National Mercantile Reports Its Second Consecutive Year of Record Earnings

Earnings Grow 27 Percent to $5.6 Million, or $0.94 Per Share in 2006


LOS ANGELES, March 6, 2007 (PRIME NEWSWIRE) -- National Mercantile Bancorp (Nasdaq:MBLA), the holding company for Mercantile National Bank and South Bay Bank, N.A., today reported record earnings for 2006 with strong asset growth. For 2006, net income grew 27% to $5.6 million, or $0.94 per share, compared to $4.5 million, or $0.75 per share, in 2005. Fourth quarter net income was $1.7 million or $0.28 per diluted share, compared to $1.2 million or $0.21 per share in the fourth quarter a year ago.

"The joint proxy statement for the proposed merger of equals with FCB Bancorp of Camarillo became effective in mid-February, and we have scheduled a special meeting of shareholders for March 12, 2007 at 10:00 am at the company's headquarters in Century City. We encourage all shareholders to review the materials being sent to them and to vote their proxies promptly. Should shareholders approve the transaction as anticipated, the merger is expected to close following the shareholders meeting," Montgomery added. "We are pleased to report two consecutive years of record earnings and continue to see expansion in the local economy." The combined banks are expected to have total assets of over $1 billion in 12 full service offices and 3 loan production offices in Los Angeles, Ventura and Orange Counties.

REVIEW OF OPERATIONS

With strong loan growth and higher securities balances, revenue in 2006 (net interest income before provision for credit losses plus non-interest income) increased 15% to $25.1 million in 2006 from $21.9 million in 2005. Net interest income before provision for credit losses increased 12% to $23.3 million in 2006, from $20.8 million in 2005. In the fourth quarter of 2006, net interest income grew 2% to $5.8 million from $5.7 million a year ago. In 2006, the net interest margin was 5.14% compared to 5.58% in 2005. Fourth quarter net interest margin was 4.86% compared to 5.09% in the third quarter of 2006, and 5.51% in the fourth quarter of 2005.

The provision for credit losses was $248,000 during 2006, due to the growth in the loan portfolio, compared to a benefit of $84,000 in 2005, due to recoveries from previously charged off assets. The fourth quarter 2006 provision for credit losses was $104,000 compared to $40,000 a year ago. Noninterest income jumped 60.3%, to $1.8 million and $1.1 million, respectively, reflecting a $705,000 insurance settlement received by the Company in the fourth quarter of 2006 from a claim relating to collateral for a loan.

Operating (non-interest) expense increased 5% to $15.0 million from $14.4 million a year ago. "Revenue growth continues to outpace operating expenses, generating positive operating leverage and contributing to strong profitability improvements," said David Brown, Chief Financial Officer. Operating expenses included an after-tax charge for stock options of $105,000 in 4Q06 and $395,000 year-to-date related to the adoption of SFAS 123R. In 2005, this cost was not included in GAAP earnings but was disclosed in footnotes to the financial statements, and totaled $267,000 for the year.

Profitability continued to improve with strong gains in productivity reflected in an efficiency ratio of 59.8% in 2006 compared to 65.6% in 2005. The company generated a return on average assets (ROAA) of 1.16% and a return on average equity of 13.84% during 2006, versus 1.10% and 12.15%, respectively, a year ago.

In the first quarter of 2007, the company refinanced its trust preferred securities (TPS). The debt extinguishment in the first quarter 2007 resulted in a pre-tax charge of $1.6 million for the payment of the redemption premium and the write-off of the unamortized debt issuance cost. (It was previously reported in our December 26, 2006 press release that we expected this charge would be a fourth quarter 2006 event.) "The replacement of our 10.25% trust preferred securities with a 6.80% issue that will save us over $500,000 pre-tax per year," said Scott A. Montgomery, President and CEO.

BALANCE SHEET PERFORMANCE

Total assets increased 12% to $501.6 million at December 31, 2006, from $448.5 million a year ago. The loan portfolio grew 8% to $366.6 million at December 31, 2006, compared to $339.6 million at December 31, 2005.



