Exhibit 99.1
- ------------

April 24, 2003

FOR IMMEDIATE RELEASE
- ---------------------

                      MONTEREY BAY BANCORP, INC. ANNOUNCES:

                           FIRST QUARTER 2003 RESULTS;
              RECORD LEVELS OF LOANS, ASSETS, DEPOSITS, AND INCOME


                                                       Common Stock Symbol: MBBC
                                                          NASDAQ National Market


         Watsonville,   CA.   April  24,  2003.   Monterey  Bay  Bancorp,   Inc.
("Company"),  the holding company for Monterey Bay Bank ("Bank"), today reported
net income of $1.84 million, equivalent to $0.52 diluted earnings per share, for
the quarter ended March 31, 2003,  compared to net income of $1.21  million,  or
$0.35 diluted earnings per share, for the same period in 2002. Net income during
the quarter  ended  December 31, 2002 (the  immediately  preceding  quarter) was
$1.62 million,  equivalent to $0.46 diluted earnings per share. The earnings for
the first  quarter  of 2003 were the  highest of any  quarter  in the  Company's
history.

         As  announced  on April 8, 2003,  the Company has executed a definitive
agreement  and plan of merger  with Union  Bank of  California  and  UnionBanCal
Corporation,  the  holding  company for Union Bank of  California,  to merge the
Company into Union Bank of California  subject to the terms of the agreement and
following the receipt of regulatory  approvals  and an  affirmative  vote by the
Company's stockholders.

         The  Company  will hold its  previously  announced  annual  meeting  of
stockholders  on Thursday,  May 22, 2003 at 9:00 AM Pacific Time in Watsonville.
Proxy  statements for this annual meeting were  distributed on April 11, 2003 to
stockholders  as of March 26, 2003,  the Record Date for the annual  meeting.  A
separate  special  meeting  of  stockholders  will be  called  later in 2003 for
stockholders to vote on the proposed merger.

         First  quarter  results  were  favorably   impacted  by  the  continued
implementation  of the  Company's  strategic  plan to transform  the Bank into a
community  commercial  bank  with a focus on  relationship  banking  and  strong
commitment to community involvement. First quarter results were also affected by
several non-recurring items:

o    a $114 thousand gain on sale of the Company's one foreclosed  property held
     at December 31, 2002

o    a total of $192 thousand in one-time personnel expenses associated with the
     adoption of certain non-qualified benefits during the first quarter of 2003
     and a special  bonus,  approved  by the Board of  Directors,  issued to the
     Chief Executive Officer

         In addition,  first  quarter 2003  results were  favorably  impacted by
record mortgage  banking income and by the first full quarter of income from the
Company's recent investment in bank owned life insurance.





Monterey Bay Bancorp, Inc.                                                Page 2
Press Release
April 24, 2003


         Return on average  total assets  (annualized)  ("ROA")  increased  from
0.90% for the first quarter of 2002 to 1.20% for the first quarter of 2003.  ROA
was 1.11% for the fourth quarter of 2002. Return on average stockholders' equity
(annualized) ("ROE") improved from 9.37% for the first quarter of 2002 to 12.73%
for the first quarter of 2003. ROE was 11.64% for the fourth quarter of 2002. At
March 31, 2003, the Company had record levels of loans,  assets,  deposits,  and
stockholders'  equity.  Tangible book value per share  increased  from $16.00 at
December 31, 2002 to $16.64 at March 31, 2003.

         During  the  first   quarter  of  2003,   the  Company   continued  the
implementation  of its strategic plan of transforming  the Bank into a community
focused  commercial bank serving the financial  needs of individuals,  families,
local  organizations,  and  businesses.  Key  accomplishments  during  the first
quarter included:

o    growth in net loans held for investment

o    significant  progress in shifting the  composition  of the loan and deposit
     portfolios

