X0202 4 2007-02-22 0000032017 ELKCORP ELK 0001023181 SISLER DAVID G 14911 QUORUM DRIVE SUITE 600 DALLAS TX 75254-1491 0 1 0 0 SVP General Counsel Secretary Common Stock, $1 par value per share 2006-12-22 5 G 0 100 0 D 14559.3825 D Common Stock, $1 par value per share 2007-02-22 4 U 0 14459 43.50 D 100.3825 D Common Stock, $1 par value per share 2007-02-22 4 M 0 8700 43.50 A 8800.3825 D Common Stock, $1 par value per share 2007-02-22 4 U 0 8700 43.50 D 100.3825 D Common Stock, $1 par value per share 2007-02-22 4 A 0 20340 43.50 A 20440.3825 D Common Stock, $1 par value per share 2007-02-22 4 U 0 20340 43.50 D 100.3825 D Common Stock, $1 par value per share 2007-02-22 4 U 0 2035.5685 43.50 D 0 I By ESOP Trustree Performance Stock 43.50 2007-02-22 4 M 0 3105 43.50 D 2007-02-22 Common Stock 3105 0 D Performance Stock 43.50 2007-02-22 4 M 0 2655 43.50 D 2007-02-22 Common Stock 2655 0 D Performance Stock 43.50 2007-02-22 4 M 0 2940 43.50 D 2007-02-22 Common Stock 2940 0 D Granted under the 2004 Amended and Restated ElkCorp Equity Incentive Compensation Plan. Shares of common stock issued in settlement of performance stock award based on total shareholder return (each, a "TSR Award"): 3,105 shares from 2004 TSR Award, 2,655 shares from 2005 TSR Award and 2,940 shares from 2006 TSR Award. Shares of common stock issued in settlement of performance stock award based on return on equity (each, an "ROE Award"): 7,260 shares from 2004 ROE Award, 6,210 shares from 2005 ROE Award and 6,870 shares from 2006 ROE Award. Settlement of 2004 TSR Award with common stock. Settlement of 2005 TSR Award with common stock. Settlement of 2006 TSR Award with common stock. Awards exercisable prior to maturity by virtue of Change in Control, in accordance with award agreements. Not applicable. David G. Sisler 2007-02-23