IMMUNOMEDICS INC
S-3/A, 2000-03-03
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
Previous: FRANKLIN TELECOMMUNICATIONS CORP, S-3, 2000-03-03
Next: FRANKLIN FINANCIAL SERVICES CORP /PA/, 8-K, 2000-03-03




                           Registration No. 333-31178

      As filed with the Securities and Exchange Commission on March 3, 2000

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                 AMENDMENT NO. 1
                                       TO
                                    FORM S-3

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

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

                  Delaware                              61-1009366
        (State or other jurisdiction of              (I.R.S. Employer
        incorporation or organization)               Identification No.)

                                300 American Road
                         Morris Plains, New Jersey 07950
                                 (973) 605-8200
                   (Address, including zip code, and telephone
                         number, including area code, of
                    registrant's principal executive offices)
                             Dr. David M. Goldenberg
                      Chairman and Chief Executive Officer
                               Immunomedics, Inc.
                                300 American Road
                         Morris Plains, New Jersey 07950
                                 (973) 605-8200
 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)
                          Copies of all communications,
                          including all communications
                              sent to the agent for
                           service, should be sent to:
                            Peter H. Ehrenberg, Esq.
                              Lowenstein Sandler PC
                              65 Livingston Avenue
                           Roseland, New Jersey 10024
                                 (973) 597-2500

Approximate  date of commencement  of proposed sale to the public:  From time to
time after the effective date of this Registration Statement.

If the only securities  being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box: [ ]

If any of the  securities  being  registered on this Form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box: [x]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the  Securities  Act  registration  statement  number of the  earlier  effective
registration statement for the same offering. [ ]

If this Form is a  post-effective  amendment filed pursuant to Rule 462(c) under
the  Securities  Act,  check  the  following  box and  list the  Securities  Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

If delivery  of the  prospectus  is  expected  to be made  pursuant to Rule 434,
please check the following box: [ ]

<TABLE>
<CAPTION>
                                      CALCULATION OF REGISTRATION FEE

                                                            Proposed Maximum      Proposed Maximum
Title of Each Class of           Amount of Shares to be    Offering Price Per        Aggregate            Amount of
Securities to be Registered         Registered (1)              Share(2)          Offering Price(3)    Registration Fee
- ---------------------------         --------------              --------          -----------------    ----------------
<S>                             <C>                        <C>                    <C>                  <C>
Common Stock, $.01 par
value per share                      2,325,000             $  26.0625             $ 60,595,312.50           $ 15,998 (3)

</TABLE>

(1) Represents shares of common stock available for resale by purchasers under a
Common Stock Purchase Agreement, dated as of February 14, 2000, by and among the
Registrant and such purchasers.

<PAGE>

(2) Pursuant to Rule 457(c),  the proposed  maximum offering price per share and
proposed maximum  aggregate  offering price have been calculated on the basis of
the average of the high and low sale prices of the registrant's  common stock as
reported on The Nasdaq National Market on February 24, 2000.

(3) Previously paid.

The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective on such date as the  Commission,  acting pursuant to Section 8(a), may
determine.

                                      -2-
<PAGE>

The  information in this Prospectus is subject to completion and may be changed.
The selling  stockholders  may not sell these  securities until the registration
statement  filed with the  Securities  and  Exchange  Commission  (of which this
Prospectus  is a part) is  effective.  This  Prospectus  is not an offer to sell
these securities, and is not soliciting an offer to buy these securities, in any
state where such offer or sale is not permitted

PROSPECTUS

                               IMMUNOMEDICS, INC.

                        2,325,000 Shares of Common Stock

The Issuer

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

The Selling Stockholders

         The  selling  stockholders  are  offering to sell  2,325,000  shares of
common  stock that we issued to them on February  14, 2000  pursuant to a Common
Stock Purchase Agreement.  Additional  information concerning our agreement with
the selling stockholders is set forth under the caption "Immunomedics - February
2000 Financing."

