Pursuant to the instructions in Item 7 of Schedule 13G, Fidelity Management & Research Company ("Fidelity"), 82 Devonshire Street, Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and an investment adviser registered under Section 203 of the Investment Advisers Act of 1940, is the beneficial owner of 17,383,058 shares or 14.227% of the Common Stock outstanding of Medarex Incorporated ("the Company") as a result of acting as investment adviser to various investment companies registered under Section 8 of the Investment Company Act of 1940.
The ownership of one investment company, Fidelity Contrafund, amounted to 7,875,303 shares or 6.446% of the Common Stock outstanding. Fidelity Contrafund has its principal business office at 82 Devonshire Street, Boston, Massachusetts 02109.
Edward C. Johnson 3d and FMR Corp., through its control of Fidelity, and the funds each has sole power to dispose of the 17,383,058 shares owned by the Funds.
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