X0306 4 2021-11-24 0 0001404655 HUBSPOT INC HUBS 0001603527 Halligan Brian C/O HUBSPOT, INC. 25 FIRST STREET, 2ND FLOOR CAMBRIDGE MA 02141 1 1 0 0 Executive Chair Common Stock 2021-11-23 4 G 0 1335 0.00 D 671350 D Common Stock 1335 I See Footnote Common Stock 2021-11-24 4 S 0 1335 787.75 D 0 I See Footnote On November 23, 2021, the reporting person made a gift of 1,335 shares to the Brian Halligan 2020 Irrevocable Trust, an irrevocable trust for the benefit of the reporting person's son, who does not share the reporting person's household. Bona Fide Gift. No compensation was given to the donor for the gifting of shares. On November 23, 2021, shares transferred to the Brian Halligan 2020 Irrevocable Trust, for which the reporting person serves as the donor. The reporting person disclaims beneficial ownership of the shares in excess of his pecuniary interest therein. Shares held by the Brian Halligan 2020 Irrevocable Trust, for which Brian Halligan serves as donor. The reporting person disclaims beneficial ownership of these securities in excess of his pecuniary interest therein, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose. John P. Kelleher, attorney-in-fact 2021-11-29