IMMUNOMEDICS INC
424B3, 2000-01-28
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
Previous: GPU NUCLEAR INC /NJ/, U-12-IB, 2000-01-28
Next: FLIGHTSERV COM, SC 13G, 2000-01-28




PROSPECTUS

                               IMMUNOMEDICS, INC.

                        2,575,000 Shares of Common Stock

The Issuer

Immunomedics. Inc.
300 American Road
Morris Plains, New Jersey 07950
(973) 605-8200

The Selling Stockholders

         One selling  stockholder  is  offering to sell 75,000  shares of common
stock that it may  acquire  upon  exercise  of a warrant  that we issued to that
stockholder  in its  capacity  as  our  financial  advisor.  The  other  selling
stockholders  are  offering  to sell  2,500,000  shares of common  stock that we
issued  to them on  December  14,  1999  pursuant  to a  Common  Stock  Purchase
Agreement.  Additional  information  concerning our agreements  with the selling
stockholders  is set  forth  under the  captions  "Immunomedics  Agreement  with
Financial Advisor" and "Immunomedics - December 1999 Financing."

Trading Symbol

         Nasdaq National Market -  "IMMU"

         The  closing  sale  price of a share of our  common  stock on Nasdaq on
January 26, 2000 was $18.50.

The Offering

         The selling  stockholders may sell shares of our common stock from time
to time on the  Nasdaq  National  Market at the  prevailing  market  price or in
private,  negotiated transactions.  The shares will be sold at prices determined
by the selling  stockholders.  We will not receive any part of the proceeds from
the sale. We are paying the expenses in connection with the  registration of the
shares with the SEC. The selling stockholders may be deemed to be "underwriters"
within the meaning of the Securities  Act in connection  with the sale of shares
of our common stock.

         A  purchase  of  shares  involves  a high  degree of risk.  You  should
purchase shares only if you can afford a complete loss of your  investment.  See
"Risk Factors" beginning on page 4.

Neither  the  Securities  and  Exchange  Commission  nor  any  state  securities
commission  has approved or disapproved  these  securities or determined if this
prospectus  is truthful or  complete.  Any  representation  to the contrary is a
criminal offense.

                The date of this prospectus is January 27, 2000.


<PAGE>
<TABLE>
<CAPTION>


                                TABLE OF CONTENTS
<S>        <C>                                                                                              <C>
Risk Factors:
           We Have a History of Operating Losses and May Never Become
              Profitable................................................................................     4
           We May Not Be Able to Successfully Develop a Market for Our Approved
              Products..................................................................................     4
           We May Not Receive Approval to Sell LeukoScan in the United States
              in a Timely Manner........................................................................     4
           We May Not Be Able to Bring to Market the Products We Are Currently
              Developing or Sustain Their Sales After Approval..........................................     4
           If We Do Not Obtain Additional Capital, We May Be Required to Curtail
              Our Operations............................................................................     5
           Our Limited Marketing and Sales Experience and Capability Could Impact
              Our Ability to Successfully Sell Our Current Products.....................................     5
           We May Have to Rely on Partners to Help Us Market and Sell Our
              Products Under Development................................................................     5
           We Could Be Temporarily Unable to Sell Our Products If Our Agreements
              with our Distributors Were Terminated.....................................................     5
           We Could Be Temporarily Unable to Sell Our Products If Our Agreement
              with our End Stage Manufacturer Was Terminated............................................     6
           Our Internal Manufacturing Capability May Limit What We Can Sell.............................     6
           We May Be Unable to Continue to Use Mouse Fluids for Future Products
              Which Could Require Us to Make Expensive and Time Consuming Changes
              to Our Products in Development............................................................     6
           Our Product Development Is Dependent Upon Our Continued Relationship
              with The Center for Molecular Medicine and Immunology.....................................     6
           Certain Potential Conflicts of Interest Exist with The Center for Molecular
              Medicine and Immunology Which Could Affect Our Operations.................................     6
           We May Not Be Able to Obtain Government Regulatory Approval in a
              Timely Manner to Market and Sell Our Products or Approval May Be Withdrawn................     7
           Our Business Involves the Use of Hazardous Materials.........................................     7
           We Must Maintain Our Manufacturing Facilities in Accordance With
              Government Regulatory Requirements........................................................     7
           We Have Agreed to Certain Covenants in our 1999 Financing Which Place Restrictions
              on the Operation of our Business..........................................................     7
           Changes to Health Care Reimbursement Could Adversely Affect Our
              Operations................................................................................     8
           The Loss of Key Employees Could Adversely Affect our Operations..............................     8
           We Face Substantial Competition in the Biotechnology Field and
              May Not Be Able to Successfully Compete...................................................     8
           Our Products May Be Rendered Obsolete By Rapid Technological Change..........................     8
           If We Are Unable to Protect Our Intellectual Property Rights, We
              Could Lose Our Competitive Advantage......................................................     9
           Our Products May Infringe Third Party Intellectual Property Rights...........................     9
           Our Operations Could Suffer If We Are Unsuccessful in Our Pending
              Infringement Claims Concerning Our CEA Antibodies.........................................     9
           Product Liability Claims in Excess of the Amount of Our Insurance
              Would Adversely Affect Our Financial Condition............................................     9
           Our Principal Stockholder Can Influence Most Matters Requiring
              Approval By Our Stockholders..............................................................     9
           Resales of Shares Held By Our Directors and Executive Officers May
              Lower the Market Price of Our Common Stock................................................    10
           Our Stock Price Has Been Volatile............................................................    10
           Potential Loss of Our Nasdaq Listing Could Make it More Difficult to Sell our Shares
              and Affect Our Liquidity..................................................................    10

</TABLE>
                                      -2-
<PAGE>
<TABLE>
<CAPTION>
<S>        <C>                                                                                              <C>

           Stockholders Could Be Adversely Affected By Our Anti-Takeover
              Provisions................................................................................    10
           Our Operations Could Be Affected By Year 2000 Issues.........................................    11
           Stockholders Should Not Expect that We Will Pay Dividends....................................    11
           Special Note Regarding Forward-Looking Statements............................................    11

Where You Can Find More Information.....................................................................    12

Immunomedics:
           Description of Our Business..................................................................    13
           December 1999 Financing......................................................................    15
           Agreement with Financial Advisor.............................................................    16

Use of Proceeds.........................................................................................    16

Selling Stockholders....................................................................................    17

Plan of Distribution:
           Manner of Sales; Broker-Dealer Compensation..................................................    18
           Filing of a Post-Effective Amendment In Certain Instances....................................    19
           Certain Persons May Be Deemed to Be Underwriters.............................................    19
           Regulation M.................................................................................    20
           Indemnification and Other Matters............................................................    20

Legal Matters...........................................................................................    20

Experts.................................................................................................    20

</TABLE>
         You  should  rely  on the  information  incorporated  by  reference  or
provided in this prospectus or any supplement.  We have not authorized anyone to
provide  you  with  different  information.  You  should  not  assume  that  the
information  in this  prospectus  or any  supplement  is accurate as of any date
other than the date on the front of such document.  The selling stockholders are
not making an offer of our shares in any state where the offer is not permitted.


                                      -3-
<PAGE>

                                  RISK FACTORS

         Investing  in our common  stock  involves a high  degree of risk.  As a
result,  you should be able to sustain a complete  loss of your  investment.  In
addition  to the other  information  in this  prospectus,  you should  carefully
consider the following factors before purchasing any of our common stock.

