[Photo Omitted]
       Terry Robinson
      President and CEO

       The Vintage Bank

             Main
      1500 Soscol Avenue
        Napa, CA 94559

           Bel-Aire
     3636 Bel-Aire Plaza
        Napa, CA 94558

          St. Helena
       1065 Main Street
     St. Helena, CA 94558

           Gateway
 1190 Airport Rd. Suite #100
        Napa, CA 94558

         Solano Bank

          Vacaville
       403 Davis Street
     Vacaville, CA 95688

          Fairfield
  1411 Oliver Rd. Suite #100
     Fairfield, CA 94553

           Vallejo
  976 Admiral Calaghan Lane
      Vallejo, CA 94590

           Benicia
    1395 E. Second Street
      Benicia, CA 94510


    For More Information:

      North Bay Bancorp
        P.O. Box 2200
        Napa, CA 94558
    Phone: (707) 252-5026
  Toll Free: (800) 888-4682
     Fax: (707) 252-5027

   www.NorthBayBancorp.com


[LOGO OMITTED]
Nb North Bay                Investor
     BANCORP                  News
                                                               Volume 2, Issue 2
                                                              Third Quarter 2003

                               PRESIDENT'S LETTER

This issue marks the resumption of our quarterly communications to shareholders.
Henceforth,  you will receive these  newsletters  following release of financial
results  for the first,  second  and third  quarters  of each year.  We will not
produce a newsletter  following the fourth quarter as  shareholders will receive
our Annual Report in lieu.

The months since our last  shareholders'  newsletter have been challenging ones.
The first half of the year was notable for some key management  changes followed
by a  significant  reorganization  of the  holding  company  and  resolution  of
litigation with our former host system  provider.  Also during the first half of
2003,  we felt the  negative  financial  effects of  unprecedented  low interest
rates.  As the fed funds rate  approached  zero, a narrowing net interest margin
was  unavoidable.  This  lower  margin  impacted  us at the  same  time  we were
absorbing non-recurring expenses related to the litigation, new regulations, our
internal  reorganization,  opening of our ninth branch office and  relocation of
holding company administrative offices.

As reported  elsewhere in this  newsletter,  we announced record profits for the
third  quarter 2003 and a return to what I described as  "normalized"  earnings.
While the first half of 2003 was impacted by non-recurring  events,  we view the
second half of the year as being more representative of ongoing profitability. I
am bullish on our prospects for year 2004. We have our key positions filled with
outstanding  people,  our Banks have effective sales program to help sustain our
growth,  we will  continue our  tradition of high asset quality and our overhead
performance  will improve  through a combination of growth and improved  expense
management.

I would like to acknowledge  and thank the  management  team that has carried us
through  this  challenging  period  and will  help us  capitalize  on the  great
opportunities ahead. Our two Bank Presidents and Chief Executive Officers,  Glen
Terry (The Vintage Bank) and John Nerland (Solano Bank) have strengthened  their
organizations  in key areas and  instilled a "sales and service" culture  within
their  respective  Banks. Executive Vice President Kathi Metro, who started with
The Vintage Bank in 1985,  now handles  Credit  Administration  from the holding
company; Kathi deserves a great deal of the credit for the Company's exceptional
asset quality.  Senior Vice President & Chief Financial  Officer Lee-Ann Cimino,
another  employee  with us  since  the  early  days  of The  Vintage  Bank,  has
effectively  handled the many challenges  presented by new legislation and audit
standards  required  of public  companies.  Under the  guidance  of Senior  Vice
President  and Human  Resources  Manager  Susan  Fonseca,  we have  upgraded our
recruitment  and hiring  practices  and are  rapidly  improving  our quality and
quantity of employee  training.  Senior Vice  President & Manager of Information
Services  Suzette  Junier  has  effectively   directed  her  department's  daily
activities  while  overseeing  projects  that enhance the quality of  management
information.  Vice President Lynn Tuttle has effectively managed Loan Operations
during  a  year  when  volumes   nearly   doubled,   all  the  while   retaining
responsibility  for  Compliance  and  Internal  Audit.  Jaime  Buffington,  Vice
President  and  Operations  Administrator,  has  implemented  changes  that have
improved  the service  quality and  efficiencies  of our Call  Center,  Merchant
Bankcard and Internet Banking programs.  Recently,  our management team has been
strengthened  with the  addition of Vice  President & Marketing  Manager  Stacey
Heater-Divine  and the return of Stephanie Rode, who is assuming  responsibility
as Vice President for Compliance and Internal Audit.

