<PAGE>   1








                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q

(Mark One)

    X    Quarterly Report Pursuant to Section 13 or 15(d) of The Securities
    --   Exchange Act of 1934.

             For the quarterly period ended September 30, 2000

    --   Transition report pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934.


                         Commission file number 0-11428


                           INFORMATION RESOURCES, INC.
                           ---------------------------
             (Exact name of registrant as specified in its charter)

                     Delaware                              36-2947987
                     --------                              ----------
           (State or other jurisdiction of              (I.R.S. Employer
          incorporation or organization)               Identification No.)

                150 North Clinton Street, Chicago, Illinois 60661
               ---------------------------------------------------
               (Address of principal executive offices) (Zip Code)

        Registrant's telephone number, including area code (312) 726-1221
                                                           --------------








Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes X   No
                                      ---    ---

The number of shares of the registrant's  common stock, $.01 par value per share
outstanding, as of October 31, 2000 was 28,974,773.


<PAGE>   2



                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES

                                     INDEX

<TABLE>
<CAPTION>
                                                                                                           PAGE
                                                                                                          NUMBER
                                                                                                          ------

<S>                                                                                                       <C>
    PART I.      FINANCIAL INFORMATION

    Condensed Consolidated Balance Sheets                                                                     3

    Condensed Consolidated Statements of Operations                                                           4

    Condensed Consolidated Statements of Cash Flows                                                           5

    Notes to Condensed Consolidated Financial Statements                                                      6

    Management's Discussion and Analysis of
        Financial Condition and Results of Operations                                                        14





    PART II.     OTHER INFORMATION

    Item 6 -- Exhibits and Reports Form 8-K                                                                   22

    Signatures                                                                                               23
</TABLE>




                                       2
<PAGE>   3


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                        (IN THOUSANDS, EXCEPT SHARE DATA)


<TABLE>
<CAPTION>
ASSETS                                                                        SEPTEMBER 30, 2000        DECEMBER 31, 1999
------                                                                        ------------------        -----------------
                                                                                 (UNAUDITED)
<S>                                                                             <C>                     <C>
CURRENT ASSETS
     Cash and cash equivalents .................................................   $  12,937                $   8,077
     Accounts receivable, net ..................................................      78,495                   94,125
     Prepaid expenses and other ................................................       8,920                    8,569
                                                                                   ---------                ---------
          Total Current Assets .................................................     100,352                  110,771
                                                                                   ---------                ---------

Property and equipment, at cost ................................................     218,261                  204,535
Accumulated depreciation .......................................................    (143,713)                (123,550)
                                                                                   ---------                ---------
Net property and equipment .....................................................      74,548                   80,985

Investments ....................................................................      16,366                    9,624

Other assets ...................................................................     164,844                  167,100
                                                                                   ---------                ---------

                                                                                   $ 356,110                $ 368,480
                                                                                   =========                =========


LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
     Current maturities of capitalized leases ..................................   $   1,902                $      55
     Accounts payable ..........................................................      42,398                   49,616
     Accrued compensation and benefits .........................................      13,802                   23,838
     Accrued property, payroll and other taxes .................................       2,810                    4,813
     Accrued expenses ..........................................................      13,393                   11,475
     Accrued restructuring costs ...............................................       6,088                    8,885
     Deferred revenue ..........................................................      27,043                   23,163
                                                                                   ---------                ---------
          Total Current Liabilities ............................................     107,436                  121,845
                                                                                   ---------                ---------

Long-term debt .................................................................      28,291                   10,764
Deferred income taxes, net .....................................................          --                    2,269
Other liabilities ..............................................................       7,556                    8,627

STOCKHOLDERS' EQUITY
     Preferred stock -- authorized, 1,000,000 shares,
          $.01 par value; none issued ..........................................          --                       --
     Common stock -- authorized 60,000,000 shares,
          $.01 par value, 28,974,773 and
          29,068,657 shares issued and outstanding, respectively ...............         291                      291
     Additional paid-in capital ................................................     198,703                  198,863
     Retained earnings .........................................................      26,251                   31,390
     Accumulated other comprehensive loss ......................................     (12,418)                  (5,569)
                                                                                   ---------                ---------
          Total Stockholders' Equity ...........................................     212,827                  224,975
                                                                                   ---------                ---------
                                                                                   $ 356,110                $ 368,480
                                                                                   =========                =========
</TABLE>


        The accompanying notes are an integral part of these statements.


                                       3
<PAGE>   4


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)



<TABLE>
<CAPTION>
                                                                          THREE MONTHS ENDED        NINE MONTHS ENDED
                                                                          ------------------        -----------------
                                                                             SEPTEMBER 30,             SEPTEMBER 30,
                                                                             -------------             -------------

                                                                            2000          1999       2000          1999
                                                                            ----          ----       ----          ----

<S>                                                                      <C>          <C>          <C>          <C>
Information services revenues ........................................   $ 131,672    $ 136,092    $ 394,744    $ 405,684
Costs and expenses:
   Information services sold .........................................    (114,581)    (121,322)    (353,403)    (366,371)
   Selling, general and administrative expenses ......................     (13,052)     (12,849)     (40,294)     (38,772)
   Restructuring and other charges ...................................      (3,157)          --       (8,796)          --
                                                                         ---------    ---------    ---------    ---------
                                                                          (130,790)    (134,171)    (402,493)    (405,143)
                                                                         ---------    ---------    ---------    ---------

Operating profit (loss) ..............................................         882        1,921       (7,749)         541

Equity in earnings (loss) of affiliated companies ....................        (583)          84         (313)         180

