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):

                                April 26, 2007

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

       California                   0-10661                   94-2792841
------------------------        ---------------          --------------------
(State or other jurisdiction  (Commission File No.)         (I.R.S. Employer
of incorporation or organization                          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 1.01 Entry into a Material Definitive Agreement

On April 26, 2007,  Tri Counties  Bank, a California  banking  organization  and
wholly owned  subsidiary of TriCo  Bancshares  (the  "Company"),  entered into a
letter agreement with Mr. Daniel K. Bailey (the "Letter Agreement").  The Letter
Agreement provides that Mr. Bailey will become Executive Vice  President--Retail
Banking of Tri Counties Bank  effective May 22, 2007.  The material terms of the
Letter Agreement and related  agreements  between the Company and Mr. Bailey are
summarized  in Item  5.02(c)  of  this  Current  Report  on Form  8-K  which  is
incorporated herein by reference.

Item 5.02 Departure  of Directors or Certain  Officers;  Election of  Directors;
          Appointment of Certain Officers;  Compensatory Arrangements of Certain
          Officers

(c) On May 2, 2007,  the Company  announced  that Mr. Daniel K. Bailey,  age 38,
will  become  Executive  Vice  President--Retail  Banking of Tri  Counties  Bank
effective  May 22,  2007 and  subject to  approval  of the title by the Board of
Directors.  Mr.  Bailey had been with Wells  Fargo  Bank,  NA since  1991,  most
recently  as Senior  Vice  President  and  Regional  Initiatives  Manager in the
Sacramento  office,  responsible  for the small  business and  licensed  banking
strategy for 120 retail branches in northern  California.  Wells Fargo is not an
affiliate of the Company.  Mr. Bailey  received a bachelors of science degree in
business  administration  from  California  State  University,  Chico,  and is a
graduate of the Pacific Coast Banking School.

On April 26, 2007,  Tri Counties  Bank entered into the Letter  Agreement  which
sets  forth  certain   understandings  and  arrangements  with  respect  to  the
employment  relationship of Mr. Bailey with the Company.  Mr.  Bailey's  initial
annual  base  salary  will be  $190,000  and he will be paid a  hiring  bonus of
$25,000.  Mr. Bailey's  minimum annual  incentive cash bonus will be $50,000 for
the 2007 calendar year. For future years,  his annual  incentive cash bonus will
be based on his and the  Company's  achievement  of  pre-determined  performance
goals  established  by the  Company's  Compensation  and  Management  Succession
Committee (the "Committee"), and will generally be targeted at 50% of his annual
base salary.

The Letter  Agreement  provides that it is  anticipated  that the Committee will
grant to Mr.  Bailey a stock option for 52,500  shares of the  Company's  common
stock under the  Company's  2001 Stock  Option  Plan.  The  options  will have a
per-share  exercise  price equal to the closing  price of the  Company's  common
stock on the date of grant. Any future grants of stock options to Mr. Bailey are
subject to approval of the Committee but are anticipated to generally  reflect a
targeted number of shares  equivalent to approximately  50% of Mr. Bailey's then
annual base salary divided by the Black-Scholes value at the time of grant.

Mr. Bailey will be eligible to participate in the Tri Counties Bank Supplemental
Executive  Retirement Plan or a similar plan which may be adopted in the future.
Mr. Bailey will also be eligible to participate in the Company's health, dental,
disability  and other  insurance  plans,  401(k)  savings plan,  Employee  Stock
Ownership  Plan,  Executive  Deferred  Compensation  Plan,  and other  plans and
arrangements that are generally available to other Company  executives.  He will
also  receive a car  allowance  of  $1,000.00  per month and be  reimbursed  for
reasonable  out-of-pocket  expenses,  including $0.15 per mile,  incurred in his
performance  of official  Company  business.  A copy of the Letter  Agreement is
attached as Exhibit 10.1 to this Current Report on Form 8-K and is  incorporated
herein by reference.

Mr. Bailey and the Company will enter into a Change of Control  Agreement on the
same terms as other  executives  of the Company in the form  attached as Exhibit
10.2 to the  Company's  Quarterly  Report  on Form  10-Q for the  quarter  ended
September  30,  2005,   previously   filed  with  the  Securities  and  Exchange
Commission,  which is  incorporated  herein by reference.  The Change of Control
Agreement provides benefits if the Company experiences a change in control.