                                                             Continued on page 6
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North Bay Bancorp Investor News      Page 1                         Vol. 2  No.2



(LOGO Omitted)
North Bay Bancorp
Income Statements
(Unaudited)
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- --------------------------------------------------------------------------------



                                            Three Months Ended        Nine Months Ended
                                              September 30,             September 30,

                                             2003       2002         2003         2002
                                             ----       ----         ----         ----
                                                                 
INTEREST INCOME:
   Loans (including fees)               $4,853,000  $4,290,000  $13,780,000  $12,187,000
   Federal funds sold                       38,000     135,000      157,000      291,000
   Investment securities taxable           482,000     906,000    1,999,000    2,561,000
   Investment securities tax exempt        181,000     164,000      473,000      502,000
                                        ----------  ----------  -----------  -----------
          Total Interest income          5,554,000   5,495,000   16,409,000   15,541,000

INTEREST EXPENSE:
   Deposits                                550,000     859,000    1,907,000    2,511,000
   Short term borrowings                     2,000           0       10,000            0
   Long term borrowings                    129,000     153,000      411,000      192,000
                                        ----------  ----------  -----------  -----------
          Total Interest Expense           681,000   1,012,000    2,328,000    2,703,000

          Net interest income            4,873,000   4,483,000   14,081,000   12,838,000

PROVISION FOR LOAN LOSSES                   45,000     144,000      135,000      432,000

          Net interest income after
             provision for loan losses   4,828,000   4,339,000   13,946,000   12,406,000

NONINTEREST INCOME:                        848,000     731,000    2,285,000    2,009,000

Gains on securities transactions, net      207,000           0      637,000       66,000

NONINTEREST EXPENSE:
   Salaries and employee benefits        2,338,000   1,978,000    6,896,000    5,858,000
   Occupancy                               356,000     228,000      931,000      680,000
   Equipment                               485,000     450,000    1,230,000    1,392,000
   Other                                 1,088,000   1,041,000    3,536,000    2,589,000
                                        ----------  ----------  -----------  -----------
          Total nonInterest expense      4,267,000   3,697,000   12,593,000   10,519,000

          Income before provision for
             income taxes                1,616,000   1,373,000    4,275,000    3,962,000

PROVISION FOR INCOME TAXES                 452,000     446,000    1,204,000    1,380,000

NET INCOME                              $1,164,000  $  927,000  $ 3,071,000  $ 2,582,000
                                        ==========  ==========  ===========  ===========

BASIC EARNINGS PER SHARE:               $     0.51  $     0.42  $      1.36  $      1.18
                                        ==========  ==========  ===========  ===========
DILUTED EARNINGS PER SHARE:             $     0.50  $     0.41  $      1.32  $      1.15
                                        ==========  ==========  ===========  ===========
DIVIDENDS PAID PER SHARE:               $     0.00  $     0.00  $      0.20  $      0.20
                                        ==========  ==========  ===========  ===========


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North Bay Bancorp Investor News           Page 2                   Vol. 2  No. 2



(LOGO Omitted)
North Bay Bancorp
Consolidated Balance Sheets
(Unaudited)
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                                                                              September    September      December
                                                                                  30,          30,           31,
ASSETS                                                                           2003         2002          2002
                                                                                 ----         ----          ----
                                                                                              
CASH AND DUE FROM BANKS                                                    $ 34,777,000  $ 20,091,000  $ 23,785,000
FEDERAL FUNDS SOLD                                                           21,750,000    25,154,000    28,525,000
TIME DEPOSITS WITH OTHER FINANCIAL INSTITUTIONS                                 100,000       100,000       100,000
                                                                           ------------  ------------  ------------
    Total cash and cash equivalents                                          56,627,000    45,345,000    52,410,000

