SERAGEN INC
SC 13D, 1996-06-24
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                                                Exhibit Index is on page 12

                                            SECURITIES AND EXCHANGE COMMISSION
                                                  Washington, D.C. 20549

                                                       Schedule 13D

                                   Under the Securities Exchange Act of 1934
                                                (Amendment No.          )*



                                                       SERAGEN, INC.
_________________________________________________________________
                                                     (Name of Issuer)


                                               COMMON STOCK, $0.01 PAR VALUE
_________________________________________________________________
                                              (Title of Class of Securities)


                                                         81747410
                                              ______________________________
                                                      (CUSIP Number)

                                     Henry Brachfeld, 175 Bloor Street East, 
            South Tower, 6th Floor, Toronto, Ontario M4W 3R8 (416) 929-1626
 
                            (Name, Address and Telephone Number of Person
                          Authorized to Receive Notices and Communications)
                                                    May 29, 1996
                                       _______________________________
                                       (Date of Event which Requires Filing
                                                    of this Statement)


If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the following
box  .

Check the following box if a fee is being paid with the statement X.  (A fee
is not required only if the reporting person:  (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.) 
(See Rule 13d-7.)

Note:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are
to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

                                           (Continued on the following page(s))
                                                    Page 1 of 31 Pages

                                                            13D
CUSIP No.        81747410         Page    2   of   31            Pages
                       



1         NAME OF REPORTING PERSON
          S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                            P.R.I.F., L.P.


2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                      (a)       



3         SEC USE ONLY





4         SOURCE OF FUNDS*

                            00, WC


5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(d) or 2(e)
                                       



6         CITIZENSHIP OR PLACE OF ORGANIZATION

                   Province of Ontario, Canada

      NUMBER OF    7        SOLE VOTING POWER

       SHARES      

    BENEFICIALLY   8        SHARED VOTING POWER
                           921,212 (direct) (assuming conversion of all
                           Convertible Preferred Shares at $4.125)
      OWNED BY
                   9        SOLE DISPOSITIVE POWER
        EACH
                            
      REPORTING
                 10         SHARED DISPOSITIVE POWER
       PERSON
                            921,212 (direct) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
        WITH


11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          921,212 (direct) (assuming conversion of all Convertible Preferred
          Shares at $4.125)


12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES*
                                       



13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          5.2% (direct) (assuming conversion of all Convertible Preferred
          Shares at $4.125)



14        TYPE OF REPORTING PERSON*

          PN                                                 

                                *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                                            13D
CUSIP No.        81747410   Page    3 of   31  Pages
                  ________________________    


1       NAME OF REPORTING PERSON
          S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                   Lillian Brachfeld


2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                         (a)       



3         SEC USE ONLY





4         SOURCE OF FUNDS*

                   Not applicable


5         CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEMS 2(d) or 2(e)
                                       



6         CITIZENSHIP OR PLACE OF ORGANIZATION

                   Canadian

NUMBER OF          7        SOLE VOTING POWER

       SHARES               

    BENEFICIALLY   8        SHARED VOTING POWER

                            921,212 (indirect) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
      OWNED BY
                  9         SOLE DISPOSITIVE POWER
        EACH
                            
      REPORTING
                 10         SHARED DISPOSITIVE POWER
       PERSON
                            921,212 (indirect) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
        WITH


11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           921,212 (indirect) (assuming conversion of all Convertible
           Preferred Shares at $4.125)


12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES*
                                                



13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          5.2% (indirect) (assuming conversion of all Convertible Preferred
          Shares at $4.125)



14         TYPE OF REPORTING PERSON*

                   IN                                        

                            *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                                            13D
          CUSIP No.        81747410   Page    4of   31   Pages
                       ________      _________


         1         NAME OF REPORTING PERSON
                   S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                            Henry Brachfeld


         2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a)       



         3         SEC USE ONLY





         4         SOURCE OF FUNDS*

                            Not applicable


         5         CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                   PURSUANT TO ITEMS 2(d) or 2(e)
                                                



         6         CITIZENSHIP OR PLACE OF ORGANIZATION

                            United States

      NUMBER OF   7         SOLE VOTING POWER

       SHARES               

    BENEFICIALLY  8         SHARED VOTING POWER

                            921,212 (indirect) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
      OWNED BY
                  9         SOLE DISPOSITIVE POWER
        EACH
                            
      REPORTING
                 10         SHARED DISPOSITIVE POWER
       PERSON
                            921,212 (indirect) (assuming conversion of all 
                            Convertible Preferred Shares at $4.125)
        WITH


        11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                   921,212 (indirect) (assuming conversion of all Convertible
                   Preferred Shares at $4.125)


        12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                   CERTAIN SHARES*
                                                



        13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                   5.2% (indirect) (assuming conversion of all Convertible
                   Preferred Shares at $4.125)



        14         TYPE OF REPORTING PERSON*

                   IN                                        

                              *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                                            13D
CUSIP No.        81747410   Page    5 of   31  Pages
                        ________      ________



         1         NAME OF REPORTING PERSON
                   S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                            HB and Co., Inc.


         2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                      (a)       



         3         SEC USE ONLY





         4         SOURCE OF FUNDS*

                            Not applicable


         5         CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                   PURSUANT TO ITEMS 2(d) or 2(e)
                                                



         6         CITIZENSHIP OR PLACE OF ORGANIZATION

                            Province of Ontario, Canada

      NUMBER OF   7         SOLE VOTING POWER

       SHARES               

    BENEFICIALLY  8         SHARED VOTING POWER

                            921,212 (indirect) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
      OWNED BY
                  9         SOLE DISPOSITIVE POWER
        EACH
                            
      REPORTING
                 10         SHARED DISPOSITIVE POWER
       PERSON
                            921,212 (indirect) (assuming conversion of all
                            Convertible Preferred Shares at $4.125)
        WITH


11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           921,212 (indirect) (assuming conversion of all Convertible
           Preferred Shares at $4.125)


12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES*
                                                



13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           5.2% (indirect) (assuming conversion of all Convertible Preferred
           Shares at $4.125)


14
                   TYPE OF REPORTING PERSON*

                            CO                               

                                  *SEE INSTRUCTIONS BEFORE FILLING OUT!
Item 1.   Security and Issuer
          This statement relates to the shares of common stock, $0.01 par
value per share, (the "Shares") of Seragen, Inc. (the "Issuer"), whose
principal executive offices are located at 97 South Street, Hopkinton,
Massachusetts 01748.