 ---------------------------------------------------------------------
 Loan Portfolio Composition                                           
   (Dollars in thousands)

 
                                          December 31,
                                2006                      2005
                        -------------------       -------------------
                         Amount          %         Amount          %
                        --------        ---       --------        ---
 Commercial 
  loans - 
  secured and 
  unsecured             $102,662         28%      $ 89,474          6%
 Real estate loans:                                            
  Secured by                                                   
   commercial real                                             
   properties            141,741         39%       121,641         36%
  Secured by                                                   
   multifamily                                                 
   residential                                                 
   properties             17,602          5%        18,663          5%
  Secured by one                                               
   to four family                                              
   residential                                                 
   properties              8,790          2%        10,498          3%
                        --------        ---       --------        ---
    Total real
     estate loans        270,795         74%       150,802         44%
 Construction and                                              
  land development                                             
  loans                   83,188         23%        92,077         27%
 Consumer:                                                     
  installment,                                                 
  home equity                                                  
  and unsecured           12,663          3%         7,239          2%
                        --------        ---       --------        ---
   Total loans
    outstanding         $366,646        100%      $339,592        100%
                        ========        ===       ========        ===

Total deposits increased 5% to $380.6 million at December 31, 2006, compared to $363.2 million a year earlier, fueled by strong growth in money market accounts, which grew 56% year-over-year and now represent 31% of total deposits, up from 21% a year earlier. Core deposits, of which money market accounts are the largest component and exclude time certificates $100,000 and over, accounted for 79% of total deposits at December 31, 2006, up from 76% a year ago.

Shareholders' equity increased 18% to $45.1 million, equating to a book value per share of $7.73, at December 31, 2006, compared to $38.2 million, or $6.77 per share, at December 31, 2005. Tangible book value increased 19% to $7.03 per share at December 31, 2006, from $5.99 per share at December 31, 2005.

"Credit quality remains excellent this year following the sale of our only piece of other real estate owned," said Robert Bartlett, Chief Credit Officer. At quarter-end, non-performing assets totaled $303,000 or 0.06% of total assets, down from $1.4 million, or 0.32% of total assets at December 31, 2005. Net charge-offs were just $38,000 year-to-date. There were no loan delinquencies at December 31, 2006. National Mercantile's allowance for credit losses was 1.30% of gross loans at December 31, 2006, compared to 1.32% a year ago.

ABOUT NATIONAL MERCANTILE BANCORP

National Mercantile Bancorp is the holding company for Mercantile National Bank and South Bay Bank, with offices located in Century City, Encino, Torrance, El Segundo, Costa Mesa and Beverly Hills, all among California's highest value markets. The banks' focus is on business banking with specialty lending expertise in the entertainment, healthcare, professional services, real estate escrow, business and residential construction, property management industries and community-based non-profit organizations. The company is building a premier business banking franchise with experienced loan officers providing highly personalized service.

This press release contains forward-looking statements about the Company. Forward-looking statements consist of descriptions of plans or objectives for future operations, products or services, forecasts of revenues, earnings or other measures of economic performance and assumptions underlying or relating to any of the foregoing. Because forward-looking statements discuss future events or conditions and not historical facts, they often include words such as "believe," "potential," "confident," "encourage or encouraging," "will be," "anticipate," "estimate" or similar expressions. Do not rely unduly on forward-looking statements. They give the Company's expectations about the future and are not guarantees or predictions of future events, conditions or results. Forward-looking statements speak only as of the date they are made, and the Company does not undertake to update them to reflect changes that occur after that date. Many factors, most beyond the company's control, could cause actual results to differ significantly from the Company's expectations. These factors include, among other things, changes in interest rates, which affect margins, impact funding sources or alter loan demand; increased competitive pressures; changes in national and local economic conditions; fluctuations in the California real estate markets; changes in fiscal policy, monetary policy, legislative or regulatory environments; changes in the credit quality of the Company's loan portfolio, the Company's abilities to realize further efficiencies and achieve growth targets, and finalization of year-end audit results. These and other factors are discussed in greater detail in the Company's Annual Report on Form 10-KSB for the year ended December 31, 2005.

