SYBASE INC
SC 13D/A, 1997-04-21
PREPACKAGED SOFTWARE
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*

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

                          Common Stock, $.001 Par Value
                     -------------------------------------
                         (Title of Class of Securities)

                                    871130100
                              -------------------
                                 (CUSIP Number)

                              Stephen M. Vine, Esq.
                    Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                               590 Madison Avenue
                            New York, New York 10022
                                 (212) 872-1000
                    ----------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 April 11, 1997
                         -----------------------------
                      (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 [_].

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 disclosure
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 following page(s)
                               Page 1 of 23 Pages


<PAGE>


                                                              Page 2 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               QUANTUM INDUSTRIAL PARTNERS LDC

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

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

               Cayman Islands

                      7      Sole Voting Power
 Number of                          0
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          579,600
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   0
    With
                      10     Shared Dispositive Power
                                    579,600

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    579,600

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]


13      Percent of Class Represented By Amount in Row (11)

                             .74%

14      Type of Reporting Person*

               OO; IV

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 3 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               QIH MANAGEMENT INVESTOR, L.P.

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

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

               Delaware

                      7      Sole Voting Power
  Number of                         0
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          579,600
   Each
  Reporting           9      Sole Dispositive Power
   Person                                   0
    With
                      10     Shared Dispositive Power
                                    579,600

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    579,600

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]


13      Percent of Class Represented By Amount in Row (11)

                             .74%

14      Type of Reporting Person*

               PN; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 4 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               QIH MANAGEMENT, INC.

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

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

               Delaware

                      7      Sole Voting Power
 Number of                          0
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          579,600
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   0
    With
                      10     Shared Dispositive Power
                                    579,600

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    579,600

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]


13      Percent of Class Represented By Amount in Row (11)

                             .74%

14      Type of Reporting Person*

               CO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 5 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100


1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               SOROS FUND MANAGEMENT LLC

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

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

               Delaware

                      7      Sole Voting Power
  Number of                         716,200
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          579,600
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   716,200
    With
                      10     Shared Dispositive Power
                                    579,600

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    1,295,800

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             1.65%

14      Type of Reporting Person*

               OO; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 6 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               GEORGE SOROS (in the capacity described herein)

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

3       SEC Use Only

4       Source of Funds*

               PF

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

                      7      Sole Voting Power
 Number of                          1,800,000
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          1,295,800
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   1,800,000
    With
                      10     Shared Dispositive Power
                                    1,295,800

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    3,095,800

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             3.95%

14      Type of Reporting Person*

               IA; IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 7 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100


1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               STANLEY F. DRUCKENMILLER (in the capacity described herein)

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            b.  [x]

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

                      7      Sole Voting Power
  Number of                         0
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          1,295,800
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   0
    With
                      10     Shared Dispositive Power
                                    1,295,800

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    1,295,800

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             1.65%

14      Type of Reporting Person*

               IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 8 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               WINSTON PARTNERS II LDC

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            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) [_]

6       Citizenship or Place of Organization

               Cayman Islands

                      7      Sole Voting Power
 Number of                          1,706,747
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          0
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   1,706,747
    With
                      10     Shared Dispositive Power
                                    0

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    1,706,747

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             2.18%

14      Type of Reporting Person*

               OO; IV

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                              Page 9 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               WINSTON PARTNERS II LLC

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            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) [_]

6       Citizenship or Place of Organization

               Delaware

                      7      Sole Voting Power
 Number of                          837,553
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          0
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   837,553
    With
                      10     Shared Dispositive Power
                                    0

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    837,553

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             1.07%

14      Type of Reporting Person*

               OO; IV

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                             Page 10 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               CHATTERJEE ADVISORS LLC

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            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) [_]

6       Citizenship or Place of Organization

               Delaware

                      7      Sole Voting Power
 Number of                          2,544,300
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          0
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   2,544,300
    With
                      10     Shared Dispositive Power
                                    0

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    2,544,300

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             3.24%

14      Type of Reporting Person*

               OO; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                             Page 11 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               CHATTERJEE MANAGEMENT COMPANY

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            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) [_]

6       Citizenship or Place of Organization

               Delaware

                      7      Sole Voting Power
 Number of                          2,544,300
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          0
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   2,544,300
    With
                      10     Shared Dispositive Power
                                    0

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    2,544,300

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             3.24%

14      Type of Reporting Person*

               CO; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                             Page 12 of 23 Pages