Item 2.   Identity and Background

          This statement is being filed by the following persons
(collectively, the "Reporting Persons"): P.R.I.F., L.P. ("PRIF"), HB
and Co., Inc. ("HB"), Lillian Brachfeld and Henry Brachfeld.

          PRIF is a limited partnership formed under the Limited
Partnerships Act (Ontario), with its principal business and
office address at 175 Bloor Street East, South Tower, 6th Floor,
Toronto, Ontario, M4W 3R8.  The principal business of PRIF is investing
in securities of publicly-traded corporations and other marketable
securities.  The sole general partner of PRIF is HB.

           HB is a corporation incorporated under the laws of the
Province of Ontario, Canada, with its principal business and
office address at 175 Bloor Street East, South Tower, 6th Floor,
Toronto, Ontario, M4W 3R8.  HB is a private corporation all of the shares
of which are beneficially and directly owned by Lillian Brachfeld.
The principal business of HB is to carry on business as an investor in
publicly-traded corporations and other marketable securities.
Henry Brachfeld is the sole director of HB and is the President and
Secretary of HB.  There are no other executive officers of HB.

            Lillian Brachfeld, a Canadian citizen and resident, is a
private investor whose business address is 175 Bloor Street
East, South Tower, 6th Floor, Toronto, Ontario M4W 3R8.

             Henry Brachfeld, an American citizen and a Canadian
resident, is a private investor whose business address is 175 Bloor
Street East, South Tower, 6th Floor, Toronto, Ontario M4W 3R8.

             During the last five years, none of HB, PRIF,
Lillian Brachfeld or Henry Brachfeld have been (i) convicted in
a criminal proceeding (excluding traffic violations or
similar misdemeanours), or (ii) a party to a civil proceeding of
a judicial or administrative body of competent jurisdiction and as
a result of such proceeding was or is subject to a
judgment, decree or final order enjoining future violations of,
or prohibiting or mandating activities subject to, Federal or State
securities laws or fighting any violation with respect to
such laws.

Item 3.            Source and Amount of Funds or Other Consideration

                   On May 29, 1996 PRIF subscribed for 3,800 convertible
preferred shares (the "Convertible Preferred Shares") of the Issuer,
at a subscription price of U.S. $1,000 per share, for a total
consideration of U.S. $3,800,000 for the Convertible Preferred Shares.
On June 3, 1996, PRIF borrowed U.S. $2,000,000 from Refco F/X Associates
Ltd. ("REFCO"), a Bermuda corporation.  The loan from REFCO was secured by
the deposit of 2,500 of the Convertible Preferred Shares of the Issuer.
The remainder of the U.S. $3,800,000 purchase price for the Convertible
Preferred Share, U.S. $1,800,000, came from funds of PRIF.

Item 4.            Purpose of Transaction

      PRIF acquired direct beneficial ownership of the Convertible
Preferred Shares of the Issuer for investment purposes.  The Reporting
Persons believe that the Convertible Preferred Shares of the Issuer
represents an attractive investment.  The Convertible Preferred
Shares are convertible into Shares of the Issuer at the lesser of (a)
73% of the five day average closing bid price for the Shares for the five
business days immediately preceding the conversion date, as reported by
NASDAQ, or (b) the closing bid price on NASDAQ for the Shares for May 28,
1996, being $4.125 per Share.  The Convertible Preferred Shares are
subject to mandatory conversion into Shares of the Issuer no later than
18 months from the date of the issuance. 

       None of the Reporting Persons have any plans or proposals which
relate to or would result in any of the transactions described in
subparagraphs (a) through (j) of Item 4 of Schedule 13D; however, each
of the Reporting Persons reserves the right to change its plans
or intentions at any time and to take all actions they may deem
appropriate to maximize the investment.  In particular, depending upon
prevailing market conditions, economic conditions and other factors,
the Reporting Persons may acquire Shares or securities convertible into
Shares or sell all or part of the interest in the Issuer.

Item 5.            Interest in Securities of the Issuer

      PRIF is the direct beneficial owner of, and has shared voting and
dispositive power (directly) over, 3,800 Convertible Preferred Shares of the
Issuer, issued at U.S. $1,000 per share, which Convertible Preferred Shares
are convertible, assuming conversion at $4.125 per Share, into 921,212 Shares
of the Issuer.  The Convertible Preferred Shares pay an 8% cumulative
dividend payable in Shares at the time of each conversion.  According to the
Issuer's Form 10-Q for the quarter ended March 31, 1996, 16,642,451 Shares
are issued and outstanding as at May 6, 1996.  Assuming conversion at a price
of $4.125 per Share, PRIF would be entitled upon conversion of all of its
Convertible Preferred Shares to 921,212 Shares, representing approximately
5.2% of the Issuer's outstanding Shares.  

                   As the general partner of PRIF, HB is the indirect
beneficial owner of, and has shared voting and dispositive power (indirectly)
over, the 3,800 Convertible Preferred Shares of the Issuer.  As the holder of
all the issued and outstanding shares of HB, Lillian Brachfeld
has the power to direct the indirect voting and disposition of the Convertible
Preferred Shares owned by HB and accordingly may be deemed the indirect
beneficial owner of, and to have shared voting and dispositive power
indirectly over, the 3,800 Convertible Preferred Shares of the Issuer.
As the sole director and sole executive officer of HB, Henry Brachfeld has
the power to direct the indirect voting and disposition of the Convertible
Preferred Shares owned by HB and accordingly may be deemed to be the indirect
beneficial owner of, and to have shared voting and dispositive power
indirectly over, the 3,800 Convertible Preferred Shares of the Issuer.

          To the knowledge of HB, none of the executive officer
or director of HB or the control person of HB is the beneficial owner of
any Shares of the Issuer.

          During the 60 days preceding the date hereof, there were no
other transactions in the Shares that were effected by the Reporting
Persons.

           There are no other persons known to have the right to receive
or the power to direct the receipt of dividends from, or the proceeds from
the sale of, Shares of the Issuer or the Convertible Preferred Shares of the
Issuer.

Item 6.            Contracts, Arrangements, Understandings or
                   Relationships With Respect to Securities of the Issuer

          PRIF is a limited partnership, the sole general partner of
which is HB.  HB has the exclusive authority to manage, control and
administer investments and affairs of PRIF.  The holder of all the issued
and outstanding shares of HB is Lillian Brachfeld.  Henry Brachfeld is
the sole director of HB and, as the sole executive officera) of HB,
President and Secretary of HB.

