STERICYCLE INC
SC 13D, 1999-11-22
HAZARDOUS WASTE MANAGEMENT
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<PAGE>


                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 Schedule 13D
                                (Rule 13d-101)

          INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
     RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a)

                             (Amendment No. __ )/1/

                               Stericycle, Inc.
                     ------------------------------------
                               (Name of Issuer)

                    Common Stock, par value $.01 per share
                  -------------------------------------------
                        (Title of Class of Securities)

                                   858912108
                    --------------------------------------
                                (CUSIP Number)

       Thomas R. Reusche                                John P. Connaughton
Madison Dearborn Partners, Inc.                         Bain Capital, Inc.
   Three First National Plaza                            Two Copley Place
    Chicago, Illinois  60602                        Boston, Massachusetts 02116
          312/732-6281                                     617/572-3000

                (Name, Address and Telephone Number of Persons
               Authorized to Receive Notices and Communications)

                               November 12, 1999
            (Date of Event which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following
box.  [_]

Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits.  See Rule 13d-7(b) for other
parties to whom copies are to be sent.


/1/ 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 disclosures provided in a prior cover page.

The information required on 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 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).

                              Page 1 of 39 Pages
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 2 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Bain Capital Fund VI, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          1,451,643 (See Item 5)
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             1,451,643 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      1,451,643 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      9.02%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 3 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Bain Capital Partners VI, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
     Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          1,451,643 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          1,451,643 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      1,451,643 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      9.02%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 4 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Bain Capital Investors VI, Inc.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          1,451,643 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          1,451,643 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      1,451,643 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      9.02%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      CO
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 5 OF 39 PAGES
- -----------------------                                  ---------------------

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

      BCIP Associates II
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
     Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          256,650 (See Item 5)
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             256,650 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      256,650 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      1.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 6 OF 39 PAGES
- -----------------------                                  ---------------------

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

      BCIP Associates II-B
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            35,178 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             35,178 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      35,178 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.24%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 7 OF 39 PAGES
- -----------------------                                  ---------------------

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

      BCIP Associates II-C
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            75,415 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             75,415 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      75,415 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.51%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 8 OF 39 PAGES
- -----------------------                                  ---------------------

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

      BCIP Trust Associates II
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
     Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            73,784 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             73,784 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      73,784 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.50%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 9 OF 39 PAGES
- -----------------------                                  ---------------------

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

      BCIP Trust Associates II-B
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
     Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            11,776 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             11,776 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      11,776 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.08%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                      PAGE 10 OF 39 PAGES
- -----------------------                                  ---------------------

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

      PEP Investments Pty Limited
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      New South Wales, Australia
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            4,839 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             4,839 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      4,839 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.03%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      OO
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 11 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Sankaty High Yield Asset Partners, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
     Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            106,071 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             106,071 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 12 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Sankaty High Yield Asset Investors, LLC
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          106,071 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          106,071 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      OO
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 13 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Sankaty High Yield Asset Investors, Ltd.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Bermuda
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          106,071 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          106,071 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      OO
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 14 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Bain Capital, Inc.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          452,803 (See item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          452,803 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      452,803 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      3.00%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      CO
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 15 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Brookside Capital Partners Fund, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            106,071 (See Item 5)

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             106,071 (See Item 5)

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 16 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Brookside Capital Investors, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          106,071 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          106,071 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 17 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Brookside Capital Investors, Inc.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          106,071 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          106,071 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      106,071 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.72%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      CO
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 18 OF 39 PAGES
- -----------------------                                  ---------------------

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

      W. Mitt Romney
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      United States
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF            0

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          2,116,588 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING             0

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          2,116,588 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      2,116,588 (See Item 5)

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      12.63%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      IN
- ------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 19 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Madison Dearborn Capital Partners III, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      OO
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          2,087,925 (See Item 5)
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             0
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          2,087,925 (See Item 5)
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      2,087,925 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      12.48%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                    * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 20 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Madison Dearborn Special Equity III, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      00
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          46,361 (See Item 5)
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             0
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          46,361 (See Item 5)
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      46,361 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.32%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                    * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 21 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Special Advisors Fund, LLC, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      00
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          8,571 (See Item 5)
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             0
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          8,571 (See Item 5)
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      8,571 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.06%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                    * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 22 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Madison Dearborn Partners III, L.P.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      00
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          2,142,857 (See Item 5)
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          2,142,857 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      2,142,857 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      12.76%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      PN
- ------------------------------------------------------------------------------


                    * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                 SCHEDULE 13D
- -----------------------                                  ---------------------
  CUSIP NO. 858912108                                     PAGE 23 OF 39 PAGES
- -----------------------                                  ---------------------

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

      Madison Dearborn Partners, LLC
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
      00
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e) [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Delaware
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             2,142,857 (See Item 5)
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          2,142,857 (See Item 5)
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11

      2,142,857 (See Item 5)
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      12.76%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      OO
- ------------------------------------------------------------------------------


                    * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

     Item 1.  Security and Issuer.

     This Schedule 13D Statement (this "Statement") relates to the common stock,
par value $.01 per share ("Common Stock"), of Stericycle, Inc., a Delaware
corporation (the "Issuer"). Each of the persons named in Item 2 below may be
deemed to be the beneficial owner of shares of Common Stock through its
ownership of the Series A Convertible Preferred Stock, par value $.01 per share
(the "Preferred Stock") of the Issuer, which is convertible into Common Stock at
the option of the holder thereof at any time. The address of the Issuer's
principal executive offices is 1419 Lake Cook Road, Suite 410, Deerfield,
Illinois 60015.

     Item 2.  Identity and Background.

     This Statement is being jointly filed by each of the following persons
pursuant to Rule 13d-1(f) promulgated by the Securities and Exchange Commission
(the "Commission") pursuant to Section 13 of the Securities Exchange Act of 1934
as amended (the "Exchange Act"):

(i)  Bain Capital Fund VI, L.P. ("BCF VI"), a Delaware limited partnership, by
     virtue of its direct beneficial ownership of 25,403.76 shares of Preferred
     Stock;

(ii)  Bain Capital Partners VI, L.P. ("BCP VI"), a Delaware limited partnership,
      as the sole general partner of BCF VI;

(iii) Bain Capital Investors VI, Inc. ("BCI VI Inc."), a Delaware
      corporation, as the sole general partner of BCP VI;

(iv)  BCIP Associates II ("BCIP II"), a Delaware general partnership, by virtue
      of its direct beneficial ownership of 4,491.38 shares of Preferred Stock;

(v)   BCIP Associates II-B ("BCIP II-B"), a Delaware general partnership, by
      virtue of its direct beneficial ownership of 615.62 shares of Preferred
      Stock;

(vi)  BCIP Associates II-C ("BCIP II-C"), a Delaware general partnership, by
      virtue of its direct beneficial ownership of 1,319.76 shares of Preferred
      Stock;

(vii) BCIP Trust Associates II ("BCIPT II"), a Delaware general partnership,
      by virtue of its direct beneficial ownership of 1,219.22 shares of
      Preferred Stock;

(viii) BCIP Trust Associates II-B ("BCIPT II-B"), a Delaware general
       partnership, by virtue of its direct beneficial ownership of 206.08
       shares of Preferred Stock;

(ix)  PEP Investments Pty Limited ("PEP"), a New South Wales limited company, by
      virtue of its direct beneficial ownership of 84.68 shares of Preferred
      Stock;

(x)   Sankaty High Yield Asset Partners, L.P. ("Sankaty"), a Delaware limited
      partnership, by virtue of its direct beneficial ownership of 1,856.25
      shares of Preferred Stock;

(xi)  Sankaty High Yield Asset Investors, LLC ("Sankaty LLC"), a Delaware
      limited liability corporation, as the sole general partner of Sankaty;

(xii) Sankaty High Yield Asset Investors, Ltd. ("Sankaty Ltd"), a Bermuda
      corporation, as the managing member of Sankaty LLC;

                              Page 24 of 39 Pages
<PAGE>

(xiii) Bain Capital, Inc. ("BCI"), a Delaware corporation, as the managing
       general partner of BCIP II, BCIP II-B, BCIP II-C, BCIPT II and BCIPT II;

(xiv)  Brookside Capital Partners Fund, L.P. ("Brookside"), a Delaware limited
       partnership, by virtue of its direct beneficial ownership of 1,856.25
       shares of Preferred Stock;

(xv)   Brookside Capital Investors, L.P. ("Brookside Investors"), a Delaware
       limited partnership, by virtue of it being the sole general partner of
       Brookside;

(xvi)  Brookside Capital Investors, Inc., a Delaware corporation ("Brookside
       Inc."), by virtue of it being the sole general partner of the Brookside
       Investors;

(xvii) W. Mitt Romney ("Mr. Romney"), a citizen of the United States, as the
       sole shareholder, Chairman, Chief Executive Officer and President of BCI,
       BCP VI Inc., Brookside Inc. and Sankaty Ltd.;

(xviii) Madison Dearborn Capital Partners III, L.P. ("MDCP"), a Delaware limited
        partnership, by virtue of its direct beneficial ownership of 36,538.68
        shares of Preferred Stock;

(xix)  Madison Dearborn Special Equity III, L.P. ("MDSE"), Delaware limited
       partnership, by virtue of its direct beneficial ownership of 811.32
       shares of Preferred Stock;

(xx)  Special Advisors Fund I, LLC, L.P. ("SAF"), a Delaware limited
      partnership, by virtue of its direct beneficial ownership of 150 shares of
      Preferred Stock;

(xxi) Madison Dearborn Partners III, L.P. ("MDP III"), a Delaware limited
      partnership, by virtue of it being the sole general partner of MDCP, MDSE
      and SAF; and

(xxii) Madison Dearborn Partners, LLC ("MDP"), a Delaware corporation, by virtue
       of it being the sole general partner of MDP III. Dispositive and voting
       powers of securities owned by MDP III is shared by MDP and an
       advisory committee of limited partners of MDP III (the "L.P.
       Committee").


     BCF VI, BCIP II, BCIP II-B, BCIP II-C, Brookside, BCIPT II, BCIPT II-B,
Sankaty and PEP are collectively referred herein as the "Bain Investors."  MDCP,
MDSE and SAF are collectively referred herein as the "MDP Investors." The Bain
Investors and the MDP Investors are collectively referred herein as the
"Investors."  The Bain Investors, BCP VI, BCI VI Inc., BCI, Brookside Investors,
Brookside Inc., Sankaty LLC, Sankaty Ltd., and Mr. Romney are collectively
referred herein as the "Bain Reporting Persons." The MDP Investors, MDP III and
MDP are collectively referred herein as the "MDP Reporting Persons."  The Bain
Reporting Persons and MDP Reporting Persons are collectively referred herein as
the "Reporting Persons."  The Reporting Persons have entered into a Joint Filing
Agreement, a copy of which is filed with this statement as Exhibit A (which is
incorporated herein by reference), pursuant to which the Reporting Persons have
agreed to file this statement jointly in accordance with the provisions of Rule
13d-1(f)(1) under the Exchange Act.

     Information with respect to each of the Reporting Persons is given solely
by such Reporting Person, and no Reporting Person assumes responsibility for the
accuracy or completeness of information furnished by another Reporting Person.
By their signature on this Statement, each of the Reporting Persons agrees that
this Statement is filed on behalf of such Reporting Person.

                              Page 25 of 39 Pages
<PAGE>

     The Reporting Persons may be deemed to constitute a "group" for purposes of
Section 13(d)(3) of the Exchange Act.  The Reporting Persons expressly disclaim
that they have agreed to act as a group other than as described in this
Statement.

     Each of the Bain Investors is principally engaged in the business of
investing in securities.  BCP VI is principally engaged in the business of
serving as the general partner for BCF VI.  BCI VI Inc. is principally engaged
in the business of serving as the general partner for BCP VI. Brookside
Investors is principally engaged in the business of serving as the general
partner for Brookside.  Brookside Inc. is principally engaged in the business of
serving as the general partner for Brookside Investors.  Sankaty LLC is
principally engaged in the business of serving as the general partner for
Sankaty.  Sankaty Ltd. is principally engaged in the business of serving as the
general partner for Sankaty LLC.  BCI is principally engaged in the business of
serving as the managing general partner for BCIP II, BCIP II-B, BCIP II-C, BCIPT
II and BCIPT II-B. Mr. Romney is principally engaged in the business of serving
as sole shareholder of BCI, BCP VI Inc., Brookside Inc. and Sankaty Ltd.

     Attached as Schedule A to this Statement is information concerning the Bain
Reporting Persons and other persons to which such information is required to be
disclosed in response to Item 2 and General Instruction C to Schedule 13D.

     Except as otherwise set forth herein, the business address of the Bain
Reporting Persons is Two Copley Place, Boston Massachusetts, 02116.  The
principal business address of Sankaty Ltd. is Reid House, 31 Church Street,
Hamilton Hm 12, Bermuda. The principal business address of PEP is Level 34, The
Chiefley Tower, 2 Chiefley Square, Sydney, New South Wales, Australia.

     Each of the MDP Investors is principally engaged in the business of
investing in securities. MDP III is engaged primarily in the business of serving
as the general partner for MDCP, MDSE and SAF.  MDP is engaged primarily in the
business of serving as the general partner for MDP III.

     Attached as Schedule B to this Statement is information concerning the MDP
Reporting Persons and other persons to which such information is required to be
disclosed in response to Item 2 and General Instruction C to Schedule 13D.

     The address of the principal business of the MDP Reporting Persons is
Three First National Plaza, Suite 3800, Chicago, Illinois  60602.

     During the past five years, none of the Reporting Persons or their
executive officers or directors has been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors).

     During the past five years, none of the Reporting Persons or their
executive officers or directors was a party to a civil proceeding of a judicial
or administrative body of competent jurisdiction as a result of which such
person was or is subject to a judgment, decree or final order enjoining future
violations of, or prohibiting or mandating activity subject to, federal or state
securities laws or finding any violation with respect to such laws.

     Item 3.  Source and Amount of Funds or Other Consideration.

     Pursuant to an Amended and Restated Series A Convertible Preferred Stock
Purchase Agreement (the "Purchase Agreement"), dated as of September 26, 1999,
between the Issuer and the Investors, the Investors acquired an aggregate of
75,000 shares of the Preferred Stock for an

                              Page 26  of 39 Pages
<PAGE>

aggregate purchase price of $75,000,000. The Investors' source of funds was
capital contributions from the partners of the Investors.

     Item 4.  Purpose of Transaction.

     Except as disclosed herein, the Investors have acquired the shares of
Preferred Stock for investment purposes.  Depending on market conditions and
other factors (including, but not limited to, the evaluation of the Issuer's
businesses and prospects, the availability of funds and general economic
conditions), the Investors may, from time to time, purchase additional shares of
Common Stock or dispose of all or a portion of their investments in the Issuer,
subject to the terms of the agreements listed below in this Item 4.
Furthermore, as stated below in this Item 4, to the extent dividends are paid
with respect to the Preferred Stock, such payments are to be made through the
issuance of additional shares of Preferred Stock. The acquisition of these
additional shares of Preferred Stock will enable the Investors to acquire
additional shares of the Issuer's Common Stock through the conversion of such
shares.

     A copy of the Purchase Agreement is attached hereto as Exhibit B and
incorporated by reference herein; a copy of the Certificate of Designation for
the Series A Preferred Stock (the "Certificate of Designation") is attached
hereto as Exhibit C and incorporated by reference herein; a copy of the
Registration Rights Agreement for the Preferred Stock is attached hereto as
Exhibit D and incorporated by reference herein; and a copy of the Corporate
Governance Agreement is attached hereto as Exhibit E and incorporated by
reference herein.  Set forth below is a summary of the material terms of the
above agreements.

     The following summaries are qualified in their entirety by reference to the
detailed provisions of the Purchase Agreement, Certificate of Designation,
Registration Rights Agreement and Corporate Governance Agreement.

Purchase Agreement
- ------------------

     The Investors purchased an aggregate of 75,000 shares of Preferred Stock
for $1,000 per share, or an aggregate purchase price of $75,000,000.  The
Purchase Agreement contains customary representations and warranties for an
agreement of this type, preemptive rights requiring the Issuer, upon the
issuance or sale of shares of capital stock or securities of the Issuer, to
first offer to sell a portion of such stock or securities to the holders of
Preferred Stock, and certain indemnification provisions.

Certificate of Designation
- --------------------------

Dividends.  Pursuant to the Certificate of Designation, the holders of Preferred
Stock are entitled to preferential dividends payable in additional shares of
Preferred Stock.  In addition to the preferential dividends, holders of
Preferred Stock shall share pro rata with holders of Common Stock, on the basis
of the number of Common Stock which each holder of Preferred Stock would be
entitled to receive upon conversion of the holder's Preferred Stock into Common
Stock as of the record date for the dividend or distribution in all other
dividends and distributions.

