HYBRID NETWORKS INC
SC 13G, 1998-02-17
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                                  SCHEDULE 13G

             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                             (Amendment No. ______)*

                              HYBRID NETWORKS, INC.
                                (Name of Issuer)
                                     COMMON
                         (Title of Class of Securities)

                                    44860K102
                                 (CUSIP Number)


THIS PAPER  DOCUMENT IS BEING  SUBMITTED  PURSUANT TO RULE 902(g) OF  REGULATION
S-T.

*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 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No.  44860K102                                                 13G                                Page 2 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA CAPITAL VI        94-3166265
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              California
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     541,621
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     541,621
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              541,621
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              5.4%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 2 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 3 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA PARTNERS (0)
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              California
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     541,621
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     541,621
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              541,621
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              5.4%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 3 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 4 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA TECHNOLOGY PARTNERS VI       94-3166266
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              California
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             NONE
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     29,761
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     29,761
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              29,761
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              LESS THAN 1%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 4 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 5 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA XXIV    95-4465970
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              California
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             NONE
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     16,932
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     16,932
- ------------- ----------------------------------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              16,932
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              LESS THAN 1%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 5 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 6 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA 1995
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              California
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     6,877
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     6,877
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              6,877
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              LESS THAN 1%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 6 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 7 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

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

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

              UK
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 7 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 8 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              THOMAS F. STEPHENSON
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              LESS THAN 1%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>



<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                 Page 9 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

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

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                         Page 9 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 10 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

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

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                        Page 10 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 11 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              J. THOMAS MCMURRAY
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                        Page 11 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 12 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              DONALD T. VALENTINE
- ------------- ----------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)  [ ]
              N/A                                                                             (b)  [ ]
- ------------- ----------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                        Page 12 of 17 Pages

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     ------------------------------------------
CUSIP No. 44860K102                                                  13G                                Page 13 of 17 Pages
- -----------------------------------------------------                                     ------------------------------------------

- ------------- ----------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

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

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

              US
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH
   REPORTING PERSON WITH             none
                             ------- -----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER

                                     695,191
                             ------- -----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER

                                     NONE
                             ------- -----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER

                                     695,191
- ---------------------------- ------- -----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              695,191
- ------------- ----------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


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

              7%
- ------------- ----------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                        Page 13 of 17 Pages

<PAGE>


Item 1.

       (a)        Name of Issuer:           HYBRID NETWORKS, INC.              

       (b)        Address of Issuer's Principal Executive Offices:
                                            10201 BUBB ROAD
                                            CUPERTINO, CALIFORNIA 95014
Item 2.

       (a)        Name of Persons Filing:   Sequoia Capital VI ("SC VI")
                                            Sequoia Partners (O) ("SP(O)")
                                            Sequoia Technology Partners VI
                                            Sequoia XXIV
                                            Sequoia 1995
                                            Pierre Lamond ("PL")
                                            Donald T. Valentine ("DTV")
                                            Thomas F. Stephenson ("TFS")
                                            Michael Moritz ("MM")
                                            Douglas Leone (DL)
                                            Mark Stevens (MS)
                                            J. Thomas McMurray (JTM)

       SP(O) is the General  Partner of SC VI. PL, DTV,  TFS, MM, DL, MS and JTM
are General Partners of SP(O) and STP VI.

       (b)        Address of Principal Business Office or, if None, Residence:
                                            3000 Sand Hill Road
                                            Building 4, Suite 280
                                            Menlo Park, CA  94025

       (c)        Citizenship:
                                            SC VI, SP(O), STP VI:  California
                                            PL,  DTV, TFS,  DL, MS, JTM:  United
                                            States; MM: UK

       (d)        Title of Class of Securities:
                                            Common Stock

       (e)        CUSIP Number:             44860K102


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.  Ownership

See Rows 5 through 11 of cover pages

Item 5.  Ownership of Five Percent or Less of a Class

       If this  statement  is being filed to report the fact that as of the date
hereof the reporting  person has ceased to be the beneficial  owner of more than
five percent of the class of securities, check the following x.

      Instruction. Dissolution of a group requires a response to this item.

                              Page 14 of 17 Pages

<PAGE>

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

Item 9.  Notice of Dissolution of Group

Not applicable

Item 10. Certification

     [The  following  certification  shall be included if the statement is filed
pursuant to Rule 13d-1(b):

     By signing  below I certify  that,  to the best of my knowledge and belief,
the  securities  referred  to above  were  acquired  in the  ordinary  course of
business  and were not acquired for the purpose of and do not have the effect of
changing or  influencing  the control of the issuer of such  securities and were
not acquired in connection  with or as a participant in any  transaction  having
such purpose or effect.]


[EXHIBITS]

[A:    Joint Filing Statement]

                              Page 15 of 17 Pages

<PAGE>


                                    SIGNATURE

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

Date:             , 1998

SEQUOIA CAPITAL VI
By its General Partner,
Sequoia Partners (O)

- --------------------------------
Douglas Leone, General Partner



- --------------------------------                --------------------------------
Pierre Lamond                                   J. Thomas McMurray


- --------------------------------                --------------------------------
Donald T. Valentine                             Douglas Leone


- --------------------------------
Thomas F. Stephenson


- --------------------------------
Mark Stevens


- --------------------------------
Michael Moritz

                              Page 16 of 17 Pages

<PAGE>


                                    EXHIBIT A

                             JOINT FILING STATEMENT

       Pursuant to Rule  13d-1(f)(1),  we, the  undersigned,  hereby express our
agreement that the attached Schedule 13G is filed on behalf of each of us.

Date:             , 1998

SEQUOIA CAPITAL VI                              SEQUOIA TECHNOLOGY PARTNERS VI
By its General Partner,
Sequoia Partners (O)

- --------------------------------                --------------------------------
Douglas Leone, General Partner                  Douglas Leone, General Partner


- --------------------------------
Pierre Lamond


- --------------------------------
Donald T. Valentine


- --------------------------------
Thomas F. Stephenson


- --------------------------------
Michael Moritz


- --------------------------------
Mark Stevens


- --------------------------------
J. Thomas McMurray


- --------------------------------
Douglas Leone

                              Page 17 of 17 Pages



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