Mr. Bailey and the Company will enter into an  Indemnification  Agreement on the
same terms as other  executives  of the Company in the form  attached as Exhibit
10.21 to the Company's  Quarterly Report on Form 10-Q for the quarter ended June
30, 2004, previously filed with the Securities and Exchange Commission, which is
incorporated herein by reference.

A copy of the press release announcing Mr. Bailey's appointment as the Company's
Executive  Vice  President--Retail  Banking is attached as Exhibit  99.1 to this
Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits

     (c)  Exhibits

     Exhibit Number     Document

       10.1    Letter  Agreement  dated April 26, 2007 between Tri Counties Bank
               and Daniel K. Bailey

       10.2*   Form of Change of  Control  Agreement  between  the  Company  and
               Daniel K. Bailey filed as Exhibit 10.2 to the Company's Quarterly
               Report on Form 10-Q for the quarter ended September 30, 2005

       10.3*   Form of Indemnification Agreement among the Company, Tri Counties
               Bank and Daniel K. Bailey filed as Exhibit 10.21 to the Company's
               Quarterly Report on Form 10-Q for the quarter ended June 30, 2004

       99.1    Press release dated May 2, 2007

       *Previously filed and incorporated by reference

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: May 2, 2007       TRICO BANCSHARES
                        (Registrant)

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





                                  EXHIBIT INDEX

     Exhibit Number     Description of Exhibits

       10.1    Letter  Agreement  dated April 26, 2007 between Tri Counties Bank
               and Daniel K. Bailey

       10.2*   Form of Change of  Control  Agreement  between  the  Company  and
               Daniel K. Bailey filed as Exhibit 10.2 to the Company's Quarterly
               Report on Form 10-Q for the quarter ended September 30, 2005

       10.3*   Form of Indemnification Agreement among the Company, Tri Counties
               Bank and Daniel K. Bailey filed as Exhibit 10.21 to the Company's
               Quarterly Report on Form 10-Q for the quarter ended June 30, 2004

       99.1    Press release dated May 2, 2007

      *Previously filed and incorporated by reference




EXHIBIT 10.1


April 24, 2007

Daniel K. Bailey
1218 Carson Street
Colusa, CA 95932

Dear Dan:

On behalf of Tri Counties Bank, I am pleased to confirm our offer to you for the
position of  Executive  Vice  President,  Retail  Banking.  The  Executive  Vice
President  title is subject to  approval of the Board of  Directors  and will be
placed  on the  agenda  of the  next  scheduled  board  meeting  following  your
reporting  date.  The  position  is located in Chico and  reports to Rick Smith,
President and Chief Executive  Officer.  Your anticipated  start date is May 22,
2007 and is contingent upon completion of an acceptable background check.

Your annual base salary will be $190,000.  In addition to your base salary,  you
will be paid a hiring  bonus of $25,000.  For  calendar  year 2007 your  minimum
incentive annual bonus will be guaranteed at $50,000. On a go forward basis your
annual bonus will be based on achievement of  pre-determined  performance  goals
and will be targeted at 50 percent of your annual base salary.

You will also be granted options to purchase 52,500 shares of TRICO  BANCSHARES,
INC.  (TRICO) common stock  pursuant to and under the terms of TRICO's  Employee
Stock  Option  Plan.  While  future  grants are  subject  to Board of  Directors
approval, and are therefore not guaranteed, the annual targeted number of shares
will be  approximately  50 percent of your  annual  base  salary  divided by the
Black-Scholes value at time of grant.

As we  discussed  the Bank will also  initiate  a Change  of  Control  Agreement
consistent with that of other Bank  executives.  The Agreement will be effective
upon your employment.

Please also note that it is also our  intention to include you as a  participant
in the Bank's Supplemental  Executive  Retirement Plan. As both Rick Smith and I
mentioned,  the current  Plan is under  review and it is our clear  intention to
modify  the Plan so that it more  easily  understood  and so that it  provides a
clear  identifiable  benefit.  It is our firm  belief that to include you in the
current  Plan would  complicate  our ability to migrate  you to a new Plan.  If,
however, for some reason we determine that applicable ERISA regulations preclude
us from replacing the existing Plan you will be enrolled in the current Plan.

