SUMMIT VENTURES IV LP
SC 13G, 1999-02-12
Previous: PRUCO LIFE FLEXIBLE PREMIUM VARIABLE ANNUITY ACCOUNT, 485APOS, 1999-02-12
Next: SUMMIT VENTURES IV LP, SC 13G, 1999-02-12



<PAGE>   1
                                                       OMB APPROVAL
                                              OMB Number:        3235-0145
                                              Expires:     August 31, 1999
                                              Estimated average burden
                                              hours per response ... 14.90




                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13G


                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. )*

                             Aspec Technology, Inc.
                                (Name of Issuer)

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

                                    045233103
                                 (CUSIP Number)

                                December 31, 1998
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

               / /    Rule 13d-1(b)
               / /    Rule 13d-1(c)
               /X/    Rule 13d-1(d)

*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).


                               Page 1 of 32 Pages
<PAGE>   2
CUSIP NO. 045233103                13G                 Page 2 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Summit Ventures IV, L.P.

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

- -------------------------------------------------------------------------------
 3      SEC USE ONLY

- -------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 Delaware limited partnership
- -------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                    
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 PN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 2 of 32 Pages
<PAGE>   3
CUSIP NO. 045233103                13G                 Page 3 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Summit Partners IV, L.P.

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY


- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 Delaware limited partnership

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                  
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008  shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 PN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 3 of 32 Pages
<PAGE>   4
CUSIP NO. 045233103                13G                 Page 4 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Summit Investors III, L.P.

- ------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                           (a) / /
                                                           (b) / /
- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 Delaware limited partnership

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                  
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH  
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 PN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 4 of 32 Pages
<PAGE>   5
CUSIP NO. 045233103                13G                 Page 5 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Stamps, Woodsum & Co. IV

- ------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a) / /
                                                             (b) / /
- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 Massachusetts general partnership

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                    
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH  
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                       / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 PN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 5 of 32 Pages
<PAGE>   6
CUSIP NO. 045233103                13G                 Page 6 of 32 Pages
- -------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 E. Roe Stamps, IV

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                     
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares
- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 6 of 32 Pages
<PAGE>   7
CUSIP NO. 045233103                13G                 Page 7 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Stephen G. Woodsum

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                 
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING           ---------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                           ---------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- -------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 7 of 32 Pages
<PAGE>   8
CUSIP NO. 045233103                13G                 Page 8 of 32 Pages
- -------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Gregory M. Avis

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                   
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                                 / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 8 of 32 Pages
<PAGE>   9
CUSIP NO. 045233103                13G                 Page 9 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 John A. Genest

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                 
       NUMBER OF          ----------------------------------------------------
        SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                               / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 9 of 32 Pages
<PAGE>   10
CUSIP NO. 045233103                13G                 Page 10 of 32 Pages
- ------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Martin J. Mannion

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

- ------------------------------------------------------------------------------
 3      SEC USE ONLY

- ------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
                   
       NUMBER OF          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares
          EACH
       REPORTING          ----------------------------------------------------
         PERSON            7    SOLE DISPOSITIVE POWER
          WITH   
                                         0 shares

                          ----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                              Page 10 of 32 Pages
<PAGE>   11
CUSIP NO. 045233103                13G                 Page 11 of 32 Pages
- ------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Bruce R. Evans

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

- ------------------------------------------------------------------------------
  3     SEC USE ONLY

- ------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
       NUMBER OF
                          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares

                          ----------------------------------------------------
          EACH             7    SOLE DISPOSITIVE POWER
       REPORTING
         PERSON                          0 shares

                          ----------------------------------------------------
          WITH             8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                            / /

- ------------------------------------------------------------------------------
   11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
   12   TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                              Page 11 of 32 Pages
<PAGE>   12
CUSIP NO. 045233103                13G                 Page 12 of 32 Pages
- ------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Thomas S. Roberts

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

- ------------------------------------------------------------------------------
  3     SEC USE ONLY

- ------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
       NUMBER OF
                          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares

                          ----------------------------------------------------
          EACH             7    SOLE DISPOSITIVE POWER
       REPORTING
         PERSON                          0 shares

                          ----------------------------------------------------
          WITH             8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
  10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                                  / /

- ------------------------------------------------------------------------------
   11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
   12   TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                              Page 12 of 32 Pages
<PAGE>   13
CUSIP NO. 045233103                13G                 Page 13 of 32 Pages
- ------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Walter G. Kortschak

