UNITED STATES
                       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):

                                March 15, 2007

                                TriCo Bancshares
             (Exact name of registrant as specified in its charter)

       California                   0-10661                   94-2792841
------------------------        ---------------          --------------------
     (State or other         (Commission File No.)         (I.R.S. Employer
     jurisdiction of                                      Identification No.)
incorporation or organization)

                 63 Constitution Drive, Chico, California 95973
--------------------------------------------------------------------------------
              (Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code:(530) 898-0300

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

 [ ] Written  communications  pursuant to Rule 425 under the  Securities Act (17
     CFR 230.425)

 [ ] Soliciting  material pursuant to rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

 [ ] Pre-commencement   communications  pursuant  to  Rule  14d-2(b)  under  the
     Exchange Act (17 CFR 240.14d-2(b))

 [ ] Pre-commencement   communications  pursuant  to  Rule  13e-4(c)  under  the
     Exchange Act (17 CFR 240.13e-4(c))


Item 4.01 Changes in Registrant's Certifying Accountant

(a) KPMG, LLP ("KPMG") was previously the principal independent  accountants for
TriCo Bancshares (the  "Company").  On March 15, 2007, KPMG was dismissed as the
Company's principal independent accountants.  The decision to change accountants
was approved by the audit committee of the board of directors.

The  audit  reports  of KPMG on the  consolidated  financial  statements  of the
Company and  subsidiaries  as of and for the years ended  December  31, 2006 and
2005 did not contain an adverse  opinion or disclaimer of opinion,  and were not
qualified or modified as to uncertainty,  audit scope or accounting  principles.
The audit report of KPMG on  management's  assessment  of the  effectiveness  of
internal  control over  financial  reporting and the  effectiveness  of internal
control  over  financial  reporting  as of  December  31,  2006 and 2005 did not
contain an adverse  opinion or disclaimer of opinion,  and were not qualified or
modified as to uncertainty, audit scope or accounting principles.




During the two fiscal years ended December 31, 2006, and the subsequent  interim
period  through  March 15, 2007,  there were no  disagreements  with KPMG on any
matter of accounting principles or practices, financial statement disclosure, or
auditing  scope  or  procedure,  which  disagreement,  if  not  resolved  to the
satisfaction  of KPMG,  would have caused KPMG to make  reference in  connection
with its reports to the subject matter of the disagreement.

During the two fiscal years ended December 31, 2006, and the subsequent  interim
period through March 15, 2007, there have been no reportable  events of the type
required to be disclosed by Item 304(a)(1)(v) of Regulation S-K.

A letter from KPMG is attached as Exhibit 16.1 to this Form 8-K.

(b) On March 15, 2007, the Company's Audit  Committee  engaged Moss Adams LLP as
the  Company's  new  principal  independent  accountant  to audit the  Company's
financial  statements  for the year ended  December  31,  2007.  The decision to
engage  Moss  Adams  will  be  submitted  to  the  Company's   shareholders  for
ratification  at the Annual  Meeting  of  Shareholders  in May 2007.  During the
Company's  two most recent  fiscal years prior to the  engagement of Moss Adams,
and  through  March 15,  2007,  the  Company  did not  consult  with Moss  Adams
regarding  any  of the  matters  described  by  Item  304(a)(2)(i)  or  (ii)  of
Regulation S-K

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

    16.1  Letter dated March 21, 2007 to the Securities and Exchange  Commission
          from KPMG.

SIGNATURES

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.

Date: March 21, 2007                                TRICO BANCSHARES
                                                    (Registrant)

                                                    By: /s/Thomas J. Reddish
                                                        ------------------------
                                                        Thomas J. Reddish
                                                        Executive Vice President
                                                        Chief Financial Officer





Exhibit 16.1

March 21, 2007

Securities and Exchange Commission
Washington, D.C. 20549


Ladies and Gentlemen:

We were previously  principal  accountants  for TriCo  Bancshares and, under the
date of March 13, 2007,  we reported on the consolidated financial statements of
TriCo Bancshares as of and for the years ended  December 31,  2006 and 2005, and
management's  assessment of the effectiveness of internal control over financial
reporting as of  December 31, 2006,  and the  effectiveness  of internal control
over financial  reporting as of  December 31, 2006.  On March 15,  2007, we were
dismissed. We have read TriCo Bancshares' statements included under Item 4.01(a)
of its Form 8-K dated March 15, 2007, and we agree with such statements,  except
that we are not in a  position  to agree or  disagree  with  TriCo  Bancshares'
statement  that the change was  approved by the audit  committee of the board of
directors.

Very truly yours,


/s/KPMG LLP
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