BIOTIME INC
S-3, 2000-08-18
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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     As filed with the Securities and Exchange Commission on August 18, 2000

                                               Registration No. ____________
---------------------------------------------------------------------------
---------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                            -------------------------
                                    FORM S-3
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933
                           --------------------------
                                  BIOTIME, INC.
               (Exact name of Registrant as specified in charter)
                ------------------------------------------------

             California                                 94-3127919
   (State or other jurisdiction of                   (I.R.S. Employer
   incorporation or organization)                 Identification Number)

                                        Paul E. Segall, Chief Executive Officer
        935 Pardee Street                             BioTime, Inc.
    Berkeley, California 94710                     935 Pardee Street
       (510) 845-9535                           Berkeley, California 94710
 (Address, including zip code,                         (510) 845-9535
 and telephone  number,including              (Name,  address,  including zip
 area code, of Registrant's                    code, and telephone number,
 principal executive offices)         including area code, of agent for service)

                            -------------------------
Copies of all communications, including all communications sent to the agent for
 service, should be sent to:
                             RICHARD S. SOROKO, ESQ.
               Lippenberger, Thompson, Welch, Soroko & Gilbert LLP
                        250 Montgomery Street, Suite 500
                         San Francisco, California 94104
                               Tel. (415) 421-5300
                            -------------------------

Approximate  date of  commencement  of proposed  sale to the public:  As soon as
practicable after this Registration Statement becomes effective.

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 of 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

                                                         Amount               Proposed              Maximum           Amount of
                                                         to be           Maximum Offering         Aggregate         Registration
   Title of Each Class of Securities to be Registered   Registered          Price Per Unit      Offering Price(1)        Fee(3)
                                                                                       (1)
   --------------------------------------------------   ----------         -----------------    -----------------     -------------
<S>                                                     <C>                   <C>               <C>                 <C>
Warrants to Purchase Common Shares                         622,548                 --                   --                  --
Common Shares, no par value(2)                             622,548               $7.94             $4,943,031.12        $1,304.96
Total Registration Fee..............................................................................................$1,304.96
===============================================================================
<FN>
(1)  Estimated solely for the purpose of calculating the registration fee.
(2) Issuable upon the exercise of the Warrants.
(3) Determined pursuant to Rule 457(c) and (g)
</FN>
</TABLE>
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 said Section 8(a),
may determine.

-------------------------------------------------------------------------------
------------------------------------------------------------------------------=



<PAGE>

                 SUBJECT TO COMPLETION -- DATED AUGUST 18, 2000



PROSPECTUS

                                  BIOTIME, INC.

                              622,548 COMMON SHARES


     All of the shares offered by this  prospectus are being offered for sale by
a shareholder of BioTime, Inc. The selling shareholder may acquire its shares by
exercising certain warrants that it owns, and then it may sell those shares from
time to time on the  American  Stock  Exchange  ("AMEX")  at  prevailing  market
prices, or in privately  negotiated  transactions.  The selling shareholder will
bear all broker-dealer  fees,  commissions,  and discounts payable in connection
with the sale of its shares.

     All of the net proceeds from the sale of the shares will be received by the
selling  shareholder,  and  none of the net  proceeds  will be paid to  BioTime.
However,  we may  receive  the  exercise  price of the  warrants  when  they are
exercised by the selling shareholder prior to the sale of its shares.

     The common shares are  authorized  for trading on the AMEX under the symbol
BTX. The closing  price of the common  shares on the AMEX on August 17, 2000 was
$8.00.


                        --------------------------------
          These securities involve a high degree of risk and should be
           purchased only by persons who can afford the loss of their
                entire investment. See "Risk Factors" on page 5.

                        --------------------------------
          Neither the Securities and Exchange Commission nor any state
           securities commission has approved or disapproved of these
              securities or passed upon the accuracy or adequacy of
   this prospectus. Any representation to the contrary is a criminal offense.





                 The date of this prospectus is August __, 2000


<PAGE>






















                      [This Page Intentionally Left Blank]












                                        2


<PAGE>



                               PROSPECTUS SUMMARY

     The  following  summary  explains  only  some  of the  information  in this
prospectus.  More detailed information and financial statements appear elsewhere
in this  prospectus  or in the  documents  incorporated  by reference  into this
prospectus.  Statements  contained in this  prospectus  that are not  historical
facts may constitute  forward-looking  statements  that are subject to risks and
uncertainties  that could cause actual results to differ  materially  from those
discussed.  Words such as  "expects,"  "may,"  "will,"  "anticipates,""intends,"
"plans,"  "believes,"  "seeks,"  "estimates," and similar  expressions  identify
forward-looking statements. See "Risk Factors."

                                   The Company

     BioTime,  Inc. is a development  stage company  engaged in the research and
development  of  synthetic  solutions  that can be used as blood  plasma  volume
expanders,  blood  replacement  solutions during  hypothermic (low  temperature)
surgery, and organ preservation  solutions.  Plasma volume expanders are used to
treat  blood loss in  surgical or trauma  patients  until blood loss  becomes so
severe that a transfusion  of packed red blood cells or other blood  products is
required.  We are also  developing  a  specially  formulated  hypothermic  blood
substitute solution that would have a similar function and would be used for the
replacement of very large volumes of a patient's  blood during cardiac  surgery,
neurosurgery  and other  surgeries  that  involve  lowering the  patient's  body
temperature to hypothermic levels.

