and accordingly the actual timing of payments, if any, is likely to vary, perhaps significantly, relative to the timing 
contemplated by this table. 

We periodically assess the scientific progress and merits of each of our programs to determine if continued research and 
development is commercially and economically viable. Certain of our programs have been terminated due to the lack of scientific 
progress and prospects for ultimate commercialization. Because of the uncertainties associated with research and development in these 
programs, the duration and completion costs of our research and development projects are difficult to estimate and are subject to 
considerable variation. Our inability to complete research and development projects in a timely manner or failure to enter into 
collaborative agreements could significantly increase capital requirements and adversely affect our liquidity. 

Our cash requirements may vary materially from those now planned because of results of research and development and 

product testing, changes in existing relationships or new relationships with licensees, licensors or other collaborators, changes in the 
focus and direction of our research and development programs, competitive and technological advances, the cost of filing, 

36 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
prosecuting, defending and enforcing patent claims, the regulatory approval process, manufacturing and marketing and other costs 
associated with the commercialization of products following receipt of regulatory approvals and other factors. 

The above discussion contains forward-looking statements based on our current operating plan and the assumptions on which 

it relies. There could be deviations from that plan that would consume our assets earlier than planned. 

Off-Balance Sheet Arrangements and Guarantees 

We have no obligations under off-balance sheet arrangements and do not guarantee the obligations of any other 

unconsolidated entity. 

Critical Accounting Policies 

We prepare our financial statements in conformity with accounting principles generally accepted in the United States of 

America. Our significant accounting policies are disclosed in Note 2 to our financial statements included in this Annual Report on 
Form 10-K for the year ended December 31, 2009. The selection and application of these accounting principles and methods requires 
us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as certain 
financial statement disclosures. On an ongoing basis, we evaluate our estimates. We base our estimates on historical experience and on 
various other assumptions that are believed to be reasonable under the circumstances. The results of our evaluation form the basis for 
making judgments about the carrying values of assets and liabilities that are not otherwise readily apparent. While we believe that the 
estimates and assumptions we use in preparing the financial statements are appropriate, these estimates and assumptions are subject to 
a number of factors and uncertainties regarding their ultimate outcome and, therefore, actual results could differ from these estimates. 

We have identified our critical accounting policies and estimates below. These are policies and estimates that we believe are 

the most important in portraying our financial condition and results of operations, and that require our 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. We have 
discussed the development, selection and disclosure of these critical accounting policies and estimates with the Audit Committee of 
our Board of Directors. 

Revenue Recognition. We recognize revenue from all sources based on the provisions of the SEC’s Staff Accounting 

Bulletin (SAB) No. 104 (SAB 104) and ASC 605 Revenue Recognition. 

Collaborations may contain substantive milestone payments to which we apply the substantive milestone method 
(Substantive Milestone Method). Substantive milestone payments are considered to be performance payments that are recognized 
upon achievement of the milestone only if all of the following conditions are met: (i) the milestone payment is non-refundable, (ii) 
achievement of the milestone involves a degree of risk and was not reasonably assured at the inception of the arrangement, (iii) 
substantive effort is involved in achieving the milestone, (iv) the amount of the milestone payment is reasonable in relation to the 
effort expended or the risk associated with achievement of the milestone, and (v) a reasonable amount of time passes between the 
upfront license payment and the first milestone payment as well as between each subsequent milestone payment. 

Determination as to whether a milestone meets the aforementioned conditions involves management’s judgment. If any of 

these conditions are not met, the resulting payment would not be considered a substantive milestone and, therefore, the resulting 
payment would be part of the consideration and be recognized as revenue as such performance obligations are performed. 

Royalty revenue is recognized based upon net sales of related licensed products. Royalty revenue is recognized in the period 
the sales occur, provided that the royalty amounts are fixed or determinable, collection of the related receivable is reasonably assured 
and we have no remaining performance obligations under the arrangement providing for the royalty. If royalties are received when we 
have remaining performance obligations, they would be attributed to the services being provided under the arrangement and, therefore, 
recognized as such obligations are performed under the proportionate performance method. 

We recognize upfront license payments as revenue upon delivery of the license only if the license had standalone value and 
the fair value of the undelivered performance obligations, typically including research or steering or other committee services, could 
be determined. If the fair value of the undelivered performance obligations could be determined, such obligations would then be 
accounted for separately as performed. If the license is considered to either (i) not have standalone value, or (ii) have standalone value 
but the fair value of any of the undelivered performance obligations could not be determined, the upfront license payments would be 
recognized as revenue over the estimated period of when our performance obligations are performed. 

Under the proportionate performance method we recognize revenue provided that we can reasonably estimate the level of 
effort required to complete our performance obligations under an arrangement and such performance obligations are provided on a 
best-efforts basis. Direct labor hours or full-time equivalents will typically be used as the measure of performance. Revenue is 

37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
recognized in any period as the percent of actual effort expended in that period relative to total effort for all of our performance 
obligations under the arrangement. Significant judgment and estimates are required in determining the nature and assignment of tasks 
to be accomplished by each of the parties and the level of effort required for us to complete our performance obligations under the 
arrangement. The nature and assignment of tasks to be performed by each party involves the preparation, discussion and approval by 
the parties of a development plan and budget. 

Amounts not expected to be recognized within one year of the balance sheet date are classified as long-term deferred 
revenue. The estimate of the classification of deferred revenue as short-term or long-term is based upon management’s current 
operating budget with the collaborator for the total effort required to complete our performance obligations under the arrangement.  

As the development programs progress over time, the development budgets, including the amount of FTEs, may be revised, 

resulting in a change to the development period or costs. Changes in the development estimates are likely to affect the amount of 
revenue recognized in the period of change and each year in the future as compared to prior periods. Under the Wyeth collaboration, 
we recognized $6.2 million less revenue from the $60.0 million upfront payment during the year ended December 31, 2008 compared 
to the amounts recognized in 2007 due to an extension of the development budget from December 31, 2008 to December 31, 2009. 
Conversely, we recognized $4.3 million more revenue during 2009 compared to amounts recognized in 2008 due to the increase in the 
percent of actual effort expended in 2009 relative to the total remaining effort to complete development. 

Share-Based Payment Arrangements. Our share-based compensation to employees includes non-qualified stock options, 

restricted stock and shares issued under our Purchase Plans, which are compensatory under ASC 718 Compensation – Stock 
Compensation. We account for share-based compensation to non-employees, including non-qualified stock options and restricted 
stock, in accordance with ASC 505 Equity. 

The fair value of each non-qualified stock option award is estimated on the date of grant using the Black-Scholes option 

pricing model. 

The model requires input assumptions with respect to (i) expected volatility of our common stock, which is based upon the 

daily quoted market prices on The NASDAQ Stock Market LLC over a period equal to the expected term, (ii) the period of time over 
which employees, officers, our chief executive officer, directors and non-employee consultants are expected to hold their options prior 
to exercise, (iii) zero expected dividend yield due to never having paid dividends and not expecting to pay dividends in the future, and 
(iv) risk-free interest rates for periods within the expected term of the options, which are based on the U.S. Treasury yield curve in 
effect at the time of grant.  

Historical volatilities are based upon daily quoted market prices of our common stock on The NASDAQ Stock Market LLC 

over a period equal to the expected term of the related equity instruments. We rely only on historical volatility since it provides the 
most reliable indication of future volatility. Future volatility is expected to be consistent with historical; historical volatility is 
calculated using a simple average calculation; historical data is available for the length of the option’s expected term and a sufficient 
number of price observations are used consistently. Since our stock options are not traded on a public market, we do not use implied 
volatility. 

The expected term of options granted represents the period of time that options granted are expected to be outstanding based 

upon historical data related to exercise and post-termination cancellation activity. The expected term of stock options granted to our 
Chief Executive Officer and non-employee directors and consultants are calculated separately from stock options granted to 
employees and officers.  

We apply a forfeiture rate to the number of unvested awards in each reporting period in order to estimate the number of 

awards that are expected to vest. Estimated forfeiture rates are based upon historical data on vesting behavior of employees. We adjust 
the total amount of compensation cost recognized for each award, in the period in which each award vests, to reflect the actual 
forfeitures related to that award. Changes in our estimated forfeiture rate will result in changes in the rate at which compensation cost 
for an award is recognized over its vesting period.  

Changes in the assumptions used to compute the fair value of the option awards are likely to affect the fair value of the non-

qualified stock option awards and the amount of compensation expense recognized in future periods. A higher volatility, shorter 
expected term and higher risk-free rate increases the resulting compensation expense recognized in future periods as compared to prior 
periods. Conversely, a lower volatility, longer expected term and lower risk-free rate decreases the resulting compensation expense 
recognized in future periods as compared to prior periods. 

For performance-based stock option awards vesting of a defined portion of each award will occur earlier if a defined 

performance condition is achieved; more than one condition may be achieved in any period. We estimate the probability of 
achievement of each performance condition and use those probabilities to determine the requisite service period of each award. The 

38 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
requisite service period for the award is the shortest of the explicit or implied service periods. In the case of the executive’s options, 
the explicit service period is nine years and eleven months from the respective grant dates. The implied service periods related to the 
performance conditions are the estimated times for each performance condition to be achieved. Thus, compensation expense will be 
recognized over the shortest estimated time for the achievement of performance conditions for that award (assuming that the 
performance conditions will be achieved before the cliff vesting occurs). For performance and market-based stock option awards 
(consisting of options and restricted stock in 2008 and options in 2009) to our Chief Executive Officer vesting occurs on the basis of 
the achievement of specified performance or market-based milestones. The options have an exercise price equal to the closing price on 
our common stock on the date of grant. The awards to our Chief Executive Officer are valued using a Monte Carlo simulation and the 
expense related to these grants will be recognized over the shortest estimated time for the achievement of the performance or market 
conditions. The awards will not vest unless one of the milestones is achieved or the market condition is met. Changes in the estimate 
of probability of achievement of any performance or market condition will be reflected in compensation expense of the period of 
change and future periods affected by the change. 

Research and Development Expenses Including Clinical Trial Expenses. Clinical trial expenses, which are included in 

research and development expenses, represent obligations resulting from our contracts with various clinical investigators and clinical 
research organizations in connection with conducting clinical trials for our product candidates. Such costs are expensed as incurred, 
and are based on the expected total number of patients in the trial, the rate at which the patients enter the trial and the period over 
which the clinical investigators and clinical research organizations are expected to provide services. We believe that this method best 
approximates the efforts expended on a clinical trial with the expenses we record. We adjust our rate of clinical expense recognition if 
actual results differ from our estimates. In addition to clinical trial expenses, we estimate the amounts of other research and 
development expenses, for which invoices have not been received at the end of a period, based upon communication with third parties 
that have provided services or goods during the period. Such estimates are subject to change as additional information becomes 
available. 

Fair Value Measurements. Our available-for-sale investment portfolio consists of money market funds, corporate debt 

securities and auction rate securities, and is recorded at fair value in the accompanying consolidated balance sheets in accordance with 
ASC 320 Investments – Debt and Equity Securities. The change in the fair value of these investments is recorded as a component of 
other comprehensive loss. 

We continue to monitor markets for our investments and consider the impact, if any, of market conditions on the fair market 

value of our investments. 

We expect to recover the amortized cost of all of our investments at maturity. Currently, we do not anticipate having to sell 
these securities in order to operate our business and we believe that it is not more likely than not that we will be required to sell these 
securities before recovery of principal. We do not believe the carrying values of our investments are other than temporarily impaired 
and therefore expect the positions will eventually be liquidated without significant loss. 

Valuation of securities is subject to uncertainties that are difficult to predict, such as changes to credit ratings of the securities 

and/or the underlying assets supporting them, default rates applicable to the underlying assets, underlying collateral value, discount 
rates, counterparty risk, ongoing strength and quality of market credit and liquidity and general economic and market conditions. The 
valuation of the auction rate securities we hold is based on an internal analysis of timing of expected future successful auctions, 
collateralization of underlying assets of the security and credit quality of the security. 

Impact of Recently Issued Accounting Standards 

In October 2009, the FASB issued ASU 2009-13 to address the accounting for multiple-deliverable arrangements. In an 

arrangement with multiple deliverables, the delivered items shall be considered a separate unit of accounting if both (i) the delivered 
items have value to a collaborator on a stand-alone basis, in that, the collaborator could resell the delivered items on a stand-alone 
basis, and (ii) the arrangement includes a general right of return relative to the delivered item, delivery or performance of the 
undelivered item or items is considered probable and substantially in our control. This ASU will be effective prospectively for revenue 
arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. Early adoption is permitted. We 
are currently evaluating the impact this ASU will have on our financial statements. 

Item 7A. Quantitative and Qualitative Disclosures about Market Risk 

Our primary investment objective is to preserve principal while maximizing yield without significantly increasing our risk. 

Our investments consist of money market funds, taxable corporate debt securities and auction rate securities. Our investments totaled 
$89.5 million at December 31, 2009, of which $1.5 million (2%) had fixed interest rates and $88.0 million (98%) had interest rates 
that were variable. As a result, we do not believe that we have a material exposure to interest-rate risk. Our marketable securities are 
classified as available-for-sale. 

39 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
As a result of changes in general market conditions during 2008, we determined to reduce the principal amount of auction 

rate securities in our portfolio as they came up for auction and invest the proceeds in other securities in accordance with our 
investment guidelines. At December 31, 2009, we continue to hold approximately $3.8 million (4.2% of assets measured at fair value) 
of auction rate securities, in respect of which we have received all scheduled interest payments and which, in the event of auction 
failure, have interest rates reset according to the contractual terms in the governing instruments. The principal amount of these 
remaining auction rate securities will not be accessible until a successful auction occurs, the issuer calls or restructures the underlying 
security, the underlying security matures and is paid or a buyer outside the auction process emerges. 

We continue to monitor the market for auction rate securities and consider the impact, if any, of market conditions on the fair 

market value of our investments. We believe that the failed auctions experienced to date are not a result of the deterioration of the 
underlying credit quality of these securities, although valuation of them is subject to uncertainties that are difficult to predict, such as 
changes to credit ratings of the securities and/or the underlying assets supporting them, default rates applicable to the underlying 
assets, underlying collateral value, discount rates, counterparty risk, ongoing strength and quality of market credit and liquidity, and 
general economic and market conditions. We do not believe the carrying values of these auction rate securities are other than 
temporarily impaired and therefore expect the positions will eventually be liquidated without significant loss. 

The valuation of the auction rate securities we hold is based on an internal analysis of timing of expected future successful 

auctions, collateralization of underlying assets of the security and credit quality of the security. We re-evaluated the valuation of these 
securities as of December 31, 2009 and the temporary impairment amount decreased $8.0 thousand from $316.0 thousand at 
December 31, 2008 to $308.0 thousand. A 100 basis point increase to our internal analysis would result in an insignificant increase in 
the temporary impairment of these securities as of the year ended December 31, 2009. 