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

- -------------------------------------------------------------------------------
  3     SEC USE ONLY

- ------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
       NUMBER OF
                          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares

                          ----------------------------------------------------
          EACH             7    SOLE DISPOSITIVE POWER
       REPORTING
         PERSON                          0 shares

                          ----------------------------------------------------
          WITH             8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                                    / /

- ------------------------------------------------------------------------------
   11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
   12   TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


                              Page 13 of 32 Pages
<PAGE>   14
CUSIP NO. 045233103                13G                 Page 14 of 32 Pages
- ------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Joseph F. Trustey

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

- ------------------------------------------------------------------------------
  3     SEC USE ONLY

- ------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States

- ------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                         0 shares
       NUMBER OF
                          ----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                         2,601,008 shares

                          ----------------------------------------------------
          EACH             7    SOLE DISPOSITIVE POWER
       REPORTING
         PERSON                          0 shares

                          ----------------------------------------------------
          WITH             8    SHARED DISPOSITIVE POWER

                                         2,601,008 shares

- ------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 2,601,008 shares

- ------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                       / /

- ------------------------------------------------------------------------------
   11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                 9.15%

- ------------------------------------------------------------------------------
   12   TYPE OF REPORTING PERSON *

                 IN

- ------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 14 of 32 Pages
<PAGE>   15
                                  Schedule 13G


Item 1(a).        Name of Issuer:  Aspec Technology, Inc.

Item 1(b).        Address of Issuer's Principal Executive Offices: 830 E. Arques
                  Ave., Sunnyvale, CA 94086.

Item 2(a).        Names of Persons Filing: Summit Ventures IV, L.P., Summit
                  Partners IV, L.P., Summit Investors III, L.P., Stamps, Woodsum
                  & Co. IV and Messrs. E. Roe Stamps, IV, Stephen G. Woodsum,
                  Gregory M. Avis, John A. Genest, Martin J. Mannion, Bruce R.
                  Evans, Thomas S. Roberts, Walter G. Kortschak and Joseph F.
                  Trustey.

                  Summit Partners IV, L.P. is the sole general partner of Summit
                  Ventures IV, L.P. Stamps, Woodsum & Co. IV is the sole general
                  partner of Summit Partners IV, L.P. Messrs. Stamps, Woodsum,
                  Avis, Genest, Mannion, Evans, Roberts, Kortschak, and Trustey
                  are individual general partners of Stamps, Woodsum & Co. IV
                  and Summit Investors III, L.P.

Item 2(b).        Address of Principal Business Office or, if None, Residence:
                  The address of the principal business office of Summit
                  Ventures IV, L.P., Summit Partners IV, L.P., Summit Investors
                  III, L.P., Stamps, Woodsum & Co. IV and Messrs. Stamps,
                  Woodsum, Mannion, Genest, Evans, Roberts and Trustey is Summit
                  Partners, 600 Atlantic Avenue, Boston, Massachusetts 02210.
                  The address of the principal business office of Messrs. Avis
                  and Kortschak is Summit Partners, 499 Hamilton Avenue, Palo
                  Alto, California 94301.

Item 2(c).        Citizenship: Each of Summit Ventures IV, L.P., Summit Partners
                  IV, L.P. and Summit Investors III, L.P. is a limited
                  partnership organized under the laws of the State of Delaware.
                  Stamps, Woodsum & Co. IV is a general partnership organized
                  under the laws of the Commonwealth of Massachusetts. Each of
                  Messrs. Stamps, Woodsum, Avis, Mannion, Genest, Evans,
                  Roberts, Kortschak and Trustey is a United States citizen.

Item 2(d).        Title of Class of Securities:  Common Stock, $.001 Par Value.

Item 2(e).        CUSIP Number:  045233103

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.

                              Page 15 of 32 Pages
<PAGE>   16
Item 4.           Ownership.
                  (a)   Amount Beneficially Owned:

                        Each of Summit Ventures IV, L.P., Summit Partners IV,
                        L.P., Stamps, Woodsum & Co. IV, and Summit Investors
                        III, L.P. (individually an "Entity" and collectively the
                        "Entities") may be deemed to own beneficially 2,601,008
                        shares of Common Stock as of December 31, 1998. Each of
                        Messrs. Stamps, Woodsum, Avis, Mannion, Genest, Evans,
                        Roberts, Kortschak and Trustey may be deemed to own
                        beneficially 2,601,008 shares of Common Stock as of
                        December 31, 1998.