                                  SCHEDULE 13D

CUSIP No. 871130100

1       Name of Reporting Person
        S.S. or I.R.S. Identification No. of Above Person

               PURNENDU CHATTERJEE (in the capacity described herein)

2       Check the Appropriate Box If a Member of a Group*
                                            a.  [_]
                                            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) [x]

6       Citizenship or Place of Organization

               United States

                      7      Sole Voting Power
 Number of                          2,544,300
   Shares
Beneficially          8      Shared Voting Power
  Owned By                          579,600
    Each
  Reporting           9      Sole Dispositive Power
   Person                                   2,544,300
    With
                      10     Shared Dispositive Power
                                    579,600

11      Aggregate Amount Beneficially Owned by Each Reporting Person

                                    3,123,900

12      Check Box If the Aggregate  Amount in Row (11) Excludes  Certain Shares*
        [x]

13      Percent of Class Represented By Amount in Row (11)

                             3.98%

14      Type of Reporting Person*

               IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                                                             Page 13 of 23 Pages


          This  Amendment  No. 3 to  Schedule  13D  relates  to shares of Common
Stock,  $0.001  par  value  per share  (the  "Shares"),  of  Sybase,  Inc.  (the
"Issuer").  This Amendment No. 3 supplementally  amends the initial statement on
Schedule 13D dated  December 2, 1996 and all amendments  thereto  (collectively,
the "Initial  Statement")  filed by certain of the Reporting Persons (as defined
herein).  This Amendment No. 3 is being filed by the Reporting Persons to report
that (i) as a result of recent  dispositions of Shares from accounts  managed by
certain of the Reporting  Persons,  on April 11, 1997, the number of Shares (the
"Prior  Amount")  of  which  the  Reporting  Persons  may  be  deemed  to be the
beneficial  owners had  decreased  by more than one  percent of the  outstanding
Shares and (ii) as a result of subsequent acquisitions of Shares after that date
for the accounts of certain Reporting Persons, the number of Shares of which the
Reporting  Persons  currently may be deemed the beneficial  owners has increased
from the Prior Amount.  Capitalized terms used but not defined herein shall have
the meanings ascribed to them in the Initial Statement. The Initial Statement is
supplementally amended as follows.

Item 2.        Identity and Background.

          This  statement  is being  filed on  behalf  of each of the  following
persons (collectively, the "Reporting Persons"):

i)      Quantum Industrial Partners LDC ("QIP");

ii)     QIH Management Investor, L.P. ("QIHMI");

iii)    QIH Management, Inc. ("QIH Management");

iv)     Soros Fund Management LLC ("SFM LLC");

v)      George Soros ("Mr. Soros");

vi)     Stanley F. Druckenmiller ("Mr. Druckenmiller");

vii)    Winston Partners II LDC ("Winston LDC");

viii)   Winston Partners II LLC ("Winston LLC");

ix)     Chatterjee Advisors LLC ("Chatterjee Advisors");

x)      Chatterjee Management Company ("Chatterjee Management"); and

xi)     Purnendu Chatterjee ("Dr. Chatterjee").


          Updated  information  concerning the Managing  Directors of SFM LLC is
attached hereto as Annex A and incorporated herein by reference.




<PAGE>


                                                             Page 14 of 23 Pages

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

          Mr. Soros expended  approximately  $8,140,258 of his personal funds to
purchase  the  Shares  reported  herein as being  acquired  in the last 60 days.
Winston LDC expended approximately $5,392,587 of its working capital to purchase
the Shares  reported  herein as being acquired in the last 60 days.  Winston LLC
expended approximately  $2,768,620 of its working capital to purchase the Shares
reported herein as being acquired in the last 60 days.

Item 5.        Interest in Securities of the Issuer.

          (a) (i) Each of QIP, QIHMI and QIH Management may be deemed beneficial
owner of the 579,600 Shares held for the account of QIP  (approximately  .74% of
the total number of Shares outstanding).

              (ii)  Each  of SFM LLC and Mr.  Druckenmiller  may be  deemed  the
beneficial owner of 1,295,800 Shares (approximately 1.65% of the total number of
Shares  outstanding).  This number  consists of (A) 716,200  Shares held for the
account of Quantum Partners, and (B) 579,600 Shares held for the account of QIP.

              (iii) Mr.  Soros may be deemed the  beneficial  owner of 3,095,800
Shares  (approximately  3.95% of the total number of Shares  outstanding).  This
number  consists of (A)  1,800,000  Shares held for his  personal  account,  (B)
716,200 Shares held for the account of Quantum Partners,  and (C) 579,600 Shares
held for the account of QIP.

