SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 8-K

                Current Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

         Date of Report (Date of earliest event reported) June 22, 1999

                                HUMBOLDT BANCORP
             (Exact name of registrant as specified in its charter)

           California                  0-27784                93-1175446
(State or other jurisdiction of     (Commission            (I.R.S. Employer
incorporation or organization)      File Number)           Identification No.)


            701 Fifth Street, Eureka, California 95501; 707-445-3233
          (Address and telephone number of principal executive offices)


Item 2.  Acquisition of Assets.

        Pursuant to an "Agreement And Plan Of Reorganization And Merger" entered
into  as of  June  22,  1999  (the  "Merger  Agreement"),  Humboldt  Bancorp,  a
California bank holding company,  will acquire both Global Bancorp, a California
bank holding company  headquartered  in Napa,  California,  and its wholly-owned
subsidiary Capitol Thrift & Loan association ("Capitol Thrift").  Capitol Thrift
is a California  licensed  industrial  loan  company.  The  acquisition  will be
effected by the merger of both Global  Bancorp and Capitol  Thrift into Humboldt
Bank, a wholly  owned  subsidiary  of Humboldt  Bancorp.  Following  the merger,
Humboldt Bank will be the sole surviving corporation. It is anticipated that the
business of Capitol Thrift will be operated as a division of Humboldt Bank.

        The  total  consideration  to  be  paid  for  the  acquisition  will  be
$16,500,000,   comprised  of  the  following:   (i)  $9,000,000  in  cash;  (ii)
approximately $2,000,000 in Humboldt Bancorp common stock computed by the total
amount of shareholders' equity in Global Bancorp,  less $9,000,000 to be paid in
cash and  merger  expenses  in excess of  $100,000;  and  (iii) the  balance  of
approximately $5,500,000 in the form of a Humboldt Bank promissory note, payable
in full on January 30, 2002, to accrue interest at 8% per annum,  and subject to
certain  adjustments  for loan losses and expenses as  identified  in the Merger
Agreement.  Pursuant to the Merger Agreement, up to $2,000,000 of the promissory
note  may be paid at  maturity  in the  form of  Humboldt  common  stock  at the
election of the holders of the promissory note. Among other  conditions,  before
the merger may be consummated, it must be approved by the shareholders of Global
Bancorp,  and  by  both  the  Federal  Deposit  Insurance  Corporation  and  the
California Department of Financial Institutions.  In addition, as a condition to
the consummation of the merger, Humboldt Bancorp is required to raise capital
through the sale of its common stock.

        Humboldt Bancorp,  Humboldt Bank, Global Bancorp, and Capitol Thrift may
terminate the Merger  Agreement at any time by mutual consent.  In addition,  if
Global  Bancorp  terminates  the Merger  Agreement  or its  shareholders  do not
approve  the Merger  Agreement,  Global  Bancorp or Capitol  Thrift  must pay to
Humboldt Bancorp $250,000 in cash. Moreover, if Global Bancorp or Capitol Thrift
terminates the Merger  Agreement and within 180 days,  Global Bancorp or Capitol
Thrift  approve  another sale or execute  another  letter of intent,  or a third
party acquires 15% or more of the outstanding  shares of Global Bancorp,  Global
Bancorp or Capitol Thrift must pay to Humboldt  Bancorp $350,000 in cash. If the
Merger Agreement is terminated by Humboldt Bancorp or Global Bancorp  terminates

<PAGE>2

the Merger Agreement because of a breach of Humboldt  Bancorp's  representations
and  warranties,  or if there is a failure by Humboldt  Bancorp to complete  its
public  offering,  then Humboldt  Bancorp must pay to Global  Bancorp the sum of
$250,000.

Item 7.  Financial Statements and Exhibits.

        (a)    Financial statements of businesses acquired.

               Financial statements of Global Bancorp and Capitol Thrift and pro
               forma  information  will be filed by amendment  within 60 days of
               the due date of this Form 8-K.

        (b)    Pro forma financial information.

               Pro forma  information  will be filed by amendment within 60 days
               of the due date of this Form 8-K.

        (c)    Exhibits.

               2.1    Agreement And Plan Of  Reorganization  And Merger (without
                      exhibits)  between and among  Humboldt  Bancorp,  Humboldt
                      Bank, Global Bancorp, and Capitol Thrift.