Item 8. Financial Statements and Supplementary Data 

See page F-1, Index to Consolidated Financial Statements. 

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 

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our 
Exchange Act reports is recorded, processed, summarized and reported within the timelines specified in the SEC’s rules and forms, 
and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief 
Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure 
controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can 
only provide reasonable assurance of achieving the desired control objectives, and in reaching a reasonable level of assurance, 
management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and 
procedures. We have a Disclosure Committee consisting of members of our senior management which monitors and implements our 
policy of disclosing material information concerning the Company in accordance with applicable law. 

As required by SEC Rule 13a-15(e), we carried out an evaluation, under the supervision and with the participation of our 

management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation 
of our disclosure controls and procedures as of the end of the period covered by this report. Based on the foregoing, our Chief 
Executive Officer and Chief Financial Officer concluded that our current disclosure controls and procedures, as designed and 
implemented, were effective at the reasonable assurance level. 

Changes in Internal Control over Financial Reporting 

There have been no changes in our internal control over financial reporting, as such term is defined in the Exchange Act 
Rules 13a-15(f) and 15d-15(f) during our fiscal quarter ended December 31, 2009 that have materially affected, or are reasonably 
likely to materially affect, our internal control over financial reporting. 

40 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Report on Internal Control Over Financial Reporting 

Internal control over financial reporting is a process designed by, or under the supervision of, our principal executive and 

principal financial officers and effected by our Board, management and other personnel 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. It includes policies and procedures that: 

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

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

•    Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of 
our 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. 
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. 

Management has used the framework set forth in the report entitled Internal Control – Integrated Framework issued by the 
Committee of Sponsoring Organizations of the Treadway Commission, known as COSO, to evaluate the effectiveness of our internal 
control over financial reporting. Management has concluded that our internal control over financial reporting was effective as of 
December 31, 2009. The effectiveness of our internal control over financial reporting as of December 31, 2009 has been audited by 
PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears herein. 

Item 9B. Other Information 

None. 

41 

 
 
 
 
 
 
 
 
 
 
 
 
 
PART III 

The information required by the Form 10-K Items listed in the following table will be included under the respective 

headings specified for such Items in our definitive proxy statement for our 2010 Annual Meeting of Stockholders to be filed with the 
SEC: 

Item of Form 10-K 

Location in 2010 Proxy Statement 

Item 10. Directors, Executive Officers and Corporate 

Governance 

Item 11. Executive Compensation 

Election of Directors. 
Board and Committee Meetings. 
Executive Officers of the Company. 
Section 16(a) Beneficial Ownership Reporting and Compliance. 
Code of Business Ethics and Conduct.* 
*The full text of our code of business ethics and conduct is available on our 

website (http://www.progenics.com/documents.cfm). 

Executive Compensation. 
Compensation Committee Report. 
Compensation Committee Interlocks and Insider Participation. 

Item 12. Security Ownership of Certain Beneficial 

Owners and Management and Related 
Stockholder Matters 

Equity Compensation Plan Information. 
Security Ownership of Certain Beneficial Owners and Management.  

Item 13. Certain Relationships and Related 

Transactions, and Director Independence 

Certain Relationships and Related Transactions. 
Affirmative Determinations Regarding Director Independence and 

Other Matters.  

Item 14. Principal Accounting Fees and Services 

Fees Billed for Services Rendered by our Independent Registered 

Public Accounting Firm. 

Pre-approval of Audit and Non-Audit Services by the Audit 

Committee. 

42 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 15. Exhibits, Financial Statement Schedules 

PART IV 

The following documents or the portions thereof indicated are filed as a part of this Report. 

(a)  Documents filed as part of this Report: 

Consolidated Financial Statements of Progenics Pharmaceuticals, Inc.: 

Report of Independent Registered Public Accounting Firm 

Consolidated Balance Sheets at December 31, 2009 and 2008 

Consolidated Statements of Operations for the years ended December 31, 2009, 2008 and 2007 

Consolidated Statements of Stockholders’ Equity and Comprehensive Loss for the years ended December 31, 2009, 
2008 and 2007 

Consolidated Statements of Cash Flows for the years ended December 31, 2009, 2008 and 2007 

Notes to Consolidated Financial Statements 

(b)   Financial Statement Schedules 

All financial statement schedules referred to in Item 12-01 of Regulation S-X are inapplicable and therefore have been 
omitted. 

(c)  Item 601 Exhibits 

Those exhibits required to be filed by Item 601 of Regulation S-K are listed in the Exhibit Index immediately following 
the signature page hereof and preceding the exhibits filed herewith, and such listing is incorporated herein by reference. 

43 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Report of Independent Registered Public Accounting Firm 
Financial Statements: 

Consolidated Balance Sheets at December 31, 2009 and 2008 
Consolidated Statements of Operations for the years ended December 31, 2009, 2008 and 2007 
Consolidated Statements of Stockholders’ Equity and Comprehensive Loss 
  for the years ended December 31, 2009, 2008 and 2007 
Consolidated Statements of Cash Flows for the years ended December 31, 2009, 2008 and 2007 

Notes to Consolidated Financial Statements 

Page 
F-2 

F-3 
F-4 

F-5 
F-6 
F-7 

F-1 

 
 
 
 
 
 
 Report of Independent Registered Public Accounting Firm 

To the Board of Directors and Stockholders of 
Progenics Pharmaceuticals, Inc.: 

In our opinion, the consolidated financial statements listed in the index appearing under Item 15(a)(1) present fairly, in 
all material respects, the financial position of Progenics Pharmaceuticals, Inc. and its subsidiaries at December 31, 2009 
and 2008, and the results of their operations and their cash flows for each of the three years in the period ended 
December 31, 2009 in conformity with accounting principles generally accepted in the United States of America. Also 
in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of 
December 31, 2009, based on criteria established in Internal Control - Integrated Framework issued by the Committee 
of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for 
these financial statements and for maintaining effective internal control over financial reporting and for its assessment 
of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control 
Over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on these financial 
statements, and on the Company's internal control over financial reporting based on our integrated 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 audits to obtain reasonable assurance about whether the financial 
statements are free of material misstatement and whether effective internal control over financial reporting was 
maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence 
supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and 
significant estimates made by management, and evaluating the overall financial statement presentation. 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 audits also included performing such other procedures as we considered 
necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions. 

As discussed in Note 2 to the consolidated financial statements, the Company changed the manner in which it accounts 
for uncertainties in income taxes in 2007 and the manner in which it accounts for fair value measurements for its 
financial assets and financial liabilities in 2008. 

A company’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 
generally accepted accounting principles. A company’s internal control over financial reporting includes those policies 
and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the 
transactions and dispositions of the assets of the company; (ii) 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 authorizations of 
management and directors of the company; and (iii) 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 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. 

/s/ PricewaterhouseCoopers LLP 
New York, New York 
March 10, 2010 

F-2 

 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

CONSOLIDATED BALANCE SHEETS 
(in thousands, except for par value and share amounts) 

ASSETS 

Current assets: 

Cash and cash equivalents 
Marketable securities 
Accounts receivable 
Other current assets 

Total current assets 

Marketable securities 
Fixed assets, at cost, net of accumulated depreciation and amortization 
Other assets  

Total assets 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Current liabilities: 

Accounts payable and accrued expenses 
Deferred revenue - current 
Other current liabilities 

Total current liabilities 

Other liabilities 

Total liabilities 

Commitments and contingencies (Note 8) 
Stockholders’ equity: 

Preferred stock, $.001 par value; 20,000,000 shares authorized; issued and 

outstanding - none 

Common stock, $.0013 par value; 40,000,000 shares authorized; issued - 

32,142,062 in 2009 and 30,807,387 in 2008 

Additional paid-in capital 
Accumulated deficit 
Accumulated other comprehensive loss 
Treasury stock, at cost (200,000 shares in 2009 and 2008) 

Total stockholders’ equity 
Total liabilities and stockholders’ equity 

December 31, 

2009 

2008 

90,903
1,501
7,522
1,468
101,394
3,792
6,560
1,867
113,613

5,836 
-
170
6,006
-
6,006

-

42
439,943
(329,330) 
(307) 
(2,741) 

107,607
113,613

$ 

$ 

$ 

$ 

56,186
63,127
1,337
3,531
124,181
22,061
11,071
520
157,833

6,496 
31,645
57
38,198
266
38,464

-

40
422,085
(298,718)
(1,297)
(2,741)
119,369
157,833

$

$

$

$

The accompanying notes are an integral part of the financial statements. 

F-3 

 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except for loss per share data) 

Revenues: 

Research and development 
Royalty income 
Research grants and contract 
Other revenues 

Total revenues 

Expenses: 

Research and development 
License fees - research and development 
General and administrative 
Royalty expense 
Depreciation and amortization 

Total expenses 

Operating loss 

Other income: 

Interest income 
Gain on sale of marketable securities 

Total other income 

Net loss 

Net loss per share - basic and diluted 
Weighted-average shares - basic and diluted 

Years Ended December 31, 
2008 

2007 

2009 

44,351 
2,372  
1,968  
256  
48,947  

49,798  
1,058  
25,106  
237  
5,078  
81,277  

$ 

$ 

59,885 
146  
7,460  
180  
67,671  

82,290  
2,830  
28,834  
15  
4,609  
118,578  

65,455 
-  
10,075  
116  
75,646  

95,234  
942  
27,901  
-  
3,027  
127,104  

(32,330) 

(50,907) 

(51,458) 

1,481  
237 
1,718  

6,235  
- 
6,235  

7,770  
- 
7,770  

(30,612)  $ 

(44,672)  $ 

(43,688) 

(0.98)  $ 

31,219  

(1.48)  $ 

30,142  

(1.59) 
27,447  

$ 

$ 

$ 

The accompanying notes are an integral part of the financial statements. 

F-4 

 
 
 
 
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
 
  
  
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
  
 
  
  
 
  
  
 
  
  
  
  
 
 
 
  
  
  
  
  
 
  
  
 
  
  
 
  
  
  
 
  
  
 
  
  
 
  
  
  
  
 
 
PROGENICS PHARMACEUTICALS, INC. 

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND COMPREHENSIVE LOSS 
For the Years Ended December 31, 2009, 2008 and 2007 
(in thousands)  

Common Stock 

Shares 
26,199 

Amount 
$        34 

Additional 
Paid-In 
Capital 

Accumulated 
Deficit 

$    321,315  $    (210,358) 

Accumulated 
Other 
Comprehensive 
(Loss) Income 
$          (145) 

Treasury Stock 

Shares 
- 

Amount 
$         -  $   110,846 

Total 

Balance at December 31,  2006 

Comprehensive loss: 

Net loss 
Net change in unrealized gain on 

marketable securities 
Total comprehensive loss: 

Compensation expenses for share-based 

payment arrangements 

Issuance of restricted stock, net of 

forfeitures 

Sale of common stock in a public offering 
($23.15 per share, net of underwriting 
discounts and commissions and other 
offering expenses of $3,112) (see Note 
7) 

Sale of common stock under employee 
stock purchase plans and exercise of 
stock options 

Repurchase of restricted stock  

- 

- 

- 

267 

2,600 

688 

- 

- 

- 

- 

- 

3 

2 

- 

- 

- 

15,306 

- 

57,075 

7,823 

(19) 

Balance at December 31, 2007 

29,754 

      39 

     401,500      (254,046) 

Comprehensive loss: 

Net loss 
Net change in unrealized gain on 

marketable securities 
Total comprehensive loss: 

Compensation expenses for share-based 

payment arrangements 

Issuance of restricted stock, net of 

forfeitures 

Sale of common stock under employee 
stock purchase plans and exercise of 
stock options 

Treasury shares acquired under repurchase 

program 

- 

- 

- 

216 

837 

- 

- 

- 

- 

- 

1 

- 

- 

- 

14,133 

- 

6,452 

- 

 (44,672) 

- 

- 

- 

- 

- 

 (43,688) 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

(43,688) 

151 
(43,537) 

15,306 

- 

57,078 

7,825 

(19) 

   147,499 

(44,672) 

(1,303) 
(45,975) 

14,133 

- 

6,453 

(200) 

(2,741) 

(2,741) 

              151 

- 

- 

- 

- 

- 

6 

- 

(1,303) 

- 

- 

- 

- 

Balance at December 31, 2008 

30,807 

    40 

    422,085

    (298,718) 

        (1,297) 

(200) 

(2,741) 

 119,369 

Comprehensive loss: 

Net loss 
Net change in unrealized loss on marketable 

securities 

Total comprehensive loss: 

Compensation expenses for share-based 

payment arrangements 

Issuance of restricted stock, net of 

forfeitures 

Sale of common stock under employee 
stock purchase plans and exercise of 
stock options 

- 

- 

- 

266 

- 

- 

- 

- 

- 

- 

12,986 

- 

1,069 

2 

4,872 

 (30,612) 

- 

- 

- 

- 

- 

990 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

(30,612) 

990 
(29,622) 

12,986 

- 

4,874 

Balance at December 31, 2009 

32,142 

$    42 

$     439,943 $    (329,330)

$        (307) 

(200) 

$(2,741) 

$107,607 

The accompanying notes are an integral part of the financial statements. 

F-5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
        
                                                                                          
 
PROGENICS PHARMACEUTICALS, INC. 

CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Cash flows from operating activities: 

Net loss 
Adjustments to reconcile net loss to net cash used in operating 
activities: 

Depreciation and amortization 
Write-off of fixed assets 
Amortization of discounts, net of premiums, on marketable 

securities 

Expenses for share-based compensation awards 
Gain on sale of marketable securities 
Changes in assets and liabilities: 

(Increase) decrease in accounts receivable 
Decrease (increase) in other current assets  
Increase in other assets  
(Decrease) increase in accounts payable and accrued expenses 
(Decrease) increase in deferred revenue 
Increase in other current liabilities 
(Decrease) increase in other liabilities 
Net cash used in operating activities 

Cash flows from investing activities: 

Capital expenditures 
Sales/maturities of marketable securities 
Purchase of marketable securities 
Decrease (increase) in restricted cash 

Net cash provided by (used in) investing activities 

Cash flows from financing activities: 

Proceeds from sale of common stock in public offering  
Expenses related to the sale of common stock in public offering 
Purchase of treasury stock 
Proceeds from the exercise of stock options and sale of common stock 

under the Employee Stock Purchase Plan 

Repurchase of restricted stock 

Net cash provided by financing activities 

Net increase (decrease) in cash and cash equivalents 
Cash and cash equivalents at beginning of period 
Cash and cash equivalents at end of period 

   $

Years Ended December 31, 
2008 

2007 

2009 

$

(30,612)  $

(44,672) 

$

(43,688) 

5,078 
334 

889 
12,986 

(237)   

(6,185)   
2,063 
(1,667)   
(660)   
(31,645)   
113 
(266)   
(49,809)   

(901)   

80,233 
- 
320 
79,652 

- 
- 
- 

4,609 
3 

960 
14,133 
- 

658 
(420)   
- 

(8,269)   
4,786 
- 
(93)   
(28,305)   

(2,172)   

128,705 
(56,209)   

32 
70,356 

- 
- 

(2,741)   

4,874 
- 
4,874 
34,717 
56,186 
90,903 

$

6,453
- 
3,712 
45,763 
10,423 
56,186 

$

3,027  
- 

(445) 
15,306 
- 

(296) 
70 
- 
2,913 
(16,231) 
57 
236 
(39,051) 

(5,151) 
252,850  
(275,048) 
(8) 
(27,357) 

60,190 
(3,112) 
- 

7,825  
(19) 
64,884  
(1,524) 
11,947 
10,423  

The accompanying notes are an integral part of the financial statements.