     Our first product,  Hextend(R),  is a physiologically balanced blood plasma
volume  expander,  for the treatment of hypovolemia.  Hypovolemia is a condition
often  associated  with  blood  loss  during  surgery  or from  injury.  Hextend
maintains  circulatory  system fluid volume and oncotic pressure and keeps vital
organs perfused during surgery.  Hextend, approved for large-volume use in major
surgery,  is the only blood plasma volume  expander  that  contains  hetastarch,
buffer,  multiple electrolytes and glucose.  Hextend is designed to compete with
and to  replace  flawed  older  products  such  as  albumin  and  other  colloid
solutions,  as well as  crystalloid  solutions,  that have been used to maintain
fluid volume and blood pressure during surgery.

     Hextend is being sold in the United States by Abbott  Laboratories under an
exclusive  license from us. Abbott also has the right to sell Hextend in Canada,
where an  application  for marketing  approval is pending.  We have retained all
rights to  manufacture,  sell or license Hextend and other products in all other
countries.  Abbott also has a right to obtain  licenses to manufacture  and sell
other BioTime products.

      Because  Hextend  is a  surgical  product,  sales  will be  determined  by
anesthesiologists, surgeons and hospital pharmacists. Abbott's marketing program
for  Hextend  includes,  in  addition  to  advertisements  in medical  journals,
educational  presentations  for its sales force and  physicians  explaining  the
various benefits of using Hextend. Abbott is also working with hospitals to have
Hextend approved for use and added to hospital formularies.

                                        3


<PAGE>



As part of the  marketing  program,  we and  Abbott  are  financing  a number of
limited medical studies  comparing  outcomes of patients  receiving  Hextend and
patients receiving other products during surgery and comparing the relative cost
of using Hextend compared to other products. It will take time to complete these
studies and publish the results.  The outcome of the planned medical studies and
timing of the  publication  of the results could have an effect on the growth of
demand for Hextend and sales by Abbott.

     We are  also  developing  two  other  blood  volume  replacement  products,
PentaLyte,(R)  and HetaCool,TM  that, like  Hextend,(R)  have been formulated to
maintain the patient's  tissue and organ  function by  sustaining  the patient's
fluid volume and physiological balance. Various colloid and crystalloid products
are being  marketed by other  companies  for use in  maintaining  patient  fluid
volume in surgery and trauma care, but the use of those solutions can contribute
to patient morbidity, including conditions such as hypovolemia,  edema, impaired
blood clotting, acidosis, and other biochemical imbalances.  Hextend, PentaLyte,
and HetaCool contain  constituents  that may prevent or reduce the physiological
imbalances that can cause those problems.  Our products do not contain  albumin.
Albumin  produced from human plasma is also currently used as a plasma expander,
but it is expensive  and subject to supply  shortages,  and a recent FDA warning
has cautioned  physicians about the risk of  administering  albumin to seriously
ill patients.

     BioTime  was  incorporated  under  the laws of the State of  California  on
November 30, 1990.  BioTime's  principal office is located at 935 Pardee Street,
Berkeley, California 94710. Its telephone number is (510) 845-9535.

     Hextend(R) and PentaLyte(R) are registered trademarks,  and HetaCoolTM is a
trademark, of BioTime, Inc.

                   Exercise of Warrants and Sale of the Shares

     The  shares  offered  by this  prospectus  may be issued  to our  financial
advisor,  Greenbelt Corp.,  upon the exercise of certain warrants that we issued
as payment for financial advisory services.  Greenbelt Corp. has advised us that
they have requested the  registration  of the shares included in this prospectus
primarily to facilitate  the financing of their  acquisition or holding of those
shares.  Greenbelt  believes  that lenders may require the  registration  of the
shares which would permit  Greenbelt  Corp. to sell its shares from time to time
on the AMEX at prevailing  market prices, or at prices related to the prevailing
market price, or in privately negotiated transactions.  In the event of the sale
of shares,  Greenbelt Corp. will bear all broker-dealer  commissions  payable in
connection with the sale of its shares.  See "Selling  Shareholder" and "Plan of
Distribution" for more information about Greenbelt Corp. and its plan.

                                        4


<PAGE>




                                  RISK FACTORS

     An  investment  in the shares  involves a high  degree of risk.  You should
purchase  the  shares  only if you can  afford to lose your  entire  investment.
Before  deciding to purchase any of the shares offered by this  prospectus,  you
should consider the following  factors which could  materially  adversely affect
the proposed  operations and prospects of BioTime and the value of an investment
in BioTime.  There may be other factors that are not mentioned  here or of which
we are not presently aware that could also affect BioTime's operations.

We May  Not  Succeed  In  Marketing  Our  Products  Due to the  Availability  of
Competing Products

      Our  ability to generate  operating  revenue  depends  upon our success in
developing and marketing our products. There can be no assurance that any of our
products  will be  successfully  marketed  or that  we will  receive  sufficient
revenues from product sales to meet our operating  expenses or to earn a profit.
In this regard,  sales of Hextend to date have not been sufficient to generate a
material amount of royalties or licensing fees.

     o    Hextend and our other plasma expander products will compete with other
          products,   including  albumin  and  other  colloid   solutions,   and
          crystalloid   solutions.   Some  of  these  products,   in  particular
          crystalloid solutions and generic hetastarch in saline solutions,  are
          commonly used in surgery and trauma care and sell at low prices.

     o    In order to compete with other products,  particularly those that sell
          at lower  prices,  BioTime  products  will have to  provide  medically
          significant advantages.

     o    Physicians  and hospitals may be reluctant to try a new product due to
          the  high  degree  of risk  associated  with  the  application  of new
          technologies and products in the field of human medicine.

     o    Competing  products are being manufactured and marketed by established
          pharmaceutical   companies.   For  example,   DuPont   Pharmaceuticals
          presently markets Hespan,  an artificial  plasma volume expander,  and
          Abbott and Baxter  International,  Inc. manufacture and sell a generic
          equivalent of Hespan.

     o    There also is a risk that our  competitors  may succeed in  developing
          safer or more  effective  products  that could render our products and
          technologies obsolete or noncompetitive.

