Jefferies Group, Inc. ("the Company") (NYSE: JEF) today announced that it has commenced an underwritten public offering, subject to market and other conditions, of $300 million aggregate principal amount of convertible senior debentures. The underwriters for the offering will also have the option to purchase up to $45 million principal amount of additional debentures solely to cover any over-allotments. The Company intends to use the proceeds from the offering for general corporate purposes. If the underwriters exercise their over-allotment option to purchase additional notes, the Company will use the proceeds from such sale of additional notes for general corporate purposes.

Jefferies & Company, Inc. is acting as sole book-running manager for the offering and joint lead manager with Citibank Global Markets Inc.

This announcement does not constitute an offer to sell or the solicitation of an offer to buy the debentures or any other securities, nor will there be any sale of debentures or any other securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

The offering will be made only by means of a prospectus, forming a part of the Company's shelf registration statement, related prospectus supplement and other related documents. You may obtain these documents for free by visiting EDGAR on the Securities and Exchange Commission website at www.sec.gov. Alternatively, copies may be obtained from Jefferies & Company, Inc., Attention: Syndicate Prospectus Department, 520 Madison Avenue, New York, NY 10022 or at (888) 449-2342. Before you invest, you should read the prospectus supplement and accompanying base prospectus along with other documents that the Company has filed with the Securities and Exchange Commission for more complete information about the Company and this offering.

About Jefferies

Jefferies, a major global securities and investment banking group, has served companies and their investors for more than 45 years. Headquartered in New York City, with offices in more than 25 cities around the world, Jefferies provides clients with capital markets and financial advisory services, institutional brokerage, securities research and asset management. Jefferies & Company, Inc. is the principal operating subsidiary of Jefferies Group, Inc. (NYSE: JEF: www.jefferies.com).