As previously reported by Array BioPharma Inc. ("Array") on a Form 8-K filed with the Securities and Exchange Commission on August 17, 2009, Array entered into a Fifth Amendment to Loan and Security Agreement dated as of September 30, 2009 (the "Amendment") with Comerica Bank (the "Bank") pursuant to which certain provisions of the Loan and Security Agreement dated as of June 28, 2005 (as subsequently amended, the "Loan Agreement") by and between Array and the Bank were amended. Under the terms of the Amendment, the maturity date for equipment advances and the term loan under the Loan Agreement was extended an additional 120 days to October 26, 2010, and the interest rate under the Loan Agreement was increased to 2.75% above the Bank's Prime rate, which will never be below the Bank's LIBOR rate. This summary is qualified in its entirety by the full Amendment, a copy of which is filed as Exhibit 1.1 to this report.

(d) Exhibits

Attached as exhibits to this form are the documents listed below:

Exhibit
No.                                        Document
1.1         Fifth Amendment to Loan and Security Agreement dated September 30,
            2009 between the registrant and Comerica Bank