X0202 4 2007-04-05 0 0001370946 Owens Corning OC 0001263972 D. E. SHAW LAMINAR PORTFOLIOS, L.L.C. 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK NY 10036 1 0 1 1 See footnotes 2 and 3. 0001327537 D. E. Shaw Oculus Portfolios, L.L.C. 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK NY 10036 1 0 1 1 See footnotes 2 and 3. 0001009268 D. E. SHAW & CO, L.P. 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK NY 10036 1 0 1 1 See footnotes 2 and 3. 0001277502 D. E. SHAW & CO, L.L.C. 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK NY 10036 1 0 1 1 See footnotes 2 and 3. 0001023870 SHAW DAVID E 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK NY 10036 1 0 1 1 See footnotes 2 and 3. Put Option (obligation to buy) 25 2007-04-05 4 E 0 1 D 2007-01-05 2007-04-05 $.01 Par Value Common 6447188 0 D No consideration was paid or received as a result of the expiration of the options reported in Table II. The Put Option in Table II was directly held by D. E. Shaw Laminar Portfolios, L.L.C. ("Laminar"). D. E. Shaw & Co., L.P. ("DESCO LP"), as investment adviser to Laminar and D. E. Shaw Oculus Portfolios, L.L.C. ("Oculus"); D. E. Shaw & Co., L.L.C. ("DESCO LLC"), as managing member of Laminar and Oculus; and Mr. David E. Shaw ("David E. Shaw") (as president and sole shareholder of D. E. Shaw & Co., Inc., which is the general partner of DESCO LP, and as president and sole shareholder of D. E. Shaw & Co. II, Inc., which is the managing member of DESCO LLC) may be deemed to be the beneficial owners of more than 10% of the Common Stock of the Issuer for purposes of Rule 16a-1(a)(2) of the Securities Exchange Act of 1934. (Cont'd in FN 3) In accordance with instruction 4(b)(iv), the entire number of shares of Common Stock that may be deemed to be beneficially owned by DESCO LP or DESCO LLC was previously reported on Form 3. Each of DESCO LP, DESCO LLC, and David E. Shaw disclaims any beneficial ownership of any of the securities reported on Form 3 or on this Form 4, except to the extent of any pecuniary interest therein. The reporting persons also may be deemed directors of the Issuer by virtue of DESCO LP employee Marc Sole's service as a member of the Issuer's board of directors. None of Laminar, Oculus, DESCO LP, DESCO LLC, or David E. Shaw serves as a director of the Issuer. D. E. Shaw Laminar Portfolios, L.L.C., By: D. E. Shaw & Co., L.L.C., as managing member, By: Eric Wepsic, Managing Director 2007-04-09 D. E. Shaw Oculus Portfolios, L.L.C., By: D. E. Shaw & Co., L.L.C., as managing member, By: Eric Wepsic, Managing Director 2007-04-09 D. E. Shaw & Co., L.P., By: Eric Wepsic, Managing Director 2007-04-09 D. E. Shaw & Co., L.L.C., By: Eric Wepsic, Managing Director 2007-04-09 David E. Shaw, By: Eric Wepsic, Attorney-in-Fact for David E. Shaw 2007-04-09