                                        5


<PAGE>




We Will Spend a  Substantial  Amount of Our Capital on Research and  Development
But We Might Not Succeed in Developing Products and Technologies That Are Useful
In Medicine.

     o We are attempting to develop new medical products and technologies.

     o    Many of our  experimental  products  and  technologies  have  not been
          applied  in human  medicine  and have  only  been  used in  laboratory
          studies on animals,  and there can be no assurance that those products
          will  prove  to  be  safe  and   efficacious   in  the  human  medical
          applications for which they were developed.

     o The  experimentation we are doing is costly, time consuming and uncertain
as to its results.

     o    If we are  successful  in  developing  a new  technology  or  product,
          refinement  of the new  technology  or product and  definition  of the
          practical  applications  and  limitations of the technology or product
          may take years and require the expenditure of large sums of money.

If We Do Not Receive FDA and Other Regulatory Approvals We Will Not Be Permitted
To Sell Our Products

     The products that we develop cannot be sold until the FDA and corresponding
foreign regulatory  authorities approve the products for medical use. This means
that:

          o   We will have to conduct expensive and time consuming clinical
              trials of new products;

          o   We will incur the expense and delay inherent in seeking FDA
              approval of new products;

          o   A product that is approved may be subject to restrictions on use;

          o   The FDA can recall or withdraw approval of a product if problems
              arise; and

          o We will face similar regulatory issues in foreign countries.

We Might Not Be Able To Raise Additional Capital Needed To Pay Our Operating
Expenses

     We plan to continue to incur substantial research, product development, and
regulatory  expenses,  and we  will  need to  raise  additional  capital  to pay
operating  expenses  until  we are able to  generate  sufficient  revenues  from
product  sales,  royalties,  and license fees. We have not received  significant
royalties and licensing fees from the sale of Hextend.  At June 30, 2000, we had
cash and cash equivalents of approximately  $2,400,000.  We expect that our cash
on hand will be sufficient to finance our operations for  approximately the next
twelve months,  but we will have to curtail the pace of our product  development
efforts  unless our cash  resources  increase  through a growth in  revenues  or
additional equity  investment.  Although we will continue to seek licensing fees
from  pharmaceutical  companies  for  licenses  to  manufacture  and  market our
products abroad, it is likely

                                        6


<PAGE>



that additional  sales of equity or debt securities will be required to meet our
short-term  capital needs. Sales of additional equity securities could result in
the dilution of the interests of present shareholders. There can be no assurance
that we will be able to raise  additional funds on favorable terms or at all, or
that any funds raised will be  sufficient to permit us to develop and market our
products.  Unless we are able to generate sufficient revenue or raise additional
funds when  needed,  it is likely that we will be unable to continue our planned
activities,  even if we are making  progress  with our research and  development
projects.

If We Are  Unable  To Enter  Into  Additional  Licensing  Or  Manufacturing
Arrangements,  We May Have to Incur Significant Expense To Acquire Manufacturing
Facilities And A Marketing Organization

     We presently do not have adequate  facilities  or resources to  manufacture
our products and the  hydroxyethyl  starches  used in our  products.  We plan to
enter into  arrangements  with  pharmaceutical  companies for the production and
marketing  of our  products.  We have  granted  Abbott an  exclusive  license to
manufacture  and  market  Hextend in the United  States and  Canada.  Although a
number of other  pharmaceutical  companies  have  expressed  their  interest  in
obtaining  licenses to manufacture  and market our products in other  countries,
there can be no assurance  that we will be  successful  making  other  licensing
arrangements.  If  licensing  or  manufacturing  arrangements  cannot be made on
acceptable  terms,  we will have to construct  or acquire our own  manufacturing
facilities and to establish our own marketing  organization,  which would entail
significant expenditures of time and money.

Our Patents May Not Protect Our Products From Competition

      We have patents in the United States,  Israel,  and South Africa, and have
filed patent  applications  in other foreign  countries,  for certain  products,
including Hextend,  HetaCool, and PentaLyte.  No assurance can be given that any
additional patents will be issued to us, or that, if issued,  those patents will
provide  us  with  meaningful  patent  protection,   or  that  others  will  not
successfully  challenge the validity or  enforceability  of any patent issued to
us. The costs  required to uphold the validity and prevent  infringement  of any
patent  issued to us could be  substantial,  and we might not have the resources
available to defend our patent rights.

The Price and Sale of Our Products May Be Limited By Health Insurance Coverage
And Government Regulation

      Success in selling our  products may depend in part on the extent to which
health  insurance   companies,   HMOs,  and  government  health   administration
authorities  such as Medicare and Medicaid will pay for the cost of the products
and related treatment.  Presently, most health insurance plans and HMOs will pay
for Hextend when it is used in a surgical procedure that is covered by the plan.
However,  there can be no assurance  that adequate  health  insurance,  HMO, and
government coverage will be available to permit our other products to be sold at
prices  high  enough for us to  generate a profit.  In some  foreign  countries,
pricing or  profitability  of health  care  products  is  subject to  government
control which may result in low prices for our products.  In the United  States,
there have

                                        7


<PAGE>



been a number of federal and state  proposals  to implement  similar  government
controls, and new proposals are likely to be made in the future.

Our Business Could Be Adversely Affected If We Lose the Services Of The Key
Personnel Upon Whom We Depend

      We  depend  to a  considerable  degree on the  continued  services  of its
executive officers. Although we maintain key man life insurance in the amount of
$1,000,000  on the life of Dr. Paul  Segall,  the loss of the services of any of
the executive  officers could have a material adverse effect on us. In addition,
our success will depend,  among other factors,  upon successful  recruitment and
retention of additional highly skilled and experienced  management and technical
personnel.

