HUBSPOT INC

POWER OFATTORNEY

We, the undersigned directors and officers of HubSpot, Inc. (the “Company”), hereby and severally constitute and appoint Yamini Rangan, Kate Bueker, and Alyssa Harvey Dawson and each of them singly, our true and lawful attorneys, with full power to them, and each of them singly, to sign for us and in our names in the capacities indicated below, and to file any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing, requisite and necessary to be done in connection therewith, as fully to all intents and purposes as each of us might or could do in person and hereby ratifying and confirming all that said attorneys and each of them, or their substitutes, shall do or cause to be done by virtue of this Power of Attorney.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.