SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 8-A

                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934




                             FIRST FINANCIAL BANCORP
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

      California                                                94-28222858
- ----------------------                                    ----------------------
State of Incorporation                                    IRS Employer ID Number

            First Financial Bancorp
       701 South Ham Lane, Lodi, California                       95242
- --------------------------------------------------             ------------
Address of registrant's principal executive office               Zip Code


Securities  Act  Registration  Statement  and file  number  to which  this  form
relates: ___ (if applicable)

        Securities to be registered pursuant to Section 12(b) of the Act:

        Title of each Class                Name of Each Exchange on Which
        to Be Registered                   Each class Is to be Registered
        ----------------                   ------------------------------
        None                               None
        ----                               ----


If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(b)  of  the  Exchange  Act  and is  effective  pursuant  to  General
Instruction A.(c), please check the following box.
[ ]

If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(g)  of  the  Exchange  Act  and is  effective  pursuant  to  General
Instruction A.(d), please check the following box.
[ ]

        Securities to be registered pursuant to Section 12(g) of the Act:

                         Preferred Share Purchase Rights
                         -------------------------------





                                (Title of Class)



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Item 1.  Description of Registrant's Securities to be Registered


                  On May 31,  2001 the  Board of  Directors  of First  Financial
Bancorp (the  "Company")  declared a dividend of one  preferred  share  purchase
right (a "Right") for each outstanding  share of common stock, no par value (the
"Common Shares"),  of the Company.  The dividend is payable on July 6, 2001 (the
"Record Date") to the  shareholders  of record on that date. Each Right entitles
the registered  holder to purchase from the Company one one-hundredth of a share
of Series A Junior  Participating  Preferred Stock, no par value (the "Preferred
Shares"),  of the  Company  at a price  of  $47.50  per one  one-hundredth  of a
Preferred Share (the "Purchase Price"),  subject to adjustment.  The description
and terms of the Rights are set forth in a Rights Agreement dated as of June 15,
2001 (the "Rights  Agreement")  between the Company and Mellon Investor Services
LLC, as Rights Agent (the "Rights Agent").

                  Initially,  the Rights will be evidenced  by the  certificates
representing  Common  Shares then  outstanding,  regardless  of whether any such
certificate  has a copy of this  Summary  of  Rights  attached  thereto,  and no
separate Right  Certificates will be distributed.  The Rights will separate from
the Common Shares and a Distribution  Date will occur upon the earlier of (i) 10
days  following a public  announcement  that a person or group of  affiliated or
associated  persons  have  acquired  beneficial  ownership of 10% or more of the
outstanding Common Shares (an "Acquiring Person");  provided,  however, a person
or group holding 10% or more of the outstanding  shares as of June 15, 2001 will
become a "Grandfathered Person" and such Grandfathered Person will be treated as
an Acquiring Person upon public announcement or knowledge by the Company's Board
of Directors that such Grandfathered Person has acquired beneficial ownership of
an additional 1% of the outstanding  Common Shares; or (ii) 10 business days (or
such later date as may be determined  by action of the Board of Directors  prior
to  such  time  as  any  Person  becomes  an  Acquiring  Person)  following  the
commencement  of, or  announcement  of an  intention  to make, a tender offer or
exchange  offer  the  consummation  of  which  would  result  in the  beneficial
ownership by a person or group of 10% or more of such outstanding  Common Shares
(unless the Company's Board of Directors has approved the offer).

                  The Rights  Agreement  provides that,  until the  Distribution
Date, the Rights will be transferred with and only with the Common Shares. Until
the Distribution Date (or earlier  redemption or expiration of the Rights),  new
Common Share  certificates  issued after the Record Date,  upon  transfer or new
issuance of Common  Shares,  will  contain a notation  incorporating  the Rights
Agreement by reference.  Until the Distribution  Date (or earlier  redemption or
expiration of the Rights),  the surrender for transfer of any  certificates  for
Common Shares outstanding as of the Record Date, even without such notation or a
copy of this Summary of Rights being attached thereto,  will also constitute the
transfer of the Rights  associated  with the Common Shares  represented  by such
certificate.  As soon as practicable  following the Distribution Date,  separate
certificates  evidencing  the Rights  ("Right  Certificates")  will be mailed to
holders  of record of the  Common  Shares  as of the  close of  business  on the
Distribution Date and such separate Right  Certificates  alone will evidence the
Rights.