o    continued improvement in the Company's efficiency ratio

o    maintenance of strong credit quality

         Net  interest  income  increased  from $5.4  million  during  the first
quarter of 2002 to $6.2 million during the first quarter of 2003.  This increase
resulted  from both  expanded  spreads  and growth in the  average  balances  of
interest  earning assets and  liabilities.  The Company's  ratio of net interest
income to average  total assets was 4.02% for the first quarter of 2003, up from
3.98% for the same period in 2002. The Company's net interest  margin  increased
more significantly,  rising from 4.19% during the first quarter of 2002 to 4.27%
during the first quarter of 2003. The Company's purchase of $9.0 million in bank
owned life insurance during the fourth quarter of 2002 moderated the improvement
in the ratio of net interest  income to average total assets.  The increased net
interest income during the first quarter of 2003 in part stemmed from the Bank's
continued  implementation  of its strategic  plan,  which  incorporates a higher
ratio of loans to total  assets,  a  smaller  percentage  of total  loans  being
comprised of residential  mortgages,  and  transaction  accounts  constituting a
greater portion of total deposits.

         The Company  recorded a $325 thousand  provision for loan losses during
both the  first  quarter  of 2003 and  2002.  The  Company's  ratio of loan loss
reserves to total loans was 1.54% at both March 31, 2003 and  December 31, 2002,
and was  1.46% at March  31,  2002.  Factors  contributing  to the  level of the
Company's provision for loan losses during the first quarter of 2003 included:

o    the  continued  shift in the  Company's  loan mix  away  from its  historic
     concentration in residential mortgages

o    a $58  thousand  increase in the  specific  reserve for a loan secured by a
     hotel / resort within the Company's  primary  market area, as  subsequently
     discussed

o    $51 thousand in net charge-offs during the first quarter of 2003





Monterey Bay Bancorp, Inc.                                                Page 3
Press Release
April 24, 2003


         Non-performing  loans  increased from $2.6 million at December 31, 2002
to $2.9  million  at March  31,  2003 due to the  Company's  restructuring  $342
thousand in loans to a commercial  banking customer.  This customer,  located in
the Company's primary market area, recently made significant capital investments
to support the long term  growth of the  business,  and in so doing  experienced
reduced  liquidity.  In conjunction with the  restructure,  the Company obtained
additional real estate collateral.

         Non-accrual loans were $2.6 million at both March 31, 2003 and December
31, 2002. Non-accrual loans at March 31, 2003 included a $2.3 million commercial
real estate mortgage.  This credit is a participation loan where the Bank is not
the lead financial institution.  The loan is secured by a first deed of trust on
a hotel / resort located within the Company's primary market area and by a first
deed of trust on a  residential  lot located in  California.  The  borrowers are
directly  personally  indebted.  The hotel / resort has experienced limited cash
flow,  and has been  adversely  impacted  by the  decline in tourism  and travel
during the past two years.

         At March 31,  2003,  the Company  maintained a $520  thousand  specific
reserve  for  this  hotel / resort  loan,  based  upon  estimated  net  proceeds
following  foreclosure  and sale.  This  specific  reserve  increased  from $462
thousand at  December  31,  2002 due to the  borrower's  failure to pay all real
estate  taxes when due.  Although  the loan was current in its payments at March
31, 2003, the Company  continues to maintain the loan on non-accrual  status due
to concern about the future net cash flow of the hotel / resort, particularly in
light of the status of the economy,  the tourism  industry,  and the outlook for
business travel activity. These factors also create particular volatility in the
market value of the hotel / resort.

         Non-accrual loans at March 31, 2003 also included:

o    a residential mortgage with a principal balance of $199 thousand

o    a $129 thousand loan secured by a first deed of trust on residential land

         The $199 thousand  residential  mortgage  fully  reinstated  during the
first quarter of 2003,  but was  maintained on  non-accrual  status at March 31,
2003 because of prior  chronic  delinquency.  The $129  thousand loan secured by
residential land was paid off in full early in the second quarter of 2003.

         At December 31, 2002,  the Company had one  foreclosed  property with a
book value of $846 thousand.  This property was a custom single family home that
was sold during the first  quarter of 2003,  with the  Company  realizing a $114
thousand gain on sale. The Company owned no real estate acquired via foreclosure
at March 31, 2003.

         Non-interest  income totaled $835 thousand  during the first quarter of
2003, comparing favorably to $512 thousand for the same period in 2002.