           PRIF is a party to an agreement with REFCO, dated June 3, 1996,
wherein REFCO agreed to loan to PRIF the sum of U.S. $2,000,000.  PRIF agreed
to secure the loan from REFCO by way of the deposit of 2,500 Convertible
Preferred Shares of the Issuer with REFCO. 

Item 7.            Material to be Filed as Exhibits

                   The following are being filed as Exhibits:
Exhibit A         Agreement relating to the filing of a joint acquisition
                  statement

Exhibit B         Loan Agreement dated June 3, 1996 between Refco F/X
                  Associates Ltd. and P.R.I.F., L.P.

Exhibit C         Subscription Agreement for Convertible Preferred Shares
                  dated May 29, 1996 between Seragen, Inc. and P.R.I.F., L.P.



                                                        SIGNATURES


                   After reasonable inquiry and to the best of the
undersigned's knowledge and belief, the undersigned certify that the
information set forth in this statement is true, complete and correct.

DATED: June 21, 1996.
          P.R.I.F., L.P.


                   Henry Brachfeld
          by _______________________________ 
                   Henry Brachfeld, President
                   and Secretary of HB and Co., Inc., General Partner


          HB AND CO., INC.


                   Henry Brachfeld"
          by _______________________________ 
                   Henry Brachfeld
                   President and Secretary



                   Lillian Brachfeld
          by _______________________________ 
                   Lillian Brachfeld

                              EXHIBIT INDEX
                                                                  Page No.

Exhibit A          Agreement relating to the filing of a joint
                   acquisition statement                             13

Exhibit B          Loan Agreement dated June 3, 1996 between
                   Refco F/X Associates Ltd. and P.R.I.F., L.P.      14

Exhibit C          Subscription Agreement for Convertible Preferred
                   Shares dated May 29, 1996 between Seragen, Inc.
                   and P.R.I.F., L.P.                                17

                                EXHIBIT A


        The undersigned hereby agree that the Statement on Schedule 13D
relating to the common shares of Seragen, Inc., to which this Agreement shall
be attached as an Exhibit, and all future amendments with respect thereto
are being filed with the Securities and Exchange Commission on behalf of
each of the undersigned.

        IN WITNESS WHEREOF the undersigned have each duly executed this
Agreement on June 21, 1996.

          P.R.I.F., L.P.


                Henry Brachfeld
          by ____________________________ 
                   Henry Brachfeld, President
                   and Secretary of HB and Co., Inc., General Partner


          HB AND CO., INC.


                 Henry Brachfeld
          by _______________________________ 
                   Henry Brachfeld
                   President and Secretary



                 Lillian Brachfeld
          by _______________________________ 
                   Lillian Brachfeld




                                       EXHIBIT B

P.R.I.F., L.P.
175 Bloor Street East
South Tower
6th Floor
Toronto, Canada
M4W 3R8


Refco F/X Associates, Ltd. (REFCO), a Bermudian registered company, is
pleased to offer the following terms and conditions with respect to the
following equity financing transaction:


Lender              Refco F/X Associates, Ltd.

Borrower            P.R.I.F., L.P., a limited partnership formed under the
                    laws of Ontario, Canada.

Security            Seragen Inc. Convertible Preferred Shares issued under
                    Regulation S at a price of U.S.$1,000 per share.  The
                    shares are subject to mandatory conversion into Common
                    Stock of Seragen Inc. no later than 18 moths from the date
                    of issuance of the Convertible Preferred Shares.  The
                    Convertible Preferred Shares are convertible into Common
                    Stock of Seragen Inc. at either (a) a discount of 27% to
                    the average of the closing bid price of Common Stock on
                    NASDAQ for the five business days immediately preceding
                    the conversion date, or (b) at $4.12 per share of Common
                    Stock.

Loan Advance        U.S.$2,000,000.

Margin Collateral   The Borrower will at all times maintain on deposit with
                    the Lender collateral equal to 80% of the Loan Advance.
                    The Lender and the Borrower acknowledge that the Loan
                    will initially be secured by the deposit of 2,500
                    Convertible Preferred Shares of Seragen Inc. issued at
                    a price of U.S.$2,500,000.

Maintenance of      Subsequent to the conversion of the Shares, to meet
Account             margin requirements, the Borrower may deposit collateral
                    consisting of cash, U.S. government obligations or other
                    such marketable securities or other property which may be
                    acceptable to the Lender.

Interest Rate       60-day LIBOR plus 200 bps (fixed at the date of advance of
                    the Loan) calculated on the amount of the Loan Advance
                    and payable on maturity.

Principal Amount    The principal amount of the Loan is equal to the Loan
                    Advance plus the Equity Participation Amount.

Equity 
Participation        The Equity Participation Amount is equal to 35% of the
Amount               sum of the following amounts:

                     (A) the net proceeds of the sale by the Borrower of that
                     number of shares of Common Stock of Seragen Inc. acquired
                     upon conversion of 2,000 Convertible Preferred Shares
                     (and for this purpose, if the Borrower is the owner of
                     more than 2,000 Convertible Preferred Shares, the first
                     Common Shares acquired by the Borrower upon conversion
                     and sold by the Borrower shall be taken into account for
                     purposes of this calculation) after deducting brokerage
                     commissions incurred in connection with the sale 

                     minus

                     (B) a pro rata portion of the commissions paid by the
                     Borrower in connection with the purchase of 2,000 of the
                     Seragen Inc. Convertible Preferred Stock;

                     (C) interest paid or accrued by the Borrower on the Loan
                     from the Lender from the date of borrowing to the date of
                     repayment, and

                     (D) U.S. $2,000,000.

Maturity Date        The Loan will be repayable on the earlier of the date of
                     closing of the sale by the Borrower of the Shares of
                     Common Stock of Seragen Inc. acquired by the Borrower
                     upon conversion of the Convertible Preferred Stock and 18
                     months from the date of advance of the Loan Advance.

If you are in agreement with the aforementioned terms and conditions, please
sign your acceptance below.

Yours sincerely,



Santo C. Maggio
Director

AGREED AND ACCEPTED


          Henry Brachfeld
By: 
                   P.R.I.F., L.P.