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                  The Rights are not exercisable  until the  Distribution  Date.
The Rights will expire on May 31, 2011 (the "Final Expiration Date"), unless the
Rights  are  earlier  redeemed  or  exchanged  by the  Company,  in each case as
described below.

                  The Purchase Price payable, and the number of Preferred Shares
or other  securities  or  property  issuable,  upon  exercise  of the Rights are
subject to adjustment from time to time to prevent  dilution (i) in the event of
a stock dividend on, or a subdivision,  combination or reclassification  of, the
Preferred  Shares,  (ii) upon the grant to  holders of the  Preferred  Shares of
certain  rights or warrants to subscribe for or purchase  Preferred  Shares at a
price, or securities  convertible into Preferred Shares with a conversion price,
less than the then current  market price of the  Preferred  Shares or (iii) upon
the distribution to holders of the Preferred Shares of evidences of indebtedness
or assets  (excluding  regular  periodic cash  dividends paid out of earnings or
retained  earnings or dividends  payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

                  The  number  of  outstanding  Rights  and  the  number  of one
one-hundredths  of a Preferred  Share  issuable  upon exercise of each Right are
also subject to adjustment in the event of a stock split of the Common Shares or
a stock dividend on the Common Shares payable in Common Shares or a subdivision,
consolidation or combination of the Common Shares  occurring,  in any such case,
prior to the Distribution Date.

                  Preferred Shares  purchasable upon exercise of the Rights will
not  be  redeemable.  Each  Preferred  Share  will  be  entitled  to  a  minimum
preferential  dividend  payment of 100 times the  dividend  declared  per Common
Share. In the event of liquidation,  the holders of the Preferred Shares will be
entitled to a minimum preferential  liquidation payment of $100.00 per share but
will be  entitled  to an  aggregate  payment of 100 times the  payment  made per
Common Share. Each Preferred Share will have 100 votes, voting together with the
Common  Shares.  Finally,  in the event of any  merger,  consolidation  or other
transaction in which Common Shares are exchanged,  each Preferred  Share will be
entitled to receive 100 times the amount received per Common Share. These rights
are protected by customary antidilution provisions.

                  Because  of the  nature  of the  Preferred  Shares'  dividend,
liquidation and voting rights, the value of the one one-hundredth  interest in a
Preferred Share  purchasable upon exercise of each Right should  approximate the
value of one Common Share.

                  In the event  that (i) any  person or group of  affiliated  or
associated  persons  becomes an  Acquiring  Person,  or (ii) during such time as
there is an Acquiring Person, there shall be a reclassification of securities or
a  recapitalization  or  reorganization  of the Company or other  transaction or
series of transactions  involving the Company which has the effect of increasing
by more than 1% the proportionate  share of the outstanding  shares of any class
of equity  securities  of the  Company or any of its  subsidiaries  beneficially
owned by the Acquiring Person (each a "flip-in"  event),  proper provision shall
be made so that each holder of a Right, other than Rights  beneficially owned by
the Acquiring  Person (which will thereafter be void),  will thereafter have the
right to receive upon  exercise  that number of Common  Shares (or, in the event
that there are insufficient authorized Common Shares,  substitute  consideration
such as cash,  property,  or other securities of the Company,  such as Preferred
Stock)  having a market


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value of two times  the  exercise  price of the  Right.  In the  event  that the
Company is acquired in a merger or other business combination transaction or 50%
or more of its  consolidated  assets or  earning  power  are sold (a  "flip-over
event"),  proper  provision  will be made so that each  holder  of a Right  will
thereafter  have the right to  receive,  upon the  exercise  thereof at the then
current  exercise  price of the Right,  that number of shares of common stock of
the acquiring  company which at the time of such  transaction will have a market
value of two times the exercise price of the Right.

