X0306 4 2016-03-07 0 0001404655 HUBSPOT INC HUBS 0001494474 Gill Ronald S C/O HUBSPOT, INC. 25 FIRST STREET, 2ND FLOOR CAMBRIDGE MA 02141 1 0 0 0 Common Stock 2016-03-07 4 M 0 5000 5.76 A 13831 D Common Stock 2016-03-07 4 S 0 5000 45.00 D 8831 D Employee Stock Option (right to buy) 5.76 2016-03-07 4 M 0 5000 0.00 D 2022-06-18 Common Stock 5000 24833 D The transactions reported on this Form 4 were effected pursuant to a written trading plan adopted by the Reporting Person in accordance with Rule 10b5-1. This stock option is fully vested. /s/ John Kelleher, attorney-in-fact 2016-03-08