Minority interest benefit ............................................         487        1,170        2,336        3,455

Interest expense and other, net ......................................      (1,282)        (501)      (2,793)      (1,091)
                                                                         ---------    ---------    ---------    ---------

Earnings (loss) before income taxes ..................................        (496)       2,674       (8,519)       3,085

Income tax (expense) benefit .........................................        (102)      (1,346)       3,380       (1,540)
                                                                         ---------    ---------    ---------    ---------

Net earnings (loss) ..................................................   $    (598)   $   1,328    $  (5,139)   $   1,545
                                                                         =========    =========    =========    =========


Net earnings (loss) per common share -- basic ........................   $    (.02)   $     .05    $    (.18)   $     .06
                                                                         =========    =========    =========    =========

Net earnings (loss) per common and
    common equivalent share -- diluted ...............................   $    (.02)   $     .05    $    (.18)   $     .06
                                                                         =========    =========    =========    =========

Weighted average common shares -- basic ..............................      29,046       28,120       29,061       28,022
                                                                         =========    =========    =========    =========

Weighted average common and
    common equivalent shares -- diluted ..............................      29,046       28,267       29,061       28,081
                                                                         =========    =========    =========    =========
</TABLE>


        The accompanying notes are an integral part of these statements.


                                       4
<PAGE>   5


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
                                 (IN THOUSANDS)



<TABLE>
<CAPTION>
                                                                                        NINE MONTHS ENDED
                                                                                        -----------------
                                                                                          SEPTEMBER 30,
                                                                                          -------------

                                                                                        2000          1999
                                                                                        ----          ----

<S>                                                                                  <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings (loss) ..............................................................   $  (5,139)   $   1,545
Adjustments to reconcile net earnings (loss) to net cash provided by
   operating activities:
     Amortization of deferred data procurement costs .............................      89,996       89,655
     Depreciation ................................................................      22,224       19,985
     Amortization of capitalized software costs and intangibles ..................       4,508        5,086
     Restructuring and other charges, net of cash payments .......................      (1,912)          --
     Deferred income tax (benefit) expense .......................................      (3,380)       1,540
     Equity in earnings of affiliated companies and minority interests ...........      (2,023)      (3,635)
     Other .......................................................................         225       (1,187)
     Change in assets and liabilities:
       Accounts receivable .......................................................      15,957        1,146
       Other current assets ......................................................        (351)      (1,179)
       Accounts payable and accrued liabilities ..................................     (18,186)         937
       Deferred revenue ..........................................................       3,880       11,452
       Other, net ................................................................      (4,761)       4,095
                                                                                     ---------    ---------

             Net cash provided by operating activities ...........................     101,038      129,440
                                                                                     ---------    ---------

CASH FLOWS FROM INVESTING ACTIVITIES:
Deferred data procurement costs ..................................................     (92,867)     (98,098)
Purchase of property, equipment and software .....................................     (13,259)     (24,569)
Investment in joint venture ......................................................      (1,940)          --
Capitalized software costs .......................................................      (1,490)      (5,457)
Other, net .......................................................................         994        3,414
                                                                                     ---------    ---------
             Net cash used in investing activities ...............................    (108,562)    (124,710)
                                                                                     ---------    ---------

CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (repayments) ......................................................      13,790       (1,588)
Purchases of Common Stock ........................................................        (675)      (1,036)
Proceeds from exercise of stock options and other ................................          --          871
                                                                                     ---------    ---------
             Net cash provided by (used in) financing activities .................      13,115       (1,753)
                                                                                     ---------    ---------


EFFECT OF EXCHANGE RATE CHANGES ON CASH ..........................................        (731)        (771)
                                                                                     ---------    ---------

             Net increase in cash and cash equivalents ...........................       4,860        2,206

  Cash and cash equivalents at beginning of period ...............................       8,077       11,149
                                                                                     ---------    ---------

  Cash and cash equivalents at end of period .....................................   $  12,937    $  13,355
                                                                                     =========    =========
</TABLE>


        The accompanying notes are an integral part of these statements.


                                       5
<PAGE>   6


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


     NOTE 1 -- BASIS OF PRESENTATION

              Principles of consolidation: The condensed consolidated financial
     statements include the accounts of Information Resources, Inc. and all
     wholly or majority owned subsidiaries and affiliates (collectively "the
     Company"). Minority interests reflect the non-Company owned stockholder
     interests in international operations. The equity method of accounting is
     used for investments in which the Company has a 20% to 50% ownership
     interest because it exercises significant influence over operating and
     financial policies. All significant intercompany accounts and transactions
     have been eliminated in consolidation.

              Interim financial statements: The interim financial statements are
     unaudited, but include all adjustments (consisting of normal recurring
     adjustments) necessary, in the opinion of management, for a fair statement
     of financial position and results of operations for the period presented.
     The preparation of interim financial statements necessarily relies on
     estimates, requiring the use of caution in estimating results for the full
     year based on interim results of operations.

              Reclassifications: Certain amounts in the 1999 condensed
     consolidated financial statements have been reclassified to conform to the
     2000 presentation.

              Earnings (Loss) per Common and Common Equivalent Share: Net
     earnings (loss) per share is based upon the weighted average number of
     shares of common stock outstanding during each period. Net earnings (loss)
     per common and common equivalent share-diluted is based upon the weighted
     average number of shares of common stock and common stock equivalents,
     entirely comprised of stock options, outstanding during each period. In
     2000, common stock equivalents were excluded from the weighted average
     shares outstanding calculation because they were anti-dilutive.