                  At any time  after  the  acquisition  by a person  or group of
affiliated or associated  persons of beneficial  ownership of 10% or more of the
outstanding  Common Shares and prior to the  acquisition by such person or group
of 50% or more of the outstanding  Common Shares,  the Board of Directors of the
Company may exchange the Rights (other than Rights owned by such person or group
which have become void), in whole or in part, at an exchange ratio of one Common
Share,  or one  one-hundredth  of a Preferred Share (or of a share of a class or
series of the Company's  preferred stock having equivalent  rights,  preferences
and privileges), per Right (subject to adjustment).

                  With certain  exceptions,  no adjustment in the Purchase Price
will be required until cumulative  adjustments require an adjustment of at least
1% in such Purchase Price. No fractional  Preferred Shares will be issued (other
than fractions which are integral  multiples of one one-hundredth of a Preferred
Share,  which may, at the  election of the Company,  be evidenced by  depository
receipts) and in lieu  thereof,  an adjustment in cash will be made based on the
market price of the  Preferred  Shares on the last trading day prior to the date
of exercise.

                  At any time before a person becomes an Acquiring  Person,  the
Board of  Directors  of the Company  may redeem the Rights in whole,  but not in
part,  at a price of  $0.001  per  Right  (the  "Redemption  Price").  After the
redemption  period  has  expired,  the  Company's  rights of  redemption  may be
reinstated  if, prior to  completion  of certain  recapitalizations,  mergers or
other  business  combinations,   an  Acquiring  Person  reduces  its  beneficial
ownership to less than 10% of the outstanding  Common Shares in a transaction or
series of transactions  not involving the Company.  The redemption of the rights
may be made  effective at such time,  on such basis and with such  conditions as
the Board of Directors in its sole  discretion may establish.  Immediately  upon
any  redemption of the Rights,  the right to exercise the Rights will  terminate
and the only right of the holders of Rights  will be to receive  the  Redemption
Price.

                  The  terms  of the  Rights  may be  amended  by the  Board  of
Directors  of the  Company  without  the  consent of the  holders of the Rights,
including an amendment to lower certain  thresholds  described above to not less
than the greater of (i) any  percentage  greater than the largest  percentage of
the outstanding Common Shares then known to the Company to be beneficially owned
by any person or group of affiliated or associated  persons  (unless such person
or group is excluded  from the effect of such  reduction)  and (ii) 10%,  except
that from and after such time as any person becomes an Acquiring  Person no such
amendment may adversely affect the interests of the holders of the Rights.


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                  Until a Right is exercised, the holder of a Right will not, by
reason of being such a holder,  have  rights as a  shareholder  of the  Company,
including, without limitation, the right to vote or to receive dividends.

                  A copy of the Rights Agreement is being filed as an Exhibit to
this  Registration  Statement  on Form 8-A.  A copy of the Rights  Agreement  is
available  free of charge from the  Company.  This  summary  description  of the
Rights does not  purport to be  complete  and is  qualified  in its  entirety by
reference to the Rights Agreement, which is incorporated by reference to Exhibit
4 to this Registration Statement.


Item 2.  Exhibits.


4.       Rights  Agreement  between  First  Financial  Bancorp  and U. S.  Stock
         Transfer Corporation dated as of June 15, 2001, including Form of Right
         Certificate attached thereto as Exhibit B.

99.      Press release issued by the Company on June 22, 2001.


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                                    Signature

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the registrant  has duly caused this  registration  statement to be
signed on its behalf by the undersigned, thereto duly authorized.

         Date:   June 27, 2001                First Financial Corporation


                                              By:      /s/ Allen R. Christenson
                                                    ---------------------------
                                                    Name:  Allen R. Christenson
                                                    Senior Vice President
                                                    Chief Financial Officer


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                                  Exhibit Index



No.      Description

4.       Rights  Agreement  between  First  Financial  Bancorp  and U. S.  Stock
         Transfer Corporation dated as of June 15, 2001, including Form of Right
         Certificate attached thereto as Exhibit B.

99.      Press release issued by the Company on June 22, 2001.


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