Pricing Supplement No. 4                        Filed Pursuant to Rule 424(b)(3)
dated February 12, 2003               Registration Nos. 333-89202, 333-89202-01,
(To Prospectus dated                               333-89202-02 and 333-89202-03
August 9, 2002 and
Prospectus Supplement dated
September 10, 2002)



                              ZIONS BANCORPORATION
                       Senior Medium-Term Notes, Series A
                                   -----------

         This Pricing Supplement accompanies and supplements the Prospectus
dated August 9, 2002 as supplemented by the Prospectus Supplement dated
September 10, 2002. The notes have the terms set forth below and elsewhere in
this Pricing Supplement.


Principal Amount: Up to $50,000,000. See       Initial Settlement
                  "Other Provisions" below.    Date: February 18, 2003

Interest Rate: Three-month LIBOR               Issue Price:  99.90%
               plus 50 basis points.

Underwriting Discount:  0.10%                  Net Proceeds to Zions:  99.80%


Agent acting in the capacity as:  [ ]  Agent   [X]  Principal
      If as Principal:

         [ ] The Notes are being offered at varying  prices related to
             prevailing market prices at the time of resale.

         [X] The Notes are being offered at a fixed initial public offering
             price of 99.90% of principal amount plus accrued interest
             from January 15, 2003.

      If as Agent: the Notes are being offered at a fixed initial public
      offering price of ___% of Principal Amount.

Other Provisions:

         Zions Bancorporation intends to apply to list the notes on the New York
Stock Exchange and, assuming the notes are approved for listing by the New York
Stock Exchange, expects trading in the notes to begin within 30 days after the
Settlement Date.

     The notes that Zions  Bancorporation is offering by this pricing supplement
are a further  issuance of, are  fungible  with and are  consolidated  to form a
single series with our Senior Floating Rate Notes Due January 14, 2005 issued on
January 15, 2003. The aggregate  principal amount of this series of notes may be
up to $50,000,000.  Currently,  $45,000,000  aggregate principal amount of those
notes are outstanding. Zions Investment Securities, Inc. will use its reasonable
best efforts to solicit  purchases of the notes.  However,  we cannot assure you
that we will  issue  the  entire  $50,000,000  and we may  issue  less than that
amount.  Zions  Bancorporation may from time to time, without the consent of the
existing  holders of the notes,  create and issue  further notes having the same
terms and conditions as the notes being offered  hereby in all respects,  except
for issue  date,  issue  price  and,  if  applicable,  the first  payment of the
interest  thereon.  Additional  notes issued in this manner will be consolidated
with,  and will form a single series with,  the  previously  outstanding  notes.

                                  -----------

         THESE NOTES WILL NOT BE SAVINGS ACCOUNTS, DEPOSITS OR OTHER OBLIGATIONS
OF ANY BANK OR NON-BANK SUBSIDIARY OF OURS AND ARE NOT INSURED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY.

         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY
BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY
OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.

         Zions Bancorporation may use this pricing supplement in the initial
sale of any note. In addition, Zions Investment Securities, Inc. or any other
affiliate of Zions Bancorporation may use this pricing supplement in a
market-making transaction in any note after its initial sale. UNLESS ZIONS
BANCORPORATION OR ITS AGENT INFORMS THE PURCHASER OTHERWISE IN THE CONFIRMATION
OF SALE, THIS PRICING SUPPLEMENT IS BEING USED IN A MARKET-MAKING TRANSACTION.


                        ZIONS INVESTMENT SECURITIES, INC.
                                   -----------


Stated Maturity: January 14, 2005

Interest Payment Dates: January 15, April 15, July 15 and October 15, commencing
        April 15, 2003, except the last Interest Payment Date which will be
        the aforementioned Maturity Date

Interest Rate Basis:

   [ ]  CD Rate:                           [ ]  EURIBOR
   [ ]  Prime Rate:                        [ ]  Treasury Rate
   [ ]  Commercial Paper Rate:             [ ]  Federal Funds Rate
   [ ]  LIBOR:  (Reuters Page____)         [ ]  Other:___________
   [X]  LIBOR (Telerate Page 3750)

Index Currency:  U.S. Dollars               Index Maturity:  3 months

Initial Interest Rate: 1.87563%

Maximum/Minimum Interest Rate:  None

Interest Reset Period and Dates:  Quarterly; January 15, April 15, July 15 and
                                  October 15

Spread (+/-):  +.50                         Spread Multiplier: None

Rate of interest on any overdue principal, premium and/or interest: applicable
quarterly Interest Rate

Redemption:
   [ ] The Notes cannot be redeemed prior to the Stated Maturity.
   [X] The Notes may be redeemed prior to the Stated Maturity.
          Redemption  Commencement  Date:  January  15,  2004;  the notes may be
          redeemed in whole,  and not in part,  on the  Redemption  Commencement
          Date and on each  Interest  Reset Date  subsequent  to the  Redemption
          Commencement  Date.  If Zions  Bancorporation  exercises  an option to
          redeem any of the notes, Zions Bancorporation will give to the trustee
          and the holder written  notice of the principal  amount of notes to be
          redeemed,  not less than 10  business  days nor more than 60  calendar
          days before the applicable redemption date.
          Redemption Price: 100%

Optional Repayment:
   [X] The Notes cannot be repaid prior to the Stated Maturity.
   [ ] The Notes can be repaid prior to the Stated Maturity at the option of the
       holder of the Notes.

Authorized Denomination:
   [X] $1,000 and integral multiples of $1,000 in excess thereof
   [ ] Other:

Original Issue Discount:       [ ]  Yes   [X]  No
      Total Amount of OID: N/A
      Yield to Maturity: N/A
      Initial Accrual Period: N/A

Defeasance:
      Full Defeasance:         [ ]  Yes   [X] No
      Covenant Defeasance:     [ ]  Yes   [X] No

Sinking Fund: [ ] Yes   [X] No

Form:  [X] Book-Entry   [ ] Certificated