Because We Do Not Pay Dividends, Our Stock May Not Be A Suitable Investment For
Anyone Who Need To Earn Dividend Income

     We do not pay cash  dividends  on our common  shares.  For the  foreseeable
future we anticipate that any earnings generated in our business will be used to
finance  the  growth of  BioTime  and will not be paid out as  dividends  to our
shareholders.  This means that our stock may not be a  suitable  investment  for
anyone who needs to earn income from their investments.

Because We Are a Drug Development Company, The Price Of Our Stock May Rise And
Fall Rapidly

     The market price of BioTime  shares,  like that of the common stock of many
biotechnology  companies,  has been highly volatile. The price of BioTime shares
may rise  rapidly in response to certain  events,  such as the  commencement  of
clinical  trials of an  experimental  new drug, even though the outcome of those
trials and the likelihood of ultimate FDA approval remains uncertain. Similarly,
prices of BioTime  shares may fall rapidly in response to certain events such as
unfavorable  results  of  clinical  trials or a delay or  failure  to obtain FDA
approval.  The failure of our  earnings  to meet  analysts'  expectations  could
result in a significant  rapid decline in the market price of our common shares.
In  addition,  the stock market has  experienced  and  continues  to  experience
extreme  price and volume  fluctuations  which have affected the market price of
the equity securities of many biotechnology  companies and which have often been
unrelated  to  the  operating  performance  of  these  companies.  Broad  market
fluctuations,  as  well  as  general  economic  and  political  conditions,  may
adversely affect the market price of the common shares.

                                        8


<PAGE>



                                   THE COMPANY

          We are developing synthetic solutions that can be used as blood plasma
volume  expanders,  blood  replacement  solutions  during  "hypothermic"  or low
temperature surgery, and organ preservation  solutions.  Plasma volume expanders
are used to treat  blood loss in surgical  or trauma  patients  until blood loss
becomes so severe  that a  transfusion  of packed red blood cells or other blood
products is required. We are also developing a specially formulated  hypothermic
blood replacement solution that would be used for the replacement of a patient's
circulating  blood  volume  during  cardiac  surgery,   neurosurgery  and  other
surgeries that involve lowering the patient's body temperature.

     Our first  product,  Hextend,  is a  physiologically  balanced blood plasma
volume  expander,  for the treatment of hypovolemia.  Hypovolemia is a condition
often  associated  with  blood  loss  during  surgery  or from  injury.  Hextend
maintains  circulatory  system fluid volume and oncotic pressure and keeps vital
organs perfused during surgery.  Hextend, approved for large-volume use in major
surgery,  is the only blood plasma volume  expander  that  contains  hetastarch,
buffer,  multiple electrolytes and glucose.  Hextend is designed to compete with
and to  replace  flawed  older  products  such  as  albumin  and  other  colloid
solutions,  as well as  crystalloid  solutions,  that have been used to maintain
fluid  volume and blood  pressure  during  surgery.  Hextend is also  completely
sterile to avoid risk of infection. Most health insurance reimbursements and HMO
coverage now include the cost of Hextend used in surgical procedures.

     Hextend  is being sold in the United  States by Abbott  under an  exclusive
license from us.  Abbott also has the right to sell Hextend in Canada,  where an
application  for marketing  approval is pending.  We have retained all rights to
manufacture,  sell or license Hextend and other products in all other countries.
Abbott also has a right to obtain licenses to manufacture and sell other BioTime
products.

      Because  Hextend  is a  surgical  product,  sales  will be  determined  by
anesthesiologists, surgeons and hospital pharmacists. Abbott's marketing program
for  Hextend  includes,  in  addition  to  advertisements  in medical  journals,
educational  presentations  for its sales force and  physicians  explaining  the
various benefits of using Hextend. Abbott is also working with hospitals to have
Hextend approved for use and added to hospital formularies.

     As part of the marketing  program,  we and Abbott are financing a number of
limited medical studies  comparing  outcomes of patients  receiving  Hextend and
patients receiving other products during surgery and comparing the relative cost
of using Hextend compared to other products. It will take time to complete these
studies and publish the results.  The outcome of the planned medical studies and
timing of the  publication  of the results could have an effect on the growth of
demand for Hextend and sales by Abbott.

     We are  also  developing  two  other  blood  volume  replacement  products,
PentaLyte and HetaCool that, like Hextend,  have been formulated to maintain the
patient's tissue and organ function by sustaining the patient's fluid volume and
physiological  balance.  Various  colloid  and  crystalloid  products  are being
marketed by other  companies  for use in  maintaining  patient  fluid  volume in
surgery  and trauma  care,  but the use of those  solutions  can  contribute  to
patient morbidity,  including  conditions such as hypovolemia,  edema,  impaired
blood clotting, acidosis, and other biochemical

                                        9


<PAGE>



imbalances.  Hextend,  PentaLyte,  and HetaCool  contain  constituents  that may
prevent or reduce the  physiological  imbalances  that can cause those problems.
Our products do not contain albumin.  Albumin produced from human plasma is also
currently used as a plasma  expander,  but it is expensive and subject to supply
shortages,  and a recent FDA warning has cautioned  physicians about the risk of
administering albumin to seriously ill patients.

     We  intend  to enter  global  markets  through  licensing  agreements  with
overseas  pharmaceutical  companies.  By licensing its products abroad,  we will
avoid the capital costs and delays inherent in acquiring or establishing its own
pharmaceutical   manufacturing  facilities  and  establishing  an  international
marketing organization. A number of pharmaceutical companies in Europe, Asia and
other  markets  around the world have  expressed  their  interest  in  obtaining
licenses to manufacture and market our products. Our management is continuing to
meet  with  representatives  of  interested  companies.   In  addition,  we  are
discussing an arrangement  with a leading  producer of the  hydroxyethyl  starch
used in  Hextend  through  which we would  obtain a  source  of  supply  of that
ingredient and assistance in regulatory  matters for approval of Hextend for the
European market.