Trading Symbol

         Nasdaq National Market -  "IMMU"

         The  closing  sale  price of a share of our  common  stock on Nasdaq on
March 2, 2000 was $38.00.

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.

                                 March ___, 2000

<PAGE>


                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
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 Require and 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.......................................................7
           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....................8
           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...........................................................9
           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....................................10

                                      -2-
<PAGE>
           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
           Stockholders Could Be Adversely Affected By Our Anti-Takeover
              Provisions......................................................10
           Stockholders Should Not Expect that We Will Pay Dividends..........11
           Special Note Regarding Forward-Looking Statements..................11

Where You Can Find More Information...........................................11

Immunomedics:
           Description of Our Business........................................12
           February 2000 Financing; Covenants.................................15

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...................20
           Regulation M.......................................................20
           Indemnification and Other Matters..................................20

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

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

         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 December 31, 1999,
we had an accumulated  deficit of  approximately  $104.1  million.  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 superseded  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 Require and Do Not Obtain Additional Capital, We May Be Required to
Curtail Our Operations

         Our February 2000 financing has provided us with needed capital.  While
we believe that we have now  satisfied our immediate  capital  requirements,  we
cannot assure you that additional  capital may not be required in the future. If
we require  additional  capital and are unable to obtain capital on satisfactory
terms,  we may 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.

                                      -5-
<PAGE>

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.

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 affected.

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.

                                      -6-
<PAGE>

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.

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,  a government  regulator  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.

                                      -7-
<PAGE>

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 unless 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 such
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.  See "February  2000  Financing;  Covenants."  As of February 18,
2000, such investors in the aggregate beneficially owned 6.4% of our outstanding
common stock.

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.

                                      -8-
<PAGE>

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.

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.

                                      -9-
<PAGE>

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

         As of  February  18,  2000,  Dr.  Goldenberg,  our  Chairman  and Chief
Executive Officer,  controlled the right to vote over approximately 24.9% 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.

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

         As of February 18, 2000, we had a total of 48,897,746  shares of common
stock outstanding,  12,290,456 of which were held by our directors and executive
officers  (excluding options to purchase 865,000 shares).  Absent  registration,
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.  One of our  directors,  Dr. Morton  Coleman,  is eligible to sell shares
pursuant to this prospectus. See "Selling Stockholders."

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.

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>

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 Private Securities Litigation Reform Act of 1995. Sometimes these
statements contain words like "may," "believe," "expect,"  "continue," "intend,"
"anticipate,"  "plan,"  "seek" and  "estimate"  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.

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.

                                      -11-
<PAGE>

                       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 supersede 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  Reports on Form 10-Q for the fiscal quarters ended September 30,
     1999 and December 31, 1999;

*    Current Reports on Form 8-K, dated November 24, 1999 and February 23, 2000;
     and

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

         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

                                      -12-
<PAGE>

                                  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 the 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.

         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.

                                      -13-
<PAGE>

         LeukoScan is a monoclonal antibody fragment that 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 and the effects of our  non-radioactive  CEA
  antibody in colorectal and breast cancer 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 as a
bi-specific fusion protein, followed by a radionuclide or drug administration.

         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.

                                      -14-
<PAGE>

February 2000 Financing; Covenants

         On February 14, 2000, 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, on February 16,
2000, we sold the investors a total of 2,325,000 shares of our common stock at a
price of $16.00 per share, for gross proceeds of $37.2 million. We intend to use
the net  proceeds  for  continuing  research  and  development  for our existing
product line, for future clinical  trials,  for general working capital purposes
and in the operation of our business.

         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  within ten
          business days after the closing and thereafter to use our best efforts
          to have  our  registration  statement  declared  effective  by the SEC
          within 120 after the date of our filing.  We were successful in filing
          our preliminary prospectus prior to the ten business day deadline.

     *    We agreed to use the net proceeds in the manner described above.