INVESTMENT SECURITIES:
     Held-to-maturity                                                         1,250,000     1,272,000     1,272,000
     Available-for-sale                                                      83,177,000   106,280,000   104,473,000
     Equity securities                                                        1,349,000     1,352,000     1,349,000
                                                                           ------------  ------------  ------------
TOTAL INVESTMENT SECURITIES                                                  85,776,000   108,904,000   107,094,000

LOANS, net of allowance for loan losses of $3,421,000 in September 2003,
    $3,143,000 in September 2002 and $3,290,000 in December 2002            274,491,000   219,245,000   234,337,000
LOANS HELD-FOR-SALE                                                          10,786,000             0             0
BANK PREMISES AND EQUIPMENT, net                                             11,137,000    10,691,000    10,800,000
ACCRUED INTEREST RECEIVABLE AND OTHER ASSETS                                 12,499,000    11,743,000    11,817,000
                                                                           ------------  ------------  ------------

          Total assets                                                     $451,316,000  $395,928,000  $416,458,000
                                                                           ============  ============  ============

LIABILITIES AND SHAREHOLDERS' EQUITY

DEPOSITS:
       Non-interest bearing                                                $104,594,000  $ 94,833,000  $104,142,000
       Interest bearing                                                     294,827,000   253,266,000   263,661,000
                                                                           ------------  ------------  ------------
         Total deposits                                                     399,421,000   348,099,000   367,803,000

Floating rate subordinated
    debenture (trust preferred securities)                                   10,000,000    10,000,000    10,000,000
Accrued interest payable and other liabilities                                3,836,000     3,377,000     3,312,000
                                                                           ------------  ------------  ------------

         Total liabilities                                                  413,257,000   361,476,000   381,115,000

SHAREHOLDERS' EQUITY:
Preferred stock no par value - Authorized, 500,000 shares;
        Issued and outstanding - None
Common  stock  - no  par  value  - Authorized 10,000,000  shares;
        Issued  and outstanding - 2,285,646 shares in September 2003,
        2,123,687 shares in September 2002 and 2,130,288 in December 2002    29,209,000    25,269,000    25,387,000
Retained earnings                                                             8,324,000     7,487,000     8,612,000
Accumulated other comprehensive income                                          526,000     1,696,000     1,344,000
                                                                           ------------  ------------  ------------
       Total shareholders' equity                                            38,059,000    34,452,000    35,343,000

          Total liabilities and shareholders' equity                       $451,316,000  $395,928,000  $416,458,000
                                                                           ============  ============  ============


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North Bay Bancorp Investor News           Page 3                   Vol. 2  No. 2




Third Quarter Earnings (News Release dated October 28, 2003)
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NAPA,  Calif.--(BUSINESS  WIRE)--Oct. 28, 2003--North Bay Bancorp (Nasdaq:NBAN),
holding company for The Vintage Bank and Solano Bank, today announced  financial
results for the three months and nine months ended September 30, 2003.

Net income for the three months ended September 30, 2003 was $1,164,000, or $.50
per share (diluted),  as compared with net income of $927,000, or $.41 per share
(diluted),  for the third  quarter of 2002,  representing  a 26% increase in net
income and a 22% increase in earnings per share.  Net income for the nine months
ended September 30, 2003 was $3,071,000, or $1.32 per share (diluted),  compared
with net income of $2,582,000,  or $1.15 per share (diluted), for the first nine
months of 2002,  representing a 19% increase in net income and a 15% increase in
earnings per share.  Total assets were  $451,316,000  as of September  30, 2003,
equating to growth of 14% over the preceding twelve months. Total assets grew by
approximately $16 million from June 30, 2003.

"We believe the  increased  profits  reported  for the third  quarter  represent
sustainable  returns for North Bay Bancorp.  Earnings for the first half of 2003
were  negatively  impacted by a narrowing of our net interest margin and booking
of certain expenses related to litigation and professional services. Strong loan
growth is  improving  our net  interest  margin and  noninterest  expenses  as a
percentage  of assets  are  declining  significantly,"  stated  Terry  Robinson,
President and CEO.