Monterey Bay Bancorp, Inc.                                                Page 4
Press Release
April 24, 2003


         Customer  service charge income increased from $351 thousand during the
first quarter of 2002 to $394 thousand  during the same period in 2003. The rise
primarily  resulted from increased  charges on deposit accounts and higher debit
card income. The Company has conducted an ongoing debit card education and sales
campaign in recent  quarters to foster  increased  customer  utilization of this
convenient and flexible service.

         Gains on the sale of loans were $123 thousand  during the first quarter
of 2003, up from $27 thousand during the first quarter of 2002. Mortgage banking
income  during the first quarter of 2003  benefited  from the  historically  low
interest  rate  environment  and a high  general  level  of  mortgage  refinance
activity. Beginning in 2003, the Company commenced offering a greater variety of
residential  mortgages under an expanded  relationship  with a secondary  market
conduit. This expansion was pursued in light of the Company's desire to continue
reducing  the  percentage  of total  loans  held  for  investment  comprised  of
residential  mortgages  while  at the  same  time  continuing  to meet  the home
financing  needs of its local  communities.  The Company  anticipates  continued
favorable results from its mortgage banking operations during the second quarter
of 2003 based upon its pipeline at March 31, 2003 and the continued availability
of fifteen and thirty year fixed rate residential loans at rates below 6.00%.

         Income  from bank owned life  insurance  was $113  thousand  during the
first quarter of 2003, following the Bank's initial investment in December 2002.

         Commissions from the sale of non-FDIC insured investment  products were
$28 thousand during the first quarter of 2003, down from $41 thousand during the
first quarter of 2002. The capital markets  environment,  particularly  the weak
equity markets,  and the Company's  continuing vacancies for licensed investment
sales representatives constrained this source of income.

         Loan  servicing  income  totaled $12  thousand  during the three months
ended March 31, 2003, down from $14 thousand during the same period in 2002. The
Company  continues  to sell  the vast  majority  of its long  term,  fixed  rate
residential  loan production into the secondary  market on a servicing  released
basis,  and purchases more interest rate sensitive loans as part of its interest
rate risk management  program.  As a result, the portfolio of loans serviced for
others  continues  to decline as loans pay off. At March 31,  2003,  the Company
serviced $31.4 million in various types of loans for other investors,  down from
$35.3  million at December  31, 2002 and $37.3  million at March 31,  2002.  The
Company  maintained loan servicing assets of $31 thousand at March 31, 2003, and
is thus limited in its exposure of loan servicing income to the accelerated loan
prepayment speeds now occurring as a result of the low interest rate environment
and high volume of residential mortgage refinance activity.

         Gain on sale of mortgage backed  securities  declined from $43 thousand
during the first  quarter  of 2002 to $1  thousand  during the first  quarter of
2003.  The  Company  sold one $494  thousand  par  value  Agency  collateralized
mortgage  obligation  ("CMO") during the first quarter of 2003,  compared to one
$2.7 million par value private  label CMO during the first quarter of 2002.  The
sale in first quarter of 2003 was associated  with the Bank's  management of its
collateral for certain deposits, while the sale in the first quarter of 2002 was
in  conjunction  with the  Company's  interest  rate  risk  management  program.
Although the market value of many of the Company's  mortgage  backed  securities
exceeded  historic  carrying cost during the first quarter of 2003,  the Company
retained the securities as a means of generating net interest income.





Monterey Bay Bancorp, Inc.                                                Page 5
Press Release
April 24, 2003


         Non-interest  expense  rose from $3.5  million in the first  quarter of
2002 to $3.6  million in the first  quarter of 2003  primarily  due to increased
compensation  and employee  benefit costs.  Compensation  and employee  benefits
costs were higher due to:

o    one-time  costs  totaling  $152  thousand  associated  with the adoption of
     certain  non-qualified  benefits  for the Chief  Executive  Officer and the
     Chief Financial Officer

o    recurring   costs  of  $30   thousand   associated   with  the  accrual  of
     non-qualified  retirement benefits obligations that were created during the
     first quarter of 2003

o    higher  costs  for the  Bank's  Employee  Stock  Ownership  Plan due to the
     greater average market price of the Company's common stock

o    greater base salary costs  associated  with staff  additions and changes in
     support of the  Company's  strategic  plan,  particularly  in the Company's
     income property lending and retail banking functions

o    increased expenses for worker's compensation insurance,  which is a general
     problem faced by businesses in the State of California

         Deposit insurance premiums decreased from $51 thousand during the first
quarter of 2002 to $19  thousand  during the same  period in 2003,  despite  the
expansion in the  Company's  deposit  portfolio.  The decline  resulted  from an
adjustment in the Company's insurance premium rate effective July 1, 2002.

