MATRITECH INC/DE/
SC 13D, 1995-10-10
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D


                   Under the Securities Exchange Act of 1934

                                MATRITECH, INC.
                                ---------------
                                (Name of Issuer)

                          Common Stock, $.01 Par Value
                          ----------------------------
                         (Title of Class of Securities)

                                   576818108
                   -----------------------------------------
                     (CUSIP Number of Class of Securities)

                               Lawrence A. Bowman
                        Spinnaker Technology Fund, L.P.
                      c/o Soundview Asset Management, Inc.
                               22 Gatehouse Road
                          Stamford, Connecticut 06092
                                 (203) 462-7250
           ---------------------------------------------------------
           (Name, Address and Telephone Number of Persons Authorized
                     to Receive Notices and Communications)

                                With a copy to:

                              David P. Falck, Esq.
                      Winthrop, Stimson, Putnam & Roberts
                             One Battery Park Plaza
                         New York, New York 10004-1490
                                 (212) 858-1000

                               September 28, 1995
                      --------------------------------
                         (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 this
         Statement:  |X|



                            Exhibit Index on Page 10

                               Page 1 of 11 Pages

<PAGE>



                                  SCHEDULE 13D


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

CUSIP NO. 576818108
- -----------------------------
===============================================================================
   1.     NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              Spinnaker Technology Fund, L.P.
- -------------------------------------------------------------------------------
   2.     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                        (a) o
                                                                        (b) |X|
- -------------------------------------------------------------------------------
   3.     SEC USE ONLY

- -------------------------------------------------------------------------------
   4.     SOURCE OF FUNDS

              WC
- -------------------------------------------------------------------------------
   5.     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
          PURSUANT TO ITEMS 2(d) OR 2(e)                                    o

- -------------------------------------------------------------------------------
   6.     CITIZENSHIP OR PLACE OF ORGANIZATION

              Delaware
- -------------------------------------------------------------------------------
                             7.     SOLE VOTING POWER

                                         1,040,350
                           ----------------------------------------------------
        NUMBER OF            8.     SHARED VOTING POWER
          SHARES
       BENEFICIALLY                      -0-
         OWNED BY          ----------------------------------------------------
           EACH              9.     SOLE DISPOSITIVE POWER
        REPORTING
       PERSON WITH                       1,040,350
                           ----------------------------------------------------
                            10.     SHARED DISPOSITIVE POWER

                                         -0-
- -------------------------------------------------------------------------------
  11.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              1,040,350
- -------------------------------------------------------------------------------
  12.     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES                                                            o

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

              8.1%
- -------------------------------------------------------------------------------
  14.     TYPE OF REPORTING PERSON

              PN
===============================================================================


                               Page 2 of 11 Pages

<PAGE>



                                  SCHEDULE 13D


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

CUSIP NO. 576818108
- -----------------------------
===============================================================================
   1.     NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              Soundview Asset Management, Inc.
- -------------------------------------------------------------------------------
   2.     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                        (a) o
                                                                        (b) |X|
- -------------------------------------------------------------------------------
   3.     SEC USE ONLY

- -------------------------------------------------------------------------------
   4.     SOURCE OF FUNDS

              AF
- -------------------------------------------------------------------------------
   5.     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
          PURSUANT TO ITEMS 2(d) OR 2(e)                                    o

- -------------------------------------------------------------------------------
   6.     CITIZENSHIP OR PLACE OF ORGANIZATION

              Delaware
- -------------------------------------------------------------------------------
                             7.     SOLE VOTING POWER

                                       1,040,350
                           ----------------------------------------------------
        NUMBER OF            8.     SHARED VOTING POWER
          SHARES
       BENEFICIALLY                     -0-
         OWNED BY          ----------------------------------------------------
           EACH              9.     SOLE DISPOSITIVE POWER
        REPORTING
       PERSON WITH                      1,040,350
                           ----------------------------------------------------
                            10.     SHARED DISPOSITIVE POWER

                                         -0-
- -------------------------------------------------------------------------------
  11.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              1,040,350
- -------------------------------------------------------------------------------
  12.     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES                                                            o

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

              8.1%
- -------------------------------------------------------------------------------
  14.     TYPE OF REPORTING PERSON

              CO
===============================================================================


                               Page 3 of 11 Pages

<PAGE>



Item 1.           Security and Issuer.
              
                  The class of equity securities to which this Statement relates
is the  common  stock,  $.01 par  value  per  share  (the  "Common  Stock"),  of
Matritech, Inc., a Delaware corporation (the "Company"), which has its principal
executive offices at 763 Concord Avenue, Cambridge, Massachusetts 02138.


Item 2.           Identity and Background.