Dated: June 3, 1996

                                   EXHIBIT C

                     OFFSHORE SECURITIES SUBSCRIPTION AGREEMENT
                          FOR CONVERTIBLE PREFERRED SHARES



                   THE SECURITIES OFFERED HEREBY HAVE NOT BEEN
                   AND WILL NOT BE REGISTERED UNDER THE UNITED
                   STATES SECURITIES ACT OF 1933, AS AMENDED, AND
                   THE RULES AND REGULATIONS PROMULGATED
                   THEREUNDER (THE "1933 ACT"), AND MAY NOT BE
                   OFFERED OR SOLD WITHIN THE UNITED STATES (AS
                   DEFINED IN REGULATION S OF THE 1933 ACT) OR TO,
                   OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS
                   (AS DEFINED IN REGULATION S OF THE 1933 ACT)
                   EXCEPT PURSUANT TO REGISTRATION UNDER OR AN
                   EXEMPTION FROM THE REGISTRATION REQUIREMENTS
                   OF THE 1933 ACT.


          This Offshore Securities Subscription Agreement is executed in
reliance upon the transaction exemption afforded by Regulation S
("Regulation S") as promulgated by the Securities and Exchange Commission
("SEC") under the Securities Act of 1933, as amended ("1933 Act").

           This Agreement has been executed by the undersigned in connection
with the private placement of the Series A Convertible Preferred Stock 
(the "Shares") of

                                  SERAGEN, INC.
                                97 South Street
                               Hopkinton, MA 01748

National Association of Securities Dealers Automated Quotation System Symbol
(SRGN), a corporation organized under the laws of Delaware, United States of
America (the "ISSUER").

The Undersigned Purchaser:

NAME:      P.R.I.F., L.P. by H.B. and Co., Inc.        

ADDRESS:   c/o Wood Gundy Inc.                          

200 King Street West, Box 72, 6th Floor                  

Toronto, Ontario M5H 3Z8 Canada                          

, a non "U.S. person" (the "Purchaser") hereby represents and warrants to,
and agrees with, ISSUER as follows:

1.        The Offering.

          a.       The undersigned hereby subscribes for 3,800 Convertible
Preferred Shares (the "Shares"), at the aggregate subscription price of U.S.
$1,000 per share, payable in United States Dollars, for a total consideration
of $3,800,000 Dollars (the "Subscription Proceeds").  The Shares shall pay an
8% cumulative dividend payable in common stock at the time of each
conversion.  The Shares are subject to a mandatory, 18 month conversion feature
at the end of which all Shares outstanding will be automatically converted.
The undersigned acknowledges that a portion of such Subscription Proceeds is
payable to Scharff, Witchel & Co., Inc. in connection with facilitation of
the purchase of such Shares by the undersigned.

          The Purchaser is entitled, at its option, at any time commencing 45
days after issue hereof to convert any or all of the Shares into shares of
Common Stock, $0.01 par value per share, of the Issuer (the "Common Stock"), at
a conversion price for each share or Common Stock equal to the lesser of (a)
seventy-three percent (73%) of the Market Price (as defined below) of the
Issuer's Common Stock, or (b) the closing bid price on NASDAQ for the Common
Stock for the day immediately preceding the "Closing Date" as defined in
paragraph B.  "Market Price" shall mean the five (5) day average closing bid
for the Common Stock for the five (5) business days immediately preceding
the conversion date, as reported by NASDAQ.  Investor shall exercise the
conversion option pursuant to the Notice of Conversion attached hereto as
Exhibit "A".

          b.                Form of Payment.  PURCHASER shall pay the total
                   Subscription Proceeds hereunder by delivering good funds by
                   wire transfer in United States Dollars on or before May 29,
                   1996 into the escrow account as follows:

                                      First Union Bank of Connecticut
                                      Stamford Executive Office
                                      300 Main Street, P.O. Box 700
                                      Stamford, CT 06904-0700

          ABA #                       021101108
          Swift #                     UTCIUS33
          Account:                    2-072-298
          Account Name:               Joseph B. LaRocco, Esquire - Trustee
                                      Account

2.                 Subscriber Representations: Access to Information:
                   Independent Investigation.

          a.                Offshore Transaction.  PURCHASER represents and
                            warrants to ISSUER as follows:

                 i.         Neither the PURCHASER nor any person or entity for
                            whom the PURCHASER is acting as fiduciary is a U.S.
                            person.  A U.S. person means any one of the
                            following:

                            (1)       any natural person resident in the United
                                      States of America;

                            (2)       any partnership or corporation organized
                                      or incorporated under the laws of the
                                      United States;

                            (3)       any estate of which any executor or
                                      administrator is a U.S. person;

                            (4)       any trust of which any trustee is a U.S.
                                      person;

                            (5)       any agency or branch of a foreign entity
                                      located in the United States;

                            (6)       any non-discretionary account or similar
                                      account (other than an estate or trust)
                                      held by a dealer or other fiduciary for
                                      the benefit or account of a U.S. person;

                            (7)       any discretionary account or similar
                                      account (other than an estate or trust)
                                      held by a dealer or other fiduciary
                                      organized, incorporated, or (if an
                                      individual) resident in the United
                                      States; and

                            (8)       any partnership or corporation if:

                                   (a)         organized or incorporated under
                                               the laws of any foreign
                                               jurisdiction; and

                                   (b)         formed by a U.S. person,
                                               principally for the purpose of
                                               investing in securities not
                                               registered under the Securities
                                               Act, unless it is organized
                                               or incorporated, and owned, by
                                               accredited Investors (as
                                               defined in Rule 501(a) under
                                               the Securities Act) who are
                                               not natural persons, estates or
                                               trusts.

                ii.         At the time the buy order was originated, PURCHASER
                            was outside the United States and is outside the
                            United States as of the date of the
                            execution and delivery of this Agreement.  No
                            offer to purchase the Shares was made to a
                            person in the United States.

               iii.         PURCHASER is purchasing the Shares for its own
                            account or for the account of beneficiaries for whom
                            the PURCHASER has full investment discretion with
                            respect to the Shares and whom the PURCHASER has
                            full authority to bind so that each such
                            beneficiary is bound hereby as if
                            such beneficiary were a direct purchaser
                            hereunder and all representations, warranties and
                            agreements herein were made directly by
                            such beneficiary.  Purchaser is not purchasing
                            the Shares on behalf of any U.S. person and the
                            sale has not been prearranged with a purchaser
                            in the United States.