         Advertising  and promotion  costs totaled $37 thousand during the first
quarter of 2003,  down from $81  thousand  during  the same  period in the prior
year. Advertising expenses during the first quarter of 2003 were concentrated in
print advertising for consumer deposits. Advertising expenses were higher in the
first  quarter of 2002 in  conjunction  with a radio  campaign that focused upon
communicating the Bank's expanded product line.

         Other  non-interest  expense  decreased  from $412 thousand  during the
first  quarter of 2002 to $333 thousand  during the first quarter of 2003.  Over
the past year,  the  Company  has  implemented  a number of expense  control and
efficiency  initiatives  that moderated  various  operating  costs. In addition,
costs were lower in the first  quarter of 2003 than during the first  quarter of
2002 for consulting, recruiting, and temporary labor expenses.

         In  conjunction  with  the  Company's  strategic  plan,  the  Company's
employees and Directors  enhanced the Bank's visibility during the first quarter
of 2003 by their extensive  participation  in a significant  number of community
events  and  organizations.  As just one  example,  the  Company  fielded  seven
four-person  teams to raise  money for a  community  organization  committed  to
helping  disadvantaged  children in Santa Cruz County.  In the second quarter of
2003, the Company plans to  extensively  participate in the Human Race Walkathon
in both Santa Cruz and Monterey Counties, raising funds for local charities.

         The Company's  effective book tax rate during the first quarter of 2003
was  40.0%,  compared  to 41.8%  during  the same  period  the prior  year.  The
Company's  effective  book tax rate is expected to be  moderated  in 2003 by the
dividends  earned on bank owned life insurance.  These dividends are not subject
to normal Federal and State income tax.





Monterey Bay Bancorp, Inc.                                                Page 6
Press Release
April 24, 2003


         The Company's  efficiency  ratio  improved from 59.13% during the first
quarter of 2002 to 51.67% during the first quarter of 2003.  The  improvement in
this ratio  primarily  stemmed from the  expansion in the Company's net interest
margin,  efficiency  improvements  implemented,  and by the historically  strong
level of non-interest income generated during the first quarter of 2003.

         Total assets  increased  from $609.7  million at December 31, 2002 to a
record $625.8 million at March 31, 2003.

         Cash and cash equivalents  decreased from $11.4 million at December 31,
2002 to $9.8  million at March 31,  2003 due to the use of cash  equivalents  to
fund expansions in the security and loan portfolios.

         Investment and mortgage backed securities  increased from $44.5 million
at December 31, 2002 to $47.3 million at March 31, 2003.  The Company  purchased
Agency issued, AAA rated CMO's and balloon mortgage backed securities during the
first  quarter  of 2003 to serve as  collateral  for  certain  deposits,  invest
available  liquidity,   and  more  effectively  utilize  the  Company's  capital
position. The Company owned two corporate bonds at March 31, 2003, both of which
were  variable  rate,  trust  preferred  securities  issued  by large  financial
institutions.  These bonds reprice quarterly based upon LIBOR and were rated "A"
and "A-" by Standard & Poors at March 31, 2003.

         Loans  held for  investment,  net,  increased  from  $521.9  million at
December 31, 2002 to a record  $538.7  million at March 31,  2003.  The increase
resulted from a combination of internal loan  originations,  including  activity
from the Los Angeles loan  production  office,  and from purchases of individual
income property loans from  correspondent  banks. In addition,  during the first
quarter of 2003,  the  Company  purchased  a $15.5  million  pool of high credit
quality,  seasoned hybrid residential  mortgages secured by first deeds of trust
on California  homes in order to better utilize the Company's  capital,  support
the Bank's Qualified Thrift Lender ("QTL") ratio, and offset  historically  high
loan payoff volumes stemming from the low interest rate environment. These loans
were  also  purchased  in  conjunction  with the  Company's  interest  rate risk
management  program,  as the  Company  sought  to  slightly  increase  its asset
duration during a period of historically high prepayment speeds.

