X0306 4 2017-04-07 0 0001610532 Hortonworks, Inc. HDP 0001565530 Gnau Scott E C/O HORTONWORKS, INC. 5470 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 0 1 0 0 Chief Technology Officer Common Stock 2017-04-07 4 A 0 100000 0.00 A 376006 D On April 7, 2017 the Reporting Person was granted 100,000 restricted stock units (RSU's). Each RSU represents the right to receive, at settlement, one share of common stock. Such restricted stock units shall vest and become releasable in a series of eight equal successive three month installments over the twenty-four months following the grant date, all subject to the grantee's continued status as a service provider. Reflects the adjusted total which includes a purchase of 1,500 shares under the Hortonworks, Inc. Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c). /s/ Anne Kuykendall as Attorney-in-fact for Scott E. Gnau 2017-04-11