                  This  Statement is being filed in  connection  with the Common
Stock  beneficially held by Spinnaker  Technology Fund, L.P., a Delaware limited
partnership  ("Spinnaker").   Spinnaker  conducts  its  principal  business  and
maintains its principal office at 22 Gatehouse Road, Stamford, Connecticut
06902.

                  The sole  general  partner of  Spinnaker  is  Soundview  Asset
Management,  Inc.,  a Delaware  corporation  ("Soundview"),  which  conducts its
principal  business and  maintains its  principal  office at 22 Gatehouse  Road,
Stamford,  Connecticut  06902.  All business of Spinnaker is conducted under the
complete and  exclusive  control of  Soundview.  (Spinnaker  and  Soundview  are
sometimes hereinafter referred to as the "Filers").

                  Spinnaker  was formed in 1994 for the  principal  business  of
providing  an  investment  vehicle  for  institutional  and other  sophisticated
investors to acquire equity  interests in companies with  significant  potential
for long-term growth in value in the technology  industry.  Soundview was formed
in 1994 for the principal business of serving as the general partner and manager
of various investment funds and portfolios.

                  The name,  business address,  present principal  occupation or
employment of each  executive  officer and director of Soundview is set forth in
Schedule  I  hereto,  which is  incorporated  herein by  reference.  Each of the
individuals listed in Schedule I hereto are U.S. citizens.

                  During the past five years,  none of the Filers nor any of the
executive  officers  or  directors  of the  Filers (i) has been  convicted  in a
criminal proceeding (excluding traffic violations or similar  misdemeanors),  or
(ii) was 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

                               Page 4 of 11 Pages

<PAGE>



mandating activities subject to, federal or state securities laws or finding any
violation with respect to such laws.


Item 3.           Source and Amount of Funds or Other Consideration.

                  The funds used by  Spinnaker  to pay for its  interest  in the
Common Stock,  in the amount of $2,392,805 for 1,040,350  shares of Common Stock
at a  purchase  price  of $2.30  per  share,  were  obtained  from  the  capital
contributions made by its partners.


Item 4.           Purpose of Transaction.

                  Spinnaker  has  acquired  the  Common  Stock  for   investment
purposes.  None of the Filers has any  intention of  acquiring  control over the
Company;  however,  if Spinnaker or Soundview believe that further investment in
the Company is  attractive,  whether  because of the market  price of the Common
Stock or  otherwise,  Spinnaker may acquire  additional  shares of Common Stock.
Similarly,  depending upon market and other factors,  Spinnaker may determine to
dispose of the Common Stock.  Except as disclosed  above, the Filers do not have
any plans or  proposals of the type set forth in  Paragraphs  (a) through (j) of
Item 4 of Schedule 13D.


Item 5.           Interest in Securities of the Issuer.

                  (a) and (b) The  number of shares of Common  Stock  issued and
outstanding and the percentage  calculations  resulting therefrom in this Item 5
are based on information received from the Company. According to the Company, as
of August 28,  1995,  there were  9,787,402  shares of Common  Stock  issued and
outstanding.  After  giving  effect to the issuance and sale by way of a private
placement  under Section 4(2) and  Regulation D of the Securities Act of 1933 of
3,000,000  shares of Common Stock on September 28, 1995,  including those shares
purchased by Spinnaker,  there are 12,787,402  issued and outstanding  shares of
Common Stock.

                  Spinnaker  beneficially owns 1,040,350 shares of Common Stock,
representing  approximately  8.1% of the Common  Stock  issued and  outstanding.
Spinnaker has sole voting and dispositive power with respect to all Common Stock
owned by it, which power is exercised by its general partner, Soundview.

                  Soundview may be deemed to beneficially  own all the shares of
Common Stock owned by Spinnaker by virtue of its status as sole general  partner
of Spinnaker. Such deemed

                               Page 5 of 11 Pages

<PAGE>



beneficial  ownership would total 1,040,350 shares,  representing  approximately
8.1% of the Common Stock issued and outstanding.  Soundview disclaims beneficial
ownership  of such  shares.  Soundview  may also be  deemed in its  capacity  as
general  partner of  Spinnaker to share the voting power and the power to direct
the disposition of the shares of Common Stock owned by Spinnaker.

                  (c) Except as set forth above, none of the Filers has effected
any transactions in shares of Common Stock during the past 60 days.

                  (d) To the best knowledge of the Filers,  no person other than
the  Filers  has the right to  receive  or the power to direct  the  receipt  of
dividends from, or the proceeds from, the sale of shares of Common Stock.

                  (e) Not applicable.