         Total net loans as a  percentage  of total  assets  were 86.2% at March
31,2003,  up slightly from 85.9% at December 31, 2002.  The Company has targeted
increasing  this  ratio to  90.0%  as part of its  strategy  of  supporting  its
interest  margin,  fostering  economic  activity in its local  communities,  and
effectively utilizing the Bank's capital.

         The loan portfolio product mix shifted during the first quarter of 2003
in conformity with the Company's  strategic  plan.  Residential one to four unit
loans  declined  from 33.1% of gross loans held for  investment  at December 31,
2002 to 30.3% at March 31, 2003. In contrast,  multifamily loans rose from 20.8%
to 23.9% and  construction  loans increased from 12.3% to 14.1%.  This change in
loan mix was facilitated by the business relationship officers the Company hired
over the past  eighteen  months and by the Los Angeles loan  production  office,
which concentrates on income property and construction lending.





Monterey Bay Bancorp, Inc.                                                Page 7
Press Release
April 24, 2003


         The cash  surrender  value of the Bank's  investment in bank owned life
insurance  increased  by  $113  thousand  during  the  first  quarter  of  2003,
representing  a 5.0%  annualized  rate of return  which is not subject to normal
Federal and State income taxes. The insurance was purchased to fund:

o    non-qualified  supplemental  executive  retirement  benefits  for the Chief
     Executive  Officer and Chief Financial Officer that were implemented by the
     Company in early 2003

o    the increasing  expense of the tax qualified Employee Stock Ownership Plan,
     with  associated  costs  rising  due  to the  higher  market  price  of the
     Company's common stock

In addition,  the Bank owned life insurance policies provide significant key man
insurance to the Company.

         Deposits increased from $458.3 million at December 31, 2002 to a record
$477.7 million at March 31, 2003. This increase was primarily due to:

o    the Bank's issuance of $10.8 million in brokered certificates of deposit to
     assist in funding expansion in the security and loan portfolios

o    a $17.2  million rise in money  market  account  balances  during the first
     quarter of 2003

         The rise in money market deposit balances resulted from a focused sales
calling  program that included  active  participation  by the Bank's  management
team,  certain customers  preferring to avoid committing to term certificates of
deposit in the current historically low interest rate environment, and customers
building  liquid  balances  in  preparation  for the  payment of real estate and
income taxes in April.

         The  Company  continues  to pursue  increases  in  transaction  account
balances as a fundamental component of its strategic plan.  Transaction accounts
increased  from 46.2% of total  deposits at December  31, 2002 to 48.2% of total
deposits at March 31, 2003 despite the issuance of the $10.8 million in brokered
certificates of deposit. This shift in mix contributed to the Company's reducing
its weighted  average cost of deposits  from 2.05% during the fourth  quarter of
2002 to 1.82% during the first quarter of 2003. This 23 basis point reduction in
deposit cost was attained  despite the  historically low level of interest rates
and therefore the Company's  limited ability to decrease  interest rates on many
deposit products that are currently priced between zero and one percent.

         During 2003,  the Company  hired a new  Director of Retail  Banking and
several new branch  managers with  significant  commercial  banking  experience.
These new employees were  recruited to increase the pace of deposit  generation,
facilitate the change in mix of the deposit portfolio, and more effectively sell
and service a broader product line, including an expanded roster of products for
local businesses.

         The  Company's  ratio of net loans to deposits was 112.86% at March 31,
2003,  declining  from  114.21% at December  31,  2003.  The Company  intends to
continue actively managing this ratio by:

o    pursuing the opening of a de novo branch in Pacific Grove, in the Company's
     primary market area

o    directing a significant  percentage of the advertising and promotion budget
     to deposit generation

o    selling a greater  percentage of total residential loan production into the
     secondary market





Monterey Bay Bancorp, Inc.                                                Page 8
Press Release
April 24, 2003


         Early in the  second  quarter  of 2003,  the Bank  received  regulatory
approval from the Office of Thrift  Supervision,  its primary federal regulator,
to open the planned branch in Pacific  Grove,  and was nearing the completion of
lease negotiations for the site.

