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Progenics Pharmaceuticals

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FY2008 Annual Report · Progenics Pharmaceuticals
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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 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;  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,  such  as  those  relating  to  the  recently-announced  acquisition  of  our  RELISTOR® 
collaborator,  Wyeth  Pharmaceuticals,  by  Pfizer  Inc.;  potential  product  liability;  intellectual 
property, litigation, environmental and other risks; the risk that licenses to 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  reports  filed  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.

A Message from the CEO

Dear Shareholders, Employees and Friends,

In 2008, Progenics Pharmaceuticals achieved
its first U.S. product approval: RELISTOR .  
®
This first-in-class drug is now approved in over 30 countries.  

Progenics has entered a new era since our first commercial product approval.  
Following FDA approval last April, our collaborator, Wyeth Pharmaceuticals, began 
full commercialization of subcutaneous RELISTOR in August for the treatment of 
advanced-illness patients with opioid-induced constipation (OIC) – an area of critical 
unmet medical need in an important population. Since the launch, we have been 
working to extend the benefits of this novel drug to broader populations and other 
markets. Part of this effort has been demonstrated by the successful completion of a 
pivotal phase 3 trial in chronic pain patients.  In October, we signed a license 
agreement with Ono Pharmaceutical Co., Ltd. for the development and 
commercialization of subcutaneous RELISTOR in Japan.

ONCOLOGY:  PSMA ADC for the treatment of prostate cancer

We also made significant progress in our clinical programs, initiating clinical trials of 
our investigational drug, PSMA ADC, for the treatment of metastatic prostate cancer. 
PSMA ADC is a monoclonal antibody-drug conjugate that targets prostate-specific 
membrane antigen, a protein abundantly expressed on prostate cancer cells, making 
it a promising therapeutic target.  PSMA ADC is comprised of our fully human 
monoclonal antibody to PSMA that is linked (conjugated) to a potent 
chemotherapeutic drug. PSMA ADC is designed to release the chemotherapeutic 
payload after entering the targeted cancer cell, substantially reducing exposure of 
surrounding non-cancerous cells to the toxic effects of systemic chemotherapy.  We 
expect to report initial results from these clinical studies in the second half of 2009.

We also initiated a clinical trial of a novel PSMA-targeted therapeutic vaccine 
designed to prevent the relapse and recurrence of prostate cancer.

VIROLOGY:  PRO 140 for the treatment of HIV/AIDS

Our HIV program also had meaningful advances in 2008. PRO 140, 
our FDA-designated Fast Track investigational humanized monoclonal antibody for 
the treatment of HIV/AIDS, successfully completed two, phase 2 clinical trials in 
which both subcutaneous and intravenous formulations exhibited robust, potent and 
prolonged activity in HIV-infected individuals. We are developing PRO 140 as an 
injection to be self-administered, once weekly.  We plan to meet with FDA this year 
to determine the next steps in the development of this novel viral-entry inhibitor.

While advancing our clinical programs, we are also guided by a conservative 
financial strategy, especially during these challenging economic times. 
Our significant progress during 2008 was made possible by the financial support of 
our collaborators, Wyeth and Ono, in the form of upfront and milestone payments, 
reimbursement by Wyeth of development expenses, and royalties on worldwide sales 
of RELISTOR.  In addition, Progenics has been awarded approximately $70 million 
in U.S. government grants to date.

We are proud of our strong financial position.  Going forward, we will continue to 
seek multiple non-dilutive revenue sources to conduct leading-edge research and 
development on our own and through existing and new industry relationships. 
We will also continue to set an example of leadership and innovation in the 
biotechnology industry while generating value for our shareholders.

I thank you for your continued support.

Sincerely,

Paul J. Maddon, M.D., Ph.D.
Founder, Chief Executive Officer and Chief Science Officer
April 27, 2009

Corporate Information

Senior Management

Board of Directors

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

Mark R. Baker, J.D.
Executive Vice President - Corporate 

Robert A. McKinney, CPA
Senior Vice President, Finance and 
Operations & Chief Financial Officer 
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 

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

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

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

Richard W. Krawiec, Ph.D.
Vice President, Corporate Affairs 

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

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

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

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

Mark F. Dalton
President
Tudor Investment Corporation

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

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

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 Officer (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, 2008 
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, 2008, based upon the closing 

price of the Common Stock on The NASDAQ Stock Market LLC on that date of $15.87 per share, was $244,987,904 (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 6, 2009, 30,782,252 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 2009 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. 

Submission of Matters to a Vote of Security Holders 

PART II 

1 
13 
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 
26 
Item 6. 
27 
Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations 
44 
Item 7A.  Quantitative and Qualitative Disclosures about Market Risk 
45 
Item 8. 
45 
Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure 
45 
Item 9A.  Controls and Procedures 
46 
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 

47 
47 
47 
47 
47 

48 

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; 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, such as those relating to the recently-announced 
acquisition of our RELISTOR® collaborator, Wyeth Pharmaceuticals, by Pfizer, Inc.; potential product liability; intellectual property, 
litigation, environmental and other risks; the risk that licenses to 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. Thus, 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, virology and oncology. 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 the area of supportive care, our first commercial product, RELISTOR® (methylnaltrexone bromide), was approved by 

the U.S. Food and Drug Administration (FDA) for sale in the United States in April 2008. Our collaboration partner, Wyeth 
Pharmaceuticals, commenced sales of RELISTOR subcutaneous injection in June, and we have begun earning royalties on world-wide 
sales. Regulatory approvals have also been obtained in Canada, the European Union, Australia and Venezuela, and marketing 
applications have been approved or are pending or scheduled in other countries. In October, we out-licensed to Ono Pharmaceutical 
Co., Ltd., Osaka, Japan, the rights to subcutaneous RELISTOR in Japan. We continue development and clinical trials with respect to 
other indications for RELISTOR and our other product candidates. 

In January 2009, Wyeth and Pfizer Inc. announced a definitive agreement under which Pfizer is to acquire Wyeth. We 
understand that the transaction is currently expected to close in late 2009 and is subject to a variety of conditions. The proposed 
acquisition of Wyeth by Pfizer does not trigger any change-of-control provisions in our collaboration with Wyeth, and we believe that 
if the acquisition occurs, the combined Pfizer/Wyeth organization will continue to have the same rights and responsibilities under the 
collaboration following the acquisition as Wyeth had before. We cannot, however, predict how a combined Pfizer and Wyeth may 
view the utility and attractiveness of our collaboration. See Supportive Care, Licenses – Progenics’ Licenses – Wyeth and Risk Factors 
-- We are dependent on Wyeth and Ono to develop and commercialize RELISTOR in their respective areas, exposing us to significant 
risks, including that Wyeth’s announced acquisition by Pfizer may adversely affect our Collaboration, below. 

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

treatment of human immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome (AIDS), and a 
proprietary orally-available small-molecule drug candidate, designated PRO 206, for treatment of hepatitis C virus infection (HCV). 
We have recently selected for further clinical development the subcutaneous form of PRO 140 for treatment of HIV infection, which 
has the potential for convenient, weekly self-administration, and we are conducting preclinical development activities in preparation 
for filing an Investigational New Drug (IND) application for PRO 206. We are also engaged in research regarding a prophylactic 
vaccine against HIV infection. See Virology, below. 

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. See Oncology – Prostate Cancer, below. 

Product Licensing. We also 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 except 
RELISTOR, commercialization of which is the responsibility of Wyeth and Ono in their respective territories. We may also seek 
collaboration partners to accelerate development and assist in achieving full commercialization of our product 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 (note 1). 

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

Program/product candidates 

   Proposed therapeutic area 

  Status (note 2) 

Supportive Care 

RELISTOR-Subcutaneous injection 

RELISTOR-Subcutaneous injection 

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

Phase 3 

Treatment of OIC in patients during 
rehabilitation from an orthopedic surgical 
procedure. 

Phase 2 

RELISTOR-Intravenous 

Management of post-operative ileus. 

Phase 3 

RELISTOR-Oral 

   Treatment of OIC. 

   Phase 2 

Virology 

Human Immunodeficiency Virus (HIV)    
PRO 140 
ProVax 

   Treatment of HIV infection. 
   Treatment and prevention of HIV infection.    Research 

   Phase 2 

Treatment of HCV infection. 

Preclinical 

Hepatitis C Virus (HCV) 
PRO 206 

Oncology 

Prostate cancer/ PSMA-based therapies    
PSMA ADC 
Recombinant protein vaccine (rsPSMA)   

Viral-vector vaccine (PSMA VRP) 

Immunotherapy for prostate cancer. 
   Immunotherapy for prostate cancer. 

Treatment of prostate cancer. 

Phase 1 

Phase 1 
   Phase 1 

(1)   RELISTOR is a Wyeth trademark. The use of RELISTOR beyond four months has not been studied. Full U.S. prescribing                  

information is available at www.RELISTOR.com. 

(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. 

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Supportive Care 

About Opioids. Opioid-based medications such as morphine and codeine are the mainstay of health care practitioners to 
control moderate-to-severe pain. We estimate that in 2007 approximately 240 million prescriptions for opioids were written in the 
U.S. Physicians prescribe opioids for patients receiving palliative care, undergoing surgery or experiencing chronic pain, as well as for 
other medical conditions. 

Opioids relieve pain by interacting with receptors located in the brain and spinal cord, which comprise the central nervous 

system. At the same time, opioids also activate receptors outside the central nervous system, often resulting in constipation. As a result 
of opioid-induced constipation (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 OIC, 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 not 
adequately met by any other approved drug. Because of its chemical composition, RELISTOR has restricted ability to cross the blood-
brain barrier and 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 2008, we earned $25.0 million in milestone payments from Wyeth for FDA and European 

approvals of subcutaneous RELISTOR for the advanced illness setting, and in the second quarter of 2008 we began earning royalties 
on Wyeth’s sales of that product. RELISTOR net sales and related royalties earned in 2008 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 and our financial statements elsewhere in this document. 

Quarter Ended 

June 30, 2008 
September 30, 2008 
December 31, 2008 

Total  

$

$

Net Sales  
By Wyeth 

Royalties  
Earned 

(in thousands) 

2,100
800 
1,500
4,400

$

$

321
117
227
665

We and Wyeth are also developing subcutaneous RELISTOR for treatment of OIC outside the advanced illness setting, in 

individuals with chronic pain not related to cancer, such as severe back pain that requires treatment with opioids (a phase 3 trial 
conducted by Wyeth), and in individuals rehabilitating from an orthopedic surgical procedure in whom opioids are used to control 
post-operative pain (a hypothesis-generating phase 2 trial conducted by us). We are no longer enrolling patients in this latter trial and 
are analyzing data from the treated population. Based on positive results from the one-month blinded portion of the phase 3 chronic 
pain study, we and Wyeth recently initiated an FDA-required one-year, open-label safety study in chronic, non-cancer pain patients 
which is intended to yield a consolidated safety database to enable filing a supplemental New Drug Application (sNDA), which is now 
planned for submission by the end of 2010 for treatment of OIC in the chronic, non-cancer pain population.  

Intravenous RELISTOR. We and Wyeth also have had in development an intravenous formulation of RELISTOR for the 
management of post-operative ileus (POI), a temporary impairment of the gastrointestinal tract function. Results from two phase 3 
clinical trials of this formulation showed that treatment did not achieve primary or secondary end points. Recent results from a third 
phase 3 trial evaluating an intravenous formulation of RELISTOR in patients following abdominal hernia repair have confirmed these 
earlier findings. 

Oral RELISTOR. Wyeth is leading development of an oral formulation of RELISTOR for the treatment of OIC in patients 
with chronic, non-cancer pain. We and Wyeth are evaluating information from optimization studies of a formulation of this product 
candidate to determine the next stages of development. 

Collaborative Marketing and Development Agreements. Under our Collaboration with Wyeth, we share responsibilities for 

developing and obtaining marketing approval of RELISTOR. Wyeth is responsible for commercializing all formulations of 
RELISTOR worldwide other than Japan, where we have licensed the rights to the subcutaneous formulation of RELISTOR to Ono. 
We have an option, under certain circumstances, to co-promote with Wyeth the sale of any or all of the formulations of RELISTOR in 

4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
the United States. Under the Wyeth Collaboration, we are entitled to receive, in addition to royalties on net sales, payments as 
developmental and commercialization milestones for RELISTOR are achieved and reimbursement by Wyeth for expenses we incur in 
connection with the development of RELISTOR under an agreed-upon development plan and budget. Manufacturing expenses for 
RELISTOR are funded by Wyeth. 

Under our exclusive license agreement with Ono, in November 2008 we received from Ono an upfront payment of $15.0 

million, and are entitled to receive potential development milestones 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. 
See Progenics’ Licenses – Wyeth and – Ono Pharmaceutical, below. Some of our rights to RELISTOR arise under a license from the 
University of Chicago. See Progenics’ Licenses – University of Chicago, below. 

Virology 

HIV. An estimated 33 million people worldwide are infected with HIV, which causes a slowly progressing deterioration of 

the immune system resulting in AIDS. Although the majority of infected people reside in sub-Saharan Africa, the current commercial 
market is generally limited to the U.S. and Europe, where it is estimated that over two million people are infected.   

HIV specifically infects cells that have the CD4 receptor on their surface, binding to that receptor and commandeering the 

cell’s reproductive machinery to create thousands of copies of itself (viral replication). Cells presenting the CD4 receptor include 
critical components of the human immune system such as T-lymphocytes, monocytes, macrophages and dendritic cells, and HIV’s 
devastating effects are predominantly due to dysfunction and destruction of these cells resulting from HIV infection. Our scientists 
and their collaborators have made important discoveries in understanding how HIV enters human cells and initiates viral replication. 

Five classes of products have received marketing approval from the FDA for the treatment of HIV infection and AIDS. 

Reverse transcriptase and protease inhibitors inhibit two different viral enzymes required for HIV to replicate once it has entered the 
cell. (Nucleoside and non-nucleoside reverse transcriptase inhibitors are considered as different classes by researchers and prescribers 
alike and have non-overlapping resistance profiles.) Integrase inhibitors inhibit the enzyme that facilitates integration of HIV genetic 
material into the chromosomal DNA of the cell. Entry inhibitors interrupt the viral life cycle at an earlier point, namely before HIV 
can bind to and transfer its genetic material into certain immune system cells in order to initiate the viral replication process. 

The current standard of HIV care is a regimen of protease and reverse transcriptase inhibitor therapies, known as combination 

therapy, which slows the progression of disease but is not a cure. HIV’s rapid mutation rate results in the development of viral strains 
that are resistant to these and other inhibitors, a process that is accelerated by inconsistent dosing that leads to lower drug levels and 
permits viral replication. In addition, many of these currently approved drugs often produce toxic side effects. 

Viral entry inhibitors, such as our drug candidate PRO 140, represent the newest class of drugs for HIV patients. Our 
scientists, in collaboration with researchers at the Aaron Diamond AIDS Research Center, described in an article in Nature in 1996 the 
discovery of a co-receptor for HIV on the surface of human immune system cells used for HIV entry. After HIV binds to the CD4 
receptor, it then binds to the CCR5 co-receptor, enabling fusion of the virus with the cell membrane, facilitating entry of the viral 
genetic information into the cell and subsequent viral replication. Our PRO 140 program is based on blocking binding of HIV to the 
CCR5 co-receptor. Further work by other scientists has established the existence of a second co-receptor, CXCR4, which is 
considered to be less ubiquitous for HIV-1 viral entry. Some strains of HIV use the CXCR4 co-receptor as a portal of entry either 
exclusively or in addition to CCR5. CCR5 viral-entry inhibitors, such as PRO 140, are active in blocking infection in HIV patients 
whose virus uses the CCR5 portal, but do not block the entry of virus that uses the CXCR4 portal. 

PRO 140 is a humanized monoclonal antibody designed to block HIV infection by inhibiting the virus’ ability to bind to and 

enter immune system cells and initiate the viral replication process. PRO 140 targets a distinct site on the co-receptor CCR5. At 
therapeutic concentrations tested to date, PRO 140’s binding to CCR5 does not appear to interfere with the co-receptor’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 have recently selected for further clinical development the subcutaneous form of PRO 140 for the treatment of HIV 
infection, with the goal of developing a long-acting, self-administered therapy. The results from a recently completed clinical study 
indicate that subcutaneous PRO 140 has the potential to be administered weekly. 

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

for HIV-positive individuals. We are currently performing research and development on ProVax in collaboration with the Weill 
Medical College of Cornell University. We have funded this project via a National Institutes of Health contract which NIH has 
committed to fund only through 2008. We have applied for continued funding for this program and are funding it with our own 
resources pending a decision on that application. 

5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
ProVax contains critical surface proteins whose form closely mimics the structures found on HIV. In a pre-clinical model, 

ProVax stimulated the production of specific HIV neutralizing antibodies. When tested in the laboratory, these antibodies inactivated 
certain strains of HIV isolated from infected individuals. The vaccine-stimulated neutralizing antibodies were observed to bind to the 
surface of the virus, rendering it non-infectious. Such neutralizing antibodies against HIV have been difficult to induce with vaccines 
currently in development. 

HCV. We have selected a proprietary orally-available small-molecule drug candidate, designated PRO 206, for clinical 

development as a treatment of HCV infection, 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 (1.6%) have been 
infected with HCV, of whom 3.2 million are chronically infected, and there are an estimated 35,000 new HCV infections in the U.S. 
each year. It is estimated that more than 170 million people worldwide are infected with HCV. Chronic hepatitis C, which is under-
recognized due to slow, asymptomatic progression, can lead to cirrhosis and ultimately liver failure and, as a result, is now the most 
common reason for liver transplantation and the leading cause of liver cancer in the U.S. 

Our HCV treatment candidate, an orally available viral-entry inhibitor designed to prevent HCV from entering and infecting 

healthy liver cells, has exhibited favorable results in pre-clinical and in vitro studies. We are conducting preclinical development 
activities in preparation for filing an IND for PRO 206. 

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 cancer of the prostate 
during their lifetime. The American Cancer Society estimated that 186,320 new cases of prostate cancer would be diagnosed and that 
28,660 men would die from the disease in 2008 in the U.S. 

Conventional therapies for prostate cancer include radical prostatectomy, radiation, hormone therapies and chemotherapy. 

These treatments may have or increase the risk of a variety of side effects, including impotence, incontinence, high cholesterol levels 
and increased blood-clot risk. Hormone therapy and chemotherapy are generally not intended to be curative and are not actively used 
to treat localized, early-stage prostate cancer. 

Through our wholly owned subsidiary, PSMA Development Company LLC (PSMA LLC), 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. In September 2008, we initiated a 
phase 1 dose-escalation clinical study to assess PSMA ADC’s safety, tolerability and initial clinical activity in patients with 
progressive, castrate-resistant prostate cancer.  

We have 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. We are also developing a vaccine combining the PSMA cancer antigen (recombinant 
soluble PSMA) with an immune stimulant to induce an immune response against prostate cancer cells.   

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. 

Progenics’ Licenses 

•  Under the Wyeth Collaboration Agreement, we granted to Wyeth an exclusive, worldwide license to develop and commercialize 
RELISTOR. In October 2008, we reacquired the rights to all formulations of RELISTOR in Japan from Wyeth, and out-licensed the rights 
to subcutaneous RELISTOR in Japan to Ono (see discussion below). We are responsible for developing the subcutaneous and intravenous 
formulations of RELISTOR in the U.S. until they receive regulatory approval, while Wyeth is responsible for these formulations outside 

6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
the U.S. other than Japan. Wyeth is also responsible for developing the oral formulation of RELISTOR, and any other formulation the 
companies may determine to pursue, within the U.S. and the rest of its territory. We own the rights to all formulations, including the oral 
formulation, in Japan, where we have given Ono an exclusive license to the subcutaneous formulation and have granted Ono an option to 
acquire licenses on other formulations in Japan. We own all U.S. regulatory filings and approvals relating to the subcutaneous and 
intravenous formulations, and Wyeth owns all such filings and approvals for the oral formulation. Wyeth also owns all regulatory filings 
and approvals for all formulations outside the U.S. other than in Japan, where Ono owns the filings and approvals relating to subcutaneous 
RELISTOR and we retain the rights to other formulations. 

Costs for the development of RELISTOR incurred by Wyeth or us are paid by Wyeth. We are reimbursed for our out-of-pocket 
development costs by Wyeth and receive reimbursement for our efforts based on our employees devoted to them, all subject to Wyeth’s 
audit rights and possible reconciliation as provided in the Collaboration Agreement. As part of its commercialization responsibilities in its 
territory, Wyeth is obligated to pay all commercialization costs, including manufacturing costs, and retains all proceeds from sales of 
products, subject to royalties and other amounts payable by Wyeth to us. Decisions with respect to commercialization of any products 
developed under the Collaboration Agreement are made solely by Wyeth. 

The Collaboration Agreement establishes Joint Steering and Joint Development Committees, each with an equal number of 

representatives from both Wyeth and us. The JSC is responsible for coordinating the companies’ key activities, while the JDC oversees, 
coordinates and expedites the development of RELISTOR by Wyeth and us. A Joint Commercialization Committee, composed of 
company representatives in number and function according to our respective responsibilities, facilitates open communication between 
Wyeth and us on commercialization matters.  

We have an option to co-promote in the U.S. any of the products developed under the Collaboration Agreement, subject to certain 

conditions. The extent of our co-promotion activities and the fee that we will be paid by Wyeth for our activities will be established if, as 
and when we exercise our option. Wyeth will record all sales of products worldwide (including those sold by us, if any, under a co-
promotion agreement). Wyeth may terminate any co-promotion agreement if a top-15 pharmaceutical company acquires control of us. 
Wyeth has also agreed to certain “standstill” limitations, expiring in June 2009, regarding its ability to purchase our equity securities and to 
solicit proxies. 