We Have a History of Operating Losses and May Never Become Profitable

         We have had  significant  operating  losses since our formation in 1982
and have not earned a profit since our  inception.  These  operating  losses and
failure to be profitable have been due mainly to the significant amount of money
that we have had to spend on research and development. As of September 30, 1999,
we had an  accumulated  deficit  of  approximately  $101,600,000.  We  expect to
continue to experience  operating losses until such time, if at all, that we are
able to generate  sufficient  revenues from sales of  CEA-Scan(r),  LeukoScan(r)
and/or our other potential products.

We May Not Be Able to Successfully Develop a Market for Our Approved Products

         CEA-Scan and LeukoScan  are the only products  which we are licensed to
market and sell. To date,  we have received only limited  revenues from the sale
of these  products.  We cannot  assure  you that  these  products  or any of our
proposed products will achieve market acceptance or generate significant sales.

We May Not Receive Approval to Sell LeukoScan in the United States in a Timely
Manner

         We have  not yet  received  approval  from the FDA to  market  and sell
LeukoScan in the United States and cannot  assure you as to when, if ever,  that
we will obtain  approval.  In addition,  the FDA could impose  conditions on its
approval,  which could  significantly  affect the  commercial  viability  of the
product  or could  require us to  undertake  significant  additional  studies or
otherwise expend additional  significant funds. If we do not receive approval to
market and sell  LeukoScan in the United States in the near future or if the FDA
imposes  significant  conditions or  restrictions,  our business and  operations
could be significantly and adversely affected.

We May Not Be Able to Bring to Market the Products We Are Currently Developing
or Sustain Their Sales After Approval

         Before any of our  products  that we are  currently  developing  can be
marketed and sold, we must undertake  substantial research and development.  All
new products face a high degree of uncertainty, including the following:

*             We may not receive regulatory approval to perform  human  clinical
              trials for the  products we  currently  have  planned or we may be
              unable to successfully complete our ongoing clinical trials.

*             The results from  preclinical  studies and clinical trials may not
              be  indicative  of results  that will be obtained  in  later-stage
              testing.

*             We may be unable to timely recruit a sufficient number of patients
              for our clinical trials.  Delays in planned patient enrollment may
              result in increased costs and delays.

*             We may be unable to obtain  approval  from the FDA and  comparable
              foreign  authorities because we are unable to demonstrate that the
              product is safe and  effective  for the intended use, or obtaining
              regulatory  approval  may take  significantly  more  time and cost
              significantly more money than we currently anticipate.

                                      -4-
<PAGE>

*             We may discover  that the product has  undesirable  or  unintended
              side effects or other  characteristics  that make it impossible or
              impracticable  for us to continue  development  or which may limit
              the product's commercial use.

*             We do not  expect  that  any new  product  which is  currently  in
              research and  development  will be  commercially  available for at
              least several years.

*             We may be  unable to produce  the product in commercial quantities
              at reasonable cost.

*             We may be unable to successfully  market the product or to find an
              appropriate  corporate partner, if necessary,  to assist us in the
              marketing of the product.

*             The product may not gain satisfactory market acceptance.

*             The product may be  superceded by another  product  commercialized
              for the same indication or may infringe  patents issued to others,
              which would prevent us from marketing and selling the product.

*             After  approval,  the product may be recalled or  withdrawn at any
              time as a result of regulatory issues,  including those concerning
              safety and efficacy.

If we are  unable to  continue  to  develop  products  that we can  successfully
market,  our business,  financial  condition  and results of operations  will be
significantly and adversely affected.

If We Do Not Obtain Additional Capital, We May Be Required to Curtail Our
Operations

         Without a significant increase in product revenues or other infusion of
capital  during our  current  fiscal year which ends June 30,  2000,  we will be
required to significantly reduce our operating expenses, including the amount of
resources  devoted to  marketing  and sales,  product  development  and clinical
trials,  which  could have a  significant  and  adverse  effect on us. We cannot
assure you that any  additional  financing  will be available to us at all or on
terms we find  acceptable  or that the  terms of any  financing  will not  cause
substantial dilution to our existing stockholders.

Our Limited Marketing and Sales Experience and Capability Could Impact Our
Ability to Successfully Sell Our Current Products

         We are  relying,  in  substantial  part,  on our own limited  sales and
marketing  organization to market CEA- Scan and LeukoScan.  We cannot assure you
that we can  successfully  maintain and continue to build our sales force. If we
are unable to continue to build and  maintain  our sales  force,  our  financial
condition and operating results may be significantly and adversely affected.

We May Have to Rely on Partners to Help Us Market and Sell Our Products Under
Development

         The marketing and sale of our proposed  products may be dependent  upon
our entering into  arrangements  with corporate  partners.  We cannot assure you
that we  will  be  successful  in  forming  these  relationships  or that  these
relationships, even if formed, will be successful.

We Could Be Temporarily Unable to Sell Our Products If Our Agreements with our
Distributors Were Terminated

         We  currently  do not have the  resources  to  internally  develop  and
maintain the operating  procedures  required by the FDA and  comparable  foreign
regulatory  authorities to oversee distribution of our products. As a result, we
have entered into  arrangements  with third parties to perform this function for
the foreseeable future. If these agreements are terminated,  we will be required
to enter into arrangements with other government approved third parties in order
to be  able to  distribute  our  products.  We will be  unable  to  continue  to
distribute  our products until an acceptable  alternative  is identified.  If we
were even only temporarily unable to distribute our products, our business could
be significantly and adversely effected.

                                      -5-
<PAGE>

We Could Be Temporarily Unable to Sell Our Products If Our Agreement with our
End Stage Manufacturer Was Terminated

         We rely on a single third party to perform certain  end-stage  portions
of the  manufacturing  process for CEA-Scan and LeukoScan which we are unable or
do not have the  resources  to  perform.  If this  third  party  were to  become
unavailable,  we would be unable to complete the manufacturing  process until we
entered into an agreement with another  qualified  entity.  We cannot assure you
that we will be able to negotiate an agreement  with another  entity on terms we
consider  acceptable,  if at all. Even if we were able to do so, any substantial
delay in our  ability  to  manufacture  our  products  could  significantly  and
adversely affect our operations.

Our Internal Manufacturing Capability May Limit What We Can Sell

         If demand for our approved product increases  significantly,  we cannot
assure you that we will continue to have the capacity to manufacture  commercial
quantities successfully.  In addition, if any of our other products are approved
for  marketing  and sale, we cannot assure you that we will continue to have the
capacity and expertise to manufacture commercial quantities of multiple products
successfully or with acceptable profit margins. If we were even only temporarily
unable to manufacture  sufficient quantities of our products to meet demand, our
business could be significantly and adversely effected.

We May Be Unable to Continue to Use Mouse Fluids for Future Products Which Could
Require Us to Make Expensive and Time Consuming Changes to Our Products in
Development

         CEA-Scan  and  certain of our other  imaging  agents are  derived  from
ascites fluid produced in mice. Regulatory authorities,  particularly in Europe,
have  expressed  concerns  about  the use of mice  fluid for the  production  of
monoclonal  antibodies.  We cannot assure you that regulatory  authorities  will
agree that our quality control  procedures will be adequate for future products.
While we are  continuing  our  development  efforts  to  produce  certain of our
monoclonal  antibodies  using cell culture methods,  this process  constitutes a
substantial  production  change,  which will  require  additional  manufacturing
equipment and new  regulatory  approval.  We cannot assure you that we will have
the resources to acquire the additional manufacturing equipment and resources or
that we will receive the required  regulatory  approval on a timely basis, if at
all.  We also  have  contracted  with a third  party  for  the  development  and
production of certain humanized antibodies,  but we cannot assure you that these
efforts will be successful.