Liquidation.  The Certificate of Designation provides that, upon any
liquidation, dissolution or winding up of the Issuer, each holder of Preferred
Stock shall be entitled to be paid, before any distribution or payment is made
to any holders of Common Stock, an amount in cash equal to (i) the sum of $1,000
per share plus accumulated preferential dividends plus accrued and unpaid
dividends

                              Page 27 of 39 Pages
<PAGE>

not yet accumulated or (ii) the amount that would be payable to the holder of
Preferred Stock if the Preferred Stock were converted into Common Stock
immediately prior to the liquidation.

Voting Rights.  The Certificate of Designation provides that the holders of
Preferred Stock shall be entitled to vote with holders of Common Stock as a
single class on each matter submitted to a vote of the Issuer's stockholders.
Each share of Preferred Stock shall have a number of votes equal to the number
of shares of Common Stock into which the Preferred Stock is convertible.
Furthermore, so long as the Investors and their affiliates hold at least 50% of
the Preferred Stock, holders of the Preferred Stock shall be entitled to, voting
as a separate class, elect two directors to the Issuer's board of directors. In
the event that the initial holders of Preferred Stock cease to hold at least 50%
of the Preferred Stock, but continue to hold at least 25% of the Preferred
Stock, holders of the Preferred Stock shall be entitled to elect one director.
The voting rights of the Investors are further enumerated in the Corporate
Governance Agreement. Pursuant to the terms of the Certificate of Designation
and the Inter-Investor Agreement, which is described more fully below in Item 5,
on November 11, 1999, John P. Connaughton was appointed to the Issuer's board of
directors as the representative for the Bain Investors, and Thomas R. Reusche
was appointed to the Issuer's board of directors as the representative for the
MDP Investors.

Conversion.  At any time, a holder of Preferred Stock may convert all or a
portion of its shares of Preferred Stock into a number of shares of Common Stock
by dividing (a) the aggregate liquidation value (defined as the sum of (i)
$1,000 plus (ii) all accumulated preferential dividends on such share plus (iii)
all accrued and unpaid dividends on such share which have not yet been
accumulated) of the shares to be converted, by (b) an initial conversion price
of $17.50, which is subject to adjustment from time to time pursuant to the
specific terms of the Certificate of Designation.

Registration Rights Agreement
- -----------------------------

     In connection with the acquisition of the Preferred Stock, the Investors
were granted certain registration rights with respect to the shares of Preferred
Stock pursuant to the Registration Rights Agreement. The Registration Rights
Agreement provides the Investors with the right to require the Issuer to (i)
subject to certain limitations, effect three registrations of the Common Stock
issuable upon conversion of the Preferred Stock, in each case, under applicable
United States federal securities laws upon demand by the Investors, one of which
may consist of a shelf registration statement under Rule 415 of the Securities
Act of 1933 (the "Act"), and (ii) include, subject to certain limitations, at
the request of the Investors, the Common Stock issuable upon conversion of the
Preferred Stock in any registration of shares of Common Stock initiated by the
Issuer.

     Except as described in the Purchase Agreement, Certificate of Designation,
Registration Rights Agreement, or Corporate Governance Agreement and otherwise
set forth in this Statement and/or the underlying Common Stock, none of the
Reporting Persons or any person/individual otherwise identified in Item 2 has
any present plans or proposals which relate to or would result in the following:
(a) the acquisition of any additional securities of the Issuer, or the
disposition of any securities of the Issuer; (b) any extraordinary corporate
transaction, such as a merger, reorganization or liquidation of the Issuer or
its subsidiaries; (c) a sale or transfer of a material amount of assets of the
Issuer or its subsidiaries; (d) any material change in the present board of
directors or management of the Issuer, (e) any material change in the present
capitalization of or dividend policy of the Issuer; (f) any material change in
the Issuer's business or corporate structure; (g) any change in the Issuer's
charter or by-laws or other actions which may impede the acquisition of control
of the Issuer by any person; (h) the termination of the Issuer's registration to
be quoted on the NASDAQ National Market; (i) the termination of the Issuer's
registration under the Exchange Act; or (j) any action similar to any of those
enumerated above.  Notwithstanding the foregoing, the Reporting Persons reserve
the right to effect any of such actions as any of them may deem necessary or
appropriate in the future.

                              Page 28 of 39 Pages
<PAGE>

     Item 5.  Interest in Securities of the Issuer.

     As of the date hereof, each share of Preferred Stock is convertible into
57.14 shares of Common Stock.

     As of the date hereof, by virtue of its beneficial ownership of 25,403.76
shares of Preferred Stock, BCF VI beneficially owns 1,451,643 shares of Common
Stock.  Such 25,403.76 shares of Preferred Stock (assuming conversion of all
such 25,403.76 shares of Preferred Stock into Common Stock) represent
approximately 9.02% of the total number of outstanding shares of Common Stock
issued and outstanding as of November 10, 1999, as reported in the Issuer's
Quarterly Report on Form 10-Q for the quarterly period ended September 30,1999
(the "Quarterly Report").  BCF VI has sole voting and sole dispositive power
with respect to such shares.

     BCP VI, as the sole general partner of BCF VI, may be deemed to share
voting and dispositive power with respect to 1,451,643 shares of Common Stock
currently held by BCF VI (assuming conversion of all of the shares of Preferred
Stock held by BCF VI into Common Stock), which represents approximately 9.02% of
the total number of outstanding shares of Common Stock as reported in the
Quarterly Report.  The filing of this Statement by BCP VI shall not be construed
as an admission that BCP VI is, for the purpose of Section 13(d) of the Exchange
Act, the beneficial owner of such shares held by BCF VI.

     BCI VI Inc., as the sole general partner of BCP VI, may be deemed to share
voting and dispositive power with respect to 1,451,643 shares of Common Stock
currently held by BCF VI (assuming conversion of all of the shares of Preferred
Stock held by BCF VI into Common Stock), which represents approximately 9.02% of
the total number of outstanding shares of Common Stock as reported in the
Quarterly Report.  The filing of this Statement by BCI VI Inc. shall not be
construed as an admission that BCI VI Inc. is, for the purpose of Section 13(d)
of the Exchange Act, the beneficial owner of such shares held by BCF VI.

     As of the date hereof, by virtue of its beneficial ownership of 4,491.38
shares of Preferred Stock, BCIP II beneficially owns 256,650 shares of Common
Stock.  Such 4,491.38 shares of Preferred Stock (assuming conversion of all such
4,491.38 shares of Preferred Stock held by BCIP II into Common Stock) represent
approximately 0.18% of the total number of outstanding shares of Common Stock as
reported in the Quarterly Report.  BCIP II has sole voting and sole dispositive
power with respect to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 615.62
shares of Preferred Stock, BCIP II-B beneficially owns 35,178.19 shares of
Common Stock.  Such 615.62 shares of Preferred Stock (assuming conversion of all
such 615.62 shares of Preferred Stock held by BCIP II-B into Common Stock)
represent approximately 0.24% of the total number of outstanding shares of
Common Stock as reported in the Quarterly Report.  BCIP II-B has sole voting and
sole dispositive power with respect to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 1,319.76
shares of Preferred Stock, BCIP II-C beneficially owns 75,415 shares of Common
Stock.  Such 1,319.76 shares of Preferred Stock (assuming conversion of all such
1,319.76 shares of Preferred Stock held by BCIP II-C into Common Stock)
represent approximately 0.51% of the total number of outstanding shares of
Common Stock as reported in the Quarterly Report.  BCIP II-C has sole voting and
sole dispositive power with respect to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 1,291.22
shares of Preferred Stock, BCIPT II beneficially owns 73,784 shares of Common
Stock.  Such 1,291.22 shares of

                              Page 29 of 39 Pages
<PAGE>

Preferred Stock (assuming conversion of all such 1,291.22 shares of Preferred
Stock held by BCIPT II into Common Stock) represent approximately 0.05% of the
total number of outstanding shares of Common Stock as reported in the Quarterly
Report. BCIPT II has sole voting and sole dispositive power with respect to such
shares.

     As of the date hereof, by virtue of its beneficial ownership of 206.08
shares of Preferred Stock, BCIPT II-B beneficially owns 11,776 shares of Common
Stock.  Such 206.08 shares of Preferred Stock (assuming conversion of all such
206.08 shares of Preferred Stock held by BCIPT II-B into Common Stock) represent
approximately 0.08% of the total number of outstanding shares of Common Stock as
reported in the Quarterly Report.  BCIPT II-B has sole voting and sole
dispositive power with respect to such shares.

     BCI, as the managing general partner of BCIPT II, BCIPT II-B, BCIP II, BCIP
II-B and BCIP II-C, may be deemed to share voting and dispositive power with
respect to 452,803 shares of Common Stock currently held by BCIPT II, BCIPT II-
B, BCIP II, BCIP II-B and BCIP II-C (assuming conversion of all of the shares of
Preferred Stock held by BCIPT II, BCIPT II-B, BCIP II, BCIP II-B and BCIP II-C
into Common Stock), which represents approximately 3.00% of the total number of
outstanding shares of Common Stock as reported in the Quarterly Report. The
filing of this Statement by BCI shall not be construed as an admission that BCI
is, for the purpose of Section 13(d) of the Exchange Act, the beneficial owner
of such shares held by BCIPT II, BCIPT II-B, BCIP II, BCIP II-B and BCIP II-C.

     As of the date hereof, by virtue of its beneficial ownership of 84.68
shares of Preferred Stock, PEP beneficially owns 4,839 shares of Common Stock.
Such 84.68 shares of Preferred Stock (assuming conversion of all such 84.68
shares of Preferred Stock into Common Stock) represent approximately 0.03% of
the total number of outstanding shares of Common Stock as reported in the
Quarterly Report.  PEP has sole voting and sole dispositive power with respect
to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 1,856.25
shares of Preferred Stock, Brookside beneficially owns 106,071 shares of Common
Stock.  Such 1,856.25 shares of Preferred Stock (assuming conversion of all such
1,856.25 shares of Preferred Stock into Common Stock) represent approximately
0.72% of the total number of outstanding shares of Common Stock as reported in
the Quarterly Report.  Brookside has sole voting and sole dispositive power with
respect to such shares.

     Brookside Investors, as the sole general partner of Brookside, may be
deemed to share voting and dispositive power with respect to 106,071 shares of
Common Stock currently held by Brookside (assuming conversion of all of the
shares of Preferred held by Brookside into Common Stock), which represents
approximately 0.72% of the total number of outstanding shares of Common Stock as
reported in the Proxy Statement.  The filing of this Statement by Brookside
Investors shall not be construed as an admission that Brookside Investors is,
for the purpose of Section 13(d) of the Exchange Act, the beneficial owner of
such shares held by Brookside.

     Brookside Inc., as the sole general partner of Brookside Investors, may be
deemed to share voting and dispositive power with respect to 106,071 shares of
Common Stock currently held by Brookside (assuming conversion of all
of the shares of Preferred Stock  held by Brookside Investors into Common
Stock), which represents approximately 0.72% of the total number of outstanding
shares of Common Stock as reported in the Quarterly Report.  The filing of this
Statement by Brookside Inc. shall not be construed as an admission that
Brookside Inc. is, for the purpose of Section 13(d) of the Exchange Act, the
beneficial owner of such shares held by Brookside.

                              Page 30 of 39 Pages
<PAGE>

     As of the date hereof, by virtue of its beneficial ownership of 1,856.25
shares of Preferred Stock, Sankaty beneficially owns 106,071 shares of Common
Stock.  Such 1,856.25 shares of Preferred Stock (assuming conversion of all such
1,856.25 shares of Preferred Stock into Common Stock) represent approximately
0.72% of the total number of outstanding shares of Common Stock as reported in
the Quarterly Report.  Sankaty has sole voting and sole dispositive power with
respect to such shares.

     Sankaty LLC, as the sole general partner of Sankaty, may be deemed to share
voting and dispositive power with respect to 106,071 shares of Common Stock
currently held by Sankaty (assuming conversion of all of the shares of Preferred
Stock held by Sankaty into Common Stock), which represents approximately 0.72%
of the total number of outstanding shares of Common Stock as reported in the
Quarterly Report.  The filing of this Statement by Sankaty LLC shall not be
construed as an admission that Sankaty LLC is, for the purpose of Section 13(d)
of the Exchange Act, the beneficial owner of such shares held by Sankaty.

     Sankaty Ltd., as the sole general partner of Sankaty LLC, may be deemed to
share voting and dispositive power with respect to 106,071 shares of Common
Stock currently held by Sankaty (assuming conversion of all of the Preferred
shares held by Sankaty into Common Stock), which represents approximately
0.72% of the total number of outstanding shares of Common Stock as reported in
the Quarterly Report.  The filing of this Statement by Sankaty Ltd. shall not be
construed as an admission that Sankaty Ltd. is, for the purpose of Section 13(d)
of the Exchange Act, the beneficial owner of such shares held by Sankaty.

     Mr. Romney may be deemed to share voting and dispositive power with respect
to (i) 452,803 shares of Common Stock currently held by BCIPT II, BCIPT II-B,
BCIP II, BCIP II-B and BCIP II-C (assuming the conversion of all shares of
Preferred Stock held by BCIPT II, BCIPT II-B, BCIP II, BCIP II-B and BCIP II-C
into Common Stock), in his capacity as sole shareholder of BCI; (ii) 1,451,643
shares of Common Stock currently held by BCF VI (assuming conversion of all
shares of the Preferred Stock held by BCF VI into Common Stock), in his capacity
as sole shareholder of BCI VI Inc.; (iii) 106,071 shares of Common Stock
currently held by Brookside (assuming conversion of all shares of Preferred
Stock held by Brookside into Common Stock), in his capacity as sole shareholder
of Brookside, Inc.; and (iv) 106,071 shares of Common Stock currently held by
Sankaty (assuming conversion of all Preferred Stock held by Sankaty into Common
Stock), in his capacity as sole shareholder of Sankaty Ltd.

     As of the date hereof, by virtue of its beneficial ownership of 36,538.68
shares of Preferred Stock, MDCP beneficially owns 2,087,925 shares of Common
Stock.  Such 36,538.68 shares of Preferred Stock (assuming conversion of all
such 36,538.68 shares of Preferred Stock into Common Stock) represent
approximately 12.48% of the total number of outstanding shares of Common Stock
as reported in the Quarterly Report.  MDCP has sole voting and sole dispositive
power with respect to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 811.32
shares of Preferred Stock, MDSE beneficially owns 46,361 shares of Common Stock.
Such 811.32 shares of Preferred Stock (assuming conversion of all such 811.32
shares of Preferred Stock into Common Stock) represent approximately 0.24% of
the total number of outstanding shares of Common Stock as reported in the
Quarterly Report.  MDSE has sole voting and sole dispositive power with respect
to such shares.

     As of the date hereof, by virtue of its beneficial ownership of 150 shares
of Preferred Stock, SAF beneficially owns 8,571 shares of Common Stock.  Such
150 shares of Preferred Stock (assuming conversion of all such 150 shares of
Preferred Stock into Common Stock) represent

                              Page 31 of 39 Pages
<PAGE>

approximately 0.05% of the total number of outstanding shares of Common Stock as
reported in the Proxy Statement. SAF has sole voting and sole dispositive power
with respect to such shares.

     MDP III, as the sole general partner of MDCP, MDSE and SAF, may be deemed
to share voting and dispositive power with respect to 2,142,857 shares of Common
Stock currently held by MDCP, MDSE and SAF (assuming conversion of all of the
shares of Preferred Stock held by MDCP, MDSE and SAF into Common Stock), which
represents approximately 12.48% of the total number of outstanding shares of
Common Stock as reported in the Quarterly Report.  The filing of this Statement
by MDP III shall not be construed as an admission that MDP III is, for the
purpose of Section 13(d) of the Exchange Act, the beneficial owner of such
shares held by MDCP, MDSE and SAF.

     MDP, as the sole general partner of MDP III, may be deemed to share voting
and dispositive power with respect to 2,142,857 shares of Common Stock currently
held by MDCP, MDSE and SAF (assuming conversion of all of the shares of
Preferred Stock held by MDCP, MDSE and SAF into Common Stock), which represents
approximately 12.48% of the total number of outstanding shares of Common Stock
as reported in the Quarterly Report. The filing of this Statement by MDP shall
not be construed as an admission that MDP is, for the purpose of Section 13(d)
of the Exchange Act, the beneficial owner of such shares held by MDCP, MDSE and
SAF.

     The Bain Investors and the MDP Investors have agreed to vote their shares
of Preferred Stock in accordance with the terms of an Inter-Investor Agreement.
A copy of the Inter-Investor Agreement is attached hereto as Exhibit F and is
incorporated by reference herein.  Each of the Investors have agreed between
themselves to exercise the powers and rights conferred upon them by the Purchase
Agreement, Registration Rights Agreement and Corporate Governance Agreement in
accordance with the provisions of the Inter-Investor Agreement.  The following
summary is qualified in its entirety by reference to the detailed  provisions of
the Inter-Investor Agreement.