     We are also pursuing a global clinical trial strategy, the goal of which is
to permit us to obtain  regulatory  approval  for our  products  as quickly  and
economically as practicable.  For example,  the United States Phase III clinical
trials of Hextend  involved  120  patients  and were  completed  in less than 12
months. Although regulatory requirements vary from country to country, we may be
able to file applications for foreign regulatory  approval of its products based
upon the results of the United States clinical trials. Our application to market
Hextend in Canada had been found  acceptable for review as a New Drug Submission
by the  Canadian  Health  Protection  Branch  (HPB),  and we  are  now  awaiting
completion  of  HPB's  review  of that  application.  Regulatory  approvals  for
countries  that are  members of the  European  Union may be  obtained  through a
mutual recognition process. We have determined that several member nations would
accept an application based upon the United States clinical trials. If approvals
based  upon those  trials  can be  obtained  in the  requisite  number of member
nations, then we would be permitted to market Hextend in all 16 member nations.

     We are  conducting  a Phase I clinical  trial of PentaLyte  involving  nine
subjects.  Upon completion of this small safety study, we plan to test PentaLyte
as a  cardio-pulmonary  by-pass pump priming  solution and for the  treatment of
hypovolemia in surgery. PentaLyte contains a lower molecular weight hydroxyethyl
starch than Hextend, and is more quickly metabolized.  PentaLyte is designed for
use when short lasting volume expansion is desirable.

     In order  to  commence  clinical  trials  for  regulatory  approval  of new
products,  such as  HetaCool,  or new  therapeutic  uses of Hextend,  it will be
necessary  for us to prepare and file with the FDA an  Investigational  New Drug
Application  ("IND") or an  amendment  to expand the present IND for  additional
Hextend studies.  Filings with foreign  regulatory  agencies will be required to
commence clinical trials overseas.

     The cost of preparing  regulatory filings and conducting clinical trials is
not presently determinable, but could be substantial. It may be necessary for us
to obtain  additional funds in order to complete  clinical trials that may begin
for new  products  or for new  uses of  Hextend.  We plan to  negotiate  product
licensing  and  marketing   agreements  that  require  overseas   licensees  and
distributors

                                       10


<PAGE>



of our products to bear regulatory approval and clinical trial costs for their
territories.

     In addition to developing  clinical trial programs,  we plan to continue to
provide funding for our laboratory  testing  programs at selected  universities,
medical  schools and hospitals for the purpose of developing  additional uses of
Hextend, PentaLyte, HetaCool, and other new products, but the amount of research
that will be  conducted  at those  institutions  will depend upon our  financial
status. Because our research and development expenses,  clinical trial expenses,
and  production  and  marketing  expenses will be charged  against  earnings for
financial  reporting  purposes,  management  expects that losses from operations
will continue to be incurred for the foreseeable future.

                                 USE OF PROCEEDS

     The shares are being offered for sale by the selling  shareholder.  BioTime
will not receive any of the net  proceeds  from the sale of the shares.  We will
receive the exercise price of certain warrants owned by the selling  shareholder
when  those  warrants  are  exercised.  If all of the  warrants  covered by this
prospectus are exercised,  we would receive $1,834,956.16.  However, there is no
assurance  that all of the  warrants  will be  exercised.  In this  regard,  the
exercise  price of  warrants to  purchase  77,818 of the shares  covered by this
prospectus is currently more than the market price of BioTime stock. We will use
the proceeds we receive  from the  exercise of the warrants for general  working
capital purposes,  including  research and development  expenses and general and
administrative expenses.

                               SELLING SHAREHOLDER

     The  following  table  shows  the  number of  shares  owned by the  selling
shareholder  and its affiliates  prior to this  offering,  the maximum number of
shares that may be sold by the selling shareholder through this prospectus,  and
the amount and  percentage of the  outstanding  shares that will be owned by the
selling shareholder and its affiliates after the completion of this offering.
<TABLE>
<CAPTION>
                                                                             Shares Owned             Percent
Name                             Shares Owned          Shares Offered        After Offering        After Offering
----                             ------------          --------------        --------------        --------------
<S>                           <C>                    <C>                    <C>                       <C>
Greenbelt Corp.                  1,420,642 (1)          622,548(2)             798,094                    6.7%
  277 Park Avenue, 27th Floor
  New York, New York 10172
<FN>
(1)  Includes  933,825 shares issuable upon the exercise of certain warrants owned beneficially by Greenbelt Corp.,
     67,230 shares owned by Greenbelt Corp, and 7,500 shares that Greenbelt Corp. may acquire within 60 days under
     its financial advisory agreement.  Alfred D. Kingsley and Gary K. Duberstein control Greenbelt Corp. and may be
     deemed to beneficially own the warrant shares that Greenbelt Corp. beneficially owns.  Includes 90,750 shares
     owned by Greenway Partners, L.P.  Greenhouse Partners, L.P. is the general partner of Greenway Partners, L.P.
     and Mr. Kingsley and Mr. Duberstein are the general partners of Greenhouse Partners, L.P.  Greenhouse Partners,
     L.P., Mr. Kingsley and Mr. Duberstein may be deemed to beneficially own the shares that Greenway Partners, L.P.
     beneficially owns.  Includes 310,442 shares owned solely by Mr. Kingsley, as to which Mr. Duberstein disclaims

                                       11


<PAGE>



     beneficial ownership.  Includes 10,895 shares owned solely by Mr. Duberstein, as to which Mr. Kingsley disclaims
     beneficial ownership.

