JOINT FILING AGREEMENTJoint Filing Agreement • February 21st, 2008 • D. E. Shaw Valence Portfolios, L.L.C. • Pharmaceutical preparations
Contract Type FiledFebruary 21st, 2008 Company IndustryIn accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, each of the undersigned Reporting Persons hereby agrees to the joint filing, along with all other such Reporting Persons, on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock, $0.001 par value, of Array BioPharma Inc., and that this Agreement be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.