Inter-Investor Agreement
- ------------------------

Exercise of Rights.  The terms of the Inter-Investor Agreement set forth the
manner in which the Investors shall have the right to elect individuals to the
board of the Issuer. In addition, the terms of the Inter-Investor Agreement set
forth the manner in which the Investors collectively shall exercise all other
rights and remedies (including the exercise of registration rights) that are set
forth in the Purchase Agreement, Registration Rights Agreement, Corporate
Governance Agreement and Certificate of Designation.

Transfer of Shares.  Generally, holders of Preferred Stock are restricted until
November 12, 2002 from transferring any of the Preferred Stock or the underlying
Common Stock, unless such transfer is pursuant to the terms of a redemption
provision under the Certificate of Designation, pursuant to a registered
securities offering under the Securities Act of 1933 as amended, or pursuant to
a public sale. In addition, where any holder of Preferred Stock (the "First
Shareholder") contemplates a transfer of its shares and the effect of such
transfer would dispossess the other holders of Preferred Stock (the "Other
Shareholders") of existing rights under the Purchase Agreement, Registration
Rights Agreement, Corporate Governance Agreement or Certificate of Designation,
including the right to elect two directors to the Issuer's board of directors,
the First Shareholder shall

                              Page 32 of 39 Pages
<PAGE>

notify the Other Shareholders of the terms and conditions of its proposed
transaction and the Other Shareholders shall have the opportunity to negotiate
the purchase of all of the Preferred Shares of the First Shareholder.

     As a result of the terms of the Inter-Investor Agreement, the Bain
Investors and the MDP Investors may be deemed to constitute a "group" for
purposes of Section 13(d)(3) of the Exchange Act.  Accordingly, by virtue of
their beneficial ownership of 75,000 shares of Preferred Stock, the Investors
beneficially own 4,285,714 shares of Common Stock.  Such 75,000 shares of
Preferred Stock (assuming conversion of all such 75,000 shares of Preferred
Stock into Common Stock) represent approximately 22.64% of the total number of
outstanding shares of Common Stock as represented in the Quarterly Report.  The
filing of this Statement by the Investors shall not be construed as an admission
that the Investors are, for the purpose of Section 13(d) of the Exchange Act,
the beneficial owners of the shares held by the Investors.

     Neither the filing of this statement nor any of its contents shall be
deemed to constitute an admission that any Reporting Person is the beneficial
owner of any Common Stock referred to in this statement for the purpose of
Section 13(d) of the Act or for any other purpose, and such beneficial ownership
is expressly disclaimed.

     Item 6.  Contracts, Arrangements, Understandings of Relationships With
Respect to Securities of the Issuer.

     Reference is made to the responses to Items 2, 3, 4 and 5 of this Statement
which is incorporated by reference in response to this Item.

     Item 7.  Material to be filed as Exhibits.

     Exhibit A --   Joint Filing Agreement.

     Exhibit B --   Amended and Restated Series A Convertible Preferred Stock
                    Purchase Agreement, dated as of September 26, 1999, by and
                    between the Issuer. and each of the Investors, incorporated
                    by reference to Exhibit 10.1 of the Issuer's Current Report
                    on Form 8-K, filed with the Commission on October 15,1999.

     Exhibit C --   Certificate of Designation relating to the Preferred Stock,
                    incorporated by reference to Exhibit A to Exhibit 10.1 of
                    the Issuer's Current Report on Form 8-K, filed with the
                    Commission on October 15,1999.

     Exhibit D --   Registration Rights Agreement, dated November 12, 1999, by
                    and between the Issuer and each of the Investors.

     Exhibit E --   Corporate Governance Agreement, dated November 12, 1999, by
                    and between the Issuer and each Investors, incorporated by
                    reference to Exhibit C to Exhibit 10.1 of the Issuer's
                    Current Report on Form 8-K, filed with the Commission on
                    October 15,1999.

     Exhibit F --   Inter-Investor Agreement, dated November 11, 1999, by and
                    between the MDP Investors and Bain Investors.

     Exhibit G --   Power of Attorney.

                              Page 33 of 39 Pages
<PAGE>

                                   SIGNATURES
                                   ----------

     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: November 19, 1999         BAIN CAPITAL FUND VI, L.P.
                                By:   Bain Capital Partners VI, L.P.,
                                       its General Partner

                                By:   Bain Capital Investors VI, Inc.,
                                       its General Partner

                                By:   /s/ Dennis M. Myers
                                   --------------------------------------
                                Name:  Dennis M. Myers
                                Title: Attorney-in-Fact



Date: November 19, 1999         BAIN CAPITAL PARTNERS VI, L.P.
                                By:   Bain Capital Investors VI, Inc.,
                                       its General Partner


                                 By:   /s/ Dennis M. Myers
                                    --------------------------------------
                                 Name:  Dennis M. Myers
                                 Title: Attorney-in-Fact



Date November 19, 1999           BAIN CAPITAL INVESTORS VI, INC.


                                By:   /s/ Dennis M. Myers
                                   ----------------------------------------
                                Name:  Dennis M. Myers
                                Title: Attorney-in-Fact



Date: November 19, 1999         SANKATY HIGH YIELD ASSET PARTNERS, L.P.
                                By:   Sankaty High Yield Asset Investors, LLC,
                                       its General Partner

                                By:   Sankaty High Yield Asset Investors, Ltd.,
                                       its Managing Member

                                By:   /s/ Dennis M. Myers
                                   ----------------------------------------
                                Name:  Dennis M. Myers
                                Title: Attorney-in-Fact

                              Page 34 of 39 Pages
<PAGE>

Date: November 19, 1999       SANKATY HIGH YIELD ASSET INVESTORS, LLC
                              By:   Sankaty High Yield Asset Investors, Ltd.,
                                     its Managing Member

                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact


Date November 19, 1999        SANKATY HIGH YIELD ASSET INVESTORS, LTD.


                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact


Date: November 19, 1999       BROOKSIDE CAPITAL PARTNERS FUND, L.P.
                              By:   Brookside Capital Investors, L.P.,
                                     its General Partner

                              By:   Brookside Capital Investors, Inc.,
                                     its General Partner

                              By:    /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:   Dennis M. Myers
                              Title:  Attorney-in-Fact


Date: November 19, 1999       BROOKSIDE CAPITAL INVESTORS, L.P.
                              By:   Brookside Capital Investors, Inc.,
                                     its General Partner

                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact


Date: November 19, 1999       BROOKSIDE CAPITAL INVESTORS, INC.

                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact

                              Page 35 of 39 Pages
<PAGE>

Date: November 19, 1999       BCIP ASSOCIATES II
                              BCIP TRUST ASSOCIATES II
                              BCIP ASSOCIATES II-B
                              BCIP TRUST ASSOCIATES II-B
                              BCIP ASSOCIATES II-C
                              By:   Bain Capital, Inc.,
                                     their Managing General Partner

                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact



Date: November 19, 1999       BAIN CAPITAL, INC.


                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact



Date: November 19, 1999       PEP INVESTMENTS PTY LIMITED
                              By:   Bain Capital, Inc.,
                                     its Attorney-in-Fact

                              By:   /s/ Dennis M. Myers
                                 ----------------------------------------
                              Name:  Dennis M. Myers
                              Title: Attorney-in-Fact


Date: November 19, 1999             /s/ W. Mitt Romney
                              -------------------------------------------
                              W. Mitt Romney



Date: November 19, 1999       MADISON DEARBORN CAPITAL PARTNERS III, L.P.
                              By:   Madison Dearborn Partners III, L.P.,
                                     its General Partner

                              By:   Madison Dearborn Partners, LLC,
                                     its General Partner


                              By:   /s/ Thomas R. Reusche
                                 ----------------------------------------
                              Name:  Thomas R. Reusche
                              Title:

                              Page 36 of 39 Pages
<PAGE>

Date: November 19, 1999       MADISON DEARBORN SPECIALTY EQUITY III, L.P.
                              By:   Madison Dearborn Partners III, L.P.,
                                     its General Partner

                              By:   Madison Dearborn Partners, LLC,
                                     its General Partner


                              By:   /s/ Thomas R. Reusche
                                 ----------------------------------------
                              Name:  Thomas R. Reusche
                              Title: Managing Director



Date: November 19, 1999       SPECIAL ADVISORS FUND I, LLC
                              By:   Madison Dearborn Partners III, L.P.,
                                     its Manager

                              By:   Madison Dearborn Partners, LLC,
                                     its General Partner


                              By:   /s/ Thomas R. Reusche
                                 ----------------------------------------
                              Name:  Thomas R. Reusche
                              Title: Managing Director



Date: November 19, 1999       MADISON DEARBORN PARTNERS III, L.P.
                              By:   Madison Dearborn Partners, LLC,
                                     its General Partner


                              By:   /s/ Thomas R. Reusche
                                 ----------------------------------------
                              Name:  Thomas R. Reusche
                              Title: Managing Director



Date: November 19, 1999       MADISON DEARBORN PARTNERS, LLC


                              By:   /s/ Thomas R. Reusche
                                 ----------------------------------------
                              Name:  Thomas R. Reusche
                              Title: Managing Director

                              Page 37 of 39 Pages
<PAGE>

                                   SCHEDULE A

     Bain Capital Partners VI, L.P. ("BCP VI") is the sole general partner of
Bain Capital Fund VI, L.P. ("BCF VI"). Bain Capital Investors VI, Inc. ("BCI VI
Inc.") is the sole general partner of BCP VI. W. Mitt Romney ("Mr. Romney") is
the sole stockholder, sole director, Chief Executive Officer, Managing Director
and President of BCI VI Inc. In addition, the following persons serve as
directors or executive officers for BCI VI Inc.: Joshua Bekenstein (Treasurer
and Managing Director), Edward Conard (Managing Director), John P. Connaughton
(Managing Director), David Dominik (Managing Director), Paul B. Edgerley
(Managing Director), Robert C. Gay (Vice Chairman and Managing Director),
Michael A. Krupka (Managing Director), Jonathan S. Lavine (Managing Director),
Ronald P. Mika (Managing Director), Mark E. Nunnelly (Managing Director),
Stephen G. Pagliuca (Secretary and Managing Director) and Mr. Robert F. White
(Managing Director).

     Bain Capital, Inc. ("BCI") is the managing general partner for BCIP
Associates II ("BCIP II"), BCIP Associates II-B ("BCIP II-B") BCIP Associates
II-C ("BCIP II-C"), BCIP Trust Associates II ("BCIPT II") and BCIP Trust
Associates II-B ("BCIPT II-B"). Mr. Romney is the sole stockholder, sole
director, Chief Executive Officer, Managing Director, Chairman and President of
BCI. In addition, the following persons serve as directors or executive officers
for BCI: Joshua Bekenstein (Treasurer and Managing Director), Edward Conard
(Managing Director), John P. Connaughton (Managing Director), David Dominik
(Managing Director), Paul B. Edgerley (Managing Director), Robert C. Gay (Vice
Chairman and Managing Director), Michael A. Krupka (Managing Director), Jonathan
S. Lavine (Managing Director), Ronald P. Mika (Managing Director), Mark E.
Nunnelly (Managing Director), Stephen G. Pagliuca (Secretary and Managing
Director), Robert F. White (Managing Director), and Domenic J. Ferrante
(Managing Director).

     Brookside Capital Investors, L.P. ("Brookside Investors") is the sole
general partner of Brookside Capital Partners Fund, L.P. ("Brookside"). The
following persons serve as Managing Directors of Brookside: Joshua Bekenstein,
Roy Edgar Barkeman, III, David Dominick, Paul B. Edgerley, Dominic J. Ferrante
and Mr. Romney. Brookside Capital Investors, Inc. ("Brookside Inc.") is the sole
general partner of Brookside Investors. Mr. Romney is the sole stockholder, sole
director, Chief Executive Officer, Chairman and President of Brookside Inc. In
addition, Michele D. May serves as Vice President and Secretary of Brookside
Inc.

     Sankaty High Yield Asset Investors, LLC ("Sankaty Investors") is the sole
general partner of Sankaty High Yield Asset Partners, L.P. ("Sankaty").  Sankaty
High Yield Asset Investors, Ltd. ("Sankaty Ltd.") is the Managing Member of
Sankaty Investors.  The following persons are executive officers or directors
for Sankaty: Joshua Bekenstein (Managing Director); Jonathan S. Lavine (Managing
Director); W. Mitt Romney (Managing Director); Diane J. Exter (Vice President);
Michele May (Vice President); and H. Bruce Murray (Secretary). Mr. Romney is the
sole shareholder, a director and President of Sankaty Ltd. In addition, the
following persons serve as executive officers or directors for Sankaty Ltd.:
Michele May (Vice President, Assistant Secretary, Director), H. Bruce Murray
(Secretary), Ann Marie Viglione (a director).

                              Page 38 of 39 Pages
<PAGE>

                                   SCHEDULE B

     Madison Dearborn Partners III, L.P. ("MDP III") is the sole general partner
of Madison Dearborn Capital Partners III, L.P. ("MDCP III"), Madison Dearborn
Special Equity III, L.P. ("MDSE III") and Special Advisors Fund I LLC, L.P.
("SAF").  Madison Dearborn Partners, LLC ("MDP") is the sole general partner of
MDP III.  The directors and executive officers of MDP are as follows:  John A.
Canning, Jr. (Director, executive officer and President); Paul J. Finnegan
(Managing Director); William J. Hunckler, III (Managing Director); Samuel M.
Mencoff (Managing Director); Paul R. Wood (Managing Director); Justin S. Huscher
(Managing Director); Benjamin D. Chereskin (Managing Director); Thomas R.
Reusche (Managing Director); James N. Perry, Jr. (Managing Director); Nicholas
W. Alexos (Managing Director); Timothy P. Sullivan (Managing Director); Gary J.
Little (Managing Director); David F. Mosher (Managing Director); and Robin P.
Selati (Managing Director).

                              Page 39 of 39 Pages

<PAGE>

                                                                       Exhibit A

                             JOINT FILING AGREEMENT


     Each of the undersigned hereby acknowledges and agrees, in compliance
with the provisions of Rule 13d-1(k)(1) promulgated under the Securities
Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement
is attached as an Exhibit (the "Schedule 13D"), and any amendments thereto, will
be filed with the Securities and Exchange Commission jointly on behalf of the
undersigned.

     This Agreement may be executed in one or more counterparts.



Date: November 19, 1999         BAIN CAPITAL FUND VI, L.P.
                                By:  Bain Capital Partners VI, L.P.,
                                       its General Partner

                                By:  Bain Capital Investors VI, Inc.,
                                       its General Partner

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date: November 19, 1999         BAIN CAPITAL PARTNERS VI, L.P.
                                By:  Bain Capital Investors VI, Inc.,
                                       its General Partner


                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date November 19, 1999          BAIN CAPITAL INVESTORS VI, INC.


                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact
<PAGE>

Date: November 19, 1999         SANKATY HIGH YIELD ASSET PARTNERS, L.P.
                                By:  Sankaty High Yield Asset Investors, LLC,
                                       its General Partner

                                By:   Sankaty High Yield Asset Investors, Ltd.,
                                        its Managing Member

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date: November 19, 1999         SANKATY HIGH YIELD ASSET INVESTORS, LLC
                                By:  Sankaty High Yield Asset Investors, Ltd.,
                                       its Managing Member

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date November 19, 1999          SANKATY HIGH YIELD ASSET INVESTORS, LTD.


                                By:  /s/ Dennis M. Myers
                                       -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date: November 19, 1999         BROOKSIDE CAPITAL PARTNERS FUND, L.P.
                                By:  Brookside Capital Investors, L.P.,
                                       its General Partner

                                By:  Brookside Capital Investors, Inc.,
                                       its General Partner

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact

                                       2
<PAGE>

Date: November 19, 1999         BROOKSIDE CAPITAL INVESTORS, L.P.
                                By:  Brookside Capital Investors, Inc.,
                                       its General Partner

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date: November 19, 1999         BROOKSIDE CAPITAL INVESTORS, INC.

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Date: November 19, 1999         BCIP ASSOCIATES II
                                BCIP TRUST ASSOCIATES II
                                BCIP ASSOCIATES II-B
                                BCIP TRUST ASSOCIATES II-B
                                BCIP ASSOCIATES II-C
                                By:   Bain Capital, Inc.,
                                        their Managing General Partner

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



Dated: November 19, 1999        BAIN CAPITAL, INC.