Our Product Development Is Dependent Upon Our Continued Relationship with The
Center for Molecular Medicine and Immunology

         The Center for  Molecular  Medicine and  Immunology,  a  not-for-profit
cancer research center,  performs pilot and pre-clinical trials in product areas
of importance to us. CMMI also conducts basic  research and patient  evaluations
in a number  of areas of  potential  interest  to us.  If CMMI were no longer to
provide these  services,  we would have to make  alternative  arrangements  with
third parties which could  significantly  delay and increase expenses associated
with pre-clinical testing and initial clinical trials.

Certain Potential Conflicts of Interest Exist with The Center for Molecular
Medicine and Immunology Which Could Affect Our Operations

         Dr. David M. Goldenberg,  our Chairman and Chief Executive Officer,  is
the  founder,  President  and a member of the  Board of  Trustees  of CMMI.  Dr.
Goldenberg  devotes  more of his time working for CMMI than for us. In addition,
other key personnel  currently have  responsibilities  both to CMMI and us. As a
result,  the potential for conflict of interest  exists and disputes could arise
over the allocation of research projects and ownership of intellectual  property
rights.

                                      -6-
<PAGE>

We May Not Be Able to Obtain Government Regulatory Approval in a Timely Manner
to Market and Sell Our Products or Approval May Be Withdrawn

         Regulation by governmental authorities in the United States and foreign
countries  is a  significant  factor in the  manufacture  and  marketing  of our
presently marketed and proposed products as well as our research and development
activities.  All of our proposed  products will require  regulatory  approval by
governmental  agencies prior to commercialization  and our products must undergo
rigorous   preclinical  and  clinical  testing  and  other  premarket   approval
procedures by the FDA and comparable  foreign  authorities.  In addition,  since
certain of our potential  products involve the application of new  technologies,
regulatory  approvals  may take longer  than for  products  produced  using more
conventional  methods.  Once we begin  clinical  trials for a new  diagnostic or
therapeutic  product,  it may  take  five to ten  years or more to  receive  the
required  regulatory  approval to commercialize that product and begin to market
it to the  public.  Various  federal  and,  in some cases,  state  statutes  and
regulations  also  govern or  influence  the  manufacturing,  safety,  labeling,
storage,  record keeping and marketing of these products. The lengthy process of
seeking these approvals,  and the subsequent compliance with applicable statutes
and regulations,  will require us to expend substantial resources. If we fail to
obtain or are otherwise substantially delayed in obtaining regulatory approvals,
our business and operations could be significantly and adversely affected.

         In  responding  to  a  new  drug  application,  or a  biologic  license
application,  government  regulators  may  grant  marketing  approvals,  request
additional  information  or  further  research,  or deny the  application  if it
determines  that  the  application  does not  satisfy  its  regulatory  approval
criteria.  Approvals  may not be granted  on a timely  basis,  if at all,  or if
granted  may not cover all the  clinical  indications  for which we are  seeking
approval  or may  contain  significant  limitations  in the  form  of  warnings,
precautions or  contraindications  with respect to conditions of use. Even after
approval,  we may be  required  to recall or  withdraw  a product as a result of
subsequently discovered safety or efficacy concerns.

Our Business Involves the Use of Hazardous Materials

         In  addition to laws and  regulations  enforced by the FDA, we are also
subject to regulation under various other foreign,  federal, state or local laws
and  regulations.  Our research and  development  involves the controlled use of
hazardous materials,  chemicals,  viruses and various radioactive compounds. The
risk of  accidental  contamination  or injury  from  these  materials  cannot be
completely  eliminated.  If an accident occurs,  we could be held liable for any
damages that result and any liability could exceed our resources.

We Must Maintain Our Manufacturing Facilities in Accordance With Government
Regulatory Requirements

         Our  facilities  are subject to  inspection  by the FDA and  comparable
foreign  authorities.  A separate  license is sometimes  required for commercial
manufacture  of any product.  Failure to maintain  these licenses or to meet the
regulatory  inspection  criteria would result in disruption to our manufacturing
processes  and could have a significant  and adverse  effect on our business and
operations.

We Have Agreed to Certain Covenants in our 1999 Financing Which Place
Restrictions on the Operation of our Business

         In  connection  with our  December  1999  financing,  we have agreed to
certain  covenants,  including  covenants that will apply until such time as the
investors in that offering and their affiliates beneficially own less than 5% of
our common  stock.  Among other  things,  we have agreed that  without the prior
consent of the  investors,  we may not sell our  business  to anyone  that is an
affiliate of the company, unless the sale is for consideration at least equal to
(a) the fair  market  value in the event of a sale of assets (as  determined  in
good faith by our board of  directors)  or (b) the then current  market price in
the event of a sale of stock.  As of December  30, 1999,  such  investors in the
aggregate   beneficially  owned  6.2%  of  our  outstanding  common  stock.  For
additional information regarding our December 1999 financing,  see "Immunomedics
- - December 1999 Financing."

                                      -7-
<PAGE>

Changes to Health Care Reimbursement Could Adversely Affect Our Operations

         Our ability to successfully  commercialize  our products will depend in
part on the  extent  to which  reimbursement  for the cost of our  products  and
related  treatment  will be  available  from  government  health  administration
authorities, private health insurers and other organizations.  These third-party
payers are increasingly  challenging the price of medical products and services.
Several proposals have been made that may lead to a government-directed national
health  care  system.  Adoption  of this  type of  system  could  further  limit
reimbursement  for  medical  products,  and we cannot  assure you that  adequate
third-party  coverage  will be available  to enable us to maintain  price levels
sufficient  to  realize  an  appropriate  return on our  investment  in  product
development.  In addition, we also cannot assure you that the U.S. government or
foreign  governments  will not implement a system of price controls.  Any system
might  significantly  and  adversely  affect our ability to market our  products
profitably.

The Loss of Key Employees Could Adversely Affect our Operations

         As a small  biotechnology  company,  we are heavily  dependent upon the
talents  of  Dr.  Goldenberg  and  certain  key  scientific  personnel.  If  Dr.
Goldenberg or any of our other key personnel  leave our employ,  our  operations
could be significantly and adversely affected. In addition, from time to time we
have a need to expand our management and scientific  personnel.  Competition for
qualified  personnel  in the  biotechnology  and  pharmaceutical  industries  is
intense and we cannot assure you that we will be  successful in our  recruitment
efforts.  If we are  unable  to  retain  or,  when  needed,  attract  additional
qualified  personnel,  our operations also could be significantly  and adversely
affected.