     NOTE 2 -- SUPPLEMENTAL CASH FLOW INFORMATION

              Cash paid (received) for interest and income taxes during the
     period was as follows (in thousands):

<TABLE>
<CAPTION>
                                                    NINE MONTHS ENDED
                                                    -----------------
                                                      SEPTEMBER 30,
                                                      -------------
                                                  2000             1999
                                                  ----             ----

<S>                                             <C>                <C>
       Interest                                 $2,529             $770
       Income taxes                               (277)             130
</TABLE>

              Non-cash investing and financing activities are excluded from the
     consolidated statement of cash flows. During the nine months ended
     September 30, 2000, the Company acquired mainframe computer equipment in
     exchange for a capital lease obligation recorded at $5.6 million. The
     Company repaid a portion of the capital lease obligation during the second
     and third quarters of 2000.



                                       6
<PAGE>   7

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


     NOTE 3 -- ACCOUNTS RECEIVABLE

     Accounts receivable were as follows (in thousands):

<TABLE>
<CAPTION>
                                                                         SEPTEMBER 30, 2000            DECEMBER 31, 1999
                                                                         ------------------            -----------------

<S>                                                                      <C>                           <C>
      Billed                                                                     $60,514                      $73,605
      Unbilled                                                                    21,293                       24,294
                                                                                  ------                       ------
                                                                                  81,807                       97,899
      Reserve for accounts receivable                                             (3,312)                      (3,774)
                                                                                 -------                      -------

                                                                                 $78,495                      $94,125
                                                                                 =======                      =======
</TABLE>



    NOTE 4 -- OTHER ASSETS

    Other assets were as follows (in thousands):



<TABLE>
<CAPTION>
                                                                           SEPTEMBER 30, 2000     DECEMBER 31, 1999
                                                                           ------------------     -----------------

<S>                                                                        <C>                    <C>
     Deferred data procurement costs --
          net of accumulated amortization of
          $138,189 in 2000 and $141,531 in 1999                                 $137,864                $140,285

     Intangible assets, including goodwill --
          net of accumulated amortization of
          $11,390 in 2000 and $15,050 in 1999                                      9,688                  11,659

     Capitalized software costs -- net of
          accumulated amortization of $5,756
          in 2000 and $3,149 in 1999                                               6,682                   7,799

     Other                                                                        10,610                   7,357
                                                                                --------                --------

                                                                                $164,844                $167,100
                                                                                ========                ========
</TABLE>




                                       7
<PAGE>   8

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


      NOTE 5 -- LONG TERM DEBT

               Long-term debt was as follows (in thousands):

<TABLE>
<CAPTION>
                                                                         SEPTEMBER 30, 2000              DECEMBER 31, 1999
                                                                         ------------------              -----------------

<S>                                                                      <C>                             <C>
      Bank borrowings                                                         $24,750                         $10,000
      Capitalized leases and other                                              5,443                             819
                                                                              -------                         -------
                                                                               30,193                          10,819
      Less current maturities                                                  (1,902)                            (55)
                                                                              -------                         -------

                                                                              $28,291                         $10,764
                                                                              =======                         =======
</TABLE>


              The financial covenants in the bank credit agreement, as well as
     in the lease agreement for the Company's Chicago headquarters, require the
     Company to maintain a minimum tangible net worth and to meet certain cash
     flow coverage and leverage ratios. The agreements also limit the Company's
     ability to declare dividends or make distributions to holders of capital
     stock, or redeem or otherwise acquire shares of the Company. Approximately
     $4.6 million is currently available for such distributions under the most
     restrictive of these covenants. The bank credit agreement contains
     covenants that restrict the Company's ability to incur additional
     indebtedness.


     NOTE 6 -- COMPREHENSIVE INCOME (LOSS)

              The comprehensive income (loss) summary shown below sets forth
     certain items that affect stockholders' equity but are excluded from the
     presentation of net earnings. The components of comprehensive income (loss)
     were as follows (in thousands):

<TABLE>
<CAPTION>
                                                              THREE MONTHS ENDED                   NINE MONTHS ENDED
                                                                 SEPTEMBER 30,                       SEPTEMBER 30,
                                                              ------------------                   -----------------
                                                                2000        1999                   2000       1999
                                                                ----        ----                   ----       ----


<S>                                                           <C>          <C>                  <C>         <C>
       Net earnings (loss)                                    $  (598)     $1,328               $ (5,139)   $ 1,545
       Foreign currency translation
          adjustment                                           (3,062)      2,105                 (6,849)    (2,080)
                                                              -------       -----               --------    -------

       Comprehensive income (loss)                            $(3,660)     $3,433               $(11,988)   $  (535)
                                                              =======      ======               ========    =======
</TABLE>




                                       8
<PAGE>   9

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


     NOTE 7 -- STOCK REPURCHASE

              During the third quarter of 2000, the Company began acquiring
     shares of its common stock in connection with a stock repurchase program
     announced in August 2000. The program, approved by the Company's Board of
     Directors, authorizes the periodic repurchase of up to 1,000,000 shares of
     its common stock on the open market, or in privately negotiated
     transactions, depending upon market conditions and other factors. The
     Company purchased 102,200 shares of common stock aggregating $.7 million
     during the third quarter of 2000. The shares are currently being held in
     treasury and will be sold to employees in connection with the Company's
     Employee Stock Purchase Plan.