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

                  Pursuant  to the  Securities  Purchase  Agreement  dated as of
September  28,  1995  (the  "Agreement")  between  the  Company  and  Spinnaker,
Spinnaker  was granted  registration  rights with  respect to the Common  Stock.
Under the terms of the Agreement,  the Company is required,  within 60 days from
September  28,  1995 to  prepare  and file a  registration  statement  under the
Securities Act of 1933,  covering the sale of the Common Stock held by Spinnaker
and to use its best  efforts  to cause  such  registration  statement  to become
effective, subject to certain conditions.


Item 7.           Material to be Filed as Exhibits.



         Exhibit A:                 Agreement pursuant to Rule 13d-1(f)(1).

         Exhibit B:                 Securities Purchase Agreement between
                                    Matritech, Inc. and Spinnaker Technology
                                    Fund, L.P., dated September 28, 1995
                                    (incorporated by reference from Exhibit
                                    No. 10 to the Company's Current Report on
                                    Form 8-K dated September 29, 1995, File
                                    No. 0-19921).


                               Page 6 of 11 Pages

<PAGE>



                                   SIGNATURE
                                   ---------

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  Statement is true,
complete and correct.


Date:  October 6, 1995

                                    SPINNAKER TECHNOLOGY FUND, L.P.

                                    By: Soundview Asset Management, Inc.,
                                         Its General Partner



                                        By:  /s/ Lawrence A. Bowman
                                             ----------------------
                                             Lawrence A. Bowman
                                             President






                               Page 7 of 11 Pages

<PAGE>



                                   SIGNATURE
                                   ---------

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  Statement is true,
complete and correct.


Date:  October 6, 1995


                                    SOUNDVIEW ASSET MANAGEMENT, INC.



                                    By:  /s/ Lawrence A. Bowman
                                         ----------------------
                                         Lawrence A. Bowman
                                         President


                               Page 8 of 11 Pages

<PAGE>



                                   SCHEDULE I

          INFORMATION WITH RESPECT TO DIRECTORS AND EXECUTIVE OFFICERS
                      OF SOUNDVIEW ASSET MANAGEMENT, INC.

DIRECTORS AND EXECUTIVE OFFICERS:


                  The following table sets forth the name,  business address and
present principal  occupation or employment of each of the current directors and
executive officers of Soundview Asset Management, Inc. All business of Spinnaker
Technology  Fund, L.P. is conducted under the complete and exclusive  control of
Soundview Asset Management, Inc., its General Partner.

                                                 PRESENT PRINCIPAL OCCUPATION
         NAME                                           OR EMPLOYMENT
         ----                                    ----------------------------

Lawrence A. Bowman                               President and Director of
Soundview Asset Management, Inc.                 Soundview Asset Management,
22 Gatehouse Road                                Inc.
Stamford, Connecticut 06092

Kerry Tyler                                      Secretary and Treasurer of
Soundview Asset Management, Inc.                 Soundview Asset Management,
22 Gatehouse Road                                Inc.
Stamford, Connecticut 06092

James B. Townsend                                Director of Soundview
Soundview Asset Management, Inc.                 Asset Management, Inc.
22 Gatehouse Road
Stamford, Connecticut 06092


Russell D. Crabs                                 Director of Soundview
Soundview Asset Management, Inc.                 Asset Management, Inc.
22 Gatehouse Road
Stamford, Connecticut 06092












                               Page 9 of 11 Pages

<PAGE>



                                 EXHIBIT INDEX
                                 -------------


    Exhibit                                                             Page
    Number                         Documents                           Number
    -------                        ---------                           ------

       A             Agreement pursuant to Rule 13d-1(f)(1)              11

       B             Securities Purchase Agreement between
                     Matritech, Inc. and Spinnaker Technology
                     Fund, L.P., dated September 28, 1995
                     (incorporated by reference from Exhibit
                     No. 10 to the Company's Current Report on
                     Form 8-K dated September 29, 1995, File
                     No. 0-19921).




                              Page 10 of 11 Pages

<PAGE>


                                                                      Exhibit A


                                   AGREEMENT
                                   ---------

                  Pursuant  to  Rule   13d-1(f)(1)(iii)   of  Regulation   13D-G
promulgated under the Securities  Exchange Act of 1934, as amended,  each of the
undersigned  agrees that the  Statement  to which this  Exhibit A is attached is
filed on its behalf.

Date:  October 6, 1995


SPINNAKER TECHNOLOGY FUND,
L.P.

By: Soundview Asset
Management, Inc.,
     Its General Partner


By:  /s/ Lawrence A. Bowman
     ----------------------
     Lawrence A. Bowman
     President




SOUNDVIEW ASSET MANAGEMENT,
INC.


By:  /s/ Lawrence A. Bowman
     ----------------------
     Lawrence A. Bowman
     President







                              Page 11 of 11 Pages

<PAGE>





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