We Face Substantial Competition in the Biotechnology Field and May Not Be Able
to Successfully Compete

         The biotechnology  industry is highly competitive,  particularly in the
area of cancer diagnostic and therapeutic  products.  We are likely to encounter
significant  competition  with respect to our  existing  products as well as our
products  currently  under  development.  A number of companies,  including IDEC
Pharmaceuticals,  Genentech,  SmithKline Beecham,  Nycomed Amersham, and Coulter
Pharmaceutical,  are engaged in the  biotechnology  field, and in particular the
development  of  cancer  diagnostic  and  therapeutic  products.  Many of  these
companies  have  significantly   greater  financial,   technical  and  marketing
resources  than  us.  In  addition,  many  of  these  companies  may  have  more
established positions in the pharmaceutical  industry and may be better equipped
than us to develop, refine and market their products.

         We also expect to face increasing  competition  from  universities  and
other  non-profit  research  organizations.   These  institutions  carry  out  a
significant  amount of research and  development in the field of  antibody-based
technology.  These  institutions  are  becoming  increasingly  more aware of the
commercial  value of their  findings and more active in seeking patent and other
proprietary rights, as well as licensing revenues.

Our Products May Be Rendered Obsolete By Rapid Technological Change

         We are  pursuing an area of product  development  in which there is the
potential for extensive technological innovations in relatively short periods of
time. We cannot assure you that our  competitors  will not succeed in developing
products that are safer or more effective than our products. Rapid technological
change or developments  by others may result in our current  products as well as
those in development becoming noncompetitive or obsolete.

                                      -8-
<PAGE>

If We Are Unable to Protect Our Intellectual Property Rights, We Could Lose Our
Competitive Advantage

         Our  commercial  success is highly  dependent  upon  patents  and other
proprietary  rights  that we own or license.  We cannot  assure you that our key
patents  will  not be  invalidated  or  will  provide  us  protection  that  has
commercial  significance.  Litigation  may be  necessary  to protect  our patent
positions,  which could be costly and time consuming.  If any of our key patents
that we own or license are invalidated,  our business may be  significantly  and
adversely  affected.  In addition,  other  companies may  independently  develop
similar  trade  secrets  or  know-how  or obtain  access  to our trade  secrets,
know-how or  proprietary  technology,  which could  significantly  and adversely
affect our business.

Our Products May Infringe Third Party Intellectual Property Rights

         Other companies may have filed  applications  for, or have been issued,
patents  and  obtained  other  proprietary  rights  to  technology  which may be
potentially useful to us. Since we do not have the resources to maintain a staff
whose primary  function is to  investigate  the level of protection  afforded to
third  parties on devices and  components  which we use in our  products,  it is
possible that a third party could  successfully claim that our products infringe
on their intellectual  property rights. If this were to occur, we may be subject
to substantial damages, and we may not be able to obtain appropriate licenses at
a cost we could  afford and we may not have the ability to timely  redesign  our
products.  If we are  required  to pay  damages  or are  unable to obtain  these
rights, our business could be significantly and adversely  affected.  Even if we
are successful in defeating any alleged  infringement  claims,  litigation could
result in a substantial diversion of managerial time and resources,  which could
be better and more fruitfully utilized on other activities.

Our Operations Could Suffer If We Are Unsuccessful in Our Pending Infringement
Claims Concerning Our CEA Antibodies

         We are involved in certain litigation with F.  Hoffmann-LaRoche and its
affiliates concerning the validity our European patents covering the antibody we
use in our CEA-Scan cancer imaging product and our  CEA-Cide(tm)  cancer therapy
product,  as well as the use of highly specific anti-CEA antibodies for a number
of other uses. We have claimed that they have infringed our patent and they have
counter-claimed  seeking to nullify the patents that were issued.  If we receive
an  unfavorable  outcome  in  any  of  these  matters,  our  business  could  be
significantly and adversely affected.

Product Liability Claims in Excess of the Amount of Our Insurance Would
Adversely Affect Our Financial Condition

         The  clinical  testing,  marketing  and  manufacturing  of our products
necessarily  involve  the risk of product  liability.  While we  currently  have
product  liability  insurance,  we cannot  assure that we will be able to obtain
insurance in the future at an acceptable  cost, if at all. If we cannot maintain
our existing or comparable liability  insurance,  our ability to test clinically
and market our products may be significantly impaired.  Moreover, the amount and
scope  of our  insurance  coverage  or  indemnification  arrangements  with  any
distributor or other third party upon which we rely may be inadequate to protect
us in the event of a successful  product liability claim. Any claim in excess of
the amount of any insurance we then had could significantly and adversely affect
our financial condition and operating results.

Our Principal Stockholder Can Influence Most Matters Requiring Approval By Our
Stockholders

         As of  December  31,  1999,  Dr.  Goldenberg,  our  Chairman  and Chief
Executive Officer,  controlled the right to vote over approximately 26.7% of our
common stock (excluding options to purchase 337,500 shares). As a result of this
voting power,  Dr.  Goldenberg may have the ability to determine the election of
all  of  our  directors,   direct  our  policies  and  control  the  outcome  of
substantially all matters which may be put to a vote of our stockholders.

                                      -9-
<PAGE>

Resales of Shares Held By Our Directors and Executive Officers May Lower the
Market Price of Our Common Stock

         As of December 31, 1999, we had a total of 46,260,121  shares of common
stock outstanding,  12,386,456 of which were held by our directors and executive
officers  (excluding options to purchase 940,625 shares).  These shares may only
be resold in limited quantities and only within the limitations  imposed by Rule
144 under the  Securities  Act.  The mere  prospect  that  these  shares  may be
publicly resold could lower the market price for our common stock.

Our Stock Price Has Been Volatile

         We believe  that a variety of factors  have caused the market  price of
our  common  stock to  fluctuate  substantially,  and that it will  continue  to
fluctuate in the future. These factors include:

*        actual or anticipated fluctuations in our operating results;

*        the status of our products in development;

*        new products or technical innovations by us or by our existing or
         potential competitors;

*        the formation or termination of our corporate alliances and
         distribution arrangements;

*        prolonged periods of regulatory review of new products or new uses for
         existing products;

*        determinations regarding our patent applications and those of others;

*        trading strategies occurring in the market place with respect to our
         common stock; and

*        general market conditions and other factors unrelated to us or outside
         our control.

Potential Loss of Our Nasdaq Listing Could Make it More Difficult to Sell our
Shares and Affect Our Liquidity

         If the bid  price of our  common  stock  were to fall  below  $1.00 per
share,  if we were to have less than  $4,000,000  in net tangible  assets (total
assets less total liabilities and goodwill), or if the value of our common stock
held by our stockholders  (other than our directors and executive officers) were
to be less than  $5,000,000,  our common stock could be delisted from The Nasdaq
Stock Market.  If our common stock were delisted from Nasdaq,  trading,  if any,
would thereafter be conducted in the over-the-counter market. This would make it
more difficult for an investor to dispose of, or to obtain  accurate  quotations
for, our common  stock.  Additionally,  it may become more  difficult  for us to
raise funds through the sale of our securities.

Stockholders Could Be Adversely Affected By Our Anti-Takeover Provisions

         Our board of directors has the  authority,  without any further vote by
our stockholders,  to issue up to 10,000,000 shares of preferred stock in one or
more series and to determine the designations, powers, preferences and relative,
participating,  optional or other rights  thereof,  including the dividend rate,
whether dividends are cumulative,  conversion rights,  voting rights, rights and
terms of redemption,  redemption price and liquidation  preference.  Issuance of
preferred  stock could have the effect of delaying,  deterring  or  preventing a
change in control of our company,  or could impose various  procedural and other
requirements  that could make it more  difficult for holders of our common stock
to effect certain corporate actions,  including the ability to replace incumbent
directors  and to  accomplish  transactions  opposed by the  incumbent  board of
directors.  The rights of the  holders of our common  stock would be subject to,
and may be  adversely  affected  by, the rights of the holders of any  preferred
stock that may be issued in the future.

