Notice to Members
Notice No. 523
10/16/2008
IMPORTANT REMINDER – $750,000 NYMEX Membership Rights Payment
As a reminder, in order for NYMEX Class A Members of record as of August 22, 2008 to receive the Membership Rights Payment as described in the attached Notice to Owners of Class A Memberships in New York Mercantile Exchange, Inc., the Final Waiver and Release and Substitute W-9 Form (also attached) must be received at the address below no later than 5:00 p.m. New York Time on October 21, 2008.

You may obtain the Notice and Final Waiver and Release Form and Substitute W-9 Form by clicking on the links below:

Please execute the Final Waiver and Release Form and the Substitute W-9 Form and submit the executed forms (including Medallion Signature Stamp/Guarantee if required) via first class, registered or certified mail to:

Computer Share Trust Company, N.A.
Corporate Actions Voluntary Offer
P.O. Box 43011
Providence, RI 02940-3011


or via Overnight Courier to:

Computer Share Trust Company, N.A.
Corporate Actions Voluntary Offer
250 Royall Street
Canton, MA 02021


TO RECEIVE THE MEMBERSHIP RIGHTS PAYMENT, THE ENCLOSED WAIVER AND RELEASE MUST BE PROPERLY COMPLETED, EXECUTED AND DELIVERED TO COMPUTERSHARE TRUST COMPANY, N.A. BY 5:00 P.M., NEW YORK TIME, ON OCTOBER 21, 2008. THE WAIVER AND RELEASE MUST BE EXECUTED WITHOUT ANY CHANGES OR ALTERATIONS. IF YOUR EXECUTED WAIVER AND RELEASE IS NOT RECEIVED BY 5:00 P.M., NEW YORK TIME, ON OCTOBER 21, 2008, YOUR WAIVER AND RELEASE WILL NOT BE ACCEPTED, AND YOU WILL NOT RECEIVE A MEMBERSHIP RIGHTS PAYMENT.

If you have any questions on this matter, please contact the Membership Department at 212-299-2370.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com