              (iv)  Winston  LDC  may be  deemed  the  beneficial  owner  of the
1,706,747  Shares  currently  held for its account  (approximately  2.18% of the
total number of Shares outstanding).

              (v) Winston LLC may be deemed the beneficial  owner of the 837,553
Shares currently held for its account  (approximately  1.07% of the total number
of Shares outstanding).



<PAGE>


                                                             Page 15 of 23 Pages

              (vi) Each of Chatterjee Advisors and Chatterjee  Management may be
deemed the  beneficial  owner of 2,544,300  Shares  (approximately  3.24% of the
total  number of Shares  outstanding).  This number  consists  of (A)  1,706,747
Shares held for the  account of Winston LDC and (B) 837,553  Shares held for the
account of Winston LLC.

              (vii)  Dr.  Chatterjee  may be  deemed  the  beneficial  owner  of
3,123,900   Shares   (approximately   3.98%  of  the  total   number  of  Shares
outstanding).  This number consists of (A) 1,706,747 Shares held for the account
of Winston LDC,  (B) 837,553  Shares held for the account of Winston LLC and (C)
579,600 Shares held for the account of QIP.

          (b) (i) Each of QIP, QIHMI, QIH Management,  SFM LLC (by virtue of the
QIP  contract),  Mr.  Soros  (as  result  of his  position  with SFM  LLC),  Mr.
Druckenmiller  (as a result of his position with SFM LLC) and Dr. Chatterjee (as
a result of his position as a sub-investment  advisor to QIP with respect to the
Shares)  may be  deemed  to have the  shared  power to  direct  the  voting  and
disposition of the 579,600 Shares held for the account of QIP.

              (ii)  Pursuant to the contract  between  Quantum Fund and SFM LLC,
SFM LLC may be deemed to have sole power to direct the voting and disposition of
the 716,200 Shares held for the account of Quantum Partners.

              (iii)  Pursuant to the contract  between  Quantum Fund and SFM LLC
and as a result of the positions  held by Mr. Soros and Mr.  Druckenmiller  with
SFM LLC,  each of Mr. Soros and Mr.  Druckenmiller  may be deemed to have shared
power to direct the voting and  disposition  of the 716,200  Shares held for the
account of Quantum Partners.

              (iv) Mr.  Soros holds the sole power to vote and to dispose of the
1,800,000 Shares held for his personal account.

              (v) Each of  Winston  LDC,  Chatterjee  Advisors  (as  manager  of
Winston LDC),  Chatterjee  Management (as investment advisor to Winston LDC) and
Dr. Chatterjee (as the person ultimately in control of both Chatterjee  Advisors
and  Chatterjee  Management)  may be deemed to have the sole power to direct the
voting and  disposition of the 1,706,747  Shares held for the account of Winston
LDC.

              (vi) Each of  Winston  LLC,  Chatterjee  Advisors  (as  manager of
Winston LLC),  Chatterjee  Management (as investment advisor to Winston LLC) and
Dr. Chatterjee (as the person ultimately in control of both Chatterjee  Advisors
and  Chatterjee  Management)  may be deemed to have the sole power to direct the
voting and  disposition  of the  837,553  Shares held for the account of Winston
LLC.

          (c) Except for the  transactions  disclosed on Annex B hereto,  all of
which  were  effected  in  the  over-the-counter  market  in  routine  brokerage
transactions,  there have been no transactions  with respect to the Shares since
February  20,  1997 (60 days prior to the date  hereof) by any of the  Reporting
Persons or, to the best of the Reporting Persons'  knowledge,  any other persons
identified in response to Item 2 of the Initial Statement.



<PAGE>


                                                             Page 16 of 23 Pages

          (d) (i) The shareholders of QIP, including Quantum Industrial Holdings
Ltd., a British Virgin Islands international business company, have the right to
participate in the receipt of dividends  from, or proceeds from the sale of, the
Shares held for the account of QIP in accordance with their ownership  interests
in QIP.

              (ii) Mr. Soros has the sole right to participate in the receipt of
dividends  from,  or proceeds from the sale of, the Shares held for his personal
account.

              (iii) The  shareholders  of Quantum  Partners,  including  Quantum
Fund,  have the right to  participate  in the  receipt  of  dividends  from,  or
proceeds  from the sale of, the Shares held for the account of Quantum  Partners
in accordance with their ownership interests in Quantum Partners.