FINANCIAL HIGHLIGHTS
- --------------------
Earnings
Net  interest  income for the third  quarter of 2003  increased  $390,000  or 9%
compared  with the third  quarter  of 2002.  Year-to-date  net  interest  income
increased  $1,243,000  or 10%.  The net interest  margin has  decreased to 4.94%
during  the first nine  months of 2003 from  5.31% for the year 2002.  The major
factor  contributing to the declining margin was lower yields on investments and
loans; rates paid on deposits did not reflect a corresponding  decline.  The net
interest  margin for the third quarter of 2003 was 4.98%,  slightly  higher than
the year-to-date average, reflecting the impact of an increasing loan-to-deposit
ratio.

Noninterest  income for the third  quarter  of 2003  increased  $117,000  or 16%
compared with the third quarter of 2002.

Year-to-date  noninterest income increased  $276,000,  or 14%, compared with the
first nine months of 2002.  Most  noninterest  income was derived  from  service
charges on deposit accounts. The percentage increase in service charge income in
2003 is  consistent  with the general  increase in numbers of deposit  accounts.
Effective  September 15, 2003,  the  subsidiary  banks  implemented an Overdraft
Privilege  Program that is expected to increase service charge income commencing
with the fourth quarter of 2003.

Gains on securities  transactions were $207,000 during the third quarter of 2003
compared with no securities gains during the third quarter of 2002. Year-to-date
securities gains were $637,000  compared to $66,000 for the first nine months of
2002. The securities gains  recognized thus far in 2003 have resulted  primarily
from  the  sale  of  specific  securities  within  a year  of  their  respective
maturities. Proceeds from the sales have provided funding for loans in process.

Noninterest  expense  for the third  quarter of 2003  increased  $570,000 or 15%
compared with the third quarter of 2002.  Year-to-date  noninterest  expense for
2003  increased  $2,074,000  or 20% compared with the first nine months of 2002.
The  disproportionate  increase  in  expenses  during the first half of 2003 was
primarily  due to legal fees  incurred in connection  with  litigation  with our
former host system provider settled in June 2003 and various  professional fees.
The   year-to-date   increase  was  due  primarily  to  a  combination   of  the
litigation-related legal fees, an 18% increase in salaries and employee benefits
resulting  from  increased  staffing  and a 37%  increase in  occupancy  expense
resulting from the addition of The Vintage Bank's Gateway Office,  relocation of
Solano Bank's Fairfield Office and leasing of new holding company administrative
office space.

                                                             Continued on page 5
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North Bay Bancorp Investor News           Page 4                   Vol. 2  No. 2



Continued from page 4

Balance Sheet
Total assets were $451.3  million as of September  30, 2003, a 14% increase from
September 30, 2002.  Deposits grew $51 million or 15% during the previous twelve
months.  Loans,  net of the allowance  for loan losses,  grew $55 million or 25%
during the twelve  months  ended  September  30,  2003.  The strong  loan growth
resulted primarily from aggressive business development activity.

Liquidity levels significantly exceeded policy requirements throughout the year.
As of September 30, 2003 liquid assets represented 30% of total assets.

Asset quality  remains  excellent.  As of September 30, 2003,  the allowance for
loan  losses  was $3.4  million,  or 1.23% of loans  outstanding.  No loan  loss
provision  was accrued for The Vintage Bank during the first nine months of 2003
based upon our revised loan loss reserve analysis; $135,000 was expensed for the
provision at Solano Bank.  Net  charge-offs  were a nominal $4,000 for the first
nine months of 2003. There were no nonperforming loans as of September 30, 2003.

OUTLOOK
- -------
Regarding the longer-term outlook, Robinson stated, "These third quarter results
bode well for the fourth quarter of 2003 and the year 2004.  While we anticipate
ending 2003 slightly below our ambitious growth and earnings goals for the year,
we  anticipate  2003 will be  recognized  as a year of solid growth and improved
profitability.  More  importantly,  we are  optimistic  regarding our growth and
earnings  prospects  for 2004,  given the age and  position  of our six  offices
opened since July of 2000 and our anticipated  increasing noninterest income and
improved management of noninterest expense."

ABOUT NORTH BAY BANCORP
- -----------------------
North Bay Bancorp is the parent company of two community  banks in the North Bay
Region of  Northern  California  -- The  Vintage  Bank based in Napa  County and
Solano  Bank  based  in  Solano  County.  Both  subsidiaries  are  full  service
commercial  banks  offering a wide  selection  of deposit,  loan and  investment
services  to local  consumers  and  small  business  customers.  Each bank has a
separate board of directors composed of local business and community leaders.