                iv.         Each distributor participating in the offering of
                            the Shares, if any, has agreed in writing, a copy of
                            which has been delivered to ISSUER with
                            this Agreement, that all offers and sales of the
                            Shares prior to the expiration of a period
                            commencing on the date of the Closing of the last
                            purchase and sale of the Convertible Preferred
                            Shares offered by the ISSUER and ending 40 days
                            thereafter (the "Restricted Period") shall
                            only be made (A) in compliance with the safe
                            harbor contained in Regulation S; (B) pursuant to
                            registration of Shares under the Securities
                            Act; or (C) pursuant to an exemption from
                            registration.

                 v.         PURCHASER represents and warrants and hereby agrees
                            that all offers and sales of the Shares shall only
                            be made (A) in compliance with the safe harbor
                            contained in Regulation S; (B) pursuant to
                            registration of Shares under the Securities Act;
                            or (C) pursuant to an exemption from
                            registration.

                vi.         PURCHASER understands and acknowledges that the
                            Shares have not been registered under the 1933
                            Act and may not be offered or sold in
                            the United States or to U.S. persons or for the
                            account or benefit of a U.S. person (other than
                            distributors as defined in Regulation S) unless
                            the Shares are registered under the Securities Act
                            or an exemption from the registration requirements
                            is available.

               vii.         PURCHASER acknowledges that the purchase of the 
                            Shares involves a high degree of risk and further
                            acknowledges that it can bear the economic risk
                            of the purchase of the Shares, including the
                            total loss of its investment.  PURCHASER
                            acknowledges that it has obtained the advice of
                            competent legal counsel in its domicile 
                            jurisdiction that Purchaser is qualified under
                            the laws of its domicile to purchase the
                            securities offered hereunder and that the offer
                            and sale of said securities will not violate the
                            laws of its domicile jurisdiction.

              viii.         PURCHASER understands that the Shares are being
                            offered and sold to it in reliance on the rules
                            promulgated under Regulation S and that the ISSUER 
                            is relying upon the truth and accuracy of the
                            representations, warranties, agreements,
                            acknowledgements and understandings of
                            PURCHASER set forth herein in order to determine 
                            the applicability of such rules and the suitability 
                            of PURCHASER to acquire the Shares.

                ix.         PURCHASER is sufficiently experienced in financial 
                            and business matters to be capable of evaluating 
                            the merits and risks of itsinvestments, and to make 
                            an informed decision relating thereto.

                 x.         In evaluating its investment, PURCHASER has 
                            consulted with its own investment and/or legal
                            and/or tax advisors.

                xi.         PURCHASER understands that in the view of the SEC 
                            the statutory basis for the exemption claimed for  
                            this transaction would not be present if the
                            offering of Shares, although in technical compliance
                            with Regulation S, is part of a plan or scheme to 
                            evade the registration provision of the Securities 
                            Act.  PURCHASER is acquiring the Shares
                            for investment purposes and has no present intention
                            to sell the Shares in the United States, to a U.S.
                            person or for the account or benefit of a U.S. 
                            person.  PURCHASER hereby confirms that the purpose
                            of including the PURCHASER Representation Letter 
                            (see Exhibit A attached hereto) to facilitate the 
                            transfer of the certificates representing the Shares
                            into street name, is to enable PURCHASER to comply 
                            with the requirements of certain offshore portfolio
                            management regulations and the security requirements
                            of offshore lenders for margin loans.  PURCHASER 
                            agrees to provide signature guarantees when any
                            Purchaser Representation Letter is delivered to 
                            the Company.

               xii.         PURCHASER is neither an underwriter of, nor a dealer
                            in, the Shares.  PURCHASER is not participating, 
                            pursuant to a contractual agreement, in the
                            distribution of the Shares.

              xiii.         PURCHASER represents and warrants that neither it 
                            nor any of its affiliates will directly or 
                            indirectly maintain any short position in Shares, 
                            Common Stock or any other securities of the ISSUER 
                            so long as any of the shares have not been converted
                            into Common Stock;
                            If PURCHASER is purchasing the 
                            Shares subscribed for hereby in representative or 
                            fiduciary capacity, the representations and 
                            warranties in this Offshore Securities Subscription 
                            Agreement shall be deemed to have been made on 
                            behalf of the person or persons for whom
                            PURCHASER is so purchasing.

                            The foregoing representations and warranties are 
                            true and accurate as of the  date hereof, shall be 
                            true and accurate as of the date of the acceptance
                            by the ISSUER of PURCHASER's subscription, and shall
                            survive thereafter.  If PURCHASER has knowledge, 
                            prior to the acceptance of its Offshore Securities 
                            Subscription Agreement by the ISSUER, that any such 
                            representations and warranties shall not be true
                            and accurate in any respect, the PURCHASER, prior to
                            such acceptance, will give written notice of such 
                            fact to the ISSUER specifying which representations 
                            and warranties are not true and accurate and the 
                            reasons therefor.

          b.                Current Public Information.  PURCHASER acknowledges 
                   that PURCHASER has acquired and carefully reviewed the 
                   ISSUER's annual report on Form 10-K for its fiscal year ended
                   December 31, 1995, and its quarterly report on Form 10-Q 
                   filed for the quarter ended March 31, 1996 (together, the
                   "SEC Reports").  Except as set forth in this Agreement and 
                   the SEC Reports, no representations or warranties have been 
                   made to PURCHASER by the ISSUER or any agent, employee or 
                   affiliate of the ISSUER, and in entering into this 
                   transaction PURCHASER is not relying upon any information,
                   other than that provided pursuant to this Agreement and the 
                   SEC Reports and the results of independent investigation 
                   by PURCHASER.

          c.                Independent Investigation; Access.  PURCHASER
                   acknowledges that PURCHASER, in making the decision to 
                   purchase the Shares subscribed for, has relied upon  
                   independent investigations made by it and its PURCHASER
                   representative, if any, and PURCHASER and such
                   representatives, if any, have, prior to any sale to
                   PURCHASER, had an opportunity to ask questions of, and
                   to receive answers from ISSUER or any person acting on its 
                   behalf concerning the terms and conditions of this offering.
                   PURCHASER and its advisors, if any, have been furnished with
                   access to all publicly available materials relating
                   to the business, finances and operations of the ISSUER and 
                   materials relating to the offer and sale of the Shares which
                   have been requested.  PURCHASER and its advisors, if any, 
                   have received complete and satisfactory answers to any
                   such inquiries.

          d.                No Government Recommendations or Approval. 
                   PURCHASER understands that no federal or state agency has
                   made or will make any finding or determination relating to
                   the fairness for public investment in the Shares, or has
                   passed or made, or will pass on or make, any recommendation
                   or endorsement of the Shares.

          e.                Entity Purchases.  If PURCHASER is a partnership, 
                   corporation or trust, the person executing this Agreement on
                   its behalf represents and warrants that:

                 i.         He or she has made due inquiry to determine the 
                            truthfulness of the representations and warranties 
                            made pursuant to this Agreement;

                ii.         He or she is duly authorized (if the undersigned is
                            a trust, by the trust agreement) to make this 
                            investment and to enter into and execute this
                            Agreement on behalf of such entity.