         Borrowings  decreased  from $93.8 million at December 31, 2002 to $88.4
million  at  March  31,  2003.  The  increase  in  deposits  and the sale of the
foreclosed property provided funding to repay certain short term borrowings. All
of the Company's FHLB advances at March 31, 2003 were fixed rate,  fixed term or
overnight borrowings without call or put option features.

         Monterey  Bay Bank  continues to be in the highest  regulatory  capital
classification  of "Well  Capitalized",  with capital  levels  significantly  in
excess of regulatory  requirements.  All of the Bank's regulatory capital ratios
increased from December 31, 2002 to March 31, 2003.

         Consolidated  stockholders'  equity  increased  from  $56.1  million at
December  31,  2002 to a  record  $58.2  million  at  March  31,  2003  due to a
combination   of  net  income,   continued   amortization   of  deferred   stock
compensation,  additional  paid-in  capital  generated  from the Employee  Stock
Ownership Plan and the Performance Equity Plan, and the exercise of 6,659 vested
stock options.  These factors more than offset the impact of the depreciation in
the  aggregate  fair value of securities  classified as available for sale.  The
Company did not  repurchase  any of its common stock during the first quarter of
2003, and will not  repurchase any of its common stock prior to the  stockholder
vote on the proposed merger.

         In reviewing the most recent quarter,  C. Edward Holden,  the Company's
Chief Executive Officer and President,  commented: "We are pleased to report the
eighth consecutive  quarter of increased earnings per share, and the achievement
of record levels of loans, assets,  deposits, and tangible book value per share.
We intend to enter into the proposed merger with a strong  positive  momentum by
maintaining  our  focus  on  building  relationships,   assisting  customers  in
attaining their financial objectives, and providing responsive customer service.
We look  forward  to having  access to the  product  line and  expanded  service
delivery options that will become available following the merger with Union Bank
of California,  including a vastly increased ATM network and enhanced electronic
banking functionality."

         The  Company's  common  stock is listed on the NASDAQ  National  Market
under  the  symbol  "MBBC".  The  Company  and the  Bank  are  headquartered  in
Watsonville,  California. The Bank operates through its headquarters building in
Watsonville  that  also  functions  as a  limited  service  branch  office,  one
stand-alone  loan  production  office in Los  Angeles,  and eight  full  service
branches  located in the Greater  Monterey Bay Area of Central  California.  The
Bank operates 11 ATM's including two at remote (non-branch) sites. The Bank also
offers customer access via bilingual telephone banking, Internet banking, remote
deposit services, and worldwide ATM networks. The Bank's deposits are insured by
the Federal Deposit Insurance Corporation ("FDIC") to the maximum extent allowed
by law.





Monterey Bay Bancorp, Inc.                                                Page 9
Press Release
April 24, 2003


         Certain of the  statements  contained  herein  that are not  historical
facts  are  forward-looking   statements  within  the  meaning  of  the  Private
Securities  Litigation  Reform Act.  Forward-looking  statements  are  typically
identified  by words  or  phrases  such as  "believe",  "expect",  "anticipate",
"intend",  "estimate",  "target", "plans", "may increase", "may fluctuate", "may
result in", "are  projected",  and similar  expressions.  The  Company's  actual
results  may  differ  materially  from  those  included  in the  forward-looking
statements.  These  forward-looking  statements  involve risks and uncertainties
including,  but not limited to, the economic,  business,  and real estate market
conditions  in  the  Company's   market  areas,   competition,   regulatory  and
legislative  actions, the possibility that the Company will not be successful in
achieving  its  strategic  objectives,  the  pending  regulatory  review  of the
proposed  merger with Union Bank of California,  the planned  special meeting of
stockholders  to vote on the  proposed  merger  with Union  Bank of  California,
performance and contributions of employees and Directors,  the Company's ability
to retain high caliber bankers,  expected loan payments, loan originations,  and
future collateral  values, and other factors discussed in documents filed by the
Company with the Securities and Exchange Commission from time to time, including
the Company's  Annual Report on Form 10-K for the fiscal year ended December 31,
2002 and the  quarterly  Form 10-Q's filed by the Company . The Company does not
undertake,   and   specifically   disclaims  any   obligation,   to  update  any
forward-looking  statements to reflect  occurrences or  unanticipated  events or
circumstances after the date of such statements.