(2)  All of the shares offered for sale may be acquired and sold by Greenbelt Corp. upon the exercise of certain warrants.
</FN>
</TABLE>

     The shares that are being  offered for sale by Greenbelt  Corp.  are shares
that they may acquire upon the exercise of certain  warrants  that they received
from us as  compensation  for  financial  advisory  services  under an agreement
signed during  September  1995.  Under our agreement  with Greenbelt  Corp.,  we
initially issued to them warrants to purchase 311,276 shares at a price of $1.93
per share,  and we agreed to issue  additional  warrants  to  purchase  up to an
additional  622,549  shares at a price  equal to the  greater of (a) 150% of the
average market price of the shares during the three months prior to issuance and
(b) $2 per  share.  The  additional  warrants  were  issued  in equal  quarterly
installments  over a two year period,  beginning  October 15, 1995. The exercise
price and number of shares for which the warrants  may be exercised  are subject
to  adjustment to prevent  dilution in the event of a stock split,  combination,
stock dividend,  reclassification of shares,  sale of assets,  merger or similar
transaction. The warrants will expire five years after the date they were issued
and may not be exercised after that date. The number of shares issuable upon the
exercise of the warrants  covered by this prospectus,  the exercise prices,  and
the expiration dates of the warrants are as follows:
<TABLE>
<CAPTION>

     Number of Warrant Shares                    Exercise Price Per Share                    Expiration Date
     ------------------------                    ------------------------                    ----------------
<S>        <C>                                       <C>                                   <C>
              389,094                                   $ 1.93                                October 15, 2000
               77,818                                   $ 1.93                                January 15, 2001
               77,818                                   $ 2.35                                April 15, 2001
               77,818                                   $ 9.65                                July 15, 2001
</TABLE>

     In addition to the warrants  covered by this  prospectus,  Greenbelt  Corp.
holds  additional  warrants  entitling  them to purchase an aggregate of 311,277
shares at prices  ranging from $9.42 to $15.74.  Those  warrants  will expire on
various dates from October 15, 2001 through July 15, 2002.

     The number of shares and exercise prices shown above have been adjusted for
our subscription  rights  distribution during January 1997 and February 1999 and
the payment of a stock dividend during October 1997.

     Our agreement with  Greenbelt  Corp.  required us, upon request,  to file a
registration  statement to register their warrants and the underlying shares for
sale under the Act and applicable  state  securities or "Blue Sky" laws. We will
bear the  expenses of  registration,  other than any  underwriting  discounts or
commissions payable to broker-dealers that may be incurred by Greenbelt Corp. in
connection  with a sale of the warrants or shares.  We are not obligated to file
more than two such registration  statements,  other than registration statements
on Form S-3.  Greenbelt Corp. also is entitled to include warrants and shares in
any  registration  statement that we may file to register  other  securities for
sale under the Act.

     During  April  1998,  we entered  into a new  financial  advisory  services
agreement with Greenbelt Corp. The new agreement provides for an initial payment
of $90,000  followed by an  advisory  fee of $15,000 per month that will be paid
quarterly. We agreed to reimburse Greenbelt Corp. for all

                                       12


<PAGE>



reasonable  out-of-pocket expenses incurred in connection with its engagement as
financial  advisor,   and  to  indemnify   Greenbelt  Corp.  and  its  officers,
affiliates,  employees,  agents,  assignees,  and  controlling  person  from any
liabilities  arising out of or in  connection  with actions  taken on our behalf
under the  agreement.  The  agreement  has been  renewed  for a period of twelve
months ending March 31, 2001, but instead of cash  compensation  Greenbelt Corp.
will receive 30,000 common shares in four quarterly installments of 7,500 shares
each.  We have  agreed to  register  those  shares for sale under the Act,  upon
request,  on  substantially  the  same  terms  as  the  registration  provisions
pertaining to the warrants under our original agreement with Greenbelt Corp.

                              PLAN OF DISTRIBUTION

     Greenbelt Corp. has advised us that they have requested the registration of
the shares included in this prospectus  primarily to facilitate the financing of
their  acquisition  or holding of those shares  through margin loans under which
the shares have been or will be pledged as  collateral.  Under  standard  margin
loan arrangements,  if a selling shareholder were to fail to maintain sufficient
margin  loan  collateral  in  their  stock  brokerage  account,  in the  form of
securities,  cash,  or  a  combination  of  securities  and  cash,  the  lending
broker-dealer  would have the right to sell the  pledged  shares to satisfy  its
margin loan. Greenbelt believes that lenders may require the registration of the
shares,  which will permit  Greenbelt Corp. to sell its shares from time to time
on the AMEX at prevailing  market prices, or at prices related to the prevailing
market price, or in privately negotiated transactions.  In the event of the sale
of shares,  Greenbelt Corp. will bear all broker-dealer  commissions  payable in
connection with the sale of its shares.

     Greenbelt  Corp. may obtain margin loan financing from  broker-dealers  for
the purpose of  obtaining  the funds  necessary to exercise the warrants or hold
the shares. Greenbelt Corp. may sell the shares in conjunction with the exercise
of the warrants or may hold the shares for investment purposes and then sell the
shares at a later date.  Greenbelt Corp. also may enter into  arrangements  with
broker-dealers  under which it may sell warrants to the  broker-dealers who will
then  exercise  the  warrants  for their  own  accounts  and sell the  shares as
principals.  If Greenbelt Corp. sells any warrants to  broker-dealers,  it would
expect  to  receive a price  based  upon the  market  price of the  shares  then
prevailing on the AMEX,  less the exercise price of the warrants sold and less a
discount or selling concession.

     Broker-dealers  who acquire shares from  Greenbelt  Corp. as principals may
resell  those  shares  from  time  to  time in  transactions  on the  AMEX or in
negotiated  transactions,  at prevailing market prices or at negotiated  prices,
and may receive  usual and  customary  commissions  from the  purchasers  of the
shares.