                                      -10-
<PAGE>

Our Operations Could Be Affected By Year 2000 Issues

         Prior to December  31,  1999,  we  completed  a review of our  business
systems,  including our computer systems and manufacturing  equipment,  and sent
written  inquiries  to our  customers,  distributors  and  vendors  as to  their
progress in identifying  and addressing  problems that their systems may face in
correctly  interpreting  and processing date  information  relating to Year 2000
issues. While we have not yet experienced  significant  difficulties relating to
Year 2000 issues, we still could encounter problems with supplier and/or revenue
sources which could affect us. We cannot  accurately  predict the  occurrence or
outcome of any these  problems,  nor can we estimate the dollar  amount of these
problems.  In addition,  we cannot assure you that a failure by a third party to
ensure year 2000 compliance will not significantly and adversely effect us.

Stockholders Should Not Expect That We Will Pay Dividends

         We  have  never  paid  any  dividends  on our  common  stock.  For  the
foreseeable  future,  we expect to  retain  earnings,  if any,  to  finance  the
expansion and development of our business.  Any future payment of dividends will
be within  the  discretion  of our Board of  Directors  and will  depend  upon a
variety of factors, including our earnings, capital requirements,  and operating
and financial condition.

Special Note Regarding Forward-Looking Statements

         We have made  statements  in this  prospectus,  and in the documents we
incorporate  by  reference,  that are  "forward-looking  statements"  within the
meaning of the Securities Act and the Securities  Exchange Act.  Sometimes these
statements contain words like "may," "believe," "expect,"  "continue," "intend,"
"anticipate" or other similar words.  These  statements  could involve known and
unknown risks,  uncertainties and other factors that might  significantly  alter
the actual results suggested by the statements.  In other words, our performance
might be quite different from what the  forward-looking  statements  imply.  The
following  factors,  as well as those  discussed  above in this  "Risk  Factors"
section and in the documents which we incorporate by reference,  could cause our
performance to differ from the implied results:

*        inherent uncertainties accompanying the marketing of CEA-Scan and
         LeukoScan.

*        inherent uncertainties involving new product development and marketing.

*        inability to obtain capital for continued product development and
         commercialization.

*        actions of regulatory authorities concerning product approval.

*        actions of government and private organizations concerning
         reimbursement of medical expenses.

*        impact of competitive products and pricing.

*        results of clinical trials.

*        loss of key employees.

*        changes in general economic and business conditions.

*        changes in industry trends.

                                      -11-
<PAGE>

We have no obligation to release  publicly the result of any revisions to any of
our  "forward-looking  statements" to reflect events or circumstances that occur
after  the  date of this  prospectus  or to  reflect  the  occurrence  of  other
unanticipated events.


                       WHERE YOU CAN FIND MORE INFORMATION

       We publicly file annual,  quarterly and current reports, proxy statements
and other  documents with the SEC. You may read and copy any of these  documents
at the SEC's public reference rooms, which are located at:

                             450 Fifth Street, N.W.
                             Washington, D.C.  20549

                             7 World Trade Center, Suite 1300
                             New York, New York  10048

                             500 West Madison Street, Suite 1400
                             Chicago, Illinois  60661-2511

         Please call the SEC at  1-800-SEC-0330  for further  information on the
public   reference   rooms.   The  SEC   maintains   an   Internet   website  at
http://www.sec.gov where our publicly filed documents may be obtained.

         This prospectus is part of a registration statement filed with the SEC.
Our  registration  statement  contains  more  information  than this  prospectus
regarding  us and our  common  stock  and  includes  supplemental  exhibits  and
schedules.  You can obtain a copy of the registration  statement from the SEC at
the address listed above or from its Internet website.

         The SEC allows us to  "incorporate  by reference"  into this prospectus
the  information we file with it. This means that we are deemed to be disclosing
such information to you by referring you to those documents. This information is
important and should be reviewed.  The information  incorporated by reference is
considered to be part of this  prospectus,  and later  information  that we file
with the SEC will  automatically  update and supercede the  information  in this
prospectus.

         We incorporate by reference into this  prospectus the documents  listed
below and any future filings we make with the SEC under Sections  13(a),  13(c),
14 or 15(d) of the Securities Exchange Act:

*        Annual Report on Form 10-K for the fiscal year ended
         June 30, 1999;

*        Proxy Statement, dated October 18, 1999, with respect to our
         1999 annual meeting of stockholders;

*        Quarterly Report on Form 10-Q for the fiscal quarter
         ended September 30, 1999;

*        Current Report on Form 8-K, dated November 24, 1999; and

*        Description of our common stock contained in Item 1 of our
         Registration Statement on Form 8-A, dated May 7, 1984.

                                      -12-
<PAGE>

         You may  request a copy of these  filings,  at no cost,  by  calling or
writing us at the following address:

                      Immunomedics, Inc.
                      300 American Road
                      Morris Plains, New Jersey 07950
                      (973) 605-8200
                      Attention:  Investor Relations

                                  IMMUNOMEDICS

Description of Our Business

         We are a biopharmaceutical  company,  which develops,  manufactures and
markets  products for the detection and treatment of cancers and other diseases.
These  products,  which are based on our  monoclonal  antibody  technology,  are
designed to deliver  radioisotopes,  chemotherapeutic  agents,  toxins,  dyes or
other substances to a specific disease site or organ system.

         We have received  approval from the respective  regulatory  agencies in
the United States,  the 15 member  countries of the European  Union,  Canada and
certain other countries to market and sell CEA-Scan  (arcitumomab),  our imaging
product for the detection of recurrent and/or metastatic colorectal cancer.

         We  also  have   received   approval  to  market  and  sell   LeukoScan
(sulesomab),  our imaging  product for detection and diagnosis of  osteomyelitis
(bone  infection) in long bones and in diabetic foot ulcer  patients,  in the 15
member  countries of the European Union.  We have filed an application  with the
FDA in the U.S. and the comparable  regulatory  agency in Canada for approval to
market  LeukoScan for the imaging of infection in  osteomyelitis  as well as for
the imaging of infection in acute, atypical  appendicitis.  We have been advised
by the FDA that there are still  deficiencies  with our application  relating to
the  adequacy  of our  data  necessary  to  support  final  approval  for  these
indications.  Despite our confidence  that we were making  progress with FDA and
had adhered to all agreements and guidelines, it is now clear to us that we need
to take whatever steps are available to us to gain a more receptive  audience in
order to gain marketing approval for this product. We can not assure you that we
will receive FDA approval for this product in a timely manner, or at all.

         Marketing, Sales and Distribution

         CEA-Scan  is  marketed  and sold in the U.S.  directly  by our  limited
internal sales force, who are focused on new customers in major medical centers.
Our skilled nuclear medicine  technicians work with this sales force and provide
technical support directly to our customers. We have entered into a distribution
arrangement in the U.S. with Integrated  Commercialization Solutions, a division
of Bergen Brunswig  Corporation,  to provide product support services  including
customer service, order management,  distribution,  invoicing and collection. We
also  have an  agreement  with  Syncor  International,  a  leading  provider  of
radiopharmacy  services,  under which  Syncor  makes  CEA-Scan  available to its
hospital and clinic  accounts  throughout  the U.S.,  supported by our sales and
technical support specialists.