The Wyeth Collaboration extends, unless terminated earlier, on a country-by-country and product-by-product basis, until the last-

to-expire royalty period for any product. We may terminate the Wyeth Collaboration at any time upon 90 days written notice to Wyeth 
upon Wyeth’s material uncured breach (30 days in the case of breach of a payment obligation). Wyeth may, with or without cause, 
terminate the Collaboration effective on or after the second anniversary of the first U.S. commercial sale of RELISTOR, by providing 
Progenics with at least 360 days prior written notice. Wyeth may also terminate the agreement (i) upon 30 days written notice following 
one or more specified serious safety or efficacy issues that arise and (ii) upon 90 days written notice of a material uncured breach by 
Progenics. Upon termination of the Wyeth Collaboration, the ownership of the license we granted to Wyeth will depend on which 
party initiates the termination and the reason for the termination. 

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

•  Under an exclusive License Agreement, we have licensed to Ono Pharmaceutical the rights to subcutaneous RELISTOR in 
Japan. Under the Ono License, Ono is responsible for developing and commercializing subcutaneous RELISTOR in Japan, including 
conducting the clinical development necessary to support regulatory marketing approval. Ono is to 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 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. Supervision of and consultation with respect to Ono’s development and commercialization responsibilities will 
be carried out by joint committees consisting of members from both Ono and us. Ono may request us to perform activities related to 
its development and commercialization responsibilities beyond our participation in these 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. The Ono License contains, among other terms, provisions which allow termination by either party upon the occurrence of 
certain events.  

•  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 patent or (iii) the tenth anniversary of the latest filed pending patent application. 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, 

7 

 
 
 
 
 
 
 
 
 
 
 
 
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, 2008, we have paid Facet’s 
predecessors $5.2 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. 

•  For a number of years, we have been party to a license agreement with Columbia University under which we obtained rights 

to technology and materials for a program we have since terminated. As of December 31, 2008, we had paid Columbia a total of 
$890,000 under this license agreement, including $25,000 in royalties. In January 2009, we and Columbia agreed to terminate and 
amend certain rights granted in this license in exchange for a one-time payment of $300,000, which was accrued as of December 31, 
2008. Under this new arrangement, we retain rights to certain technology for sales of reagents and other purposes, subject to royalties. 
We do not expect this new agreement will be material to us. 

•  For a number of years, we were party to a license and supply agreement with Aquila Biopharmaceuticals, Inc., a wholly 

owned subsidiary of Antigenics Inc., for a program we have since terminated. In November 2008, the agreement was terminated and 
a portion of the contingent shares issued to Aquila in connection with the agreement have since been cancelled. We do not believe this 
matter will have any material effect on us. 

PSMA LLC Licenses 

•  PSMA LLC 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 
payments under this license upon the occurrence of defined milestones associated with the development and commercialization 
program for products incorporating an antibody generated utilizing the XenoMouse technology. As of December 31, 2008, PSMA 
LLC has paid to Abgenix $850,000 under this agreement. If PSMA LLC achieves certain milestones specified under the agreement, it 
will be obligated to pay Abgenix up to an additional $6.25 million. In addition, PSMA LLC is required to pay 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 this agreement upon 30 days prior written notice. If not terminated early, 
this 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 also has a worldwide exclusive license agreement with AlphaVax Human Vaccines to use its AlphaVax 
Replicon Vector system to create a therapeutic prostate cancer vaccine incorporating PSMA LLC’s proprietary PSMA antigen. PSMA 
LLC is obligated to make payments under the license upon the occurrence of certain milestones associated with the development and 
commercialization program for products incorporating AlphaVax’s system. As of December 31, 2008, PSMA LLC has paid to 
AlphaVax $1.7 million under this agreement. If PSMA LLC achieves certain milestones specified under the agreement, it will be 
obligated to pay AlphaVax up to an additional $5.3 million. In addition, PSMA LLC is required to pay annual maintenance fees of 
$100,000 until the first commercial sale 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 the agreement upon 30 days prior written notice. If not terminated early, this 
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. 

•  PSMA LLC has a collaboration agreement with Seattle Genetics, Inc., under which SGI has granted PSMA LLC an 
exclusive worldwide license to its proprietary ADC technology. Under the license, PSMA LLC has the right to use this technology to 
link chemotherapeutic agents to PSMA LLC’s monoclonal antibodies that target prostate specific membrane antigen. The ADC 
technology is based, in part, on technology licensed by SGI from third parties. PSMA LLC is responsible for research, product 
development, manufacturing and commercialization of all products under the SGI agreement. PSMA LLC may sublicense the ADC 
technology to a third party to manufacture ADCs for both research and commercial use. Under the agreement, PSMA LLC is 
obligated to make maintenance payments, additional payments aggregating up to $14.0 million upon the achievement of certain 
milestones 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 SGI agreement upon advance written notice to 
SGI. SGI may terminate the agreement if PSMA LLC fails to cure a breach of an SGI in-license within a specified time period after 

8 

 
 
 
 
 
 
 
 
 
 
 
 
written notice. In addition, either party may terminate the SGI agreement after written notice upon an uncured breach or in the event of 
bankruptcy of the other party. As of December 31, 2008, PSMA LLC has paid to SGI approximately $3.6 million under this 
agreement, including $1.0 million in milestone payments. 

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, virology and cancer areas is currently 
comprised, on a worldwide basis, of 171 patents that have been issued and 254 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. 

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.  

9 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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. 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. 

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 

10 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 present 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 

Wyeth is responsible for the supply of RELISTOR for clinical-trial and commercial requirements under the Collaboration 

Agreement, and Ono has similar obligations under the Ono License. 

We have contracted with a third-party contract manufacturing organization (CMO) to produce PRO 140 for our ongoing 

clinical trials. We currently manufacture clinical trial supplies of our PSMA monoclonal antibody in our biologics pilot production 
facilities in Tarrytown, New York, utilizing two 150-liter bioreactors, and have engaged 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 

11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 plan to market products for which we obtain regulatory approval through co-marketing, co-promotion, licensing and 

distribution arrangements with third-party collaborators. We may also consider contracting with a third-party professional 
pharmaceutical detailing and sales organizations to perform promotional and/or medical-scientific support functions for our products. 
Under the terms of our Collaboration Agreement with Wyeth, Wyeth granted us an option to enter into a co-promotion agreement to co-
promote any of the RELISTOR products developed under the Collaboration, subject to certain conditions. The extent of our co-promotion 
activities and the fee that we will be paid by Wyeth for these activities will be established if, as and when we exercise our option. Wyeth 
will record all sales of products worldwide (including those sold by us, if any, under a co-promotion agreement). 

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. Nektar Therapeutics has completed a phase 2 study 
in patients with OIC of an oral peripheral opioid antagonist. Sucampo Pharmaceuticals, Inc., in collaboration with Takeda 
Pharmaceutical Company Limited, is currently conducting phase 3 pivotal clinical trials of AMITIZA® (lubiprostone) for the 
treatment of opioid-induced bowel dysfunction. In addition, Adolor Corporation markets ENTEREG® (alvimopan) for the treatment of 
post-operative ileus, and in Europe Mundipharma International markets TARGIN® (oxycodone/naloxone, a combination of an opioid 
and a systemic opioid antagonist).  

Five classes of products have been approved for marketing by the FDA for the treatment of HIV infection and AIDS. These 

drugs have shown efficacy in reducing the concentration of HIV in the blood and prolonging asymptomatic periods in HIV-positive 
individuals. All have been required to show efficacy in conjunction with other agents, which we have not demonstrated for PRO 140. 
We are aware of several competitors that are marketing or developing small-molecule viral-entry-inhibitor treatments directed against 
CCR5 for HIV infection, including Pfizer’s SELZENTRY™ (maraviroc) tablets and Trimeris’ FUZEON®, but we are unaware of any 
antibody-based viral-entry inhibitor treatments at PRO 140’s stage of clinical development. We are also aware of various HCV drugs 
in pre-clinical or clinical development. 

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. 

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. 

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 
and government institutions. These institutions are becoming increasingly sensitive to the commercial value of their findings and are 
becoming more aggressive in pursuing patent protection and negotiating licensing arrangements to collect royalties for use of 
technology that they have developed. These institutions may also market competitive commercial products on their own or in 
collaboration with competitors and will compete with us in recruiting highly qualified scientific personnel. Any resulting increase in 

12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2008, we had 244 full-time employees, 37 of whom hold Ph.D. degrees, 7 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 such date, 192 employees were engaged in research and development, medical, regulatory affairs and manufacturing 
activities and 52 were engaged in finance, legal, administration and business development. 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 product development programs are 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. 

We are dependent on Wyeth and Ono to develop and commercialize RELISTOR in their respective areas, exposing us to 
significant risks, including that Wyeth’s announced acquisition by Pfizer may adversely affect our Collaboration. 

We are dependent upon Wyeth and Ono in their respective territories to perform and fund development, including clinical 

testing of RELISTOR, make related regulatory filings and manufacture and market products. Revenues from the sale of RELISTOR 
depend almost entirely upon the efforts of Wyeth and, in Japan, Ono. Wyeth and Ono have significant discretion in determining the 
efforts and resources they apply to sales of the RELISTOR products in their territories and may not be effective in marketing such 
products. Our business relationships with Wyeth and Ono may not be scientifically, clinically or commercially successful. 

Wyeth is a large, diversified pharmaceutical company with global operations and its own corporate objectives, which may 

not be consistent with our best interests. In addition, Wyeth and Pfizer have recently entered a definitive agreement under which Pfizer 
is to acquire Wyeth. We cannot predict how a combined Pfizer and Wyeth may view the utility and attractiveness of our 
Collaboration. As a result of completion of this proposed acquisition or for other reasons, Wyeth or Pfizer may change its strategic 
focus or pursue alternative technologies in a manner that results in reduced or delayed revenues to us. We cannot predict whether a 
combined Pfizer and Wyeth will determine to continue, seek to change or terminate our Collaboration, or devote the same resources 
Wyeth currently dedicates to it. If a combined Wyeth and Pfizer were to terminate the Collaboration, we would no longer receive 

13 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
milestone and royalty payments and would need to undertake development and commercialization of RELISTOR ourselves or through 
another collaboration or licensing arrangement. We may not learn of their plans for RELISTOR and our Collaboration unless and until 
the proposed transaction closes.  

If our relationship with Wyeth or Ono terminates and we seek alternative arrangements with one or more other parties to 

develop and commercialize RELISTOR, we may not be able to enter into such an agreement with other suitable companies on 
acceptable terms or at all. To continue to develop and commercialize RELISTOR on our own, we would have to develop sales and 
marketing organization and a distribution infrastructure, neither of which we currently have. Developing these resources would be an 
expensive and lengthy process and would have a material adverse effect on our financial resources and profitability. A termination of 
our relationship with Wyeth could also seriously compromise the development program for RELISTOR and possibly our other 
product candidates, as we could experience significant delays and would have to assume full funding and other responsibility for 
further development and eventual commercialization. Any of these outcomes would result in delays in our ability to distribute 
RELISTOR and would increase our expenses. 

Our relationships with Wyeth and Ono are multi-faceted and involve complex sharing of control over decisions, 
responsibilities, costs and benefits. We have had and may have future disagreements with them concerning product development, 
marketing strategies, manufacturing and supply issues, and rights relating to intellectual property. Both Wyeth and Ono 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.  

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, PRO 206 
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 
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, Wyeth may terminate the Collaboration 
Agreement or 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. 

14 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Ono must conduct clinical trials with Japanese patients to obtain regulatory approval in Japan. We have not tested 

RELISTOR in Japanese patients, and there can be no assurance that clinical trials of RELISTOR in Japanese patients will yield results 
adequate for regulatory approval in Japan. 

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

of our future clinical studies of PRO 140 or PSMA ADC or the pre-clinical and clinical studies involving the PSMA vaccine and 
antibody 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. 

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, 2008, we had an accumulated deficit of $298.7 

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 incur additional operating losses in the future, which could increase 
significantly as we expand our clinical trial programs and other product development efforts. 

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. 

We are likely to need additional financing, but our access to capital funding is uncertain. 

As of December 31, 2008, we had cash, cash equivalents and marketable securities, including non-current portion, totaling 

$141.4 million. During the year ended December 31, 2008, we had a net loss of $44.7 million and cash used in operating activities was 
$28.3 million.  

Although our spending on RELISTOR has been significant during 2007 and 2008, our net expenses for RELISTOR have 
been reimbursed by Wyeth under the Collaboration Agreement. We expect our spending on RELISTOR will decline in 2009 and 
thereafter, which will result in less reimbursement by Wyeth. 

With regard to other product candidates, we expect to continue to incur significant development expenditures, and do not 

have committed external sources of funding for most of these projects. These expenditures will be funded from cash on hand, or we 
may seek additional external funding for them, most likely through collaborative, license or royalty financing agreements with one or 
more pharmaceutical companies, securities issuances or government grants or contracts. We cannot predict when we will need 
additional funds, how much we will need or if additional funds will be available, 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. 

Our access to capital funding is always uncertain. Recent turmoil in the international capital markets has exacerbated this 

uncertainty. Despite previous experience, 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 the future success of 
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. 

A substantial portion of our cash and cash equivalents are guaranteed by the U.S. Treasury or Federal Deposit Insurance 

Corporation’s guarantee programs. Our marketable securities, which include corporate debt securities, securities of government-
sponsored entities and auction rate securities, are classified as available for sale and are predominantly not guaranteed. These 
investments, while rated investment grade by the Standard & Poor’s and Moody’s rating agencies and predominantly having 
scheduled maturities in the first three quarters of 2009, are heavily concentrated in the U.S. financial sector, which continues to be 
under extreme stress. 

As a result of recent changes in general market conditions, 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 February 2008, auctions failed for certain of our auction rate securities because sell orders exceeded buy 

15 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
orders. As a result, at December 31, 2008, we continue to hold approximately $4.1 million of auction rate securities which, in the 
event of auction failure, have been reset according to the contractual terms in the governing instruments. To date, we have received all 
scheduled interest payments on these securities. 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 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. 

Our clinical trials could take longer than we expect. 

Forecasts we publicly announce of commencement and completion times for clinical trials may not be accurate. For example, 

we have experienced delays in our RELISTOR clinical development program 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 agreement with Wyeth 
relating to RELISTOR, Wyeth has the responsibility to conduct some of the clinical trials for that product, including all trials outside 
of the United States other than Japan, where Ono has the responsibility for clinical trials. We have less control over the timing and 
other aspects of these clinical trials than if we conducted them entirely on our own. 

These events may impair investors’ confidence in our ability to develop products and our stock price may decline. 

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. 

16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our product candidates may not obtain regulatory approvals needed for marketing, and may face challenges after approval. 

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 the marketing approval from 
the FDA or any other regulatory authority necessary for commercialization. 

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; 

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

consequences; and 

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

If products fail to receive marketing approval or lose previously received approvals, our financial results would be adversely 

affected. 

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, 
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 products currently in the market 
that will compete with the products that we are developing, including AIDS drugs and chemotherapy drugs for treating cancer. There 
are also products in pre-clinical or clinical development that target the side effects of opioid pain therapy, and Adolor Corporation 
markets ENTEREG® (alvimopan) for the treatment of post-operative ileus, which 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, 

17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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. 

Competing products may adversely affect our products. 

We are aware that Adolor Corporation, in collaboration with GlaxoSmithKline, received FDA approval in May 2008 for 
ENTEREG® (alvimopan), an oral form of an opioid antagonist, for postoperative ileus, “to accelerate the time to upper and lower 
gastrointestinal recovery following partial large or small bowel resection surgery with primary anastomosis.” We are also aware that 
Sucampo Pharmaceuticals, Inc., in collaboration with Takeda Pharmaceutical Company Limited, is currently conducting phase 3 
pivotal clinical trials of AMITIZA® (lubiprostone) for the treatment of opioid-induced bowel dysfunction, and that Nektar 
Therapeutics has completed a phase 2 study of an oral once-a-day peripheral opioid antagonist in patients with OIC. In Europe, we are 
aware that Mundipharma International markets TARGIN® (oxycodone/naloxone, a combination of an opioid and systemic opioid 
antagonist). Any of these drugs may achieve a significant competitive advantage relative to our product. In any event, the considerable 
marketing and sales capabilities of GSK and Takeda may impair our ability to compete effectively in the market. 

In the case of PRO 140, five classes of products have been approved for marketing by the FDA for the treatment of HIV 

infection and AIDS. These drugs have shown efficacy in reducing the concentration of HIV in the blood and prolonging asymptomatic 
periods in HIV-positive individuals. All have been required to show efficacy in conjunction with other agents, which we have not 
demonstrated for PRO 140. We are aware of two approved drugs designed to treat HIV infection by blocking viral entry (Trimeris’ 
FUZEON® and Pfizer’s SELZENTRY™). We are also aware of various HCV drugs in pre-clinical or clinical development. 

If we are unable to negotiate collaborative agreements, our cash burn rate could increase and our rate of product development 
could decrease. 

Our 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 additional collaborative arrangements. If 
we do not enter into new collaborative arrangements, we would have to devote more of our resources to clinical product development 
and product-launch activities, seeking additional sources of capital, and our cash burn rate would increase or we would need to take 
steps to reduce our rate of product development. 

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. 

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

We have limited manufacturing capabilities, which 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 must 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, we will require substantial additional 
funds and will be required to hire and train significant numbers of employees and comply with applicable regulations, which are 

18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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. 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 products, 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. Under the Wyeth 
Collaboration Agreement, Wyeth has the right, at its expense, to defend and enforce the RELISTOR patents licensed to Wyeth by us. 
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 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 

19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 depend 
on Wyeth and Ono, respectively, for the commercialization and development of RELISTOR. We may not be able to maintain these 
relationships 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 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. If we receive marketing approval, significant 
investment, time and managerial resources will be required to build the commercial infrastructure required to market, sell and support 
a pharmaceutical product. Should we choose to commercialize any 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 a third party professional pharmaceutical detailing and sales organization to perform the marketing function for our 
products. Under our license and co-development agreement with Wyeth, Wyeth is responsible for commercializing RELISTOR. To 
the extent that we enter into distribution, co-marketing, co-promotion, detailing or licensing arrangements for the marketing and sale 
of our other products, any revenues we receive will depend primarily on the efforts of third parties. We will not control the amount 
and timing of marketing resources these third parties devote to our products. 

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 in the amount of $2.5 million. 

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 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. 

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 other suppliers. Wyeth may not be able to fulfill its manufacturing obligations for 
RELISTOR, either on its 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. Any delay or disruption in the availability of raw materials would slow or stop 
product development and commercialization of the relevant product. 

20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
A substantial portion of our funding comes 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 in 2007 and 2008, has been derived from federal government 
grants and research contracts. During the years ended December 31, 2006, 2007 and 2008, we generated revenues from awards made 
to us by the NIH between 2003 and 2008, 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 grants or contracts may be less than those 
received to date. Therefore, we will need to provide funding on our own or obtain other funding. 

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 foreign 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. In some foreign countries, particularly member states of the European Union, 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. 

We are exposed to product liability claims, and in the future we may not be able to obtain insurance against these claims at a 
reasonable cost or at all. 

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. 

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 present 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 
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. 

21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2006 and December 31, 2008, our stock price has 

ranged from $30.83 to $4.33 per share. Between January 1, 2009 and March 6, 2009, it has ranged from $5.53 to $10.81 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 current financial and market conditions 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 and Ono regarding the development and commercialization of 

RELISTOR; 

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

•  developments in our relationships with other collaborative partners; 

•  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 on-going operations; 

•  fluctuations in our operating results; and 

•  general market conditions. 

Purchases of our common shares pursuant to our April 24, 2008 announcement of our $15.0 million 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 not initiated or 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, 2008, our directors and executive officers and stockholders affiliated with Tudor Investment Corporation 

together beneficially own or control 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 own or control in the 
aggregate approximately half 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 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 or management more difficult and 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 

22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, and we have filed Form S-8 registration statements registering shares issuable pursuant to our 
equity compensation plans. Any sales by existing stockholders or holders of options 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, 2008. 

Item 2. Properties 

As of December 31, 2008, we occupy in total approximately 145,900 square feet of laboratory, manufacturing and office 

space on a single campus in Tarrytown, New York, as follows:  

Leased 
Space 

Area 
 (Square Feet) 

Termination 
Date 

Other Terms 

Sublease 1 

   91,700 

  December 30, 2009 

Lease 1 

   32,600 

  December 31, 2009 

  Renewable for two five-year terms 

Sublease 2 

    5,900 

June 29, 2012 

  Four months rent-free beginning April 1, 2006; 

Lease 2 

Lease 3 

  December 31, 2014 

converts to Lease 2 

    9,200 

June 29, 2012 

  Three months rent-free beginning August 13, 

2007; renewable for two five-year terms; lease 
incentive of $276,300 provided by landlord 

Lease 4 

    6,500 

  August 31, 2012 

  Renewable for two terms co-terminous with 

Lease 1 

Total 

145,900 

In addition to rents due under these agreements, 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. Submission of Matters to a Vote of Security Holders 

No matters were submitted to a vote of stockholders during the fourth quarter of 2008. 

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. 

Year ended December 31, 2007 
First quarter 
Second quarter 
Third quarter 
Fourth quarter 
Year ended December 31, 2008 
First quarter 
Second quarter 
Third quarter 
Fourth quarter 

High 

Low 

$

30.31   $ 22.02
21.14
27.59  
20.55
26.10  
17.77
23.98  

19.25  
17.94  
17.50  
14.10  

4.33
6.66
11.88
6.77

On March 6, 2009, the last sale price for our common stock, as reported by The NASDAQ Stock Market LLC, was $5.75. 

There were approximately 354 holders of record of our common stock as of March 6, 2009. 

Comparative Stock Performance Graph 

The graph below compares 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, 2003.  

200

150

100

50

0

D
O
L
L
A
R
S

Dividends 

12.31.03

12.31.04

12.31.05

12.31.06

12.31.07

12.31.08

Progenics

Nasdaq U.S. Index

Nasdaq Pharmaceutical Index

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 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Share Repurchase Program 

During 2008, we repurchased 200,000 of our outstanding common shares; we did not repurchase any during the fourth 

quarter (see Management’s Discussion and Analysis of Financial Condition and Results of Operations – Overview). 

