EXHIBIT 4.3

                                                                       Exhibit B

                            Form of Right Certificate

Certificate No.  R-                                                    ___Rights

                NOT EXERCISABLE AFTER October 28, 2012 OR EARLIER
                  IF REDEMPTION OCCURS. THE RIGHTS ARE SUBJECT
                 TO REDEMPTION AT $0.001 PER RIGHT ON THE TERMS
                       SET FORTH IN THE RIGHTS AGREEMENT.

                                Right Certificate

                                NORTH BAY BANCORP

            This certifies that  ___________________,  or registered assigns, is
the  registered  owner of the  number of Rights set forth  above,  each of which
entitles the owner thereof,  subject to the terms,  provisions and conditions of
the Rights  Agreement,  dated as of October 28, 2002 (the  "Rights  Agreement"),
between  NORTH BAY  BANCORP,  a  California  corporation  (the  "Company"),  and
REGISTRAR  AND  TRANSFER  COMPANY  (the "Rights  Agent"),  to purchase  from the
Company at any time after the Distribution  Date (as such term is defined in the
Rights Agreement) and prior to 5:00 p.m.,  California time, on October 28, 2002,
at the office of the Rights  Agent,  or at the office of its successor as Rights
Agent,  one  one-hundredth  of a fully paid  non-assessable  share of  Preferred
Stock,  no par value (the  "Preferred  Shares"),  of the Company,  at a purchase
price of $_____ per Preferred Share (the "Purchase  Price"),  upon  presentation
and  surrender of this Right  Certificate  with the Form of Election to Purchase
duly  executed,  along  with the full  Purchase  Price.  The  number  of  Rights
evidenced by this Right  Certificate  (and the number of Preferred  Shares which
may be purchased upon exercise  hereof) set forth above,  and the Purchase Price
set forth  above,  are the number and Purchase  Price as of September  __, 2001,
based on the Preferred  Shares as  constituted  at such date. As provided in the
Rights  Agreement,  the Purchase Price and the number of Preferred  Shares which
may be  purchased  upon the  exercise  of the  Rights  evidenced  by this  Right
Certificate  are subject to  modification  and adjustment  upon the happening of
certain events.

            This Right  Certificate  is subject to all of the terms,  provisions
and conditions of the Rights  Agreement,  which terms  provisions and conditions
are hereby  incorporated herein by reference and made a part hereof and to which
Rights Agreement  reference is hereby made for a full description of the rights,
limitations of rights, obligations duties and immunities hereunder of the Rights
Agent,  the  Company and the  holders of the Right  Certificates.  Copies of the
Rights Agreement are on file at the principal  executive  offices of the Company
and the below-mentioned offices of the Rights Agent.


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            This Right  Certificate,  with or without other Right  Certificates,
upon surrender at the principal offices of the Rights Agent may be exchanged for
another  Right  Certificate  or  Right  Certificates  of  like  tenor  and  date
evidencing  Rights  entitling the holder to purchase a like aggregate  number of
Preferred  Shares as the  Rights  evidenced  by the Right  Certificate  or Right
Certificates  surrendered  shall have entitled such holder to purchase.  If this
Right  Certificate  shall be exercised in part,  the holder shall be entitled to
receive upon surrender hereof another Right or Right Certificates for the number
of whole Rights not exercised.

            Subject  to the  provisions  of the  Rights  Agreement,  the  Rights
evidenced  by this  Certificate  may be redeemed by the Company at a  redemption
price of $.001 per Right.

            No  fractional  Preferred  Shares  (other than  fractions  which are
integral multiples of one one-hundredth) will be issued upon the exercise of any
Right or Rights  evidenced  hereby,  but in lieu  thereof a cash payment will be
made, as provided in the Right Agreement.

            No holder of this Right  Certificate  shall be  entitled  to vote or
receive  dividends  or be deemed for any  purpose  the  holder of the  Preferred
Shares  or of any  other  securities  of the  Company  which  may at any time be
issuable on the  exercise  hereof,  nor shall  anything  contained in the Rights
Agreement or herein be construed to confer upon the holder hereof,  as such, any
of the  rights  of a  shareholder  of the  Company  or any right to vote for the
election  of  directors  or upon any matter  submitted  to  shareholders  at any
meeting thereof,  or to give or withhold consent to any corporate  action, or to
receive notice of meetings or other actions  affecting  shareholders  (except as
provided  in the Rights  Agreement),  or to receive  dividends  or  subscription
rights,  or  otherwise,  until  the  Right or  Rights  evidenced  by this  Right
Certificate shall have been exercised as provided in the Rights Agreement.

            This  Right  Certificate  shall not be valid or  obligatory  for any
purpose until it shall have been countersigned by the Rights Agent.

            WITNESS  the  facsimile  signature  of the  proper  officers  of the
Company and its corporate seal. Dated as of ______________, ____.

ATTEST:                                      NORTH BAY BANCORP

By:                                          By:
    ------------------------------               -------------------------------

Countersigned:

- ---------------------------------.

By:
   -------------------------------
   Authorized Signature


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                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
               holder desires to transfer the Right Certificate.)

                  FOR VALUE RECEIVED
________________________________________________________________________________
hereby sells, assigns and transfers unto _______________________________________

                  (Please print name and address of transferee)

________________________________________________________________________________
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint  ___________________Attorney,  to
transfer the within Right Certificate on the books of the within-named  Company,
with full power of substitution.

Dated: ____________, 20__

                                            ------------------------------------
                                            Signature

Signature Guaranteed:

            Signatures must be guaranteed by a commercial bank or trust company,
broker,  dealer or other eligible institution which is a member in good standing
of a medallion guaranty program approved by the Securities Transfer Association,
Inc.


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             Form of Reverse Side of Right Certificate -- continued

                          FORM OF ELECTION TO PURCHASE
                      (To be executed if holder desires to
                        exercise the Right Certificate.)

To:  NORTH BAY BANCORP

            The undersigned hereby irrevocably elects to exercise  _______Rights
represented by this Right  Certificate to purchase the Preferred Shares issuable
upon the  exercise  of such  Rights  and  requests  that  certificates  for such
Preferred Shares be issued in the name of:

Please insert social security
or other identifying number

- --------------------------------------------------------------------------------
                         (Please print name and address)

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

If such  number of Rights  shall not be all the Rights  evidenced  by this Right
Certificate,  a new Right  Certificate for the balance  remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security
or other identifying number

- --------------------------------------------------------------------------------
                         (Please print name and address)

Dated:  __________, 20__
                                                  ------------------------------
                                                  Signature

Signature Guaranteed:

            Signature  must be  guaranteed  by a  member  firm  of a  registered
national securities exchange, a member of the National Association of Securities
Dealers,  Inc.,  or a  commercial  bank or trust  company  having  an  office or
correspondent in the United States.

                                     NOTICE

            The signature in the foregoing forms of assignment and election must
conform to the name as written upon the face of this Right  Certificate in every
particular, without alteration or enlargement or any change whatsoever.


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