     NOTE 8 -- JOINT VENTURE

              During the third quarter of 2000, the Company and Mosaic Group
     Inc. organized a joint venture company, Mosaic InfoForce, L.P. (MIF), in
     which the Company currently has a 49% ownership interest and Mosaic Group
     Inc. owns the remainder. The Company's domestic data collection, audit and
     merchandising business will be operated by MIF. The Company's investment of
     $1.9 million in MIF is being accounted for using the equity method of
     accounting.

     NOTE 9 -- SEGMENT INFORMATION

              The Company's business information services are conducted almost
     exclusively in the United States and Europe. The Company's operations in
     other markets account for approximately 1% of consolidated revenues. The
     executive management of the Company considers revenues from third parties
     and the aggregation of operating profit (loss), equity earnings (losses)
     and minority interests, ("Operating Results"), on a geographic basis to be
     the most meaningful measure of the operating performance of each respective
     geographic segment and of the Company as a whole.



                                       9

<PAGE>   10


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


              The following table presents certain information regarding the
     operations of the Company by geographic segments (in thousands):


<TABLE>
<CAPTION>
                                                                          THREE MONTHS ENDED              NINE MONTHS ENDED
                                                                             SEPTEMBER 30,                  SEPTEMBER 30,
                                                                          ------------------              -----------------

                                                                             2000         1999             2000            1999
                                                                             ----         ----             ----            ----
<S>                                                                        <C>          <C>              <C>             <C>
Revenues:
   U.S. Services                                                           $98,589      $103,627         $298,369        $311,580
   International Services                                                   33,083        32,465           96,375          94,104
                                                                          --------      --------         --------        --------


        Total Revenue                                                     $131,672      $136,092         $394,744        $405,684
                                                                          ========      ========         ========        ========


Operating Results:
   U.S. Services                                                            $6,020        $8,536         $ 14,580        $ 20,779
   International Services
        Operating Loss                                                      (1,320)       (3,350)          (6,278)        (12,561)
        Equity in earnings of affiliated companies                             157            84              427             180
        Minority interest benefit International Services                       487         1,170            2,336           3,455
                                                                          --------      --------         --------        --------
                                                                              (676)       (2,096)          (3,515)         (8,926)

   Corporate and other expenses                                               (661)       (3,265)          (7,255)         (7,677)
   Equity in losses of affiliated companies                                   (740)            -             (740)              -
   Restructuring and other charges (a)                                      (3,157)            -           (8,796)              -
                                                                          --------      --------         --------        --------


        Operating Results                                                      786         3,175           (5,726)          4,176

 Interest expense and other, net                                            (1,282)         (501)          (2,793)         (1,091)
                                                                          --------      --------         --------        --------

        Earnings (loss) before income taxes                               $   (496)     $  2,674         $ (8,519)       $  3,085
                                                                          ========      ========         ========        ========
</TABLE>



     (a) Restructuring and other charges for the U.S. Services, International
     and Corporate were $1.2 million, $2.0 million and $0 million, respectively,
     for the three months ended September 30, 2000 and $5.4 million, $4.3
     million and $(0.9) million, respectively, for the nine months ended
     September 30, 2000.


                                       10
<PAGE>   11


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)

     NOTE 10 -- RESTRUCTURING AND OTHER CHARGES

     RESTRUCTURING

              In the third quarter of 1999, the Company initiated a
     comprehensive cost reduction program named Project Delta. The first phase
     of Project Delta included the identification and assessment of potential
     operating efficiencies in the Company's various U.S. functional areas and
     was completed in the fourth quarter of 1999. The cost reduction program
     implementation began in the first quarter of 2000, with cost savings of
     approximately $11.0 million to $13.0 million achieved year to date.

              Certain restructuring costs were not eligible for accrual in 1999
     and were recorded in the first three quarters of 2000. For the quarter and
     year to date September 30, 2000, the restructuring charges included in
     Restructuring and Other Charges in the Statement of Operations consist of
     the following (in thousands):



<TABLE>
<CAPTION>
                                                                         THREE MONTHS               NINE MONTHS
                                                                             ENDED                     ENDED
                                                                      SEPTEMBER 30, 2000         SEPTEMBER 30, 2000
                                                                      ------------------         ------------------

<S>                                                                   <C>                        <C>
     Termination benefits                                                   $  730                     $3,406
     Discontinued activities                                                 1,603                      1,603
     Disposition of excess office space                                       (231)                       519
     Transition of German Production to
        U.S. facility                                                          980                      3,179
     Other costs of project                                                     75                        997
                                                                            ------                     ------
                                                                            $3,157                     $9,704
                                                                            ------                     ------
</TABLE>

              A restructuring accrual was established in the fourth quarter of
     1999 to reflect the outstanding obligations related to the fourth quarter
     1999 restructuring charges. The following table reflects the additional
     restructuring charges incurred in the first three quarters of 2000 and all
     cash payments made to date (in thousands):



                                       11

<PAGE>   12


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                              2000 ACTIVITY
                                                                    -------------------------------------
                                                 LIABILITY AT                                               LIABILITY AT
                                              DECEMBER 31, 1999        PROVISION            CASH         SEPTEMBER 30, 2000
                                              -----------------        ---------            ----         ------------------


<S>                                           <C>                      <C>                <C>            <C>
     Termination benefits                           $8,391               $3,406           $ (7,035)              $4,762

     Discontinued activities                            --                  928                 --                  928

     Disposition of excess office space                494                 (114)              (371)                   9

     Transition of German production to
     U.S. facility                                      --                3,179             (2,790)                 389

     Other costs of project                             --                  997               (997)                  --
                                                    ------               ------           --------               ------

                                                     8,885                8,396            (11,193)               6,088

     Non-cash provision                                 --                1,308                 --                   --
                                                    ------               ------           --------               ------
                                                    $8,885               $9,704           $(11,193)              $6,088
                                                    ======               ======           ========               ======
</TABLE>

              Termination Benefits: In the fourth quarter of 1999, the Company
     expected to terminate 325 full-time positions during 2000 impacting
     virtually all areas of the U.S. business, including operations, client
     services, technology and marketing, as well as Corporate headquarters. As
     of September 30, 2000, $7.0 million of accrued termination benefits have
     been disbursed and through October 31, 2000, 253 employees have been
     terminated under various Project Delta initiatives. Additional provisions
     have been made throughout the year to cover retention and relocation
     incentive costs that were not eligible for accrual at December 31, 1999.