F-6 

 
 
  
  
  
  
  
  
  
  
   
    
 
 
 
 
  
  
  
 
 
 
 
 
  
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
  
  
 
  
 
 
 
  
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 
(amounts in thousands, except per share amounts or unless otherwise noted) 

1. Organization and Business 

Progenics Pharmaceuticals, Inc. (“Progenics,” “we” or “us”) is a biopharmaceutical company focusing on the 

development and commercialization of innovative therapeutic products to treat the unmet medical needs of patients with 
debilitating conditions and life-threatening diseases. Our principal programs are directed toward supportive care, oncology and 
virology. 

Progenics commenced principal operations in 1988, became publicly traded in 1997 and throughout has been engaged 
primarily in research and development efforts, developing manufacturing capabilities, establishing corporate collaborations and 
raising capital. Certain of our intellectual property rights are held by wholly owned subsidiaries. None of our subsidiaries other 
than PSMA Development Company LLC (“PSMA LLC”) had operations during the years ended December 31, 2009, 2008 or 
2007. All of our operations are conducted at our facilities in Tarrytown, New York. 

Supportive Care 

Our first commercial product is RELISTOR® (methylnaltrexone bromide) subcutaneous injection, a first-in-class therapy 

for opioid-induced constipation approved for sale in over 40 countries worldwide, including the United States, European Union 
member states, Canada, Australia and Brazil. Marketing applications are pending elsewhere throughout the world. 

In October 2009, we and Wyeth Pharmaceuticals terminated our 2005 RELISTOR collaboration, as a result of which we 

regained all worldwide rights to RELISTOR. Under our Transition Agreement, Wyeth is continuing to market and sell RELISTOR 
for a U.S. Sales Period ending September 30, 2010 and an ex-U.S. Sales Period ending December 31, 2010. After this transition 
period, we will assume full control of and responsibility for future development and commercialization of RELISTOR. Shortly 
after the termination, Pfizer Inc. completed its previously-announced acquisition of Wyeth, which is now a wholly owned 
subsidiary of Pfizer. 

We are pursuing a range of strategic alternatives for RELISTOR, including licensing, collaboration and/or strategic 
alliances with world-wide or regional partners, U.S. commercialization of the currently-approved product on our own or with 
pharmaceutical detailing and sales organizations and/or co-promotion of the franchise with a partner using our own sales force. 

Under the Transition Agreement, Wyeth has agreed to pay to us the sum of $10.0 million in six quarterly installments and 

is continuing certain ongoing development efforts for subcutaneous RELISTOR, at its expense, through September 30, 2010. 
Wyeth’s international sales and marketing obligations during the ex-U.S. Sales Period are subject to certain extension and early 
transition options available to us. We have no further obligations to Wyeth under the 2005 collaboration agreement. Wyeth will 
continue to pay royalties on worldwide sales as provided in the 2005 collaboration agreement except that no royalties will be 
payable in respect of ex-U.S. sales during (i) the fourth quarter of 2010 to the extent certain financial targets are not met or (ii) an 
extended ex-U.S. Sales Period in the subject country. Principal responsibility for regulatory submissions and interactions for all 
other formulations and presentations of RELISTOR will be transferred during and as part of the transition. Wyeth is also providing 
financial resources, aggregating up to approximately $14.5 million, and/or other assistance with respect to agreed-upon regulatory, 
manufacturing and supply matters. We have agreed to purchase Wyeth’s remaining inventory of subcutaneous RELISTOR at the 
end of the Sales Periods on agreed-upon terms and conditions. 

Prior to the Transition Agreement (including periods covered by this report), we received upfront, milestone, and royalty 

payments from Wyeth, and were reimbursed for expenses we incurred in connection with the development of RELISTOR; 
manufacturing and commercialization expenses for RELISTOR were funded by Wyeth. 

Our October 2008 out-license to Ono Pharmaceutical of the rights to subcutaneous RELISTOR in Japan is unaffected 
by termination of the Wyeth collaboration. Under the License Agreement, we received an upfront payment of $15.0 million, and 
are entitled to receive potential milestones, upon achievement of development milestones by Ono, of up to $20.0 million, 
commercial milestones and royalties on sales by Ono of subcutaneous RELISTOR in Japan. Ono also has the option to acquire 
from us the rights to develop and commercialize in Japan other formulations of RELISTOR, including intravenous and oral forms, 
on terms to be negotiated separately. 

F-7 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Oncology 

In the area of prostate cancer, we are conducting a phase 1 clinical trial of a fully human monoclonal antibody-drug 
conjugate (“ADC”) directed against prostate specific membrane antigen (“PSMA”), a protein found at high levels on the surface of 
prostate cancer cells and also on the neovasculature of a number of other types of solid tumors. We are also developing therapeutic 
vaccines designed to stimulate an immune response to PSMA. Our PSMA programs are conducted through our wholly owned 
subsidiary, PSMA Development Company LLC. 

Virology 

In the area of virology, we are developing a viral-entry inhibitor -- a humanized monoclonal antibody, PRO 140 -- for 

infection due to human immunodeficiency virus (“HIV”), the virus that causes AIDS. We are developing the subcutaneous form of 
PRO 140 for treatment of HIV infection, which has the potential for weekly self-administration. Advancement of this program is 
subject to our obtaining pivotal clinical-trial funding, for which we have applied to government agencies. In our hepatitis C virus 
infection efforts, we are evaluating second-generation HCV-entry inhibitors as possible development candidates. We are also 
engaged in research regarding a prophylactic vaccine against HIV infection. 

Our oncology and virology product candidates are not as advanced in development as RELISTOR, and we do not expect 

any recurring revenues from sales or otherwise with respect to these product candidates in the near term.  

Funding and Financial Matters 

We will require additional funding to continue our current programs to completion, which may involve collaboration 

agreement, license or sale transactions or royalty sales or financings with respect to our products and product candidates. We may 
also seek to raise additional capital through sales of common stock or other securities, and expect to continue funding some 
programs in part through government awards. 

Progenics has had recurring losses since inception. At December 31, 2009, we had cash, cash equivalents and marketable 

securities, including non-current portion, totaling $96.2 million which we expect will be sufficient to fund current operations 
beyond one year. During the year ended December 31, 2009, we had a net loss of $30.6 million and used $49.8 million of cash in 
operating activities. At December 31, 2009, we had an accumulated deficit of $329.3 million. 

Pending use in our business, our revenues and proceeds of financing activities are held in cash, cash equivalents and 

marketable securities. Our marketable securities, which include corporate debt securities and auction rate securities, are classified 
as available-for-sale. 

In April, 2008, our Board of Directors approved a share repurchase program to acquire up to $15.0 million of our 
outstanding common shares, under which we have $12.3 million remaining available. Purchases may be discontinued at any time. 
We did not repurchase any common shares during the year ended December 31, 2009. 

2. Summary of Significant Accounting Policies 

Basis of Presentation 

The consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the 
United States of America (“GAAP”). The preparation of financial statements in conformity with GAAP requires management to 
make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes. As 
additional information becomes available or actual amounts become determinable, the recorded estimates are revised and reflected 
in the operating results. Actual results could differ from those estimates. 

Consolidation 

The consolidated financial statements include the accounts of Progenics and PSMA LLC, as of and for the years ended 

December 31, 2009, 2008 and 2007. Inter-company transactions have been eliminated in consolidation. 

F-8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Revenue Recognition 

We recognize revenue from all sources based on the provisions of the SEC’s Staff Accounting Bulletin (“SAB”) No. 104 

(“SAB 104”) and ASC 605 Revenue Recognition. 

Collaborations may contain substantive milestone payments to which we apply the substantive milestone method 

(“Substantive Milestone Method”). Substantive milestone payments are considered to be performance payments that are 
recognized upon achievement of the milestone only if all of the following conditions are met: (i) the milestone payment is non-
refundable, (ii) achievement of the milestone involves a degree of risk and was not reasonably assured at the inception of the 
arrangement, (iii) substantive effort is involved in achieving the milestone, (iv) the amount of the milestone payment is reasonable 
in relation to the effort expended or the risk associated with achievement of the milestone, and (v) a reasonable amount of time 
passes between the upfront license payment and the first milestone payment as well as between each subsequent milestone 
payment. 

Determination as to whether a milestone meets the aforementioned conditions involves management’s judgment. If any of 

these conditions are not met, the resulting payment would not be considered a substantive milestone and, therefore, the resulting 
payment would be part of the consideration and be recognized as revenue as such performance obligations are performed. 

Non-refundable upfront license fees are recognized as revenue when we have a contractual right to receive such payment, 

the contract price is fixed or determinable, the collection of the resulting receivable is reasonably assured and we have no further 
performance obligations. Multiple element arrangements, such as license and development arrangements are analyzed to determine 
whether the deliverables, which often include a license and performance obligations, such as research and steering or other 
committee services, can be separated in accordance with ASC 605 Revenue Recognition. We would recognize upfront license 
payments as revenue upon delivery of the license only if the license had standalone value and the fair value of the undelivered 
performance obligations could be determined. If the fair value of the undelivered performance obligations could be determined, 
such obligations would then be accounted for separately as performed. If the license is considered to either (i) not have standalone 
value, or (ii) have standalone value but the fair value of any of the undelivered performance obligations could not be determined, 
the upfront license payments would be recognized as revenue over the estimated period of when our performance obligations are 
performed. Any unamortized remainder of the upfront payment is recognized upon termination of collaborations. 

We must determine the period over which our performance obligations are performed and revenue related to upfront 
license payments are recognized. Revenue is recognized using either a proportionate performance or straight-line method. We 
recognize revenue using the proportionate performance method provided that we can reasonably estimate the level of effort 
required to complete our performance obligations under an arrangement and such performance obligations are provided on a best-
efforts basis. Direct labor hours or full-time equivalents will typically be used as the measure of performance. Under the 
proportionate performance method, revenue related to upfront license payments is recognized in any period as the percent of actual 
effort expended in that period relative to total effort for all of our performance obligations under the arrangement.  

During the course of a collaboration agreement that involves a development plan and budget, the amount of the upfront 
license payment that is recognized as revenue in any period increases or decreases as the percentage of actual effort increases or 
decreases. When a new budget is approved, the remaining unrecognized amount of the upfront license fee is recognized 
prospectively, by applying the changes in the total estimated effort or period of development that is specified in the revised 
approved budget.  

If we cannot reasonably estimate the level of effort required to complete our performance obligations under an 
arrangement and the performance obligations are provided on a best-efforts basis, then the total upfront license payments would be 
recognized as revenue on a straight-line basis over the period we expect to complete our performance obligations. 

If we are involved in a steering or other committee as part of a multiple element arrangement, we assess whether our 

involvement constitutes a performance obligation or a right to participate. For those committees that are deemed obligations, we 
will evaluate our participation along with other obligations in the arrangement and will attribute revenue to our participation 
through the period of our committee responsibilities.  

We recognize revenue for payments that are contingent upon performance solely by our collaborator immediately upon 

the achievement of the defined event if we have no related performance obligations. 

F-9 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Reimbursement of costs is recognized as revenue provided the provisions of ASC 605 Revenue Recognition are met, the 

amounts are determinable and collection of the related receivable is reasonably assured. 

Amounts received prior to satisfying the above revenue recognition criteria are recorded as deferred revenue in the 

accompanying consolidated balance sheets. Amounts not expected to be recognized within one year of the balance sheet date are 
classified as long-term deferred revenue. The estimate of the classification of deferred revenue as short-term or long-term is based 
upon management’s current operating budget with the collaborator for the total effort required to complete our performance 
obligations under the arrangement. 

Royalty revenue is recognized in the period the sales occur, provided that the royalty amounts are fixed or determinable, 

collection of the related receivable is reasonably assured and we have no remaining performance obligations under the 
arrangement providing for the royalty. If royalties are received when we have remaining performance obligations, they would be 
attributed to the services being provided under the arrangement and, therefore, recognized as such obligations are performed under 
either the proportionate performance or straight-line methods, as applicable. 

During the years ended December 31, 2009, 2008 and 2007, we also recognized revenue from government research grants 

(and contract in the 2008 and 2007 periods), which are used to subsidize a portion of certain of our research projects (“Projects”), 
exclusively from the National Institutes of Health (“NIH”). We also recognized revenue from the sale of research reagents during 
those periods. 

NIH grant and contract revenue is recognized as efforts are expended and as related subsidized project costs are incurred. 

We perform work under the NIH grants and contract on a best-effort basis. The NIH reimburses us for costs associated with 
projects in the fields of virology and cancer, including pre-clinical research, development and early clinical testing of a 
prophylactic vaccine designed to prevent HIV from becoming established in uninfected individuals exposed to the virus, as 
requested by the NIH. 

Transition Agreement with Wyeth – October 2009 

The Transition Agreement provides for the termination of the 2005 Wyeth collaboration agreement and the transition to 

Progenics of the rights to develop and commercialize RELISTOR. Under it, Wyeth’s license of Progenics technology is terminated 
except as necessary for performance of Wyeth’s obligations during the transition period and Wyeth has returned the rights to 
RELISTOR that we had previously granted under the 2005 collaboration agreement. During the transition, Wyeth is obligated to pay all 
costs of commercialization of subcutaneous RELISTOR, including manufacturing costs, and retains all proceeds from its sale of the 
products, subject to royalties due to us. Decisions with respect to commercialization of the product during the transition period are to be 
made solely by Wyeth. We have no further obligations to Wyeth under the 2005 collaboration agreement. 