25 

 
 
 
 
 
 
 
 
Item 6. Selected Financial Data 

The selected financial data presented below as of December 31, 2007 and 2008 and for each of the three years in the period 
ended December 31, 2008 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, 2004, 2005 and 2006 and for each of the two years in the 
period ended December 31, 2005 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 from collaborator 
Royalty income 
Research and development from joint venture 
Research grants and contracts 
Other revenues 

Total revenues 

Expenses: 

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

Total expenses 
Operating loss 
Other income (expense): 
Interest income 
Interest expense 
Loss 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, 

2004 

2005 

2006 

2007 

2008 

(in thousands, except per share data) 

$        -
-
2,008
7,483
85
9,576

35,673
-
390
12,580
2,134
1,566
52,343
(42,767)

780
-
(31)
749
(42,018)
-
$(42,018)

$        -
-
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)

$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)

$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)

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

82,305
-
2,830
28,834
-
4,609
118,578
(50,907)

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

$(2.48)

$(3.33)

$(0.84)

$(1.60)

$(1.51)

December  31, 

2004 

2005 

2006 

2007 

2008 

(in thousands) 

$31,207
25,667
39,545
-
42
31,838

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

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

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

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

26 

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

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, virology and oncology. 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. We have only recently begun to derive revenue from a commercial product. 
In order to commercialize the principal products that we have under development, we have been and continue to address a number of 
technological and clinical challenges and comply with comprehensive U.S. and non-U.S. regulatory requirements. We expect to incur 
additional operating losses in the future, which could increase significantly as we expand our clinical trial programs and other product 
development efforts. 

Our sources of revenues through December 31, 2008 have been payments under our current and former collaboration 

agreements, from PSMA LLC, from research grants and contracts from the NIH related to our cancer and virology programs, from 
interest income and royalties. Beginning in January 2006, we have been recognizing revenues from Wyeth for reimbursement of our 
development expenses for RELISTOR as incurred, for the $60.0 million upfront payment we received from Wyeth over the period of 
our development obligations and for any milestones or contingent events that are achieved during our collaboration with Wyeth. We 
have not recognized revenue from PSMA LLC for the years ended December 31, 2006, 2007 or 2008, since during 2006, prior to our 
acquisition of our former partner’s membership interest in PSMA LLC on April 20, 2006, the partners had not approved a work plan 
and budget for 2006 and subsequently PSMA LLC has become our wholly owned subsidiary. To date, our product sales have 
consisted solely of limited revenues from the sale of research reagents. We expect that sales of research reagents in the future will not 
significantly increase over current levels. 

A majority of our expenditures to date have been for research and development activities. During 2008, expenses for our HIV 

research program have increased significantly over those in 2006 and 2007 while expenses for our RELISTOR and cancer research 
programs declined compared to 2006 and 2007. We expect our expenses for RELISTOR will decline in 2009 and thereafter, which 
will result in less reimbursement revenues from Wyeth. We expect to incur significant development expenses for our other programs 
as these programs progress. A portion of these expenses is reimbursed through government funding. 

At December 31, 2008, we had cash, cash equivalents and marketable securities totaling $141.4 million. We expect that cash, 
cash equivalents and marketable securities on hand at December 31, 2008 will be sufficient to fund operations at current levels beyond 
one year. Cash used in operating activities for the year ended December 31, 2008 was $28.3 million. We have had recurring losses and 
had, at December 31, 2008, an accumulated deficit of $298.7 million. During the year ended December 31, 2008, we had a net loss of 
$44.7 million. Our most recent public offering of common stock occurred during the year ended December 31, 2007, and we received 
net proceeds of $57.1 million. Other than potential revenues from RELISTOR, which we expect to decline, we do not anticipate 
generating significant recurring revenues, from royalties, product sales or otherwise, in the near term, and we expect to incur 
significant expenses. 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, RELISTOR®, was approved by the FDA for sale in the United States in April 

2008. Our collaboration partner, Wyeth Pharmaceuticals, commenced sales of RELISTOR subcutaneous injection in June, and we 
have begun earning royalties on world-wide sales. Regulatory approvals have also been obtained in Canada, the European Union, 
Australia and Venezuela, and marketing applications have been approved or are pending or scheduled in other countries. In October, 
we out-licensed to Ono Pharmaceutical Co., Ltd., Osaka, Japan, the rights to subcutaneous RELISTOR in Japan. We continue 
development and clinical trials with respect to other indications for RELISTOR. 

In January 2009, Wyeth and Pfizer Inc. announced a definitive agreement under which Pfizer is to acquire Wyeth. We 
understand that the transaction is currently expected to close in late 2009 and is subject to a variety of conditions. The proposed 
acquisition of Wyeth by Pfizer does not trigger any change-of-control provisions in our collaboration with Wyeth, and we believe that 
if the acquisition occurs, the combined Pfizer/Wyeth organization will continue to have the same rights and responsibilities under the 
Collaboration following the acquisition as Wyeth had before. We cannot, however, predict how a combined Pfizer and Wyeth may 
view the utility and attractiveness of our Collaboration. As a result of completion of this proposed acquisition or for other reasons, 
Wyeth or Pfizer may change its strategic focus or pursue alternative technologies in a manner that results in reduced or delayed 
revenues to us. We cannot predict whether a combined Pfizer and Wyeth will determine to continue, seek to change or terminate our 

27 

 
 
 
 
 
 
 
 
 
 
 
Collaboration, or devote the same resources Wyeth currently dedicates to it. If a combined Wyeth and Pfizer were to terminate the 
Collaboration, we would no longer receive milestone and royalty payments and would need to undertake development and 
commercialization of RELISTOR ourselves or through another collaboration or licensing arrangement. We may not learn of their 
plans for RELISTOR and our Collaboration unless and until the proposed transaction closes. 

In 2008, we earned $25.0 million in milestone payments from Wyeth for FDA and European approvals of subcutaneous 

RELISTOR for the advanced illness setting, and in the second quarter of 2008 began earning royalties on Wyeth’s sales of that 
product. In April 2008, our Board of Directors approved a share repurchase program to acquire up to $15.0 million of our outstanding 
common shares, funding for which came from the $15.0 million milestone payment we received from Wyeth related to U.S. marketing 
approval for RELISTOR. Purchases under the program were to be made at our discretion subject to market conditions in the open-
market or otherwise, and in accordance with the regulations of the SEC, including Rule 10b-18. During 2008, we repurchased 200,000 
of our outstanding common shares. Purchases may be discontinued at any time. Reacquired shares will be held in treasury until 
redeployed or retired. We have $12.3 million remaining available for purchases under the program.  

We and Wyeth are also developing subcutaneous RELISTOR for treatment of OIC outside the advanced illness setting, in 

individuals with chronic pain not related to cancer, such as severe back pain that requires treatment with opioids (a phase 3 trial 
conducted by Wyeth), and in individuals rehabilitating from an orthopedic surgical procedure in whom opioids are used to control 
post-operative pain (a hypothesis generating phase 2 trial conducted by us). We are no longer enrolling patients in this latter trial and 
are analyzing data from the treated population. Based on positive results from the one-month blinded portion of the phase 3 chronic 
pain study, we and Wyeth recently initiated and FDA-required one-year, open-label safety study in chronic, non-cancer pain patients 
which is intended to yield a consolidated safety database to enable filing an sNDA, which is now planned for submission by the end of 
2010 for treatment of OIC in the chronic, non-cancer pain population. 

We and Wyeth also have had in development an intravenous formulation of RELISTOR for the management of POI, a 

temporary impairment of the gastrointestinal tract function. Results from two phase 3 clinical trials of this formulation showed that 
treatment did not achieve primary or secondary end points. Recent results from a third phase 3 trial evaluating an intravenous 
formulation of RELISTOR in patients following abdominal hernia repair have confirmed these earlier findings. 

Wyeth is leading development of an oral formulation of RELISTOR for the treatment of OIC in patients with chronic, non-

cancer pain. We and Wyeth are evaluating information from optimization studies of a formulation of this product candidate to 
determine the next stages of development. 

Development and commercialization of RELISTOR is being conducted under the Wyeth Collaboration Agreement. Under 
that agreement, we (i) have received an upfront payment from Wyeth, (ii) have received and are entitled to receive further additional 
payments as certain developmental milestones for RELISTOR are achieved, (iii) have been and are entitled to be reimbursed by 
Wyeth for expenses we incur in connection with the development of RELISTOR under an agreed-upon development plan and budget, 
and (iv) have received and are entitled to receive royalties and commercialization milestone payments. These payments will depend on 
continued success in development and commercialization of RELISTOR, which are in turn dependent on the actions of Wyeth and the 
FDA and other regulatory bodies, as well as the outcome of clinical and other testing of RELISTOR. Many of these matters are 
outside our control. Manufacturing and commercialization expenses for RELISTOR are funded by Wyeth. Wyeth has elected, as it 
was entitled to do under the Collaboration Agreement, not to develop RELISTOR in Japan, and as provided in that Collaboration 
Agreement returned to us the rights to RELISTOR in Japan. As discussed below, we have out-licensed the rights to subcutaneous 
RELISTOR in Japan which we reacquired from Wyeth as a result of its election. 

At inception of the Wyeth collaboration, Wyeth paid to us a $60.0 million non-refundable upfront payment. Wyeth has made 

$39.0 million in milestone payments since that time and is obligated to make up to $295.0 million in additional payments to us upon the 
achievement of milestones and contingent events in the development and commercialization of RELISTOR, taking into account the Ono 
transaction discussed below. Costs for the development of RELISTOR incurred by Wyeth or us starting January 1, 2006 are paid by Wyeth. 
We are being reimbursed for our out-of-pocket development costs by Wyeth and receive reimbursement for our efforts based on the 
number of our full-time equivalent employees devoted to the development project, all subject to Wyeth’s audit rights and possible 
reconciliation as provided in the Agreement. During the applicable royalty periods, Wyeth is obligated to pay to us royalties on the net sales 
of RELISTOR by Wyeth throughout the world other than Japan, where we have licensed the rights to subcutaneous RELISTOR to Ono. 

In January 2006, we began recognizing revenue from Wyeth for reimbursement of our development expenses for RELISTOR 

as incurred during each quarter under the development plan agreed to by us and Wyeth. We also began recognizing revenue for a 
portion of the $60.0 million upfront payment we received from Wyeth, based on the proportion of the expected total effort for us to 
complete our development obligations, as reflected in the most recent development plan and budget approved by us and Wyeth, that 
was actually performed during that quarter. Starting June 2008, we began recognizing royalty income based on the net sales of 
RELISTOR, as defined, by Wyeth. 

28 

 
 
 
 
 
 
 
 
 
 
 
 
 
In October 2008, we entered into an exclusive License Agreement with Ono under which we licensed to Ono the rights to 
subcutaneous RELISTOR in Japan. Under that agreement, in November 2008 we received from Ono an upfront payment of $15.0 
million, and are entitled to receive potential development milestones of up to $20.0 million, commercial milestones and royalties on 
sales by Ono of subcutaneous RELISTOR in Japan. These payments will depend on continued success in development and 
commercialization of RELISTOR, which are in turn dependent on the actions of Wyeth, Ono, the FDA, Japanese pharmaceutical 
regulatory authorities and other regulatory bodies, as well as the outcome of clinical and other testing of RELISTOR. Many of these 
matters are outside our control. 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. Supervision of and 
consultation with respect to Ono’s development and commercialization responsibilities will be carried out by joint committees 
consisting of members from both Ono and us. Ono may request us to perform activities related to its development and 
commercialization responsibilities beyond our participation in these 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. 

As a result of the return of the Japanese rights, we will not receive from Wyeth, milestone payments related to the 
development of RELISTOR formulations in Japan. These potential future milestone payments would have totaled $22.5 million (of 
which $7.5 million related to the subcutaneous formulation of RELISTOR and the remainder to the intravenous and oral 
formulations). Taking these adjustments into account, we now have the potential to receive a total of $334.0 million in development 
and commercialization milestone payments from Wyeth under the Wyeth Collaboration (of which $60.0 million relate to the 
intravenous formulation of RELISTOR), and of which $39.0 million ($5.0 million relating to the intravenous formulation) have been 
paid to date. 

Virology. In the area of virology, we are developing two viral-entry inhibitors: a humanized monoclonal antibody, PRO 140, 

for treatment of HIV, the virus that causes AIDS, and a proprietary orally-available small-molecule drug candidate, designated PRO 
206, for treatment of HCV infection. We have recently selected for further clinical development the subcutaneous form of PRO 140 
for treatment of HIV infection, which has the potential for convenient, weekly self-administration, and we are conducting preclinical 
development activities in preparation for filing an IND application for PRO 206. We are also engaged in research regarding a 
prophylactic vaccine against HIV infection. 

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. 

Results of Operations (amounts in thousands) 

Revenues: 

Our sources of revenue during the years ended December 31, 2008, 2007 and 2006, included our Collaboration with Wyeth, 
which was effective on January 1, 2006, 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 

2008 

2007 

2006 

2008 vs. 2007 

  2007 vs. 2006 

Percent Change 

Research from collaborator 
Royalty income 
Research grants and contract 
Other revenues 

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

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

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

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

12% 
N/A 
(12%) 
59% 
8% 

2008 vs. 2007 

Research revenue from collaborator relates to our Collaboration with Wyeth. From the inception of the Wyeth 
Collaboration through December 31, 2008 we recognized as revenue: (i) in October 2006, $5,000 milestone payment in connection 
with the initiation of the first phase 3 clinical trial of intravenous RELISTOR, (ii) 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, (iii) in April 2008, $15,000 milestone payment related to the FDA approval of 
subcutaneous RELISTOR and (iv) 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 the five milestones achieved since inception of the 

29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Wyeth Collaboration through December 31, 2008, 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, 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 payments earned upon the achievement of milestones defined in the Wyeth 
Collaboration.  

From the inception of the Wyeth Collaboration through December 31, 2008, we recognized $45,437 of revenue from the 

$60,000 upfront payment, $99,318 as reimbursement for our development costs, and a total of $39,000 for non-refundable milestone 
payments.  

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. As a result, the 
amount of revenue recognized from the upfront payment during the year ended December 31, 2008 declined by $6,150 as compared to 
2007.  

As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we have recorded $15.0 million as 

deferred revenue – current, which we expect to recognize as revenue during the first quarter of 2009, upon satisfaction of our 
performance obligations. 

Royalty income. We began earning royalties from net sales by Wyeth of subcutaneous RELISTOR in June 2008. 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 is expected to be recognized as royalty income over the period of our development obligations relating to RELISTOR, 
which we currently estimate will be in 2009. Our royalties from net sales by Wyeth of RELISTOR, as defined, are based on royalty 
rates under our Collaboration. These rates can range up to 30% of U.S. and 25% of foreign net sales at the highest sales levels. 
Royalty rates will increase on incremental sales as net sales in a calendar year exceed specified levels. 

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 provides for pre-clinical research, development and early clinical testing. These funds are being used principally in 
connection with our ProVax HIV vaccine program. The NIH Contract originally provided for up to $28,562 in funding to us, subject 
to annual funding approvals and compliance with its terms, over five years. The total of our approved award under the NIH Contract 
through December 2008 amounted to $15,509. Funding under this contract includes the payment of an aggregate of $1,617 in fees, 
subject to achievement of specified milestones. Through December 31, 2008, we had recognized revenue of $15,509 from this 
contract, including $180 for the achievement of two milestones. We were informed by the NIH that it has decided to fund the NIH 
Contract only through December 2008. We have applied for continued funding for this program and are funding it with our own 
resources pending a decision on that application. 

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 and contract 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.  

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

2008 from $116 for the year ended December 31, 2007.  

2007 vs. 2006 

Research revenues from collaborator. During the years ended December 31, 2007 and 2006, we recognized $65,455 and 

$58,415, respectively, of revenue from Wyeth, consisting of (i) $16,378 and $18,831, respectively, of the $60,000 upfront payment we 
received upon entering into our Collaboration in December 2005, (ii) $40,077 and $34,584, respectively, as reimbursement of our 
development expenses, and (iii) $9,000 and $5,000, respectively, of non-refundable payments earned upon the achievement of 
milestones defined in the Wyeth Collaboration Agreement.  

30 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Research grants and contract. Revenues from research grants and contract from the NIH decreased to $10,075 for the year 

ended December 31, 2007 from $11,418 for the year ended December 31, 2006; $6,185 and $8,052 from grants and $3,890 and 
$3,366 from the NIH Contract for the years ended December 31, 2007 and 2006, respectively. The decrease in grant revenue resulted 
from completion of certain grants in 2006 and fewer reimbursable expenses in 2007 than in 2006 on new and continuing grant related 
projects. In addition, there was increased activity under the NIH Contract.  

Other revenues, primarily from higher orders for research reagents increased to $116 for the year ended December 31, 2007 

from $73 for the year ended December 31, 2006. We received more orders for research reagents during 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 in-process research and 
development, license fees and royalty expense, decreased to $85,135 for the year ended December 31, 2008 from $96,176 for the year 
ended December 31, 2007, and increased from $75,310 in the year ended December 31, 2006. Research and development expenses for 
2006 include a one-time charge of $13,209 related to our purchase of a former member’s equity interest in PSMA LLC (see Business 
– Oncology – PSMA). During 2008, the decrease in research and development expenses over those in 2007 and 2006, net of the one-
time charges in 2006, was primarily due to a decrease in activity related to the PSMA clinical program, and, to a lesser extent, net 
activity related to our HCV research and pre-clinical programs, partially offset by an increase in the PRO 140 program. Expenses for 
RELISTOR in 2008 were also lower than in 2007 and 2006, due to enrollment delays in the phase 2 trial for subcutaneous RELISTOR 
and conclusion of the phase 3 trial for intravenous RELISTOR. See Liquidity and Capital Resources – Uses of Cash, for details of the 
changes in these expenses by project. Beginning in 2006, Wyeth is reimbursing us for development expenses we incur related to 
RELISTOR under the development plan agreed to between Wyeth and us. A portion of our expenses related to our HIV, HCV and 
PSMA programs is 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) 

$24,383 

$24,061 

$17,013 

1% 

41% 

2008 

2007 

2006 

2008 vs. 2007 

  2007 vs. 2006 

Percent change 

2008 vs. 2007   Company-wide compensation 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. 

2007 vs. 2006   Company-wide compensation increased due to an increase in average headcount to 190 from 134 for the years ended 
December 31, 2007 and 2006, respectively, in the research and development, manufacturing and clinical departments. 

Share-based compensation (non-cash) 

$7,241 

$7,104 

$5,814 

2% 

22% 

2008 

2007 

2006 

  2008 vs. 2007 

  2007 vs. 2006 

Percent change 

2008 vs. 2007   Increase due to increase in average headcount, increase in employee stock purchase plan expenses and additional 
grants made during the year ended December 31, 2008, partially offset by lower compensation expense due to fully vested awards and 
an increase in the directors and officers forfeiture rate. 

2007 vs. 2006   Increase due to increase in headcount and changes in the fair value of our common stock. 

See Critical Accounting Policies − Share-Based Payment Arrangements.  

Clinical trial costs 

$14,127 

$19,225 

$9,485 

(27%) 

103% 

2008 

2007 

2006 

  2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease primarily related to RELISTOR ($6,686), due to reduced clinical trial activities in 2008 and remaining costs 
for termination of GMK study in 2007 ($1,534). These decreases were partially offset by an increase in HIV ($3,122) due to increased 
PRO 140 clinical trial activities in 2008.  

2007 vs. 2006   Increase primarily related to RELISTOR ($10,901) due to the global pivotal phase 3 clinical trial of the intravenous 
formulation of RELISTOR which began in the fourth quarter of 2006 and Other projects ($2). The increases were partially offset by 

31 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
decreases in Cancer ($778), due to termination of the GMK study in the second quarter of 2007, and HIV-related costs ($385), 
resulting from a decline in clinical site payments and other clinical expenses related to the phase 1b clinical trial of PRO 140 for which 
enrollment and dosing of subjects was complete by December 2006. During 2007, data from that trial was analyzed. 

Laboratory supplies 

$3,944 

$5,196 

$5,522 

(24%) 

(6%) 

2008 

2007 

2006 

  2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease in HIV ($808), due to purchase of less drug supplies in 2008 compared to 2007, Cancer ($235), due to fewer 
expenses for PSMA and GMK and Other projects ($209).  

2007 vs. 2006   Increase in HIV-related costs ($1,134), due to internal manufacture of drug materials for the phase 2 PRO 140 clinical 
trial, and in Other projects ($615), primarily Hepatitis C virus research costs. The increases were partially offset by a decrease in 
RELISTOR ($1,564) due to the purchase of more RELISTOR drug in the 2006 period than in the 2007 period, and Cancer ($511) due 
to a decrease in basic research costs in 2007 for Cancer (primarily PSMA). 

Contract manufacturing and 
subcontractors 

2008 

2007 

2006 

  2008 vs. 2007 

2007 vs. 2006 

Percent change 

$21,681 

$26,051 

$12,448 

(17%) 

109% 

2008 vs. 2007   Decrease in Cancer ($5,401), primarily due to contract manufacturing expenses for PSMA in 2007 but not in 2008, 
and RELISTOR ($2,301), partially offset by increases in HIV ($3,052) due to manufacturing expenses for PRO 140 in 2008 but not in 
2007 and Other ($280). 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. 

2007 vs. 2006   Increase in HIV ($8,228), Cancer ($5,274) and Other projects ($1,791), which was partially offset by a decrease in 
RELISTOR ($1,690) related to clinical trials under our Collaboration with Wyeth. 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 

$3,514 

$4,722 

$5,286 

(26%) 

(11%) 

2008 

2007 

2006 

  2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease in RELISTOR ($1,579) and Other projects ($174), partially offset by increases in HIV ($294) and Cancer 
($251). 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. 

2007 vs. 2006   Decrease in RELISTOR ($1,351) partially offset by increases in HIV ($350), Cancer ($107) and Other projects 
($330). 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 

2008 

$2,830 

2007 

$942 

2006 

  2008 vs. 2007 

2007 vs. 2006 

Percent change 

$390 

200% 

142% 

2008 vs. 2007   Increase primarily due to HIV ($1,100), RELISTOR ($522) and Cancer ($266) expenses in 2008 but not in 2007. 