                                           SIGNATURE

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


Dated: July 7, 1999                                HUMBOLDT BANCORP,
                                                   a California Corporation


                                                   /s/ THEODORE MASON
                                                       ---------------
                                                       Theodore Mason,
                                                       President
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SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 8-K

                Current Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

         Date of Report (Date of earliest event reported) June 22, 1999

                                HUMBOLDT BANCORP
             (Exact name of registrant as specified in its charter)

           California                  0-27784                93-1175446
(State or other jurisdiction of     (Commission            (I.R.S. Employer
incorporation or organization)      File Number)           Identification No.)

            701 Fifth Street, Eureka, California 95501; 707-445-3233
          (Address and telephone number of principal executive offices)

Item 2.  Acquisition of Assets.

        Pursuant to an "Agreement And Plan Of Reorganization And Merger" entered
into  as of  June  22,  1999  (the  "Merger  Agreement"),  Humboldt  Bancorp,  a
California bank holding company,  will acquire both Global Bancorp, a California
bank holding company  headquartered  in Napa,  California,  and its wholly-owned
subsidiary Capitol Thrift & Loan association ("Capitol Thrift").  Capitol Thrift
is a California  licensed  industrial  loan  company.  The  acquisition  will be
effected by the merger of both Global  Bancorp and Capitol  Thrift into Humboldt
Bank, a wholly  owned  subsidiary  of Humboldt  Bancorp.  Following  the merger,
Humboldt Bank will be the sole surviving corporation. It is anticipated that the
business of Capitol Thrift will be operated as a division of Humboldt Bank.

        The  total  consideration  to  be  paid  for  the  acquisition  will  be
$16,500,000,   comprised  of  the  following:   (i)  $9,000,000  in  cash;  (ii)
approximately $2,000,000 in Humboldt Bancorp common stock computed by the total
amount of shareholders' equity in Global Bancorp,  less $9,000,000 to be paid in
cash and  merger  expenses  in excess of  $100,000;  and  (iii) the  balance  of
approximately $5,500,000 in the form of a Humboldt Bank promissory note, payable
in full on January 30, 2002, to accrue interest at 8% per annum,  and subject to
certain  adjustments  for loan losses and expenses as  identified  in the Merger
Agreement.  Pursuant to the Merger Agreement, up to $2,000,000 of the promissory
note  may be paid at  maturity  in the  form of  Humboldt  common  stock  at the
election of the holders of the promissory note. Among other  conditions,  before
the merger may be consummated, it must be approved by the shareholders of Global
Bancorp,  and  by  both  the  Federal  Deposit  Insurance  Corporation  and  the
California Department of Financial Institutions.  In addition, as a condition to
the consummation of the merger, Humboldt Bancorp is required to raise capital
through the sale of its common stock.

        Humboldt Bancorp,  Humboldt Bank, Global Bancorp, and Capitol Thrift may
terminate the Merger  Agreement at any time by mutual consent.  In addition,  if
Global  Bancorp  terminates  the Merger  Agreement  or its  shareholders  do not
approve  the Merger  Agreement,  Global  Bancorp or Capitol  Thrift  must pay to
Humboldt Bancorp $250,000 in cash. Moreover, if Global Bancorp or Capitol Thrift
terminates the Merger  Agreement and within 180 days,  Global Bancorp or Capitol
Thrift  approve  another sale or execute  another  letter of intent,  or a third
party acquires 15% or more of the outstanding  shares of Global Bancorp,  Global
Bancorp or Capitol Thrift must pay to Humboldt  Bancorp $350,000 in cash. If the
Merger Agreement is terminated by Humboldt Bancorp or Global Bancorp  terminates
2

the Merger Agreement because of a breach of Humboldt  Bancorp's  representations
and  warranties,  or if there is a failure by Humboldt  Bancorp to complete  its
public  offering,  then Humboldt  Bancorp must pay to Global  Bancorp the sum of
$250,000.

Item 7.  Financial Statements and Exhibits.

        (a)    Financial statements of businesses acquired.

               Financial statements of Global Bancorp and Capitol Thrift and pro
               forma  information  will be filed by amendment  within 60 days of
               the due date of this Form 8-K.

        (b)    Pro forma financial information.

               Pro forma  information  will be filed by amendment within 60 days
               of the due date of this Form 8-K.

        (c)    Exhibits.

               2.1    Agreement And Plan Of  Reorganization  And Merger (without
                      exhibits)  between and among  Humboldt  Bancorp,  Humboldt
                      Bank, Global Bancorp, and Capitol Thrift.

                                           SIGNATURE

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

Dated: July 7, 1999                                HUMBOLDT BANCORP,
                                                   a California Corporation

                                                   /s/ THEODORE MASON
                                                       ---------------
                                                       Theodore Mason,
                                                       President