Wyeth Collaboration Agreement – December 2005 to October 2009 

The Wyeth collaboration agreement was in effect until October 2009 which includes periods covered by this report. The 
Wyeth Collaboration Agreement involved three formulations of RELISTOR: (i) a subcutaneous formulation to be used in patients with 
opioid-induced constipation (“OIC”), (ii) an intravenous formulation to be used in patients with post-operative ileus (“POI”) and (iii) an 
oral formulation to be used in patients with OIC. 

The Wyeth Collaboration Agreement established a Joint Steering Committee (“JSC”) and a Joint Development Committee 
(“JDC”), each with an equal number of representatives from both Wyeth and us. The JSC coordinated the companies’ key activities, 
while the JDC coordinated the development of RELISTOR by Wyeth and us. A Joint Commercialization Committee (“JCC”), 
composed of company representatives in number and function according to our respective responsibilities, facilitated open 
communication between Wyeth and us on commercialization matters.  

The agreement included a non-refundable upfront license fee, reimbursement of development costs, research and 

development payments based upon our achievement of clinical development milestones, contingent payments based upon the 
achievement by Wyeth of defined events and royalties on product sales. We recognized research revenue from Wyeth from 
January 1, 2006 to October 2009. We recognized revenue related to the upfront license payment we received from Wyeth using the 
proportionate performance method since we reasonably estimated the level of effort required to complete our performance 
obligations based upon the most current budget approved by both Wyeth and us. Such performance obligations were provided by 
us on a best-efforts basis. Full-time equivalents were used as the measure of performance. Significant judgment is required in 

F-10 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

determining the nature and assignment of tasks to be accomplished by each of the parties and the level of effort required for us to 
complete our performance obligations under the arrangement. The nature and assignment of tasks performed by each party 
involved the preparation, discussion and approval by the parties of a development plan and budget. 

The amount of the Wyeth upfront license payment that we recognized as revenue for each fiscal quarter prior to the third 
quarter of 2007 was based upon several revised and approved budgets, although the revisions to those budgets did not materially 
affect the amount of revenue recognized in those periods. During the third quarter of 2007, the estimate of our total remaining 
effort to complete our development obligations was increased significantly based upon a revised development budget approved by 
both us and Wyeth. As a result, the period over which our obligations were to be performed, and over which the upfront payment 
was to be amortized, was extended from the end of 2008 to the end of 2009. The Transition Agreement between Wyeth and us 
shortened the obligation period from the end of 2009 to October 2009 and resulted in the recognition, during the fourth quarter of 
2009, of the remaining $5.2 million unamortized upfront payment balance at September 30, 2009. 

In relation to the Wyeth collaboration, we assessed the nature of our involvement with the JSC, JDC and JCC. Our 

involvement in the first two such committees was one of several obligations to develop the subcutaneous and intravenous 
formulations of RELISTOR through regulatory approval in the U.S. We combined the committee obligations with the other 
development obligations and accounted for these obligations during the development phase as a single unit of accounting. After 
the period during which we have developmental responsibilities, however, we assessed the nature of our involvement with the 
committees as a right, rather than an obligation. Our assessment was based upon the fact that we negotiated to be on these 
committees as an accommodation for our granting of the license for RELISTOR to Wyeth. Further, Wyeth had been granted by us an 
exclusive worldwide license, even as to us, to develop and commercialize RELISTOR and we had assigned the agreements for the 
manufacture of RELISTOR by third parties to Wyeth. We were responsible for developing the subcutaneous and intravenous 
formulations in the U.S. until they receive regulatory approval, while Wyeth was responsible for these formulations outside the U.S. 
other than Japan. Wyeth was also responsible for the development of the oral formulation worldwide excluding Japan. We transferred 
to Wyeth all existing supply agreements with third parties for RELISTOR and sublicensed intellectual property rights to permit Wyeth 
to manufacture RELISTOR, during the development and commercialization phases of the Wyeth Collaboration Agreement, in both 
bulk and finished form for all products worldwide. We had no further manufacturing obligations under the 2005 Collaboration. We 
transferred to Wyeth all know-how, as defined, related to RELISTOR. Based upon our research and development programs, such 
period will cease upon completion of our development obligations under the 2005 Wyeth collaboration agreement.  

Following regulatory approval of the subcutaneous and intravenous formulations of RELISTOR, Wyeth was required to 

continue to develop the oral formulation and to commercialize all formulations as provided in the Wyeth Collaboration 
Agreement, for which it was capable and responsible. We expected at the beginning of the agreement, that the activities of these 
committees for the period were to be focused on Wyeth’s development and commercialization obligations. As discussed in Note 1, 
we and Wyeth terminated our collaboration in October 2009, as a result of which we regained all worldwide rights to RELISTOR 
and our out-license to Ono, with respect to Japan, is unaffected by the termination of the Wyeth collaboration. 

From January 2006 to October 2009, costs for the development of RELISTOR incurred by Wyeth or us were paid by 

Wyeth. Wyeth had the right once annually to engage an independent public accounting firm to audit expenses for which we had been 
reimbursed during the prior three years. If the accounting firm concluded that any such expenses had been understated or overstated, a 
reconciliation was performed. From January 2006 to October 2009, we recognized as research and development revenue from 
collaborator, amounts received from Wyeth for reimbursement of our development expenses for RELISTOR as incurred under the 
development plan agreed to between us and Wyeth. In addition to the upfront payment and reimbursement of our development costs, 
Wyeth made milestone payments to us upon achievement of specific milestones (development related milestones for clinical and 
regulatory events). Upon achievement of defined substantive development milestones by us for the subcutaneous and intravenous 
formulations, the milestone payments were recognized as revenue.  

During May 2007, April 2008 and July 2008, we earned $9.0 million (two milestone payments), $15.0 million and $10.0 

million, respectively, upon achievement of non-refundable milestones anticipated in the Wyeth collaboration; the first for the 
submission and acceptance for review of an NDA for a subcutaneous formulation of RELISTOR with the FDA and a comparable 
submission in the European Union, the second for the FDA approval of subcutaneous RELISTOR and the third for the European 
approval of subcutaneous RELISTOR. We considered those milestones to be substantive based on the significant degree of risk at 
the inception of the collaboration related to the conduct and successful completion of clinical trials and, therefore, of not achieving 
the milestones; the amount of the payment received relative to the significant costs incurred since inception of the Wyeth 
collaboration and amount of effort expended or the risk associated with the achievement of these milestones; and the passage of 
17, 28 and 31 months, respectively, from inception of the collaboration to the achievement of those milestones. Therefore, we 

F-11 

 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

recognized the milestone payments as revenue in the respective periods in which the milestones were earned. As of December 31, 
2008, relative to the $60.0 million upfront license payment received from Wyeth, we recorded $14.6 million as deferred revenue – 
current, which is recognized as revenue over the period of our development obligations relating to RELISTOR. In addition, at 
December 31, 2008, we recorded $1.6 million as deferred revenue - current, related to reimbursements from Wyeth for 
development costs. 

In addition, during years ended December 31, 2009 and 2008, we earned royalties of $1,853 and $665, respectively, based 

on the net sales of subcutaneous RELISTOR, and we recognized $2,372 and $146, respectively, of royalty income. As of 
December 31, 2008, we recorded a cumulative total of $519 as deferred revenue – current, which was being recognized as royalty 
income over the period of our development obligations relating to RELISTOR. The remaining deferred royalty revenue balance of 
$807, as of September 30, 2009, was recognized as royalty income during the fourth quarter of 2009, the period in which our 
development obligations under the Wyeth Collaboration Agreement terminated. We incurred $185 and $67, respectively, of 
royalty costs and recognized $237 and $15, respectively, of royalty expenses during the years ended December 31, 2009 and 2008. 
As of December 31, 2008, we recorded a cumulative total of $52 of deferred royalty costs from the royalty costs incurred during 
the last three quarters of 2008, which were being recognized as royalty expense over the period of our development obligations 
relating to RELISTOR. The remaining deferred royalty charges balance of $81, as of September 30, 2009, was recognized as 
royalty expense during the fourth quarter 2009, the period in which our development obligations relating to RELISTOR 
terminated. 

Ono Agreement – October 2008 

Ono is responsible for developing and commercializing subcutaneous RELISTOR in Japan, including conducting the 
clinical development necessary to support regulatory marketing approval. Ono will own the subcutaneous filings and approvals 
relating to RELISTOR in Japan. In addition to the $15.0 million upfront payment from Ono, we are entitled to receive up to an 
additional $20.0 million, payable upon achievement by Ono of its development milestones. Ono is also obligated to pay to us 
royalties and commercialization milestones on sales by Ono of subcutaneous RELISTOR in Japan. Ono has the option to acquire 
from us the rights to develop and commercialize in Japan other formulations of RELISTOR, including intravenous and oral forms, 
on terms to be negotiated separately. Ono may request us to perform activities related to its development and commercialization 
responsibilities beyond our participation in joint committees and specified technology transfer-related tasks which will be at its 
expense, and payable to us for the services it requests, at the time we perform services for them. Revenue earned from activities we 
perform for Ono is recorded in research and development revenue. 

We recognized the upfront payment of $15.0 million, which we received from Ono in November 2008, as research and 

development revenue during the first quarter of 2009, upon satisfaction of our performance obligations. 

Research and Development Expenses 

Research and development expenses include costs directly attributable to the conduct of research and development 

programs, including the cost of salaries, payroll taxes, employee benefits, materials, supplies, maintenance of research equipment, 
costs related to research collaboration and licensing agreements, the purchase of in-process research and development, the cost of 
services provided by outside contractors, including services related to the our clinical trials, clinical trial expenses, the full cost of 
manufacturing drug for use in research, pre-clinical development and clinical trials. All costs associated with research and 
development are expensed as incurred. 

Clinical trial expenses, which are included in research and development expenses, represent obligations resulting from our 
contracts with various clinical investigators and clinical research organizations in connection with conducting clinical trials for our 
product candidates. Such costs are expensed as incurred, and are based on the expected total number of patients in the trial, the rate 
at which the patients enter the trial and the period over which clinical investigators or clinical research organizations are expected 
to provide services. At each period end, we evaluate the accrued expense balance related to these activities based upon information 
received from the suppliers and estimated progress towards completion of the research or development objectives to ensure that the 
balance is reasonably stated. Such estimates are subject to change as additional information becomes available. 

Use of Estimates 

Significant estimates include useful lives of fixed assets, the periods over which certain revenues and expenses will be 

recognized, including research and development revenue recognized from non-refundable up-front licensing payments and 

F-12 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

expense recognition of certain clinical trial costs which are included in research and development expenses, the amount of non-
cash compensation costs related to share-based payments to employees and non-employees and the periods over which those costs 
are expensed and the likelihood of realization of deferred tax assets. 

Patents 

As a result of research and development efforts conducted by us, we have applied, or are applying, for a number of 

patents to protect proprietary inventions. All costs associated with patents are expensed as incurred. 

Net Loss Per Share 

We prepare our earnings per share (“EPS”) data in accordance with ASC 260 Earnings Per Share. Basic net loss per share 
amounts have been computed by dividing net loss by the weighted-average number of shares of common shares outstanding during 
the period. In June 2008, the FASB updated ASC 260 Earnings Per Share by requiring entities, when calculating EPS, to allocate 
earnings to unvested and contingently issuable share-based payment awards that have non-forfeitable rights to dividends or 
dividend equivalents when calculating EPS and also present both basic EPS and diluted EPS pursuant to the two-class method. The 
update to ASC 260 Earnings Per Share was effective January 1, 2009 and required retrospective application. We adopted this 
update on January 1, 2009 and the adoption had no material impact on basic and diluted earnings per share for the years ended 
December 31, 2009, 2008 and 2007. Potential common shares, amounts of unrecognized compensation expense and windfall tax 
benefits have been excluded from diluted net loss per share since they would be anti-dilutive. 

Concentrations of Credit Risk 

Financial instruments that potentially subject Progenics to concentrations of credit risk consist of cash, cash equivalents, 
marketable securities and receivables from Wyeth, Ono or the NIH. We invest our excess cash in money market funds, corporate 
debt securities and federal agency issues. We have established guidelines that relate to credit quality, diversification and maturity 
and that limit exposure to any one issue of securities. We hold no collateral for these financial instruments. 

Cash and Cash Equivalents 

We consider all highly liquid investments which have maturities of three months or less, when acquired, to be cash 

equivalents. The carrying amount reported in the balance sheet for cash and cash equivalents approximates its fair value. Cash and 
cash equivalents subject us to concentrations of credit risk. At December 31, 2009 and 2008, we have invested approximately 
$84,169 and $43,859, respectively, in cash equivalents in the form of money market funds with two major investment companies 
and held approximately $6,734 and $12,327, respectively, in a single commercial bank. Restricted cash of $200 and $520 at 
December 31, 2009 and 2008, respectively, consists of collateral for a letter of credit securing lease obligations and credit card 
balances and the carrying value of restricted cash approximates its fair value. 

Marketable Securities 

In accordance with ASC 320 Investments - Debt and Equity Securities, investments are classified as available-for-sale. 

Available-for-sale securities are carried at fair value, with the unrealized gains and losses reported in comprehensive income (loss). 
The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. Such 
amortization is included in interest income or expense. Realized gains and losses and declines in value judged to be other-than-
temporary, if any, on available-for-sale securities are included in other income or expense. In computing realized gains and losses, 
we compute the cost of its investments on a specific identification basis. Such cost includes the direct costs to acquire the 
securities, adjusted for the amortization of any discount or premium. The fair value of marketable securities has been estimated 
based on a three-level hierarchy for fair value measurements. Interest and dividends on securities classified as available-for-sale 
are included in interest income (see Note 3). 

At December 31, 2009 and 2008, our investment in marketable securities in the current and long term assets sections of 

the consolidated balance sheets included $3.8 million and $4.1 million, respectively, of auction rate securities. Valuation of 
securities is subject to uncertainties that are difficult to predict, such as changes to credit ratings of the securities and/or the 
underlying assets supporting them, default rates applicable to the underlying assets, underlying collateral value, discount rates, 
counterparty risk, ongoing strength and quality of market credit and liquidity and general economic and market conditions. The 
valuation of the auction rate securities we hold is based on an internal analysis of timing of expected future successful auctions, 

F-13 

 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

collateralization of underlying assets of the security and credit quality of the security. As a result of the estimated fair value, we re-
evaluated the valuation of these securities as of December 31, 2009 and the temporary impairment amount decreased $8.0 
thousand from $316.0 thousand at December 31, 2008 to $308.0 thousand. All income generated from these current investments 
was recorded as interest income (see Note 3). 