                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact

                                       3
<PAGE>

Date: November 19, 1999         PEP INVESTMENTS PTY LIMITED
                                By:   Bain Capital, Inc.,
                                        its Attorney-in-Fact

                                By:  /s/ Dennis M. Myers
                                     -------------------
                                Name:    Dennis M. Myers
                                Title:   Attorney-in-Fact



                                     /s/ W. Mitt Romney
                                -----------------------
Date: November 19, 1999         W. Mitt Romney


Date: November 19, 1999         MADISON DEARBORN CAPITAL PARTNERS III, L.P.
                                By:   Madison Dearborn Partners III, L.P.,
                                        its General Partner

                                By:   Madison Dearborn Partners, LLC,
                                        its General Partner


                                By:  /s/ Thomas R. Reusche
                                     ---------------------
                                Name:    Thomas R. Reusche
                                Title:   Managing Director



Date: November 19, 1999         MADISON DEARBORN SPECIALTY EQUITY III, L.P.
                                By:   Madison Dearborn Partners III, L.P.,
                                        its General Partner

                                By:   Madison Dearborn Partners, LLC,
                                        its General Partner


                                By:  /s/ Thomas R. Reusche
                                     ---------------------
                                Name:    Thomas R. Reusche
                                Title:   Managing Director

                                       4
<PAGE>

Date: November 19, 1999         SPECIAL ADVISORS FUND I, LLC
                                By:   Madison Dearborn Partners III, L.P.,
                                        its Manager

                                By:   Madison Dearborn Partners, LLC,
                                        its General Partner


                                By:  /s/ Thomas R. Reusche
                                     ---------------------
                                Name:    Thomas R. Reusche
                                Title:   Managing Director



Date: November 19, 1999         MADISON DEARBORN PARTNERS III, L.P.
                                By:   Madison Dearborn Partners, LLC,
                                        its General Partner


                                By:  /s/ Thomas R. Reusche
                                     ---------------------
                                Name:    Thomas R. Reusche
                                Title:   Managing Director



Date: November 19, 1999         MADISON DEARBORN PARTNERS, LLC


                                By:  /s/ Thomas R. Reusche
                                     ---------------------
                                Name:    Thomas R. Reusche
                                Title:   Managing Director

                                       5

<PAGE>

                                                                       Exhibit D

                         Registration Rights Agreement

   This Agreement is entered into as of November 12, 1999 by Stericycle, Inc., a
Delaware corporation (the "Company"), and the Persons whose names are set forth
on the attached Schedule I (collectively, the "Investors").

   A.  The Company and the Investors are concurrently closing an Amended and
Restated Series A Convertible Preferred Stock Purchase Agreement, dated
September 26, 1999 (the "Purchase Agreement"), pursuant to the terms and
conditions of which the Company is issuing and selling to the Investors, and the
Investors are purchasing from the Company, 75,000 of Series A Convertible
Preferred Stock (the "Preferred Shares").

   B.  The Parties' execution and delivery of this Agreement is a condition of
their respective obligations to close the Purchase Agreement.

   The Parties agree as follows:

   Capitalized terms which are used in this Agreement without being defined have
the same meanings that they are given in the Purchase Agreement. Certain
capitalized terms used in this Agreement are defined in the attached Schedule A.

   1.  Demand Registrations.

   1A. General.  On or at any time after the first anniversary of Closing,
holders of a majority of the Registrable Securities then outstanding may request
registration under the Securities Act of all or any portion of their Registrable
Securities in connection with a public offering of those securities. All
registrations requested pursuant to this Section 1 are referred to in this
Agreement as "Demand Registrations." Holders of Registrable Securities shall be
limited to three Demand Registrations.  All Demand Registrations (other than a
Demand Registration that consists of a Shelf Registration Statement (as defined
below)) shall be a firm commitment underwritten offering.  In regard to Demand
Registrations:

       (1) Each request for a Demand Registration shall specify the approximate
   number of Registrable Securities requested to be registered. Within 10 days
   after receipt of any request for a Demand Registration, the Company shall
   give written notice of the requested registration to all other holders of
   Registrable Securities, and shall include in the registration all Registrable
   Securities with respect to which the Company has received written requests
   for inclusion within 15 days after receipt of the Company's notice.

       (2) A Demand Registration shall not be counted as one of the three
   permitted Demand Registrations unless (i) it has become effective and (ii)
   the Persons making the request are able to register and sell at least 75% of
   the Registrable Securities requested to be included in the registration.

       (3) The Company shall pay all Registration Expenses in connection with
   any Demand Registration whether or not it is counted as one of the three
   permitted Demand Registrations; provided, however, that the holders of
   Registrable Securities included in the third Demand Registration shall pay
   all Registration Expenses (other than as set forth in Section 5A) in
   connection with such Demand Registration if such Demand Registration consists
   of the Shelf Registration Statement; and provided further that, if the second
   Demand Registration consisted of a Shelf Registration Statement, the holders
   of Registrable Securities included in the third Demand Registration shall
   reimburse the Company for all Registration Expenses (other than as set forth
   in Section 5A) in connection with the previous Shelf Registration Statement
   (i.e., the second Demand Registration).

       (4) Demand Registrations shall be on Form S-2 or Form S-3 or any similar
   short-form registration statement, if available.

       (5) The Company shall have the right to select the managing underwriter
   in connection with any firm commitment underwritten offering, subject to the
   approval of a majority of the holders of the Registrable Securities
<PAGE>

   requesting registration, and holders of a majority of the Registrable
   Securities requesting registration shall have the right to select a co-
   managing underwriter, subject to the Company's approval.

   1B. Limit on Registrable Securities.  In the case of any firm commitment
underwritten offering, if the managing underwriters advise the Company in
writing that in their opinion the number of Registrable Securities requested to
be included in the offering exceeds the number of Registrable Securities that
can be sold without adversely affecting the marketability of the offering, the
Company shall include in the registration the number of Registrable Securities
requested to be included which in the opinion of the underwriters can be sold
without adversely affecting the marketability of the offering, pro rata among
the respective holders on the basis of the number of Registrable Securities
owned by each holder.

   1C. Restrictions.  The Company shall not be obligated to effect any Demand
Registration within 180 days after the effective date of a previous Demand
Registration or a previous registration in which the holders of Registrable
Securities were given piggyback rights pursuant to Section 2. The Company may
postpone for up to 180 days the filing or the effectiveness of a registration
statement for a Demand Registration if the Company's board of directors in good
faith reasonably determines that the Demand Registration would reasonably be
expected to have a material adverse effect on any proposal or plan by the
Company to engage in any acquisition of assets (other than in the ordinary
course of business) or any merger, consolidation, tender offer, reorganization
or similar transaction. In this event, the holders of Registrable Securities
initially requesting the Demand Registration shall be entitled to withdraw their
request. If their request is withdrawn, the Demand Registration shall not count
as one of the three permitted Demand Registrations, and the Company shall pay
all Registration Expenses in connection with the registration. The Company may
delay a Demand Registration pursuant to this Section 1C only once in any 12-
month period.

   1D. Shelf Registration.  At the request of the holders of a majority of the
Registrable Securities then outstanding, one Demand Registration (other than the
first Demand Registration) may consist of a shelf registration statement (as
amended and supplemented from time to time, the "Shelf Registration Statement")
in accordance with Rule 415 under the Securities Act (or any similar rule that
may be adopted by the Securities and Exchange Commission).  In the event of any
such request, the Company shall promptly prepare and file the Shelf Registration
Statement and cause it to be declared effective as soon as reasonably
practicable (and in any event within 90 days) after such request and will keep
such Shelf Registration Statement continuously effective and in compliance with
the Securities Act and usable for resale or other disposition of such
Registrable Securities, subject to clauses (1) and (2) below, for the period
(the "Effective Period") commencing on the date on which the Securities and
Exchange Commission declares such Shelf Registration Statement effective and
ending on the earlier of (x) the first anniversary date of the date such Shelf
Registration Statement is declared effective (or, in the event the Company has
exercised its right under clause (1) below to refuse use of the Shelf
Registration for a Delay Period, the eighteen-month anniversary date of the date
such Shelf Registration Statement is declared effective) and (y) the first date
on which there are no longer any Registrable Securities.  The Effective Period
shall be automatically extended by the number of days that the second Delay
Period, if any, is in effect during the final thirty days of the Effective
Period prior to any such extension.  In regard to the Shelf Registration
Statement:

       (1) The Company shall have the right to refuse use of an effective Shelf
   Registration Statement (a "Delay Period") for a length of time not to exceed
   45 days if the Company's board of directors reasonably determines, with
   respect to the advisability (as determined in good faith) of deferring public
   disclosure of material corporate developments, that use of the Shelf
   Registration Statement and the disclosure required to be made therein would
   not be in the best interests of the Company at such time; provided, however,
   that there shall not be more than two Delay Periods during the Effective
   Period.  The Company shall use reasonable efforts to minimize the length of
   any Delay Period and shall provide prompt written notice to the holders of
   Registrable Securities of the beginning and end of each Delay Period.

       (2) The Company shall promptly notify the holders of Registrable
   Securities, at any time when a prospectus relating to the sale of the
   Registrable Securities is required by law to be delivered in connection with
   sales by an underwriter or dealer, of the occurrence of any event requiring
   the preparation of a supplement or amendment to such prospectus so that, as
   thereafter delivered to the purchasers of such Registrable Securities, such
   prospectus will not contain an untrue statement of a material fact or omit to
   state any material fact required to be stated therein or necessary to make
   the statements therein, in the light of the circumstances under which they
   were made, not misleading and shall (subject to any Delay Period) promptly
   make available to holders of Registrable Securities and to the underwriters
   any such supplement or amendment.  Holders of Registrable Securities agree
   that, upon receipt

                                      -2-
<PAGE>

   of any notice from the Company of the occurrence of any event of the kind
   described in the preceding sentence, holders of Registrable Securities will
   forthwith discontinue the offer and sale of Registrable Securities pursuant
   to the Shelf Registration Statement until receipt by holders of Registrable
   Securities and the underwriters of the copies of such supplemented or amended
   prospectus.

   2.  Piggyback Registrations.

   2A. Right To Piggyback.  Whenever the Company proposes to register any of its
securities under the Securities Act (other than pursuant to a Demand
Registration) and the registration form to be used may be used for the
registration of Registrable Securities (a "Piggyback Registration"), the Company
shall give prompt written notice to all holders of Registrable Securities of its
intention to effect such a registration and shall include in the registration
all Registrable Securities with respect to which the Company has received
written requests for inclusion within 20 days after receipt of the Company's
notice. Holders of Registrable Securities shall be entitled to unlimited
Piggyback Registrations for their Registrable Securities.

   2B. Piggyback Expenses.  The Registration Expenses of the holders of
Registrable Securities shall be paid by the Company in all Piggyback
Registrations.

   2C. Priority on Primary Registrations.  If a Piggyback Registration is an
underwritten primary registration on behalf of the Company, and the managing
underwriters advise the Company in writing that in their opinion the number of
securities requested to be included in the registration exceeds the number that
can be sold without adversely affecting the marketability of the offering, the
Company shall include in the registration (i) first, the securities that the
Company proposes to sell, (ii) second, the Registrable Securities requested to
be included in the registration, pro rata among the holders of the Registrable
Securities on the basis of the number of Registrable Securities owned by each
holder, and (iii) third, any other securities requested to be included in the
registration.

   2D. Priority on Secondary Registrations.  If a Piggyback Registration is an
underwritten secondary registration on behalf of holders of the Company's
securities, and the managing underwriters advise the Company in writing that in
their opinion the number of securities requested to be included in the
registration exceeds the number that can be sold without adversely affecting the
marketability of the offering, the Company shall include in the registration (i)
first, the Registrable Securities requested to be included in the registration,
pro rata among the holders of the Registrable Securities on the basis of the
number of Registrable Securities owned by each holder, and (ii) second, the
other securities requested to be included in the registration.

   2E. Other Registrations.  If the Company has previously filed a registration
statement with respect to Registrable Securities pursuant to Section 1 or
pursuant to this Section 2, and if the previous registration has not been
withdrawn or abandoned, the Company shall not file or cause to be effected any
other registration of any of its equity securities or securities convertible or
exchangeable into or exercisable for its equity securities under the Securities
Act (except on Form S-8 or any successor form), whether on its own behalf or at
the request of any holder or holders of its securities, until a period of at
least 180 days has elapsed from the effective date of the previous registration.

   3.  Holdback Agreements.

   3A. Holders of Registrable Securities.  Each holder of Registrable Securities
shall not effect any public sale or distribution (including sales pursuant to
Rule 144) of equity securities of the Company, or any securities convertible
into or exchangeable or exercisable for equity securities of the Company, during
the 30 days prior to and the 120-day period (or such lesser period as the
managing underwriters may agree to) beginning on the effective date of any
Demand Registration or any underwritten Piggyback Registration in which
Registrable Securities are included (except as part of such Demand Registration
or underwritten Piggyback Registration), unless the underwriters managing the
offering otherwise agree.

   3B. Company.  The Company shall not effect any public sale or distribution of
its equity securities, or any securities convertible into or exchangeable or
exercisable for such securities, during such period prior to and following the
effective date of any Demand Registration or any underwritten Piggyback
Registration as the Company and the underwriters managing the offering may
agree.

                                      -3-
<PAGE>

   4.  Registration Procedures.

   Whenever holders of Registrable Securities have requested that any
Registrable Securities be registered pursuant to this Agreement, the Company
shall use its reasonable best efforts to effect the registration and the sale of
the Registrable Securities in accordance with the intended method of
disposition, In this regard, the Company shall:

       (1) prepare and file with the Securities and Exchange Commission a
   registration statement with respect to such Registrable Securities and use
   its reasonable best efforts to cause the registration statement to become
   effective;

       (2) notify each holder of Registrable Securities of the effectiveness of
   each registration statement filed under this Agreement and prepare and file
   with the Securities and Exchange Commission any amendments and supplements to
   the registration statement and the prospectus that may be necessary to keep
   the registration statement effective for a period of not less than 180 days
   and comply with the provisions of the Securities Act with respect to the
   disposition of all securities covered by the registration statement during
   this 180-day period in accordance with the intended methods of disposition by
   the sellers described in the registration statement;

       (3) furnish to each seller of Registrable Securities the number of copies
   of the registration statement, each amendment and supplement, the prospectus
   included in the registration statement ( including each preliminary
   prospectus) and any other documents that each seller may reasonably request
   in order to facilitate the disposition of the seller's Registrable
   Securities;

       (4) use its best efforts to register or qualify the Registrable
   Securities under such other securities or blue sky laws of such jurisdictions
   as any seller reasonably requests and do any and all other acts and things
   which may be reasonably necessary or advisable to enable the seller to
   consummate the disposition in those jurisdictions of the Registrable
   Securities owned by the seller (but the Company shall not be required to (i)
   qualify generally to do business in any jurisdiction where it would not
   otherwise be required to qualify but for this subparagraph, (ii) subject
   itself to taxation in any such jurisdiction or (iii) consent to general
   service of process in any such jurisdiction);

       (5) notify each seller of Registrable Securities, at any time when a
   prospectus relating to those securities is required to be delivered under the
   Securities Act, of the happening of any event as a result of which the
   prospectus included in the registration statement contains an untrue
   statement of a material fact or omits any fact necessary to make the
   statements in the prospectus not misleading; and, at the request of any
   seller, the Company shall prepare a supplement or amendment to the prospectus
   so that, when delivered to purchasers of the Registrable Securities, the
   prospectus, as supplemented or amended, does not contain an untrue statement
   of a material fact or omit to state any fact necessary to make the statements
   in the prospectus not misleading;

       (6) cause all Registrable Securities to be quoted on the Nasdaq National
   Market System;

       (7) provide a transfer agent and registrar for all such Registrable
   Securities not later than the effective date of the registration statement;

       (8) enter into such customary agreements (including underwriting
   agreements in customary form) and take all other actions that holders of a
   majority of the Registrable Securities being sold or the underwriters, if
   any, reasonably request in order to expedite or facilitate the disposition of
   the Registrable Securities;

       (9) make available for inspection by any seller of Registrable
   Securities, any underwriter participating in any disposition pursuant to the
   registration statement and any attorney, accountant or other agent retained
   by any seller or underwriter, all financial and other records, pertinent
   corporate documents and properties of the Company, and cause the Company's
   officers, employees and independent accountants to supply all information
   reasonably requested by any such seller, underwriter, attorney, accountant or
   agent in connection with the registration statement;

       (10) otherwise use its best efforts to comply with all applicable rules
   and regulations of the Securities and Exchange Commission, and make available
   to its security holders, as soon as reasonably practicable, an earnings
   statement covering the period of at least twelve months beginning with the
   first day of the Company's first full

                                      -4-
<PAGE>

   calendar quarter after the effective date of the registration statement,
   which earnings statement shall satisfy the provisions of Section 11(a) of the
   Securities Act and Rule 158; and

       (11) in the event of the issuance of any stop order suspending the
   effectiveness of a registration statement, or of any order suspending or
   preventing the use of any related prospectus or suspending the qualification
   of any Common Stock included in the registration statement for sale in any
   jurisdiction, use its best efforts promptly to obtain the withdrawal of such
   order.