         In a financing  that we  completed  in  December  1999 with a different
group of  purchasers,  we made certain  additional  covenants.  Those  covenants
included the following:

     *    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 in the December  financing  agreed not to withhold their
          approval unreasonably.

     *    We agreed that without the prior  consent of the  investors,  we would
          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 in the December
          financing agreed not to withhold their approval unreasonably.

     *    We agreed that if, during a six month period specified in our December
          1999 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 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.

                                      -15-
<PAGE>

     *    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 in the December 1999  financing a right
          of first refusal to serve as the placement agent in that  transaction.
          This right was waived in connection with our February 2000 financing.

         These  covenants  will cease to apply at such time as the  investors in
the December 1999 financing and their  affiliates  beneficially own less than 5%
of our common stock.  As of February 18, 2000,  such  investors in the aggregate
beneficially  owned 6.4% of our outstanding  common stock. Prior to the time, if
ever,  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 December 1999 Common
Stock  Purchase  Agreement,  our executive  officers and directors  agreed that,
subject to a limited  carve-out,  they would not sell any shares of their common
stock until June 14, 2000. We also agreed to refrain from  publicly  offering or
selling our shares  before March 28, 2000.  The  investors in the December  1999
financing  may  waive  these  restrictions  at any  time and  have  waived  such
restrictions  for  purposes of enabling us to file this  prospectus.  One of our
directors,  Dr.  Morton  Coleman,  is eligible  to sell shares  pursuant to this
prospectus. See "Selling Stockholders."

                                 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 $37.2
million from the  issuance of our common stock to the  investors in the February
2000  financing.  We estimate  that the net proceeds  from that issuance will be
approximately  $35.5  million.  We intend to use the net proceeds for continuing
research and  development  for our existing  product line,  for future  clinical
trials,  for  general  working  capital  purposes  and in the  operation  of our
business.


                                      -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
February 18, 2000,  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 February  18,  2000.  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.  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 - February 2000 Financing; Covenants", subject to the following:

     *    Dr. Morton Coleman is a member of our Board of Directors; and

     *    the Aires funds were also  purchasers in our December  1999  financing
          and thus are entitled to the benefits of the covenants  that we agreed
          to at that time.

<TABLE>
<CAPTION>
                                              Shares of Common Stock
                                               Beneficially Owned as                                Shares of Common Stock
                                                        of              Shares of Common Stock     Beneficially Owned After
Selling Stockholder                               March 1 , 2000             Being Offered               the Offering
- -------------------                               --------------             -------------               ------------

<S>                                               <C>                        <C>                         <C>
DCF Life Sciences Fund Ltd..............               255,100                      25,000                   230,100
DCF Partners Ltd........................               505,000                      75,000                   430,000
Dresdner RCM Biotechnology Fund.........                69,400                      69,400                         -
Dresdner RCM Global Health Care Fund....
Dresdner RCM Small Cap Fund.............               197,100                     118,200                    78,900
Franklin Biotechnology Discovery Fund...
Janus Global Life Sciences Fund.........             2,204,030                     749,375                 1,454,655
Janus Aspen Global Life Sciences Fund...
JMG Capital Partners, L.P...............                75,000                      75,000                         -
Moore Global Investments, Ltd...........               255,900                     160,000                    95,900
Remington Investment Strategies, L.P....
Palantir Partners LP....................               145,000                      50,000                    95,000
Palantir Investments, LDC...............               135,000                      50,000                    85,000
Beacon Funds, L.P.......................                75,000                      75,000                         -
Perceptive Life Sciences L.P............               165,125                      75,000                    90,125
Westcliff Master Fund L.P...............                40,530                      40,530                         -
Westcliff Partners, L.P.................                33,470                      33,470                         -
</TABLE>

