X0202 4 2006-10-11 0 0001319048 Chaparral Steel CO CHAP 0001244362 MAHAFFEY JOSEPH D 300 WARD ROAD MIDLOTHIAN TX 76065 1 0 0 0 Common Stock, Par Value $0.01 per share 2006-10-11 4 A 0 3222 0.00 A 9222 D 3,222 shares of restricted stock issued pursuant to the Chaparral Steel Company Amended and Restated 2005 Omnibus Equity Compensation Plan. The restrictions on these shares will expire on the date of the Companny's 2007 Annual Meeting of Stockholders. Represents 6,000 shares held directly (after giving effect to the Chaparral Steel Company stock dividend, effective September 1, 2006)plus the restricted shares of common stock currently being reported. /s/ Robert E. Crawford, Jr., as attorney-in-fact for Joesph D. Mahaffey 2006-10-13