         This news release is available at the www.montereybaybank.com  Internet
site for no charge  and is  included  as an Exhibit to a Form 8-K filed with the
Securities and Exchange Commission that is available at the www.sec.gov Internet
site.


                        For further information contact:
                        --------------------------------

C. Edward Holden                                Mark R. Andino
Chief Executive Officer             or          Chief Financial Officer
President                                       Treasurer
(831) 768 - 4840                                (831) 768 - 4806
ed.holden@montereybaybank.com                   mark.andino@montereybaybank.com


                             General communication:
                             ----------------------
                            INFO@MONTEREYBAYBANK.COM
                             www.montereybaybank.com
                             Phone: (831) 768 - 4800
                              Fax: (831) 722 - 6794

                         --- financial data follows ---





                           MONTEREY BAY BANCORP, INC.
                                 (NASDAQ: MBBC)
                        Consolidated Financial Highlights
                                    Unaudited
                             (Dollars In Thousands)





                                                                        March 31,         December 31,
Financial Condition Data                                                     2003                 2002
- --------------------------------------------------------------          ---------         ------------
                                                                                        
Cash and cash equivalents                                                $  9,828             $ 11,447
Investment securities available for sale                                    7,070                7,030
Mortgage backed securities available for sale                              40,278               37,466

Loans held for sale                                                           475                1,545

Loans receivable held for investment:
      Residential one to four unit real estate loans                      175,942              187,471
      Multifamily five or more units real estate loans                    138,613              118,004
      Commercial and industrial real estate loans                         132,197              140,027
      Construction loans                                                   81,684               69,526
      Land loans                                                           23,598               24,801
      Commercial business loans                                            18,919               18,008
      Other loans                                                           9,129                9,216
                                                                         --------             --------

   Sub-total gross loans held for investment                              580,082              567,053

   (Less) / Plus:
      Undisbursed construction loan funds                                 (32,959)             (36,683)
      Unamortized purchase premiums, net of purchase discounts              1,142                  848
      Deferred loan fees and costs, net                                    (1,113)              (1,127)
      Allowance for loan losses                                            (8,436)              (8,162)
                                                                         --------             --------

Loans receivable held for investment, net                                 538,716              521,929

Investment in capital stock of the Federal Home Loan Bank ("FHLB")          4,726                4,679
Accrued interest receivable                                                 3,095                2,867
Premises and equipment, net                                                 7,004                7,161
Core deposit intangibles, net                                                 663                  833
Bank owned life insurance                                                   9,149                9,036
Real estate acquired via foreclosure, net                                      --                  846
Other assets                                                                4,799                4,857
                                                                         --------             --------

Total assets                                                             $625,803             $609,696
                                                                         ========             ========


Non-interest bearing demand deposits                                     $ 27,116             $ 23,549
Interest bearing NOW checking accounts                                     41,551               43,629
Savings accounts                                                           18,539               18,474
Money market accounts                                                     143,249              126,061
Certificates of deposit                                                   247,290              246,621
                                                                         --------             --------

Total deposits                                                            477,745              458,334
FHLB advances and other borrowings                                         88,417               93,805
Other liabilities                                                           1,399                1,454
                                                                         --------             --------

Total liabilities                                                         567,561              553,593
                                                                         --------             --------

Stockholders' equity                                                       58,242               56,103
                                                                         --------             --------

Total liabilities and stockholders' equity                               $625,803             $609,696
                                                                         ========             ========


                                       10





                           MONTEREY BAY BANCORP, INC.
                                 (NASDAQ: MBBC)
                  Consolidated Financial Highlights, Continued
                                    Unaudited
                 (Dollars In Thousands Except Per Share Amounts)





                                                                  Three Months Ended
                                                                       March 31,
                                                             -----------------------------
Operating Data                                                     2003               2002
- ----------------------------------------------------------         ----               ----