              (iv) The shareholders of Winston LDC,  including  Winston Partners
II Offshore Ltd., a British Virgin Islands  international  business corporation,
have the right to participate in the receipt of dividends from, or proceeds from
the sale of, the Shares held for the account of Winston LDC in  accordance  with
their ownership interests in Winston LDC.

              (v) The  members of Winston LLC have the right to  participate  in
the receipt of dividends from, or proceeds from the sale of, the Shares held for
the account of Winston  LLC in  accordance  with their  ownership  interests  in
Winston LLC.

          (e) Not applicable.

          Each of SFM LLC and Mr.  Druckenmiller  expressly disclaims beneficial
ownership  of any Shares not held  directly  for the accounts of the SFM Clients
and the account of QIP. Mr. Soros expressly  disclaims  beneficial  ownership of
any Shares not held  directly for his  account,  the accounts of the SFM Clients
and  the  account  of  QIP.  Each of QIP,  QIHMI  and QIH  Management  expressly
disclaims  beneficial  ownership of any Shares not held directly for the account
of QIP.  Each of Winston  LDC and  Winston LLC  expressly  disclaims  beneficial
ownership of any Shares not held  directly for its account.  Each of  Chatterjee
Advisors and Chatterjee  Management  expressly disclaims beneficial ownership of
any Shares not held  directly  for the  accounts of Winston LDC and Winston LLC.
Dr. Chatterjee  expressly disclaims  beneficial ownership of any Shares not held
directly for the accounts of QIP, Winston LDC and Winston LLC.



<PAGE>


                                                             Page 17 of 23 Pages

Item 7.     Material to be Filed as Exhibits.

          (a) Power of Attorney dated as of January 1, 1997 granted by Mr. Soros
in favor of Mr.  Sean C.  Warren and Mr.  Michael C. Neus (filed as Exhibit A to
Amendment No. 1 and incorporated herein by reference).

          (b) Power of  Attorney  dated as of  January  1, 1997  granted  by Mr.
Druckenmiller  in favor of Mr. Sean C. Warren and Mr.  Michael C. Neus (filed as
Exhibit B to Amendment No. 1 and incorporated herein by reference).

          (c) Joint  Filing  Agreement  dated  January 1, 1997 by and among QIP,
QIHMI,  QIH  Management,  SFM LLC, Mr. Soros,  Mr.  Druckenmiller,  Winston LDC,
Winston LLC,  Chatterjee  Advisors,  Chatterjee  Management  and Dr.  Chatterjee
(filed as Exhibit C to Amendment No. 1 and incorporated herein by reference).

          (d) Power of Attorney  dated May 23,  1996  granted by QIP in favor of
Mr. Gary  Gladstein and Mr. Sean Warren and Mr. Michael Neus (filed as Exhibit C
to the Initial Statement and incorporated herein by reference).

          (e) Power of Attorney dated May 31, 1995 granted by Dr.  Chatterjee in
favor of Mr.  Peter  Hurwitz  (filed as Exhibit D to the Initial  Statement  and
incorporated herein by reference).

          (f) Power of  Attorney  dated  October  25,  1996  granted  by Winston
Partners  II LDC in favor of Mr.  Peter A.  Hurwitz  (filed as  Exhibit E to the
Initial Statement and incorporated herein by reference).



<PAGE>


                                                             Page 18 of 23 Pages

                                   SIGNATURES

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


Dated: April 21, 1997              QUANTUM INDUSTRIAL PARTNERS LDC


                                   By:  /S/ SEAN C. WARREN
                                        --------------------------------------
                                        Sean C. Warren
                                        Attorney-in-Fact


                                   QIH MANAGEMENT INVESTOR, L.P.

                                   By: QIH Management, Inc.,
                                       its General Partner


                                       By:   /S/ SEAN C. WARREN
                                             ---------------------------------
                                             Sean C. Warren
                                             Vice President


                                   QIH MANAGEMENT, INC.



