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):

                                  July 30, 2003

                                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


Item 5:  Other Events

     The Board of Directors of TriCo Bancshares (the "Company"),  parent company
of Tri Counties Bank, declared a quarterly cash dividend of $0.20 (twenty cents)
per share at its  meeting  held on July 29,  2003.  The  dividend  is payable on
September 30, 2003 to holders of record at the close of business on September 9,
2003 as indicated in the Company's  press release dated July 30, 2003, a copy of
which is attached as Exhibit 99.1.
     Effective July 31, 2003, the Company completed an offering of 20,000 shares
of cumulative  trust  preferred  securities  for cash in an aggregate  amount of
$20,000,000. Also effective July 31, 2003, the Company announced the termination
of its stock  repurchase  plan dated  October 19, 2001,  and adopted a new stock
repurchase  plan for the  repurchase  of up to 250,000  shares of the  Company's
common stock from time to time as market conditions allow. The issuance of trust
preferred  securities and the new stock repurchase plan are described in greater
detail in the  Company's  press  release dated July 31, 2003, a copy of which is
attached as Exhibit 99.2.
     On August 1, 2003, the Company reported that its nonperforming  assets, net
of government agency  guarantees,  decreased  $15,127,000 (68%) to $6,963,000 at
July 31, 2003  compared to  $22,090,000  at June 30, 2003,  primarily due to the
collection of two  nonperforming  real estate loans. The collection is described
in the Company's press release dated August 1, 2003, a copy of which is attached
as Exhibit 99.3.


Item 7(c): Exhibits

          99.1 Press release dated July 30, 2003
          99.2 Press release dated July 31, 2003
          99.3 Press release dated August 1, 2003



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, thereunto duly authorized.

                                   TRICO BANCSHARES

Date:  August 4, 2003         By:  /s/ Thomas J. Reddish
                                   --------------------------------------
                                   Thomas J. Reddish, Vice President and
                                   Chief Financial Officer (Principal
                                   Financial and Accounting Officer)


INDEX TO EXHIBITS

Exhibit No.                Description
- -----------                --------------------------------------------

   99.1                    Press release dated July 30, 2003
   99.2                    Press release dated July 31, 2003
   99.3                    Press release dated August 1, 2003





Exhibit 99.1


                    TRICO BANCSHARES QUARTERLY CASH DIVIDEND



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

     Chico,  CA - July 30,  2003.  The Board of  Directors  of TriCo  Bancshares
(NASDAQ:  TCBK),  parent company of Tri Counties Bank, declared a quarterly cash
dividend of $0.20 (twenty cents) per share at its meeting held on July 29, 2003.
The dividend is payable on September  30, 2003 to holders of record at the close
of business on September 9, 2003.
     Tri Counties Bank headquartered in Chico, California, has a 28 year history
in the banking  industry.  As of June 30, 2003, Tri Counties Bank has over $1.36
billion in assets,  and operates 33 traditional branch locations and 10 in-store
branch locations,  in 20 California counties. 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 53 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






Exhibit 99.2


PRESS RELEASE                                    Contact:  Thomas J. Reddish
                                                           Vice President & CFO
For Immediate Release                                      (530) 898-0300