2007 vs. 2006   Increase primarily related to our HIV program ($30), Cancer ($412) related to PSMA license agreements and 
RELISTOR ($110), related to payments to the University of Chicago.  

Royalty expense 

2008 

$15 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

$- 

$- 

N/A 

N/A 

We incurred $67 of royalty costs and recognized $15 of royalty expenses during the year ended December 31, 2008. As of December 
31, 2008, we recorded a cumulative total of $52 of deferred royalty costs from the royalty costs incurred in the last three quarters of 
2008. The $52 of deferred royalty costs are expected to be recognized as royalty expense over the period of our development 

32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
obligations relating to RELISTOR. 

Other operating expenses 

$7,400 

$8,875 

$19,352 

(17%) 

(54%) 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease primarily 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).  

2007 vs. 2006   Decrease primarily due to expenses in 2006 related to our purchase of a former member’s equity interest in PSMA 
LLC, which are included in in-process research and development ($13,209) and travel ($21), partially offset by an increase in rent 
($579), facilities costs ($202), insurance costs ($128), other operating expenses ($172) and increased computer software costs in 2007 
($1,672), related to the preparation for submission of a NDA in March 2007. 

General and Administrative Expenses increased to $28,834 in the year ended December 31, 2008 from $27,901 in the year 

ended December 31, 2007 and from $22,259 in the year ended December 31, 2006, as follows: 

Salaries and benefits (cash) 

$8,610 

$7,243 

$5,942 

19% 

22% 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Increase 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. 

2007 vs. 2006   Increase due to compensation increases and an increase in average headcount to 43 from 32 in the general and 
administrative departments for the years ended December 31, 2007 and 2006, respectively, including the hiring of our Vice President, 
Commercial Development and Operations in January 2007. 

Share-based compensation (non-cash) 

$6,892 

$8,202 

$6,840 

(16%) 

20% 

2008 

2007 

2006 

  2008 vs. 2007 

  2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease due to compensation awards becoming fully vested and an increase in directors and officers forfeiture rate, 
partially offset by greater employee stock purchase plan expenses and issuance of new grants. 

2007 vs. 2006   Increase due to increase in headcount and changes in the fair value of our common stock. 

See Critical Accounting Policies −Share-Based Payment Arrangements. 

Consulting and professional fees 

$7,838 

$6,481 

$4,891 

21% 

33% 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Increase due primarily to increases in consultants ($1,135), legal and patent fees ($132) and other miscellaneous costs 
($158), which were partially offset by a decrease in audit and tax fees ($68). 

2007 vs. 2006   Increase due primarily to increases in consultants ($632), legal and patent fees ($1,138) and other miscellaneous costs 
($15), which were partially offset by a decrease in audit and tax fees ($195). 

Other operating expenses 

$5,494 

$5,975 

$4,586 

(8)% 

30% 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Decrease in recruiting ($452), facilities ($142), investor relations ($74), taxes ($27) and other operating expenses 
($55), partially offset by increases in rent ($269). 

2007 vs. 2006   Increase in computer supplies and software ($219), rent ($184), recruiting ($125), travel ($69), utilities and facilities 
costs ($466), investor relations ($176) and other operating expenses ($290), partially offset by decreases in insurance ($101) and 
corporate sales and franchise taxes ($39). 

33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Loss in Joint Venture: 

Loss in Joint Venture 

$- 

$- 

2008 

2007 

2006 

$121 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

N/A 

(100%) 

2007 vs. 2006   Loss in joint venture decreased to $0 for the year ended December 31, 2007 from $121 for the year ended December 
31, 2006. On April 20, 2006, PSMA LLC became our wholly owned subsidiary and, accordingly, we did not recognize loss in joint 
venture from the date of acquisition.  

Depreciation and Amortization: 

Depreciation and amortization 

$4,609 

$3,027 

$1,535 

52% 

97% 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

2008 vs. 2007   Depreciation 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. 

2007 vs. 2006   Depreciation expense increased to $3,027 for the year ended December 31, 2007 from $1,535 for the year ended 
December 31, 2006. We purchased capital assets and made leasehold improvements in both years to increase our research and 
manufacturing capacity. During 2007, $5.8 million of machinery and equipment and leasehold improvements that had been included 
in construction in progress at December 31, 2006, representing about 28% of the December 31, 2006 balance of fixed assets, were 
placed in operation and depreciated.  

Other Income: 

Other income 

$6,235 

$7,770 

$7,701 

(20)% 

1% 

2008 

2007 

2006 

2008 vs. 2007 

2007 vs. 2006 

Percent change 

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. 

2007 vs. 2006   Interest income increased to $7,770 for the year ended December 31, 2007 from $7,701 for the year ended December 
31, 2006. 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, 2007 and 2006, investment income decreased to $7,325 from $7,710, respectively, due to a lower average 
balance of cash equivalents and marketable securities in 2007 than in 2006. Amortization of premiums, net of discounts, was $445 and 
$9 for the years ended December 31, 2007 and 2006, respectively. 

Income Taxes: 

For the years ended December 31, 2008, 2007 and 2006, we had losses both for book and tax purposes. 

Net Loss: 

Our net loss was $44,672 for the year ended December 31, 2008, $43,688 for the year ended December 31, 2007 and $21,618 

for the year ended December 31, 2006.  

34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 Collaboration with Wyeth to finance our operations. We have funded our operations since inception 
primarily through private placements of equity securities, payments received under collaboration agreements, public offerings of 
common stock, funding under government research grants and contracts, interest on investments, proceeds from the exercise of 
outstanding options and warrants and sale of our common stock under our two employee stock purchase plans (Purchase Plans). At 
December 31, 2008, we had cash, cash equivalents and marketable securities, including non-current portion, totaling $141.4 million 
compared with $170.4 million at December 31, 2007. We expect that our existing cash, cash equivalents and marketable securities at 
December 31, 2008 are sufficient to fund current operations beyond one year. Our cash flow from operating activities was negative for 
the years ended December 31, 2008, 2007 and 2006 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. 

Sources of Cash 

Operating Activities. Our Collaboration with Wyeth provided us with a $60.0 million upfront payment in December 2005. In 

addition, since January 2006, Wyeth has been reimbursing us for development expenses we incur related to RELISTOR under the 
development plan agreed to between us, which is currently expected to continue through 2009. For the years ended December 31, 
2008 and 2007, we received $24.7 million and $40.1 million, respectively, of such reimbursement. Since inception of the Wyeth 
Collaboration, Wyeth has made $39.0 million in milestone payments to us upon the achievement of certain events. In May 2007, we 
earned $9.0 million, representing two milestone payments, related to the acceptance for review of applications submitted for 
marketing approval of a subcutaneous formulation of RELISTOR for the treatment of OIC in patients receiving palliative care in the 
U.S. and the European Union. Approval of the U.S. application in April 2008 resulted in our earning a $15.0 million milestone 
payment, which was recognized in the second quarter of 2008. In July 2008, we earned $10.0 million milestone payment for the 
European approval of subcutaneous RELISTOR. Wyeth has also submitted applications for the marketing of RELISTOR in Canada 
and Australia, which were approved in March 2008 and November 2008, respectively. In October 2006, we earned a $5.0 million 
milestone payment in connection with the start of a phase 3 clinical trial of intravenous RELISTOR for the treatment of POI. Wyeth is 
obligated to make up to $295 million in additional payments to us upon the achievement of milestones and other contingent events in 
the development and commercialization of RELISTOR. Wyeth is also responsible for all commercialization activities related to 
RELISTOR products, other than that to be conducted by Ono. We are entitled to receive royalty payments from Wyeth as the product 
is sold in the various countries (other than Japan) where marketing approval has been obtained. We are also entitled to receive royalty 
payments upon the sale of all other products developed under the Wyeth Collaboration Agreement. 

Under our License Agreement with Ono, we received from Ono an upfront payment of $15.0 million, and are entitled to 

receive potential development milestone payments 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. As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we have recorded $15.0 
million as deferred revenue – current, which we expect to recognize as revenue during the first quarter of 2009, upon satisfaction of 
our performance obligations. 

The funding by Wyeth and Ono of development costs for RELISTOR generally enhances our ability to devote current and 

future resources to other research and development programs. We may also enter into other collaboration agreements, license or sale 
transactions or royalty sales or financings with respect to our products and product candidates. 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. 

In 2003, we were awarded a contract by the NIH to develop a prophylactic vaccine 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 are being used principally in connection with our ProVax HIV vaccine program. 
The NIH Contract originally provided for up to $28.6 million in funding to us, subject to annual funding approvals and compliance 
with its terms, over five years. The total of our approved award under the NIH Contract through December 2008 is $15.5 million. 
Funding under this contract includes the payment of an aggregate of $1.6 million in fees, subject to achievement of specified 
milestones. Through December 31, 2008, we had recognized revenue of $15.5 million from this contract, including $0.2 million for 
the achievement of two milestones. We were informed by the NIH that it has decided to fund this contract only through December 
2008. We have applied for continued funding for this program and are funding it with our own resources pending a decision on that 
application. 

A substantial portion of our revenues to date has been derived from federal government grants and research contracts. During 

35 

 
 
 
 
 
 
 
 
 
 
 
 
 
the years ended December 31, 2006, 2007 and 2008, we generated revenues from awards made to us by the NIH between 2003 and 
2008, to partially fund some of our programs. For the years ended December 31, 2008, 2007 and 2006, we recognized $5.3 million, 
$6.2 million and $8.1 million, respectively, of revenue from all of our NIH grants. 

Changes in Accounts receivable and Accounts payable for the years ended December 31, 2008, 2007 and 2006 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 are guaranteed by the U.S. Treasury or Federal Deposit Insurance 

Corporation’s guarantee programs. Our marketable securities, which include corporate debt securities, securities of government-
sponsored entities and auction rate securities, are classified as available for sale and are predominantly not guaranteed. These 
investments, while rated investment grade by the Standard & Poor’s and Moody’s rating agencies and predominantly having 
scheduled maturities in the first three quarters of 2009, are heavily concentrated in the U.S. financial sector, which continues to be 
under extreme stress. 

As a result of recent changes in general market conditions, 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 February 2008, auctions failed for certain of our auction rate securities because sell orders exceeded buy 
orders. As a result, at December 31, 2008, we continue to hold approximately $4.1 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. 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 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 have a history of holding all marketable securities to maturity. We, 
therefore, consider that we have the intent and ability to hold any securities with unrealized losses until a recovery of fair value (which 
may be maturity), and we do not consider these marketable securities to be other than temporarily impaired at December 31, 2008. 

Financing Activities. During the years ended December 31, 2008, 2007 and 2006, we received cash of $6.5 million, $7.8 

million and $7.1 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 the past year, we obtained approvals from the FDA, as well as European Union, Canadian, Australian, Venezuelan and 

other regulatory authorities, for our first commercial product, RELISTOR. We continue development and clinical trials with respect to 
RELISTOR and our other product candidates. 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 our technologies in addition to that for 
RELISTOR, we will be required to fund our operations for periods in the future, by seeking additional financing through future 

36 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
offerings of equity or debt securities or funding from additional 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 would 
seriously jeopardize the future success of our business.  

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 investigating supportive care, virology and oncology, and are conducting 
several smaller research projects in the areas of virology and oncology. Our total expenses for research and development from 
inception through December 31, 2008 have been approximately $478.5 million. For various reasons, many of which are outside of our 
control, including the early stage of certain of our programs, the timing and results of our clinical trials and our dependence in certain 
instances on third parties, we cannot estimate the total remaining costs to be incurred and timing to complete our research and 
development programs. Under our Collaboration with Wyeth, we are able to estimate that those remaining costs for the subcutaneous 
and intravenous formulations of RELISTOR, based upon the development plan and budget approved by us and Wyeth, which may be 
subject to further revision, are $15.8 million, over the period from January 1, 2009 to December 31, 2009. 

For the years ended December 31, 2008, 2007 and 2006, research and development costs incurred, by project, were as 

follows. Expenses for Cancer for 2006 include $13.2 million related to our purchase of a former member’s interest in the PSMA joint 
venture, (see Business – Oncology – Prostate Cancer – PSMA, above for more details): 

RELISTOR 
HIV 
Cancer 
Other programs 

Total 

2008 

For the Year Ended December 31, 
2007 
(in millions) 

2006 

       $   25.4 
39.4 
10.8 
9.5 
       $   85.1 

     $   41.5 
29.0 
16.1 
9.6 
       $   96.2 

    $   32.1 
15.8 
23.2 
4.2 
    $   75.3 

We may 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. Manufacturing 
and commercialization expenses for RELISTOR are funded by Wyeth in the U.S. and outside the U.S. except for Japan, where 
development, manufacturing and commercialization expenses are required to be funded by Ono. However, if we exercise our option to 
co-promote RELISTOR products in the U.S., which must be approved by Wyeth, we will be required to establish and fund a sales 
force, which we currently do not have. If we commercialize any other product candidate other than with a collaborator, we would also 
require additional funding to establish manufacturing and marketing capabilities. 

Our purchase of rights from our methylnaltrexone licensors in December 2005 has extinguished our cash payments that 

would have been due to those licensors in the future upon the achievement of certain events, including sales of RELISTOR products. 
We continue, however, to be responsible to make payments (including royalties) to the University of Chicago upon the occurrence of 
certain events. 

Costs incurred by PSMA LLC from January 1, 2006 to April 20, 2006 were funded from PSMA LLC’s cash reserves. We are 

continuing to conduct the PSMA research and development projects on our own subsequent to our acquisition of PSMA LLC, on April 
20, 2006, and are required to fund the entire amount of such efforts, thus, increasing our cash expenditures. We are funding PSMA-
related research and development efforts from our internally-generated cash flows. We are also continuing to receive funding from the 
NIH for a portion of our PSMA-related research and development costs. 

Investing Activities. During the years ended December 31, 2008, 2007 and 2006, we have spent $2.2 million, $5.2 million 

and $8.8 million, respectively, on capital expenditures. Those expenditures have been related to the expansion of our office, laboratory 
and manufacturing facilities and the purchase of more laboratory equipment for our ongoing and future research and development 
projects, including the purchase of a second 150-liter bioreactor in February 2007 for the manufacture of research and clinical 
products.  

37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2008 for 
future payments under these agreements: 

Operating leases 
License and collaboration agreements (1) 

Total 
_______________ 

Total 

2009 

$       5.0 
   82.5 
$     87.5 

$     3.2   
      2.1 
$     5.3 

Payments due by December 31, 
2010-2011 

2012-2013 

  Thereafter 

(in millions) 

  $       1.0 
       4.8 
  $       5.8 

  $        0.6 
       12.7 
  $      13.3 

  $         0.2 
     62.9 
  $       63.1 

(1)  Assumes attainment of milestones covered under each agreement, including those by PSMA LLC. 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 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, 
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 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, 2008. 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. 

38 

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

Bulletin (SAB) No. 104 (SAB 104), Emerging Issues Task Force (EITF) Issue No. 00-21 (EITF 00-21) “Accounting for Revenue 
Arrangements with Multiple Deliverables” and EITF Issue No. 99-19 (EITF 99-19) “Reporting Revenue Gross as a Principal Versus 
Net as an Agent.” Our license and co-development agreement with Wyeth includes 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 began 
recognizing research revenue from Wyeth on January 1, 2006. During the years ended December 31, 2008, 2007 and 2006, we also 
recognized revenue from government research grants and contract, which are used to subsidize a portion of certain of our research 
projects (Projects), exclusively from the NIH. We also recognized revenue from the sale of research reagents during those periods.  

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 under the license agreement. 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 EITF 00-21. 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, 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. 

We must determine the period over which our performance obligations will be performed and revenue related to upfront 

license payments will be recognized. Revenue will be 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. We are recognizing revenue related 
to the upfront license payment we received from Wyeth using the proportionate performance method since we can reasonably estimate 
the level of effort required to complete our performance obligations under the Wyeth Collaboration based upon the most current 
budget approved by both Wyeth and us. Such performance obligations are provided by us on a best-efforts basis. Full-time equivalents 
are being used as the measure of performance. Significant judgment is 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. Since we have no obligation to develop the subcutaneous and intravenous formulations of 
RELISTOR outside the U.S. or the oral formulation at all and have no significant commercialization obligations for any product, 
recognition of revenue for the upfront payment is not required during those periods, if they extend beyond the period of our development 
obligations. 

During the course of a collaboration agreement, e.g., the Wyeth Collaboration, that involves a development plan and budget, 

the amount of the upfront license payment that is recognized as revenue in any period will increase or decrease as the percentage of 
actual effort increases or decreases, as described above. When a new budget is approved, the remaining unrecognized amount of the 
upfront license fee will be recognized prospectively, using the methodology described above and applying any changes in the total 
estimated effort or period of development that is specified in the revised approved budget. The amounts of the upfront license payment 
that we recognized as revenue for each fiscal quarter prior to the third quarter of 2007 were based upon several revised approved 
budgets, although the revisions to those budgets did not materially affect the amounts 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 will extend, and over which the upfront payment will be amortized, was extended from the end of 2008 to the end of 2009. 
Consequently, the amount of revenue recognized from the upfront payment in the year ended December 31, 2008 declined relative to 
that in the comparable period of 2007. Due to the significant judgments involved in determining the level of effort required under an 
arrangement and the period over which we expect to complete our performance obligations under the arrangement, further changes in 
any of those judgments are reasonably likely to occur in the future which could have a material impact on our revenue recognition. If a 
collaborator terminates an agreement in accordance with the terms of the agreement, we would recognize any unamortized remainder 
of an upfront payment at the time of the termination.  

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 

39 

 
 
 
 
 
 
 
 
 
 
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. In relation to the Wyeth Collaboration, we have assessed the nature of our involvement with 
the JSC, JDC and JCC. Our involvement in the first two such committees is one of several obligations to develop the subcutaneous 
and intravenous formulations of RELISTOR through regulatory approval in the U.S. We have combined the committee obligations 
with the other development obligations and are accounting for these obligations during the development phase as a single unit of 
accounting. After the development period, however, we have assessed the nature of our involvement with the committees to be a right, 
rather than an obligation. Our assessment is based upon the fact we negotiated to be on these committees as an accommodation for our 
granting of the license for RELISTOR to Wyeth. Further, Wyeth has been granted by us an exclusive license (even as to us) to the 
technology and know-how regarding RELISTOR and has been assigned the agreements for the manufacture of RELISTOR by third 
parties. Following regulatory approval of the subcutaneous and intravenous formulations of RELISTOR, Wyeth is required to continue 
to develop the oral formulation and to commercialize all formulations as provided in the Wyeth Collaboration, for which it is capable 
and responsible. During those periods, the activities of these committees will be focused on Wyeth’s development and 
commercialization obligations. As discussed in Overview – Supportive Care, Wyeth returned the rights to RELISTOR with respect to 
Japan to us in connection with its election not to develop RELISTOR there and the transaction with Ono. As a result, Wyeth is now 
responsible for the development of the oral formulation worldwide excluding Japan and the intravenous and subcutaneous 
formulations outside the U.S., other than Japan. 

Collaborations may also contain substantive milestone payments. 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 (Substantive Milestone Method). During October 2006, May 2007, April 2008 and July 2008, we earned $5.0 million, $9.0 
million, $15.0 million and $10.0 million, respectively, upon achievement of non-refundable milestones anticipated in the Wyeth 
Collaboration; the first in connection with the commencement of a phase 3 clinical trial of the intravenous formulation of RELISTOR, 
the second in connection with 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 third for the FDA approval of subcutaneous RELISTOR and 
the fourth 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 ten, 17, 28 and 31 months, respectively, from inception of the Collaboration to the achievement of those milestones. 
Therefore, we recognized the milestone payments as revenue in the respective periods in which the milestones were earned. 

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 considered part of the consideration and be recognized as revenue as such performance obligations are performed 
under either the proportionate performance or straight-line methods, as applicable, and in accordance with the policies described 
above. 

We will 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. 

Reimbursement of costs is recognized as revenue provided the provisions of EITF 99-19 are met, the amounts are 

determinable and collection of the related receivable is reasonably assured. 

Royalty revenue is recognized based upon net sales of related licensed products, as reported to us by Wyeth. 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, and in accordance with the policies described above.  

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 

40 

 
 
 
 
 
 
 
 
 
 
 
 
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 for the Wyeth Collaboration for our total effort required to complete our performance 
obligations under that arrangement. That estimate may change in the future and such changes to estimates would be accounted for 
prospectively and would result in a change in the amount of revenue recognized in future periods. 

In October 2008, we entered into an exclusive license agreement with Ono under which we licensed to Ono the rights to 

subcutaneous RELISTOR in Japan and under that agreement, in November 2008, we received from Ono an upfront payment of $15.0 
million. As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we have recorded $15.0 million as 
deferred revenue – current, which we expect to recognize as revenue during the first quarter of 2009, upon satisfaction of our 
performance obligations. 

Ono is responsible for developing and commercializing subcutaneous RELISTOR in Japan, including conducting the clinical 

development necessary to support regulatory marketing approval. Ono is to own the subcutaneous filings and approvals relating to 
RELISTOR in Japan. We are also entitled to receive up to an additional $20.0 million, payable upon achievement of 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. Supervision of and consultation with respect 
to Ono’s development and commercialization responsibilities will be carried out by joint committees consisting of members from both 
Ono and us. Ono may request us to perform activities related to its development and commercialization responsibilities beyond our 
participation in these 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. 

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. 
Substantive at-risk milestone payments are uncommon in these arrangements, but would be recognized as revenue on the same basis 
as the Substantive Milestone Method. 

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 Statement of Financial Accounting 
Standards No. 123 (revised 2004) (FAS 123(R)) “Share-Based Payment.” We account for share-based compensation to non-
employees, including non-qualified stock options and restricted stock, in accordance with EITF Issue No. 96-18 “Accounting for 
Equity Instruments that are Issued to Other Than Employees for Acquiring, or in Connection with Selling, Goods or Services.” 