                                   By:  /S/ SEAN C. WARREN
                                        --------------------------------------
                                        Sean C. Warren
                                        Vice President


                                   SOROS FUND MANAGEMENT LLC


                                   By:  /S/ SEAN C. WARREN
                                        --------------------------------------
                                        Sean C. Warren
                                        Managing Director


                                   GEORGE SOROS


                                   By:  /S/ SEAN C. WARREN
                                        --------------------------------------
                                        Sean C. Warren
                                        Attorney-in-Fact



<PAGE>


                                                             Page 19 of 23 Pages

                                   STANLEY F. DRUCKENMILLER



                                   By:  /S/ SEAN C. WARREN
                                        --------------------------------------
                                        Sean C. Warren
                                        Attorney-in-Fact


                                    WINSTON PARTNERS II LDC


                                    By: /S/ PETER HURWITZ
                                        --------------------------------------
                                        Peter Hurwitz
                                        Attorney-in-Fact


                                    WINSTON PARTNERS II LLC

                                    By: Chatterjee Advisors LLC, its Manager


                                    By: /S/ PETER HURWITZ
                                        --------------------------------------
                                        Peter Hurwitz
                                        Manager


                                    CHATTERJEE ADVISORS LLC


                                    By: /S/ PETER HURWITZ
                                        --------------------------------------
                                        Peter Hurwitz
                                        Manager


                                    CHATTERJEE MANAGEMENT COMPANY


                                    By: /S/ PETER HURWITZ
                                        --------------------------------------
                                        Peter Hurwitz
                                        Vice President


                                    PURNENDU CHATTERJEE


                                    By: /S/ PETER HURWITZ
                                        --------------------------------------
                                        Peter Hurwitz
                                        Attorney-in-Fact


<PAGE>


                                                             Page 20 of 23 Pages

                                     ANNEX A


          The  following  is a list of all of the persons  (other  than  Stanley
Druckenmiller) who serve as Managing Directors of SFM LLC, as well as the number
of Shares, if any, held for the account of each:

                                                          Number of Shares
        Scott K. H. Bessent
        Walter Burlock
        Brian J. Corvese
        Jeffrey L. Feinberg
        Arminio Fraga
        Gary Gladstein..................................... 7,000
        Ron Hiram
        Robert K. Jermain
        David N. Kowitz
        Alexander C. McAree
        Paul McNulty
        Gabriel S. Nechamkin
        Steven Okin
        Dale Precoda
        Lief D. Rosenblatt
        Mark D. Sonnino
        Filiberto H. Verticelli
        Sean C. Warren

Each of the  above-listed  persons is a United States  citizen  whose  principal
occupation  is serving as Managing  Director of SFM LLC, and each has a business
address c/o Soros Fund Management LLC, 888 Seventh Avenue, 33rd Floor, New York,
New York 10106.

To the best of the Reporting Persons' knowledge:

        (a) The consideration  used for purchasing the Shares reported above was
        the personal funds of the Managing Director who purchased such Shares.

        (b) All of the  Shares  reported  above  were  acquired  for  investment
        purposes.

        (c) The Managing  Director (i) holds the Shares  reported above as being
        held for his own account,  (ii) has the sole power to vote or dispose of
        such Shares and has the right to receive the dividends from, or proceeds
        from  the  sale  of,  the  Shares,   and  (iii)  has  not  effected  any
        transactions in the Shares since February 20, 1997, 60 days prior to the
        date hereof on Schedule 13D by the Reporting Persons.

        (d) None of the  Managing  Directors  has any  contracts,  arrangements,
        understandings or relationships with respect to the Shares.



<PAGE>


                                                             Page 21 of 23 Pages
<TABLE>
<CAPTION>

                                            ANNEX B

                           RECENT TRANSACTIONS IN THE COMMON STOCK OF
                                          SYBASE, INC.

                                  Date of       Nature of        Number             Price
For the Account of              Transaction    Transaction      of Shares         Per Share
- ------------------              -----------    -----------      ---------         ---------
<S>                            <C>            <C>              <C>               <C>
Quantum Partners LDC/1/         04/08/97         Sale             13,800           14.976
                                04/09/97         Sale             21,300           13.999
                                04/09/97         Sale             14,600           13.992
                                04/10/97         Sale              7,400           12.665
                                04/10/97         Sale             33,500           12.664
                                04/10/97         Sale              6,600           12.664
                                04/10/97         Sale              6,600           12.664
                                04/10/97         Sale              6,600           12.664
                                04/10/97         Sale             10,300           12.663
                                04/10/97         Sale             36,900           13.032
                                04/11/97         Sale              8,400           12.961
                                04/11/97         Sale              6,600           12.961
                                04/11/97         Sale              4,800           12.961
                                04/11/97         Sale             22,600           12.962
                                04/11/97         Sale              9,450           12.961
                                04/11/97         Sale              9,350           12.963
                                04/11/97         Sale             13,150           12.724
                                04/11/97         Sale             22,350           12.724
                                04/14/97         Sale              7,100           12.999
                                04/14/97         Sale              8,400           12.924
                                04/14/97         Sale             18,400           12.999
                                04/14/97         Sale             17,100           12.999
                                04/15/97         Sale             11,025           13.124
                                04/15/97         Sale              3,175           13.124
                                04/15/97         Sale             14,300           12.994

