Electronic Delivery of Annual Report and Proxy Statement

If you are the beneficial owner of shares held in "street name" through an account at a brokerage firm, bank, dealer or other similar organization, you may be able to register to receive stockholder communications electronically as soon as they are available, without having to wait for them to arrive via postal mail. Opting to receive your proxy materials by electronic delivery can reduce the number of documents in your personal files, conserve natural resources and help Medarex to reduce costly printing and postage expenses. Please check the information provided in the proxy materials mailed to you by your broker or other agent regarding the availability of this service.