                        As of December 31, 1998, Summit Ventures IV, L.P. was
                        the record holder of 2,490,724 shares of Common Stock.
                        As of December 31, 1998 Summit Investors III, L.P. was
                        the record holder of 110,284 shares of Common Stock. The
                        shares held of record by Summit Ventures IV, L.P. and
                        Summit Investors III, L.P. are referred to herein
                        collectively as the "Record Shares." By virtue of the
                        affiliate relationships among the Entities, each Entity
                        may be deemed to own beneficially all of the Record
                        Shares. Hence, each Entity may be deemed to own
                        beneficially 2,601,008 shares of Common Stock. In their
                        capacities as individual general partners of Stamps,
                        Woodsum & Co. IV and Summit Investors III, L.P. each of
                        Messrs. Stamps, Woodsum, Avis, Mannion, Genest, Evans,
                        Roberts, Kortschak and Trustey may be deemed to own
                        beneficially 2,601,008 shares of Common Stock.

                        Each of the reporting persons expressly disclaims
                        beneficial ownership of any shares of Common Stock of
                        Aspec Technology, Inc. except in the case of Summit
                        Ventures IV, L.P., for the 2,490,724 shares which it
                        holds of record, and in the case of Summit Investors
                        III, L.P., for the 110,284 shares which it holds of
                        record.

      (b) Percent of Class:

                        Summit Ventures IV, L.P.: 9.15%
                        Summit Partners IV, L.P.: 9.15%
                        Stamps, Woodsum & Co. IV: 9.15%
                        Summit Investors III, L.P.: 9.15%
                        E. Roe Stamps, IV: 9.15%
                        Stephen G. Woodsum: 9.15%
                        Martin J. Mannion: 9.15%
                        John A. Genest: 9.15%
                        Gregory M. Avis: 9.15%

                              Page 16 of 32 Pages
<PAGE>   17
                        Bruce R. Evans: 9.15%
                        Walter G. Kortschak: 9.15%
                        Thomas S. Roberts: 9.15%
                        Joseph F. Trustey: 9.15%

                        The foregoing percentages are calculated based on the
                        28,416,027 shares of Common Stock reported to be
                        outstanding in a Form 10-Q for the quarter ended August
                        31, 1998.

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

                        (i)    sole power to vote or to direct the vote:

                               0 shares for each reporting person

                        (ii) shared power to vote or to direct the vote:

                                    Summit Ventures IV, L.P.: 2,601,008 shares
                                    Summit Partners IV, L.P.: 2,601,008 shares
                                    Stamps, Woodsum & Co. IV: 2,601,008 shares
                                    Summit Investors III, L.P.: 2,601,008 shares
                                    E. Roe Stamps, IV: 2,601,008 shares
                                    Stephen G. Woodsum: 2,601,008 shares
                                    Martin J. Mannion: 2,601,008 shares
                                    John A. Genest: 2,601,008 shares
                                    Gregory M. Avis: 2,601,008 shares
                                    Bruce R. Evans: 2,601,008 shares
                                    Walter G. Kortschak: 2,601,008 shares
                                    Thomas S. Roberts: 2,601,008 shares
                                    Joseph F. Trustey: 2,601,008 shares

                  (iii) sole power to dispose or direct the disposition of:

                        0 shares for each reporting person

                  (iv) shared power to dispose or direct the disposition of:

                                    Summit Ventures IV, L.P.: 2,601,008 shares
                                    Summit Partners IV, L.P.: 2,601,008 shares
                                    Stamps, Woodsum & Co. IV: 2,601,008 shares
                                    Summit Investors III, L.P.: 2,601,008 shares
                                    E. Roe Stamps, IV: 2,601,008 shares
                                    Stephen G. Woodsum: 2,601,008 shares
                                    Martin J. Mannion: 2,601,008 shares
                                    John A. Genest: 2,601,008 shares

                              Page 17 of 32 Pages
<PAGE>   18
                                    Gregory M. Avis: 2,601,008 shares
                                    Bruce R. Evans: 2,601,008 shares
                                    Walter G. Kortschak: 2,601,008 shares
                                    Thomas S. Roberts: 2,601,008 shares
                                    Joseph F. Trustey: 2,601,008 shares

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.

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.