     Greenbelt  Corp. has advised us that during the time that it may be engaged
in a  distribution  of their shares it will (a) not engage in any  stabilization
activity in  connection  with BioTime  securities,  (b) cause to be furnished to
each broker  through whom its shares may be offered the number of copies of this
prospectus  required by the broker,  and (c) not bid for or purchase any BioTime
securities  or rights to acquire  BioTime  securities,  or attempt to induce any
person do so, other than as permitted under the Securities Exchange Act of 1934,
as amended. Greenbelt Corp. and any

                                       13


<PAGE>



broker-dealers  who  participate in the sale of their shares may be deemed to be
"underwriters"  as defined in the Act. Any commissions  paid or any discounts or
concessions  allowed to any broker-  dealers in connection  with the sale of the
shares,  and any  profits  received  on the  resale of any shares  purchased  by
broker-dealers  as principals,  may be deemed to be  underwriting  discounts and
commissions under the Act.

                                  LEGAL MATTERS

     The validity of the rights, common shares, and warrants will be passed upon
for  BioTime  by  Lippenberger,  Thompson,  Welch,  Soroko &  Gilbert  LLP,  San
Francisco,  California.  A member of  Lippenberger,  Thompson,  Welch,  Soroko &
Gilbert LLP owns options to purchase 15,000 common shares.

                                     EXPERTS

     The financial statements of BioTime,  Inc. as of June 30, 1997 and 1998 and
December 31, 1998 and 1999, and for each of the three fiscal years in the period
ended  December  31, 1999  incorporated  by reference  in this  prospectus  from
BioTime's  Annual Report on Form 10-K for the year ended  December 31, 1999 have
been audited by Deloitte & Touche LLP, independent  auditors, as stated in their
report  (which  expresses an  unqualified  opinion and  includes an  explanatory
paragraph related to the development stage of BioTime's operations) incorporated
herein by reference,  and have been so  incorporated in reliance upon the report
of such firm given upon their authority as experts in accounting and auditing.

                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

     BioTime's  Form 10-K for the fiscal  year ended  December  31, 1999 and all
other reports filed by BioTime  pursuant to Sections 13(a),  13(c), 14, or 15(d)
of the Securities Exchange Act of 1934, as amended,  since the end of the fiscal
year  covered  by such Form 10-K and prior to the  termination  of the  offering
covered by this  prospectus  are hereby  incorporated  into this  prospectus  by
reference.  A  description  of the common  shares  contained  in a  Registration
Statement  on Form 8-A  filed  under the  Securities  Exchange  Act of 1934,  as
amended,  is also incorporated  into this prospectus by reference.  BioTime will
provide without charge to each person, including any beneficial owner, to whom a
prospectus is delivered,  upon written or oral request of such person, a copy of
any and all of the information  that has been  incorporated by reference but not
delivered with this prospectus.  Such requests may be addressed to the Secretary
of BioTime at 935 Pardee Street,  Berkeley,  California 94710; Telephone:  (510)
845-9535.

     BioTime is  subject to the  informational  requirements  of the  Securities
Exchange Act of 1934, as amended,  and in accordance  therewith files quarterly,
annual,  and current reports and proxy statements and other information with the
Securities and Exchange  Commission.  The public may read and copy any materials
BioTime files with Securities and Exchange Commission at the

                                       14


<PAGE>



     Commission's Public Reference Room at 450 Fifth Street,  N.W.,  Washington,
D.C.  20549.  The public may obtain  information  on the operation of the Public
Reference Room by calling the Commission at 1-800-SEC-0330.

     The Commission maintains an Internet site that contains reports,  proxy and
information  statements,  and  other  information  regarding  issuers  that file
electronically   with   the   Commission.   The   address   of   such   site  is
http://www.sec.gov.

                             ADDITIONAL INFORMATION

     BioTime has filed with the  Securities and Exchange  Commission,  450 Fifth
Street, N.W.,  Washington,  D.C. a registration  statement on Form S-3 under the
Securities  Act of 1933,  as amended,  for the  registration  of the  securities
offered hereby.  This prospectus,  which is part of the registration  statement,
does not contain all of the information contained in the registration statement.
For  further  information  with  respect to BioTime and the  securities  offered
hereby, reference is made to the registration statement,  including the exhibits
thereto, which may be inspected, without charge, at the Office of the Securities
and Exchange Commission,  or copies of which may be obtained from the Commission
in Washington,  D.C. upon payment of the requisite fees. Statements contained in
this prospectus as to the content of any contract or other document  referred to
are not necessarily  complete. In each instance reference is made to the copy of
the  contract  or  other  document  filed  as an  exhibit  to  the  registration
statement,  and each such statement is qualified in all respects by reference to
the exhibit.

                                       15


<PAGE>





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

---------------------
No dealer,  salesperson or other person has been  authorized in connection  with
this offering to give any information or to make any representations  other than
those contained in this Prospectus. This Prospectus does not constitute an offer
or a solicitation  in any  jurisdiction  to any person to whom it is unlawful to
make such an offer or solicitation.  Neither the delivery of this Prospectus nor
any sale made hereunder shall,  under any  circumstances,  create an implication
that  there has been no  change in the  circumstances  of  BioTime  or the facts
herein set forth since the date hereof.

                                                     TABLE OF CONTENTS

Prospectus Summary...........................................................3
Risk Factors.................................................................5
The Company..................................................................9
Use of Proceeds.............................................................11
Selling Shareholder.........................................................11
Plan of Distribution........................................................13
Legal Matters...............................................................14
Experts.....................................................................14
Incorporation of Certain Information14
   by Reference.............................................................14
Additional Information......................................................15




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



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

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


                                                       BIOTIME, INC.


