INSURANCE AUTO AUCTIONS INC /CA
SC 13G/A, 2000-02-11
MOTOR VEHICLES & MOTOR VEHICLE PARTS & SUPPLIES
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549


                                  SCHEDULE 13G



                   Under the Securities Exchange Act of 1934
                              (Amendment No. 2)*


                         INSURANCE AUTO AUCTIONS, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                 Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   457875102
                        ------------------------------
                                 (CUSIP Number)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


Schedule is filed pursuant Rule 13d-1(b)

                               Page 1 of 7 pages




<PAGE>

- --------------------                                    ---------------------
 CUSIP NO. 457875102                  13G                Page 2  of  7 Pages
- --------------------                                    ---------------------


- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Wanger Asset Management, L.P. 36-3820584

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
       Not Applicable                                           (b) [_]

- ------------------------------------------------------------------------------
      SEC USE ONLY
 3


- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4
       Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5
     NUMBER OF             None

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                           994,500
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7
    REPORTING              None

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                           994,500
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9
       994,500
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
       Not Applicable                                               [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
       8.6%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
       IA

- ------------------------------------------------------------------------------
                     *SEE INSTRUCTION BEFORE FILLING OUT!






<PAGE>


- --------------------                                    ---------------------
 CUSIP NO. 457875102                  13G                Page 3  of  7 Pages
- --------------------                                    ---------------------


- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Wanger Asset Management, Ltd.

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
       Not Applicable                                           (b) [_]

- ------------------------------------------------------------------------------
      SEC USE ONLY
 3


- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4
       Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5
     NUMBER OF             None

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                           994,500
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7
    REPORTING              None

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                           994,500
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9
       994,500
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
       Not Applicable                                               [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
       8.6%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
       CO

- ------------------------------------------------------------------------------
                     *SEE INSTRUCTION BEFORE FILLING OUT!







<PAGE>

Item 1

     (a) Name of Issuer:

               Insurance Auto Auctions, Inc.

     (b) Address of Issuer's Principal Executive Offices:

               850 East Algonquin Rd.
               Suite 100
               Schaumburg, IL 60173-3855

Item 2

     (a) Name of Person Filing:

               Wanger Asset Management, L.P. ("WAM")
               Wanger Asset Management Ltd, the general partner of WAM
               ("WAM LTD.")

     (b) Address of Principal Business Office:

               WAM and WAM LTD. are located at:

               227 West Monroe Street, Suite 3000
               Chicago, Illinois 60606

     (c) Citizenship:

               WAM is a Delaware limited partnership; and WAM LTD, is a
               Delaware corporation.

     (d) Title of Class of Securities:

               Common Stock

     (e) CUSIP Number:

               457875102

Item 3. Type of Person:

               (e)  WAM is an Investment Advisor registered under section 203
                    of the Investment Advisers Act of 1940; WAM LTD. is the
                    General Partner of the Investment Adviser.

                               Page 4 of 7 pages
<PAGE>

Item 4. Ownership (at December 31, 1999):

     (a)  Amount owned "beneficially" within the meaning of rule 13d-3:

          994,500

     (b)  Percent of class:

          8.6%

     (c)  Number of shares as to which such person has:

          (i)   sole power to vote or to direct the vote: none

          (ii)  shared power to vote or to direct the vote: 994,500

          (iii) sole power to dispose or to direct the disposition of: none

          (iv)  shared power to dispose or to direct disposition of: 994,500

Item 5.  Ownership of Five Percent or Less of a Class:

            Not Applicable

Item 6.  Ownership of More than Five Percent on Behalf of Another Person:

            The shares reported herein have been acquired on behalf of
            discretionary clients of WAM. Persons other than WAM and WAM
            LTD. are entitled to receive all dividends from, and proceeds from
            the sale of, those shares.

Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company:

            Not Applicable

Item 8.  Identification and Classification of Members of the Group:

            Not Applicable

Item 9.  Notice of Dissolution of a Group:

            Not Applicable

                               Page 5 of 7 pages
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Item 10. Certification:

               By signing below I certify that, to the best of my knowledge and
               belief, the securities referred to above were acquired and are
               held in the ordinary course of business and were not acquired and
               are not held for the purpose of or with the effect of changing or
               influencing the control of the issuer of the securities and were
               not acquired and are not held in connection with or as a
               participant in any transaction having that purpose or effect.

                               Page 6 of 7 pages

<PAGE>


                                   Signature
                                   ---------

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: February 11, 2000

                         This undersigned corporation, in the date written,
                         agrees and consents to the joint filing on its behalf
                         of this Schedule 13G in connection with its beneficial
                         ownership of the security reported herein.


                                   WANGER ASSET MANAGEMENT, LTD.
                                    for itself and as general partner of
                                    WANGER ASSET MANAGEMENT, L.P.


                                   By: /s/ Bruce H. Lauer
                                       -----------------------------------
                                       Bruce H. Lauer
                                       Vice President

                               Page 7 of 7 pages


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