              TRICO BANCSHARES ANNOUNCES CLOSING OF TRUST PREFERRED
                     OFFERING AND NEW STOCK REPURCHASE PLAN

     Chico, CA - July 31, 2003. TriCo Bancshares (NASDAQ:  TCBK), parent company
of Tri Counties Bank, today announced that the Company completed  effective July
31, 2003 an offering of 20,000 shares of cumulative  trust preferred  securities
for cash in an aggregate amount of $20,000,000.  The trust preferred  securities
are due in 30 years with an interest rate that resets  quarterly at  three-month
LIBOR plus 3.05%, or 4.16% for the first quarterly  interest  period.  The trust
preferred securities were issued through an underwriting  syndicate to which the
Company  paid  underwriting  fees of $7.50 per trust  preferred  security  or an
aggregate of $150,000.  The net proceeds of $19,850,000  will be used to finance
the opening of new branches,  improve bank services and  technology,  repurchase
shares  of the  Company's  common  stock as  described  below and  increase  the
Company's capital.
     The trust  preferred  securities  have not been and will not be  registered
under the Securities  Act of 1933, as amended,  or applicable  state  securities
laws  and were  sold  pursuant  to an  exemption  from  registration  under  the
Securities  Act of 1933.  The trust  preferred  securities may not be offered or
sold in the United States absent  registration  or an applicable  exemption from
the  registration  requirements  of the Securities Act of 1933, as amended,  and
applicable state securities laws.
     The Company formed a subsidiary  business trust,  TriCo Capital Trust I, to
issue the trust  preferred  securities.  Concurrently  with the  issuance of the
trust preferred  securities,  the trust issued 619 shares of common stock to the
Company for $1,000 per share or an  aggregate  of  $619,000.  In  addition,  the
Company  issued a Junior  Subordinated  Debenture  to the Trust in the amount of
$20,619,000.  The terms of the  Junior  Subordinated  Debenture  are  materially
consistent  with the terms of the  trust  preferred  securities  issued by TriCo
Capital Trust I.
     This  press  release  shall  not   constitute  an  offer  to  sell  or  the
solicitation  of an offer to buy the  trust  preferred  securities.  This  press
release is being issued  pursuant to and in accordance  with Rule 135c under the
Securities Act of 1933, as amended.
     Also today,  the Company  announced the termination of its stock repurchase
plan to  repurchase  150,000  shares of common  stock  originally  announced  on
October 19, 2001. There were 118,800 shares  repurchased  under the plan and the
remaining 31,200 shares had not been repurchased.  The Company has adopted a new
stock  repurchase  plan  for  the  repurchase  of up to  250,000  shares  of the
Company's common stock from time to time as market conditions allow. The 250,000
shares authorized for repurchase under this plan represent approximately 3.2% of
the Company's  approximately  7,852,000 common shares outstanding as of July 31,
2003. This new plan has no stated expiration date for the repurchases.
     TriCo  Bancshares  and  Tri  Counties  Bank  are  headquartered  in  Chico,
California. Tri Counties Bank has a 28 year history in the banking industry. Tri
Counties Bank operates 33 traditional  branch  locations and 10 in-store  branch
locations in 20 California counties. 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 54 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




Exhibit 99.3


PRESS RELEASE                                    Contact:  Thomas J. Reddish
                                                           Vice President & CFO
For Immediate Release                                      (530) 898-0300


     TRICO BANCSHARES REPORTS SUBSTANTIAL REDUCTION IN NONPERFORMING ASSETS

     Chico, CA - August 1, 2003. TriCo Bancshares (NASDAQ: TCBK), parent company
of Tri Counties  Bank,  today  reported that its  nonperforming  assets,  net of
government agency guarantees,  decreased $15,127,000 (68%) to $6,963,000 at July
31, 2003 compared to $22,090,000 at June 30, 2003. The decrease is mainly due to
the  collection of two  nonperforming  commercial  real estate loans to a single
entity collateralized by a single building.  The collection was realized on July
31, 2003 via the Company's  receipt of net proceeds of $11,474,000 from the sale
of the  building.  The  collection  resulted  in a recovery  of  $346,000 of the
$1,900,000  charged-off  on these loans during the quarter  ended June 30, 2003.
The recovery  will be reflected in the Company's  results of operations  for the
quarter ended September 30, 2003.
     In addition to the  historical  information  contained  herein,  this press
release contains certain  forward-looking  statements.  The reader of this press
release should understand that all such  forward-looking  statements are subject
to  various  uncertainties  and risks  that  could  affect  their  outcome.  The
Company's  actual results could differ  materially  from those suggested by such
forward-looking  statements.  Factors  that could  cause or  contribute  to such
differences  include,  but are not limited to,  variances  in the actual  versus
projected  growth in assets,  return on assets,  loan  losses,  expenses,  rates
charged on loans and earned on securities  investments,  rates paid on deposits,
competition  effects,  fee and other noninterest  income earned as well as other
factors.  This entire press release  should be read to put such  forward-looking
statements  in  context  and  to  gain  a  more  complete  understanding  of the
uncertainties and risks involved in the Company's business.
     TriCo  Bancshares  and  Tri  Counties  Bank  are  headquartered  in  Chico,
California. Tri Counties Bank has a 28 year history in the banking industry. Tri
Counties Bank operates 33 traditional  branch  locations and 10 in-store  branch
locations in 20 California counties. 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 54 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