In addition to the above we will provide you with the following:

o    Participation  for you and your eligible  dependents in all Bank  sponsored
     health, dental, disability and other insurance plans generally available to
     all employees of the Bank. Such  participation will be on the same basis as
     other employees except that the 90 day waiting period for inclusion will be
     waived.

o    Participation in existing  savings plans,  including but not limited to the
     Bank's 401(k) Savings Plan,  Employee Stock  Ownership  Plan, and Executive
     Deferred Compensation Plan.

o    Twenty (20) paid vacation days annually to be pro-rated based on hire date,
     and

o    A car  allowance  of  $1,000.00  per  month  and  reimbursement  for  other
     reasonable out of pocket expenses including $0.15 per mile, incurred in the
     performance of official Bank business.

I have enclosed a summary of our benefit plans for your review.  Should you have
any questions about any of the plans outlined in that document please contact me
at 530-898-0300.

Please indicate your official  acceptance of this offer by signing and returning
the offer  letter in the enclosed  envelope no later than 3 business  days after
receipt.  Alternatively you may fax a copy to me at 530-898-0308. We are excited
about  this  opportunity  and feel that you will be a valuable  addition  to the
growing Tri Counties Team!

If you have any  questions  regarding  the  terms of this  offer  please  do not
hesitate to contact either myself or Rick Smith.

Regards,

/s/ R.A. Miller
---------------

R.A. Miller
SVP, Director Human Resources
Tri Counties Bank

/s/ Dan Bailey                      4-26-07
--------------                      -------
Dan Bailey





EXHIBIT 99.1



       TRI COUNTIES BANK ANNOUNCES APPOINTMENT OF NEW EVP--RETAIL BANKING



PRESS RELEASE                                     Contact:  Thomas J. Reddish
FOR IMMEDIATE RELEASE                             Executive Vice President & CFO
                                                  (530) 898-0300


CHICO, Calif. - (May 2, 2007) -TriCo Bancshares (NASDAQ:  TCBK), today announced
that  Mr.  Daniel  K.  Bailey  has  been  appointed  as the new  Executive  Vice
President--Retail Banking of its wholly owned subsidiary, Tri Counties Bank (the
"Bank"),  effective  May  22,  2007.  Mr.  Bailey  will be  responsible  for the
oversight  of the Bank's  branch  network.  He will work with the Bank's  retail
management  team to review  overall  operations;  advise  on  policy  questions,
business development,  staffing requirements,  performance appraisals and salary
administration;  and perform  other  administrative  matters.  In addition,  Mr.
Bailey will serve as part of TriCo Bancshares'  executive management team in the
development of strategic planning.

Mr.  Bailey had been with Wells Fargo  Bank,  NA since  1991,  most  recently as
senior vice president and regional  initiatives manager in the Sacramento office
responsible for the small business and licensed  banking strategy for 120 retail
branches in  northern  California.  He received a bachelor of science  degree in
business  administration  from  California  State  University,  Chico,  and is a
graduate of the Pacific Coast Banking School.

"We are  excited to add Dan to our  executive  management  team,"  said  Richard
Smith,  President and Chief Executive  Officer,  of TriCo  Bancshares.  "With 17
years in the banking business,  Dan is a very experienced  banker with knowledge
of the northern California banking market."

TriCo Bancshares and Tri Counties Bank are  headquartered in Chico,  California.
Tri Counties Bank has a 31-year  history in the banking  industry.  Tri Counties
Bank operates 32 traditional  branch  locations and 22 in-store branch locations
in 22 California  counties,  and as of March 31, 2007,  had over $1.9 billion in
assets.  Tri Counties Bank offers financial  services and provides a diversified
line of products and services to consumers and businesses, which include demand,
savings and time deposits,  consumer finance, online banking,  mortgage lending,
and commercial  banking  throughout its market area. It operates a network of 62
ATMs  and a  24-hour,  seven  days a week  telephone  customer  service  center.
Brokerage  services are provided at the Bank's offices by the Bank's association
with Raymond James Financial,  Inc. For further information please visit the Tri
Counties Bank web-site at http://www.tricountiesbank.com.