X0306 4 2016-02-11 0 0001610532 Hortonworks, Inc. HDP 0001415326 Reasoner Scott C/O HORTONWORKS, INC. 5470 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 0 1 0 0 See Remarks Common Stock 2016-02-11 4 A 0 43577 0.00 A 97911 D Common Stock 2016-02-12 4 S 0 2903 8.63 D 95008 D On February 11, 2016, the Reporting Person was granted 43,577 restricted stock units ("RSUs"). Each RSU represents the right to receive, at settlement, one share of common stock. One-half of the original grant shall vest and become releasable on the first anniversary of the vesting commencement date, and thereafter the balance of the RSUs shall vest and become releasable in a series of two (2) successive equal six-month installments measured from the first anniversary of the vesting commencement date, subject to the Reporting Person's service through such date. All or a portion of the unvested shares are subject to acceleration upon the occurrence of certain events. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 11, 2015. VP, Corp Controller & Principal Accounting Officer /s/ David Howard as Attorney-in-fact for Scott Reasoner 2016-02-16