Fair Value Measurements 

We adopted ASC 820 Fair Value Measurements and Disclosures effective January 1, 2008 and 2009, for financial assets 
and financial liabilities and nonfinancial assets and nonfinancial liabilities, respectively. Fair value measurements and disclosures 
define fair value as the price that would be received in selling an asset or paid in transferring a liability (i.e., the “exit price”) in an 
orderly transaction between market participants at the measurement date, and establish a framework to make the measurement of 
fair value more consistent and comparable. The adoption of fair value measurements and disclosures did not have a material 
impact on our financial position or results of operations. 

We use a three-level hierarchy for fair value measurements that distinguishes between market participant assumptions 
developed from market data obtained from sources independent of the reporting entity (“observable inputs”) and the reporting 
entity’s own assumptions about market participant assumptions developed from the best information available in the circumstances 
(“unobservable inputs”). The hierarchy level assigned to each security in our available-for-sale portfolio is based on our 
assessment of the transparency and reliability of the inputs used in the valuation of such instrument at the measurement date. The 
three hierarchy levels are defined as follows: 

•    Level 1 - Valuations based on unadjusted quoted market prices in active markets for identical securities. 

•    Level 2 - Valuations based on observable inputs other than Level 1 prices, such as quoted prices for similar assets at 

the measurement date, quoted prices in markets that are not active or other inputs that are observable, either directly or 
indirectly. 

•    Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement, and 

involve management judgment. 

Other current assets are comprised of financial instruments and non-financial instruments. The financial instruments 

primarily consist of interest and other receivables of $77 and $2,036 at December 31, 2009 and 2008, respectively, and we believe 
that carrying value is a reasonable estimate of fair value as the receivables are expected to be settled for cash within one year. 
Other assets of $1,667 at December 31, 2009 represent the long term portion of amounts due to Progenics from collaborator. We 
believe that carrying value approximates fair value. 

Fixed Assets 

Leasehold improvements, furniture and fixtures, and equipment are stated at cost. Furniture, fixtures and equipment are 

depreciated on a straight-line basis over their estimated useful lives. Leasehold improvements are amortized on a straight-line basis 
over the life of the lease or of the improvement, whichever is shorter. Costs of construction of long-lived assets are capitalized but 
are not depreciated until the assets are placed in service. 

Expenditures for maintenance and repairs which do not materially extend the useful lives of the assets are charged to 

expense as incurred. The cost and accumulated depreciation of assets retired or sold are removed from the respective accounts and 
any gain or loss is recognized in operations. The estimated useful lives of fixed assets are as follows: 

Computer equipment 
Machinery and equipment 
Furniture and fixtures 
Leasehold improvements 

3 years 
5-7 years 
5 years 

Earlier of life of improvement or lease 

F-14 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Impairment of Long-Lived Assets 

We periodically assess the recoverability of fixed assets and evaluate such assets for impairment whenever events or 
changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In accordance with ASC 360 
Property, Plant, and Equipment - Impairment or Disposal of Long-Lived Assets, if indicators of impairment exist, we assess the 
recoverability of the affected long-lived assets by determining whether the carrying value of such assets can be recovered through 
undiscounted future operating cash flows. If the carrying amount is not recoverable, we measure the amount of any impairment by 
comparing the carrying value of the asset to the present value of the expected future cash flows associated with the use of the asset. 
No impairments occurred as of December 31, 2009, 2008 or 2007. 

Income Taxes 

We account for income taxes in accordance with the provisions of ASC 740 Income Taxes, which requires that we 
recognize deferred tax liabilities and assets for the expected future tax consequences of events that have been included in the 
financial statements or tax returns. Under this method, deferred tax assets and liabilities are determined on the basis of the 
difference between the tax basis of assets and liabilities and their respective financial reporting amounts (“temporary differences”) 
at enacted tax rates in effect for the years in which the temporary differences are expected to reverse. A valuation allowance is 
established for deferred tax assets for which realization is uncertain. 

In accordance with ASC 718 Compensation – Stock Compensation and ASC 505 Equity, we have made a policy decision 

related to intra-period tax allocation, to account for utilization of windfall tax benefits based on provisions in the tax law that 
identify the sequence in which amounts of tax benefits are used for tax purposes (i.e., tax law ordering). 

Uncertain tax positions are accounted for in accordance with ASC 740 Income Taxes, which prescribes a comprehensive 
model for the manner in which a company should recognize, measure, present and disclose in its financial statements all material 
uncertain tax positions that we have taken or expect to take on a tax return. ASC 740 applies to income taxes and is not intended to 
be applied by analogy to other taxes, such as sales taxes, value-add taxes, or property taxes. We review our nexus in various tax 
jurisdictions and our tax positions related to all open tax years for events that could change the status of our ASC 740 liability, if any, or 
require an additional liability to be recorded. Such events may be the resolution of issues raised by a taxing authority, expiration of the 
statute of limitations for a prior open tax year or new transactions for which a tax position may be deemed to be uncertain. Those 
positions, for which management’s assessment is that there is more than a 50 percent probability of sustaining the position upon 
challenge by a taxing authority based upon its technical merits, are subjected to the measurement criteria of ASC 740. We record the 
largest amount of tax benefit that is greater than 50 percent likely of being realized upon ultimate settlement with a taxing 
authority having full knowledge of all relevant information. Any ASC 740 liabilities for which we expect to make cash payments 
within the next twelve months are classified as “short term.” In the event that we conclude that we are subject to interest and/or 
penalties arising from uncertain tax positions, we will record interest and penalties as a component of income taxes (see Note 11). 

Risks and Uncertainties 

We have to date generated only modest amounts of product and royalty revenue, and except for RELISTOR have no 

products approved by the FDA for marketing. There can be no assurance that our research and development will be successfully 
completed, that any products developed will obtain necessary marketing approval by regulatory authorities or that any approved 
products will be commercially viable. In addition, we operate in an environment of rapid change in technology, and we are 
dependent upon establishing satisfactory relationships with one or more partner(s) and the continued services of our current 
employees, consultants and subcontractors. We are also dependent upon Wyeth and/or Ono fulfilling their manufacturing 
obligations, either on their own or through third-party suppliers. For the years ended December 31, 2009, 2008 and 2007, the 
primary sources of our revenues were Wyeth, Ono and research grant and contract revenues from the NIH. There can be no 
assurance that revenues from Wyeth, Ono or from research awards will continue. Substantially all of our accounts receivable at 
December 31, 2009 and 2008 were from the above-named sources. 

Comprehensive Loss 

Comprehensive loss represents the change in net assets of a business enterprise during a period from transactions and 

other events and circumstances from non-owner sources. Our comprehensive loss includes net loss adjusted for the change in net 
unrealized gain or loss on marketable securities. The disclosures required by ASC 220 Comprehensive Income for the years ended 
December 31, 2009, 2008 and 2007 have been included in the Consolidated Statements of Stockholders’ Equity and 

F-15 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Comprehensive Loss. There was no income tax expense/benefit allocated to any component of Other Comprehensive Loss (see 
Note 11). 

Impact of Recently Issued Accounting Standards 

In October 2009, the FASB issued ASU 2009-13 to address the accounting for multiple-deliverable arrangements. In an 

arrangement with multiple deliverables, the delivered items shall be considered a separate unit of accounting if both (i) the 
delivered items have value to a collaborator on a stand-alone basis, in that, the collaborator could resell the delivered items on a 
stand-alone basis, and (ii) the arrangement includes a general right of return relative to the delivered item, delivery or performance 
of the undelivered item or items is considered probable and substantially in our control. This ASU will be effective prospectively 
for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. Early adoption is 
permitted. We are currently evaluating the impact this ASU will have on our financial statements. 

3. Fair Value Measurements and Marketable Securities 

Our available-for-sale investment portfolio consists of marketable securities, including corporate debt securities, 
securities of government-sponsored entities and auction rate securities, and is recorded at fair value in the accompanying 
Consolidated Balance Sheets in accordance with ASC 320 Investments – Debt and Equity Securities. The change in the fair value 
of these marketable securities is recorded as a component of other comprehensive loss (see Note 2). 

Marketable securities consisted of the following: 

Short-term 

Corporate debt securities  

Total short-term marketable securities 

Long-term 

Corporate debt securities and securities of 

government-sponsored entities 

Auction rate securities 

Total long-term marketable securities 

December 31, 

2009 

December 31, 
2008 

$

$

1,501
1,501

63,127
63,127

-
3,792
3,792

18,002
4,059
22,061

85,188

Total marketable securities 

$

5,293

$

The following table presents our available-for-sale investments measured at fair value on a recurring basis as of 

December 31, 2009 and 2008, classified by valuation hierarchy (as previously discussed): 

Description 

Money market funds 
Corporate debt securities 
Auction rate securities 

Total 

  $ 

Fair Value Measurements at Reporting Date Using 
Significant 
Other 
Observable 
Inputs 
 (Level 2) 

Quoted Prices 
in Active 
Markets for 
Identical Assets 
 (Level 1) 

Significant 
Unobservable 
Inputs 
 (Level 3) 

Balance at 
 December 31, 
2009 

  $ 

84,169 

  $

84,169 

  $

- 

  $ 

- 

- 
3,792 
3,792 

1,501 
3,792 
89,462 

  $

- 
- 
84,169 

  $

1,501 
- 
1,501 

  $ 

F-16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Fair Value Measurements at Reporting Date Using 
Significant 
Other 
Observable 
Inputs 
 (Level 2) 

Quoted Prices 
in Active 
Markets for 
Identical Assets 
 (Level 1) 

Significant 
Unobservable 
Inputs 
 (Level 3) 

Balance at 
 December 31, 
2008 

  $ 

43,859 

  $

43,859 

  $

- 

  $ 

- 

Description 

Money market funds 
Corporate debt securities 

and securities of 
government-sponsored 
entities 

Auction rate securities 

Total 

  $ 

81,129 
4,059 
129,047 

  $

- 
- 
43,859 

  $

81,129 
- 
81,129 

  $ 

- 
4,059 
4,059 

At December 31, 2009, we hold $3.8 million (4.2% of total assets measured at fair value) in auction rate securities which 

are classified as Level 3. The fair value of these securities includes $2.9 million of securities collateralized by student loan 
obligations subsidized by the U.S. government and $0.9 million of investment company perpetual preferred stock. Auction rate 
securities are collateralized long-term instruments that were intended to provide liquidity through a Dutch auction process that 
resets the applicable interest rate at pre-determined intervals, typically every 7 to 35 days. Beginning in the first quarter of 2008, 
auctions failed for certain of our auction rate securities because sell orders exceeded buy orders, and we were unable to dispose of 
those securities at auction. We will not realize cash in respect of the principal amount of these securities until a successful auction 
occurs, the issuer calls or restructures the security, the security reaches any scheduled maturity and is paid (which is inapplicable to 
the perpetual preferred mentioned above) or a buyer outside the auction process emerges. As of December 31, 2009, we have 
received all scheduled interest payments on these securities, which, in the event of auction failure, are reset according to the 
contractual terms in the governing instruments. 

The valuation of auction rate securities we hold is based on Level 3 unobservable inputs which consist of our internal 

analysis of (i) timing of expected future successful auctions, (ii) collateralization of underlying assets of the security and (iii) credit 
quality of the security. We re-evaluated the valuation of these securities as of December 31, 2009 and the temporary impairment 
amount decreased $8.0 from $316.0 at December 31, 2008, to $308.0, which is reflected as a part of other comprehensive loss on 
our accompanying Consolidated Balance Sheets. These securities are held “available-for-sale” and the unrealized loss is included 
in other comprehensive loss. Due to the uncertainty related to the liquidity in the auction rate security market and therefore when 
individual positions may be liquidated, we have classified these auction rate securities as long-term assets on our accompanying 
Consolidated Balance Sheets. 

We continue to monitor markets for our investments and consider the impact, if any, of market conditions on the fair 

market value of our investments. We do not believe the carrying values of our investments are other than temporarily impaired and 
therefore expect the positions will eventually be liquidated without significant loss. 

F-17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

For those of our financial instruments with significant Level 3 inputs (all of which are auction rate securities), the 

following tables summarize the activities for the years ended December 31, 2009 and 2008: 

Description 

Balance at beginning of period 
Transfers into Level 3 

Total realized/unrealized gains (losses) (1) 

Included in net loss 
Included in comprehensive income (loss) 

Settlements 
Balance at end of period 
(1)  Total amount of unrealized gains (losses) for the period included 
in other comprehensive loss attributable to the change in fair 
market value of related assets still held at the reporting date 

  $

$

Fair Value Measurements Using Significant 
Unobservable Inputs  
(Level 3) 

  For the Year Ended  
December 31, 2009 

  For the Year Ended 
December 31, 2008 

  $

4,059 
- 

- 
8 
(275) 
3,792 

- 

$ 

$ 

$ 

- 
8,150 

- 
(316) 
(3,775) 
4,059 

(316) 

The following tables summarize the amortized cost basis, the aggregate fair value and gross unrealized holding gains and 

losses at December 31, 2009 and 2008: 

2009: 
Maturities less than one year: 
Corporate debt securities 
Maturities greater than ten years: 

Auction rate securities 

Investments without stated maturity dates: 
     Auction rate securities 

2008: 
Maturities less than one year: 
     Corporate debt securities 
Maturities between one and five years: 
     Corporate debt securities 
     Government-sponsored entities 
Maturities greater than ten years: 

 Auction rate securities 

Investments without stated maturity dates: 
     Auction rate securities 

Amortized 

Cost Basis 

Fair 

Value 

Unrealized Holding 

Gains 

(Losses) 

Net 

$1,501 

1,000 

3,100 
$5,601 

$1,502 

940 

2,852 
$5,294 

$1 

- 

- 
$1 

$- 

(60) 

(248) 
$(308) 

$1 

(60) 

(248) 
$(307) 

Amortized 

Cost Basis 

Fair 

Value 

Unrealized Holding 

Gains 

(Losses) 

Net 

$63,982 

$63,127 

$114 

$(969) 

$(855) 

17,129 
999 

3,200 

1,175 
$86,485 

16,995 
1,007 

2,944 

1,115 
$85,188 

71 
8 

- 

(205) 
- 

(256) 

(134) 
8 

(256) 

- 
$193 

(60) 
  $(1,490) 

(60) 
$(1,297) 

Progenics’ computes the cost of its investments on a specific identification basis. Such cost includes the direct costs to 

acquire the securities, adjusted for the amortization of any discount or premium. 

F-18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

The following table shows the gross unrealized losses and fair value of our marketable securities with unrealized losses 
that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual 
securities have been in a continuous unrealized loss position, at December 31, 2009 and 2008. 

