X0306 4 2016-02-11 0 0001610532 Hortonworks, Inc. HDP 0001626708 Cunitz Herbert C/O HORTONWORKS, INC. 5470 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 0 1 0 0 President Common Stock 2016-02-11 4 A 0 26851 0.00 A 116830 D Common Stock 230900 I See Footnote Common Stock 230900 I See Footnote Common Stock 858593 I See Footnote On February 11, 2016, the Reporting Person was granted 26,851 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. Herbert D. Cunitz and Laura J. Cunitz, Trustees of the Cunitz 2014 Irrevocable Trust fbo Jaclyn L. Cunitz. Herbert D. Cunitz and Laura J. Cunitz, Trustees of the Cunitz 2014 Irrevocable Trust fbo Graham M. Cunitz. Herbert D. Cunitz and Laura J. Cunitz, Trustees of the Herbert D. Cunitz Trust dated March 17, 2000. /s/ David Howard as Attorney-in-fact for Herbert Cunitz 2016-02-16