We adopted FAS 123(R) using the modified prospective application, under which compensation cost for all share-based 

awards that were unvested as of January 1, 2006, the adoption date, and those newly granted or modified after the adoption date will 
be recognized in our financial statements over the related requisite service periods; usually the vesting periods for awards with a 
service condition. Compensation cost is based on the grant-date fair value of awards that are expected to vest. As of December 31, 
2008, there was $15.1 million, $8.7 million and $0.07 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 2.6 years, 1.9 years and 0.04 years, respectively. 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. 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.  

Under FAS 123(R), 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 of stock price on the date of grant, exercise price, volatility, expected 
term, dividend rate and risk-free interest rate. For this purpose: 

•    We use the closing price of our common stock on the date of grant, as quoted on The NASDAQ Stock Market LLC, as 

the exercise price.  

•    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 

41 

 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2008 , 2007 and 2006, the 
volatility of our common stock has been high, 66%-91%, 50%-89% and 69%-94% , respectively, which is common for 
entities in the biotechnology industry that do not have commercial products. A higher volatility input to the Black-Scholes 
model increases the resulting compensation expense.  

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

For the years ended December 31, 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 5.33 and 7.30 years and 5.25 and 7.5 years, 
respectively. Beginning in the third quarter of 2008, we estimated the expected term of stock options granted to our Chief 
Executive Officer to be 7.5 years. Expected term for options granted to non-employee consultants was ten years, which is 
the contractual term of those options. For the July 1, 2008 award, the Compensation Committee of the Board of Directors 
modified the form of the grant used for stock incentive awards to provide for vesting of stock incentive awards granted on 
that date ratably over a three-year period and for acceleration of the vesting of such awards and all previously granted and 
outstanding awards for any employee in the event that, following a Change in Control, such employee’s employment is 
Terminated without Cause (as such terms are defined in our 2005 Stock Incentive Plan). For the year ended December 31, 
2006, our expected term was calculated based upon the simplified method as detailed in SAB No. 107. Accordingly, we 
used an expected term of 6.5 years based upon the vesting period of the outstanding options of four or five years and a 
contractual term of ten years. A shorter expected term would result in a lower compensation expense. 

•    Since we have never paid dividends and do not expect to pay dividends in the future, 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. 

A portion of the options granted to our Chief Executive Officer on July 1, 2002, 2003, 2004 and 2005, on July 3, 2006 and on 

July 2, 2007 cliff vests 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 FAS 123(R), 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, we granted 
options and restricted stock 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 
while the restricted stock awards do not include an exercise price. 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.  

The fair value of shares purchased under the Purchase Plans is estimated on the date of grant in accordance with Financial 

Accounting Standards Board (FASB) Technical Bulletin No. 97-1 “Accounting under Statement 123 for Certain Employee Stock 
Purchase Plans with a Look-Back Option.” The same option valuation model is used for the Purchase Plans as for non-qualified stock 
options, except that the expected term for the Purchase Plans is six months and the historical volatility is calculated over the six month 
expected term. 

In applying the treasury stock method for the calculation of diluted earnings per share (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 
earnings per share calculation unless they are anti-dilutive. We incurred net losses for the years ended December 31, 2006, 2007 and 
2008, and, therefore, such amounts have not been included for those periods in the calculation of diluted EPS since they would be 
anti-dilutive. Accordingly, basic and diluted EPS are the same for those periods. We have made an accounting policy decision to 
calculate windfall tax benefits/shortfalls for purposes of diluted EPS calculations, excluding the impact of pro forma deferred tax 
assets. This policy decision will apply when we have net income. 

For the years ended December 31, 2006, 2007 and 2008, no tax benefit was recognized related to total compensation cost for 

share-based payment arrangements recognized in operations because we had a net loss for the period and the related deferred tax 

42 

 
 
 
 
 
 
 
 
 
 
 
 
assets were fully offset by a 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 years ended December 31, 2006, 2007 and 2008. 

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. The Collaboration Agreement with Wyeth in which Wyeth has assumed all of the financial 
responsibility for further development, mitigates those costs. 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. 

On January 1, 2008, we adopted EITF Issue 07-3 (EITF 07-3) “Accounting for Advance Payments for Goods or Services to 

Be Used in Future Research and Development Activities.” Prior to January 1, 2008, under Statement of Financial Accounting 
Standards No. 2, “Accounting for Research and Development Costs,” non-refundable advance payments for future research and 
development activities for materials, equipment, facilities and purchased intangible assets that had no alternative future use were 
expensed as incurred. Beginning January 1, 2008, we have been capitalizing such non-refundable advance payments and expensing 
them as the goods are delivered or the related services are performed. EITF 07-3 applies to new contracts entered into after the 
effective date of January 1, 2008. The adoption of EITF 07-3 did not have a material impact on the financial position or results of 
operations. 

Fair Value Measurements. Our available-for-sale investment portfolio consists of marketable securities, which include 

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 Statement of Financial Accounting Standards No. 115, “Accounting 
for Certain Investments in Debt and Equity Securities.” The change in the fair value of these investments is recorded as a component 
of other comprehensive loss. 

We adopted Statement of Financial Accounting Standards No. 159 (FAS 159) “The Fair Value Option of Financial Assets 
and Financial Liabilities” effective January 1, 2008, which provides companies with an option to report certain financial assets and 
liabilities at fair value. Unrealized gains and losses on items for which the fair value option has been elected are reported in earnings. 
FAS 159 also establishes presentation and disclosure requirements designed to facilitate comparisons between companies that choose 
different measurement attributes for similar types of assets and liabilities. The objective of FAS 159 is to reduce both complexity in 
accounting for financial instruments and the volatility in earnings caused by measuring related assets and liabilities differently. We 
have elected not to apply the fair value option to any of our financial assets or liabilities. 

We also adopted Statement of Financial Accounting Standards No. 157 (FAS 157) “Fair Value Measurements” effective 

January 1, 2008 for financial assets and financial liabilities. FAS 157 defines fair value as the price that would be received to sell an 
asset or would be paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the 
measurement date, and establishes a framework to make the measurement of fair value more consistent and comparable. In accordance 
with FASB Staff Position (FSP) No. FAS 157-2, “Effective Date of FASB Statement No. 157,” we will defer the adoption of FAS 157 
for our nonfinancial assets and nonfinancial liabilities until January 1, 2009. We are currently evaluating the impact of FAS 157 for 
nonfinancial assets and nonfinancial liabilities, and currently do not expect the adoption of this deferral to have a material effect on 
our financial position or results of operations. The partial adoption of FAS 157 did not have a material impact on our fair value 
measurements.  

FAS 157 established a three-level hierarchy for fair value measurements that distinguishes between market participant 

assumptions developed based on market data obtained from sources independent of the reporting entity (“observable inputs”) and the 
reporting entity’s own assumptions about market participant assumptions developed based on 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. 

43 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
•    Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement, and 
involve management judgment. 

Impact of Recently Issued Accounting Standards 

In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161 (FAS 161) “Disclosures about 

Derivative Instruments and Hedging Activities – an amendment to FASB Statement No. 133,” which is intended to improve financial 
standards for derivative instruments and hedging activities by requiring enhanced disclosures. The enhanced disclosure conveys the 
purpose of derivative use to enable investors a better understanding of their effects on an entity's financial position, financial 
performance, and cash flows. Entities are required to provide enhanced disclosures about (i) how and why an entity uses derivative 
instruments, (ii) how derivative instruments and related hedged items are accounted for under Statement 133 and its related 
interpretations, and (iii) how derivative instruments and related hedged items affect an entity’s financial position, financial 
performance, and cash flows. It is effective for financial statements issued for fiscal years beginning after November 15, 2008, with 
early adoption encouraged. We do not expect the effect of the adoption of FAS 161 to have a material effect on our financial position 
or results of operations. 

In October 2008, the FASB issued FSP No. FAS 157-3 (FSP FAS 157-3) “Determining the Fair Value of a Financial Asset 
When the Market for That Asset Is Not Active.” FSP FAS 157-3 clarifies the application of SFAS 157 in a market that is not active 
and illustrates how an entity should determine fair value when the market for a financial asset is not active. FSP FAS 157-3 provides 
guidance on how an entity’s own assumptions about cash flows and discount rates should be considered when measuring fair value 
when relevant market data do not exist, how observable market information in an inactive or dislocated market affects fair value 
measurements and how the use of broker and pricing service quotes should be considered when applying fair value measurements. 
FSP FAS 157-3 is effective immediately as of September 30, 2008 and for all interim and annual periods thereafter. The adoption of 
FSP FAS 157-3 did not have a material effect on our financial position or results of operations. 

In June 2008, the FASB issued FSP EITF Issue No. 03-6-1 (FSP EITF 03-6-1) “Determining Whether Instruments Granted in 

Share-Based Payment Transactions Are Participating Securities.” FSP EITF 03-6-1 requires entities 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 described in Statement of Financial 
Accounting Standards No. 128, “Earnings Per Share.” FSP EITF 03-6-1 is effective January 1, 2009 and requires retrospective 
application. We are currently evaluating the impact this FSP 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 taxable corporate debt securities, securities of government-sponsored entities and auction rate securities. 
Our investments totaled $129.0 million at December 31, 2008. Approximately $81.1 million of these investments had fixed interest 
rates, and $47.9 million had interest rates that were variable. Our marketable securities are classified as available-for-sale. 

Due to the conservative nature of our short-term fixed-interest-rate investments, we do not believe that we have a material 

exposure to interest-rate risk. Our fixed-interest-rate long-term investments are sensitive to changes in interest rates. Interest rate 
changes would result in a change in the fair values of these investments due to differences between the market interest rate and the rate 
at the date of purchase of the investment. A 100 basis point increase in the December 31, 2008 market interest rates would result in a 
decrease of approximately $0.03 million in the market values of these investments. 

As a result of recent changes in general market conditions, 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 February 2008, auctions failed for certain of our auction rate securities because sell orders exceeded buy 
orders. As a result, at December 31, 2008, we continue to hold approximately $4.1 million (3% of assets measured at fair value) of 
auction rate securities, in respect of which we have received all scheduled interest payments, which, in the event of auction failure, are 
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 its impact, if any, on the fair market value of our 

investments. If the auction rate securities market conditions do not recover, we may be required to record additional losses in 2009, 
which may affect our financial condition, cash flows and net loss. 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 

44 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
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. As a result of the estimated fair value, 
we have determined a temporary impairment in the valuation of these securities of $0.3 million for the year ended December 31, 2008. 
A 100 basis point increase to our internal analysis would result in an increase of approximately $0.042 million in the temporary 
impairment of these securities as of the year ended December 31, 2008. 

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. 

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, 2008 that have materially affected, or are reasonably 
likely to materially affect, our internal control over financial reporting. 

Management’s Report on Internal Control Over Financial Reporting 

Internal control over financial reporting is defined in Rules 13a-15(f) and 15d-15(f) promulgated under the Exchange Act as 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, and includes those 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. 

45 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2008. The effectiveness of our internal control over financial reporting as of December 31, 2008 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. 

46 

 
 
 
 
 
 
 
 
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 2009 Annual Meeting of Stockholders to be filed with the 
SEC: 

Item of Form 10-K 

Location in 2009 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. 

47 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2007 and 2008 

Consolidated Statements of Operations for the years ended December 31, 2006, 2007 and 2008 

Consolidated Statements of Stockholders’ Equity and Comprehensive Loss for the years ended December 31, 2006, 
2007 and 2008 

Consolidated Statements of Cash Flows for the years ended December 31, 2006, 2007 and 2008 

Notes to Consolidated Financial Statements 

b) 

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. 

48 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Report of Independent Registered Public Accounting Firm 
Financial Statements: 

Consolidated Balance Sheets at December 31, 2007 and 2008 
Consolidated Statements of Operations for the years ended December 31, 2006, 2007 and 2008 
Consolidated Statements of Stockholders’ Equity and Comprehensive Loss 
  for the years ended December 31, 2006, 2007 and 2008 
Consolidated Statements of Cash Flows for the years ended December 31, 2006, 2007 and 2008 

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, 2008 
and 2007, and the results of their operations and their cash flows for each of the three years in the period ended 
December 31, 2008 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, 2008, 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 and Note 3 to the consolidated financial statements, the Company changed the manner in which 
it accounts for share-based compensation in 2006, 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 9, 2009 

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 
Restricted cash 

Total assets 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Current liabilities: 

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

Total current liabilities 
Deferred revenue — long term 
Other liabilities 

Total liabilities 

Commitments and contingencies (Note 11) 
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 — 

29,753,820 in 2007 and 30,807,387 in 2008 

Additional paid-in capital 
Accumulated deficit 
Accumulated other comprehensive income (loss) 
Treasury stock, at cost (zero shares in 2007 and 200,000 shares in 2008) 

Total stockholders’ equity 
Total liabilities and stockholders’ equity 

December 31, 

2007 

2008 

10,423
120,000
1,995
3,111
135,529
39,947
13,511
552
189,539

14,765 
17,728
57
32,550
9,131
359
42,040

39
401,500
(254,046) 
6 
- 
147,499
189,539

$ 

$ 

$ 

$ 

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 from collaborator 
Royalty income 
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 
Loss in joint venture 
Royalty expense 
Depreciation and amortization 

Total expenses 

Operating loss 

Other income: 

Interest income 

Total other income 

Net loss 

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

Years Ended December 31, 
2007 

2008 

2006 

$ 

58,415 
-  
11,418  
73  
69,906  

$ 

65,455 
-  
10,075  
116  
75,646  

61,711  
13,209 
390  
22,259  
121 
-  
1,535  
99,225  

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

59,885 
146  
7,460  
180  
67,671  

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

(29,319) 

(51,458) 

(50,907) 

7,701  
7,701  

7,770  
7,770  

6,235  
6,235  

(21,618)  $ 

(43,688)  $ 

(44,672) 

(0.84)  $ 

25,669  

(1.60)  $ 

27,378  

(1.51) 
29,654  

$ 

$ 

$ 

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, 2006, 2007 and 2008 
(in thousands)  

Common Stock 

Shares 
25,229 

Amount 
$      33 

Additional 
Paid-In 
Capital 
$  306,085 

Unearned 
Compensation 
$      (4,498)  $    (188,740) 

Accumulated 
Deficit 

Accumulated 
Other 
Comprehensive 
(Loss) Income 
     $       (148) 

Treasury Stock 

Shares 
- 

Amount 
$         - 

Total 
$112,732 

Balance at December 31,  2005 

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 
Issuance of compensatory stock 
options to non-employees 
Elimination of unearned 
compensation upon adoption of FAS 
123(R)  

- 

- 

- 

228 

742 

- 

- 

- 

- 

- 

- 

1 

- 

- 

- 

- 

12,034 

- 

7,074 

620 

- 

- 

- 

- 

- 

- 

(4,498) 

4,498 

 (21,618) 

- 

- 

- 

- 

- 

- 

- 

              3 

- 

- 

- 

- 

- 

Balance at December 31, 2006 

26,199 

34 

 321,315

 -

    (210,358) 

          (145) 

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 8) 
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) 

- 

- 

- 

- 

- 

- 
- 

 (43,688) 

- 

- 

- 

- 

- 
- 

Balance at December 31, 2007 

29,754 

      39 

     401,500

-

     (254,046) 

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 
Treasury shares acquired under 
repurchase program 

- 

- 

- 

216 

837 

- 

- 

- 

- 

- 

1 

- 

- 

- 

14,133 

- 

6,452 

- 

- 

- 

- 

- 

- 

- 

 (44,672) 

- 

- 

- 

- 

- 

- 

151 

- 

- 

- 

- 
- 

6 

- 

(1,303) 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 
- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 
- 

- 

- 

- 

- 

- 

- 

(21,618) 

           3 
(21,615) 

12,034 

- 

7,075 

620 

- 

   110,846 

(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) 

Balance at December 31, 2008 

30,807 

$    40  $     422,085

$                  -  $    (298,718) 

$        (1,297) 

(200) 

$(2,741) 

$ 119,369 

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 
Expense of purchased technology  
Loss in joint venture 
Changes in assets and liabilities: 

Decrease (increase) in accounts receivable 
(Increase) decrease in other current assets  
Increase (decrease) in accounts payable and accrued expenses 
Decrease in due to joint venture 
Decrease in investment in joint venture 
(Decrease) increase in deferred revenue 
(Decrease) increase in other current liabilities 
Increase (decrease) 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 
Acquisition of PSMA LLC, net of cash acquired  
(Increase) decrease in restricted cash 

Net cash (used in) provided by 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 

Years Ended December 31, 
2007 

2008 

2006 

$

(21,618)  $

(43,688) 

$

(44,672) 

1,535 
2 

9 
12,654 
13,209 
121 

1,588 
(620)   
1,533 
(194)   
250 
(16,910)   
(790)   
74 
(9,157)   

(8,768)   

267,934 
(299,075)   
(13,128)   
(6)   
(53,049)   

- 
- 
- 

7,075 
- 
7,075 
(55,125)   
67,072 
11,947 

$

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 

$

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) 

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

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

   $

Supplemental disclosure of noncash investing activity: 

Fair value of assets, including purchased technology, acquired from 

PSMA LLC  

Cash paid for acquisition of PSMA LLC 
Liabilities assumed from PSMA LLC 

$ 

$

13,674 
(13,459)   
215 

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, virology and 
oncology.  

Progenics commenced principal operations in 1988 and in 2006 acquired full ownership of PSMA Development 
Company LLC (“PSMA LLC”) (see Note 12). Certain of our intellectual property rights are held by wholly owned subsidiaries. 
None of our subsidiaries other than PSMA LLC had operations during the years ended December 31, 2006, 2007 or 2008. 
Currently, all of our operations are conducted at our facilities in Tarrytown, New York. Our chief operating decision maker 
reviews financial analyses and forecasts relating to all of our research programs as a single unit and allocates resources and 
assesses performance of such programs as a whole. We operate under a single research and development segment. 

Supportive Care 

Our first commercial product, RELISTOR® (methylnaltrexone bromide), was approved by the U.S. Food and Drug 
Administration (“FDA”) for sale in the United States in April 2008. Our collaboration partner, Wyeth Pharmaceuticals (“Wyeth”), 
commenced sales of RELISTOR subcutaneous injection in June, and we have begun earning royalties on world-wide sales. 
Regulatory approvals have also been obtained in Canada, the European Union, Australia and Venezuela, and marketing 
applications have been approved or are pending or scheduled in other countries. In October, we out-licensed to Ono 
Pharmaceutical Co., Ltd., Osaka, Japan, the rights to subcutaneous RELISTOR in Japan. We continue development and clinical 
trials with respect to other indications for RELISTOR. 

Development and commercialization of RELISTOR is being conducted under a license and co-development agreement 
(“Wyeth Collaboration Agreement”) between us and Wyeth (see Note 9). Under that agreement, we (i) have received an upfront 
payment from Wyeth, (ii) have received and are entitled to receive additional payments as certain developmental milestones for 
RELISTOR are achieved, (iii) have been and are entitled to be reimbursed by Wyeth for expenses we incur in connection with the 
development of RELISTOR under an agreed-upon development plan and budget, and (iv) have received and are entitled to receive 
royalties and commercialization milestone payments. Manufacturing and commercialization expenses for RELISTOR are funded 
by Wyeth.  

In October 2006, we earned a $5.0 million milestone payment in connection with the start of a phase 3 clinical trial of 

intravenous RELISTOR for the treatment of post-operative ileus (“POI”). In May 2007, we earned $9.0 million, representing two 
milestone payments, under the Wyeth Collaboration Agreement for having made filings seeking marketing approval for 
RELISTOR subcutaneous injection in the U.S. and Europe. In April 2008, we earned a $15.0 million milestone payment from 
Wyeth for the FDA approval of subcutaneous RELISTOR, and in July 2008, we earned a $10.0 million milestone payment from 
Wyeth for European approval of subcutaneous RELISTOR. 

We and Wyeth are also developing intravenous and oral formulations of RELISTOR. 

Wyeth has elected, as it was entitled to do under our Collaboration, not to develop RELISTOR in Japan, and as provided 

in that Agreement returned to us the rights to RELISTOR in Japan. In October 2008, we entered into an exclusive License 
Agreement with Ono Pharmaceutical Co., Ltd. (“Ono”), Osaka, Japan under which we licensed to Ono the rights to subcutaneous 
RELISTOR in Japan which we reacquired from Wyeth as a result of its election. Under that agreement, in November 2008, we 
received from Ono an upfront payment of $15.0 million, and are entitled to receive potential development milestones 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) 

As a result of the return of the Japanese rights, we will not receive from Wyeth, milestone payments related to the 

development of RELISTOR formulations in Japan. These potential future milestone payments would have totaled $22.5 million 
(of which $7.5 million related to the subcutaneous formulation of RELISTOR and the remainder to the intravenous and oral 
formulations). Taking these adjustments into account, we now have the potential to receive a total of $334.0 million in 
development and commercialization milestone payments from Wyeth under the Wyeth Collaboration Agreement (of which $60.0 
million relate to the intravenous formulation of RELISTOR), and of which $39.0 million ($5.0 million relating to the intravenous 
formulation) have been paid to date. 

The payments described above will depend on continued success in development and commercialization of RELISTOR, 
which are in turn dependent on the actions of Wyeth, Ono, the FDA and other regulatory bodies, as well as the outcome of clinical 
and other testing of RELISTOR. Many of these matters are outside our control.  

Virology 

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

treatment of human immunodeficiency virus (“HIV”), the virus that causes acquired immunodeficiency syndrome (“AIDS”), and a 
proprietary orally-available small-molecule drug candidate, designated PRO 206, for treatment of hepatitis C virus infection 
(“HCV”). We have recently selected for further clinical development the subcutaneous form of PRO 140 for treatment of HIV 
infection, which has the potential for convenient, weekly self-administration, and we are conducting preclinical development 
activities in preparation for filing an Investigational New Drug (“IND”) application for PRO 206. We are also engaged in research 
regarding prophylactic vaccines against HIV infection.  

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 LLC. 

Our virology and oncology 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. Wyeth’s agreement to 
reimburse us for RELISTOR development expenses enables us to devote current and future resources to other research and 
development programs.  