The Vintage  Bank,  which opened for business in 1985,  currently  operates five
banking  offices  in Napa  County,  Northern  California's  number  one  tourist
destination  and the nation's  premier wine  producing  region.  The Bank's main
office and two branch offices are located in the City of Napa.  Vintage also has
a branch in the City of St.  Helena and a branch on Airport Road in the Southern
industrial area of Napa County. Solano Bank, which opened in July 2000, operates
offices in the primary  cities  along the I-80  corridor of Solano  County.  The
Bank's main office is located in  Vacaville,  with branch  offices in Fairfield,
Vallejo and Benicia. This region,  projected to be the fastest growing county in
Northern  California  through  year 2020,  is  attracting  growth with a quality
lifestyle,  affordable housing and  business-friendly  attitudes.  Solano Bank's
Fairfield Office was relocated to an upgraded  location during the third quarter
of 2003 in  accordance  with a  long-standing  plan;  ATM and  night  depository
service were retained at the prior location.

North Bay Bancorp  stock trades on the Nasdaq  National  Market under the symbol
NBAN.

- --------------------------------------------------------------------------------
This news  release  contains  forward-looking  statements  with  respect  to the
financial condition,  results of operation and business of North Bay Bancorp and
its subsidiaries.  These include, but are not limited to, statements that relate
to or are  dependent on estimates or  assumptions  relating to the  prospects of
loan growth,  credit quality and certain operating  efficiencies  resulting from
the  operations  of The  Vintage  Bank and Solano  Bank.  These  forward-looking
statements  involve  certain  risks and  uncertainties.  Factors  that may cause
actual  results  to  differ   materially   from  those   contemplated   by  such
forward-looking  statements include, among others, the following  possibilities:
(1)  competitive   pressure  among  financial   services   companies   increases
significantly;  (2) changes in the interest  rate  environment  reduce  interest
margins; (3) general economic conditions, internationally,  nationally or in the
State of  California  are less  favorable  than  expected;  (4)  legislation  or
regulatory  requirements or changes  adversely  affect the business in which the
combined organization will be engaged; and (5) other risks detailed in the North
Bay Bancorp reports filed with the Securities and Exchange Commission.

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North Bay Bancorp Investor News           Page 5                   Vol. 2  No. 2




Continued from page 1

In summary,  our management  team is competent,  engaged and committed to seeing
North Bay Bancorp realize its vision of growing our Company beyond $1 billion in
total  assets  while  generating  above-peer  financial  returns.  I have  every
confidence we will succeed in tins endeavor.


I would like to thank our  shareholders  for  supporting  all the  proposals  as
recommended by your Board.  Also, I appreciate any feedback our shareholders may
have  regarding  these  investor  newsletters.  Please  feel free to call  (707)
252-5024 or e-mail me  (trobinson@northbaybancorp.com)  with your  questions  or
comments.


Sincerely.

/s/ Terry L. Robinson
- ------------------------------
Terry L. Robinson
President & CEO


                           FORWARD-LOOKING STATEMENTS
                           --------------------------

This letter  contains  forward-looking  statements with respect to the financial
condition,  results of  operation  and  business  of North Bay  Bancorp  and its
subsidiaries.  These include,  but are not limited to, statements that relate to
or are dependent on estimates or  assumptions  relating to the prospects of loan
growth,  credit quality and certain  operating  efficiencies  resulting from the
operations of The Vintage Bank and Solano Bank. These forward-looking statements
involve certain risks and  uncertainties.  Factors that may cause actual results
to differ materially from those contemplated by such forward-looking  statements
include,  among others, the following  possibilities:  (1) competitive  pressure
among financial services companies increases  significantly;  (2) changes in the
interest  rate  environment  reduce  interest  margins;   (3)  general  economic
conditions,  internationally,  nationally or in the State of California are less
favorable than expected;  (4) legislation or regulatory  requirements or changes
adversely  affect  the  business  in which  the  combined  organization  will be
engaged;  and (5) other risks  detailed in the North Bay Bancorp  reports  filed
with the Securities and Exchange Commission.

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North Bay Bancorp Investor News      Page 6                         Vol. 2  No.2