              Discontinued Activities: During the third quarter of 2000, the
     Company ceased operations of entities in Japan (IRI Apollo K.K.) and
     Australia (Information Resources Australia Pty, Ltd.) which were
     responsible for distributing Apollo software. The Company has entered into
     agreements with its 40% owned affiliate, Information Resources Japan Ltd.
     and an unrelated company in Australia to distribute its Apollo software. In
     connection with the cessation of local operations, the Company reserved $.3
     million and $.6 million, respectively, relating to the Japan and Australia
     businesses.

              During the third quarter of 2000, it was determined that certain
     equipment used by the Company's field staff to collect retail information
     will no longer be utilized after the second quarter of 2001. Accordingly,
     the Company recognized a non-cash charge of $1.1 million in the third
     quarter of 2000 relating to accelerated depreciation on this equipment.

              Disposition of Excess Office Space: As a result of planned
     headcount reductions and space not currently utilized, the Company has
     decided to vacate certain facilities. The Company recorded $.6 million of
     charges relating to accelerated depreciation on leasehold improvements and
     furniture and fixtures and $(.1) million in lease buyouts associated with
     these facilities in the first nine months of 2000.


                                       12
<PAGE>   13



                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
          NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONT'D.
                                   (UNAUDITED)


              Transition of German Production to U.S. Facility: The Company made
     a decision in the fourth quarter of 1999 to transfer production services
     for IRI/GfK Retail Services GmbH from an external vendor in Germany to the
     Company's U.S. headquarter facility in order to enhance its InfoScan
     offering in Germany and to reduce future production costs. As of September
     30, 2000, charges of approximately $3.2 million were recorded related to
     this transition.

              Other Restructuring Costs: Other restructuring costs relate
     primarily to the final fees paid to the Boston Consulting Group for
     assistance in the identification and execution of the Project Delta
     objectives.

     OTHER CHARGES

              In the fourth quarter of 1999, Restructuring and Other Charges
     included a $0.9 million charge for a non-current receivables reserve. This
     reserve was reversed in the second quarter of 2000 pursuant to a settlement
     agreement reached with the other party.


                                       13
<PAGE>   14

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS


              The following narrative discusses the results of operations,
     liquidity and capital resources for the Company on a consolidated basis.
     This section should be read in conjunction with IRI's Annual Report on Form
     10-K for the fiscal year ended December 31, 1999. See "Management's
     Discussion and Analysis of Financial Condition and Results of Operations"
     contained therein.

     RESULTS OF OPERATIONS

              The Company's consolidated net loss was $.6 million or $.02 per
     diluted share for the third quarter of 2000 compared to consolidated net
     income of $1.3 million or $0.05 per diluted share for the corresponding
     1999 quarter. The Company's consolidated net loss was $5.1 million or $.18
     per diluted share for the nine months ended September 30, 2000 compared to
     consolidated net income of $1.5 million or $0.06 per diluted share for the
     corresponding 1999 period. Excluding restructuring and other charges, net
     income for the quarter was $1.3 million or $.05 per diluted share and year
     to date 2000 net income was $.1 million.

     Third Quarter Versus Prior Year

              Consolidated revenues for the quarter ended September 30, 2000
     were $131.7 million, a decrease of 3.2% over the corresponding quarter in
     1999. U.S revenues were $98.6 million, a decrease of 4.9% compared to the
     prior year due to the impact of client losses experienced in 1999, delays
     in the delivery of client projects that have since been corrected with a
     capacity upgrade and client consolidation activity. International revenues
     increased 1.9% to $33.1 million. Excluding foreign exchange effects,
     European revenues for the third quarter, which comprise 98% of total
     international revenues, increased 20.0% over the prior year reflecting
     continued strong revenue growth in most of the European businesses.

              Consolidated costs of information services sold decreased 5.6% to
     $114.6 million for the three months ended September 30, 2000 compared to
     costs of $121.3 million for the third quarter of 1999. The decline in
     expenses resulted from the Company's cost reduction initiative, Project
     Delta, lower U.S. revenues, adjustments during the third quarter of 2000 to
     personnel expense accruals and the continued strengthening of the U.S.
     dollar against European currencies. These savings were offset slightly by
     increased costs related to the investment in the Company's CPGNetwork
     internet-based delivery service and other strategic opportunities.

              Consolidated selling, general and administrative expenses
     increased 1.6% to $13.1 million for the three months ended September 30,
     2000 compared to $12.8 million for the third quarter of 1999.



                                       14



<PAGE>   15

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.

              Earnings before interest and taxes, excluding restructuring and
     other charges of $3.2 million, was $3.9 million for the third quarter of
     2000 compared to $3.2 million in the prior year. Improvements in the
     performance of the international operations and reduced U.S. expenses
     offset the decline in U.S. revenues.