Corporate-Related Matters 

We may require additional funding to continue our operations. As a result, we may enter into a collaboration agreement, 
license or sale transaction or royalty sales or financings with respect to our products and product candidates. We may also seek to 
raise additional capital through the sale of our common stock or other securities and expect to fund certain aspects of our 
operations through government grants and contracts. 

We have had recurring losses since our inception. At December 31, 2008, we had an accumulated deficit of $298.7 
million and had cash, cash equivalents and marketable securities, including non-current portion, totaling $141.4 million. We 
expect that cash, cash equivalents and marketable securities at December 31, 2008 will be sufficient to fund current operations 
beyond one year. During the year ended December 31, 2008, we had a net loss of $44.7 million and used cash in operating 
activities of $28.3 million.  

In April, 2008, our Board of Directors approved a share repurchase program to acquire up to $15.0 million of our 
outstanding common shares, funding for which comes from the $15.0 million milestone payment we received from Wyeth related 
to U.S. marketing approval for RELISTOR. Purchases under the program are made at our discretion subject to market conditions 
in the open-market or otherwise, and in accordance with the regulations of the U.S. Securities and Exchange Commission (“SEC”), 
including Rule 10b-18. During the year ended December 31, 2008, we repurchased 200,000 of our outstanding common shares. 
Purchases may be discontinued at any time. Reacquired shares will be held in treasury until redeployed or retired. We have $12.3 
million remaining available for purchases under the program. 

F-8 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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

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.  

Certain amounts have been reclassified in prior years’ financial statements to conform to the current presentation. This 
includes the reclassification of certain expenses from license fees-research and development to research and development which 
had no effect on total expenses as previously reported. 

Consolidation 

The consolidated financial statements include the accounts of Progenics, as of and for the years ended December 31, 

2006, 2007 and 2008, the balance sheet accounts of PSMA LLC as of December 31, 2007 and 2008 and the statement of 
operations accounts of PSMA LLC from April 20, 2006 to December 31, 2006 and for the years ended December 31, 2007 and 
2008 (see Notes 1 and 12). Inter-company transactions have been eliminated in consolidation. 

Revenue Recognition 

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

(“SAB 104”), Emerging Issues Task Force (“EITF”) Issue No. 00-21 (“EITF 00-21”) “Accounting for Revenue Arrangements 
with Multiple Deliverables” and EITF Issue No. 99-19 (“EITF 99-19”) “Reporting Revenue Gross as a Principal Versus Net as an 
Agent.” Our license and co-development agreement with Wyeth includes 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 began 
recognizing research revenue from Wyeth on January 1, 2006. During the years ended December 31, 2008, 2007 and 2006, we 
also recognized revenue from government research grants and contract, 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.  

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 under the license agreement. 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 EITF 00-21. 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, 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. 

We must determine the period over which our performance obligations will be performed and revenue related to upfront 

license payments will be recognized. Revenue will be 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 

F-9 

 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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. We are 
recognizing revenue related to the upfront license payment we received from Wyeth using the proportionate performance method 
since we can reasonably estimate the level of effort required to complete our performance obligations under the Wyeth 
Collaboration Agreement based upon the most current budget approved by both Wyeth and us. Such performance obligations are 
provided by us on a best-efforts basis. Full-time equivalents are being used as the measure of performance. Significant judgment is 
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. Since 
we have no obligation to develop the subcutaneous and intravenous formulations of RELISTOR outside the U.S. or the oral formulation 
at all and have no significant commercialization obligations for any product, recognition of revenue for the upfront payment is not 
required during those periods, if they extend beyond the period of our development obligations. 

During the course of a collaboration agreement, e.g., the Wyeth Collaboration Agreement, that involves a development 

plan and budget, the amount of the upfront license payment that is recognized as revenue in any period will increase or decrease as 
the percentage of actual effort increases or decreases, as described above. When a new budget is approved, generally annually, the 
remaining unrecognized amount of the upfront license fee will be recognized prospectively, using the methodology described 
above and applying any changes in the total estimated effort or period of development that is specified in the revised approved 
budget. The amounts of the upfront license payment that we recognized as revenue for each fiscal quarter prior to the third quarter 
of 2007 were based upon several revised approved budgets, although the revisions to those budgets did not materially affect the 
amounts 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 will extend, and over which the upfront payment will be amortized, 
was extended from the end of 2008 to the end of 2009. Consequently, the amount of revenue recognized from the upfront payment 
in the year ended December 31, 2008 declined relative to that in the comparable period of 2007. Due to the significant judgments 
involved in determining the level of effort required under an arrangement and the period over which we expect to complete our 
performance obligations under the arrangement, further changes in any of those judgments are reasonably likely to occur in the 
future which could have a material impact on our revenue recognition. If a collaborator terminates an agreement in accordance 
with the terms of the agreement, we would recognize any unamortized remainder of an upfront payment at the time of the 
termination. 

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. In relation to the Wyeth Collaboration Agreement, we have assessed the 
nature of our involvement with the Joint Steering Committee (“JSC”), Joint Development Committee (“JDC’) and Joint 
Commercialization Committee (“JCC”). Our involvement in the first two such committees is one of several obligations to develop 
the subcutaneous and intravenous formulations of RELISTOR through regulatory approval in the U.S. We have combined the 
committee obligations with the other development obligations and are accounting for these obligations during the development 
phase as a single unit of accounting. After the development period, however, we have assessed the nature of our involvement with 
the committees to be a right, rather than an obligation. Our assessment is based upon the fact we negotiated to be on these 
committees as an accommodation for our granting of the license for RELISTOR to Wyeth. Further, Wyeth has been granted by us an 
exclusive license (even as to us) to the technology and know-how regarding RELISTOR and has been assigned the agreements for the 
manufacture of RELISTOR by third parties. Following regulatory approval of the subcutaneous and intravenous formulations of 
RELISTOR, Wyeth is obligated to continue to develop the oral formulation and to commercialize all formulations as provided in 
the Wyeth Collaboration Agreement, for which it is capable and responsible. During those periods, the activities of these 
committees will be focused on Wyeth’s development and commercialization obligations. As discussed in Note 1, Wyeth returned 
the rights to RELISTOR with respect to Japan to us in connection with its election not to develop RELISTOR there and the 
transaction with Ono. As a result, Wyeth is now responsible for the development of the oral formulation worldwide excluding 
Japan and the intravenous and subcutaneous formulations outside the U.S., other than Japan. 

F-10 

 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

Collaborations may also contain substantive milestone payments. 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 (the “Substantive Milestone Method”). During October 2006, May 2007, April 2008 and July 2008, 
we earned $5.0 million, $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 Agreement; the first in connection with the commencement 
of a phase 3 clinical trial of the intravenous formulation of RELISTOR, the second and third in connection with 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 fourth for the FDA approval of subcutaneous RELISTOR and the fifth 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 Wyeth Collaboration Agreement 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 
Collaboration and amount of effort expended or the risk associated with the achievement of these milestones; and the passage of 
ten, 17, 28 and 31 months, respectively, from inception of the Wyeth Collaboration Agreement to the achievement of those 
milestones. Therefore, we recognized the milestone payments as revenue in the respective periods in which the milestones were 
earned. 

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 considered part of the consideration and be recognized as revenue as such performance obligations are 
performed under either the proportionate performance or straight-line methods, as applicable, and in accordance with the policies 
described above. 

We will 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. 

Reimbursement of costs is recognized as revenue provided the provisions of EITF 99-19 are met, the amounts are 

determinable and collection of the related receivable is reasonably assured. 

Royalty revenue is recognized based upon net sales of related licensed products, as reported to us by Wyeth. 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, and in accordance with the policies described above.  

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 for the Wyeth Collaboration Agreement for our total effort required to complete our 
performance obligations under that arrangement. That estimate may change in the future and such changes to estimates would be 
accounted for prospectively and would result in a change in the amount of revenue recognized in future periods. 

In October 2008, we entered into an exclusive license agreement with Ono under which we licensed to Ono the rights to 

subcutaneous RELISTOR in Japan and under that agreement, in November 2008, we received from Ono an upfront payment of 
$15.0 million. As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we have recorded $15.0 million 
as deferred revenue – current, which we expect to recognize as revenue during the first quarter of 2009, upon satisfaction of our 
performance obligations. 

Ono is responsible for developing and commercializing subcutaneous RELISTOR in Japan, including conducting the 
clinical development necessary to support regulatory marketing approval. Ono is to own the subcutaneous filings and approvals 
relating to RELISTOR in Japan. We are also entitled to receive up to an additional $20.0 million, payable upon achievement of 
development milestones. Ono is also obligated to pay to us royalties and commercialization milestones on sales by Ono of 

F-11 

 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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. Supervision of and 
consultation with respect to Ono’s development and commercialization responsibilities will be carried out by joint committees 
consisting of members from both Ono and us. Ono may request us to perform activities related to its development and 
commercialization responsibilities beyond our participation in these 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. 

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. Substantive at-risk milestone payments are uncommon in these arrangements, but would be recognized as 
revenue on the same basis as the Substantive Milestone Method. 

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. 

For each clinical trial that Progenics’ conducts, certain costs, which are included in research and development expenses, 
are expensed based on the estimated period over which clinical investigators or contract research organizations provide services 
and total number of subjects in the trial including the estimated rate at which subjects enter the trial. 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 
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 Statement of Financial Accounting Standards No. 128 

(“FAS 128”) “Earnings Per Share.” Basic net loss per share is computed on the basis of net loss for the period divided by the 
weighted average number of shares of common stock outstanding during the period, which includes restricted shares only as the 
restrictions lapse. 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 and the NIH. We invest our excess cash in money market funds, corporate 

F-12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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, 2007 and 2008, we have invested approximately 
$4,249 and $43,859, respectively, in cash equivalents in the form of money market funds with two major investment companies 
and held approximately $6,174 and $12,327, respectively, in a single commercial bank. Restricted cash represents amounts held in 
escrow for security deposits and credit cards. 

Marketable Securities 

In accordance with Statement of Financial Accounting Standards No. 115 (“FAS 115”) “Accounting for Certain 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 in this category 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 quoted market prices. Interest and 
dividends on securities classified as available-for-sale are included in interest income (see Note 4). 

At December 31, 2007 and 2008, our investment in marketable securities in the current and long term assets sections of 

the consolidated balance sheets included $38.8 million and $4.1 million, respectively, of auction rate securities. Beginning in 
February 2008, auctions failed for certain of our auction rate securities because sell orders exceeded buy orders. 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. As a result of the estimated fair value, we 
have determined a temporary impairment in the valuation of these securities of $0.3 million for the year ended December 31, 2008. 
All income generated from these current investments was recorded as interest income (see Note 4). 

Fair Value Measurements 

We adopted Financial Accounting Standards Board (“FASB”) Statement of Financial Accounting Standards No. 157 

(“FAS 157”) “Fair Value Measurements” effective January 1, 2008 for financial assets and financial liabilities. FAS 157 defines 
fair value as the price that would be received to sell an asset or would be paid to transfer a liability (i.e., the “exit price”) in an 
orderly transaction between market participants at the measurement date, and establishes a framework to make the measurement of 
fair value more consistent and comparable. In accordance with FASB Staff Position (“FSP”) No. FAS 157-2, “Effective Date of 
FASB Statement No. 157” we will defer the adoption of FAS 157 for our nonfinancial assets and nonfinancial liabilities until 
January 1, 2009. We are currently evaluating the impact of FAS 157 for nonfinancial assets and nonfinancial liabilities, and 
currently do not expect the adoption of this deferral to have a material effect on our financial position or results of operations. The 
partial adoption of FAS 157 did not have a material impact on our fair value measurements. 

FAS 157 established a three-level hierarchy for fair value measurements that distinguishes between market participant 

assumptions developed based on market data obtained from sources independent of the reporting entity (“observable inputs”) and 
the reporting entity’s own assumptions about market participant assumptions developed based on 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. 

F-13 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

•    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. 

We also adopted Statement of Financial Accounting Standards No. 159 (“FAS 159”) “The Fair Value Option of Financial 

Assets and Financial Liabilities” effective January 1, 2008, which provides companies with an option to report certain financial 
assets and liabilities at fair value. Unrealized gains and losses on items for which the fair value option has been elected are 
reported in earnings. FAS 159 also establishes presentation and disclosure requirements designed to facilitate comparisons 
between companies that choose different measurement attributes for similar types of assets and liabilities. The objective of FAS 
159 is to reduce both complexity in accounting for financial instruments and the volatility in earnings caused by measuring related 
assets and liabilities differently. We have elected not to apply the fair value option to any of our financial assets or liabilities. 

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 

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 Statement of 
Financial Accounting Standards No. 144 “Accounting for the 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, 2006, 2007 or 2008. 

Income Taxes 

We account for income taxes in accordance with the provisions of Statement of Financial Accounting Standards No.109 
(“FAS 109”) “Accounting for 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 connection with the adoption of Statement of Financial Accounting Standards No. 123 (revised 2004) (“FAS 123(R)”) 

“Share-Based Payment” which is a revision of Statement of Financial Accounting Standards No. 123 (“FAS 123”) “Accounting 
for Stock Based Compensation” (see Note 3), 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).  

F-14 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

Uncertain tax positions are accounted for in accordance with FASB Interpretation No. 48 (“FIN 48”) “Accounting for 

Uncertainty in Income Taxes - an Interpretation of FASB Statement 109” which was adopted on January 1, 2007. FIN 48 
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. FIN 48 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 its FIN 48 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 FIN 48. 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 FIN 48 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 14). 

Risks and Uncertainties 

We have to date generated only modest amounts of product and royalty revenue and except for RELISTOR, we 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 the continued services of our current employees, consultants and subcontractors. In accordance with the Wyeth 
Collaboration Agreement and the Ono License, we have transferred to Wyeth and Ono the responsibility for manufacturing 
RELISTOR for clinical and commercial use in both bulk and finished form in their respective territories. Wyeth and Ono may not 
be able to fulfill its manufacturing obligations, either on its own or through third-party suppliers. For the years ended December 
31, 2006, 2007 and 2008, the primary sources of our revenues were Wyeth and research grants and contract revenues from the 
NIH. There can be no assurance that revenues from Wyeth, Ono or from research grants and contract will continue. Beginning on 
January 1, 2006, we were no longer reimbursed by PSMA LLC for our services and we did not recognize revenue from PSMA 
LLC for the quarter ended March 31, 2006. Beginning in the second quarter of 2006, PSMA LLC became our wholly owned 
subsidiary and, accordingly, we no longer recognize revenue from PSMA LLC. Substantially all of our accounts receivable at 
December 31, 2007 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 Statement of Financial Accounting Standards No. 
130, “Reporting Comprehensive Income” for the years ended December 31, 2006, 2007 and 2008 have been included in the 
Statements of Stockholders’ Equity and Comprehensive Loss. There was no income tax expense/benefit allocated to any 
component of Other Comprehensive Loss (see Note 14). 

Impact of Recently Issued Accounting Standards 

In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161 (“FAS 161”) “Disclosures about 

Derivative Instruments and Hedging Activities – an amendment to FASB Statement No. 133” which is intended to improve 
financial standards for derivative instruments and hedging activities by requiring enhanced disclosures. The enhanced disclosure 
conveys the purpose of derivative use to enable investors a better understanding of their effects on an entity’s financial position, 
financial performance, and cash flows. Entities are required to provide enhanced disclosures about (i) how and why an entity uses 
derivative instruments, (ii) how derivative instruments and related hedged items are accounted for under Statement 133 and its 
related interpretations, and (iii) how derivative instruments and related hedged items affect an entity’s financial position, financial 
performance, and cash flows. It is effective for financial statements issued for fiscal years beginning after November 15, 2008, 
with early adoption encouraged. We do not expect the effect of the adoption of FAS 161 to have a material effect on our financial 
position or results of operations. 

F-15 

 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

In October 2008, the FASB issued FSP No. FAS 157-3 (“FSP FAS 157-3”), “Determining the Fair Value of a Financial 
Asset When the Market for That Asset Is Not Active.” FSP FAS 157-3 clarifies the application of FAS 157 in a market that is not 
active and illustrates how an entity should determine fair value when the market for a financial asset is not active. FSP FAS 157-3 
provides guidance on how an entity’s own assumptions about cash flows and discount rates should be considered when measuring 
fair value when relevant market data do not exist, how observable market information in an inactive or dislocated market affects 
fair value measurements and how the use of broker and pricing service quotes should be considered when applying fair value 
measurements. FSP FAS 157-3 is effective immediately as of September 30, 2008 and for all interim and annual periods thereafter. 
The adoption of FSP FAS 157-3 did not have a material effect on our financial position or results of operations. 

In June 2008, the FASB issued FSP EITF Issue No. 03-6-1 (“FSP EITF 03-6-1”) “Determining Whether Instruments 

Granted in Share-Based Payment Transactions Are Participating Securities.” FSP EITF 03-6-1 requires entities 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 described in 
FAS 128. FSP EITF 03-6-1 is effective January 1, 2009 and requires retrospective application. We are currently evaluating the 
impact this FSP will have on our financial statements. 

3. Share-Based Payment Arrangements 

On January 1, 2006, we adopted FAS 123(R) which supersedes APB Opinion No. 25 (“APB 25”) “Accounting for Stock 

Issued to Employees,” and amends Statement of Financial Accounting Standards No. 95 “Statement of Cash Flows.” Our share-
based payment arrangements with employees include non-qualified stock options, restricted stock and shares issued under 
Employee Stock Purchase Plans, which are compensatory under FAS 123(R), as described below. We account for share-based 
payment arrangements with non-employees, including non-qualified stock options and restricted stock, in accordance with EITF 
Issue No. 96-18 “Accounting for Equity Instruments that are Issued to Other Than Employees for Acquiring, or in Connection 
with Selling, Goods or Services” which accounting is unchanged as a result of the our adoption of FAS 123(R).  

We adopted FAS 123(R) using the modified prospective application, under which compensation cost for all share-based 

awards that were unvested as of the adoption date and those newly granted or modified after the adoption date are being 
recognized over the related requisite service period, usually the vesting period 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 is recognized on a straight-line basis over the total requisite service period for the total award. 
Upon adoption of FAS 123(R), we eliminated $4,498 of unearned compensation, related to share-based awards granted prior to the 
adoption date that were unvested as of January 1, 2006, against additional paid-in capital. The cumulative effect of adjustments 
upon adoption of FAS 123(R) was not material. Compensation expense recorded on a pro forma basis for periods prior to adoption 
of FAS 123(R) is not revised and is not reflected in the financial statements of those prior periods. 

We have adopted four stock incentive plans, the 1989 Non-Qualified Stock Option Plan, the 1993 Stock Option Plan, the 

1996 Amended Stock Incentive Plan and the 2005 Stock Incentive Plan (the “Plans”). Under each of these Plans as amended, a 
maximum of 375, 750, 5,000 and 3,950 shares of common stock, respectively, are available for 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 and 1993 Plan provide 
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, 2006, 2007 and 2008, all outstanding stock options were non-
qualified options. The 1989, 1993 and 1996 Plans terminated in April 1994, December 2003 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. 

F-16 

 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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. 

Under FAS 123(R), the fair value of each option award granted under the Plans is estimated on the date of grant using the 
Black-Scholes option pricing model with the 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 method; 
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 year ended 
December 31, 2008 and 2007, 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 5.33 and 7.30 years, and 5.25 and 7.5 years, respectively. Expected term for options 
granted to non-employee consultants was ten years, which is the contractual term of those options. The expected term of options 
granted in 2006 was based upon the simplified method of calculating expected term, as detailed in SAB No. 107 and represents the 
period of time that options granted are expected to be outstanding. Accordingly, we used an expected term of 6.5 years based upon 
the vesting period of the outstanding options of four or five years and a contractual term of ten years. 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 option is based on the U.S. Treasury yield curve in effect at the time of grant. 

Expected volatility 
Expected dividends 
Expected term (years) 
Weighted average expected term (years) 
Risk-free rate 

2006 

69% - 94% 
zero 
6.5 
6.5 
4.56% - 5.06% 

For the Years Ended 
December 31, 
2007 

50% - 89% 
zero 
5.25 - 10 
6.90 
3.88% - 4.93% 

2008 

66% - 91% 
zero 
5.33 - 10 
6.78 

  1.69% - 3.79% 

A summary of option activity under the Plans as of December 31, 2008 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, 2008 
Granted 
Exercised 
Forfeited or expired 
Outstanding at December 31, 2008 
Exercisable at December 31, 2008 

4,708 
599 
(172) 
(684) 
4,451 
3,247 

 $18.14 
16.01 
7.25 
14.86 
$18.78 
$18.06 

5.81 
4.88 

$1,104 
$1,101 

The weighted average grant-date fair value of options granted under the Plans during the years ended December 31, 2006, 

2007 and 2008 was $19.32, $16.18 and $10.09, respectively. The total intrinsic value of options exercised during the years ended 
December 31, 2006, 2007 and 2008 was $6,591, $3,766 and $969, 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 dates. The July 1, 2002, 2003 and 2005 awards were 

F-17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

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. Upon adoption of FAS 123(R) on January 1, 2006, 21, zero, 8 and 36 options 
were unvested under the 2002, 2003, 2004 and 2005 awards, respectively. In accordance with FAS 123(R), at the end of each 
reporting 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 requisite service period for the award is the shortest of the explicit or 
implied service periods. In the case of the Chief Executive Officer’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). To the extent that, for each of the 2004, 2006 and 2007 awards, it is probable that 100% of the remaining 
unvested award will vest based on achievement of the remaining performance conditions, compensation expense will be 
recognized over the estimated periods of achievement. To the extent that it is probable that less than 100% of the award will vest 
based upon remaining performance conditions, the shortfall will be recognized through the remaining period to nine years and 
eleven months from the grant date (i.e., the remaining service period). Changes in the estimate of probability of achievement of 
any performance condition will be reflected in compensation expense of the period of change and future periods affected by the 
change. On July 1, 2008, we granted options and restricted stock to our Chief Executive Officer. The options have an exercise 
price equal to the closing price on our common stock on the date of grant while the restricted stock awards do not include an 
exercise price. Both options and restricted stock granted vest on the basis of the achievement of specified performance based 
milestones or market conditions. Compensation expense, for the July 1, 2008 award to our Chief Executive Officer, 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, 2008, the estimated requisite service periods for the 2004, 2006 and 2007 awards, described above, were 

1.5, 7.5 and 8.5 years, respectively. For the year ended December 31, 2008, 33, 6, 7 and 56 options vested under the 2002, 2004, 
2006 and 2007 awards, respectively, which resulted in compensation expense of $17, $7, $607 and $514, respectively. The 
reduction in compensation expense recognized for the 2006 award resulted from a change in the estimate of the period of vesting 
of the related performance milestones, as described above. Prior to the adoption of FAS 123(R), these awards were accounted for 
as variable awards under APB 25 and, therefore, compensation expense, based on the intrinsic value of the vested awards on each 
reporting date, was recognized in our financial statements. 

