X0306 4 2018-04-01 false 0001100412 ARRAY BIOPHARMA INC ARRY 0001454001 Squarer Ron C/O ARRAY BIOPHARMA INC. 3200 WALNUT STREET BOULDER CO 80301 true true false false CEO Common Stock 2018-04-01 4 M false 18906.00 0.00 A 228180.00 D Common Stock 2018-04-01 4 F false 16605.00 16.32 D 211575.00 D Restricted Stock Units 0.00 2018-04-01 4 M false 18906.00 0.00 D 2020-04-01 Common Stock 18906.00 37813.00 D Shares issued upon settlement of Restricted Stock Units ("RSUs") granted by the Issuer on April 1, 2016 as a result of the vesting of one fourth of such RSUs. Includes (i) 18,906 unvested Restricted Stock Units ("RSUs") awarded on April 1, 2015 to the reporting person for no additional cash consideration, each of which represent a contingent right to receive one share of Array BioPharma Inc. common stock and which were reported by the reporting person on Table I on a form 4 filed upon grant of the RSUs, and (ii) 18,906 shares of common stock issued upon the vesting of these RSU's on April 1, 2018. Represents shares withheld to satisfy tax withholding obligations of the reporting person. The remaining RSUs vest and will be settled in stock in two equal annual installments on April 1, 2019 and 2020. Jason Haddock, attorney-in-fact for Ron Squarer 2018-04-03