Quantum Industrial
Partners LDC/1/                 04/08/97         Sale              9,450           14.976
                                04/08/97         Sale              1,650           14.976
                                04/09/97         Sale             17,250           13.999
                                04/09/97         Sale              3,600           13.992
                                04/09/97         Sale              8,200           13.992
                                04/10/97         Sale             48,050           12.664
                                04/10/97         Sale              9,450           12.664
                                04/10/97         Sale             18,675           13.032
                                04/10/97         Sale             11,225           13.032
                                04/11/97         Sale              7,525           12.961
                                04/11/97         Sale             42,075           12.962
                                04/11/97         Sale             28,750           12.724
                                04/14/97         Sale              5,800           12.999
                                04/14/97         Sale              4,000           12.924
                                04/14/97         Sale              2,800           12.924
                                04/14/97         Sale              6,575           12.999


<PAGE>


                                                                            Page 22 of 23 Pages

                                04/14/97         Sale              3,200           12.999
                                04/14/97         Sale              9,375           12.999
                                04/14/97         Sale              3,750           12.999
                                04/14/97         Sale              5,900           12.999
                                04/15/97         Sale             11,500           13.124
                                04/15/97         Sale              9,450           12.994
                                04/15/97         Sale              2,150           12.993

Winston
Partners II LDC/2/              04/16/97         Buy               9,300           14.125
                                04/17/97         Buy             131,100           14.708
                                04/17/97         Buy               3,300           14.395
                                04/17/97         Buy              36,000           14.511
                                04/18/97         Buy             164,150           15.399
                                04/18/97         Buy               1,900           15.332
                                04/18/97         Buy              13,400           15.500

Winston
Partners II LLC/2/              04/16/97         Buy               4,600           14.125
                                04/17/97         Buy              69,300           14.708
                                04/17/97         Buy               1,700           14.395
                                04/17/97         Buy              19,000           14.511
                                04/18/97         Buy              82,250           15.399
                                04/18/97         Buy               1,000           15.332
                                04/18/97         Buy               6,600           15.500

George Soros                    04/08/97         Sale             23,600           14.976
                                04/09/97         Sale             23,950           13.992
                                04/09/97         Sale              1,150           13.993
                                04/09/97         Sale              5,100           13.999
                                04/09/97         Sale             16,500           13.999
                                04/09/97         Sale              3,400           13.999
                                04/09/97         Sale              3,400           13.999
                                04/09/97         Sale              3,400           13.999
                                04/09/97         Sale              4,650           13.999
                                04/10/97         Sale              2,250           12.665
                                04/10/97         Sale              2,200           12.666
                                04/10/97         Sale             10,440           12.665
                                04/10/97         Sale             12,500           12.664
                                04/10/97         Sale              9,500           12.664
                                04/10/97         Sale             84,650           12.664
                                04/10/97         Sale             63,200           13.032
                                04/11/97         Sale             63,900           12.962
                                04/11/97         Sale             23,000           12.962
                                04/11/97         Sale             17,800           12.961
                                04/11/97         Sale              4,650           12.724
                                04/11/97         Sale             42,500           12.724
                                04/11/97         Sale              5,000           12.723
                                04/11/97         Sale              8,600           12.725
                                04/14/97         Sale             12,100           12.999
                                04/14/97         Sale              5,600           12.924


<PAGE>


                                                                            Page 23 of 23 Pages

                                04/14/97         Sale              8,700           12.924
                                04/14/97         Sale             16,300           12.999
                                04/14/97         Sale              2,600           12.998
                                04/14/97         Sale              7,500           12.999
                                04/14/97         Sale              2,500           13.000
                                04/14/97         Sale             20,700           12.999
                                04/14/97         Sale             11,100           12.999
                                04/15/97         Sale             24,300           13.124
                                04/15/97         Sale             24,400           12.994
                                04/16/97         Buy              10,000           13.957
                                04/16/97         Buy             300,000           14.164
                                04/16/97         Buy             225,000           14.407
                                04/16/97         Buy              36,100           14.125


- ------------------- 
/1/  Transactions effected at the direction of SFM LLC.
/2/  Transactions effected at the direction of Chatterjee Management.
</TABLE>


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