         Our European  operations,  headquartered in Hillegom,  The Netherlands,
include  European  management,   sales  and  marketing,   customer  service  and
invoicing,   collection  and  other  administrative   functions.  We  also  have
established  sales  representation  in most major European  markets.  We service
other markets  through the appointment of local  distributors  who provide sales
and  marketing  support  as  well  as  local  product  distribution.  We have an
agreement with Eli Lilly Deutschland GmbH to package and distribute our products
throughout the 15 member countries of the European Union and other countries.

                                      -13-
<PAGE>

         Imaging Products

         Our imaging  products  involve  injecting a patient with a radioisotope
attached to an  antibody  fragment.  An antibody is a protein  that can find and
attach  itself to a specific  substance  called an antigen.  These  antigens are
present  on tumor  cells,  white  blood  cells that  accumulate  at the sites of
infections,   and  other  disease  entities.   A  radioisotope   attached  to  a
disease-targeting  antibody  is  delivered  to a  disease  site for  imaging.  A
standard  nuclear  medicine  imaging  camera is then used to detect and  display
radioisotope concentrations at various sites of disease.

         The antibody fragment in CEA-Scan is directed against  carcinoembryonic
antigen  (CEA),  which is abundant at the site of  virtually  all cancers of the
colon  or  rectum.  CEA also is  associated  with  many  other  cancers.  We are
conducting phase IV clinical trials to evaluate the product  following  repeated
administration. We also have been performing clinical trials using CEA- Scan for
imaging  lung cancer and breast  cancer.  We are  discussing  the results of our
breast cancer trials with European  regulatory  authorities to determine whether
the data will support the submission of applications for marketing approval.  In
addition,   we  are  continuing  our  efforts  in  developing  cancer  detection
applications with CEA-Scan utilizing  hand-held  radiation-detecting  probes for
use in colorectal cancer surgery.

         LeukoScan is a monoclonal antibody fragment, which seeks out, and binds
to white blood cells (granulocytes)  associated with a potentially wide range of
infectious and inflammatory diseases.

         We are studying the following two other  imaging  products  pursuant to
Investigational  New Drug  applications  that we have filed or plan to file with
the FDA and for which we have ongoing clinical trials:

*        LymphoScan(r), for non-Hodgkin's B-cell lymphomas.


*        AFP-Scan(r), for liver cancer and germ-cell tumors of the ovaries and
         testes.

       Therapeutic Products

         We are applying our expertise in antibody  selection,  modification and
  chemistry to cancer  therapeutics,  using monoclonal  antibodies  labeled with
  therapeutic  radioisotopes  or  conjugated  with  drugs.  We  are  engaged  in
  developing   anti-cancer   products,   principally  with  a  technique  called
  radioimmunotherapy. This technique may deliver radiolabeled therapeutic agents
  to tumor sites more selectively than current radiation  therapy  technologies,
  while minimizing  debilitating side effects. In addition, we are evaluating in
  clinical  trials  the  effects of our  non-radioactive  lymphoma  antibody  in
  non-Hodgkin's lymphoma patients.

       Research Programs

         In addition to concentrating  on our products in clinical  development,
we conduct ongoing research in many related areas. We conduct research  in-house
and in collaboration with The Center for Molecular Medicine and Immunology, also
known as the  Garden  State  Cancer  Center,  and other  academic  and  research
centers.  In March 1999, we entered into a joint venture with Beckman Coulter to
develop  the next  generation  of  cancer  radiotherapeutics  using  bi-specific
antibodies.  We believe our  ongoing  research  efforts  will  identify  new and
improved products and techniques for diagnosing and treating various cancers and
infectious  diseases.  However,  we cannot  assure you that such efforts will be
successful, given the complex issues involved in such diagnosis and treatment.

         Our research  efforts are focused in various  areas related to our core
technology,  including  antibody  engineering  and the  identification  of other
antibody-directed  approaches  to  cancer  therapy.  We  have  made  significant
progress in  humanizing  certain  mouse  antibodies  and have  reengineered  the
humanized antibodies with improved  characteristics.  We are continuing our work
on  selective  coupling  of  therapeutic  site  specific  agents  onto  antibody
fragments  which  will  offer the  advantage  of  loading  multiple  therapeutic
compounds  onto  antibodies  at a particular  disease  site. We also continue to
investigate  pre-targeting,  whereby an antibody is administered first, followed
by a radionuclide or drug administration.

                                      -14-
<PAGE>

         We also  are  continuing  our  research  into  the  use of  alternative
radioisotopes, such as Yttrium-90 in place of Iodine-131. Our research indicates
that  Yttrium-90 is retained by lymphoma cells for longer periods after antibody
metabolism,  and shows greater  efficacy  against  larger  tumors.  We also have
developed a technology using a compound called "DOTA" to tightly bind Yttrium-90
to antibodies.

         In addition,  we are continuing our efforts to scale-up our proprietary
method for technetium-99m radiolabeling of peptides, using single-vial kits.

December 1999 Financing

         On December 14, 1999, we entered into a Common Stock Purchase Agreement
with a small group of private  investors,  each of whom is described  below as a
selling  stockholder.  Under the Common Stock  Purchase  Agreement,  we sold the
investors a total of  2,500,000  shares of our common  stock at a price of $3.00
per share, for gross proceeds of $7,500,000.  We used  substantially  all of the
net  proceeds  from this sale to  redeem a total of 595  shares of our  Series F
Preferred Stock, representing all of the shares of Series F Preferred Stock that
had not been  converted  into common stock.  As a result,  we no longer have any
shares of Series F Preferred Stock outstanding.

         Under the Common Stock  Purchase  Agreement,  we were  required to make
certain promises to the investors. These covenants included the following:

*    We  agreed  to  register  with  the  SEC  the  shares  that  we sold to the
     investors. We promised to file a preliminary prospectus by January 13, 2000
     and thereafter to use our best efforts to have our  registration  statement
     declared  effective  by the  SEC as  expeditiously  as  possible.  We  were
     successful in filing our preliminary  prospectus  prior to the January 13th
     deadline.

*    We agreed to use the net proceeds to purchase the outstanding shares of our
     Series F Preferred Stock, as we have described above.

*    We agreed to refrain from entering into certain  transactions  with persons
     closely  related to our  company,  including  our  executive  officers  and
     directors,  without the prior  approval  of the  investors.  The  investors
     agreed not to withhold their approval unreasonably.

*    We agreed that without the prior consent of the investors,  we may not sell
     our business to anyone that is an affiliate of the company, unless the sale
     is for  consideration  at least equal to (a) the fair  market  value in the
     event of a sale of  assets  (as  determined  in good  faith by our board of
     directors)  or (b) the then current  market price in the event of a sale of
     stock.

*    We  agreed  that we would not amend our  certificate  of  incorporation  or
     by-laws in a manner that would adversely affect the investors,  without the
     prior approval of the investors. The investors agreed not to withhold their
     approval unreasonably.