                                                                            
Interest income                                              $    8,980         $    8,755
Interest expense                                                  2,808              3,405
                                                             ----------         ----------

Net interest income before provision for loan losses              6,172              5,350
Provision for loan losses                                           325                325
                                                             ----------         ----------

Net interest income after provision for loan losses               5,847              5,025
                                                             ----------         ----------

Non-interest income:
     Customer service charges                                       394                351
     Gain on sale of loans held for sale                            123                 27
     Gain on sale of real estate acquired via foreclosure           114                 --
     Income from bank owned life insurance                          113                 --
     Commissions from sales of non-insured products                  28                 41
     Income from loan servicing                                      12                 14
     Gain on sale of mortgage backed securities                       1                 43
     Other income                                                    50                 36
                                                             ----------         ----------

Total non-interest income                                           835                512
                                                             ----------         ----------

Non-interest expense:
     Compensation and employee benefits                           2,217              1,905
     Occupancy and equipment                                        390                424
     Supplies, postage, telephone, & office expenses                171                168
     Amortization of intangible assets                              170                170
     Data and item processing                                       157                136
     Legal and accounting                                           126                119
     Advertising and promotion                                       37                 81
     Deposit insurance premiums                                      19                 51
     Other                                                          333                412
                                                             ----------         ----------

Total non-interest expense                                        3,620              3,466
                                                             ----------         ----------

Income before provision for income taxes                          3,062              2,071
Provision for income taxes                                        1,225                866
                                                             ----------         ----------

Net income                                                   $    1,837         $    1,205
                                                             ==========         ==========

Shares applicable to basic earnings per share                 3,380,948          3,348,387
Basic earnings per share                                     $     0.54         $     0.36
                                                             ==========         ==========

Shares applicable to diluted earnings per share               3,524,056          3,465,286
Diluted earnings per share                                   $     0.52         $     0.35
                                                             ==========         ==========

                                       11





                           MONTEREY BAY BANCORP, INC.
                                 (NASDAQ: MBBC)
                         Selected Ratios And Other Data
                                    Unaudited
                 (Dollars In Thousands Except Per Share Amounts)




                                                         Three Months Ended March 31,
                                                         ----------------------------
                                                          2003                 2002
                                                          ----                 ----
Profitability Ratios [1]
- ------------------------------------------
                                                                        
Return on average assets                                 1.20%                0.90%
Return on average equity                                12.73%                9.37%
Interest rate spread during the period                   4.10%                3.92%
Net interest income / average total assets               4.02%                3.98%
Net interest margin                                      4.27%                4.19%
Efficiency ratio                                        51.67%               59.13%


Other Information
- ------------------------------------------
Average total assets                                 $ 614,321            $ 537,373
Average interest earning assets                      $ 578,115            $ 510,421


                                                     March 31,         December 31,
                                                          2003                 2002
                                                          ----                 ----
Asset Quality Information
- ------------------------------------------
Non-accrual loans                                     $  2,578             $  2,643
Non-performing loans                                  $  2,920             $  2,643
Real estate acquired via foreclosure, net             $    --              $    846
Allowance for loan losses                             $  8,436             $  8,162

Non-performing loans /
     total assets                                        0.47%                0.43%
Allowance for loan losses /
     loans outstanding                                   1.54%                1.54%
Allowance for loan losses /
     non-accrual loans                                 327.23%              308.82%


Bank Regulatory Capital Ratios
- ------------------------------------------
Tangible capital ratio                                   8.71%                8.57%
Core capital ratio                                       8.71%                8.57%
Tier one risk based capital ratio                       11.75%               11.63%
Total risk based capital ratio                          13.00%               12.88%


Other Information
- ------------------------------------------
Full-service customer facilities                             8                    8
Limited service customer facilities                          1                    1
Stand alone loan production offices                          1                    1
Number of ATM's                                             11                   11
Loan to deposit ratio                                  112.86%              114.21%
Tangible book value per share                           $16.64               $16.00
Shares outstanding                                   3,460,974            3,454,315
Stock price at end of period                            $19.52               $19.95

- ------------------------------------------
[1] All applicable ratios reflect annualized figures.

                                       12