   5.  Registration Expenses.

   5A. Payment by Company.  All Registration Expenses shall be borne as provided
in this Agreement, except that the Company shall, in any event, pay its internal
expenses (including all salaries and expenses of its officers and employees
performing legal or accounting duties), the expense of any annual audit or
quarterly review and the expenses and fees for listing the securities to be
registered on the Nasdaq National Market System.

   5B. Fees of Counsel.  In connection with each Demand Registration and each
Piggyback Registration, the Company shall reimburse the holders of Registrable
Securities included in the registration for the reasonable fees and
disbursements of one counsel chosen by the holders of a majority of the
Registrable Securities included in the registration and for the reasonable fees
of one special counsel retained by the holders of Registrable Securities to
render any required legal opinions in connection with an underwritten
registration which the first counsel is unable or unwilling to render.

   5C. Payment by Holders.  To the extent that Registration Expenses are not
required to be paid by the Company, each holder of securities included in any
registration under this Agreement shall pay those Registration Expenses
allocable to the registration of the holder's securities so included, and any
Registration Expenses not so allocable shall be borne by all sellers of
securities included in the registration in proportion to the aggregate selling
price of the securities to be so registered.

   6.  Indemnification.

   6A. Indemnification by Company.  The Company agrees to indemnify, to the
extent permitted by law, each holder of Registrable Securities, its officers and
directors and each Person who controls such holder (within the meaning of the
Securities Act) against all losses, claims, damages, liabilities and expenses
caused by any Violation, except insofar as the Violation is caused by or
contained in any information furnished in writing to the Company by the holder
expressly for use in a registration statement, prospectus, amendment, supplement
or related document or is caused by the holder's failure to deliver a copy of
the registration statement or prospectus or any amendment or supplements after
the Company has furnished the holder with a sufficient number of copies. In
connection with an underwritten offering, the Company shall indemnify such
underwriters, their officers and directors and each Person who controls such
underwriters (within the meaning of the Securities Act) to the same extent
provided in this Section 6(a) with respect to the indemnification of holders of
Registrable Securities.

   6B. Indemnification by Holder.  In connection with any registration statement
in which a holder of Registrable Securities is participating, the holder shall
furnish to the Company in writing such information and affidavits as the Company
reasonably requests for use in connection with the registration statement or
prospectus and, to the extent permitted by law, shall indemnify the Company, its
directors and officers and each Person who controls the Company (within the
meaning of the Securities Act) against any losses, claims, damages, liabilities
and expenses resulting from any Violation to the extent that the Violation is
caused by or contained in any information furnished in writing to the Company by
the holder expressly for use in a registration statement, prospectus, amendment,
supplement or related document. This obligation to indemnify shall be
individual, not joint and several, for each holder and shall be limited to the
net amount of proceeds received by the holder from the sale of Registrable
Securities pursuant to the registration statement.

   6C. Procedures.  Any Person entitled to indemnification under this Section 6
shall give prompt written notice to the indemnifying party of any claim with
respect to which the Person seeks indemnification (provided that the failure to
give prompt notice shall not impair any Person's right to indemnification to the
extent that the failure has not prejudiced the indemnifying party). Unless in
the indemnified party's reasonable judgment a conflict of interest between the
indemnified and indemnifying parties may exist with respect to the claim for
indemnification, the indemnified party shall

                                      -5-
<PAGE>

permit the indemnifying party to assume the defense of the claim with counsel
reasonably satisfactory to the indemnified party. If the defense of the claim is
assumed by the indemnifying party, the indemnifying party shall not be subject
to any liability for any settlement made by the indemnified party without its
consent (but the indemnifying party shall not unreasonably withhold its
consent). An indemnifying party who is not entitled to, or who elects not to,
assume the defense of a claim for indemnification shall not be obligated to pay
the fees and expenses of more than one counsel for all parties indemnified by
the indemnifying party with respect to the claim, unless in the reasonable
judgment of any indemnified party a conflict of interest may exist between the
indemnified party and any of the other indemnified parties with respect to the
claim.

   6D. Survival.  The indemnification under this Section 6 shall remain in full
force and effect regardless of any investigation made by or on behalf of the
indemnified party or any officer, director or controlling Person of the
indemnified party and shall survive the transfer of securities. The Company also
agrees to make such provisions as are reasonably requested by any indemnified
party for contribution to the indemnified party in the event that the Company's
indemnification is unavailable for any reason.

   7.  Participation in Underwritten Registration.

   No Person may participate in any underwritten registration pursuant to this
Agreement unless the Person (i) agrees to sell securities on the basis provided
in the underwriting arrangements and (ii) completes and executes all
questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents required under the terms of the underwriting arrangements. In
any event, however, no holder of Registrable Securities included in any
underwritten registration shall be required to make any representations or
warranties to the Company or the underwriters (other than representations and
warranties regarding the holder and the holder's intended method of
distribution) or to undertake any indemnification obligations to the Company or
the underwriters except as otherwise provided in Section 6.

   8.  Miscellaneous.

   8A. No Inconsistent Agreements.  The Company shall not enter into any
agreement with respect to its securities which is inconsistent with or violates
the rights granted to the holders of Registrable Securities in this Agreement.
Without limiting the generality of the foregoing, until the initial holders of
Registrable Securities cease to hold at least 25% of the number of Registrable
Securities initially acquired by such holders, the Company shall not grant to
any Person the right to request the Company to register any equity securities of
the Company, or any securities convertible or exchangeable into or exercisable
for such securities, without the prior written consent of the holders of a
majority of the Registrable Securities. The Company may grant rights to other
Persons to participate in Piggyback Registrations, however, so long as such
rights are subordinate to the rights of the holders of Registrable Securities
with respect to such Piggyback Registrations as set forth in Sections 2C and 2D
of this Agreement. The Company represents and warrants that, except as set forth
on the attached Schedule II, the Company is not a party to or otherwise subject
to any other agreement granting registration rights to any other Person with
respect to securities of the Company.

   8B. Notices.  All Notices under this Agreement shall be in writing and sent
by certified or registered mail, overnight messenger service, telecopier or
personal delivery, as follows:

<TABLE>
<CAPTION>
       <S>  <C>                                         <C>
       (a)  if to Stericycle, to:                       Stericycle, Inc.
                                                        28161 North Keith Drive
                                                        Lake Forest, Illinois 60045
                                                        Attention:      Mr. Mark C. Miller
                                                                        President and Chief Executive Officer
                                                        Telecopier:     (847) 367-9493
</TABLE>

                                      -6-
<PAGE>

<TABLE>
<CAPTION>
       <S>  <C>                                         <C>
            with a required copy to:                    Johnson and Colmar
                                                        300 South Wacker Drive
                                                        Suite 1000
                                                        Chicago, Illinois 60606
                                                        Attention:  Craig P. Colmar, Esq.
                                                        Telecopier:  (312) 922-9283


       (b)  if to the Bain Investors, in care of:       Bain Capital, Inc.
                                                        Two Copley Place
                                                        Boston, Massachusetts 02116
                                                        Attention:        Mr. Stephen G. Pagliuca
                                                                          Mr. Robert Gay
                                                                          Mr. John P. Connaughton
                                                                          Mr. Joe Pretlow
                                                        Telecopier:       (617) 572-3274

            with a required copy to:                    Kirkland & Ellis
                                                        200 East Randolph Drive
                                                        Chicago, Illinois 60601
                                                        Attention:        Jeffrey C. Hammes, P.C.
                                                        Telecopier: (312) 861-2200

       (c)  if to the MDP Investors, in care of:        Madison Dearborn Partners, Inc.
                                                        Three First National Plaza
                                                        Suite 3800
                                                        Chicago, Illinois 60602
                                                        Attention:        Mr. Thomas R. Reusche
                                                        Telecopier:       (312) 895-1001

            with a required copy to:                    Kirkland & Ellis
                                                        200 East Randolph Drive
                                                        Chicago, Illinois 60601
                                                        Attention:        Michael H. Kerr, P.C.
                                                        Telecopier:       (312) 861-2200
</TABLE>

All Notices sent by certified or registered mail shall be considered to have
been given three business days after being deposited in the mail. All Notices
sent by overnight courier service, telecopier or personal delivery shall be
considered to have been given when actually received by the intended recipient.
A Party may change its address for purposes of this Agreement by Notice in
accordance with this Section 8B.

   8C. Waiver.  The rights and remedies of the Company and holders of
Registrable Securities are cumulative and not alternative. Neither the failure
nor any delay by the Company or any holder of Registrable Securities in
exercising any right, power or privilege under this Agreement shall operate as a
waiver of that right, power or privilege, and no single or partial exercise of
any right, power or privilege shall preclude any other or further exercise of
that right, power or privilege or the exercise of any other right, power or
privilege. All waivers shall be in writing signed by the party to be charged
with the waiver, and no waiver that may be given by a party shall be applicable
except in the specific instance for which it is given.

   8D. Amendment.  This Agreement may not be amended except by a written
agreement signed by the Company and holders of a majority of the Registrable
Securities.

   8E. Severability.  If any provision of this Agreement is held invalid or
unenforceable by a court of competent jurisdiction, the other provisions of this
Agreement shall remain in full force and effect. Any provision of this Agreement

                                      -7-
<PAGE>

which is held invalid or unenforceable only in part shall remain in full force
and effect to the extent not held invalid or unenforceable.

   8F. Captions.  The captions of sections of this Agreement are for convenience
only and shall not affect this the construction or interpretation of this
Agreement.

   8G. Construction.  All references in this Agreement to "Section" or
"Sections" refer to the corresponding section or sections of this Agreement. All
words used in this Agreement shall be construed to be of the appropriate gender
or number as the context requires. Unless otherwise expressly provided, the word
"including" does not limit the preceding words or terms.

   8H. Counterparts.  This Agreement may be executed in one or more
counterparts, each of which shall be considered an original copy of this
Agreement and all of which, when taken together, shall be considered to
constitute one and the same agreement.

   8I. Governing Law.  This Agreement shall be governed by the Laws of the State
of Illinois without regard to conflicts of laws principles.

   8J. Binding Effect.  This Agreement shall apply to, be binding in all
respects upon and inure to the benefit of Parties and their respective
successors and permitted assigns.

                                      -8-
<PAGE>

       In witness, the Parties have executed this Agreement.


                                 STERICYCLE, INC.


                                 By: /s/ Frank ten Brink
                                    --------------------------------------------
                                     Name: Frank ten Brink
                                     Title: Chief Financial Officer


                                 BAIN CAPITAL FUND VI, L.P.


                                 By:   Bain Capital Partners VI, L.P.
                                 Its.  General Partner

                                 By:   Bain Capital Investors VI, Inc.
                                 Its:  General Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 BCIP ASSOCIATES II


                                 By:   Bain Capital, Inc.
                                 Its:  Managing Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 BCIP ASSOCIATES II-B


                                 By:   Bain Capital, Inc.
                                 Its:  Managing Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director
<PAGE>

                                 BCIP ASSOCIATES II-C


                                 By:   Bain Capital, Inc.
                                 Its:  Managing Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 BCIP TRUST ASSOCIATES II


                                 By:   Bain Capital, Inc.
                                 Its:  Managing Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 BCIP TRUST ASSOCIATES II-B


                                 By:   Bain Capital, Inc.
                                 Its:  Managing Partner


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 SANKATY HIGH YIELD ASSET PARTNERS, L.P.


                                 By: /s/ Joshua Bekenstein
                                    --------------------------------------------
                                     A Managing Director
<PAGE>

                                 PEP INVESTMENTS PTY. LIMITED


                                 By:   Bain Capital, Inc.
                                 Its:  Attorney-in-Fact


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 BROOKSIDE CAPITAL PARTNERS FUND, L.P.


                                 By: /s/ John P. Connaughton
                                    --------------------------------------------
                                     A Managing Director


                                 RANDOLPH STREET PARTNERS II



                                 By  /s/ Matthew E. Steinmetz
                                    --------------------------------------------
                                     A General Partner
<PAGE>


                                 MADISON DEARBORN CAPITAL PARTNERS III, L.P.


                                 By:   Madison Dearborn Partners III, L.P.
                                 Its:  General Partner

                                 By:   Madison Dearborn Partners, LLC
                                 Its:  General Partner


                                 By: /s/ Thomas R. Reusche
                                    --------------------------------------------
                                     A Managing Director


                                 MADISON DEARBORN SPECIAL EQUITY III, L.P.


                                 By:   Madison Dearborn Partners III, L.P.
                                 Its:  General Partner

                                 By:   Madison Dearborn Partners, LLC
                                 Its:  General Partner


                                 By: /s/ Thomas R. Reusche
                                    --------------------------------------------
                                     A Managing Director


                                 SPECIAL ADVISORS FUND I, LLC


                                 By:   Madison Dearborn Partners III, L.P.
                                 Its:  Manager

                                 By:   Madison Dearborn Partners, LLC
                                 Its:  General Partner


                                 By: /s/ Thomas R. Reusche
                                    --------------------------------------------
                                     A Managing Director
<PAGE>

                                   SCHEDULE I


                                   Investors
<TABLE>
<CAPTION>

Name and Address                                Number of Shares Purchased            Purchase Price
<S>                                             <C>                                   <C>

Bain Capital Fund VI, L.P.                               25,403.76                    $25,403,759.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

BCIP Associates II                                        4,491.38                    $ 4,491,378.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

BCIP Associates II-B                                        615.62                    $   615,619.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

BCIP Associates II-C                                      1,319.76                    $ 1,319,760.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

Brookside Capital Partners Fund, L.P.                     1,856.25                    $ 1,856,250.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

BCIP Trust Associates II                                  1,291.22                    $ 1,291,222.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

BCIP Trust Associates II-B                                  206.08                    $   206,084.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

Sankaty High Yield Asset Partners, L.P.                   1,856.25                    $ 1,856,250.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

PEP Investments Pty. Limited                                 84.68                    $    84,678.00
c/o Bain Capital, Inc.
Two Copley Place
Boston, Massachusetts 02116

Randolph Street Partners II                                 375.00                    $   375,000.00
200 East Randolph Drive
Chicago, Illinois 60601
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
<S>                                             <C>                                   <C>
Madison Dearborn Capital Partners III, L.P.              36,538.68                    $36,538,683.00
c/o Madison Dearborn Partners, Inc.
Three First National Plaza
Suite 3800
Chicago, Illinois 60602

Madison Dearborn Special Equity III, L.P.                   811.32                    $   811,317.00
c/o Madison Dearborn Partners, Inc.
Three First National Plaza
Suite 3800
Chicago, Illinois 60602

Special Advisors Fund I, LLC                                150.00                    $   150,000.00
c/o Madison Dearborn Partners, Inc.
Three First National Plaza
Suite 3800
Chicago, Illinois 60602
</TABLE>
<PAGE>

                                   SCHEDULE A


                                 Defined Terms



   Exchange Act means the Securities Exchange Act of 1934, as amended.

   Person means an individual, partnership, corporation, limited liability
company, association, trust, unincorporated organization, or other entity.

   Registrable Securities means (i) any shares of Common Stock issued or
issuable upon conversion of the Preferred Shares and (ii) any shares of Common
Stock issued or issuable (A) as a dividend or distribution in respect of, or (B)
in exchange for or replacement of, or (C) upon conversion or exercise of any
warrant or other security issued or issuable as a dividend or distribution in
respect of or in exchange for or replacement of, the Preferred Shares and any
shares of Common Stock issued or issuable upon conversion of the Preferred
Shares. Any Registrable Securities shall cease to be Registrable Securities if
and when they (or, in respect of issuable but not yet issued Registrable
Securities, the underlying Preferred Stock or Common Stock) cease to be held by
an Investor or a Permitted Transferee (as "Permitted Transferee" is defined in
the Corporate Governance Agreement). In addition, in the case of a distribution
of Registrable Securities by an Investor to a partner of the Investor (and thus
a Permitted Transferee), the distributed securities shall cease to be
Registrable Securities when so distributed if, prior to or concurrently with the
distribution, the Investor has notified the Company in writing of the Investor's
election to terminate the status of the distributed securities as Registrable
Securities.

   Registration Expenses means all expenses incident to the Company's
performance of or compliance with this Agreement, including all registration and
filing fees, fees and expenses of compliance with securities or blue sky laws,
printing expenses, messenger and delivery expenses, fees and disbursements of
custodians, and fees and disbursements of counsel for the Company and all
independent certified public accountants, underwriters (excluding discounts,
commissions and underwriters' counsel fees) and other Persons retained by the
Company.

   Securities Act means the Securities Act of 1933, as amended.

   Violation means any of the following statements, omissions or violations: (i)
any untrue statement or alleged untrue statement of a material fact contained in
a registration statement under this Agreement, including any related preliminary
or final prospectus, any amendment or supplement, or any document filed under
state securities or "blue sky" laws, (ii) the omission or alleged omission to
state a material fact required to be stated in any such registration statement,
prospectus, amendment, supplement or document or necessary to make the
statements in any such registration statement, prospectus, amendment, supplement
or document not misleading, or (iii) any violation or alleged violation by the
Company of the Securities Act, the Exchange Act, any state securities law, or
any rule or regulation promulgated under the Securities Act, the Exchange Act or
any state securities law.

<PAGE>

                                                                       Exhibit F

                            INTER-INVESTOR AGREEMENT
                            ------------------------


          THIS AGREEMENT is made as of November 11, 1999, by and among each of
the Persons listed on Schedule I attached hereto (the "Bain Stockholders") and
each Person who may from time to time become a party hereto as a Bain
Stockholder and execute a joinder to this Agreement to such effect, and each of
the Persons listed on Schedule II attached hereto (the "MDP Stockholders") and
each Person who may from time to time become a party hereto as an MDP
Stockholder and execute a joinder to this Agreement to such effect.  The Bain
Stockholders and the MDP Stockholders are collectively referred to as the
"Stockholders" and individually as a "Stockholder."  Capitalized terms used and
not otherwise defined herein are defined in Section 11 of this Agreement or, if
not there defined, shall have the meanings ascribed to such terms in the
Purchase Agreement (as defined below).

          WHEREAS, the Bain Stockholders and the MDP Stockholders are parties to
an Amended and Restated Series A Convertible Preferred Stock Purchase Agreement,
dated as of September 26, 1999 (the "Purchase Agreement"), pursuant to which the
Investors have agreed, subject to certain conditions, to purchase certain shares
of Series A Convertible Preferred Stock, par value $0.01 per share (the
"Preferred Stock"), of Stericycle, Inc., a Delaware corporation (the "Company");

          WHEREAS, upon the closing of the transactions contemplated by the
Purchase Agreement (the "Closing"), each of the Bain Stockholders and the MDP
Stockholders shall execute and deliver a Registration Rights Agreement (the
"Registration Agreement") and a Corporate Governance Agreement (the "Corporate
Governance Agreement"), and the Company shall have filed a certificate of
designation (the "Certificate of Designation") with the Secretary of State of
the State of Delaware, setting forth the powers, preferences, rights,
qualifications, limitations and restrictions of the Preferred Stock;

          WHEREAS, the Bain Stockholders and the MDP Stockholders are referred
to collectively in the Purchase Agreement, the Registration Agreement and the
Corporate Governance Agreement as "Investors" and possess powers and rights
thereunder and under the Certificate of Designation, and are subject to certain
limitations and restrictions thereunder and under the Certificate of
Incorporation, in each case in their capacities as Investors, holders of
Preferred Investor Shares or holders of Investor Shares;

          WHEREAS, the Bain Stockholders and the MDP Stockholders desire to
establish an agreement between themselves setting forth certain matters,
including without limitation the manner in which certain powers and rights under
the Purchase Agreement, the Registration Agreement, the Corporate Governance
Agreement and the Certificate of Designation shall be exercised by the Bain
Stockholders and the MDP Stockholders collectively;
<PAGE>

          NOW, THEREFORE, the Bain Stockholders and the MDP Stockholders agree
as follows:

          1.   Representations and Warranties; Voting Agreements. Each Bain
Stockholder represents and warrants to the MDP Stockholders, and each MDP
Stockholder represents and warrants to the Bain Stockholders, that (i) this
Agreement has been duly authorized, executed and delivered by such Stockholder
and constitutes the valid and binding obligation of such Stockholder,
enforceable in accordance with its terms, and (ii) such Stockholder has not
granted and is not a party to any proxy, voting trust or other agreement which
is inconsistent with, conflicts with or violates any provision of this
Agreement.  For so long as any provision of the Agreement remains in effect, no
holder of Preferred Investor Shares or Investor Shares shall grant any proxy or
become party to any voting trust or other agreement which is inconsistent with,
conflicts with or violates any provision of this Agreement.

          2.   Board of Directors.

          (a) Pursuant to the Certificate of Designation and the Corporate
Governance Agreement, the Stockholders shall have the right (i) under certain
circumstances, to elect (or cause to be elected or appointed) two directors to
the Company's board of directors (the "Board") and one director to the
committees of the Board, and (ii) under other circumstances, to elect (or cause
to be elected or appointed) one director to the Board and to the committees of
the Board;

          (b) From and after the date of this Agreement, each holder of
Preferred Investor Shares or Investor Shares shall vote all of his, her or its
Preferred Investor Shares and Investor Shares and any other voting securities of
the Company over which such holder has voting control and shall take all other
necessary or desirable actions within his, her or its control (whether in his,
her or its capacity as a stockholder, Investor, director, member of a committee
of the Board, holder of Preferred Investor Shares, holder of Investor Shares or
otherwise, and including without limitation attendance at meetings in person or
by proxy for purposes of obtaining a quorum, execution of written consents in
lieu of meetings and calling special meetings of the board and of stockholders),
so that:

               (i) during such times as the Stockholders have the right to elect
     (or cause to be elected or appointed) two directors to the Board (and
     neither the Bain Stockholders, as a group, nor the MDP Stockholders, as a
     group, (each, a "Group") hold less than one-third of the number of Investor
     Shares then held by the other Group of Stockholders):

               (A) one representative designated by the holders of a majority of
     the Bain Investor Shares; and

               (B) one representative designated by the holders of a
     majority of the MDP Investor Shares;

                                      -2-
<PAGE>

               (ii  during such times as the Stockholders have the right to
     elect (or cause to be elected or appointed) two directors to the Board (and
     either Group of Stockholders holds less than one-third of the number of
     Investor Shares then held by the other Group of Stockholders), two
     representatives designated by the Group of Stockholders holding the greater
     number of Investor Shares;

               (ii  during such times as the Stockholders have the right to
     elect (or cause to be elected or appointed) a single director to the Board,
     one representative designated by the Group of Stockholders which then holds
     a majority of the Investor Shares (it being understood that if the Group of
     Bain Stockholders and the Group of MDP Stockholders hold exactly the same
     number of Investor Shares, then the director shall be designated by the
     holders of a majority of the Bain Investor Shares);

               (iv  the removal from the Board (with or without cause) of any
     representative designated pursuant to Sections 2(a)(i), (ii) or (iii) shall
     be at the written request of the Group of Stockholders then having the
     right to designate the director pursuant to such Section, but only upon
     such written request and under no other circumstances;

               (v) any authorized seats on the Board for whom a director is not
     designated pursuant to Sections 2(a)(i), (ii) or (iii) or which becomes
     vacant shall remain vacant until a director is so designated (unless and
     until (A) the Board or the Company or its stockholders (other than the
     Stockholders) take any action to fill or otherwise remove such vacancy, in
     which case the Group of Stockholders not having the right under this
     Agreement to designate a representative to fill such vacancy may act to
     fill such vacancy with its own representative if such Group reasonably
     determines that such action is necessary to protect the board rights of the
     Stockholders under the Certificate of Designation or the Corporate
     Governance Agreement (or any other contractual rights of the Stockholders)
     or (B) the Group of Stockholders having the right under this Agreement to
     designate a representative to fill such vacancy, fails to so designate a
     representative within 30 days following such vacancy).

          (c) Subject to any contrary determination by the Board and its members
(other than the members designated by the Stockholders), (i) each committee of
the Board for which the Company is obligated or elects to include one director
designated by the Stockholders shall include the director designated by the
Group of Stockholders that designated such director to the Board, in
circumstances in which the Stockholders have the right to designate only one
director to the Board, and (ii) in circumstances in which the Stockholders have
the right to designate two directors to the Board, the number of committee seats
shall be distributed between such two Board members proportionately based upon
the number of Investor Shares then held by each applicable Group of Stockholders
(with the particularities of committee assignments being mutually agreed upon in
good faith by the two Groups of Stockholders).

          (d) During any such time as the holders of Preferred Investor Shares
are entitled pursuant to Section 7 of the Certificate of Designation to elect a
majority of the Board, each holder of Preferred Investor Shares or Investor
Shares shall vote all of his, her or its Preferred Investor

                                      -3-
<PAGE>

Shares, Investor Shares and any other voting securities of the Company over
which such holder has voting control and shall take all other necessary or
desirable actions within his, her or its control (whether in his, her or its
capacity as a stockholder, Investor, director, member of a committee of the
Board, holder of Preferred Investor Shares, holder of Investor Shares or
otherwise, and including without limitation attendance at meetings in person or
by proxy for purposes of obtaining a quorum, execution of written consents in
lieu of meetings and calling special meetings of the board and of stockholders)
so that the size of the Board shall be increased as contemplated by Section 7 of
the Certificate of Designation and that the additional directors to be
designated to the Board shall be allocated to (and therefore designated by) the
Group of Bain Stockholders and the Group of MDP Stockholders proportionately
based upon the number of Investor Shares then held by each such Group (and, in
the case of an odd number of additional directors and equal ownership of
Investor Shares, the odd director shall be a Person mutually acceptable to both
the holders of a majority of the Bain Investor Shares and the holders of a
majority of the MDP Investor Shares).

          (e) The provisions of this Section 2 shall terminate at such time as
the Stockholders cease to have any right under the Certificate of Designation
and the Corporate Governance Agreement to elect (or cause to be elected or
appointed) any director or directors to the Board.

          3.   Exercise of Powers, Rights and Remedies.

          (a) Each of the Purchase Agreement, the Registration Agreement, the
Corporate Governance Agreement and the Certificate of Designation provides the
Stockholders collectively with various powers, rights and remedies.  The
Stockholders agree that all such powers, rights and remedies (including without
limitation those set forth in the definition of Applicable Powers set forth
below, but excluding any such powers, rights and remedies for which the manner
of exercise of such powers, rights or remedies by the Stockholders is expressly
provided for elsewhere in this Agreement (e.g., the manner of exercise of demand
registration rights, which are the subject of Section 4)) shall be exercised by
the Stockholders at the written request of the holders of at least 60% of the
Investor Shares then held by the Stockholders collectively, but only upon such
written request and under no other circumstances.  Each holder of Preferred
Investor Shares or Investor Shares agrees to vote all of his, her or its
Preferred Investor Shares, Investor Shares and any other voting securities of
the Company over which such holder has voting control and shall take all other
necessary or desirable actions within his, her or its control (whether in his,
her or its capacity as a stockholder, Investor, holder of Preferred Investor
Shares, holder of Investor Shares or otherwise) to cause to be exercised any
Applicable Power that has been subject to a request made pursuant to the
preceding sentence and to refrain from taking any action or omitting to take any
action if such action or omission could reasonably be expected to prevent or
conflict with the exercise of such Applicable Power.  Each holder of Preferred
Investor Shares or Investor Shares also agrees that such holder shall not take
any action within his, her or its control (whether in his, her or its capacity
as a stockholder, Investor, holder of Preferred Investor Shares, holder of
Investor Shares or otherwise) to exercise (or demand or attempt the exercise of)
any Applicable Power except pursuant to this Section 3.

                                      -4-
<PAGE>

          (b) Each of the Stockholders acknowledges and agrees that pursuant to
certain provisions of the Transaction Agreements and the Certificate of
Designation (e.g., the exercise of preemptive rights pursuant to Section 5G of
the Purchase Agreement and the exercise of piggyback registration rights
pursuant to Section 2 of the Registration Agreement) each Stockholder
individually has certain powers, rights or remedies that may be exercised
individually by such Stockholder.  This Section 3 shall not restrict any
Stockholder from exercising any power, right or remedy of such Stockholder, so
long as it is reasonably apparent from the applicable Transaction Agreement or
the Certificate of Designation that such power, right or remedy was granted to
Stockholders in their individual capacities as an Investor or a holder of
Preferred Investor Shares or Investor Shares and not to the Stockholders
collectively.

          (c) Waivers of powers, rights and remedies of Stockholders under the
Transaction Agreements and the Certificate of Designation shall be made in the
same manner as required for the exercise of such powers, rights and remedies as
set forth in Sections 3(a) and 3(b).  For example, any individual Stockholder
may waive any right granted to such Stockholder in his, her or its individual
capacity (e.g., a waiver of preemptive rights pursuant to Section 5G of the
Purchase Agreement or a waiver of piggyback registration rights pursuant to
Section 2 of the Registration Agreement), but waivers of any rights granted to
the Stockholders collectively shall be subject to the approval of holders of 60%
of the Investor Shares then held by the Stockholders collectively.

          4.   Manner of Exercise of Registration Rights.

          (a) The Registration Agreement provides the Stockholders collectively
with certain demand registration rights (namely, the right to demand two firm
commitment underwritten offerings (collectively, the "Underwritten
Registrations") and one shelf registration (the "Shelf Registration")), and the
Stockholders agree that such demand registration rights shall be exercised only
in accordance with this Section 4 and under no other circumstances.  Each holder
of Preferred Investor Shares or Investor Shares agrees to vote all of his, her
or its Preferred Investor Shares, Investor Shares and any other voting
securities of the Company over which such holder has voting control and shall
take all other necessary or desirable actions within his, her or its control
(whether in his, her or its capacity as a stockholder, Investor, holder of
Preferred Investor Shares, holder of Investor Shares or otherwise) to cause to
be exercised any demand registration that is approved pursuant to this Section 4
and to refrain from taking any action or omitting to take any action if such
action or omission could reasonably be expected to prevent or conflict with the
exercise of such demand registration.  Each holder of Investor Shares also
agrees that such holder shall not take any action within his, her or its control
(whether in his, her or its capacity as a stockholder, Investor, holder of
Preferred Investor Shares, holder of Investor Shares or otherwise) to exercise
(or demand or attempt the exercise of) any demand registration except pursuant
to this Section 4.

          (b) From and after the Closing and until the third anniversary of the
Closing Date, demand registration rights for the Underwritten Offerings
(including without limitation the approval of a managing underwriter and the
selection of a co-managing underwriter) shall be exercised with the approval of
the holders of a majority of the Bain Investor Shares and the approval

                                      -5-
<PAGE>

of the holders of a majority of the MDP Investor Shares but only with both such
approvals and under no other circumstances.

          (c) From and after the third anniversary of the Closing Date, the
first demand for an Underwritten Registration (including without limitation the
approval of a managing underwriter and the selection of a co-managing
underwriter) to be exercised on or following such date (the "First Demand
Registration") may be exercised upon the request of either the holders of a
majority of the Bain Investor Shares or the holders of a majority of the MDP
Investor Shares (the Group making such request being referred to herein as the
"First Demand Group" and the other Group being referred to herein as the "Second
Demand Group")).  All Stockholders may participate in the First Demand
Registration, but if the managing underwriters advise the Company in writing
that in their opinion the number of Registrable Securities (as defined in the
Registration Agreement) requested to be included in the offering exceeds the
number of Registrable Securities that can be sold without adversely affecting
the marketability of the offering, the Registrable Securities that are sold in
the offering shall be allocated pro rata between the Groups of Stockholders on
the basis of the number of Registrable Securities then held by each Group.

          (d) After the First Demand Registration, the next exercise of a demand
for an Underwritten Registration (including without limitation the approval of a
managing underwriter and the selection of a co-managing underwriter) (a "Second
Demand Registration") shall be made upon the request of the Second Demand Group
but only upon such request and under no other circumstances.  All Stockholders
may participate in the Second Demand Registration, but, if the managing
underwriters advise the Company in writing that in their opinion the number of
Registrable Securities requested to be included in the offering exceeds the
number of Registrable Securities that can be sold without adversely affecting
the marketability of the offering, the Second Demand Group shall have first
priority in connection with the Second Demand Registration (up to the number of
Registrable Securities that the First Demand Group sold in the First Demand
Registration (the "Priority Shares")), and to the extent there are available
shares in excess of the number of Priority Shares, such available shares shall
be allocated pro rata between the Groups of Stockholders on the basis of the
number of Registrable Securities then held by each Group.

          (e) The demand registration right for the Shelf Registration shall be
exercised with the approval of the holders of a majority of the Bain Investor
Shares and the approval of the holders of a majority of the MDP Investor Shares
but only with both such approvals and under no other circumstances; provided,
however, that from and after the fifth anniversary of the Closing Date, the
First Demand Group (if and only if the Second Demand Group has not previously
exercised a demand for an Underwritten Registration that has been completed and
the First Demand Group has previously done so) may exercise the demand
registration right for the Shelf Registration, in which case all Stockholders
shall be permitted to participate.

          (f) No demand registration that is the subject of a delay or deferral
by the Company (pursuant to the Company's rights under the Registration
Agreement or otherwise) shall constitute the exercise of a demand registration
for purposes of this Agreement unless and until such demand registration is
actually completed, nor shall the exercise of a demand registration that does

                                      -6-
<PAGE>

not ultimately constitute a Demand Registration (as defined in the Registration
Agreement) (e.g., because the Stockholders are not able to sell at least 75% of
the Registrable Securities requested to be included in the registration) be
considered either the First Demand or the Second Demand for purposes of this
Agreement, and if, in any such demand registration, the managing underwriters
advise the Company in writing that in their opinion the number of Registrable
Securities requested to be included in the offering exceeds the number of
Registrable Securities that can be sold without adversely affecting the
marketability of the offering, the Registrable Securities that are sold in the
offering shall be allocated pro rata between the Groups of Stockholders on the
basis of the number of Registrable Securities then held by each Group.

          (g) To the extent that (pursuant to the Registration Agreement or
otherwise) the Stockholders are responsible for the costs of any demand
registrations, the costs shall be allocated pro rata among (and promptly paid
by) the Stockholders based upon the number of Investor Shares sold by each such
Stockholder in the offering (or, in the event the offering is withdrawn or
otherwise terminated, based upon the number of Investor Shares requested by each
such Stockholder to be included in the offering).

          (h) The provisions of this Section 4 shall terminate at such time as
either Group of Stockholders holds less than one-third of the number of Investor
Shares then held by the other Group of Stockholders.

          5.   Restrictions on Transfer of Stockholder Shares.

          (a) Transfer of Stockholder Shares.  No Stockholder shall sell,
transfer, pledge or otherwise dispose of (whether with or without consideration
and whether voluntarily or involuntarily or by operation of law) (a "Transfer")
(other than to a Permitted Transferee) any interest in his, her or its Preferred
Investor Shares or Investor Shares, other than (i) a Transfer pursuant to and in
accordance with any redemption provisions of the Certificate of Designation,
(ii) a Transfer pursuant to an offering of Common Stock which is the subject of
an effective registration statement under the Securities Act of 1933, as amended
(or any similar successor statute) (a "Registered Offering") or pursuant to a
Public Sale (each, a "Permitted Transfer"), or (iii) a Transfer on or after the
third anniversary of the Closing Date, in each case subject to and, if
applicable, in accordance with Section 5(b) of this Agreement.

          (b) Right of First Offer. In the event that any Stockholder (the
"First Offer Stockholder") contemplates Transferring Preferred Investor Shares
and/or Investor Shares (other than pursuant to and in accordance with any
redemption provisions of the Certificate of Designation) and, after giving
effect to such contemplated Transfer (either alone or together with all other
contemplated Transfers to occur contemporaneously), the Stockholders
collectively would cease to have a power or right pursuant to any Transaction
Agreement or the Certificate of Designation (e.g., (i) in the case of Preferred
Investor Shares, the Stockholders collectively would cease to hold (A) any
Preferred Investor Shares or (B) at least 25% of the Preferred Investor Shares
initially acquired by the Investors, or (ii) in the case of Investor Shares, the
Stockholders collectively would cease to hold (A) at least 50% of the Investor
Shares initially acquired by the Investors, (B) at least 25% of the

                                      -7-
<PAGE>

Investor Shares initially acquired by the Investors or (C) at least 20% of the
Investor Shares initially acquired by the Investors) (it being understood that
if the First Offer Stockholder obtains a waiver or agreement by the Company to
the effect that any such power or right shall survive for the other Stockholders
as though the contemplated Transfer had never occurred then this Section 4(b)
shall no longer be applicable with respect to such contemplated Transfer), the
First Offer Stockholder shall deliver a written notice (a "Offer Notice") to the
other Stockholders that includes the fact that such power or right would cease
to be held by the Stockholders and the terms and conditions upon which the First
Offer Stockholder contemplates consummating the proposed Transfer (including,
but not limited to, an estimate of the amount and type of cash and other
consideration). Any one or more of the Other Stockholders shall have the
opportunity to negotiate the purchase of all (but not less than all) of the
Preferred Investor Shares or Investor Shares specified in the First Offer Notice
during the 14 days after the delivery of the Offer Notice. If no one or more
other Stockholders have elected to negotiate a purchase all of the shares
contemplated to be Transferred within such 14-day period, the First Offer
Stockholder may thereafter Transfer such shares to any Person. Notwithstanding
anything herein to the contrary, this Section 5(b) shall not apply with respect
to any Transfer of Preferred Investor Shares or Investor Shares by any Group of
Stockholders so long as the number of Investor Shares to be Transferred
(together with all other Investor Shares that have previously been Transferred
by such Group of Stockholders) does not exceed the aggregate number of Investor
Shares that have previously been Transferred by the other Group of
Stockholders).

          (c) Permitted Transfers.  The restrictions set forth in Section 5(a)
shall not apply with respect to any Transfer of Permitted Investor Shares or
Investor Shares by any Stockholder to any other Stockholder or to an Affiliate
of any Stockholder or pursuant to applicable laws of descent and distribution or
among such Stockholder's Family Group; provided, however, that the restrictions
contained in this Section 5 shall continue to be applicable to the Preferred
Investor Shares and Investor Shares after any Transfer under this Section 5(c);
and provided further that the transferees of such Preferred Investor Shares and
Investor Shares shall have agreed in writing to be bound by the provisions of
this Agreement affecting the shares so transferred and to have executed and
delivered a joinder to this Agreement (it being understood that if the
transferee is a Bain Stockholder or an Affiliate of any Bain Stockholder that
such transferee shall thereafter be considered a Bain Stockholder for purposes
of this Agreement and that if the transferee is an MDP Stockholder or an
Affiliate of any MDP Stockholder that such transferee shall thereafter be
considered an MDP Stockholder for purposes of this Agreement).  Any transferee
of shares pursuant to a Transfer in accordance with the provisions of this
Section 5(c) is herein referred to as a "Permitted Transferee". For purposes of
this Agreement, "Family Group" means the Stockholder's spouse and descendants
(whether natural or adopted) and any trust solely for the benefit of such
Stockholder and/or any such Stockholder's spouse and/or descendants.
Notwithstanding the foregoing, no party hereto shall avoid the provisions of
this Agreement by making one or more transfers to one or more Permitted
Transferees and then disposing of all or any portion of such party's interest in
any such Permitted Transferee.

          (d) Termination of Restrictions.  The transfer restrictions set forth
in Section 5(a) shall continue with respect to each Preferred Investor Share and
each Investor Share until either

                                      -8-
<PAGE>

Group of Stockholders holds less than one-third of the number of Investor Shares
then held by the other Group of Stockholders.

          6.   Sharing of Fees and Expenses.

          (a) Pursuant to the Purchase Agreement, the Stockholders collectively
are entitled to be paid an aggregate of $750,000 as a fee in connection with the
Closing.  One-half of such fee shall be paid to Bain Capital, Inc. with respect
to the investment by the Bain Stockholders, and the remaining one-half of such
fee shall be paid to Madison Dearborn Partners, LLC with respect to the
investment by the MDP Stockholders.

          (b) The Stockholders are also entitled to reimbursement of their fees
and expenses in the event of the occurrence of the Closing up to a maximum of
$600,000, of which $300,000 is to be paid at Closing (the "Closing
Reimbursement") and the remaining $300,000 is to be paid on the first year
anniversary of the date of the Closing (the "Post-Closing Reimbursement").
Exhibit A attached hereto identifies the allocation of such reimbursements among
the fees and expenses that have been incurred by the Stockholders.

          7.   Contribution; Indemnification.  In the event any Stockholder
incurs a loss or makes a payment pursuant to any Claim made by any Company
Claimant pursuant to Section 6C of the Purchase Agreement or otherwise incurs
expenses in connection with defending or investigating any claim that may be or
is alleged to be indemnifiable under Section 6C or otherwise arising under the
Purchase Agreement, including, without limitation, the expenses of outside
counsel (collectively, a "Required Payment"), such Stockholder shall be entitled
to contribution from, and be reimbursed by, each other Stockholder based upon
the relative fault of each such other Stockholder in connection with such Claim.
Each other Stockholder shall contribute to and reimburse an Indemnifying
Stockholder in respect of each Required Payment in an aggregate amount based
upon the relative fault of such Stockholder.  In addition, each Stockholder (an
"Indemnifying Stockholder") shall indemnify each other Stockholders for any
Claims asserted against, imposed upon or incurred by such other Stockholder as a
result of or in connection with the breach by the Indemnifying Stockholder of
any of the Indemnifying Stockholder's covenants or agreements in any Transaction
Agreement.

          8.   Acquisition of Additional Equity Securities.  Pursuant to the
Corporate Governance Agreement, the Stockholders collectively are restricted
prior to the first anniversary of the date of the Closing, under many
circumstances, from acquiring any securities of the Company if, after the
acquisition, the Stockholders collectively would beneficially own more than 30%
of the voting power of the Company's outstanding securities.  The MDP
Stockholders agree that they shall not acquire any voting securities of the
Company prior to the first anniversary of the Closing without the prior written
consent of the holders of a majority of the Bain Investor Shares.

          9.   Exclusivity.   Each Stockholder agrees that it shall not, and
shall cause its Affiliates, officers, directors, employees, investment bankers,
attorneys, accountants and other agents not to, submit, solicit, initiate,
encourage or discuss any inquiries or offer or enter into any agreement

                                      -9-
<PAGE>

or accept any offer relating to, or consummate (or commit to consummate) any,
Other Proposal or engage in negotiations or discussions with, or furnish any
information to, assist or participate with, the Company or any of its Affiliates
relating to any Other Proposal. As used herein, "Other Proposal" shall mean any
proposal made by the Company or any other Person or Persons (other than the
Investors collectively (and only the Investors) pursuant to the Purchase
Agreement or any amendment thereto on the terms and conditions set forth in this
Agreement), with respect to the acquisition by any Person, other than the
Investors collectively (and only the Investors), directly or indirectly, from
the Company or any of its Affiliates, of any convertible preferred stock, any
other capital stock or any securities having equity or profit participation
features (the "Equity Securities"), or any debt securities in lieu of or
substitution for any Equity Securities (whether for the purpose of consummating
the BFI Transaction (as defined in the Purchase Agreement) or otherwise), and
each Stockholder shall advise the other Stockholders in writing of the receipt,
directly or indirectly, of any inquiries relating to an Other Proposal promptly
following such receipt. Following the receipt, directly or indirectly, of any
Other Proposal (or any inquiry relating to an Other Proposal), the Stockholder
receiving such Other Proposal (or such inquiry) shall furnish to the other
Stockholders either a copy of such Other Proposal (or such inquiry) or a written
summary of such Other Proposal (or such inquiry). In the event the transactions
contemplated by the Purchase Agreement are consummated (without any violation of
this Section 9), this restrictions set forth in this Section 9 shall be of no
further force and effect, and thereafter each Stockholder shall no longer be
restricted pursuant to this Section 9 from acquiring any securities of the
Company or any of its Affiliates.

          10.  Amendment of Transaction Agreements or Certificate of
Designation. Notwithstanding anything to the contrary in Section 3 of this
Agreement, the holders of 80% of the Investor Shares then held by the
Stockholders collectively shall have the exclusive right to consent to an
amendment or modification of any of the Transaction Agreements (including
without limitation any waiver provision) and the holders of 80% of the Preferred
Investor Shares then held by the Stockholders collectively shall have the
exclusive right to consent to an amendment or modification of the Certificate of
Designation (including without limitation any waiver provision); provided,
however, that the waiver of any provision in any of the Transaction Agreements
or the Certificate of Designation (but not the amendment or modification of any
waiver provision) shall be governed by Section 3 of this Agreement exclusively
and are not the subject of this Section 10.  In addition, no Stockholder shall
seek or obtain from the Company the waiver of, or an amendment or modification
of, any provision of any Transaction Agreement (other than the type of waiver or
agreement expressly contemplated by the first sentence of Section 5(b)) or the
Certificate of Designation (and shall not treat as being effective, or act on
the basis of, any waiver, amendment or modification made unilaterally by the
Company), without the prior written approval of both of the holders of a
majority of the Bain Investor Shares and the holders of a majority of the MDP
Investor Shares.

          11.  Definitions.

          "Affiliate" of a Person means any other Person controlling, controlled
by or under common control with such Person and, in the case of a Person which
is a partnership, any partner of such Person; provided, however, that, for
purposes of this Agreement, the Company shall be

                                      -10-
<PAGE>

deemed not to be an Affiliate of any Bain Stockholder or any MDP Stockholder;
and provided further that each Stockholder within each Group of Stockholders
shall be deemed not to be an Affiliate of any Stockholder within the other
Group.

          "Applicable Powers" means all of the powers, rights and remedies
granted to the Stockholders collectively (and not individually) pursuant to the
Certificate of Designation or any Transaction Agreement, including without
limitation the following:

          (i) the power of the Stockholders to waive any of the conditions to
     the Stockholders' obligation to close that are set forth in Section 2A of
     the Purchase Agreement;

          (ii) the power of the Stockholders to waive the Company's exclusivity
     obligations pursuant to Section 5F of the Purchase Agreement;

          (iii)  the power of the holders of Preferred Investor Shares to
     approve any Corporate Change (and certain aspects thereof) pursuant to
     Section 4D of the Certificate of Designation;

          (iv) the right of the holders of Preferred Investor Shares pursuant to
     Section 6 of the Certificate of Designation to approve certain actions to
     be taken by the Company;

          (vi) the right of the Stockholders pursuant to Section 8A of the
     Registration Agreement to approve any grant by the Company of certain other
     registration rights pursuant to Section 8A of the Registration Agreement;
     and

          (vii)  the right of the Stockholders pursuant to Section 3A of the
     Corporate Governance Agreement to approve certain actions to be taken by
     the Company;

     provided, however, that to the extent the manner of exercise of any powers
     or rights granted to the Stockholders collectively are expressly provided
     for elsewhere in this Agreement, such other express provisions shall
     prevail, and such power or right shall not be considered an "Applicable
     Power" for purposes of Section 3 of this Agreement; and provided further
     that the right to enforce or waive any matter considered to be an
     "Applicable Power" for purposes of Section 3 of this Agreement and the
     right to seek a remedy for the breach by the Company of any such
     "Applicable Power" shall themselves also be considered "Applicable Powers"
     for purposes of Section 3 of this Agreement.

          "Bain Investor Shares" means the Investor Shares held by the Bain
Stockholders.

          "Certificate of Designation" has the meaning set forth in the
preamble, as the same may be amended in accordance with its terms.

          "Closing Date" means the date on which the Closing occurs.

                                      -11-
<PAGE>

          "Common Stock" means the Company's Common Stock, par value $.01 per
share.

          "Corporate Change" has the meaning set forth in the Certificate of
Designation.

          "Corporate Governance Agreement" has the meaning set forth in the
preamble, as the same may be amended in accordance with its terms.

          "Investor Shares" means, with respect to any Stockholder, (i) any
shares of Common Stock actually acquired by such Stockholder pursuant to the
conversion of Investor Preferred Shares or as the result of a Transfer from any
other Stockholder or former Stockholder, (ii) any shares of Common Stock
issuable upon conversion of any Preferred Investor Shares held by such
Stockholder, (iii) any shares of Common Stock issued directly or indirectly with
respect to the Common Stock referred to in clause (i) above by way of stock
dividend or stock split or combination of shares, (iv) any shares of Common
Stock or equivalent capital stock or equity securities issued directly or
indirectly with respect to the Common Stock referred to in clauses (i) and (iii)
above in connection with a recapitalization, merger, consolidation or other
reorganization, and (v) any shares of Common Stock or equivalent capital stock
or equity securities issuable upon conversion of any capital stock or equity
securities issued directly or indirectly with respect to the Preferred Investor
Shares referred to in clause (ii) above in connection with a recapitalization,
merger, consolidation or other reorganization, and "Investor Shares" means, with
respect to all or any Group of the Stockholders, the aggregate number of
Investor Shares held by each and every Stockholder or each Stockholder in such
Group, as the case may be.  As to any particular shares constituting Investor
Shares, such shares shall cease to be Investor Shares when they have been sold
in a Public Sale or when they are no longer held by any Stockholder.

          "MDP Investor Shares" means the Investor Shares held by the MDP
Stockholders.

          "Person" means an individual, a partnership, a corporation, a limited
liability company, an association, a joint stock company, a trust, a joint
venture, an unincorporated organization and a governmental entity or any
department, agency or political subdivision thereof.

          "Preferred Investor Shares" means the shares of the Company's Series A
Convertible Preferred Stock, par value $.01 per share, that are acquired by the
Investors pursuant to the Purchase Agreement.

