X0306 4 2016-10-31 0 0001404655 HUBSPOT INC HUBS 0001106463 SKOK DAVID R C/O MATRIX PARTNERS 101 MAIN STREET, 17TH FLOOR CAMBRIDGE MA 02142 1 0 0 0 Common Stock 2016-10-31 4 S 0 5000 53.85 D 25544 D Common Stock 2017-01-30 4 S 0 3000 50.85 D 22544 D Common Stock 9094 I By Matrix VIII US Management Co., LLC This transaction was effected pursuant to a written trading plan adopted by the Reporting Person in accordance with Rule 10b5-1. Mr. Skok is a Managing Member of Matrix VIII U.S. Management, Co., L.L.C. Mr. Skok, by virtue of his management position in Matrix VIII U.S. Management Co., L.L.C., has sole voting and dispositive power with respect to these shares. Mr. Skok disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. /s/ John Kelleher, attorney-in-fact 2017-02-01