3.                 Issuer Representations.

          ISSUER represents and warrants to the PURCHASER as follows:

          a.                Reporting Company Status.  ISSUER is a reporting 
                   issuer as defined by Rule 902 of Regulation S.  ISSUER has 
                   filed the information required by the reporting obligations 
                   under Sections 13 or 15(d) of the Securities Exchange Act
                   of 1934, as amended.

          b.                Offshore Transaction.  ISSUER has not offered 
                   Convertible Preferred Shares to any person in the United 
                   States or to any U.S. person or for the account or benefit
                   of any U.S. person.  At the time the buy order was 
                   originated, ISSUER and/or its agent reasonably believed that
                   PURCHASER was outside of the United States and was not a U.S.
                   Person.  ISSUER and/or its agent reasonably believe that the
                   transaction has not been prearranged with a Purchaser in the
                   United States.

          c.                No Directed Selling Efforts.  In regard to this 
                   transaction, ISSUER has not conducted any "directed selling 
                   efforts" as that term is defined in Rule 902 of Regulation S 
                   nor has ISSUER conducted any general solicitation relating to
                   the offer and sale of Convertible Preferred Shares to U.S. 
                   persons residing within the United States or elsewhere.

          d.                Shares.  The Shares and shares of Common Stock 
                   issuable upon conversion of the Shares, when issued and 
                   delivered will be duly and validly authorized and issued,
                   fully paid and non-assessable and will not subject the
                   holders thereof to any liability by reason of being such 
                   holders.  The stock certificates representing Common Stock 
                   issued upon conversion of the Shares shall be unlegended
                   and there shall be no stop transfer instructions issued in
                   relation to such common stock.

          e.                Subscription Agreement.  This Agreement, when 
                   acknowledged by the signature of an officer of the ISSUER,
                   has been duly authorized, validly executed and delivered on 
                   behalf of the ISSUER and is a valid and binding agreement of 
                   the ISSUER in accordance with its terms.

          f.                Non-contravention.  The execution and delivery of 
                   this Agreement, the consummation of the issuance of the 
                   Shares and the transactions contemplated hereunder do not
                   and will not conflict with or result in a breach by the
                   ISSUER of any of the terms or provisions of, or constitute a
                   default under, the certificate of incorporation or by-laws of
                   the ISSUER (or any equivalent documents thereto) or any 
                   indenture, mortgage, deed of trust, or other material
                   agreement or instrument to which the ISSUER is a party or by
                   which it or any of its properties or assets are bound, or any
                   existing applicable law, rule or regulation or any applicable
                   decrees, judgment, or order of any court, federal or
                   state regulatory body, administrative agency or other 
                   governmental body having jurisdictions over the ISSUER or 
                   any of its properties or assets.

          g.                Prior Shares Issued Under Regulation S.  ISSUER has 
                   not issued any shares of stock under Regulation S subsequent 
                   to its most recent SEC Report.

          h.                Securities Law Compliance.  Based upon the 
                   representations and warranties of the PURCHASER in Section 2 
                   and of all other PURCHASERS executing similar agreements in 
                   connection with this offering, with respect to the Company's 
                   actions, (i) the offer and the sale of Shares has been made 
                   so as to conform in all respects with the requirements of 
                   Regulation S and with the requirements of all other published
                   rules and regulations of the SEC currently in effect relating
                   to "private offerings" to non-residents of the United States
                   of the type contemplated herein; and (ii) Neither the offer, 
                   sale or delivery of the Shares under the terms of this 
                   Agreement will violate Section 5 of the Securities Act,
                   as presently in effect.

          i.                Filings.  ISSUER undertakes and agrees pursuant to
                   the sale of its securities under Regulation S to make all 
                   necessary filings in connection with the sale of its 
                   securities as required by the laws and regulations of the
                   United States.

4.                 Restricted Period; Conversion.

          Rule 903 (c) under Regulations S restricts PURCHASER from offering and
selling the Shares or the shares of Common Stock into which the Shares may be
converted to U.S. persons or for the account or benefit of a U.S. person 
during the forty-five (45) day Restricted Period. 

5.                 Reliance on Representations.

          PURCHASER understands that the offer and sale of the Shares is not 
being registered under the Securities Act.  ISSUER is relying on the rules 
governing offers and sales made outside the United States pursuant to 
Regulation S.  Rules 901 through 903 of Regulation S govern this transaction.

6.                 Transfer Agent Instructions.

          a.                Legends on Certificate.  PURCHASER may transfer the 
                   Shares to persons other than U.S. persons in accordance with 
                   Regulation S prior to the expiration of the 45 day restricted
                   period.  Accordingly, PURCHASER acknowledges that the Company
                   will instruct its transfer agent to place a stop
                   transfer order with respect to certificates representing the
                   Shares and that such certificates will bear the following 
                   legend:

                   "The shares represented by this certificate have been issued
                   pursuant to Regulation S promulgated under the Securities 
                   Act of 1933, as amended ("Act"), and have not been registered
                   under the Act.  These shares may not be offered or sold 
                   within the United States or to or for the account of a "U.S.
                   Person" (as that term is defined in Regulation S) until after
                                               , 1996, [the 45th day following 
                   completion of the offering].  After such date, this legend
                   shall have no further effect."

          b.                Purchaser Representation Letter.  ISSUER agrees to
                   accept a PURCHASER's Representation Letter from the PURCHASER
                   in the form of Exhibit "B" attached, as sole and sufficient 
                   evidence that the PURCHASER has complied with applicable 
                   securities laws and upon receipt of such a letter shall
                   promptly transfer, or instruct the transfer agent, for the 
                   Convertible Preferred Shares, if any, to transfer the Shares
                   into "Street Name", if so requested by PURCHASER, as 
                   expeditiously as practical after receipt of the certificates 
                   and the PURCHASER Representation Letter; provided, ISSUER 
                   shall not be required to deliver such instructions if it 
                   knows or reasonably believes, any of the representations
                   made in the PURCHASER Representation Letter are false.

          c.                Transfer Agent Instructions.  ISSUER shall issue, 
                   or instruct the transfer agent for the Convertible Preferred
                   Shares, if any, to issue one or more share certificates 
                   representing Shares, in the names of qualified purchasers to
                   be specified prior to Closing.  All of the Shares so issued 
                   will be issued pursuant to Regulation S.  ISSUER warrants 
                   further that the Shares shall be freely transferable on 
                   the books and records of ISSUER subject to compliance with
                   Regulation S and other applicable securities laws and the 
                   terms of this Agreement.

