4 1 edgar.txt FORM 4 - OCTOBER 29, 2002 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person McMahan, Michael L. 3817 Merriman Drive Plano, TX 75074 USA 2. Issuer Name and Ticker or Trading Symbol ElkCorp ELK 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year October 29, 2002 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) (X) Director ( ) 10% Owner ( ) Officer (give title below) ( ) Other (specify below) Director 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person

Explanation of Responses: *Granted under the 2002 ElkCorp Equity Incentive Compensation Plan. SIGNATURE OF REPORTING PERSON /s/ Michael L. McMahan DATE October 31, 2002

MCMAHAN MICHAEL L 4