At December 31, 2009: 

Description of Securities 

Fair Value 

Losses 

Fair Value 

Losses 

  Unrealized 

  Unrealized 

Fair 
Value 

  Unrealized 

Losses 

Less than 12 Months 

12 Months or Greater 

Total 

Auction rate securities 

Total 

At December 31, 2008: 

$- 
$-  

$- 
$- 

$3,792 
$3,792 

$(308) 
$(308)     

$3,792 
$3,792 

$(308) 
$(308)  

Description of Securities 

Fair Value 

Losses 

Fair Value 

Losses 

Fair Value 

Losses 

Less than 12 Months 

12 Months or Greater 

  Unrealized 

  Unrealized 

Total 

  Unrealized 

Corporate debt securities 
Auction rate securities 

Total 

$57,567     
4,059 
$61,626 

$(1,174) 
(316) 
$(1,490)  

$- 

$- 

$-   

$-   

$57,567 
4,059 
$61,626 

$(1,174) 
(316) 
$(1,490)  

Other-than-temporary impairment analysis on corporate debt securities. At December 31, 2008, we owned 34 

securities maturing in less than one year, with a gross unrealized loss position of $969 ($46,028 of the total fair value) and there 
were 9 securities in the portfolio maturing between one and two years, with a gross unrealized loss position of $205 ($11,539 of 
the total fair value). The severity of the unrealized losses for the securities in an unrealized loss position at December 31, 2008 was 
between less than one percent and 17.67 percent below amortized cost, and the weighted average duration of the unrealized losses 
of these securities was 6.98 months. 

We have evaluated our individual corporate debt securities holdings for other-than-temporary impairment and determined 

that the unrealized losses as of December 31, 2008 are attributable to our purchase of corporate debt securities which traded at a 
premium in early 2008, and declined in market value during 2008. Because we do not intend to sell these securities, and believe it 
is not more likely than not that we would be required to sell these securities before recovery of principal, we do not consider these 
securities to be other-than-temporarily impaired at December 31, 2008. 

Other-than-temporary impairment analysis on auction rate securities. The unrealized losses in our auction rate 

securities investments were the result of an internal analysis of timing of expected future successful auctions, collateralization of 
underlying assets of the security and credit quality of the security. At December 31, 2009 and 2008, there were two and three 
securities with a gross unrealized loss position of $308 and $316 ($3,792 and $4,059 of the total fair value), respectively. 

The severity of the unrealized losses for auction rate securities at December 31, 2009 and 2008 was between 6 percent 
and 8 percent below amortized cost, and the weighted average duration of the unrealized losses for these securities was 22 and 
9.25 months, respectively. 

We have evaluated our individual auction rate securities holdings for other-than-temporary impairment and determined 

that the unrealized losses as of December 31, 2009 and 2008 are attributable to uncertainty in the liquidity of the auction rate 
security market. Because we do not intend to sell these securities, and believe it is not more likely than not that we would be 
required to sell these securities before recovery of principal, we do not consider these securities to be other-than-temporarily 
impaired at December 31, 2009 and 2008. 

4. Accounts Receivable 

Our accounts receivable represent amounts due to Progenics from research from collaborator, royalties, research grants 

and contract and the sales of research reagents. These amounts are considered to be short-term as they are expected to be collected 
within one year and we believe carrying value approximates fair value. 

F-19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

National Institutes of Health 
Royalties 
Research and development from collaborator 
Other 

Total 

5. Fixed Assets 

Computer equipment 
Machinery and equipment 
Furniture and fixtures 
Leasehold improvements 
Construction in progress 

Less, accumulated depreciation and amortization 

Total 

December 31, 

2009 

2008 

210
589
6,667
56
7,522

$

$

1,107
229
-
1
1,337

December 31, 

2009 

2008 

2,443
13,237
740
10,662
831
27,913
(21,353)
6,560

$

$

2,335
13,161
750
10,546
907
27,699
(16,628)
11,071

$

$

$

$

At December 31, 2009, $5.9 million and $1.6 million of leasehold improvements were being amortized over periods of 

0.3 – 5.8 years and 2.0 – 4.0 years, respectively, under leases with terms through December 31, 2009 and June 30, 2010, 
respectively. At December 31, 2008, $5.8 million, $0.9 million and $0.7 million of leasehold improvements were being amortized 
over periods of 1.0 – 5.8 years, 4.0 – 4.7 years and 8.5 years, respectively, under leases with terms through December 31, 2009, 
June 29, 2012 and December 31, 2014, respectively. 

6. Accounts Payable and Accrued Expenses 

The carrying value of our accounts payable and accrued expenses approximates fair value, as it represents amounts due to 

vendors and employees, which will be satisfied within one year. 

Accounts payable 
Accrued consulting and clinical trial costs 
Accrued payroll and related costs 
Legal and professional fees 
Other 

Total 

$

$

December 31, 

2009 

2008 

596
2,663
1,321
1,070
186
5,836

$

$

899
3,556
1,093
925
23
6,496

7. Stockholders’ Equity 

We are authorized to issue 40,000 shares of common stock, par value $.0013 (“Common Stock”), and 20,000 shares of 
preferred stock, par value $.001. The Board of Directors has the authority to issue common and preferred shares, in series, with 
rights and privileges as determined by the Board of Directors. 

On September 25, 2007, we completed a public offering of 2.6 million shares of our Common Stock, pursuant to a shelf 

registration statement that had been filed with the SEC in 2006, which had registered 4.0 million shares of our Common Stock. We 
received proceeds of $57.3 million, or $22.04 per share, which was net of underwriting discounts and commissions of 
approximately $2.9 million, and paid approximately $0.2 million in other offering expenses. 

F-20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

On April 24, 2008, our Board of Directors approved a share repurchase program to acquire up to $15.0 million of our 

outstanding common shares. During the year ended December 31, 2008, we have repurchased 200,000 of our outstanding common 
shares for a total of $2.7 million. Purchases may be discontinued at any time. We did not repurchase any common shares during 
the year ended December 31, 2009. We have $12.3 million remaining available for purchases under the program. 

8. Commitments and Contingencies 

a. Operating Leases 

As of December 31, 2009, we leased a total of 131,500 square feet of office and laboratory space, under five lease 

agreements, the majority of which expired December 31, 2009, while the remaining leases were to expire in either 2012 or 2014. 
In October 2009, we renewed to December 31, 2020, our lease agreement to lease a total of 149,300 square feet of office and 
laboratory space in six locations in Tarrytown, New York. 

Rental payments are recognized as rent expense on a straight-line basis over the term of the lease. In addition to rents due 
under these agreements, we are obligated to pay additional facilities charges, including utilities, taxes and operating expenses. We 
also lease certain office equipment under non-cancelable operating leases, which expire at various times through August 2010. 

As of December 31, 2009, future minimum annual payments under all operating lease agreements are as follows: 

Years ending 
December 31, 

2010 
2011 
2012 
2013 
      2014 
             Thereafter 
                        Total 

Minimum 
Annual Payments 
$   3,682 
3,777 
3,872 
3,968 
4,067 
26,632 
$   45,998 

Rental expense totaled approximately $2,773, $2,971 and $2,415 for the years ended December 31, 2009, 2008 and 2007, 

respectively. For the years ended December 31, 2009 and 2008, amounts paid exceeded rent expense by $154 and $93, 
respectively, due to the recognition of escalation clauses and lease incentives. For the year ended December 31, 2007, we 
recognized rent expense in excess of amounts paid of $17, due to the recognition of escalation clauses and lease incentives. 
Additional facility charges, including utilities, taxes and operating expenses, for the years ended December 31, 2009, 2008 and 
2007 were approximately $3,060, $3,533 and $2,974, respectively. 

b. Licensing, Service and Supply Agreements 

Progenics has entered into intellectual property-based license and service agreements in connection with their product 
development programs. Progenics has recognized milestone, license and sublicense fees and supply costs, which are included in 
research and development expenses, totaling approximately $788, $2,422 and $988 for the years ended December 31, 2009, 2008 
and 2007, respectively. 

F-21 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Paid from 
inception to 
December 31, 
2009 

Future 
Commitments 

Terms 

Agreement 

Progenics’ agreements with: 

Facet Biotech Corporation (formerly 
Protein Design Labs, Inc.) 

$ 5,350 

$ 2,600 (1) 

Annual maintenance, milestone and royalty payments for the 
humanized murine monoclonal antibody developed by us.  

University of Chicago 

790 

410 

Milestone and royalty payments for rights to develop and 
commercialize methylnaltrexone.  

Sloan-Kettering Institute for Cancer 
Research 

Aquila Biopharmaceuticals, Inc. 

Columbia University 

PSMA LLC’s agreements with: 

Amgen Fremont, Inc. (formerly 
Abgenix) 

1,000 

769 

$1,197 

- 

- 

- (1) 

Terminated in 2008. 

Terminated in 2008. 

Terminated and amended in 2009, under which we retain rights 
to certain technology for sales of reagents and other purposes. 

850 

6,250 (1) 

Annual maintenance and milestone payments to use 
XenoMouse® technology for generating fully human antibodies 
to PSMA LLC’s PSMA antigen. 

AlphaVax Human Vaccines 

2,036 

5,300 (1) 

Seattle Genetics, Inc. 

3,600 

14,000 (1) 

Annual maintenance and milestone payments to use AlphaVax 
Replicon Vector system to create a therapeutic cancer vaccine 
incorporating PSMA LLC’s proprietary PSMA antigen. 

Milestone and periodic maintenance payments to use ADC 
technology to link chemotherapeutic agents to monoclonal 
antibodies that target prostate specific membrane antigen. ADC 
technology is based in part on technology licensed by SGI from 
third parties. 

Cornell Research Foundation 

Former member of PSMA LLC 

110 

128 

915 (1) 

52,197 

Annual minimum royalty and milestone payments. 

Milestone and royalty payments to use technology related to 
PSMA. 

(1) Royalties are estimable upon sales of products under the license. 

c. Consulting Agreements 

As part of our research and development efforts, we enter into consulting agreements with external scientific specialists 

(“Scientists”). These agreements contain various terms and provisions, including fees to be paid by us and royalties, in the event of 
future sales, and milestone payments, upon achievement of defined events, payable by us. Certain Scientists are members of the 
Progenics’ Scientific Advisory Board (the “SAB Members”), including Stephen P. Goff, Ph.D. and David A. Scheinberg, M.D., 
Ph.D., both of whom are also members of our Board of Directors. Some Scientists have purchased our Common Stock or received 
stock options which are subject to vesting provisions. We have recognized expenses with regard to the consulting agreements of 
the SAB Members totaling approximately $220, $358 and $1,092 for the years ended December 31, 2009, 2008 and 2007, 
respectively. Those expenses include the fair value of stock options granted during 2009, 2008 and 2007, which were fully vested 
at grant date, of approximately $83, $217 and $691, respectively. For the year ended December 31, 2007, those expenses include a 
portion of restricted stock, granted in 2007, that vested in 2007, of approximately $127. Such amounts of fair value are included in 
research and development compensation expense for each year presented (see Note 9). 

F-22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

9. Share-Based Payment Arrangements 

Our share-based compensation to employees includes non-qualified stock options, restricted stock and shares issued under 

our Purchase Plans, which are compensatory under ASC 718 Compensation – Stock Compensation. We account for share-based 
compensation to non-employees, including non-qualified stock options and restricted stock, in accordance with ASC 505 Equity. 

Compensation cost for share-based awards will be recognized in our financial statements over the related requisite service 

periods; usually the vesting periods for awards with a service condition. We have made an accounting policy decision to use the 
straight-line method of attribution of compensation expense, under which the grant date fair value of share-based awards will be 
recognized on a straight-line basis over the total requisite service period for the total award. 

We have adopted three stock incentive plans, the 1989 Non-Qualified Stock Option Plan, the 1996 Amended Stock 

Incentive Plan and the 2005 Stock Incentive Plan (the “Plans”). Under each of these Plans as amended, up to 375, 5,000 and 5,450 
shares of common stock, respectively, have been reserved for the issuance of awards to employees, consultants, directors and other 
individuals who render services to Progenics (collectively, “Awardees”). The Plans contain certain anti-dilution provisions in the 
event of a stock split, stock dividend or other capital adjustment as defined. The 1989 Plan provides for the Board, or the 
Compensation Committee (“Committee”) of the Board, to grant stock options to Awardees and to determine the exercise price, 
vesting term and expiration date. The 1996 Plan and the 2005 Plan provide for the Board or Committee to grant to Awardees stock 
options, stock appreciation rights, restricted stock, performance awards or phantom stock, as defined (collectively, “Awards”). The 
Committee is also authorized to determine the term and vesting of each Award and the Committee may in its discretion accelerate 
the vesting of an Award at any time. Stock options granted under the Plans generally vest pro rata over four to ten years and have 
terms of ten to twenty years. Restricted stock issued under the 1996 Plan or 2005 Plan usually vests annually over a four year 
period, unless specified otherwise by the Committee. The exercise price of outstanding non-qualified stock options is usually equal 
to the fair value of our common stock on the date of grant. The exercise price of non-qualified stock options granted from the 2005 
Plan and incentive stock options (“ISO”) granted from the Plans may not be lower than the fair value of our common stock on the 
dates of grant. At December 31, 2009, 2008 and 2007, all outstanding stock options were non-qualified options. The 1989 and 
1996 Plans terminated in April 1994 and October 2006, respectively, and the 2005 Plan will terminate in April 2015; options 
granted before termination of the Plans will continue under the respective Plans until exercised, cancelled or expired. 

We apply a forfeiture rate to the number of unvested awards in each reporting period in order to estimate the number of 
awards that are expected to vest. Estimated forfeiture rates are based upon historical data on vesting behavior of employees. We 
adjust the total amount of compensation cost recognized for each award, in the period in which each award vests, to reflect the 
actual forfeitures related to that award. Changes in our estimated forfeiture rate will result in changes in the rate at which 
compensation cost for an award is recognized over its vesting period. 

Under ASC 718 Compensation – Stock Compensation, the fair value of each non-qualified stock option award is 

estimated on the date of grant using the Black-Scholes option pricing model, which requires input assumptions noted in the 
following table. Ranges of assumptions for inputs are disclosed where the value of such assumptions varied during the related 
period. Historical volatilities are based upon daily quoted market prices of our common stock on The NASDAQ Stock Market 
LLC over a period equal to the expected term of the related equity instruments. We rely only on historical volatility since it 
provides the most reliable indication of future volatility. Future volatility is expected to be consistent with historical; historical 
volatility is calculated using a simple average calculation; historical data is available for the length of the option’s expected term 
and a sufficient number of price observations are used consistently. Since our stock options are not traded on a public market, we 
do not use implied volatility. For the years ended December 31, 2009, 2008 and 2007, our expected term was calculated based 
upon historical data related to exercise and post-termination cancellation activity. Accordingly, for grants made to employees and 
officers (excluding our Chief Executive Officer) and directors, we are using expected terms of 5.3 and 7.3 years, 5.33 and 7.30 
years, and 5.25 and 7.5 years, respectively. The expected term of stock options granted to our Chief Executive Officer and non-
employee directors and consultants are calculated separately from stock options granted to employees and officers and the 
expected term was 8 years and 7.5 years or the years ended December 31, 2009 and 2008. Expected term for options granted to 
non-employee consultants was ten years, which is the contractual term of those options. We have never paid dividends and do not 
expect to pay dividends in the future. Therefore, our dividend rate is zero. The risk-free rate for periods within the expected term 
of the options is based on the U.S. Treasury yield curve in effect at the time of grant. 

