X0306 4 2018-02-06 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 2018-02-06 4 A 0 36026 0.00 A 262282 D Common Stock 2018-02-06 4 A 0 2692 0.00 A 264974 D Common Stock 2018-02-08 4 S 0 2692 19.38 D 262282 D On February 6, 2018, the Reporting Person was granted 36,026 restricted stock units ("RSUs"). Each RSU represents the right to receive, at settlement, one share of common stock. One-quarter (1/4) of such restricteed stock units shall vest and become releaseable on February 15, 2019, and thereafter, the balance of the restrcted stock units shall vest and become releaseable in a series of three (3) successive 3-month installments over the following nine (9) months thereafter, all subject to grantee's continued status as a service provider. All or portion of the unvested RSUs are subject to acceleration upon the occurrence of certain events. Acquired upon the settlement of performance stock units granted on June 3, 2015 under the Issuer's Amended and Restated 2014 Stock Option and Incentive Plan. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 14, 2016. Chief Accounting Officer, Corporate Controller and Principal Accounting Officer /s/ Anne Kuykendall as Attorney-in-Fact for Scott Reasoner 2018-02-08