7.                 Conversion Procedures.

          a.                The Purchaser is entitled, at its option, at any 
                   time commencing 45 days after issue hereof to convert any 
                   or all of the Shares into shares of Common Stock, 
                   $0.01 par value per share, of the issuer 
                   (the "Common Stock"), at a conversion price for each 
                   share or Common Stock equal to the lesser of (a)
                   seventy-three percent (73%) of the Market Price (as defined 
                   in Paragraph 1 above) of the Issuer's Common Stock, or 
                   (b) the closing bid price on NASDAQ for the Common Stock 
                   for the day immediately preceding the "Closing Date" as 
                   defined in paragraph 8.  Such conversion shall be effectuated
                   by sending to the Company, or its attorney, a facsimile or 
                   original of the signed Notice of Conversion and a facsimile
                   or original of the signed Purchaser Representation Letter, 
                   see Exhibits A and B attached hereto, which evidences
                   Purchaser's intention to convert the Shares or a specified 
                   portion thereof, and accompanied by proper assignment, if 
                   applicable, as long as the original Shares to be converted
                   are received by the Company within two business days after
                   receipt of the Notice of Conversion and Purchaser 
                   Representation Letter.  No fractional shares or scrip 
                   representing fractions of shares will be issued on
                   conversion, but the number of shares issuable shall be 
                   rounded down or up, as the case may be, to the nearest 
                   whole share.  The date on which notice of conversion is 
                   effective ("Conversion Date") shall be deemed to be the 
                   date on which the Purchaser has delivered to the Company the 
                   original Shares, a facsimile or original of the signed Notice
                   of Conversion and a facsimile or original of the signed 
                   Purchaser Representation Letter.

          b.                Within two (2) business days after receipt of the 
                   documentation referred to above in this Section 7(a), the 
                   Company shall deliver a certificate, without stop transfer
                   instructions, for the number of Common Stock issuable upon 
                   the conversion.  It shall be the Company's responsibility
                   to take all necessary actions and to bear all such costs 
                   to issue the Common Stock as provided herein, including 
                   the delivery of an opinion letter to the transfer agent, if
                   so required.  The person in whose name the certificate of 
                   Common Stock is to be registered shall be treated as a 
                   shareholder of record on and after the conversion date.  
                   No payment or adjustment shall be made for accrued and
                   unpaid interest until the earlier of the Conversion Date 
                   or the mandatory conversion date.  Upon surrender of any 
                   Shares that are to be converted in part, the Company shall 
                   issue to the Purchaser new Shares equal to the number of
                   unconverted Shares, if so requested by Purchaser.

8.                 Closing Date and Escrow Agent.

          The date of the issuance of the Shares in the name of the PURCHASER
(the "Closing Date") shall be May 29, 1996.  Closing shall be effected through
delivery of funds and certificates to the Escrow Agent.  PURCHASER shall 
forthwith deliver the necessary funds as indicated in Paragraph 1 to the 
Escrow Agent.  Share Certificates will be delivered at the instructions of 
the ISSUER to the Escrow Agent: Joseph B. La Rococo, Esquire, 1055
Washington Boulevard, Stamford, Connecticut 06901.  PURCHASER herein instructs 
the Escrow Agent, and gives the Escrow Agent its good and sufficient authority 
to release funds to the ISSUER and Scharff, Witchel & Co., Inc. in connection 
with the purchase of the Shares, upon receipt by the Escrow Agent of said 
Shares subscribed for, subject to the terms and conditions of any Escrow 
Agreement in effect between the Issuer and the Escrow Agent.  PURCHASER and 
ISSUER agree that the Escrow Agent, in his capacity as Escrow Agent, has no 
liability as a result of any fraudulent or unlawful conduct of any party 
other than the Escrow Agent and agree to hold the Escrow Agent harmless in 
such event.  In the event the Share Certificates are not received by the 
Escrow Agent from the ISSUER within Five (5) Business Days of the date of 
receipt of the Escrowed Funds, the Escrow Agent shall return the Escrowed 
Funds without interest to the PURCHASER by wire transfer pursuant to written
instructions.

9.                 Conditions to the Company's Obligation to Sell.

          ISSUER reserves the right to reject this Agreement.  PURCHASER 
understands that ISSUER'S Obligation to sell the Shares subscribed for 
hereunder is conditioned upon:

          a.                The receipt and acceptance by ISSUER of this 
                   Agreement for all the Shares as evidenced by execution of 
                   this subscription agreement by the Chief Executive Officer
                   or Chief Financial Officer of the ISSUER.  The acceptance
                   of funds by the ISSUER shall be deemed to be constructive
                   acceptance of this Agreement.  PURCHASER understands this
                   Agreement is irrevocable; and

          b.                Delivery into the Escrow Agent by PURCHASER of good
                   U.S. funds as payment in full for the purchase of the Shares
                   and all fees.

10.                 Conditions to PURCHASER's Obligation to Purchase

          ISSUER understands that PURCHASER's obligation to purchase the 
Shares subscribed for hereunder is conditioned upon the following:

          a.                execution and delivery of this Agreement; and

          b.                delivery of Shares.

11.                Governing Law.

          This Agreement shall be governed by and construed under the laws 
of the State of Delaware without regard to its choice of law principles.

12.                Right of First Refusal.

          The Purchaser is hereby given a right of first refusal on any 
Regulation S offering involving the Issuer during the next 12 months.

13.                Change in Regulation S.

          During the eighteen month period following issuance of the Shares, 
if there is any change in Regulation S that would restrict the conversion of 
the Shares into Common Stock according to the terms and conditions set forth 
in this Agreement, then in such event SRGN shall immediately seek 
registration by way of a Form S-3 filing.  All such action required by
SRGN to complete the registration shall be done as soon as possible at SRGN's 
sole cost and expense.