              Restructuring and other charges are discussed below. Equity in
     earnings (losses) of affiliated companies were $(.6) million for the third
     quarter of 2000 compared to $.08 million in the prior year due to the
     Company's recognition of its share of the Mosaic InfoForce, L.P. start up
     costs. Interest and other expenses were $1.3 million for the third quarter
     of 2000 compared to $0.5 million in the prior year due to higher bank
     borrowings during 2000 and increased foreign currency exchange losses
     resulting from the continued strength of the U.S. dollar against European
     currencies in 2000.

     Third Quarter Year To Date Versus Prior Year

              Consolidated revenues were $394.7 million for the nine months
     ended September 30, 2000, a decrease of 2.7% over the corresponding period
     of 1999. U.S. business revenues decreased 4.2% to $298.4 million for the
     nine months ended September 30, 2000 compared to the prior year. The
     decline was due to the impact on the current period's revenues of 1999
     client losses and delays in the delivery of client projects during the
     third quarter of 2000 that the Company has corrected with a capacity
     upgrade. International revenues were up 2.4% to $96.4 million over the
     first three quarters of 1999. Excluding the impact of foreign exchange
     rates, European revenues for the first nine months of 2000, which comprise
     97% of total international revenues, increased 16.0% over the prior year.

              Consolidated costs of information services sold decreased 3.5% to
     $353.4 million for the nine months ended September 30, 2000 compared to
     costs of $366.4 million for the first nine months of 1999. Expenses
     declined primarily due to lower U.S. revenues, savings achieved through the
     Project Delta cost reduction initiative and the continued strengthening of
     the U.S. dollar against European currencies. These savings were offset
     slightly by increased costs related to the investment in the Company's
     CPGNetwork internet-based delivery service and other strategic
     opportunities.

              Consolidated selling, general and administrative expenses
     increased 3.9% to $40.3 million for the nine months ended September 30,
     2000 compared to $38.8 million for the first nine months of 1999. The
     increase is primarily attributable to the costs incurred during 2000 to
     pursue new strategic opportunities for the Company, including
     internet-based business initiatives.

              For the first nine months of 2000, the Company's earnings before
     interest and taxes, excluding restructuring and other charges of $8.8
     million, was $3.1 million compared to operating income of $4.2 million in
     the prior year. Results were below prior year because of the delayed
     financial impact of 1999 U.S. client losses on revenues partially offset by
     improved international performance and reduced U.S. expenses resulting from
     the Company's Project Delta cost reduction initiatives.


                                       15

<PAGE>   16

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.


              Restructuring and other charges are discussed below. Interest and
     other expenses were $2.8 million for the nine months ended September 30,
     2000 compared to $1.1 million in the prior year due to higher bank
     borrowings during 2000 and increased foreign currency exchange losses
     resulting from the continued strength of the U.S. dollar against European
     currencies in 2000. The Company's effective income tax rate is greater than
     the U.S. Federal statutory rate due to certain unbenefited foreign losses,
     goodwill amortization and other nondeductible expenses.

     LIQUIDITY AND CAPITAL RESOURCES

              The Company's current cash resources include its $12.9 million
     consolidated cash balance and $34.1 million available under the Company's
     bank revolving credit facility. The Company anticipates that it will have
     sufficient funds from these sources and internally generated funds from its
     U.S. operations to satisfy its cash needs for the foreseeable future.

     Financings

              The financial covenants in the bank credit agreement, as well as
     in the lease agreement for the Company's Chicago headquarters, require the
     Company to maintain a minimum tangible net worth and to meet certain cash
     flow coverage and leverage ratios. The agreements also limit the Company's
     ability to declare dividends or make distributions to holders of capital
     stock, or redeem or otherwise acquire shares of the Company. Approximately
     $4.6 million is currently available for such distributions under the most
     restrictive of these covenants. The bank credit agreement also contains
     covenants that restrict the Company's ability to incur additional
     indebtedness.

     Cash Flow

              Consolidated net cash provided by operating activities was $101.0
     million for the nine months ended September 30, 2000 compared to $129.4
     million for the same period in 1999. This reduction was primarily
     attributable to lower earnings resulting from restructuring charges and the
     timing of payments of accounts payable and accrued liabilities.
     Consolidated cash flow used in net investing activity was $108.6 million in
     2000 compared to $124.7 million for the same period in 1999. Net investing
     activity in 2000 includes the Company's initial $1.9 million investment in
     the Mosaic InfoForce, L.P. joint venture. During the third quarter of 2000,
     the Company repurchased 102,200 shares of common stock aggregating $.7
     million. The shares are currently being held in treasury and will be sold
     to employees in connection with the Company's Employee Stock Purchase Plan.
     Net cash provided by financing activities was $13.1 million for the nine
     months ended September 30, 2000 compared to net cash used of $1.8 million
     for the same period in 1999. Consolidated cash flow provided by financing
     activities reflects borrowings of $14.8 million under its revolving line of
     credit in 2000 compared to $2.3 million in the prior year.


                                       16

<PAGE>   17

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.

     Other Deferred Costs and Capital Expenditures

              Consolidated deferred data procurement expenditures were $92.9
     million for the nine months ended September 30, 2000 and $98.1 million for
     the same period in 1999. These expenditures are amortized over a period of
     28 months and include payments and services to retailers for point-of-sale
     data and other costs related to collecting, reviewing and verifying panel,
     causal and other data which are an essential part of the Company's
     database. Such expenditures were $54.9 million and $61.2 million for the
     periods ended September 30, 2000 and 1999, respectively, for the Company's
     U.S. services business and $38.0 million and $36.9 million, respectively,
     for the Company's International services business.