F-23 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Expected volatility 
Expected dividends 
Expected term (years) 
Weighted average expected term (years) 
Risk-free rate 

2009 

70% - 91% 
zero 
5.3 – 10 
7.10 
1.78% - 3.22% 

For the Years Ended 
December 31, 
2008 

66% - 91% 
zero 
5.33 - 10 
6.78 
1.69% - 3.79% 

2007 

50% - 89% 
zero 
5.25 - 10 
6.90 

  3.88% - 4.93% 

A summary of option activity under the Plans as of December 31, 2009 and changes during the year then ended is 

presented below: 

Options 

Shares  

Weighted 
Average 
Exercise 
Price 

Weighted Average 
Remaining 
Contractual Term 
(Yr.) 

Aggregate 
Intrinsic 
Value  

Outstanding at January 1, 2009 
Granted 
Exercised 
Forfeited or expired 
Outstanding at December 31, 2009 
Exercisable at December 31, 2009 

4,451 
838 
(8) 
(372) 
4,909 
3,455 

 $18.78 
5.43 
1.33 
18.13 
$16.58 
$18.16 

5.66 
4.55 

$242,653 
$242,653 

The weighted average grant-date fair value of options granted under the Plans during the years ended December 31, 2009, 

2008 and 2007 was $3.39, $10.09 and $16.18, respectively. The total intrinsic value of options exercised during the years ended 
December 31, 2009, 2008 and 2007 was $41, $969 and $3,766, respectively. 

The options granted under the Plans, described above, include 33, 113, 38, 75, 145 and 113 non-qualified stock options 
granted to our Chief Executive Officer on July 1, 2002, 2003, 2004 and 2005, on July 3, 2006 and on July 2, 2007, respectively, 
which cliff vest after nine years and eleven months from the respective grant date. The July 1, 2002, 2003 and 2005 awards have 
fully vested. Vesting of a defined portion of each award will occur earlier if a defined performance condition is achieved; more 
than one condition may be achieved in any period. In accordance with ASC 718 Compensation – Stock Compensation, at the end 
of each reporting period, we will estimate the probability of achievement of each performance condition and will use those 
probabilities to determine the requisite service period of each award. The requisite service period for the award is the shortest of 
the explicit or implied service periods. In the case of the executive’s options, the explicit service period is nine years and eleven 
months from the respective grant dates. The implied service periods related to the performance conditions are the estimated times 
for each performance condition to be achieved. Thus, compensation expense will be recognized over the shortest estimated time 
for the achievement of performance conditions for that award (assuming that the performance conditions will be achieved before 
the cliff vesting occurs). On July 1, 2008 and 2009, we granted awards (consisting of options and restricted stock in 2008 and 
options in 2009) to our Chief Executive Officer which vest on the basis of the achievement of specified performance or market-
based milestones. The options have an exercise price equal to the closing price on our common stock on the date of grant. The 
awards to our Chief Executive Officer are valued using a Monte Carlo simulation and the expense related to these grants will be 
recognized over the shortest estimated time for the achievement of the performance or market conditions. The awards will not vest 
unless one of the milestones is achieved or the market condition is met. Changes in the estimate of probability of achievement of 
any performance or market condition will be reflected in compensation expense of the period of change and future periods affected 
by the change. 

At December 31, 2009, the estimated requisite service periods for the 2004, 2006 and 2009 awards, described above, were 

1.5, 6.25 and 2.0 years, respectively. For the years ended December 31, 2009, 2008 and 2007, the total compensation expense 
recognized for the performance-based options was $0.5 million, $1.3 million and $1.5 million, respectively. 

A summary of the status of our restricted stock awarded under the Plans which has not yet vested as of December 31, 

2009 and changes during the year then ended is presented below: 

F-24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Restricted Stock Awards 

Shares  

Nonvested at January 1, 2009 
Granted 
Vested 
Forfeited 
Nonvested at December 31, 2009 

566 
325 
(306) 
(37) 
548 

Weighted 
Average Grant-
Date 
Fair Value 

$18.81 
5.01 
15.17 
16.26 
$12.82 

Our two employee stock purchase plans (the “Purchase Plans”), the 1998 Employee Stock Purchase Plan (the “Qualified 
Plan”) and the 1998 Non-Qualified Employee Purchase Plan (the “Non-Qualified Plan”), as amended, provide for the issuance of 
up to 3,400 and 1,100 shares of common stock, respectively. The Purchase Plans provide for the grant to all employees of options 
to use an amount equal to up to 25% of their quarterly compensation, as such percentage is determined by the Board of Directors 
prior to the date of grant, to purchase shares of our common stock at a price per share equal to the lesser of the fair market value of 
the common stock on the date of grant or 85% of the fair market value on the date of exercise. Options are granted automatically 
on the first day of each fiscal quarter and expire six months after the date of grant. The Qualified Plan is not available to 
employees owning more than five percent of the common stock and imposes certain other quarterly limitations on the option 
grants. Options under the Non-Qualified Plan are granted to the extent that option grants are restricted under the Qualified Plan. 

The fair value of shares purchased under the Purchase Plans was estimated on the date of grant in accordance with ASC 

718 Compensation – Stock Compensation, via the same option valuation model used for options granted under the Plans, but with 
the following assumptions: 

2009 

46% - 100% 
zero 
6 months 
0.00% - 0.38% 

For the Years Ended 
 December 31, 
2008 

83% - 170% 
zero 
6 months 
0.14% - 2.74% 

2007 

40% - 46% 
zero 
6 months 
3.91% - 5.10% 

Expected volatility 
Expected dividends 
Expected term  
Risk-free rate 

Purchases of common stock under the Purchase Plans during the years ended December 31, 2009, 2008 and 2007 are 

summarized as follows: 

Qualified Plan 

Non-Qualified Plan 

Shares 
Purchased 

2009 
2008 
2007 

872 
538 
179 

Price Range 

$3.37 - $9.13 
$4.26 - $15.32 
$16.27 - $23.46 

Shares 
Purchased 

189 
127 
45 

Price Range 

$3.98 - $9.13 
$6.07 - $15.32 
$17.80 - $23.46 

Weighted 
Average 
Grant-
Date Fair 
Value 

$1.58 
$4.83 
$3.43 

Weighted 
Average 
Grant-
Date Fair 
Value 

$1.49 
$4.44 
$3.41 

F-25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

The total compensation expense of shares, granted to both employees and non-employees, under all of our share-based 

payment arrangements that was recognized in operations during the years ended December 31, 2009, 2008 and 2007 was: 

Years Ended December 31, 
2008 

2007 

2009 

Recognized as: 
Research and Development 
General and Administrative 

Total 

$7,225 
5,761 
  $12,986 

$7,241 
6,892 
$14,133 

$7,104 
8,202 
$15,306 

No tax benefit was recognized related to such compensation cost because we had net losses for the periods presented and 

the related deferred tax assets were fully offset by valuation allowance. Accordingly, no amounts related to windfall tax benefits 
have been reported in cash flows from operations or cash flows from financing activities for the periods presented. 

As of December 31, 2009, there was $9.9 million, $5.1 million and $0.03 million of total unrecognized compensation cost 

related to non-vested stock options under the Plans, the non-vested shares and the Purchase Plans, respectively. Those costs are 
expected to be recognized over weighted average periods of 2.31 years, 1.56 years and 0.04 years, respectively. Cash received 
from exercises under all share-based payment arrangements for the year ended December 31, 2009 was $4.9 million. We issue new 
shares of our common stock upon share option exercise and share purchase. 

In applying the treasury stock method for the calculation of diluted EPS, amounts of unrecognized compensation expense 

and windfall tax benefits are required to be included in the assumed proceeds in the denominator of the diluted EPS calculation 
unless they are anti-dilutive. We incurred net losses for the years ended December 31, 2009, 2008 and 2007 and, therefore, such 
amounts have not been included in the calculations for those periods since they would be anti-dilutive. As a result, basic and 
diluted EPS are the same for each period. We have made an accounting policy decision to calculate windfall tax benefits/shortfalls, 
for purposes of diluted EPS calculation, excluding the impact of pro forma deferred tax assets. This policy decision will apply 
when we have net income. 

10. Employee Savings Plan 

The terms of the amended and restated Progenics Pharmaceuticals 401(k) Plan (the “Amended Plan”), among other 

things, allow eligible employees to participate in the Amended Plan by electing to contribute to the Amended Plan a percentage of 
their compensation to be set aside to pay their future retirement benefits. During 2009, 2008 and 2007, we matched 50%, 100% 
and 100%, respectively, of those employee contributions that are equal to 5%-8% of compensation and are made by eligible 
employees to the Amended Plan (the “Matching Contribution”). In addition, we may also make a discretionary contribution each 
year on behalf of all participants who are non-highly compensated employees. We made Matching Contributions of approximately 
$718, $1,727 and $1,538 to the Amended Plan for the years ended December 31, 2009, 2008 and 2007, respectively. No 
discretionary contributions were made during those years. 

11. Income Taxes 

We account for income taxes using the liability method in accordance with ASC 740 Income Taxes. Deferred income 

taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial 
reporting purposes and the amounts used for income tax purposes. 

There is no provision or benefit for federal or state income taxes for the years ended December 31, 2009, 2008 or 2007. 

We have completed a calculation, under Internal Revenue Code Section 382, the results of which indicate that past ownership 
changes will limit utilization of net operating loss carry-forwards (“NOL’s”) in the future. Future ownership changes may further 
limit the future utilization of net operating loss and tax credit carry-forwards as defined by the federal and state tax codes. 

F-26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Deferred tax assets consist of the following: 

December 31, 

2009 

2008 

Depreciation and amortization 
R&E tax credit carry-forwards 
NYS investment tax credit carry-forwards 
AMT credit carry-forwards 
Net operating loss carry-forwards 
Deferred revenue 
Capitalized research and development expenditures
Stock compensation 
Other items 

Valuation allowance 

    $      6,831     $      6,231 
9,139
-
306
87,672
12,396
-
10,923
2,402
129,069
(129,069)
— 

10,363
1,168
306
83,546
-
23,492
13,142
2,585
141,433
(141,433)
— 

     $ 

     $ 

We do not recognize deferred tax assets considering our history of taxable losses and the uncertainty regarding our ability 

to generate sufficient taxable income in the future to utilize these deferred tax assets. 

For the years ended December 31, 2009 and 2008, we incurred net losses for tax purposes and recognized a full tax 

valuation against deferred taxes. During 2009, we implemented a tax planning strategy to elect and capitalize, for tax purposes 
only, a total of $70.0 million of 2008 and 2009 research and development (“R&D”) costs and amortize these costs over ten years 
for tax purposes. This strategy had the effect of decreasing deferred taxes for net operating losses and increasing deferred taxes for 
capitalized R&D.  

The following is a reconciliation of income taxes computed at the Federal statutory income tax rate to the actual effective 

income tax provision: 

U.S. Federal statutory rate 
State income taxes, net of Federal benefit 
Research and experimental tax credit 
Change in valuation allowance 
Equity compensation 
Investment tax credit 
Other 
Income tax provision 

Year Ended December 31, 
2008 

2007 

2009 

(34.0)% 
(4.6) 
(4.0) 
40.4 
6.3 
(3.8) 
(0.3) 
0.0% 

(34.0)% 
(5.4) 
(4.3) 
43.3 
- 
- 
0.4 
0.0% 

(34.0)% 
(5.6) 
(4.2) 
40.8 
- 
- 
  3.0 
     0.0% 

As of December 31, 2009, we had available, for tax return purposes, unused NOL’s of approximately $229.8 million, 

which will expire in various years from 2018 to 2029, $18.2 million of which were generated from deductions that, when realized, 
will reduce taxes payable and will increase paid-in-capital. 

We have reviewed our nexus in various tax jurisdictions and our tax positions related to all open tax years for events that could 

change the status of our ASC 740 Income Taxes liability, if any, or require an additional liability to be recorded. Such events may be 
the resolution of issues raised by a taxing authority, expiration of the statute of limitations for a prior open tax year or new transactions 
for which a tax position may be deemed to be uncertain. During the years ended December 31, 2009, 2008 and 2007, we had no 
unrecognized tax benefits resulting from tax positions during a prior or current period, settlements with taxing authorities or the 
expiration of the applicable statute of limitations. At December 31, 2009, there were no amounts of unrecognized tax benefits that, if 
recognized, would affect the effective tax rate and there were no tax positions for which it is reasonably possible that the total amounts 
of unrecognized tax benefits will significantly increase or decrease within twelve months from the respective date. As of December 31, 
2009, we are subject to federal and state income tax in the United States. Open tax years relate to years in which unused net operating 

F-27 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

losses were generated or, if used, for which the statute of limitation for examination by taxing authorities has not expired. Our 
open tax years extend back to 1995, with the exception of 1997, during which we reported net income. No amounts of interest or 
penalties were recognized in our Consolidated Statements of Operations or Consolidated Balance Sheets upon adoption of ASC 740 
Income Taxes as of and for the years ended December 31, 2009, 2008 and 2007. 

Our research and experimental (“R&E”) tax credit carry-forwards of approximately $10.4 million at December 31, 2009 
expire in various years from 2010 to 2029. During the year ended December 31, 2009, research and experimental tax credit carry-
forwards of approximately $144 expired. 