14.                Entire Agreement.

          This Agreement constitutes the entire agreement among the parties 
hereof with respect to the subject matter hereof and supersedes any and all 
prior or contemporaneous representations, warranties, agreements and 
understandings in connection therewith.  This Offshore Securities Subscription 
Agreement may be amended only in writing executed by all parties hereto.

15.                Independent Counsel.  The undersigned acknowledges that it 
          has been advised to consult with its own attorney regarding legal 
          matters concerning this Agreement.

16.                Full Name and Address of PURCHASER for Registration 
          Purposes:

NAME:              GUNDYCO              
                                                       
                           

ADDRESS:           Attn: Jay Smith, Wood Gundy Inc.     
                                          
                   

                   200 King Street West, Box 72, 6th Floor   
                                   
                 

                   Toronto, Ontario M5H 3Z8 Canada
                                             
                   

TELE. NO.           416-594-8930                  
                                                
                          

FAX NO.            416-594-8916                     
                                             
                           

CONTACT NAME:               Jay Smith        
                                                           
                          


17.                Delivery Instructions (If different from Registration Name):

NAME:

ADDRESS:







TELE. NO.

FAX NO. 

CONTACT NAME:

SPECIAL 
INSTRUCTIONS:               Please ensure registered in street name "GUNDYCO"
                     
         








18.                ISSUER'S Acceptance Based Upon PURCHASER Representations.

          ISSUER is accepting this subscription based upon and in reliance 
upon the representations and warranties of PURCHASER contained herein, 
including without limitation, those contained in section 2 and this Agreement
would not be accepted by ISSUER in the absence of such representations and 
warranties.


IN WITNESS WHEREOF, this Offshore Securities Subscription Agreement was duly
executed as of the 29th day of May, 1996.

Company
Name:              P.R.I.F., L.P. by H.B. and Co., Inc.  
                                               
                    
                                                         Purchaser



                                                    
                                                          "Henry Brachfeld"
                                      By: 
                                               Official Signatory of Purchaser


Name
(Printed):         Henry Brachfeld                   
                                                            
                         

Title:             Officer                     
                                                                     
                             

Country of 
Execution:         Canada                  
                                                                        
                             

Accepted this 29th day of the month of May, 1996.




                                      SERAGEN, INC.

                                                         "George W. Masters"
                                      By: 
                                               George W. Masters, its Chief
                                               Executive Officer duly authorized





                                                         EXHIBIT "A"

                                                   NOTICE OF CONVERSION


                                             _________________________, 199__

SERAGEN, INC.
97 South Street
Hopkinton, MA 01748


                   The undersigned, _______________________________ 
(the "Holder"), does hereby give notice that it wishes to convert ____________ 
shares of Series A Convertible Preferred Stock (the "Shares") of SERAGEN, INC.
(the "Issuer") held by it into shares of Common Stock of the Issuer, which have 
been reserved for issuance upon such conversion.  The Holder represents and 
warrants that (i) all of the requirements of Regulation S promulgated under 
the Securities Act of 1933, as amended (the "Act") applicable to the Holder 
have been complied with by the Holder and (ii) the Holder has not engaged in any
transaction or series of transactions that, although in technical compliance 
with all of the requirements of Regulation S, is part of a plan or scheme to 
evade the registration requirements of the Act.  The number of shares of the
Corporation's common stock, par value $.01 per share ("Common Stock") 
issuable upon conversion of the Shares held by an investor under the terms 
of this Agreement shall equal the Subscription Proceeds plus the amount of
the accrued dividends through the Conversion Date, divided by the lesser 
of (a) seventy-three percent (73%) of the Market Price (as defined below)
of the Issuer's Common Stock, or (b) the closing bid price on NASDAQ for 
the Common Stock for the day immediately preceding the "Closing Date" as 
defined in paragraph 8 of the Subscription Agreement.  "Market Price"
shall mean the five (5) day average closing bid for the Common Stock for 
the five (5) business days immediately preceding the conversion date, 
as reported by NASDAQ.  The undersigned has not taken any short position or 
hedge position in the Company's Common Stock to be covered by any of the 
Shares or the Underlying Common Stock nor has the undersigned made any 
promissory notes and/or pledges to that effect on the Company's
Common Stock.


                                             [Holder]



                                        By:_________________________________







                                                        EXHIBIT "B"

                                              PURCHASER REPRESENTATION LETTER

Dear Sirs:

                   The undersigned ____________, has purchased on
____________, 1996, ____________ Convertible Preferred Shares of SERAGEN, INC. 
(the "Company") at a per share subscription price of $_______ per share, 
(the Convertible Preferred Shares referred to herein as the "Shares").  In 
connection with such purchase, the undersigned, has executed and delivered 
a subscription agreement ("Subscription Agreement") of your design.  As the 
forty-five (45) day transaction restriction period has expired, the undersigned
hereby requests that the Shares be transferred into "Street Name" 
of __________________________.

                   The undersigned represents and warrants as follows:

1.                 The offer to purchase the Shares was made to it outside of 
          the United States and the undersigned was, at the time the 
          Subscription Agreement was executed and delivered, and is now, 
          outside the United States;

2.                 It is not a U.S. Person (as such term is defined in 
          Section 902(a) of Regulation S promulgated under the United States 
          Securities Act of 1933 (the "Securities Act"); and it has purchased
          the Shares for its own account and not for the account or benefit
          of any U.S. person;

3.                 All offers and sales by the undersigned of the Shares shall 
          be made pursuant to an effective registration statement under the 
          Securities Act or pursuant to an exemption from, or in a 
          transaction not subject to the registration requirements of, 
          the Securities Act;

4.                 It is familiar with and understands the terms, conditions and
          requirements contained in Regulation S and definitions of U.S. persons
          contained in Regulation S;

5.                 The undersigned has not engaged in any "directed selling
          efforts" (as such term is defined in Regulation S) with respect to the
          Shares; and

6.                 The undersigned purchased its Shares with investment
          intent and presently has no interest to sell, dispose of or otherwise
          transfer the Shares.  The purpose for this request is to facilitate
          the management of the undersigned's investment accounts.

Dated this ______ day of the month of ____________, 1996.

By:

_________________________________       ____________________________________
Official Signature of Purchaser                                Title


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