Additional Information

The proposed merger will be submitted to the shareholders of each of National Mercantile Bancorp and FCB Bancorp for their consideration. First California Financial Group, Inc. filed a registration statement with the SEC, which includes a joint proxy statement/prospectus that has been mailed to the shareholders of each of National Mercantile Bancorp and FCB Bancorp, and each of First California Financial Group, National Mercantile Bancorp and FCB Bancorp may file other relevant documents concerning the proposed merger with the SEC. Shareholders are urged to read the registration statement and the joint proxy statement/prospectus regarding the proposed merger and any other relevant documents filed with the SEC, as well as any amendments or supplements to those documents, because they contain important information. You are able to obtain a free copy of the joint proxy statement/prospectus, as well as other filings containing information about First California Financial Group, National Mercantile Bancorp and FCB Bancorp, at the SEC's website (http://www.sec.gov). You may also obtain these documents, free of charge, by accessing National Mercantile Bancorp's website (http://www.mnbla.com) under the tab "Investor Relations", or by accessing FCB Bancorp's website (http://www.fcbank.com) under the tab "About Us."

National Mercantile Bancorp and FCB Bancorp and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of National Mercantile Bancorp and FCB Bancorp in connection with the proposed merger. Information about the directors and executive officers of National Mercantile Bancorp is set forth in the proxy statement for its 2006 annual meeting of shareholders, as filed with the SEC on April 20, 2006. Information about the directors and executive officers of FCB Bancorp is set forth in its Annual Report on Form 10-K, as filed with the SEC on March 31, 2006. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the registration statement and the joint proxy statement/prospectus filed with the SEC regarding the proposed merger. You may obtain free copies of these documents as described above.



 National Mercantile Bancorp and Subsidiaries
 Selected Statement of Operations Data and Ratios:


 (Unaudited) 
 (In thousands, except share data) 
                                                 
                                  For the Three Months Ended
                           -------------------------------------------
                           Dec. 31,           Sept. 30,       June 30,
                            2006                2006            2006 
                           ===========================================
 Interest income           $ 9,288             $ 9,248         $ 8,913
 Interest expense            3,483               3,387           2,947
                           -------             -------         -------
  Net interest income
   before provision for                                         
   credit losses             5,805               5,861           5,966
 Provision for credit                                     
  losses                       104                  72              40
                           -------             -------         -------
   Net interest income                                    
    after provision                                       
    for credit losses        5,701               5,789           5,926
 Other operating income:                                                 
  Deposit-related and                                      
   other customer                                          
   services                    258                 255             234
  Other operating                                          
   income                      865                 573            (310)
 Other operating                                          
  expenses                   3,944               3,533           3,819
                           -------             -------         -------
 Income before                                            
  provision for                                           
  income taxes               2,880               3,084           2,031
 Provision for income                                     
  taxes                      1,196               1,328             885
                           -------             -------         -------
 Net income                $ 1,684             $ 1,756         $ 1,146
                           =======             =======         =======
                                                          
 Earnings per share:                                      
   Basic                   $  0.30             $  0.32         $  0.21
   Diluted                 $  0.28             $  0.29         $  0.19
                                                          
                                                          
 Weighted average                                         
  shares outstanding:                                     
   Basic                 5,597,733           5,545,903       5,542,441
   Diluted               6,004,100           5,985,837       6,035,527
                                                          
 RATIOS                                                   
 Return on quarterly                                      
  average assets              1.34%               1.43%           0.94%
 Return on quarterly                                                  
  average equity             15.29%              17.05%          11.66%
 Net interest margin                                                  
  - average earning                                                   
  assets                      4.86%               5.09%           5.26%
 Operating expense                                                    
  ratio                       3.13%               2.88%           3.14%
 Efficiency ratio (b)        56.93%              52.82%          64.84%