              Consolidated capital expenditures were $13.3 million and $24.6
     million for the nine months ended September 30, 2000 and 1999,
     respectively. Capital expenditures for the Company's U.S. services business
     were $9.3 million and $20.7 million, while depreciation expense was $18.8
     million and $16.6 million for the nine months ended September 30, 2000 and
     1999, respectively. Additionally, the Company acquired mainframe computer
     equipment in exchange for a capital lease obligation recorded at $5.6
     million during the current year. Capital expenditures in the prior year
     included computer hardware and software purchases required for Year 2000
     compliance. The Company's International services business capital
     expenditures were $4.0 million and $3.9 million, while depreciation expense
     was $3.4 million for each of the nine months ended September 30, 2000 and
     1999.

              Consolidated capitalized software development costs, primarily in
     the U.S., were $1.5 million and $5.5 million for the nine months ended
     September 30, 2000 and 1999, respectively.

     Impact of Inflation

              Inflation has slowed in recent years, however the Company's
     results of operations are impacted by rising prices given the labor
     intensive nature of the business. To the extent permitted by competitive
     conditions, the Company passes increased costs on to customers by adjusting
     sales prices and, in the case of multi-year contracts, through consumer
     price index provisions in such agreements.

     RESTRUCTURING CHARGES

              In the third quarter of 1999, the Company initiated a
     comprehensive program named Project Delta, with the objective to improve
     productivity and operating efficiencies to reduce the Company's on-going
     cost structure in its U.S. operations. The first phase of Project Delta
     included the identification and assessment of potential operating
     efficiencies in the Company's various U.S. functional areas and was
     completed in the fourth quarter of 1999. The cost reduction program
     implementation began in the first quarter of 2000, with cost savings of
     approximately $11.0 million to $13.0 million achieved year to date. The
     Company expects that annualized cost savings in certain expenses of at
     least $15.0 million will be achievable in the U.S. operations by the end of
     2000.


                                       17
<PAGE>   18

                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.


     Certain costs were not eligible for accrual in 1999 and were recorded
     during the first nine months of 2000. For the quarter and year to date
     September 30, 2000, the components of the restructuring charges included in
     Restructuring and Other Charges in the Statement of Operations consist of
     the following (in thousands):



<TABLE>
<CAPTION>
                                                                         THREE MONTHS               NINE MONTHS
                                                                             ENDED                     ENDED
                                                                      SEPTEMBER 30, 2000         SEPTEMBER 30, 2000
                                                                      ------------------         ------------------

<S>                                                                   <C>                        <C>
     Termination benefits                                                    $  730                     $3,406
     Discontinued activities                                                  1,603                      1,603
     Disposition of excess office space                                        (231)                       519
     Transition of German production to  U.S. facility                          980                      3,179
     Other costs of project                                                      75                        997
                                                                             ------                     ------
                                                                             $3,157                     $9,704
                                                                             ------                     ------
</TABLE>


              Changes in the restructuring reserve, including cash payments, for
     the nine months ended September 30, 2000 are as follows (in thousands):

<TABLE>
<CAPTION>
                                                                              2000 ACTIVITY
                                                                    -------------------------------------
                                                 LIABILITY AT                                               LIABILITY AT
                                              DECEMBER 31, 1999        PROVISION             CASH        SEPTEMBER 30, 2000
                                              -----------------        ---------             ----        ------------------


<S>                                           <C>                      <C>                 <C>           <C>
     Termination benefits                           $8,391              $3,406            $ (7,035)            $4,762

     Discontinued activities                            --                 928                  --                928


     Disposition of excess office space                494                (114)               (371)                 9

     Transition of German production to
     U.S. facility                                      --               3,179              (2,790)               389

     Other costs of project                             --                 997                (997)                --
                                                    ------              ------            --------             ------

                                                     8,885               8,396             (11,193)             6,088

     Non-cash provision                                 --               1,308                  --                 --
                                                    ------              ------            --------             ------

                                                    $8,885              $9,704            $(11,193)            $6,088
                                                    ======              ======            ========             ======
</TABLE>


                                       18
<PAGE>   19


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.




              Termination Benefits: In the fourth quarter of 1999, the Company
     expected to terminate 325 full-time positions during 2000 impacting
     virtually all areas of the U.S. business, including operations, client
     services, technology and marketing, as well as Corporate headquarters. As
     of September 30, 2000, $7.0 million of accrued termination benefits have
     been disbursed and through October 31, 2000, 253 employees have been
     terminated under various Project Delta initiatives. Additional provisions
     have been made throughout the year to cover retention and relocation
     incentive costs that were not eligible for accrual at December 31, 1999.

              Discontinued Activities: During the third quarter of 2000, the
     Company ceased operations of entities in Japan (IRI Apollo K.K.) and
     Australia (Information Resources Australia Pty, Ltd.) which were
     responsible for distributing Apollo software. The Company has entered into
     agreements with its 40% owned affiliate, Information Resources Japan Ltd.
     and an unrelated company in Australia to distribute its Apollo software. In
     connection with the cessation of local operations, the Company reserved $.3
     million and $.6 million, respectively, relating to the Japan and Australia
     businesses.

              During the third quarter of 2000, it was determined that certain
     equipment used by the Company's field staff to collect retail information
     will no longer be utilized after the second quarter of 2001. Accordingly,
     the Company recognized a non-cash charge of $1.1 million in the third
     quarter of 2000 relating to accelerated depreciation on this equipment.

