X0201 5 2003-12-31 0 0 0 0000912562 GIBRALTAR STEEL CORP Rock 0000942070 LIPKE NEIL E C/O GIBRALTAR STEEL CORP 3556 LAKE SHORE RD P O BOX 2028 BUFFALO NY 14219-0228 0 0 0 1 Trustee Common stock 2003-03-31 5 J 0 L 2.8 18.27 A 1286.27 I Gibraltar Steel Corp. 401(k) Savings Plan Common stock 2003-06-30 5 J 0 L 2.89 18.76 A 1289.17 I Gibraltar Steel Corp. 401(k) Savings Plan Common stock 2003-09-30 5 J 0 L 2.81 21.98 A 1291.97 I Gibraltar Steel Corp. 401(k) Savings Plan Common stock 2003-10-31 5 J 0 L 2.46 24.82 A 1294.43 I Gibraltar Steel Corp. 401(k) Savings Plan Common stock 655527 I By Trust Common stock 80755 D Common stock 7005 I By Trust Common stock 6700 I By Trust Common stock 90880 I By Trust Common stock 5800 I By Trust Common stock 5940 I By Trust Common stock 125651 I Rush Creek Investment Co. L.P. Common stock 2003-10-31 5 S 0 L 1294.43 24.4 D 0 I Gibraltar Steel Corp. 401(k) Savings Plan Represents the net effect of shares purchased and sold from January 1, 2003 through March 31, 2003 pursuant to the Gibraltar Steel Corporation 401(k) Savings Plan at an average price of $18.27 per share. Represents the net effect of shares purchased and sold from April 1, 2003 through June 30, 2003 pursuant to the Gibraltar Steel Corporation 401(k) Savings Plan at an average price of $18.76 per share. Represents the net effect of shares purchased and sold from July 1, 2003 through September 30, 2003 pursuant to the Gibraltar Steel Corporation 401(k) Savings Plan at an average price of $21.98 per share. Represents the net effect of shares purchased and sold from October 1, 2003 through October 31, 2003 pursuant to the Gibraltar Steel Corporation 401(k) Savings Plan at an average price of $24.82 per share. Represents shares held by a trust for the benefit of reporting person, of which he serves as one of three trustees and shares voting and investment power. Shares held by trust for the benefit of a child (Katherine Victoria) of an insider of Gibraltar Steel Corporation, which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership. Represents shares held by trust for the benefit of a child (Kenneth E. Lipke) of an insider of Gibraltar Steel Corporation, which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership. Represents shares held by trust for the benefit of insiders of Gibraltar Steel Corporation, of which the reporting person serves as one of five trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership. Represents shares held by trust for the benefit of a child (Erica Rae) of an insider of Gibraltar Steel Corporation, which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership. Represents shares held by trust for the benefit of a child (Elissa Kristina) of an insider of Gibraltar Steel Corporation, of which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership. Shares held indirectly representing the pecuniary interest of reporting person in shares of Gibraltar Steel Corporation common stock held by Rush Creek Investment Co., LP. The reporting person disclaims beneficial interest in such shares, except to the extent of his beneficial interest. /s/Janet N. Gabel, Attorney in fact for Neil E. Lipke 2004-02-13