- -17-
<PAGE>

<TABLE>
<S>                                               <C>                        <C>                         <C>
Westcliff Partners SA L.P...............                 8,300                       8,300                         -
Westcliff Long/Short L.P................                 9,940                       9,940                         -
Westcliff Small Cap Fund L.P............                 7,760                       7,760                         -
Samuel Lupin, M.D. .....................                20,900                      17,000                     3,900
Arnold M. Lupin IRA.....................                32,000                      25,000                     7,000
Lupin Foundation........................                15,000                      15,000                         -
Israel Sontag...........................                10,500                      10,000                       500
Robert D. Marcus, M.D...................                10,000                      10,000                         -
E. Ralph Lupin, M.D.....................                 3,000                       3,000                         -
Fagey Lupin Fischman....................                10,000                      10,000                         -
Sergio Schabelman, M.D..................                 5,000                       5,000                         -
William Buck Taylor, M.D. ..............                 5,000                       5,000                         -
Morton Coleman, M.D.....................               104,000                     104,000                         -
Robert M. Gelfand, M.D..................                30,000                      20,000                    10,000
Mark Pasmentier, M.D....................                 6,000                       6,000                         -
Mark Goldblatt..........................                40,000                      20,000                    20,000
Aires Domestic Fund, L.P................               834,447                      30,482                   803,965
Aires Domestic Fund II, L.P.............               145,960                       5,139                   140,821
The Aires Master Fund...................             1,996,161                      64,379                 1,931,782
</TABLE>


                              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 February 14, 2000 Common Stock Purchase  Agreement.  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.

                                      -18-
<PAGE>

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.

         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.

                                      -19-
<PAGE>

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.

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.

                                      -20-
<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

The following is an itemized  statement of the estimated amounts of all expenses
payable by us in connection with the registration of the Shares:

SEC registration fee......................................               $15,998
Legal fees and expenses...................................                10,000
Accounting fees and expenses..............................                 2,500
Miscellaneous expenses....................................                 1,502
                                                                       ---------
           Total..........................................               $30,000
           =====
         .........
Item 15.  Indemnification of Directors and Officers.

         The Delaware  General  Corporation  Law provides,  in  substance,  that
Delaware  corporations shall have the power, under specified  circumstances,  to
indemnify  their  directors,  officers,  employees and agents in connection with
actions  or suits by or in the right of the  corporation,  by reason of the fact
that they were or are such directors,  officers,  employees and agents,  against
expenses  (including  attorneys'  fees) and,  in the case of  actions,  suits or
proceedings brought by third parties, against judgments,  fines and amounts paid
in  settlement  actually and  reasonably  incurred in any such  action,  suit or
proceeding.

         The Company's  Certificate  of  Incorporation  provides that a director
shall not be personally  liable to the Company or its  stockholders for monetary
damages for breach of fiduciary duty as a director  except for liability (i) for
breach of the  director's  duty of loyalty to the  Company or its  stockholders,
(ii) for acts or  omissions  not in good  faith  or  which  involve  intentional
misconduct  or a  knowing  violation  of law,  (iii)  under  Section  174 of the
Delaware  General  Corporation  Law, or (iv) for any transaction  from which the
director derived an improper personal benefit. The Company's Bylaws also provide
that the Company may indemnify its directors, officers and legal representatives
to the fullest extent  permitted by Delaware law against all awards and expenses
(including attorneys' fees).

Item 16.   Exhibits.

Exhibit No.             Description

   4.1*   -   Common Stock Purchase Agreement, dated as of February 14, 2000, by
              and among the Company and the investors named therein.

   5.1*   -   Opinion of Lowenstein Sandler PC

  23.1*   -   Consent of KPMG LLP.

  23.2    -   Consent of Lowenstein Sandler PC
              (included in their opinion filed as Exhibit 5.1).

  24.1*   -   Power of Attorney.

- ----------------
*Previously filed.

<PAGE>

Item 17.  Undertakings.