12. Net Loss Per Share 

Our basic net loss per share amounts have been computed by dividing net loss by the weighted-average number of 
common shares outstanding during the period. For the years ended December 31, 2009, 2008 and 2007, we reported a net loss and, 
therefore, potential common shares were not included since such inclusion would have been anti-dilutive. The calculations of net 
loss per share, basic and diluted, are as follows: 

Net Loss 
(Numerator) 

  Weighted Average 
Common Shares 
(Denominator) 

Per Share 
Amount 

2009: 

Basic and diluted 

$ (30,612)

31,219

$ (0.98)

2008: 

Basic and diluted 

$ (44,672)

30,142

$ (1.48)

2007: 

Basic and diluted 

$ (43,688)

27,447

$ (1.59)

For the years ended December 31, 2009, 2008 and 2007, potential common shares which have been excluded from diluted 

per share amounts because their effect would have been anti-dilutive include the following: 

Years Ended December 31, 

2009 

2008 

2007 

Weighted 
Average 
Number 

Weighted 
Average 
Exercise Price 

Weighted 
Average 
Number 

Options and warrants 
Restricted stock 

Total 

$17.48

4,705
516
5,221

4,854
522
5,376

Weighted 
Average 
Exercise Price 
$18.01

Weighted 
Average 
Number 

Weighted 
Average 
Exercise Price 

$17.56

4,703
454
5,157

13. Unaudited Quarterly Results 

Summarized quarterly financial data for the years ended December 31, 2009 and 2008 are as follows: 

Revenue 
Net loss 
Net loss per share (basic and diluted) 

Quarter Ended 
March 31, 
2009 
(unaudited) 
$20,904 
(1,788) 
(0.06) 

Quarter Ended 
June 30, 
2009 
(unaudited) 
$5,469 
(15,171) 
(0.49) 

Quarter Ended 
September 30, 
2009 
(unaudited) 
$5,419 
(13,014) 
(0.41) 

  Quarter Ended
December 31, 
2009 
(unaudited) 
$17,155 
(639) 
(0.02) 

F-28 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯ continued 
(amounts in thousands, except per share amounts or unless otherwise noted) 

Revenue 
Net loss 
Net loss per share (basic and diluted) 

Quarter Ended 
March 31, 
2008 
(unaudited) 
$14,762 
(15,485) 
(0.52) 

Quarter Ended 
June 30, 
2008 
(unaudited) 
$28,584 
(2,369) 
(0.08) 

  Quarter Ended 
September 30, 
2008 
(unaudited) 
$17,497 
(12,220) 
(0.40) 

  Quarter Ended
December 31, 
2008 
(unaudited) 
$6,828 
(14,598) 
(0.48) 

F-29 

 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused 

this report to be signed on its behalf by the undersigned, hereunto duly authorized. 

SIGNATURES 

PROGENICS PHARMACEUTICALS, INC. 

By: 

/s/ PAUL J. MADDON 

Paul J. Maddon, M.D., Ph.D. 
(Duly authorized officer of the 
Registrant and Chief Executive Officer, Chief 
Science Officer and Director) 

Date: March 15, 2010 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 

persons on behalf of the registrant in the capacities and on the dates indicated. 

Signature 

/s/ KURT W. BRINER 
Kurt W. Briner 

/s/ PAUL J. MADDON 
Paul J. Maddon, M.D., Ph.D. 

/s/ MARK R. BAKER 
Mark R. Baker, J.D. 

/s/ CHARLES A. BAKER 
Charles A. Baker 

/s/ PETER J. CROWLEY 
Peter J. Crowley 

/s/ MARK F. DALTON 
Mark F. Dalton 

Stephen P. Goff, Ph.D. 

/s/ DAVID A. SCHEINBERG 
David A. Scheinberg, M.D., Ph.D. 

/s/ NICOLE S. WILLIAMS 
Nicole S. Williams 

/s/ ROBERT A. MCKINNEY 
Robert A. McKinney, CPA 

Capacity 

Chairman 

Date 

March 15, 2010 

Chief Executive Officer, Chief Science 
Officer and Director (Principal Executive Officer) 

March 15, 2010 

President and Director 

March 15, 2010 

March 15, 2010 

March 15, 2010 

March 15, 2010 

March __, 2010 

March 15, 2010 

March 15, 2010 

March 15, 2010 

Director 

Director 

Director 

Director 

Director 

Director 

Chief Financial Officer, Senior Vice President, 
Finance & Operations and Treasurer 
(Principal Financial and Accounting Officer) 

S-1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EXHIBIT INDEX 

Exhibit 
Number * 

3.1(14) 
3.2(14) 
4.1(1) 
10.1(1) 
10.2(1) 
10.3(1) 
10.4(1) 
10.5(3) 
10.6(14) 
10.6.1(10) 
10.6.2(10) 
10.6.3(16) 
10.6.4(18) 
10.6.5(18) 
10.7(15) 
10.8(19) 
10.9(1) 
10.10(8) 
10.11(8) 
10.15(5) 
10.16(2)† 
10.16.1(11) 

10.18(4) 
10.19(6)† 
10.19.1(9) 

10.20(7) 

10.21(7) 
10.22(7) 

10.23(11) 
10.24(12) † 

10.25(12) † 

10.26(13) 

10.27(13) † 

10.28(17) 

   Description 
   Restated Certificate of Incorporation of the Registrant. 
   Amended and Restated By-laws of the Registrant. 
   Specimen Certificate for Common Stock, $0.0013 par value per share, of the Registrant. 
   Form of Registration Rights Agreement. 
   1989 Non-Qualified Stock Option Plan‡ 
   1993 Stock Option Plan, as amended‡ 
   1993 Executive Stock Option Plan‡ 
   Amended and Restated 1996 Stock Incentive Plan‡ 
   2005 Stock Incentive Plan‡ 
   Form of Non-Qualified Stock Option Award Agreement‡ 
   Form of Restricted Stock Award Agreement‡ 
  Amended 2005 Stock Incentive Plan ‡ 
  Form of Non-Qualified Stock Option Award Agreement ‡ 
  Form of Restricted Stock Award Agreement ‡ 
   Form of Indemnification Agreement‡ 
   Employment Agreement, dated December 31, 2007, between the Registrant and Dr. Paul J. Maddon‡ 
   Letter dated August 25, 1994 between the Registrant and Dr. Robert J. Israel‡ 
   Amended 1998 Employee Stock Purchase Plan‡ 
   Amended 1998 Non-qualified Employee Stock Purchase Plan‡ 
   Amended and Restated Sublease, dated June 6, 2000, between the Registrant and Crompton Corporation. 
   Development and License Agreements, dated April 30, 1999, between Protein Design Labs, Inc. and the Registrant. 
Letter Agreement, dated November 24, 2003, relating to the Development and License Agreement between Protein 
Design Labs, Inc. and the Registrant. 

   Director Stock Option Plan‡ 
   Exclusive Sublicense Agreement, dated September 21, 2001, between the Registrant and UR Labs, Inc. 

Amendment to Exclusive Sublicense Agreement, dated September 21, 2001, between the Registrant and UR Labs, 
Inc. 
Research and Development Contract, dated September 26, 2003, between the National Institutes of Health and the 
Registrant. 

   Agreement of Lease, dated September 30, 2003, between Eastview Holdings LLC and the Registrant. 

Letter Agreement, dated October 23, 2003, amending Agreement of Lease between Eastview Holdings LLC and the 
Registrant. 

   Summary of Non-Employee Director Compensation‡ 

License and Co-Development Agreement, dated December 23, 2005, by and among Wyeth, acting through Wyeth 
Pharmaceuticals Division, Wyeth-Whitehall Pharmaceuticals, Inc. and Wyeth-Ayerst Lederle, Inc. and the 
Registrant and Progenics Pharmaceuticals Nevada, Inc. 
Option and License Agreement, dated May 8, 1985, by and between the University of Chicago and UR Labs, Inc., as 
amended by (i) Amendment to Option and License Agreement, dated September 17, 1987, by and between the 
University of Chicago and UR Labs, Inc., (ii) Second Amendment to Option and License Agreement, dated 
March 3, 1989, by and among the University of Chicago, ARCH Development Corporation and UR Labs, Inc., and 
(iii) Letter Agreement Related to Progenics’ RELISTOR In-License dated, December 22, 2005, by and among the 
University of Chicago, acting on behalf of itself and ARCH Development Corporation, the Registrant, Progenics 
Pharmaceuticals Nevada, Inc. and Wyeth, acting through its Wyeth Pharmaceuticals Division. 
Membership Interest Purchase Agreement, dated April 20, 2006, between the Registrant Inc. and Cytogen 
Corporation. 
Amended and Restated PSMA/PSMP License Agreement, dated April 20, 2006, by and among the Registrant, 
Cytogen Corporation and PSMA Development Company LLC. 
Consulting Agreement, dated May 1, 1995, between Active Biotherapies, Inc. and Dr. David A. Scheinberg, M.D., 
Ph.D., as amended on June 13, 1995, as assigned to the Registrant, and as amended on January 1, 2001‡ 

10.29(20) † 

  License Agreement, dated as of October 16, 2008, by and among Ono Pharmaceutical Co., Ltd. and the Registrant. 

E-1 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
10.30(20)  † 

10.31(20)  † 

10.32(20)  † 

10.33 †† 

21.1(19) 
23.1 
31.1 

31.2 

32.1 

32.2 

Partial Termination and License Agreement, dated October 16, 2008, by and among Wyeth, acting through Wyeth 
Pharmaceuticals Division, Wyeth-Whitehall Pharmaceuticals, Inc. and Wyeth-Ayerst Lederle, Inc. and the 
Registrant and Progenics Pharmaceuticals Nevada, Inc. 
Consent, Acknowledgment and Agreement, dated as of October 16, 2008, by and among Wyeth, acting through 
Wyeth Pharmaceuticals Division, Wyeth-Whitehall Pharmaceuticals, Inc. and Wyeth-Ayerst Lederle, Inc., the 
Registrant and Ono Pharmaceutical Co., Ltd. 
2008 Agreement Related to Progenics’ MNTX In-License, dated October 16, 2008, by and among the University of 
Chicago, acting on behalf of itself and ARCH Development Corporation, the Registrant, Progenics Pharmaceuticals 
Nevada, Inc. and Ono Pharmaceutical Co., Ltd. 
Termination and Transition Agreement, effective as of October 1, 2009, by and among Wyeth, acting through 
Wyeth Pharmaceuticals Division, Wyeth-Whitehall Pharmaceuticals, Inc., Wyeth-Ayerst Lederle, Inc., and AHP 
Manufacturing B.V., and the Registrant, Progenics Pharmaceuticals Nevada, Inc. and Excelsior Life Sciences 
Ireland Limited. 

   Subsidiaries of the Registrant. 
   Consent of PricewaterhouseCoopers LLP. 

Certification of Paul J. Maddon, M.D., Ph.D., Chief Executive Officer of the Registrant pursuant to 13a-14(a) and 
Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended. 
Certification of Robert A. McKinney, Chief Financial Officer, Senior Vice President, Finance and Operations and 
Treasurer of the Registrant pursuant to 13a-14(a) and Rule 15d-14(a) under the Securities Exchange Act of 1934, as 
amended. 
Certification of Paul J. Maddon, M.D., Ph.D., Chief Executive Officer of the Registrant pursuant to 18 U.S.C. 
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 
Certification of Robert A. McKinney, Chief Financial Officer, Senior Vice President, Finance and Operations and 
Treasurer of the Registrant pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002. 

* 

Exhibits footnoted as previously filed have been filed as an exhibit to the document of the Registrant referenced in the footnote 
below, and are incorporated by reference herein. 

(1) 

   Previously filed in Registration Statement on Form S-1, Commission File No. 333-13627. 

(2) 

   Previously filed in Quarterly Report on Form 10-Q for the quarterly period ended June 30, 1999. 

(3) 

   Previously filed in Registration Statement on Form S-8, Commission File No. 333-120508. 

(4) 

   Previously filed in Annual Report on Form 10-K for the year ended December 31, 1999. 

(5) 

   Previously filed in Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2000. 

(6) 

   Previously filed in Annual Report on Form 10-K for the year ended December 31, 2002. 

(7) 

   Previously filed in Quarterly Report on Form 10-Q for the quarterly period ending September 30, 2003. 

(8) 

   Previously filed in Registration Statement on Form S-8, Commission File No. 333-143671. 

(9) 

   Previously filed in Current Report on Form 8-K filed on September 20, 2004. 

(10)     Previously filed in Current Report on Form 8-K filed on July 8, 2008. 

(11)     Previously filed in Annual Report on Form 10-K for the year ended December 31, 2004. 

(12)     Previously filed in Annual Report on Form 10-K for the year ended December 31, 2005. 

(13)     Previously filed in Quarterly Report on Form 10-Q for the quarterly period ending June 30, 2006. 

(14)     Previously filed in Current Report on Form 8-K filed on May 13, 2005. 

(15)     Previously filed in Quarterly Report on Form 10-Q for the quarterly period ending March 31, 2007. 

(16)     Previously filed in Registration Statement on Form S-8, Commission File No. 333-143670. 

(17)    Previously filed in Annual Report on Form 10-K/A for the year ended December 31, 2006. 

(18)    Previously filed in Current Report on Form 8-K filed on July 8, 2008. 

(19)    Previously filed in Annual Report on Form 10-K for the year ended December 31, 2007. 

(20)    Previously filed in Annual Report on Form 10-K for the year ended December 31, 2008. 

E-2 

 
 
 
 
 
 
  
  
  
 
 
 
 
 
 
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
† 
†† 
‡ 

   Confidential treatment granted as to certain portions omitted and filed separately with the Commission. 
   Confidential treatment requested as to certain portions omitted and filed separately with the Commission. 
   Management contract or compensatory plan or arrangement. 

E-3 

 
 
   
 
 
 
Information for Stockholders

Securities and Related Information

The Company’s Common Stock is traded on the Nasdaq National Market under the symbol PGNX.
As of April 13, 2010 the Company had approximately 300 stockholders of record.

Below are high and low sales prices for the Company’s Common Stock as reported by
Nasdaq for the last two years:

2008 
First Quarter 
Second Quarter  
Third Quarter 
Fourth Quarter   

       ($)  High  Low 
19.25 
  4.33 
  6.66 
17.94 
17.50  11.88 
  6.77 
14.10 

2009 
First Quarter 
Second Quarter  
Third Quarter 
Fourth Quarter   

       ($)  High  Low
10.81  5.08
  7.05  4.50
  6.14  4.92
  5.48  3.53

Company Information

Transfer Agent

For general and fi nancial information about the 
Company, please contact:

American Stock Transfer and Trust Company
40 Wall Street
New York, New York 10005

Progenics Pharmaceuticals, Inc.
777 Old Saw Mill River Road
Tarrytown, NY 10591

Phone: 914-789-2800
Fax: 914-789-2817

E-mail: Investor.Relations@progenics.com
Website: www.progenics.com

Annual Meeting of Stockholders

The Annual Stockholders Meeting
will be held at 10:00 a.m. Eastern Time
on Wednesday, June 9, 2010 at:

Landmark at Eastview
Rockland Room
777 Old Saw Mill River Road
Tarrytown, NY 10591

Independent Accountants

PricewaterhouseCoopers LLP
300 Madison Avenue
New York, New York 10017

Legal Counsel

Dewey & LeBoeuf LLP
1301 Avenue of the Americas
New York, New York 10019

Each stockholder will receive a Notice of Internet 
Availability of proxy materials that will contain 
instructions on how to access the Company’s proxy 
materials online, or request a printed copy or 
emailed copy of these materials at no charge.