Exhibit 3.1

CERTIFICATE OF AMENDMENT

TO THE

SEVENTH AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

HUBSPOT, INC.

(Pursuant to Section 242 of the

General Corporation Law of the State of Delaware)

HubSpot, Inc., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows:

1.The Corporation was originally incorporated pursuant to the General Corporation Law of the State of Delaware (the “DGCL”). The date of the filing of its original Certificate of Incorporation with the Secretary of State of the State of Delaware was June 7, 2007. The Seventh Amended and Restated Certificate of Incorporation filed with the Secretary of State of the State of Delaware was executed as of October 15, 2014 (the “Charter”). Pursuant to Section 242 of the DGCL, this Certificate of Amendment (this “Amendment”) amends certain provisions of the Charter.

2.This Amendment has been approved and duly adopted by the Corporation’s Board of Directors and stockholders in accordance with the provisions of Section 242 of the DGCL.

3.The Charter is hereby amended by adding a new Article X to read in its entirety as follows:

“ARTICLE X

LIMITATION OF OFFICER LIABILITY

To the fullest extent permitted by the DGCL, an Officer (as defined below) of the Corporation shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of his or her fiduciary duty as an officer of the Corporation, except for liability (a) for any breach of the Officer’s duty of loyalty to the Corporation or its stockholders, (b) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (c) for any transaction from which the Officer derived an improper personal benefit, or (d) arising from any claim brought by or in the right of the Corporation. If the DGCL is amended after the effective date of this Certificate to authorize corporate action further eliminating or limiting the personal liability of Officers, then the liability of an Officer of the Corporation shall be eliminated or limited to the fullest extent permitted by the DGCL, as so amended. For purposes of this ARTICLE X, “Officer” shall mean an individual who has been duly appointed as an officer of the Corporation and who, at the time of an act or omission as to which liability is asserted, is deemed to have consented to service of process to the registered agent of the Corporation as contemplated by 10 Del. C. § 3114(b).

Any amendment, repeal or modification of this ARTICLE X by either (i) the stockholders of the Corporation or (ii) an amendment to the DGCL, shall not adversely affect any right or protection existing at the time of such amendment, repeal or modification with respect to any acts or omissions occurring before such amendment, repeal or modification of a person serving as an Officer at the time of such amendment, repeal or modification.”

4.All other provisions of the Charter shall remain in full force and effect.

IN WITNESS WHEREOF, this Certificate of Amendment to the Seventh Amended and Restated Certificate of Incorporation has been executed by a duly authorized officer of this corporation on this 13th day of June, 2024.

HubSpot, Inc.
By:	/s/ Alyssa Harvey Dawson
	Name: Alyssa Harvey Dawson
	Title: Secretary