*    We agreed that if, during a six month period  specified in our Common Stock
     Purchase Agreement,  we issue shares of our common stock at a price of less
     than  $3.00,  we will  issue  additional  shares  of  common  stock  to the
     investors to protect them against dilution without requiring any additional
     payment from the investors. This covenant is subject to certain exceptions;
     among  other  things,  no such  adjustment  will be  required if shares are

                                      -15-
<PAGE>

     issued below that price upon exercise or conversion of options, warrants or
     convertible  securities  outstanding  on December 14, 1999 or in connection
     with corporate partnering transactions, including mergers. Furthermore, the
     calculation  of the  adjustment is to be made on a weighted  average basis.
     Thus, if the number of shares that we issue in a non-exempt  transaction is
     not significant , or if the per share price in a non-exempt  transaction is
     only slightly below the trigger price,  we would not be required to issue a
     substantial number of additional shares to the investors.

*    We agreed that if, during the twelve  months  ending  December 31, 2000, we
     desire to conduct a private placement of our securities through a placement
     agent,  broker-dealer or finder, we will give an entity associated with the
     investors a right of first refusal to serve as the placement  agent in that
     transaction.


These  covenants  will  cease to apply at such time as the  investors  and their
affiliates beneficially own less than 5% of our common stock. As of December 30,
1999, such investors in the aggregate beneficially owned 6.2% of our outstanding
common stock.  Prior to the time, if any, when the  investors'  equity  interest
falls below 5%, the  investors  may waive any one or more of the  covenants  set
forth in our Common Stock Purchase Agreement.

         In  connection   with  the  execution  of  our  Common  Stock  Purchase
Agreement,  our executive  officers and directors have agreed that, subject to a
limited carve-out, they will not sell any shares of their common stock until the
later of June  14,  2000 or the date on which  the SEC  declares  effective  the
registration  statement of which this  prospectus  is a part.  We also agreed to
refrain  from  publicly  offering  or selling our shares for a period of 60 days
after the SEC declares such registration statement effective.
The investors may waive these restrictions at any time.

Agreement with Financial Advisor

         We  have  entered  into an  agreement  with  Sutro  & Co.  Incorporated
pursuant  to which  Sutro may serve as our  financial  advisor  with  respect to
various corporate finance and corporate partnering transactions.  As part of the
consideration  payable  to Sutro  for its  services,  we have  issued to Sutro a
Warrant  entitling  Sutro to purchase up to 75,000  shares of our common  stock.
This  Warrant has an  exercise  price of $6.50 per share and expires in December
2004. The Warrant grants Sutro certain registration rights,  including the right
to include in this  prospectus  the 75,000 shares of common stock  issuable upon
exercise of the Warrant.


                                 USE OF PROCEEDS

         We will not receive any  proceeds  from the sale of our common stock by
the selling  stockholders.  However, we did receive gross proceeds of $7,500,000
from the  issuance of our common stock to the  investors  in the  December  1999
financing.  We used  substantially  all of those  proceeds  to redeem all of the
remaining  outstanding  shares of Series F Preferred Stock and to cover expenses
relating to this financing.



                                      -16-
<PAGE>



                              SELLING STOCKHOLDERS

         The table below presents the following  information:  (1) the number of
shares of common  stock  beneficially  owned by each selling  stockholder  as of
December  31,  1999;  (2) the number of shares that the selling  stockholder  is
offering  under this  prospectus,  and (3) the number of shares that the selling
stockholder  will  beneficially  own  after  the  completion  of this  offering,
assuming that the selling  stockholder  does not acquire any other shares of our
common stock  subsequent  to December  31,  1999.  The number of shares shown as
being beneficially owned by each selling  stockholder after the offering assumes
that the selling  stockholder  has sold all the shares of our common stock which
may be sold pursuant to this prospectus.

         The number and percentage of shares  beneficially owned by each selling
stockholder is determined as of the date of this  prospectus in accordance  with
Rule  13d-3  of  the  Securities  Exchange  Act,  and  the  information  is  not
necessarily indicative of beneficial ownership for any other purpose. Under this
rule,  beneficial  ownership  includes  any  shares  as  to  which  the  selling
stockholder  has sole or shared  voting power or  investment  power and also any
shares which the selling  stockholder has the right to acquire within 60 days of
the date of this prospectus through the exercise of any stock option, warrant or
other right. Unless otherwise  indicated in the footnotes,  each person has sole
voting and  investment  power with respect to the shares  shown as  beneficially
owned.

         None of the selling  stockholders has had a material  relationship with
us  within  the  past  three  years,   other  than  as  described   above  under
"Immunomedics  - December 1999  Financing"  and  "Immunomedics  - Agreement with
Financial Advisor."
<TABLE>
<CAPTION>

<S>                                <C>                  <C>                  <C>
Selling Stockholder                Shares of Common     Shares of Common     Shares of Common
                                   Stock Beneficially   Stock Being          Stock Beneficially
                                   Owned as of          Offered              Owned After the
                                   December 31, 1999                         Offering

Sutro & Company, Inc.                    75,000              75,000                  --

Investors Under the Common
Stock Purchase Agreement

 The Aries Master Fund                1,814,053           1,557,645                 256,408

 The Aries Domestic Fund, L.P.          727,965             626,820                 101,145

 The Aries Domestic Fund II, L.P.        56,814              48,867                   7,947

 Lindsay A. Rosenwald, M.D.           2,765,499(1)          166,667                 365,500(3)

 Mark C. Rogers, M.D.                 2,632,166(2)           33,334                 365,500(3)

 Wayne Rothbaum                          66,667              66,667                  --

- -------------------

</TABLE>
1    Includes  1,814,053  shares of common stock owned by The Aries Master Fund,
     727,965 shares of common stock owned by The Aries  Domestic Fund,  L.P. and
     56,814 shares of common stock owned by The Aries Domestic Fund II, L.P. Dr.
     Rosenwald is the Chairman and sole  stockholder of Paramount  Capital Asset
     Management,  Inc. ("PCAM"),  which serves as the general partner to each of
     The Aries Domestic Fund, L.P., and The Aries Domestic Fund II, L.P., and as
     the investment manager to The Aries Master Fund. As such, Dr. Rosenwald and
     PCAM may be deemed to  beneficially  own the securities held by each of The
     Aries Domestic  Fund,  L.P., The Aries Domestic Fund II, L.P. and The Aries
     Master Fund. Dr. Rosenwald and PCAM disclaim  beneficial  ownership of such
     shares except to the extent of their pecuniary interest therein, if any.

                                      -17-
<PAGE>

2    Includes  1,814,053  shares of common stock owned by The Aries Master Fund,
     727,965 shares of common stock owned by the Aries  Domestic Fund,  L.P. and
     56,814 shares of common stock owned by the Aries Domestic Fund II, L.P. Dr.
     Rogers is the President of PCAM. As such, Dr. Rogers and PCAM may be deemed
     to  beneficially  own the  securities  held by each of Aries Domestic Fund,
     L.P.,  Aries  Domestic Fund II, L.P. and The Aries Master Fund.  Dr. Rogers
     and PCAM disclaim beneficial  ownership of such shares except to the extent
     of their pecuniary interest therein, if any.
3    Represents  256,408  shares of common stock owned by The Aries Master Fund,
     101,145 shares of common stock owned by The Aries  Domestic Fund,  L.P. and
     7,947 shares of common stock owned by The Aries Domestic Fund II, L.P.