                  Not Applicable. The reporting persons expressly disclaim
                  membership in a "group" as defined in Rule 13d-1(b)(ii)(H).

Item 9.           Notice of Dissolution of Group.

                  Not Applicable.

Item 10.          Certification.

                  Not Applicable. This statement on Schedule 13G is not filed
                  pursuant to Rule 13d-1(b).



                              Page 18 of 32 Pages
<PAGE>   19
                                   SIGNATURES

      After reasonable inquiry and to the best of our knowledge and belief, we
certify that the information set forth in this statement is true, complete and
correct. We also hereby agree to file this statement jointly pursuant to the
Agreement listed on Exhibit 1 hereto.

Dated:  February 10, 1999

SUMMIT VENTURES IV, L.P.                                   *                 
                                                 -----------------------------
                                                    E. Roe Stamps, IV
By:   Summit Partners IV, L.P.

By:   Stamps, Woodsum & Co. IV                               *                
                                                 -----------------------------
                                                    Stephen G. Woodsum

      By:           *                         
          ----------------------------                       *     
               E. Roe Stamps, IV                 -----------------------------
              General Partner                       Gregory M. Avis

SUMMIT INVESTORS III, L.P.
                                                             *
                                                 -----------------------------
                                                    Martin J. Mannion
By:   John A. Genest                              
      --------------------------------           /s/ John A. Genest  
      General Partner                            ------------------------------
                                                    John A. Genest

SUMMIT PARTNERS IV, L.P.
                                                             *     
                                                 -----------------------------
                                                    Bruce R. Evans
By:   Stamps, Woodsum & Co. IV

                                                             *     
                                                 -----------------------------
                                                    Walter G. Kortschak
      By:             *                       
         -------------------------------
              E. Roe Stamps
              General Partner                                 *     
                                                 -----------------------------
                                                    Thomas S. Roberts

STAMPS, WOODSUM & CO. IV
                                                              *     
                                                 -----------------------------
                                                    Joseph F. Trustey
By:                 *                       
    --------------------------------------
      E. Roe Stamps
      General Partner


                              Page 19 of 32 Pages
<PAGE>   20
                                                    *By: /s/ John A. Genest 
                                                       ------------------------
                                                         John A. Genest,
                                                         Attorney-in-Fact

- ----------
* Pursuant to Powers of Attorney on file with the Commission, which Powers of
Attorney are incorporated herein by reference. Copies of such Powers of Attorney
are attached hereto as Exhibit 2.


                              Page 20 of 32 Pages

<PAGE>   1
                                                                       Exhibit 1

                                    AGREEMENT

      Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of Common Stock of Aspec Technology, Inc.

      This agreement may be executed in any number of counterparts, each of
which shall be deemed an original.

      EXECUTED this 10th day of February, 1999.

SUMMIT VENTURES IV, L.P.                                         *         
                                                 -----------------------------
                                                        E. Roe Stamps, IV
By:   Summit Partners IV, L.P.

By:   Stamps, Woodsum & Co. IV                                   *            
                                                 -----------------------------
                                                        Stephen G. Woodsum

      By:        *                        
         -----------------------                                 *   
              E. Roe Stamps, IV                  -----------------------------
              General Partner                           Gregory M. Avis

SUMMIT INVESTORS III, L.P.
                                                                *   
                                                 -----------------------------
                                                        Martin J. Mannion
By:   /s/ John A. Genest
      ---------------------------
      General Partner                             /s/ John A. Genest
                                                 -----------------------------
SUMMIT PARTNERS IV, L.P.                              John A. Genest

By:   Stamps, Woodsum & Co. IV
                                                                 *   
                                                 -----------------------------
                                                        Bruce R. Evans
      By:          *                
         ------------------------
              E. Roe Stamps, IV
              General Partner                                     *   
                                                 -----------------------------
                                                        Walter G. Kortschak
STAMPS, WOODSUM & CO. IV

By:               *
     ----------------------------
      E. Roe Stamps, IV
      General Partner


                              Page 21 of 32 Pages
<PAGE>   2
                                                               *
                                                 -----------------------------
                                                        Thomas S. Roberts


                                                               *
                                                 -----------------------------
                                                        Joseph F. Trustey


                                                    *By: /s/ John A. Genest
                                                       -----------------------
                                                             John A. Genest,
                                                             Attorney-in-Fact


- ----------
*     Pursuant to Powers of Attorney on file with the Commission, which Powers
      of Attorney are incorporated herein by reference. Copies of such Powers of
      Attorney are attached hereto as Exhibit 2.