                                    For the Three Months Ended 
                           -------------------------------------------
                           March 31,           Dec. 31,       Annual %
                            2006(a)             2005(a)        Change
                           ===========================================
 Interest income           $ 8,051             $ 7,585           22.5%
 Interest expense            2,335               1,907           82.6%
                           -------             -------
   Net interest                                                       
    income before                                                     
    provision for                                                     
    credit losses            5,716               5,678            2.2%
 Provision for credit                                                 
  losses                        32                  40             n/a
                           -------             -------
   Net interest income                                                
    after provision                                                   
    for credit losses        5,684               5,638            1.1%
 Other operating                                                      
  income:                                                             
  Deposit-related and                                                  
   other customer                                            
   services                    232                 242            6.6%
  Other operating                                                      
   income                     (315)               (194)        -545.9%
 Other operating                                                      
  expenses                   3,732               3,561           10.8%
                           -------             -------
 Income before                                                        
  provision for                                                       
  income taxes               1,869               2,125           35.5%
 Provision for income                                                 
  taxes                        813                 883           35.4%
                           -------             -------
 Net income                $ 1,056             $ 1,242           35.6%
                           =======             =======        

 Earnings per share:                                                  
   Basic                   $  0.19          $ 0.229619           30.7%
   Diluted                 $  0.18          $ 0.209591           33.6%

 Weighted average
  shares outstanding:                                                 
   Basic                 5,518,383           5,408,969                
   Diluted               6,002,461           5,925,829                

 RATIOS                                                               
 Return on quarterly                                                  
  average assets              0.93%               1.12%                
 Return on quarterly                                                  
  average equity             10.82%              12.95%                
 Net interest margin                                                  
  - average earning                                                   
  assets                      5.49%               5.51%                
 Operating expense                                                    
  ratio                       3.30%               3.22%                
 Efficiency ratio (b)        66.25%              62.19%                
 
 (a) As restated.
 (b) Other operating expense divided by net interest income and other 
     operating income.


 National Mercantile Bancorp and Subsidiaries
 Selected Statement of Operations Data and Ratios: 
 (Unaudited) 
 (In thousands, except share  data)  

                                          For the Year Ended
                              ========================================
                              December 31,   December 31,     Annual %
                                 2006           2005           Change
                              ========================================
 Interest income                $35,500        $26,265           35.2%
 Interest expense                12,152          5,483          121.6%
                                -------        -------
  Net interest income                                       
   before provision for                                     
   credit losses                 23,348         20,782           12.3%
 Provision for credit                                       
  losses                            248            (84)        -395.2%
                                -------        -------
  Net interest income                                       
   after provision for                                      
   credit losses                 23,100         20,866           10.7%
 Other operating income:                                    
  Deposit-related and                                        
   other customer services          979          1,060           -7.6%
  Other operating income            813             58          -92.9%
 Other operating expenses        15,028         14,376            4.5%
                                -------        -------
 Income before provision                                    
  for income taxes                9,864          7,608           29.7%
 Provision for income                                       
  taxes                           4,222          3,159           33.6%
                                -------        -------
 Net income                     $ 5,642        $ 4,449           26.8%
                                =======        =======
                                                            
 Earnings per share:                                        
   Basic                        $  1.02           0.96            6.3%
   Diluted                      $  0.94           0.75           25.3%
                                                            
                                                                
 Weighted average shares 
  outstanding:
   Basic                      5,551,570      4,630,186
   Diluted                    6,007,186      5,897,758

 Total shares 
  outstanding at
  period                      5,650,147      5,503,780

 RATIOS
 Return on average assets          1.16%          1.10%
 Return on average equity         13.84%         12.15%
 Net interest margin - 
  average earning assets           5.14%          5.58%
 Operating expense ratio           3.10%          3.55%
 Efficiency ratio (c)             59.78%         65.64%


 (c) Other operating expense divided by net interest income and other
     operating income.



 Selected Financial Condition Ratios:
 (Unaudited)                             
 (In thousands, except ratios and shares)


                   Dec. 31,   Sept. 30,  June 30,   March 31,  Dec. 31,
                     2006       2006       2006       2006       2005
                   --------   --------   --------   -------    --------
 Average
  quarterly 
  assets           $499,378   $486,336   $487,372   $458,881  $438,715
 Nonperforming
  assets
   Nonaccrual
    loans                --        338        343        300       319
   Loans 90 days
    past due 
    and still 
    accruing             --         --         --         --        --
   Other real
    estate owned         --         --         --         --        --
   Other 
    property
    owned               303         --         --         --     1,056
                    -------    -------    -------    -------   -------
 Total
  nonperforming
  assets                303        338        343        300     1,375