                              PLAN OF DISTRIBUTION

Manner of Sales; Broker-Dealer Compensation

         The selling stockholders,  or any successors in interest to the selling
stockholders,  may sell any  shares  of our  common  stock  that  they  acquired
pursuant to our Common stock  Purchase  Agreement or that Sutro may acquire upon
exercise of its Warrant.  The sale of our common stock may be effected in one or
more of the following methods:

     *    ordinary brokers' transactions;

     *    transactions  involving  cross or block  trades  or  otherwise  on the
          Nasdaq National Market;

     *    purchases by brokers,  dealers or underwriters as principal and resale
          by  these   purchasers  for  their  own  accounts   pursuant  to  this
          prospectus;

     *    "at the market" to or through market makers or into an existing market
          for our common stock;

     *    in other  ways not  involving  market  makers or  established  trading
          markets,  including  direct  sales to  purchasers  or  sales  effected
          through agents;

     *    through  transactions in options,  swaps or other derivatives (whether
          exchange-listed or otherwise);

     *    in privately negotiated transactions;

     *    to cover short  sales,  except to the extent that they are  restricted
          contractually from doing so; or

     *    any combination of the foregoing.

The selling  stockholders  also may sell their shares in reliance  upon Rule 144
under the Securities Act at such times as they are eligible to do so.

         We have been  advised by the  selling  stockholders  that they have not
made any  arrangements  for the  distribution  of the  shares of  common  stock.
Brokers,  dealers or underwriters who effect sales for the selling  stockholders
may arrange for other brokers, dealers or underwriters to participate.  Brokers,
dealers  or  underwriters  engaged  by the  selling  stockholders  will  receive
commissions  or  discounts  from them in amounts to be  negotiated  prior to the
sale. These brokers, dealers or underwriters may act as agent or as principals.

                                      -18-
<PAGE>

         From time to time, one or more of the selling  stockholders may pledge,
hypothecate or grant a security  interest in some or all of the shares of common
stock  acquired by them,  and the pledgees,  secured  parties or persons to whom
these  securities  have been pledged  shall,  upon  foreclosure  in the event of
default, be considered a selling stockholders hereunder. In addition, subject to
contractual  limitations,  a selling  stockholder  may, from time to time,  sell
short our common stock. In these instances,  this prospectus may be delivered in
connection with these short sales.

         From time to time one or more of the selling stockholders may transfer,
pledge,  donate or assign shares of our common stock that it acquired to lenders
or others and each of these persons will be considered a selling stockholder for
purposes  of  this  prospectus.  The  number  of  shares  of  our  common  stock
beneficially owned by those selling stockholders who so transfer, pledge, donate
or assign  shares of our common stock will  decrease as and when they take these
actions.  The  plan  of  distribution  for  our  common  stock  by  the  selling
stockholders set forth herein will otherwise remain  unchanged,  except that the
transferees,  pledgees,  donees or other  successors will be considered  selling
stockholders hereunder.

         Subject to contractual  limitations,  a selling  stockholder  may enter
into hedging  transactions with broker-dealers and the broker-dealers may engage
in short sales of our common stock in the course of hedging the  positions  they
assume with this selling stockholder, including in connection with distributions
of our common  stock by these  broker-dealers.  A selling  stockholder  may also
enter into option or other  transactions  with  broker-dealers  that involve the
delivery  of our  common  stock to the  broker-dealers,  who may then  resell or
otherwise  transfer these shares. A selling  stockholder also may loan or pledge
our common stock to a broker-dealer  and the  broker-dealer  may sell our common
stock so loaned or upon a default  may sell or  otherwise  transfer  the pledged
common stock.

Filing of a Post-Effective Amendment In Certain Instances

         If any  selling  stockholder  notifies  us that it has  entered  into a
material arrangement (other than a customary brokerage account agreement) with a
broker or dealer for the sale of shares of common  stock  under this  prospectus
through a block trade, purchase by a broker or dealer or similar transaction, we
will file a post- effective  amendment to the  registration  statement under the
Securities Act. The post-effective amendment will disclose:

     *    The name of each broker-dealer involved in the transaction.

     *    The number of shares of common stock involved.

     *    The price at which those shares of common stock were sold.

     *    The  commissions  paid or  discounts  or  concessions  allowed  to the
          broker-dealer(s).

     *    If  applicable,  that  these  broker-dealer(s)  did  not  conduct  any
          investigation  to verify the information  contained or incorporated by
          reference in this prospectus, as supplemented.

     *    Any other facts material to the transaction.

Certain Persons May Be Deemed to Be Underwriters

         The selling  stockholders and any  broker-dealers who execute sales for
them may be deemed to be "underwriters" within the meaning of the Securities Act
because  of the  number of shares of common  stock to be sold or resold by these
persons or entities or the manner of sale of these shares, or both. If a selling
stockholder  or  any  broker-dealer  or  other  holders  were  determined  to be
underwriters,  any discounts,  concessions or commissions received by them or by
brokers or dealers  acting on their  behalf and any profits  received by them on
the resale of their  shares of common  stock might be deemed to be  underwriting
discounts and commissions under the Securities Act.

                                      -19-
<PAGE>

Regulation M

         We have informed the selling stockholders that Regulation M promulgated
under the Securities  Exchange Act may be applicable to them with respect to any
purchase or sale our common  stock.  In  general,  Rule 102 under  Regulation  M
prohibits  any person  connected  with a  distribution  of our common stock from
directly or indirectly  bidding for, or  purchasing  for any account in which it
has a beneficial interest,  any of our common stock or any right to purchase our
common  stock,  for a period of one business day before and after  completion of
its participation in the distribution.

         During any  distribution  period,  Regulation  M prohibits  the selling
stockholders and any other persons engaged in the distribution  from engaging in
any  stabilizing  bid or  purchasing  our common stock except for the purpose of
preventing  or retarding a decline in the open market price of our common stock.
None of these persons may effect any  stabilizing  transaction to facilitate any
offering  at the market.  As the selling  stockholders  will be  reoffering  and
reselling  our common stock at the market,  Regulation M will prohibit them from
effecting any  stabilizing  transaction  in  contravention  of Regulation M with
respect to our common stock.

Indemnification and Other Matters

         We paid all of the expenses incident to the registration,  offering and
sale of our common  stock by the selling  stockholders  to the public other than
commissions or discounts of underwriters, broker-dealers or agents. We also have
agreed to indemnify the selling stockholders and certain related persons against
certain liabilities,  including liabilities under the Securities Act. Insofar as
indemnification  for  liabilities  arising  under  the  Securities  Act  may  be
permitted to our  directors,  officers  and  controlling  persons,  we have been
advised that in the opinion of the SEC this indemnification agreement is against
public  policy  as  expressed  in  the   Securities   Act  and  is,   therefore,
unenforceable.

         This  offering will  terminate on the date on which all shares  offered
hereby have been sold by the selling stockholders.

                                  LEGAL MATTERS

         Lowenstein Sandler PC will give its opinion on the validity of the
common stock

                                     EXPERTS

         Our consolidated financial statements as of June 30, 1999 and 1998, and
for each of the years in the  three-year  period  ended June 30,  1999 have been
incorporated by reference herein and in the  registration  statement in reliance
upon  the  report  of  KPMG  LLP,  independent   certified  public  accountants,
incorporated by reference herein, and upon the authority of said firm as experts
in accounting and auditing.



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission