X0206 3/A 2014-12-11 2014-12-11 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 377693 I Herbert D. Cunitz and Laura J. Cunitz, Trustees of the Herbert D. Cunitz Trust dated March 17, 2000 Common Stock 500000 I Premier Trust, Inc., Trustee of the Cunitz 2014 Irrevocable Trust fbo Jaclyn Cunitz Common Stock 500000 I Premier Trust, Inc., Trustee of the Cunitz 2014 Irrevocable Trust fbo Graham Cunitz Stock Option (right to buy) 14.22 2024-09-11 Common Stock 125000 D 1/4th of the shares subject to the option vested on September 12, 2015 and 1/48th of the shares subject to the option shall vest monthly thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date. /s/ David Howard, as Attorney in fact for Herbert Cunitz 2014-12-16