                              Page 22 of 32 Pages

<PAGE>   1
                                                                       Exhibit 2

                                POWER OF ATTORNEY


         KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below hereby constitutes and appoints each and any of E. Roe Stamps, IV,
Stephen G. Woodsum and John A. Genest his true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities (until revoked in writing) to
sign any and all instruments, certificates and documents required to be executed
on behalf of himself individually or on behalf of each or any of Summit
Ventures, L.P., Summit Partners, L.P., Stamps, Woodsum & Co., Summit Partners'
Holdings, L.P., Summit Ventures II, L.P., Summit Partners II, L.P., Stamps,
Woodsum & Co. II, SV Eurofund C.V., SV International, L.P., Stamps, Woodsum
International & Co., Summit Investors, L.P., Summit Investors II, L.P., Summit
Investors III, L.P., Summit Ventures III, L.P., Summit Partners III, L.P.,
Stamps, Woodsum & Co. III, Summit Ventures IV, L.P., Summit Partners IV, L.P.,
Stamps, Woodsum & Co., IV, Summit Subordinated Debt Fund, L.P., Summit Partners
SD, L.P., SW Management Corp., Summit Management Co., Summit Subordinated Debt
Fund II, L.P., and Summit Partners SD II, LLC, pursuant to sections 13 and 16 of
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any
and all regulations promulgated thereunder, and to file the same, with all
exhibits thereto, and any other documents in connection therewith, with the
Securities and Exchange Commission, and with any other entity when and if such
is mandated by the Exchange Act or by the By-laws of the National Association of
Securities Dealers, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
fully to all intents and purposes as she might or could do in person thereby
ratifying and confirming all that said attorney-in-fact and agent, or her
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.


                              Page 23 of 32 Pages
<PAGE>   2
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  E. Roe Stamps, IV
                                   -----------------------
                                   E. Roe Stamps, IV

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came E. Roe
Stamps, IV, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   ------------------------
                                   Notary Public


                                   My Commission expires: October 20, 2000
                                                          -----------------


                              Page 24 of 32 Pages
<PAGE>   3
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Stephen G. Woodsum
                                   ------------------------
                                   Stephen G. Woodsum

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came Stephen
G. Woodsum, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   -------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     


                              Page 25 of 32 Pages
<PAGE>   4
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Martin J. Mannion
                                   -------------------------
                                   Martin J. Mannion

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came Martin J.
Mannion, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   --------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     


                              Page 26 of 32 Pages
<PAGE>   5
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  John A. Genest
                                   -------------------------
                                   John A. Genest

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came John A.
Genest, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   -------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     



                              Page 27 of 32 Pages
<PAGE>   6
>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Gregory M. Avis
                                   -------------------------
                                   Gregory M. Avis

State of California      )
                         ) ss:
County of Santa Clara    )

         On this 3rd day of February, 1997, before me personally came Stephen G.
Woodsum, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Katherine C. Ely
                                   --------------------------
                                   Notary Public


                                   My Commission expires:  May 28, 2000



                              Page 28 of 32 Pages
<PAGE>   7
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Thomas S. Roberts
                                   -------------------------
                                   Thomas S. Roberts

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came Thomas S.
Roberts, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   --------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     



                              Page 29 of 32 Pages
<PAGE>   8
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Bruce R. Evans
                                   ------------------------
                                   Bruce R. Evans

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came Bruce R.
Evans, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   --------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     


                              Page 30 of 32 Pages
<PAGE>   9
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Walter G. Kortschak
                                   ------------------------------
                                   Walter G. Kortschak

State of California                         )
                                            ) ss:
County of Santa Clara                       )

         On this 3rd day of February, 1997, before me personally came Walter G.
Kortschak, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/ Katherine C. Ely
                                   -----------------------------
                                   Notary Public


                                   My Commission expires:  May 28, 2000



                              Page 31 of 32 Pages
<PAGE>   10
         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.


                                   /s/  Joseph F. Trustey
                                   --------------------------
                                   Joseph F. Trustey

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 10th day of February, 1997, before me personally came Joseph F.
Trustey, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]
                                   /s/  Cynthia R. Freidman
                                   ----------------------------
                                   Notary Public


                                   My Commission expires:  October 20, 2000     


                              Page 32 of 32 Pages


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission