X0202 4 2007-06-14 1 0000791348 LONE STAR TECHNOLOGIES INC LSS 0001218739 DUNN W BYRON 15660 N. DALLAS PARKWAY SUITE 500 DALLAS TX 75248 0 1 0 0 CEO of Operating Company Common Stock 2007-06-14 4 D 0 556 67.50 D 0 D Restricted Stock 2007-06-14 4 D 0 26000 67.50 D 0 D Stock Option 15.0750 2007-06-14 4 D 0 8750 D Common Stock 8750 0 D Stock Option 16.5150 2007-06-14 4 D 0 15000 D Common Stock 15000 0 D Pursuant to the Agreement and Plan of Merger, dated March 28, 2007, by and among United States Steel Corporation, WP Acquisition Holding Corp. and Lone Star Technologies, Inc., at the effective time of the merger, each outstanding share of Lone Star common stock converted into the right to receive $67.50 in cash, without interest. Pursuant to the Agreement and Plan of Merger, dated March 28, 2007, by and among United States Steel Corporation, WP Acquisition Holding Corp. and Lone Star Technologies, Inc., at the effective time of the merger, each restricted share of Lone Star common stock became fully vested and converted into the right to receive $67.50 in cash, without interest. Pursuant to the Agreement and Plan of Merger, dated March 28, 2007, by and among United States Steel Corporation, WP Acquisition Holding Corp. and Lone Star Technologies, Inc., at the effective time of the merger, each outstanding option to purchase Lone Star common stock became fully vested and converted into the right to receive an amount in cash equal to the excess of $67.50 over the exercise price per share of common stock subject to such option. W. Byron Dunn 2007-06-14