A summary of the status of our restricted stock awarded under the Plans which has not yet vested as of December 31, 

2008 and changes during the year then ended is presented below: 

Restricted Stock Awards 

Shares  

Nonvested at January 1, 2008 
Granted 
Vested 
Forfeited 
Nonvested at December 31, 2008 

523 
264 
(174) 
(47) 
566 

Weighted 
Average Grant-
Date 
Fair Value 

$22.35 
14.37 
21.74 
22.49 
$18.81 

During 1993, we adopted an Executive Stock Option Plan (the “Executive Plan”), under which a maximum of 750 shares 

of common stock, adjusted for stock splits, stock dividends and other capital adjustments, are available for stock option awards. 
Awards issued under the Executive Plan may qualify as ISO’s, as defined by the Internal Revenue Code, or may be granted as non-
qualified stock options. Under the Executive Plan, our Board of Directors may award options to senior executive employees 
(including officers who may be Board of Directors’ members) of Progenics. The Executive Plan terminated on December 15, 
2003; any options outstanding as of the termination date shall remain outstanding until such option expires in accordance with the 
terms of the respective grant. During December 1993, the Board of Directors awarded a total of 750 stock options under the 
Executive Plan to our current Chief Executive Officer, of which 665 were non-qualified options (“NQOs”) and 85 were ISO’s. The 
ISO’s have been exercised in December 1998. The NQOs have a term of 14 years and entitle the officer to purchase shares of 

F-18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

common stock at $5.33 per share, which represented the estimated fair market value, of our common stock at the date of grant, as 
determined by the Board of Directors. As of December 31, 2007, there were no outstanding options under the Executive Plan. The 
total intrinsic value of NQOs under the Executive Plan exercised during the years ended December 31, 2006 and 2007 was $4,662 
and $4,402, respectively. 

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 2,400 and 600 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 is estimated on the date of grant in accordance with FASB 

Technical Bulletin No. 97-1 “Accounting under Statement 123 for Certain Employee Stock Purchase Plans with a Look-Back 
Option,” using the same option valuation model used for options granted under the Plans, except that the assumptions noted in the 
following table were used for the Purchase Plans: 

2006 

37% - 43% 
zero 
6 months 

  3.25% - 4.75% 

For the Years Ended 
 December 31, 
2007 

40% - 46% 
zero 
6 months 
3.91% - 5.10% 

2008 

83% - 170% 
zero 
6 months 
0.14% - 2.74% 

Expected volatility 
Expected dividends 
Expected term  
Risk-free rate 

Purchases of common stock under the Purchase Plans during the years ended December 31, 2006, 2007 and 2008 are 

summarized as follows: 

Qualified Plan 

Non-Qualified Plan 

Shares 
Purchased 

Price Range 

Weighted 
Average 
Grant-
Date Fair 
Value 

Shares 
Purchased 

Price Range 

Weighted 
Average 
Grant-
Date Fair 
Value 

2006 
2007 
2008 

126 
179 
538 

  $17.80 -  $25.84 
$16.27 - $23.46 
$4.26 - $15.32 

$3.30 
$3.41 
$4.44 

27 
45 
127 

  $18.61 - $25.84 
$17.80 - $23.46 
$6.07 - $15.32 

$3.25 
$3.43 
$4.83 

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, 2006, 2007 and 2008 was: 

Years Ended December 31, 
2007 

2008 

2006 

Recognized as: 
Research and Development 
General and Administrative 

Total 

$5,814 
6,840 
  $12,654 

$7,104 
8,202 
$15,306 

$7,241 
6,892 
$14,133 

F-19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

No tax benefit was recognized related to such compensation cost because we had a net loss for the periods presented and 
the related deferred tax assets were fully offset by valuation allowances. 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, 2008, there was $15.1 million, $8.7 million and $0.07 million of total unrecognized compensation 

cost related to nonvested stock options under the Plans, the nonvested shares and the Purchase Plans, respectively. Those costs are 
expected to be recognized over weighted average periods of 2.6 years, 1.9 years and 0.04 years, respectively. Cash received from 
exercises under all share-based payment arrangements for the year ended December 31, 2008 was $6.5 million. No tax benefit was 
realized for the tax deductions from those option exercises of the share-based payment arrangements because we had a net loss for 
the period and the related deferred tax assets were fully offset by a valuation allowance. 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 earnings per share 
calculation unless they are anti-dilutive. We incurred a net loss for the years ended December 31, 2006, 2007 and 2008 and, 
therefore, such amounts have not been included for those periods in the calculation of diluted EPS since they would be anti-
dilutive. Accordingly, basic and diluted EPS are the same for those periods. We have made an accounting policy decision to 
calculate windfall tax benefits/shortfalls for purposes of diluted EPS calculations, excluding the impact of pro forma deferred tax 
assets. This policy decision will apply when we have net income. 

4. Fair Value Measurements and Marketable Securities 

Progenics considers its marketable securities to be “available-for-sale,” as defined by FAS 115 and, accordingly, 
unrealized holding gains and losses are excluded from operations and reported as a net amount in a separate component of 
stockholders’ equity (see Note 2). Our available-for-sale investment portfolio consists of marketable securities, which include 
money market funds, corporate debt securities, securities of government-sponsored entities and auction rate securities, and is 
recorded at fair value in the accompanying Consolidated Balance Sheets. 

Marketable securities consisted of the following:  

Short-term 

Corporate debt securities and securities of 

$

$

December 31, 

2007 

December 31, 
2008 

government-sponsored entities  

Auction rate 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 

81,170
38,830
120,000

39,947
-
39,947

63,127
-
63,127

18,002
4,059
22,061

Total marketable securities 

$

159,947

$

85,188

F-20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

The following table presents our available-for-sale investments measured at fair value on a recurring basis as of 

December 31, 2008 classified by the FAS 157 valuation hierarchy (as previously discussed): 

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 

  $

- 

  $ 

- 

81,129 
4,059 

- 
- 

81,129 
- 

- 
4,059 

Description 

Money market funds 
Corporate debt securities 

and securities of 
government-sponsored 
entities 

Auction rate securities 

Total 

  $ 

129,047 

  $

43,859 

  $

81,129 

  $ 

4,059 

At December 31, 2008, we hold $4.1 million in auction rate securities which are classified as Level 3 (3% of total assets 

measured at fair value). Auction rate securities are collateralized long-term instruments that 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 
February 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. The funds associated with these failed auctions will not be accessible until a 
successful auction occurs, the issuer calls or restructures the security, the security matures and is paid or a buyer outside the 
auction process emerges. The fair value of the auction rate securities we hold includes $3.0 million of securities collateralized by 
student loan obligations subsidized by the U.S. government and $1.1 million of investment company preferred stock, and do not 
include mortgage-backed instruments. As of December 31, 2008, 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 internal analysis 

of timing of expected future successful auctions, collateralization of underlying assets of the security and credit quality of the 
security. As a result of the estimated fair value, we have determined a temporary impairment in the valuation of these securities of 
$0.3 million, recorded for the year ended December 31, 2008, which is reflected as a part of other comprehensive loss on our 
balance sheet. These securities are held “available-for-sale” in conformity with FAS 115 and the unrealized loss is included in 
other comprehensive loss in the current period. 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 balance sheet. 

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

investments. If the market conditions for our investments do not recover, we may be required to record additional losses in 2009. 
We believe we will have the ability to hold any of our investments until their markets recover. We do not anticipate having to sell 
these securities in order to operate our business. 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-21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

For those financial instruments with significant Level 3 inputs (all of which are auction rate securities), the following 

tables summarize the activities for the year ended December 31, 2008: 

Description 

Balance at beginning of period 
Transfers into Level 3 

Total realized/unrealized gains (losses) 

Included in net loss 
Included in comprehensive income (loss) 

Settlements 
Balance at end of period 
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, 2008 

$ 

$ 

$ 

- 
8,150 

- 
(316) 
(3,775) 
4,059 

(316) 

The following table summarizes the amortized cost basis, the aggregate fair value and gross unrealized holding gains and 

losses at December 31, 2007 and 2008: 

2007: 
Maturities less than one year: 
Corporate debt securities 
Government-sponsored entities 
Maturities between one and five years: 

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 

$76,853 
4,295 

39,963 

27,130 

$76,892 
4,278 

39,947 

27,130 

11,700 
$159,941 

11,700 
$159,947 

$84 
- 

64 

- 

- 
$148 

$(45) 
(17) 

(80) 

- 

- 
$(142) 

$39 
(17) 

(16) 

- 

- 
$6 

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-22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 Progenics’ 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, 2007 and 2008. 

At December 31, 2007: 

Description of Securities 

Fair Value 

Losses 

Fair Value 

Losses 

  Unrealized 

  Unrealized 

Fair 
Value 

  Unrealized 

Losses 

Less than 12 Months 

12 Months or Greater 

Total 

Corporate debt securities 
Government-sponsored entities 
Total 

$50,511     
4,278 
$54,789  

$(118) 
(17) 
$(135)  

$9,479 

$9,479 

$(7)     

$(7)     

$59,990 
4,278 
$64,268 

$(125) 
(17) 
$(142)  

At December 31, 2008: 

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)  

Corporate debt securities. Progenics’ investments in corporate debt securities with unrealized losses at December 31, 

2008 include 34 securities with maturities of less than one year ($46,028 of the total fair value and $969 of the total unrealized 
losses in corporate debt securities) and 9 securities with maturities between one and two years ($11,539 of the total fair value and 
$205 of the total unrealized losses in corporate debt securities). The severity of the unrealized losses (fair value is approximately 
0.00563 percent to 17.67 percent less than cost) and duration of the unrealized losses (weighted average of 6.98 months) correlate 
with the short maturities of the majority of these investments. The increase in unrealized losses in 2008 was attributable to our 
purchase of corporate debt securities, trading at a premium in early 2008, which declined in market value at the end of 2008. Our 
corporate debt securities are purchased by third-party brokers in accordance with its investment policy guidelines. Our brokerage 
account requires that all corporate debt securities be held to maturity unless authorization is obtained from us to sell earlier. In fact, 
Progenics’ has a history of holding corporate debt securities to maturity. Progenics’, therefore, considers that it has the intent and 
ability to hold any corporate debt securities with unrealized losses until a recovery of fair value, which may be maturity and it does 
not consider these marketable securities to be other-than-temporarily impaired at December 31, 2008. 

Auction rate securities. The unrealized losses on Progenics’ investments in auction rate securities during a period of less 

than 12 months 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. The severity of the unrealized losses (fair value is approximately 
6 percent to 8 percent less than cost) and duration of the unrealized losses (weighted average of 9.25 months) correlate with the 
short maturities of these investments. Similar to corporate debt securities, discussed above, Progenics’ considers that it has the 
intent and ability to hold any investments in auction rate securities with unrealized losses until a recovery of fair value, which may 
be maturity or a successful auction and it does not consider these marketable securities to be other-than-temporarily impaired at 
December 31, 2008. 

5. Accounts Receivable 

National Institutes of Health 
Royalties 
Other 

Total 

December 31, 

2007 

2008 

$

$

1,956 
-
39
1,995

$

$

1,107
229
1
1,337

F-23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

6. Fixed Assets 

Computer equipment 
Machinery and equipment 
Furniture and fixtures 
Leasehold improvements 
Construction in progress 

Less, accumulated depreciation and amortization 

Total 

December 31, 

2007 

2008 

1,935 
11,695
726
10,448
874
25,678
(12,167)
13,511

$

$

2,335
13,161
750
10,546
907
27,699
(16,628)
11,071

$

$

At December 31, 2007, $5.7 million, $0.9 million and $0.7 million of leasehold improvements were being amortized over 

periods of 2.3 – 5.8 years, 4.7 years and 8.5 years, respectively, under leases with terms through December 31, 2009, June 29, 
2012 and December 31, 2014, 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 the same 
respective leases. 

7. Accounts Payable and Accrued Expenses 

Accounts payable 
Accrued consulting and clinical trial costs 
Accrued payroll and related costs 
Legal and professional fees 
Other 

Total 

$

$

December 31, 

2007 

2008 

1,158 
10,848
1,489
1,127
143
14,765

$

$

899
3,556
1,093
925
23
6,496

8. 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.  

In connection with the adoption of FAS 123(R) on January 1, 2006, we eliminated $4,498 of unearned compensation, 

related to share-based awards granted prior to the adoption date that were unvested as of that date, against additional paid-in-
capital.  

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, funding for which comes from the $15.0 million milestone payment we received from Wyeth related 
to U.S. marketing approval for RELISTOR. Purchases under the program are made at our discretion subject to market conditions 
in the open-market or otherwise, and in accordance with the regulations of the SEC, including Rule 10b-18. 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. Reacquired shares will be held in treasury until redeployed or retired. We have $12.3 million remaining 
available for purchases under the program. 

F-24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

9. License Agreements with Wyeth Pharmaceuticals and Ono Pharmaceutical 

On December 23, 2005, we entered into our Collaboration Agreement with Wyeth for the purpose of developing and 

commercializing RELISTOR. The Wyeth Collaboration Agreement involves three formulations of RELISTOR: (i) a subcutaneous 
formulation to be used in patients with OIC, (ii) an intravenous formulation to be used in patients with POI and (iii) an oral formulation 
to be used in patients with OIC. 

The Wyeth Collaboration Agreement establishes the JSC and JDC, each with an equal number of representatives from both 

Wyeth and us. The JSC is responsible for coordinating the companies’ key activities, while the JDC oversees, coordinates and expedites 
the development of RELISTOR by Wyeth and us. A JCC, composed of company representatives in number and function according to 
our respective responsibilities, facilitates open communication between Wyeth and us on commercialization matters.  

We have assessed the nature of our involvement with the committees. Our involvement in the JSC and JDC is one of 

several obligations to develop the subcutaneous and intravenous formulations of RELISTOR through regulatory approval in the 
U.S. We have combined the committee obligations with the other development obligations and are accounting for these obligations 
during the development phase as a single unit of accounting. After the period during which we have developmental 
responsibilities, however, we have assessed that the nature of our involvement with the committees will be a right, rather than an 
obligation. Our assessment is based upon the fact that we negotiated to be on the committees as an accommodation for our granting of 
the license for RELISTOR to Wyeth. Wyeth has been granted by us an exclusive license (even as to us) to the technology and know-
how regarding RELISTOR and has been assigned the agreements for the manufacture of RELISTOR by third parties. During that 
period, the activities of the committees will be focused on Wyeth’s development and commercialization obligations. 

Under the Wyeth Collaboration Agreement, we granted to Wyeth an exclusive, worldwide license, even as to us, to develop 

and commercialize RELISTOR. Wyeth returned the rights with respect to Japan to us in connection with its election not to develop 
RELISTOR there and the transaction with Ono discussed in Note 1, above. We are responsible for developing the subcutaneous and 
intravenous formulations in the U.S. until they receive regulatory approval, while Wyeth is responsible for these formulations outside 
the U.S. other than Japan. Wyeth is also responsible for the development of the oral formulation worldwide excluding Japan. We have 
transferred to Wyeth all existing supply agreements with third parties for RELISTOR and have sublicensed intellectual property rights 
to permit Wyeth to manufacture or have manufactured RELISTOR, during the development and commercialization phases of the 
Wyeth Collaboration Agreement, in both bulk and finished form for all products worldwide. We have no further manufacturing 
obligations under the Collaboration. We have and will continue to transfer 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 
Wyeth Collaboration Agreement.  

In the event the JSC approves for development any formulation of RELISTOR other than subcutaneous, intravenous or oral or 

any other indication for a product using any formulation of RELISTOR, Wyeth is obligated to be responsible for development of such 
products as provided in the Wyeth Collaboration Agreement, including conducting clinical trials and obtaining and maintaining 
regulatory approval. Wyeth is also responsible for the commercialization of the subcutaneous, intravenous and oral products, and any 
other methylnaltrexone based products developed upon approval by the JSC, throughout the world excluding Japan. Wyeth is obligated 
to pay all costs of commercialization of all products, including manufacturing costs, and will retain all proceeds from the sale of the 
products, subject to the royalties payable by Wyeth to us. Decisions with respect to commercialization of any products developed under 
the Wyeth Collaboration Agreement are to be made solely by Wyeth. 

Wyeth granted to us an option (the “Co-Promotion Option”) to enter into a Co-Promotion Agreement to co-promote any of the 

products developed under the Wyeth Collaboration Agreement, at any time, subject to certain conditions. We may exercise this option 
on an annual basis. We did not exercise the option in connection with the initial commercialization of RELISTOR, and as of December 
31, 2008 have not determined when we will exercise it, if at all. The extent of our co-promotion activities and the fee that we will be 
paid by Wyeth for these activities will be established if, as and when we exercise our option. Wyeth will record all sales of products 
worldwide (including those sold by us, if any, under a Co-Promotion Agreement). Wyeth may terminate any Co-Promotion Agreement 
if a top 15 pharmaceutical company acquires control of us. Our potential right to commercialize any product, including our Co-
Promotion Option, is not essential to the usefulness of the already delivered products or services (i.e., our development obligations) and 
our failure to fulfill our co-promotion obligations would not result in a full or partial refund of any payments made by Wyeth to us or 
reduce the consideration due to us by Wyeth or give Wyeth the right to reject the products or services previously delivered by us. 

We are recognizing revenue in connection with the Wyeth Collaboration Agreement under the SAB 104 and will apply the 

Substantive Milestone Method (see Note 2). In accordance with the EITF 00-21 all of our deliverables under the Wyeth Collaboration 

F-25 

 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

Agreement, consisting of granting the license for RELISTOR, transfer of supply contracts with third party manufacturers of 
RELISTOR, transfer of know-how related to RELISTOR development and manufacturing, and completion of development for the 
subcutaneous and intravenous formulations of RELISTOR in the U.S., represent one unit of accounting since none of those components 
has standalone value to Wyeth prior to regulatory approval of at least one product; that unit of accounting comprises the development 
phase, through regulatory approval, for the subcutaneous and intravenous formulations in the U.S. 

Within five business days of execution of the Collaboration Agreement, Wyeth made a non-refundable, non-creditable 

upfront payment of $60.0 million, for which we deferred revenue at December 31, 2005. Subsequently, we are recognizing revenue 
related to the upfront license payment over the period during which the performance obligations, noted above, are being performed 
using the proportionate performance method. We expect that period to extend through 2009. We are recognizing revenue using the 
proportionate performance method since we can reasonably estimate the level of effort required to complete our performance 
obligations under the Wyeth Collaboration Agreement and such performance obligations are provided on a best-efforts basis. Full-
time equivalents are being used as the measure of performance. Under the proportionate performance method, revenue related to 
the upfront license payment is recognized in any period as the percent of actual effort expended in that period relative to expected 
total effort. The total effort expected is based upon the most current budget and development plan which is approved by both us 
and Wyeth and includes all of the performance obligations under the arrangement. Significant judgment is 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. Since we have no obligation to develop the 
subcutaneous and intravenous formulations of RELISTOR outside the U.S. or the oral formulation at all and have no significant 
commercialization obligations for any product, recognition of revenue for the upfront payment is not required during those periods, if 
they extend beyond the period of our development obligations. If Wyeth terminates the Collaboration in accordance with its terms, 
we will recognize any unamortized remainder of the upfront payment at the time of the termination. 

The amount of the upfront license payment that we recognized as revenue for each fiscal quarter prior to the third quarter 

of 2007 was based upon several revised 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 will extend, and over which the upfront payment will be amortized, 
was extended from the end of 2008 to the end of 2009. Consequently, the amount of revenue recognized from the upfront payment 
during the year ended December 31, 2008 declined relative to that in the comparable period of 2007. 

Beginning in January 2006, costs for the development of RELISTOR incurred by Wyeth or us are being paid by Wyeth. 

Wyeth has the right once annually to engage an independent public accounting firm to audit expenses for which we have been 
reimbursed during the prior three years. If the accounting firm concludes that any such expenses have been understated or overstated, a 
reconciliation will be made. We are recognizing 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 has made or will make the 
following payments to us, provided specific milestones, including clinical, regulatory and sales events, are reached, and taking in to 
account the modifications made in connection with the Ono transaction discussed in Note 1, above: (i) development and sales 
milestones and contingent payments, consisting of defined non-refundable, non-creditable payments, totaling $334.0 million, in respect 
of clinical and regulatory events and, for each form approved as a commercial product, combined annual worldwide (excluding Japan) 
net sales, as defined, and (ii) sales royalties during each calendar year during the royalty period, as defined, based on certain percentages 
of net sales in the U.S. and worldwide (excluding Japan). Upon achievement of defined substantive development milestones by us for 
the subcutaneous and intravenous formulations, the milestone payments will be recognized as revenue. Recognition of revenue for 
developmental contingent events related to the oral formulation, which is the responsibility of Wyeth, will be recognized as revenue 
when Wyeth achieves those events, if they occur subsequent to completion by us of our development obligations, since we would have 
no further obligations related to those products. Otherwise, if Wyeth achieves any of those events before we have completed our 
development obligations, recognition of revenue for the Wyeth contingent events will be recognized over the period from receipt of the 
milestone payment to the completion of our development obligations. All sales milestones will be recognized as revenue when earned.  