 Loan to deposit
  ratio               96.33%     94.58%     94.55%     87.45%    93.50%
 Allowance for
  credit losses
  to total loans       1.30%      1.30%      1.32%      1.29%     1.32%
 Allowance for
  credit losses to
  nonperforming
  assets            1564.36%   1379.03%   1355.10%   1520.67%   324.95%


 National Mercantile Bancorp and Subsidiaries
 Selected Financial Condition Data:
 (Unaudited)                         
 (In thousands, except share data)

                   Dec. 31,  Sept. 30,   June 30,   March 31,  Dec. 31,
                     2006       2006       2006       2006       2005
                   ---------------------------------------------------
 ASSETS
  Cash and due 
   from banks-
   demand          $ 11,438   $ 10,709   $ 15,002   $ 15,211   $ 13,507
  Due from 
   banks-
   interest
   bearing            2,000      2,000      2,263      2,000      2,000
  Federal funds
   sold and
   securities
   purchased
   under
   agreements
   to resell             --         --        600      2,790        685
  Investment
   securities       104,414    105,478    103,970     88,263     74,370
 Loans
  Commercial        102,662    100,757     91,485     93,517     89,474
  Real estate       168,133    162,237    164,394    159,724    150,802
  Construction
   and land
   development       83,188     88,407     88,717     96,121     92,077
  Consumer and
   other loans       12,663      7,434      7,686      5,133      7,239
                   --------   --------   --------   --------   --------
 Total loans
  outstanding       366,646    358,835    352,282    354,495    339,592
  Deferred net
   loan fees           (928)      (615)    (1,053)      (995)    (1,034)
                   --------   --------   --------   --------   --------
  Loans
   receivable,
   net              365,718    358,220    351,229    353,500    338,558
   Allowance for
    loan and
    lease losses     (4,740)    (4,661)    (4,648)    (4,562)    (4,468)
                   --------   --------   --------   --------   --------
     Net loans
      receivable    360,978    353,559    346,581    348,938    334,090
 Goodwill and
  intangible
  assets              4,410      4,464      4,520      4,576      4,632
 Accrued 
  interest
  receivable 
  and other
  assets             18,323     17,987     18,466     17,554     19,175
                   --------   --------   --------   --------   --------
    Total assets   $501,563   $494,197   $491,402   $479,332   $448,459
                   ========   ========   ========   ========   ========

 LIABILITIES & CAPITAL
 Deposits:
  Noninterest-
   bearing
   demand          $115,745   $115,740   $115,650   $122,638   $115,924
  Interest-
   bearing
   demand
   deposits          26,372     27,768     30,973     31,716     36,018
  Money market
   accounts         118,704    109,210     97,578     91,885     76,334
  Savings            22,463     24,435     24,102     26,336     28,208
  Time certificates
   of deposit:
   $100,00               
    or more          80,080     84,094     86,756    114,296     87,468
   Under
    $100,000         17,250     18,171     17,516     18,481     19,256
                   --------   --------   --------   --------   --------
    Total 
     deposits       380,614    379,418    372,575    405,352    363,208
 Other borrowings    55,300     52,600     57,250     16,400     28,337
 Junior
  subordinated
  deferrable
  interest
  debentures         15,464     15,464     15,464     15,464     15,464
 Accrued
  interest and
  other
  liabilities         5,116      3,938      7,077      3,414      3,288
                   --------   --------   --------   --------   --------
   Total
    liabilities     456,494    451,420    452,366    440,630    410,297
 Total
  shareholders'
  equity             45,069     42,777     39,036     38,702     38,162
                   --------   --------   --------   --------   --------
  Total
   liabilities &
   shareholders'
   equity          $501,563   $494,197   $491,402   $479,332   $448,459
                   ========   ========   ========   ========   ========


 Book value per
  common share     $   7.73   $   7.45   $   6.89   $   6.79   $   6.72
 Tangible book 
  value per 
  common share (d) $   7.03   $   6.75   $   6.18   $   6.07   $   5.99


 (d) Total common equity, less goodwill and other intangible assets;
     divided by fully-diluted shares outstanding.


            

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