Effective Thursday, February 25, 2010 (trade date February 26, 2010), CME Group will list the first nearby
May vs. October five-month spread for the Henry Hub Natural Gas Financial Calendar Spread Option (code G5).
The initial listing will be an option on the spread between May 2010 and October 2010 futures contracts.
As is the case with the existing five-month spread, this new spread will be available for trading on the NYMEX
trading floor and for submission for clearing through CME ClearPort.
Contact Market Data Operations (MDO) at firstname.lastname@example.org, if you have any questions concerning this notice.