VERSANT OBJECT TECHNOLOGY CORP
SC 13G, 1997-02-13
PREPACKAGED SOFTWARE
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<PAGE>   1
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                  SCHEDULE 13G
 
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO.  )*
 
                     Versant Object Technology Corporation
- --------------------------------------------------------------------------------
                                (Name of Issuer)
 
                           Common Stock, No Par Value
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)
 
                                  925284 10 1
- --------------------------------------------------------------------------------
                                 (CUSIP Number)
 
Check the following box if a fee is being paid with this / / statement. (A fee
is not required only if the filing 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.)
 
*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 the
disclosures provided in a prior cover page.
 
The information required in 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 4 Pages
 
SEC 1745 (10-85)
<PAGE>   2
 
CUSIP NO. 925284 10 1                13G                      PAGE 2 OF 4 PAGES
 
<TABLE>
<S> <C>
- --------------------------------------------------------------------------------------------------------------
  1   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     
      Advent VI L.P.                                                        51-0309893
      Advent Atlantic and Pacific Limited Partnership                       04-2928123
      TA Venture Investors Limited Partnership                              04-3068354                        
- --------------------------------------------------------------------------------------------------------------
  2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 
      (a)  /X/       (b)  / /
- --------------------------------------------------------------------------------------------------------------
  3   SEC USE ONLY
- --------------------------------------------------------------------------------------------------------------
  4   CITIZENSHIP OR PLACE OF ORGANIZATION

      Advent VI L.P.                                                        Delaware
      Advent Atlantic and Pacific Limited Partnership                       Ontario
      TA Venture Investors Limited Partnership                              Massachusetts                     
- --------------------------------------------------------------------------------------------------------------
                     5     SOLE VOTING POWER

                           Advent VI L.P.                                    801,543
                           Advent Atlantic and Pacific Limited Partnership   256,937
                           TA Venture Investors Limited Partnership            9,626
      
                     ------------------------------------------------------------------------------------------
      NUMBER OF      6     SHARED VOTING POWER                                                                 
       SHARES              
    BENEFICIALLY           N/A
      OWNED BY       ------------------------------------------------------------------------------------------
        EACH         7     SOLE DISPOSITIVE POWER                                                              
      REPORTING      
       PERSON              Advent VI L.P.                                    801,543
        WITH               Advent Atlantic and Pacific Limited Partnership   256,937
                           TA Venture Investors Limited Partnership            9,626
                     ------------------------------------------------------------------------------------------
                     8     SHARED DISPOSITIVE POWER 

                           N/A
- ---------------------------------------------------------------------------------------------------------------
  9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      Advent VI L.P.                                                         801,543
      Advent Atlantic and Pacific Limited Partnership                        256,937   
      TA Venture Investors Limited Partnership                                 9,626 
- --------------------------------------------------------------------------------------------------------------
 10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------------------------------------
 11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

      Advent VI L.P.                                                            8.42
      Advent Atlantic and Pacific Limited Partnership                           2.70         
      TA Venture Investors Limited Partnership                                   .10               
- --------------------------------------------------------------------------------------------------------------
 12   TYPE OF REPORTING PERSON

      Each entity is a Limited Partnership
- --------------------------------------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------------------------------------
</TABLE>
 
                      *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>   3
 
SCHEDULE 13G                                                   Page 3 of 4 Pages
 
<TABLE>
<S>         <C>    <C>
Item 1:     (a)    Name of Issuer: Versant Object Technology Corporation

            (b)    Address of Issuer's Principal Executive Offices:
                                            210 Twin Dolphin Drive
                                              Menlo Park, CA 94065

Item 2:     (a)    Name of Person Filing:

                   Advent VI L.P.                           
                   Advent Atlantic and Pacific Limited Partnership      
                   TA Venture Investors Limited Partnership 

            (b)    Address of Principal Business Office or, if none, Residence:

                   c/o TA Associates
                   125 High Street, Suite 2500
                   Boston, MA 02110

            (c)    Citizenship:  Not Applicable
                                 
            (d)    Title of Class of Securities: Common Stock, No Par Value

            (e)    CUSIP Number: 925284 10 1

Item 3:            IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b) OR
                   13d-2(b), CHECK WHETHER THE PERSON FILING IS A: Not Applicable

Item 4:     (a)    Amount Beneficially Owned:                      COMMON STOCK
                                                                   ------------
                   Advent VI L.P.                                     801,543  
                   Advent Atlantic and Pacific Limited Partnership    256,937
                   TA Venture Investors Limited Partnership             9,626

            (b)    Percent of Class:                               PERCENTAGE 
                                                                   ----------
                   Advent VI L.P.                                     8.42
                   Advent Atlantic and Pacific Limited Partnership    2.70
                   TA Venture Investors Limited Partnership            .10

            (c)    Number of shares as to which such person has:

                   (i) sole power to vote or direct the vote:      COMMON STOCK
                                                                   ------------
                   Advent VI L.P.                                     801,543
                   Advent Atlantic and Pacific Limited Partnership    256,937
                   TA Venture Investors Limited Partnership             9,626

                   (ii)  SHARED POWER TO VOTE OR DIRECT THE VOTE:       N/A
                   (iii) SOLE POWER TO DISPOSE OR DIRECT THE 
                         DISPOSITION:                              COMMON STOCK
                                                                   ------------
                   Advent VI L.P.                                     801,543
                   Advent Atlantic and Pacific Limited Partnership    256,937
                   TA Venture Investors Limited Partnership             9,626

                   (iv)  SHARED POWER TO DISPOSE OR DIRECT THE 
                         DISPOSITION                                    N/A

Item 5:            OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: Not Applicable

Item 6:            OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
                   PERSON: Not Applicable

<FN> 
- ---------------
* This Schedule 13G is filed pursuant to Rule 13d-1(f) on behalf of ___________.
</TABLE>
<PAGE>   4
 
SCHEDULE 13G                                                   Page 4 of 4 Pages
 
<TABLE>
<S>         <C>    <C>
Item 7:            Identification and Classification of the Subsidiary Which Acquired
                   the Security Being Reported on By the Parent Holding Company:
                   Not Applicable

Item 8:            Identification and Classification of Members of the Group:
                   This schedule 13G is filed pursuant to Rule 13d-1(c). For the
                   agreement of group members to a joint filing, see below.

Item 9:            Notice of Dissolution of Group: Not Applicable


Item 10:           Certification: Not Applicable
</TABLE>

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.

AGREEMENT FOR JOINT FILING
Advent VI L.P. Advent Atlantic and Pacific Limited Partnership and TA Venture 
Investors Limited Partnership hereby agree that TA Associates shall file with 
the Securities and Exchange Commission a joint schedule 13G on behalf of the 
above-named parties concerning their beneficial ownership of Versant Object 
Technology Corporation.

Dated:


ADVENT VI L.P.
By: TA Associates VI L.P., its General Partner
By: TA Associates, Inc. its General Partner

By: /s/ Katherine S. Cromwell
    ----------------------------------------------------
    Katherine S. Cromwell, Managing Director

Advent Atlantic and Pacific Limited Partnership
By: TA Associates AAP Limited Partnership, its
General Partner
By: TA Associates, AAP Venture Limited
Partnership, its General Partner
By: TA Associates, Inc., its General Partner

By: /s/ Katherine S. Cromwell
    ----------------------------------------------------
    Katherine S. Cromwell, Managing Director

TA VENTURE INVESTORS LIMITED PARTNERSHIP

By: /s/ Katherine S. Cromwell
    ----------------------------------------------------
    Katherine S. Cromwell,  General Partner
 


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