          "Public Sale" means any sale of Common Stock to the public through a
broker, dealer or market maker pursuant to the provisions of Rule 144 adopted
under the Securities Act.

          "Purchase Agreement" has the meaning set forth in the preamble, as the
same may be amended in accordance with its terms.

          "Registration Agreement" has the meaning set forth in the preamble, as
the same may be amended in accordance with its terms.

                                      -12-
<PAGE>

          "Securities Act" means the Securities Act of 1933, as amended from
time to time.

          "Subsidiary" means, with respect to any Person, any corporation,
limited liability company, partnership, association or other business entity of
which (i) if a corporation, a majority of the total voting power of shares of
stock entitled (without regard to the occurrence of any contingency) to vote in
the election of directors, managers or trustees thereof is at the time owned or
controlled, directly or indirectly, by that Person or one or more of the other
Subsidiaries of that Person or a combination thereof, or (ii) if a limited
liability company, partnership, association or other business entity, a majority
of the limited liability company, partnership or other similar ownership
interest thereof is at the time owned or controlled, directly or indirectly, by
any Person or one or more Subsidiaries of that Person or a combination thereof.
For purposes hereof, a Person or Persons shall be deemed to have a majority
ownership interest in a limited liability company, partnership, association or
other business entity if such Person or Persons shall be allocated a majority of
the limited liability company, partnership, association or other business entity
gains or losses or shall be or control the managing member or general partner of
such limited liability company, partnership, association or other business
entity.

          "Transaction Agreements" means the Purchase Agreement, the
Registration Agreement and the Corporate Governance Agreement collectively.

          12.  Amendment and Waiver of this Agreement.  Any amendment or
modification of any provision of this Agreement shall be effective against all
of the Stockholders if (and no amendment or modification of any provision of
this Agreement shall be effective against the Stockholders unless) such
amendment or modification has been approved in writing by the holders of a
majority of the Bain Investor Shares and by the holders of a majority of the MDP
Investor Shares (in the case of a modification or amendment prior to Closing,
based upon the number of Investor Shares to be acquired by each of the
Stockholders), and any waiver of any provision of this Agreement shall be
effective against a Group of Stockholders if (and no waiver shall be effective
against such Group of Stockholders unless) such waiver has been approved in
writing by the holders of a majority of the Investor Shares then held by such
Group of Stockholders.  The failure of any party or parties to enforce any of
the provisions of this Agreement shall in no way be construed as a waiver of
such provisions and shall not affect the right of such party or parties
thereafter to enforce each and every provision of this Agreement in accordance
with its terms.  The addition of any party or parties hereto as a Bain
Stockholder or as an MDP Stockholder pursuant to the execution of a joinder to
this Agreement shall not constitute a modification, amendment or waiver of this
Agreement, and any such joinder to which any such Person is a party shall be
binding upon all initial parties to this Agreement and all subsequent parties to
this Agreement.

          13.  Severability.  Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be invalid,
illegal or unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceability shall not affect
the validity, legality or enforceability of any other provision of this
Agreement in such jurisdiction or affect the validity, legality or
enforceability of any provision in any other jurisdiction, but this Agreement
shall

                                      -13-
<PAGE>

be reformed, construed and enforced in such jurisdiction as if such invalid,
illegal or unenforceable provision had never been contained herein.

          14.  Entire Agreement.  Except as otherwise expressly set forth
herein, this Agreement and with the other agreements expressly identified herein
embody the complete agreement and understanding among the parties hereto with
respect to the subject matter hereof and supersedes and preempts any prior
understandings, agreements or representations by or among the parties, written
or oral, which may have related to the subject matter hereof in any way.

          15.  Successors and Assigns.  Except as otherwise provided herein,
this Agreement shall bind and inure to the benefit of and be enforceable by the
Stockholders and any subsequent Persons that become parties to this Agreement by
executing and delivering a joinder hereto; provided, however, that no party
hereto shall have the right to assign any of its rights hereunder to any Person
other than a Permitted Transferee.

          16.  Counterparts.  This Agreement may be executed in multiple
counterparts, each of which shall be an original and all of which taken together
shall constitute one and the same agree  ment.

          17.  Remedies.  Enforcement of any of the rights of the Bain
Stockholders under this Agreement shall be made only by the holders of a
majority of the Bain Investor Shares, and enforcement of any of the rights of
the MDP Stockholders under this Agreement shall be made only by the holders of a
majority of the MDP Investor Shares.  Subject to the preceding sentence, the
Bain Stockholders and the MDP Stockholders shall be entitled to enforce their
rights under this Agreement specifically, to recover damages by reason of any
breach of any provision of this Agreement and to exercise all other rights
existing in their favor.  The parties hereto agree and acknowledge that money
damages would not be an adequate remedy for any breach of the provisions of this
Agreement and that the Bain Stockholders and the MDP Stockholders, respectively,
may in their sole discretion apply to any court of law or equity of competent
jurisdiction for specific performance and/or injunctive relief (without posting
a bond or other security) in order to enforce or prevent any violation of the
provisions of this Agreement.

          18.  Notices.  All notices, demands and other communications to be
given or delivered under or by reason of the provisions of this Agreement shall
be in writing and shall be deemed to have been given when personally delivered,
sent by telecopy (with receipt confirmed) on a business day during regular
business hours of the recipient (or, if not, on the next succeeding business
day) or one business day after being sent by reputable overnight courier service
(charges prepaid).  Such notices, demands and other communications will be sent
to the Bain Stockholders and the MDP Stockholders at the respective addresses
indicated below:

                                      -14-
<PAGE>

          If to the Bain Stockholders:

               c/o Bain Capital, Inc.
               Two Copley Place
               Boston, Massachusetts  02116
               Attention:     Stephen Pagliuca
                              John Connaughton
                              Joe Pretlow
               Telecopy No.:  (617) 572-3274

          with a copy to (which shall not constitute notice hereunder):

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention:     Jeffrey C. Hammes, P.C.
                              Stephen D. Oetgen
               Telecopy No.:  (312) 861-2200

          If to the MDP Stockholders:

               c/o Madison Dearborn Partners, Inc.
               Three First National Plaza
               Suite 3800
               Chicago, IL 60602
               Attention:     Thomas R. Reusche
               Telecopy:      (312) 895-1156

          with a copy to (which shall not constitute notice hereunder):

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention:     Michael H. Kerr, P.C.
                              Richard W. Porter
               Telecopy No.:  (312) 861-2200

          19.  Governing Law.  All issues and questions concerning the
construction, validity, interpretation and enforceability of this Agreement and
the exhibits and schedules hereto shall be governed by, and construed in
accordance with, the laws of the State of Illinois, without giving effect to any
choice of law or conflict of law rules or provisions (whether of the State of
Illinois or any other jurisdiction) that would cause the application of the laws
of any jurisdiction other than the State of Illinois.

                                      -15-
<PAGE>

          20.  Descriptive Headings.  The descriptive headings of this Agreement
are inserted for convenience only and do not constitute a part of this
Agreement.

          21.  No Strict Construction.  Notwithstanding that this Agreement has
been drafted or prepared by one of the parties hereto, each of the parties
hereto confirms that such party and their respective counsel have reviewed,
negotiated and adopted this Agreement as the joint agreement of the parties.
The language used in this Agreement shall be deemed to be the language chosen by
the parties, and no rule of strict construction shall be applied against any
party.

          22.  Independence.  Nothing contained herein shall be construed to
constitute (i) a partnership or joint venture of the parties hereto or (ii) an
agency relationship between the two Groups of Stockholders.  Neither Group of
Stockholders (or any member thereof) shall have the power or authority to bind
the other Group of Stockholders (or any member thereof) to any other agreement.

                                      -16-
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement on
the day and year first above written.

                            BAIN CAPITAL FUND VI, L.P.


                            By:   Bain Capital Partners VI, L.P.
                            Its.  General Partner

                            By:   Bain Capital Investors VI, Inc.
                            Its:  General Partner


                            By: /s/ John P. Connaughton
                               ------------------------------------------------
                            A Managing Director


                            BCIP ASSOCIATES II


                            By:   Bain Capital, Inc.
                            Its:  Managing Partner


                            By: /s/ John P. Connaughton
                               ------------------------------------------------
                            A Managing Director


                            BCIP ASSOCIATES II-B


                            By:   Bain Capital, Inc.
                            Its:  Managing Partner


                            By: /s/ John P. Connaughton
                               ------------------------------------------------
                            A Managing Director


                            BCIP ASSOCIATES II-C


                            By:   Bain Capital, Inc.
                            Its:  Managing Partner


                            By: /s/ John P. Connaughton
                               ------------------------------------------------
                            A Managing Director

<PAGE>

                            BCIP TRUST ASSOCIATES II


                            By:   Bain Capital, Inc.
                            Its:  Managing Partner


                            By: /s/ John P. Connaughton
                               ____________________________________
                            A Managing Director


                            BCIP TRUST ASSOCIATES II-B


                            By:   Bain Capital, Inc.
                            Its:   Managing Partner


                            By: /s/ John P. Connaughton
                               ____________________________________
                            A Managing Director


                            SANKATY HIGH YIELD ASSET PARTNERS, L.P.


                            By: /s/ Joshua Bekenstein
                               ____________________________________
                            A Managing Director
<PAGE>

                            PEP INVESTMENTS PTY. LIMITED


                            By:   Bain Capital, Inc.
                            Its:  Attorney-in-Fact


                            By: /s/ John P. Connaughton
                               ____________________________________
                            A Managing Director


                            BROOKSIDE CAPITAL PARTNERS FUND, L.P.


                            By: /s/ John P. Connaughton
                               ____________________________________
                            A Managing Director


                            RANDOLPH STREET PARTNERS II



                            By: /s/ Matthew E. Steinmetz
                               ____________________________________
                            A General Partner
<PAGE>

                            MADISON DEARBORN CAPITAL PARTNERS III, L.P.


                            By:  Madison Dearborn Partners III, L.P.
                            Its: General Partner

                            By:  Madison Dearborn Partners, LLC
                            Its: General Partner


                            By: /s/ Thomas R. Reusche
                                ------------------------------------
                            A Managing Director


                            MADISON DEARBORN SPECIAL EQUITY III, L.P.


                            By:  Madison Dearborn Partners III, L.P.
                            Its: General Partner

                            By:  Madison Dearborn Partners, LLC
                            Its: General Partner


                            By: /s/ Thomas R. Reusche
                                ------------------------------------
                            A Managing Director



                            SPECIAL ADVISORS FUND I, LLC


                            By:  Madison Dearborn Partners III, L.P.
                            Its: Manager

                            By:  Madison Dearborn Partners, LLC
                            Its: General Partner


                            By: /s/ Thomas R. Reusche
                                ------------------------------------
                            A Managing Director

<PAGE>

                                   SCHEDULE I
                                   ----------



Name and Address                  Number of Stockholder Shares
- ----------------                  ----------------------------
<TABLE>
<CAPTION>

<S>                                        <C>
Bain Capital Fund VI, L.P.                 25,403.76

BCIP Associates II                          4,491.38

BCIP Associates II-B                          615.62

BCIP Associates II-C                        1,319.76

Brookside Capital Partners Fund, L.P.       1,856.25

BCIP Trust Associates II                    1,291.22

BCIP Trust Associates II-B                    206.08

Sankaty High Yield Asset Partners, L.P.     1,856.25

PEP Investments Pty. Limited                   84.68

Randolph Street Partners II                   375.00
</TABLE>
<PAGE>

                                  SCHEDULE II
                                  -----------



Name and Address                      Number of Stockholder Shares
- ----------------                      ----------------------------
<TABLE>
<CAPTION>

<S>                                            <C>
Madison Dearborn Capital Partners III, L.P.    36,538.68

Madison Dearborn Special Equity III, L.P.         811.32

Special Advisors Fund I, LLC                      150.00
</TABLE>

<PAGE>

                                                                       Exhibit G

                               POWER OF ATTORNEY

          KNOW ALL BY THESE PRESENTS, that each of the undersigned hereby
constitutes and appoints each of Jeffrey C. Hammes, Stephen D. Oetgen and Dennis
M. Myers, signing singly, the undersigned's true and lawful attorney-in-fact to:
(i) execute for and on behalf of the undersigned, in the undersigned's capacity
as a beneficial owner of shares of common stock of Stericycle, Inc., a Delaware
corporation (the "Company"), any Schedule 13D or Schedule 13G, and any
amendments, supplements or exhibits thereto (including any joint filing
agreement), required to be filed by the undersigned under Section 13 of the
Securities Exchange Act of 1934 and the rules thereunder (the "Exchange Act")
and any Forms 3, 4, and 5 in accordance with Section 16(a) of the Exchange Act;
(ii) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Schedule 13D,
Schedule 13G or Form 3, 4, or 5 and timely file such schedule or form with the
United States Securities and Exchange Commission and any stock exchange or
similar authority, including the NASDAQ National Market; and (iii) take any
other action of any type whatsoever in connection with the foregoing which, in
the opinion of such attorney-in-fact, may be of benefit to, in the best interest
of, or legally required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in such attorney-in-
fact's discretion

          The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 13 or Section 16 of the Exchange Act.

          This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file reports or schedules under Section 13
or 16 of the Exchange Act with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

          IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 19th day of November, 1999.


                                   BAIN CAPITAL FUND VI, L.P.
                                   By:   Bain Capital Partners VI, L.P.,
                                          its General Partner

                                   By:   Bain Capital Investors VI, Inc.,
                                          its General Partner

                                   By:  /s/ John P. Connaughton
                                        ---------------------
                                        Name:     John P. Connaughton
                                        Title:    Managing Director
<PAGE>

                                   BAIN CAPITAL PARTNERS VI, L.P.
                                   By:   Bain Capital Investors VI, Inc.,
                                          its General Partner

                                   By:  /s/ John P. Connaughton
                                        -----------------------
                                        Name:     John P. Connaughton
                                        Title:    Managing Director


                                   BAIN CAPITAL INVESTORS VI, INC.

                                   By:  /s/ John P. Connaughton
                                        -----------------------
                                        Name:     John P. Connaughton
                                        Title:    Managing Director


                                   SANKATY HIGH YIELD ASSET PARTNERS, L.P.
                                   By: Sankaty High Yield Asset Investors, LLC,
                                         its General Partner

                                   By: Sankaty High Yield Asset Investors, Ltd.,
                                         its Managing Member

                                   By: /s/ Joshua Bekenstein
                                       ---------------------
                                        Name:     Joshua Bekenstein
                                        Title:    Vice President


                                   SANKATY HIGH YIELD ASSET INVESTORS, LLC
                                   By: Sankaty High Yield Asset Investors, Ltd.,
                                         its Managing Member

                                   By:  /s/ Michele May
                                        ------------------
                                        Name:     Michele D. May
                                        Title:    Vice President


                                   SANKATY HIGH YIELD ASSET INVESTORS, LLC
                                    By:  /s/ Michele May
                                         ------------------
                                         Name:    Michele D. May
                                         Title:   Vice President

                                       2
<PAGE>

                                    BROOKSIDE CAPITAL PARTNERS FUND, L.P.
                                    By:  Brookside Capital Investors, L.P.,
                                           its General Partner

                                    By:   Brookside Capital Investors, Inc.,
                                            its General Partner

                                    By:  /s/ Domenic J. Ferrante
                                         -----------------------
                                         Name:     Domenic J. Ferrante
                                         Title:    Managing Director


                                    BROOKSIDE CAPITAL INVESTORS, L.P.
                                    By:  Brookside Capital Investors, Inc.,
                                           its General Partner

                                    By:  /s/ Michele May
                                         ---------------
                                         Name:     Michele D. May
                                         Title:    Vice President


                                    BROOKSIDE CAPITAL INVESTORS, INC.

                                    By:  /s/ Michele May
                                         ---------------
                                         Name:     Michele D. May
                                         Title:    Vice President


                                    BCIP ASSOCIATES II
                                    BCIP TRUST ASSOCIATES II
                                    BCIP ASSOCIATES II-B
                                    BCIP TRUST ASSOCIATES II-B
                                    BCIP ASSOCIATES II-C
                                    By:  Bain Capital, Inc.,
                                          their Managing General Partner

                                    By:  /s/ John P. Connaughton
                                         -----------------------
                                         Name:     John P. Connaughton
                                         Title:    Managing Director


                                    BAIN CAPITAL, INC.

                                    By:  /s/ John P. Connaughton
                                         -----------------------
                                         Name:      John P. Connaughton
                                         Title:     Managing Director

                                       3
<PAGE>

                                    PEP INVESTMENTS PTY LIMITED
                                    By:  Bain Capital, Inc.,
                                         its attorney-in-fact

                                    By:  /s/ John P. Connaughton
                                         -----------------------
                                         Name:     John P. Connaughton
                                         Title:    Managing Director

                                       4


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