                                                   622,548 Common Shares

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

                                                        PROSPECTUS

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

                                                      August __, 2000


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

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




<PAGE>




                                     PART II

INFORMATION NOT REQUIRED IN PROSPECTUS


Item 14.  Other Expenses of Issuance and Distribution

          The  estimated  expenses  of the  Registrant  in  connection  with the
issuance and  distribution  of the  securities  being  registered  hereby are as
follows:

Registration Fee-Securities and Exchange Commission...................$1,285.24
Accounting Fees...............................................................*
Legal Fees....................................................................*
Miscellaneous Expenses...................................................___*__
                                                                         ------
                Total..................................................$    *
                                                                         ======
-----------------
*To be filed by amendment.

Item 15.  Indemnification of Directors and Officers.

          Section   317   of   the   California    Corporations   Code   permits
indemnification   of  directors,   officers,   employees  and  other  agents  of
corporations  under certain  conditions and subject to certain  limitations.  In
addition,  Section  204(a)(10)  of the  California  Corporations  Code permits a
corporation to provide,  in its articles of incorporation,  that directors shall
not have liability to the corporation or its  shareholders  for monetary damages
for breach of fiduciary duty, subject to certain prescribed exceptions.  Article
Four of the Articles of Incorporation of the Registrant  contains provisions for
the  indemnification of directors,  officers,  employees and other agents within
the limitations  permitted by Section 317 and for the limitation on the personal
liability  of  directors  permitted  by  Section  204(b)(10),   subject  to  the
exceptions required thereby.

                                      II-1

<PAGE>



Item 16.  Exhibits and Financial Statement Schedules.

Exhibit

Numbers           Description

4.1       Warrant Agreement+

4.2       Form of Warrant+

5         Opinion of Counsel+

23        Consent of Deloitte & Touche LLP+


+ Filed herewith.

Item 17.  Undertakings.

          Insofar  as   indemnification   for  liabilities   arising  under  the
Securities Act of 1933 may be permitted to directors,  officers, and controlling
persons of the Registrant  pursuant to the foregoing  provisions,  or otherwise,
the  Registrant  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 payment by the Registrant
of expenses incurred or paid by a director, officer or controlling person of the
Registrant  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 Registrant 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 Act and will be  governed by final
adjudication of such issue.

     The undersigned registrant hereby undertakes:

     (1) To file  during  any  period  in which  offers  or sales  are  made,  a
post-effective amendment to this registration statement:

         (i)  To include any prospectus required by section 10(a)(3) of the
              Securities Act of 1933;

         (ii) To reflect in the prospectus any facts or events arising after the
effective date of the registration  statement (or the most recent post-effective
amendment  thereof)  which,   individually  or  in  the  aggregate  represent  a
fundamental change in the information set forth in the registration statement;

                                      II-2

<PAGE>



         (iii) To include any material  information  with respect to the plan of
distribution  not  previously  disclosed  in the  registration  statement or any
material change to such information in the registration statement.

     (2) That for the purpose of determining  any liability under the Securities
Act of  1933,  each  post-  effective  amendment  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.

     (3) To remove from registration by means of a post-effective  amendment any
of the securities being registered which remain unsold at the termination of the
offering.

     The  undersigned  registrant  hereby  undertakes  that, for the purposes of
determining  any liability  under the Securities Act of 1922, each filing of the
registrant's  annual  report  pursuant to section  13(a) or 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 undersigned undertakes that:

     (1) For the purposes of determining  any liability under the Securities Act
of 1933, the  information  omitted from the form of prospectus  filed as part of
this  registration  statement in reliance upon Rule 430A and contained in a form
of  prospectus  filed by the  registrant  pursuant to Rule  424(b)(1)  or (4) or
497(h) under the Securities Act shall be deemed to be part of this  registration
statement as of the time it was declared effective.

     (2) For the purposes of determining  any liability under the Securities Act
of 1933, each post- effective amendment that contains a form of prospectus 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 bona fide offering thereof.

                                      II-3

<PAGE>



                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment to the Registration Statement to be signed on its
behalf by the undersigned,  thereunto duly authorized,  in the City of Berkeley,
State of California on August 16, 2000.

                                                BIOTIME, INC.


                                       By  Paul Segall
                                           ------------------------------
                                           Paul Segall, Chief Executive Officer

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

<TABLE>
<CAPTION>

         Signature                          Title                                       Date
         ---------                          -----                                       ----
<S>                              <C>                                                 <C>
/s/Paul E. Segall
----------------------
Paul E. Segall, Ph.D.               Chairman, Chief Executive Officer and               August 16, 2000
                                    Director (Principal Executive Officer)

/s/Ronald S. Barkin
----------------------
Ronald S. Barkin                    President and Director                              August 16, 2000

/s/Harold D. Waitz
----------------------
Harold D. Waitz, Ph.D.              Vice President and Director                         August 16, 2000

/s/Hal Sternberg
----------------------
Hal Sternberg, Ph.D.                Vice President and Director                         August 16, 2000

/s/Victoria Bellport
----------------------
Victoria Bellport                   Chief Financial Officer and                         August 16, 2000
                                    Director (Principal Financial and
                                    Accounting Officer)

/s/Judith Segall
----------------------
Judith Segall                       Vice President, Corporate Secretary                 August 16, 2000
                                    and Director

----------------------
Jeffrey B. Nickel                   Director                                            August__, 2000

----------------------
Milton H. Dresner                   Director                                            August__, 2000

</TABLE>
                                      II-4

<PAGE>



                                  EXHIBIT INDEX

Exhibit
Numbers           Description
--------          -----------
4.1           Warrant Agreement+

4.2           Form of Warrant +

5             Opinion of Counsel+

23            Consent of Deloitte & Touche LLP+


+ Filed herewith.






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