              Disposition of Excess Office Space: As a result of planned
     headcount reductions and space not currently utilized, the Company has
     decided to vacate certain facilities. The Company recorded $.6 million of
     charges relating to accelerated depreciation on leasehold improvements and
     furniture and fixtures and $(.1) million in lease buyouts associated with
     these facilities in the first three quarters of 2000.

              Transition of German Production to U.S. Facility: The Company made
     a decision in the fourth quarter of 1999 to transfer production of IRI/GfK
     Retail Services GmbH from an external vendor in Germany to the U.S.
     headquarter facility in order to enhance its InfoScan offering in Germany
     and to reduce future production costs. For the nine months ended September
     30, 2000, charges of approximately $3.2 million were recorded related to
     this transition. The transition is expected to be completed during the
     first quarter of 2001, with estimated future costs that cannot currently be
     accrued of approximately $5.0 million.

              Other Restructuring Costs: Other restructuring costs primarily
     relate to final fees paid to the Boston Consulting Group for assistance in
     the identification and execution of the Project Delta objectives.


                                       19
<PAGE>   20



                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D.


              Future Restructuring Charges: The Company is progressing on its
     previously announced restructuring activities, and believes that the
     restructuring provisions recorded will be adequate to cover the estimated
     restructuring costs. The Company anticipates that it will continue to incur
     restructuring charges for items that do not meet the criteria for accrual
     and for future restructurings. The Company expects to incur additional
     costs of $9.0 million to $10.0 million relating to the first phase of
     Project Delta which could not be accrued as of September 30, 2000. In
     addition, the Company has begun the initial stages of reviewing its
     International and information technology operations to assess potential
     restructuring costs and benefits. The Company cannot yet estimate the costs
     for these future restructuring programs.

              In the fourth quarter of 1999, Restructuring and Other Charges
     included a $0.9 million charge for a non-current receivables reserve. This
     reserve was reversed in the second quarter of 2000 pursuant to a settlement
     agreement reached with the other party.

     EUROPEAN CURRENCY CONVERSION ISSUES

              In accordance with the 1992 treaty of the European Union, on
     January 1, 1999, a new single European currency, the Euro, became legal
     tender. The Euro will replace the sovereign currencies ("legacy
     currencies") of the eleven initial members of the European Union
     ("participating countries"). On this date, fixed conversion rates between
     the Euro and the legacy currencies in those particular countries were
     established.

              As the Company has operations in several of the participating
     countries, it will be affected by issues relating to the introduction of
     and transition to the Euro. The Company's European Executive Committee is
     charged with formulating and executing all aspects of the Company's plan
     concerning the conversion to the Euro.

              The Company does not expect the cost of any system modifications
     to be material or result in any material increase in transaction costs. The
     Company will continue to evaluate the impact of the Euro, however, based on
     currently available information, management does not believe the
     introduction of the Euro will have a material adverse impact on the
     Company's financial condition or overall trends in results of operations.


                                       20
<PAGE>   21


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
            OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, CONT'D


     FORWARD LOOKING INFORMATION

              All statements other than statements of historical fact made in
     this Quarterly Report on Form 10-Q are forward looking. In particular,
     statements regarding industry prospects, our future results of operations
     or financial position, and statements preceded by, followed by or that
     include the words "intends," "estimates," "believes," "expects,"
     "anticipates," "should," "could," or similar expressions, are
     forward-looking statements and reflect our current expectations and are
     inherently uncertain. The Company's actual results may differ significantly
     from our expectations for a number of reasons, including risks and
     uncertainties relating to customer renewals of service contracts, the
     timing of significant new customer engagements, the success of implementing
     Project Delta, competitive conditions, the potential for future client
     losses, changes in client spending for the non-contractual services the
     Company offers, the release of chain-specific data by European retailers,
     foreign currency exchange rates, European currency conversion issues and
     other factors beyond the Company's control. These risks and uncertainties
     are described herein and in reports and other documents filed by the
     Company with the Securities and Exchange Commission.


                                       21
<PAGE>   22


                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES
                                     PART II

                                OTHER INFORMATION



<TABLE>
<CAPTION>
      ITEM 6.      EXHIBITS AND REPORTS ON FORM 8-K

        a.         Exhibits

                   Exhibit No.                         Description of Exhibit                                           Page
                   -----------                         ----------------------                                           ----

<S>                <C>                                 <C>                                                              <C>
                   10.1                                Employment and Change in Control Agreement between                EF
                                                         the Company and certain executive officers

                   10.2                                Outsourcing Services Agreement between the Company                EF
                                                         and Mosaic InfoForce, L.P. Portions of this
                                                         exhibit have been omitted pursuant to a request
                                                         for confidential treatment.

                   10.3                                Information Resources, Inc. Third Amendment to                    EF
                                                         Credit Agreement

                   10.4                                Directors Deferred Compensation Agreement                         EF


        b.         Reports on Form 8-K.

                   None.
</TABLE>


                                           22
<PAGE>   23



                  INFORMATION RESOURCES, INC. AND SUBSIDIARIES



                                   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.




                                        INFORMATION RESOURCES, INC.
                                        ---------------------------
                                        (Registrant)






                                        /s/ ANDREW G. BALBIRER
                                        -------------------------------------
                                        Andrew G. Balbirer
                                        Executive Vice President
                                        and Chief Financial Officer
                                        (Authorized Officer of Registrant)







                                        /s/ MARY K. SINCLAIR
                                        -------------------------------------
                                        Mary K. Sinclair
                                        Controller
                                        (Principal Accounting Officer)

November 10, 2000



                                           23