During the years ended December 31, 2006, 2007 and 2008, we recognized $18.8 million, $16.4 million and $10.2 
million, respectively, of revenue from the $60.0 million upfront payment and $34.6 million, $40.1 million and $24.7 million, 
respectively, as reimbursement for our out-of-pocket development costs, including our labor costs. In October 2006, we earned a 
$5.0 million milestone payment in connection with the start of a phase 3 clinical trial of intravenous RELISTOR for the treatment 
of POI. In May 2007, April 2008 and July 2008, we earned $9.0 million, $15.0 million and $10.0 million, respectively, in 

F-26 

 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

milestone payments upon the submission and approval for review of applications for marketing in the U.S. and European Union of 
the subcutaneous formulation of RELISTOR in patients receiving palliative care, the FDA approval of subcutaneous RELISTOR 
in the U.S. and the European approval of subcutaneous formulation of RELISTOR, respectively. We considered those milestones 
to be substantive based on (i) 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, (ii) the amount of the payment received 
relative to the significant costs incurred since inception of the Wyeth Collaboration Agreement and amount of effort expended to 
achieve the milestones, and (iii) the passage of 17, 28 and 31 months, respectively, from inception of the Wyeth Collaboration 
Agreement to the achievement of those milestones. Therefore, we 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 have recorded $14.6 million as deferred revenue – current, which is expected to be 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.  

Royalty revenue is recognized upon the sale of related products, 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, and in accordance with the policies above. 

In addition, during year ended December 31, 2008, we earned royalties of $665, based on the net sales of subcutaneous 
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, which is expected to be recognized as royalty income over the period of our development 
obligations relating to RELISTOR. We incurred $67 of royalty costs and recognized $15 of royalty expenses during the year ended 
December 31, 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. The $52 of deferred royalty costs are expected to be recognized as royalty 
expense over the period of our development obligations relating to RELISTOR. 

The Wyeth Collaboration Agreement extends, unless terminated earlier, on a country-by-country and product-by-product 

basis, until the last to expire royalty period for any product. We may terminate the Wyeth Collaboration Agreement at any time upon 90 
days written notice to Wyeth upon Wyeth’s material uncured breach (30 days in the case of breach of a payment obligation). Wyeth 
may, with or without cause, terminate the Collaboration effective on or after the second anniversary of the first U.S. commercial sale of 
RELISTOR, by providing us with at least 360 days prior written notice. Wyeth may also terminate the agreement (i) upon 30 days 
written notice following one or more serious safety or efficacy issues that arise and (ii) upon 90 days written notice of a material 
uncured breach by us. Upon termination of the Wyeth Collaboration Agreement, the ownership of the license we granted to Wyeth 
will depend on which party initiates the termination and the reason for the termination. 

In October 2008, we entered into an exclusive license agreement with Ono under which we licensed to Ono the rights to 

subcutaneous RELISTOR in Japan and under that agreement, in November 2008, we received from Ono an upfront payment of 
$15.0 million. As of December 31, 2008, relative to the $15.0 million upfront payment from Ono, we have recorded $15.0 million 
as deferred revenue – current, which we expect to recognize as revenue during the first quarter of 2009, upon satisfaction of our 
performance obligations. 

Ono is responsible for developing and commercializing subcutaneous RELISTOR in Japan, including conducting the 
clinical development necessary to support regulatory marketing approval. Ono is to 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 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. Supervision of and consultation with respect to Ono’s development and commercialization 
responsibilities will be carried out by joint committees consisting of members from both Ono and us. Ono may request us to 
perform activities related to its development and commercialization responsibilities beyond our participation in these 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. 

F-27 

 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

10. Acquisition of Contractual Rights from Licensors 

In 2005, we acquired substantially all of the assets of UR Labs, Inc. (“URL”), comprised in part of an exclusive 

sublicense agreement to develop and commercialize methylnaltrexone, the active ingredient of RELISTOR, under rights URL 
licensed from the University of Chicago. We accounted for the acquisition of the rights and responsibilities as an asset purchase. 
The acquired rights relate to the methylnaltrexone and our research and development activities for methylnaltrexone, for which 
technological feasibility had not yet been established, for which there was no identified alternative future use, and which had not 
received regulatory approval for marketing. We continue to have an obligation for payments (including royalties) to the University 
of Chicago. 

11. Commitments and Contingencies 

a. Operating Leases 

As of December 31, 2008, we lease office and laboratory space, as follows:  

Leased 
Space 

Area  
(Square Feet) 

Termination 
Date 

Other Terms 

Sublease 1 

  91.7 

  December 30, 2009 

Lease 1 

  32.6 

  December 31, 2009 

  Renewable for two five-year terms 

Sublease 2 

   5.9 

June 29, 2012 

  Four months rent-free beginning April 1, 2006; 

Lease 2 

Lease 3 

Lease 4 

Total 

  December 31, 2014 

converts to Lease 2 

   9.2 

June 29, 2012 

  Three months rent-free beginning August 13, 2007; 
renewable for two five-year terms; lease incentive 
of $276 provided by the landlord 

   6.5 

  August 31, 2012 

  Renewable for two terms co-terminous with  

Lease 1 

145.9 

Such amounts are recognized as rent expense on a straight-line basis over the term of the respective leases, including rent-

free periods. 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. At the inception of Lease 3, in August 2007, the landlord agreed to pay $276 of leasehold 
improvements related to the renovation of that office space. That lease incentive is being amortized as a reduction of rent expense 
on a straight-line basis over the initial term of the lease.  

As of December 31, 2008, future minimum annual payments under all operating lease agreements are as follows: 

Years ending 
December 31, 

2009 
2010 
2011 
2012 
      2013 
             Thereafter 
                        Total 

Minimum 
Annual Payments 
$   3,238 
504 
517 
391 
194 
194 
$   5,038 

F-28 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

Rental expense totaled approximately $1,694, $2,415 and $2,971 for the years ended December 31, 2006, 2007 and 2008, 
respectively. For the years ended December 31, 2006 and 2007, we recognized rent expense in excess of amounts paid of $74 and 
$17, respectively, due to the recognition of escalation clauses and lease incentives. For the year ended December 31, 2008, 
amounts paid exceeded rent expense by $93, 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, 2006, 2007 and 2008 were 
approximately $2,932, $2,974 and $3,533, respectively. 

b. Licensing, Service and Supply Agreements of Progenics Pharmaceuticals, Inc. 

Progenics has entered into a variety of intellectual property-based license and service agreements in connection with its 

product development programs. During 2005, we also entered into a supply agreement for methylnaltrexone. During 2006, we 
transferred that agreement and the obligation for the manufacture of methylnaltrexone, in bulk and finished form, to Wyeth. In 
connection with all the agreements discussed below, Progenics has recognized milestone, license and sublicense fees and supply 
costs, which are included in research and development expenses, totaling approximately $1,825, $350 and $1,529 for the years 
ended December 31, 2006, 2007 and 2008, respectively. In addition, as of December 31, 2008, remaining payments, including 
amounts accrued, associated with milestones and defined objectives as well as annual maintenance fees with respect to the 
agreements referred to below total approximately $4,325.  

i. Columbia University 

For a number of years, we have been party to a license agreement with Columbia University (“Columbia”) under which 
we obtained rights to technology and materials for a program we have since terminated. As of December 31, 2008, we had paid 
Columbia a total of $890,000 under this license agreement, including $25,000 in royalties. In January 2009, we and Columbia 
agreed to terminate and amend certain rights granted in this license in exchange for a one-time payment of $300,000, which was 
accrued as of December 31, 2008. Under this new arrangement, we retain rights to certain technology for sales of reagents and 
other purposes, subject to royalties.  

ii. Sloan-Kettering Institute for Cancer Research 

We were a party to a license agreement with Sloan-Kettering under which we obtained the worldwide, exclusive rights to 
specified technology relating to ganglioside conjugate vaccines, including GMK, and its use to treat or prevent cancer. The license 
was terminated on February 15, 2008. 

iii. Aquila Biopharmaceuticals, Inc. 

For a number of years, we were party to a license and supply agreement with Aquila Biopharmaceuticals, Inc., a wholly 
owned subsidiary of Antigenics Inc., for a program we have since terminated. In November 2008, the agreement was terminated 
and a portion of the contingent shares issued to Aquila in connection with the agreement have since been cancelled.  

iv. Facet Biotech Corporation (formerly, Protein Design Labs, Inc.) 

Protein Design Labs (now Facet Biotech Corporation (“Facet”)) 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 the tenth anniversary of the first commercial sale of a product developed 
thereunder, expiration of the last-to-expire patent or the tenth anniversary of the latest filed pending patent application. 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. 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, 2008, we have paid 
Facet’s predecessors $5.2 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. 

v. UR Labs, Inc./ University of Chicago 

We have an exclusive sublicense agreement with URL to develop and commercialize methylnaltrexone under rights URL 
licensed from the University of Chicago. After entering this sublicense, we subsequently acquired substantially all of the assets of 

F-29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

URL, comprised of its rights and responsibilities under its University of Chicago license, its sublicense with us and related 
agreements, and at the same time modified some of those obligations to third parties. As a result, our only remaining obligations 
represent payments to the University of Chicago under the license. 

We have also entered into two agreements with the University of Chicago which give us the option to license certain of its 
intellectual property over defined option periods. As of December 31, 2008, we have paid the University of Chicago $540,000 and 
may make payments aggregating $660,000 over the option periods. 

c. Licensing and Collaboration Agreements of PSMA Development Company LLC 

In connection with all the agreements discussed below, PSMA LLC, which became our wholly owned subsidiary on April 

20, 2006 (see Note 12) has recognized milestone, license and annual maintenance fees, which are included in research and 
development expenses of PSMA LLC, totaling approximately $200, $600 and $865 for the years ended December 31, 2006, 2007 
and 2008, respectively. In addition, in connection with our acquisition of a former member’s interest in PSMA LLC (see Note 12), 
the former member granted an exclusive license to PSMA LLC, under which PSMA LLC recognized $25, $38 and $28 in license 
fees for the years ended December 31, 2006, 2007 and 2008, respectively. As of December 31, 2008, remaining payments, 
including amounts accrued, associated with milestones and defined objectives with respect to the agreements referred to below, as 
well as with respect to the license granted by the former member to PSMA LLC, total approximately $78.1 million. 

i. Amgen Fremont, Inc. (formerly Abgenix) 

PSMA LLC 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 
payments under this license upon the occurrence of defined milestones associated with the development and commercialization 
program for products incorporating an antibody generated utilizing the XenoMouse technology. As of December 31, 2008, PSMA 
LLC has paid to Abgenix $850,000 under this agreement. If PSMA LLC achieves certain milestones specified under the 
agreement, it will be obligated to pay Abgenix up to an additional $6.25 million. In addition, PSMA LLC is required to pay 
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 this agreement upon 30 days prior 
written notice. If not terminated early, this 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. 

ii. AlphaVax Human Vaccines 

PSMA LLC has a worldwide exclusive license agreement with AlphaVax Human Vaccines (“Alpha Vax”) to use its 

AlphaVax Replicon Vector system to create a therapeutic prostate cancer vaccine incorporating PSMA LLC’s proprietary PSMA 
antigen. PSMA LLC is obligated to make payments under the license upon the occurrence of certain milestones associated with the 
development and commercialization program for products incorporating AlphaVax’s system. As of December 31, 2008, PSMA 
LLC has paid to AlphaVax $1.7 million under this agreement. If PSMA LLC achieves certain milestones specified under the 
agreement, it will be obligated to pay AlphaVax up to an additional $5.3 million. In addition, PSMA LLC is required to pay annual 
maintenance fees of $100,000 until the first commercial sale 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 the agreement upon 30 days prior written notice. If not 
terminated early, this 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. 

iii. Seattle Genetics, Inc. 

PSMA LLC has a collaboration agreement with Seattle Genetics, Inc. (“SGI”), under which SGI has granted PSMA LLC 

an exclusive worldwide license to its proprietary ADC technology. Under the license, PSMA LLC has the right to use this 
technology to link chemotherapeutic agents to PSMA LLC’s monoclonal antibodies that target prostate specific membrane 
antigen. The ADC technology is based, in part, on technology licensed by SGI from third parties. PSMA LLC is responsible for 
research, product development, manufacturing and commercialization of all products under the SGI agreement. PSMA LLC may 

F-30 

 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

sublicense the ADC technology to a third party to manufacture ADCs for both research and commercial use. Under the agreement, 
PSMA LLC is obligated to make maintenance payments, additional payments aggregating up to $14.0 million upon the 
achievement of certain milestones 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 SGI agreement upon 
advance written notice to SGI. SGI may terminate the agreement 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 SGI agreement after written notice upon an 
uncured breach or in the event of bankruptcy of the other party. As of December 31, 2008, PSMA LLC has paid to SGI 
approximately $3.6 million under this agreement, including $1.0 million in milestone payments. 

d. 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 $893, $1,092 and $358 for the years ended December 31, 2006, 2007 and 2008, 
respectively. Those expenses include the fair value of stock options granted during 2006, 2007 and 2008, which were fully vested 
at grant date, of approximately $620, $691 and $217, 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 3). 

12. PSMA Development Company LLC 

PSMA LLC was formed on June 15, 1999 as a joint venture between us and a former member (each a “Member” and 
collectively, the “Members”) for the purposes of conducting research, development, manufacturing and marketing of products 
related to PSMA. On April 20, 2006, we acquired the former member’s 50% membership interest in PSMA LLC, including its 
economic interests in capital, profits, losses and distributions of PSMA LLC and its voting rights, in exchange for a cash payment 
of $13.2 million (the “Acquisition”). We also paid $259 in transaction costs related to the Acquisition. In connection with the 
Acquisition, the Licensing Agreement entered into by the Members upon the formation of PSMA LLC, under which the former 
member had granted a license to PSMA LLC for certain PSMA-related intellectual property, was amended.  

Since the acquired intellectual property and license rights relate to research and development projects that, at the acquisition 

date, had not reached technological feasibility, did not have an identified alternative future use and had not received regulatory approval 
from the FDA for marketing, at the acquisition date we charged $13,209 to research and development expense after consideration of the 
transaction costs and net tangible assets acquired.  

13. 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 2006, 2007 and 2008, we matched 100% 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 $1,135, $1,538 and $1,727 to the 
Amended Plan for the years ended December 31, 2006, 2007 and 2008, respectively. No discretionary contributions were made 
during those years. 

14. Income Taxes 

We account for income taxes using the liability method in accordance with FAS 109. 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. 

F-31 

 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

There is no provision or benefit for federal or state income taxes for the years ended December 31, 2006, 2007 or 2008. 

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. 

Deferred tax assets consist of the following: 

Depreciation and amortization 
R&E tax credit carry-forwards 
AMT credit carry-forwards 
Net operating loss carry-forwards 
Deferred revenue 
Stock compensation 
Other items 

Valuation allowance 

December 31, 

2007 
   $      5,912 
8,203
306
73,792
10,632
8,155
2,713
109,713
(109,713)
— 

     $ 

2008 
    $      6,231 
9,139
306
87,672
12,396
10,923
2,402
129,069
(129,069)
— 

     $ 

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. The increase in the valuation allowance 
resulted primarily from the additional net operating loss carry-forwards. 

The following is a reconciliation of income taxes computed at the Federal statutory income tax rate to the actual effective 

income tax provision: 

Year Ended December 31, 

2006 

2007 

2008 

U.S. Federal statutory rate 
State income taxes, net of Federal benefit 
Research and experimental tax credit 
Change in valuation allowance 
Other 
Income tax provision 

(34.0)% 
(5.8) 
(6.4) 
43.1 
  3.1 
     0.0% 

(34.0)% 
(5.6) 
(4.2) 
40.8 
  3.0 
     0.0% 

(34.0)% 
(5.4) 
(4.3) 
43.3 
0.4 
0.0% 

As of December 31, 2008, we had available, for tax return purposes, unused NOL’s of approximately $239.5 million, 

which will expire in various years from 2018 to 2028, $17.4 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 its FIN 48 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. Upon adoption of FIN 48 on January 1, 2007 and during the years ended December 31, 2007 
and 2008, 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. As of the date of adoption and at December 31, 2008, 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, 2008, we are subject to federal and state income tax in the United States. Open tax years 
relate to years in which unused net operating losses were generated or, if used, for which the statute of limitation for examination 
by taxing authorities has not expired. Thus, upon adoption of FIN 48 and at December 31, 2008, 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 FIN 48 or as of and for the years ended 
December 31, 2007 and 2008.  

F-32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

In connection with our adoption of FAS 123(R) on January 1, 2006 (see Note 3), we elected to implement the short cut 

method of calculating our pool of windfall tax benefits. Accordingly, our pool of windfall tax benefits on January 1, 2006 was zero 
because it had NOL’s since inception and, therefore, had never recognized any net increases in additional paid-in capital in our 
annual financial statements related to tax benefits from stock-based employee compensation during fiscal periods subsequent to the 
adoption of FAS 123 but prior to the adoption of FAS 123(R). 

Our research and experimental (“R&E”) tax credit carry-forwards of approximately $9.1 million at December 31, 2008 
expire in various years from 2009 to 2028. During the year ended December 31, 2008, research and experimental tax credit carry-
forwards of approximately $91 expired.  

15. 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, 2006, 2007 and 2008, 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 

2006: 

Basic and diluted 

$ (21,618)

25,669

$ (0.84)

2007: 

Basic and diluted 

$ (43,688)

27,378

$ (1.60)

2008: 

Basic and diluted 

$ (44,672)

29,654

$ (1.51)

For the years ended December 31, 2006, 2007 and 2008, potential common shares which have been excluded from diluted 

per share amounts because their effect would have been anti-dilutive include the following: 

2006 

2007 

2008 

Years Ended December 31, 

Weighted 
Average 
Number 

Weighted 
Average 
Exercise Price 

Weighted 
Average 
Number 

Options and warrants 
Restricted stock 

Total 

$  15.13

4,663
312
4,975

4,703
454
5,157

Weighted 
Average 
Exercise Price 
$17.56

Weighted 
Average 
Number 

Weighted 
Average 
Exercise Price 

$18.01

4,854
522
5,376

F-33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PROGENICS PHARMACEUTICALS, INC. 

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

16. Unaudited Quarterly Results 

Summarized quarterly financial data for the years ended December 31, 2007 and 2008 are as follows: 

Revenue 
Net loss 
Net loss per share (basic and diluted) 

Revenue 
Net loss 
Net loss per share (basic and diluted) 

Quarter Ended 
March 31, 
2007 
(unaudited) 
$17,637 
(10,433) 
(0.40) 

Quarter Ended 
March 31, 
2008 
(unaudited) 
$14,762 
(15,485) 
(0.52) 

Quarter Ended 
June 30, 
2007 
(unaudited) 
$25,457 
(2,383) 
(0.09) 

Quarter Ended 
September 30, 
2007 
(unaudited) 
$17,018 
(15,600) 
(0.58) 

  Quarter Ended
December 31, 
2007 
(unaudited) 
$15,534 
(15,272) 
(0.53) 

Quarter Ended 
June 30, 
2008 
(unaudited) 
$28,584 
(2,369) 
(0.08) 

  Quarter Ended 
September 30, 
2008 
(unaudited) 
$17,497 
(12,220) 
(0.41) 

  Quarter Ended
December 31, 
2008 
(unaudited) 
$6,828 
(14,598) 
(0.49) 

F-34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, M.D., PH.D. 

Paul J. Maddon, M.D., Ph.D. 
(Duly authorized officer of the 
Registrant and Chief Executive Officer, Chief 
Science Officer and Director) 

Date: March 13, 2009 

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 

Capacity 

Co-Chairman 

Date 

March 13, 2009 

/s/ PAUL J. MADDON, M.D., PH.D. 
Paul J. Maddon, M.D., Ph.D. 

Chief Executive Officer, Chief Science 
Officer and Director (Principal Executive Officer) 

March 13, 2009 

/s/ CHARLES A. BAKER 
Charles A. Baker 

/s/ PETER J. CROWLEY 
Peter J. Crowley 

/s/ MARK F. DALTON 
Mark F. Dalton 

/s/ STEPHEN P. GOFF, PH.D. 
Stephen P. Goff, Ph.D. 

/s/ DAVID A. SCHEINBERG, M.D., PH.D. 
David A. Scheinberg, M.D., Ph.D. 

/s/ NICOLE S. WILLIAMS 
Nicole S. Williams 

/s/ ROBERT A. MCKINNEY, CPA 
Robert A. McKinney, CPA 

March 13, 2009 

March 13, 2009 

March 13, 2009 

March 13, 2009 

March 13, 2009 

March 13, 2009 

March 13, 2009 

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 the Amendment to Option and License Agreement, dated September 17, 2005, by and between the 
University of Chicago and UR Labs, Inc., by the 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 
by the 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 †† 

  License Agreement, dated as of October 16, 2008, by and among Ono Pharmaceutical Co., Ltd. and the Registrant. 

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10.30 †† 

10.31 †† 

10.32 †† 

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. 

   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. 

† 
†† 
‡ 

   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. 

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Stockholders’ Information

Securities and Related Information

The Company’s Common Stock is traded on the Nasdaq National Market under the symbol PGNX. 
As of April 13, 2009 the Company had approximately 345 stockholders of record.

Below are high and low sales prices for the Company’s Common Stock as reported by 
Nasdaq for the periods indicated:

        ($)  High  Low
2007 
20.02
First Quarter 
30.31 
21.14
Second Quarter  27.59 
20.55
Third Quarter 
26.10 
17.77
Fourth Quarter  23.98 

        ($)  High  Low
2008 
  4.33
First Quarter 
19.25 
  6.66
Second Quarter  17.94 
11.88
Third Quarter 
17.50 
  6.77
Fourth Quarter  14.10 

Company Information

Transfer Agent

For general and financial information 
about the Company, please contact:

Progenics Pharmaceuticals, Inc.
777 Old Saw Mill River Road
Tarrytown, NY 10591

Phone:  914-789-2800
914-789-2817
Fax: 

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 Monday, June 8, 2009 at:

Landmark at Eastview
Rockland Room
777 Old Saw Mill River Road
Tarrytown, NY 10591

American Stock Transfer and Trust Company
40 Wall Street
New York, New York 10005

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 email copy 
of these materials at no charge.