SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G
                                (Rule 13d - 102)

    INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-1(b), (c)
           AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b)

                               (Amendment No. 3)*


                            Oregon Steel Mills, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    686079104
                                 (CUSIP Number)

                                December 31, 2003
             (Date of Event which Requires Filing of this Statement)

Check the  appropriate  box to  designate  the rule  pursuant to which this
Schedule is filed:

[ ]      Rule 13d-1(b)
[x]      Rule 13d-1(c)
[ ]      Rule 13d-1(d)

     *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 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).

                       (Continued on the Following Pages)



1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                  Sage Opportunity Fund, L.P.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)      [x]
         (b)      [ ]

3.       SEC USE ONLY

4.       CITIZENSHIP OR PLACE OF ORGANIZATION

                  Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

5.       SOLE VOTING POWER

                  0

6.       SHARED VOTING POWER

                  0

7.       SOLE DISPOSITIVE POWER

                  0

8.       SHARED DISPOSITIVE POWER

                  0

9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  0

10.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
         EXCLUDES CERTAIN SHARES*   [ ]

11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                  0.0%

12.      TYPE OF REPORTING PERSON*

                  PN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                  Sage Master Investments Ltd.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)      [x]
         (b)      [ ]

3.       SEC USE ONLY

4.       CITIZENSHIP OR PLACE OF ORGANIZATION

                  Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

5.       SOLE VOTING POWER

                  0

6.       SHARED VOTING POWER

                  0

7.       SOLE DISPOSITIVE POWER

                  0

8.       SHARED DISPOSITIVE POWER

                  0

9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  0

10.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
         EXCLUDES CERTAIN SHARES*   [ ]

11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                  0.0%

12.      TYPE OF REPORTING PERSON*

                  CO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                  Sage Asset Management, L.L.C.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)      [x]
         (b)      [ ]

3.       SEC USE ONLY

4.       CITIZENSHIP OR PLACE OF ORGANIZATION

                  Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

5.       SOLE VOTING POWER

                  0

6.       SHARED VOTING POWER

                  0

7.       SOLE DISPOSITIVE POWER

                  0

8.       SHARED DISPOSITIVE POWER

                  0

9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  0

10.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
         EXCLUDES CERTAIN SHARES*   [ ]

11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                  0.0%

12.      TYPE OF REPORTING PERSON*

                  OO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                  Barry Haimes

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)      [x]
         (b)      [ ]

3.       SEC USE ONLY

4.       CITIZENSHIP OR PLACE OF ORGANIZATION

                  United States

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.       SOLE VOTING POWER

                  0

6.       SHARED VOTING POWER

                  0

7.       SOLE DISPOSITIVE POWER

                  0

8.       SHARED DISPOSITIVE POWER

                  0

9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  0

10.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
         EXCLUDES CERTAIN SHARES*   [ ]

11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                  0.0%

12.      TYPE OF REPORTING PERSON*

                  IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                  Katherine Hensel

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)      [x]
         (b)      [ ]

3.       SEC USE ONLY

4.       CITIZENSHIP OR PLACE OF ORGANIZATION

                  United States

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.       SOLE VOTING POWER

                  0

6.       SHARED VOTING POWER

                  0

7.       SOLE DISPOSITIVE POWER

                  0

8.       SHARED DISPOSITIVE POWER

                  0

9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  0

10.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
         EXCLUDES CERTAIN SHARES*   [ ]

11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                  0.0%

12.      TYPE OF REPORTING PERSON*

                  IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


     This  statement is filed  pursuant to Rule 13d-2(b)  promulgated  under the
Securities  Exchange  Act of 1934,  as  amended,  with  respect to the shares of
common stock (the "Common  Stock") of Oregon Steel Mills,  Inc.  (the  "Issuer")
beneficially owned by Sage Opportunity Fund, L.P., Sage Master Investments Ltd.,
Sage Asset Management,  L.L.C., Barry Haimes and Katherine Hensel (collectively,
the "Reporting  Persons") as of February 5, 2003 and amends and  supplements the
Schedule 13G dated June 28, 2001, as  subsequently  amended  (collectively,  the
"Schedule 13G"). Except as set forth herein, the Schedule 13G is unmodified.

Item 4.   Ownership.

     Provide  the  following  information  regarding  the  aggregate  number and
percentage of the class of securities of the issuer identified in Item 1.

          (a)     Amount beneficially owned:

                  None of the Reporting  Persons  beneficially owns any shares
                  of Common Stock.

          (b)     Percent of class:

                  Not applicable.

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

                  (i)  Sole power to vote or to direct the vote

                  Not applicable.

                  (ii)  Shared power to vote or to direct the vote

                  Not applicable.

                  (iii)  Sole power to dispose or to direct the disposition of

                  Not applicable.

                  (iv)  Shared power to dispose or to direct the disposition of

                  Not applicable.

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

     If this  statement  is being  filed to report  the fact that as of the date
hereof the  Reporting  Persons have ceased to be the  beneficial  owners of more
than five percent of the class of securities, check the following [x].


Item 10.  Certifications.

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



                                   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.

Dated:  February 12, 2004

          SAGE OPPORTUNITY FUND, L.P.
          By: Sage Asset Management, L.L.C., as general partner


                   By: /s/ Barry Haimes
                   --------------------
                           Barry Haimes
                           Managing Member

          SAGE MASTER INVESTMENTS LTD.


          By: /s/ Barry Haimes
          --------------------
                  Barry Haimes
                  Director

          SAGE ASSET MANAGEMENT, L.L.C.


          By: /s/ Barry Haimes
          --------------------
                  Barry Haimes
                  Managing Member



          /s/ Barry Haimes
          ----------------
              Barry Haimes


          /s/ Katherine Hensel
          --------------------
              Katherine Hensel