         The Company hereby  undertakes  that,  for purposes of determining  any
liability under the Securities Act of 1933, each filing of the Company's  annual
report pursuant to section 13(a) or section 15(d) of the Securities Exchange Act
of 1934 (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the registration  statement shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         The Company undertakes that it will:

          (1)  File, during any period in which it offers or sells securities, a
               post-effective amendment to this registration statement to:

               (i)  Include any prospectus  required by section  10(a)(3) of the
                    Securities Act;

               (ii) Reflect  in  the  prospectus  any  facts  or  events  which,
                    individually or together,  represent a fundamental change in
                    the information in the registration statement.

               Notwithstanding the foregoing, any increase or decrease in volume
               of  securities  offered (if the total dollar value of  securities
               offered  would not  exceed  that  which was  registered)  and any
               deviation  from  the low or  high  end of the  estimated  maximum
               offering  range may be reflected in the form of prospectus  filed
               with the Commission pursuant to Rule 424(b) if, in the aggregate,
               the  changes  in volume  and price  represent  no more than a 20%
               change in the maximum  aggregate  offering price set forth in the
               "Calculation  of   Registration   Fee"  table  in  the  effective
               registration statement.

               (iii)Include any  material  information  with respect to the plan
                    of distribution not previously disclosed in the registration
                    statement or any material changes to such information in the
                    registration statement,

               provided,  however,  that the  Company  does not need to give the
               statements  in  paragraph  (1)(i) and (1)(ii) if the  information
               required  in  a  post-effective   amendment  is  incorporated  by
               reference  from  periodic  reports filed by the Company under the
               Exchange Act.

          (2)  For  determining  liability  under the Securities Act, treat each
               post-effective  amendment as a new registration  statement of the
               securities  offered,  and the offering of the  securities at that
               time to be the initial bona fide offering.

          (3)  File a post-effective  amendment to remove from  registration any
               of the securities that remain unsold at the end of the offering.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 (the "Act") may be permitted to directors,  officers and controlling
persons of the Company pursuant to the foregoing provisions,  or otherwise,  the
Company has been  advised  that in the opinion of the  Securities  and  Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against  such  liabilities  (other  than the  payment by the Company of expenses
incurred or paid by a director,  officer or controlling person of the Company in
the  successful  defense of any action,  suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered,  the Company  will,  unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as  expressed  in the  Securities  Act and will be  governed by the final
adjudication of such issue.

<PAGE>



                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant  certifies that it has reasonable  grounds to believe it meets all of
the requirements for filing on Form S-3 and has duly caused this Amendment No. 1
to its  Registration  Statement  to be signed on its behalf by the  undersigned,
thereunto duly authorized, in the City of Morris Plains, State of New Jersey, on
March 2, 2000.

                                               IMMUNOMEDICS, INC.


                                                By: /s/ David M. Goldenberg
                                                   ------------------------
                                                   David M. Goldenberg
                                                   Chairman of the Board and
                                                   Chief Executive Officer
                                                   (Principal Executive Officer)

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the dates indicated.

Dated:

March 2, 2000                                      /s/ David M. Goldenberg
                                                   -----------------------
                                                   David M. Goldenberg, Chairman
                                                   of the Board, Chief Executive
                                                   Officer and a Director
                                                   (Principal Executive Officer)


March 2, 2000                                      /s/ Morton Coleman*
                                                   -------------------
                                                   Morton Coleman, Director


                                                   -------------------------
                                                   Marvin E. Jaffe, Director


March 2, 2000                                      /s/ Richard R. Pivirotto*
                                                   -------------------------
                                                   Richard R. Pivirotto,
                                                   Director


March 2, 2000                                      /s/ Richard C. Williams*
                                                   ------------------------
                                                   Richard C. Williams, Director


March 2, 2000                                      /s/ Shailesh R. Asher*
                                                   ----------------------
                                                   Shailesh R. Asher, Controller
                                                   and Acting Chief Financial
                                                   Officer (Principal Financial
                                                   and Accounting Officer)

*/s/ David M. Goldenberg
- ------------------------
David M. Goldenberg
Attorney-in-Fact


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